736  
FNUS55 KBOU 181023  
FWFBOU  
 
FIRE WEATHER FORECAST FOR NORTHEAST AND NORTH CENTRAL COLORADO  
NATIONAL WEATHER SERVICE DENVER/BOULDER CO  
423 AM MDT MON MAY 18 2026  
   
DISCUSSION...TODAY AND TONIGHT
 
 
WIDESPREAD WETTING RAIN IS EXPECTED ACROSS THE PLAINS THIS  
MORNING INTO THIS AFTERNOON. THE HIGHEST TOTALS WILL BE IN THE  
NORTHERN I-25 CORRIDOR. FOR THE MOUNTAINS, SNOW ACCUMULATIONS OF  
4 TO 18 INCHES ARE EXPECTED, WITH THE HIGHEST AMOUNTS ON EASTWARD  
FACING SLOPES.  
 
LONG TERM DISCUSSION...TUESDAY THROUGH FRIDAY...  
MINIMUM RHS ARE EXPECTED TO REMAIN WELL ABOVE CRITICAL THRESHOLDS  
FOR MUCH OF THE AREA THROUGH FRIDAY. PRECIPITATION CHANCES WILL  
RETURN EACH AFTERNOON FOR TUESDAY THROUGH THURSDAY. FIRE WEATHER  
CONDITIONS WILL REMAIN LIMITED THIS WORK WEEK.  
 
...THUNDERSTORMS IMPLY STRONG GUSTY ERRATIC WINDS...  
...ALL SURFACE WINDS ARE 20-FOOT...10-MINUTE AVERAGED WINDS...  
...CWR IS CHANCE OF WETTING RAIN - 0.10 INCH OR MORE LIQUID...  
...24 HR TRENDS ARE BASED ON AVERAGES OVER THE RESPECTIVE ZONE  
GROUPS AND MAY NOT MATCH THE ACTUAL FORECAST VALUES  
SHOWN IN THOSE GROUPS...  
 
COZ238-190015-  
LARIMER COUNTY BELOW 6000 FEET/NORTHWEST WELD COUNTY-  
INCLUDING FORT COLLINS, HEREFORD, LOVELAND, NUNN,  
AND WEST PAWNEE GRASSLANDS  
423 AM MDT MON MAY 18 2026  
   
TODAY
 
 
SKY/WEATHER.........CLOUDY. RAIN SHOWERS UNTIL 1500. SLIGHT CHANCE  
OF THUNDERSTORMS AND SNOW SHOWERS AFTER 1200.  
RAIN SHOWERS LIKELY AFTER 1500.  
CHANCE OF THUNDER...20 PERCENT.  
MAX TEMPERATURE.....38-44.  
24 HR TREND......20-25 DEGREES COOLER.  
MIN HUMIDITY........72-82%.  
24 HR TREND......35-50% WETTER.  
20-FOOT WINDS.......NORTHEAST WINDS 13-22 MPH WITH GUSTS TO AROUND  
35 MPH.  
CWR.................90 PERCENT DECREASING TO 60 PERCENT IN THE  
AFTERNOON.  
15K FT MSL WINDS....SOUTHWEST 35-45 MPH.  
MIXING HEIGHT.......2500-3500 FT AGL.  
TRANSPORT WINDS.....NORTHEAST 15-20 MPH UNTIL 1500, THEN NORTH.  
SMOKE DISPERSAL.....FAIR.  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLOUDY(60-65%). SLIGHT CHANCE OF RAIN  
SHOWERS UNTIL 2400. SLIGHT CHANCE OF SNOW  
SHOWERS UNTIL 0300.  
CHANCE OF THUNDER...0 PERCENT.  
MIN TEMPERATURE.....24-32.  
24 HR TREND......4-7 DEGREES COOLER.  
MAX HUMIDITY........86-96%.  
24 HR TREND......7-10% DRIER.  
20-FOOT WINDS.......NORTH WINDS 7-15 MPH. GUSTS UP TO 30 MPH  
DECREASING TO 20 MPH AFTER MIDNIGHT.  
CWR.................10 PERCENT DECREASING TO 0 PERCENT AFTER  
MIDNIGHT.  
15K FT MSL WINDS....WEST 30-40 MPH.  
MIXING HEIGHT.......2000-3000 FT AGL.  
TRANSPORT WINDS.....NORTH 15-20 MPH UNTIL 2400. LIGHT AFTER 0400.  
SMOKE DISPERSAL.....POOR.  
   
TUESDAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY(50-60%) UNTIL 0900, THEN PARTLY  
CLOUDY(40-50%) UNTIL 1200, THEN MOSTLY CLOUDY.  
CHANCE OF RAIN SHOWERS AFTER 1200.  
CHANCE OF THUNDER...0 PERCENT.  
MAX TEMPERATURE.....47-53.  
24 HR TREND......7-10 DEGREES WARMER.  
MIN HUMIDITY........41-51%.  
24 HR TREND......25-35% DRIER.  
20-FOOT WINDS.......NORTHEAST WINDS 4-6 MPH UNTIL 1200, THEN  
SOUTHEAST 4-7 MPH.  
CWR.................0 PERCENT.  
15K FT MSL WINDS....WEST 25-35 MPH.  
MIXING HEIGHT.......5500-6500 FT AGL.  
TRANSPORT WINDS.....LIGHT WINDS UNTIL 1300, THEN SOUTH AROUND 10  
MPH UNTIL 1400, THEN EAST UNTIL 1500, THEN  
SOUTH UNTIL 1600, THEN SOUTHEAST.  
SMOKE DISPERSAL.....POOR.  
   
TUESDAY NIGHT
 
MOSTLY CLOUDY. CHANCE OF RAIN SHOWERS. LOWS IN  
THE MID 30S. SOUTH WINDS 4-8 MPH.    
WEDNESDAY
 
MOSTLY CLOUDY. CHANCE OF THUNDERSTORMS. HIGHS AROUND  
60. SOUTHEAST WINDS 4-9 MPH.    
THURSDAY
 
MOSTLY CLOUDY. CHANCE OF THUNDERSTORMS. LOWS IN THE  
UPPER 30S. HIGHS IN THE UPPER 60S. WEST WINDS 4-9 MPH.    
FRIDAY
 
MOSTLY CLOUDY. SLIGHT CHANCE OF THUNDERSTORMS. LOWS IN  
THE UPPER 30S. HIGHS IN THE UPPER 60S. NORTH WINDS 4-9 MPH.  
 

 
 
COZ239-190015-  
BOULDER AND JEFFERSON COUNTIES BELOW 6000 FEET/WEST BROOMFIELD  
COUNTY-  
INCLUDING ARVADA, BOULDER, GOLDEN, LAKEWOOD, AND LONGMONT  
423 AM MDT MON MAY 18 2026  
   
TODAY
 
 
SKY/WEATHER.........CLOUDY. RAIN SHOWERS UNTIL 1500. SLIGHT CHANCE  
OF THUNDERSTORMS AFTER 0900. RAIN SHOWERS  
LIKELY AFTER 1500.  
CHANCE OF THUNDER...20 PERCENT.  
MAX TEMPERATURE.....41-45.  
24 HR TREND......20-25 DEGREES COOLER.  
MIN HUMIDITY........73-81%.  
24 HR TREND......35-50% WETTER.  
20-FOOT WINDS.......NORTH WINDS 9-17 MPH WITH GUSTS TO AROUND 30  
MPH.  
CWR.................80 PERCENT.  
15K FT MSL WINDS....SOUTHWEST 35-45 MPH.  
MIXING HEIGHT.......2000-3000 FT AGL.  
TRANSPORT WINDS.....NORTHEAST 10-15 MPH UNTIL 1200, THEN NORTH  
15-20 MPH.  
SMOKE DISPERSAL.....POOR.  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLOUDY. CHANCE OF RAIN SHOWERS UNTIL  
2400. SLIGHT CHANCE OF SNOW SHOWERS. SLIGHT  
CHANCE OF RAIN SHOWERS AFTER 2400.  
CHANCE OF THUNDER...0 PERCENT.  
MIN TEMPERATURE.....30-34.  
24 HR TREND......7-10 DEGREES COOLER.  
MAX HUMIDITY........90-100%.  
24 HR TREND......2-4% DRIER.  
20-FOOT WINDS.......NORTH WINDS 5-13 MPH. GUSTS UP TO 25 MPH IN THE  
EVENING.  
CWR.................10 PERCENT.  
15K FT MSL WINDS....SOUTHWEST 30-40 MPH.  
MIXING HEIGHT.......2000-3000 FT AGL.  
TRANSPORT WINDS.....NORTH 10-15 MPH UNTIL 0100, THEN LIGHT.  
SMOKE DISPERSAL.....POOR.  
   
TUESDAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY. SLIGHT CHANCE OF SNOW SHOWERS  
AFTER 1200 UNTIL 1500. RAIN SHOWERS LIKELY AND  
SLIGHT CHANCE OF THUNDERSTORMS AFTER 1200.  
CHANCE OF THUNDER...20 PERCENT.  
MAX TEMPERATURE.....45-49.  
24 HR TREND......4-7 DEGREES WARMER.  
MIN HUMIDITY........59-69%.  
24 HR TREND......15-20% DRIER.  
20-FOOT WINDS.......EAST WINDS 4-8 MPH.  
CWR.................0 PERCENT INCREASING TO 10 PERCENT IN THE  
AFTERNOON.  
15K FT MSL WINDS....SOUTHWEST 25-35 MPH.  
MIXING HEIGHT.......3500-4500 FT AGL.  
TRANSPORT WINDS.....LIGHT WINDS UNTIL 1300, THEN EAST AROUND 10 MPH  
UNTIL 1700, THEN NORTHEAST.  
SMOKE DISPERSAL.....POOR.  
   
TUESDAY NIGHT
 
RAIN SHOWERS LIKELY. LOWS IN THE UPPER 30S. WEST  
WINDS 4-8 MPH.    
WEDNESDAY
 
NOT AS COOL. MOSTLY CLOUDY. CHANCE OF THUNDERSTORMS.  
HIGHS IN THE UPPER 50S. EAST WINDS 4-6 MPH.    
THURSDAY
 
PARTLY CLOUDY. CHANCE OF THUNDERSTORMS. LOWS IN THE  
UPPER 30S. HIGHS IN THE UPPER 60S. NORTHEAST WINDS 4-6 MPH.    
FRIDAY
 
MOSTLY CLOUDY. CHANCE OF THUNDERSTORMS. LOWS IN THE  
LOWER 40S. HIGHS IN THE UPPER 60S. EAST WINDS 4-6 MPH.  
 

 
 
COZ240-190015-  
NORTH DOUGLAS COUNTY BELOW 6000 FEET/DENVER/WEST ADAMS AND  
ARAPAHOE COUNTIES/EAST BROOMFIELD COUNTY-  
INCLUDING AURORA, BRIGHTON, CITY OF DENVER,  
DENVER INTERNATIONAL AIRPORT, HIGHLANDS RANCH, LITTLETON,  
AND PARKER  
423 AM MDT MON MAY 18 2026  
   
TODAY
 
 
SKY/WEATHER.........CLOUDY. RAIN SHOWERS LIKELY UNTIL 0900, THEN  
RAIN SHOWERS AND SLIGHT CHANCE OF  
THUNDERSTORMS. SLIGHT CHANCE OF SNOW SHOWERS  
AFTER 1500.  
CHANCE OF THUNDER...20 PERCENT.  
MAX TEMPERATURE.....43-47.  
24 HR TREND......20-25 DEGREES COOLER.  
MIN HUMIDITY........72-82%.  
24 HR TREND......35-50% WETTER.  
20-FOOT WINDS.......EAST WINDS 9-16 MPH UNTIL 1200, THEN NORTH  
12-18 MPH. GUSTS UP TO 30 MPH.  
CWR.................70 PERCENT INCREASING TO 80 PERCENT IN THE  
AFTERNOON.  
15K FT MSL WINDS....SOUTHWEST 35-45 MPH.  
MIXING HEIGHT.......2000-3000 FT AGL.  
TRANSPORT WINDS.....EAST 15-20 MPH UNTIL 1300, THEN NORTH.  
SMOKE DISPERSAL.....POOR.  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLOUDY. CHANCE OF RAIN AND SNOW SHOWERS  
UNTIL 2400, THEN SLIGHT CHANCE OF RAIN AND SNOW  
SHOWERS.  
CHANCE OF THUNDER...0 PERCENT.  
MIN TEMPERATURE.....29-35.  
24 HR TREND......7-10 DEGREES COOLER.  
MAX HUMIDITY........87-97%.  
24 HR TREND......LITTLE CHANGE.  
20-FOOT WINDS.......NORTH WINDS 6-14 MPH. GUSTS UP TO 25 MPH IN THE  
EVENING.  
CWR.................10 PERCENT DECREASING TO 0 PERCENT AFTER  
MIDNIGHT.  
15K FT MSL WINDS....SOUTHWEST 30-40 MPH.  
MIXING HEIGHT.......2000-3000 FT AGL.  
TRANSPORT WINDS.....NORTH 10-15 MPH UNTIL 0300, THEN LIGHT.  
SMOKE DISPERSAL.....POOR.  
   
TUESDAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY. CHANCE OF RAIN SHOWERS AFTER  
1200.  
CHANCE OF THUNDER...0 PERCENT.  
MAX TEMPERATURE.....49-53.  
24 HR TREND......4-7 DEGREES WARMER.  
MIN HUMIDITY........50-58%.  
24 HR TREND......20-25% DRIER.  
20-FOOT WINDS.......NORTHEAST WINDS 4-9 MPH.  
CWR.................0 PERCENT INCREASING TO 10 PERCENT IN THE  
AFTERNOON.  
15K FT MSL WINDS....SOUTHWEST 30-40 MPH.  
MIXING HEIGHT.......5000-6000 FT AGL.  
TRANSPORT WINDS.....LIGHT WINDS UNTIL 1300, THEN EAST AROUND 10 MPH  
UNTIL 1600, THEN NORTHEAST.  
SMOKE DISPERSAL.....POOR.  
   
TUESDAY NIGHT
 
RAIN SHOWERS LIKELY. LOWS IN THE UPPER 30S.  
NORTHWEST WINDS 4-7 MPH.    
WEDNESDAY
 
MOSTLY CLOUDY. CHANCE OF THUNDERSTORMS. HIGHS IN THE  
LOWER 60S. SOUTHEAST WINDS 4-9 MPH.    
THURSDAY
 
PARTLY CLOUDY. CHANCE OF THUNDERSTORMS. LOWS AROUND  
40. HIGHS IN THE UPPER 60S. NORTH WINDS 4-8 MPH.    
FRIDAY
 
PARTLY CLOUDY. SLIGHT CHANCE OF THUNDERSTORMS. LOWS IN  
THE LOWER 40S. HIGHS IN THE UPPER 60S. NORTHEAST WINDS 4-8 MPH.  
 

 
 
COZ241-190015-  
ELBERT/CENTRAL AND EAST DOUGLAS COUNTIES ABOVE 6000 FEET-  
INCLUDING CASTLE ROCK, ELBERT, FONDIS, KIOWA, AND LARKSPUR  
423 AM MDT MON MAY 18 2026  
   
TODAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY. RAIN SHOWERS AND SLIGHT CHANCE  
OF THUNDERSTORMS. SNOW SHOWERS AFTER 1200.  
CHANCE OF THUNDER...20 PERCENT.  
MAX TEMPERATURE.....43-52.  
24 HR TREND......15-20 DEGREES COOLER.  
MIN HUMIDITY........76-86%.  
24 HR TREND......35-50% WETTER.  
20-FOOT WINDS.......SOUTHEAST WINDS 8-15 MPH UNTIL 1200, THEN NORTH  
12-18 MPH. GUSTS UP TO 30 MPH.  
CWR.................40 PERCENT INCREASING TO 70 PERCENT IN THE  
AFTERNOON.  
15K FT MSL WINDS....SOUTHWEST 45-55 MPH.  
MIXING HEIGHT.......2500-3500 FT AGL.  
TRANSPORT WINDS.....SOUTHEAST 15-20 MPH UNTIL 1300, THEN SOUTHWEST  
UNTIL 1400, THEN NORTH.  
SMOKE DISPERSAL.....POOR.  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLOUDY. CHANCE OF RAIN AND SNOW SHOWERS  
UNTIL 2400, THEN SLIGHT CHANCE OF SNOW SHOWERS.  
CHANCE OF THUNDER...0 PERCENT.  
MIN TEMPERATURE.....26-30.  
24 HR TREND......10-15 DEGREES COOLER.  
MAX HUMIDITY........100%.  
24 HR TREND......LITTLE CHANGE.  
20-FOOT WINDS.......NORTH WINDS 8-16 MPH WITH GUSTS TO AROUND 30  
MPH.  
CWR.................10 PERCENT DECREASING TO 0 PERCENT AFTER  
MIDNIGHT.  
15K FT MSL WINDS....SOUTHWEST 35-45 MPH.  
MIXING HEIGHT.......2000-2500 FT AGL.  
TRANSPORT WINDS.....NORTH 15-20 MPH UNTIL 0300, THEN AROUND 10 MPH.  
SMOKE DISPERSAL.....POOR.  
   
TUESDAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY(60-65%). SLIGHT CHANCE OF SNOW  
SHOWERS AFTER 1200 UNTIL 1500. CHANCE OF RAIN  
SHOWERS AFTER 1200.  
CHANCE OF THUNDER...0 PERCENT.  
MAX TEMPERATURE.....48-54.  
24 HR TREND......4-7 DEGREES WARMER.  
MIN HUMIDITY........52-62%.  
24 HR TREND......25-35% DRIER.  
20-FOOT WINDS.......EAST WINDS 4-12 MPH. GUSTS UP TO 20 MPH IN THE  
AFTERNOON.  
CWR.................0 PERCENT.  
15K FT MSL WINDS....SOUTHWEST 40-50 MPH.  
MIXING HEIGHT.......5000-6000 FT AGL.  
TRANSPORT WINDS.....LIGHT WINDS UNTIL 1200, THEN SOUTHEAST 10-15  
MPH.  
SMOKE DISPERSAL.....POOR UNTIL 1400, THEN FAIR.  
   
TUESDAY NIGHT
 
RAIN SHOWERS LIKELY. LOWS IN THE MID 30S. EAST  
WINDS 5-12 MPH.    
WEDNESDAY
 
RAIN SHOWERS AND CHANCE OF THUNDERSTORMS. HIGHS IN  
THE UPPER 50S. SOUTH WINDS 9-16 MPH.    
THURSDAY
 
MOSTLY CLOUDY. CHANCE OF THUNDERSTORMS. LOWS IN THE  
UPPER 30S. HIGHS IN THE MID 60S. SOUTH WINDS 4-9 MPH.    
FRIDAY
 
MOSTLY CLOUDY. CHANCE OF THUNDERSTORMS. LOWS IN THE  
UPPER 30S. HIGHS IN THE MID 60S. NORTH WINDS 5-12 MPH.  
 

 
 
COZ242-190015-  
NORTHEAST WELD COUNTY-  
INCLUDING BRIGGSDALE, EAST PAWNEE GRASSLANDS, GROVER,  
PAWNEE BUTTES, RAYMER, AND STONEHAM  
423 AM MDT MON MAY 18 2026  
   
TODAY
 
 
SKY/WEATHER.........CLOUDY. RAIN SHOWERS LIKELY UNTIL 0900, THEN  
RAIN SHOWERS. SLIGHT CHANCE OF SNOW SHOWERS  
AFTER 1500.  
CHANCE OF THUNDER...0 PERCENT.  
MAX TEMPERATURE.....40-44.  
24 HR TREND......20-25 DEGREES COOLER.  
MIN HUMIDITY........72-82%.  
24 HR TREND......35-50% WETTER.  
20-FOOT WINDS.......NORTHEAST WINDS 13-23 MPH WITH GUSTS TO AROUND  
35 MPH.  
CWR.................50 PERCENT INCREASING TO 60 PERCENT IN THE  
AFTERNOON.  
15K FT MSL WINDS....SOUTHWEST 40-50 MPH.  
MIXING HEIGHT.......2500-3000 FT AGL.  
TRANSPORT WINDS.....NORTHEAST 20-25 MPH UNTIL 1600, THEN NORTH.  
SMOKE DISPERSAL.....FAIR.  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLOUDY UNTIL 2400, THEN PARTLY  
CLOUDY(40-50%).  
CHANCE OF THUNDER...0 PERCENT.  
MIN TEMPERATURE.....27-31.  
24 HR TREND......4-7 DEGREES COOLER.  
MAX HUMIDITY........88-94%.  
24 HR TREND......7-10% DRIER.  
20-FOOT WINDS.......NORTH WINDS 9-17 MPH. GUSTS UP TO 30 MPH  
DECREASING TO 20 MPH AFTER MIDNIGHT.  
CWR.................0 PERCENT.  
15K FT MSL WINDS....WEST 30-40 MPH.  
MIXING HEIGHT.......1500-2500 FT AGL.  
TRANSPORT WINDS.....NORTH 15-20 MPH UNTIL 0300, THEN AROUND 10 MPH.  
SMOKE DISPERSAL.....POOR.  
   
TUESDAY
 
 
SKY/WEATHER.........PARTLY CLOUDY(40-50%) UNTIL 1500, THEN MOSTLY  
CLOUDY.  
CHANCE OF THUNDER...0 PERCENT.  
MAX TEMPERATURE.....53-57.  
24 HR TREND......10-15 DEGREES WARMER.  
MIN HUMIDITY........30-34%.  
24 HR TREND......35-50% DRIER.  
20-FOOT WINDS.......NORTHWEST WINDS 4-8 MPH UNTIL 1200, THEN  
NORTHEAST 4-6 MPH.  
CWR.................0 PERCENT.  
15K FT MSL WINDS....WEST 30-40 MPH.  
MIXING HEIGHT.......6500-7500 FT AGL.  
TRANSPORT WINDS.....NORTHWEST AROUND 10 MPH UNTIL 1100, THEN LIGHT  
UNTIL 1300, THEN NORTHWEST AROUND 10 MPH UNTIL  
1500, THEN LIGHT UNTIL 1600, THEN NORTH AROUND  
10 MPH.  
SMOKE DISPERSAL.....POOR UNTIL 1600, THEN FAIR.  
   
TUESDAY NIGHT
 
MOSTLY CLOUDY. CHANCE OF RAIN SHOWERS. LOWS IN  
THE UPPER 30S. SOUTH WINDS 4-8 MPH.    
WEDNESDAY
 
MOSTLY CLOUDY. CHANCE OF RAIN SHOWERS AND SLIGHT  
CHANCE OF THUNDERSTORMS. HIGHS IN THE LOWER 60S. SOUTH WINDS  
9-16 MPH.    
THURSDAY
 
MOSTLY CLOUDY. CHANCE OF THUNDERSTORMS. LOWS IN THE  
UPPER 30S. HIGHS IN THE UPPER 60S. SOUTHEAST WINDS 5-12 MPH.    
FRIDAY
 
PARTLY CLOUDY. SLIGHT CHANCE OF THUNDERSTORMS. LOWS IN  
THE UPPER 30S. HIGHS AROUND 70. NORTH WINDS 6-13 MPH.  
 

 
 
COZ243-190015-  
CENTRAL AND SOUTH WELD COUNTY-  
INCLUDING EATON, FORT LUPTON, GREELEY, AND ROGGEN  
423 AM MDT MON MAY 18 2026  
   
TODAY
 
 
SKY/WEATHER.........CLOUDY. RAIN SHOWERS LIKELY UNTIL 0900, THEN  
RAIN SHOWERS. SLIGHT CHANCE OF THUNDERSTORMS  
AFTER 1200.  
CHANCE OF THUNDER...20 PERCENT.  
MAX TEMPERATURE.....42-46.  
24 HR TREND......20-25 DEGREES COOLER.  
MIN HUMIDITY........72-82%.  
24 HR TREND......35-50% WETTER.  
20-FOOT WINDS.......NORTHEAST WINDS 12-22 MPH WITH GUSTS TO AROUND  
35 MPH.  
CWR.................60 PERCENT INCREASING TO 70 PERCENT IN THE  
AFTERNOON.  
15K FT MSL WINDS....SOUTHWEST 40-50 MPH.  
MIXING HEIGHT.......2500-3500 FT AGL.  
TRANSPORT WINDS.....EAST 15-20 MPH UNTIL 1100. NORTH AFTER 1500.  
SMOKE DISPERSAL.....FAIR.  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLOUDY UNTIL 0300, THEN PARTLY  
CLOUDY(40-50%). SLIGHT CHANCE OF RAIN SHOWERS  
UNTIL 2400.  
CHANCE OF THUNDER...0 PERCENT.  
MIN TEMPERATURE.....29-33.  
24 HR TREND......4-7 DEGREES COOLER.  
MAX HUMIDITY........88-98%.  
24 HR TREND......7-10% DRIER.  
20-FOOT WINDS.......NORTH WINDS 10-17 MPH WITH GUSTS TO AROUND 30  
MPH UNTIL 2400, THEN 4-7 MPH.  
CWR.................10 PERCENT DECREASING TO 0 PERCENT AFTER  
MIDNIGHT.  
15K FT MSL WINDS....SOUTHWEST 25-35 MPH.  
MIXING HEIGHT.......1500-2500 FT AGL.  
TRANSPORT WINDS.....NORTH 10-15 MPH UNTIL 0300, THEN LIGHT.  
SMOKE DISPERSAL.....POOR.  
   
TUESDAY
 
 
SKY/WEATHER.........PARTLY CLOUDY(40-50%) UNTIL 1200, THEN MOSTLY  
CLOUDY(60-65%). SLIGHT CHANCE OF RAIN SHOWERS  
AFTER 1200.  
CHANCE OF THUNDER...0 PERCENT.  
MAX TEMPERATURE.....51-55.  
24 HR TREND......7-10 DEGREES WARMER.  
MIN HUMIDITY........41-51%.  
24 HR TREND......25-35% DRIER.  
20-FOOT WINDS.......NORTHEAST WINDS 4-8 MPH UNTIL 1200, THEN  
SOUTHEAST 4-8 MPH.  
CWR.................0 PERCENT.  
15K FT MSL WINDS....SOUTHWEST 25-35 MPH.  
MIXING HEIGHT.......5500-6500 FT AGL.  
TRANSPORT WINDS.....LIGHT WINDS UNTIL 1300, THEN EAST AROUND 10 MPH  
UNTIL 1500, THEN LIGHT UNTIL 1600, THEN  
NORTHEAST AROUND 10 MPH.  
SMOKE DISPERSAL.....POOR.  
   
TUESDAY NIGHT
 
RAIN SHOWERS LIKELY. LOWS IN THE UPPER 30S.  
SOUTHWEST WINDS 4-7 MPH.    
WEDNESDAY
 
MOSTLY CLOUDY. CHANCE OF RAIN SHOWERS AND SLIGHT  
CHANCE OF THUNDERSTORMS. HIGHS IN THE LOWER 60S. SOUTHEAST WINDS  
5-12 MPH.    
THURSDAY
 
PARTLY CLOUDY. CHANCE OF THUNDERSTORMS. LOWS IN THE  
UPPER 30S. HIGHS IN THE UPPER 60S. NORTHEAST WINDS 4-8 MPH.    
FRIDAY
 
PARTLY CLOUDY. SLIGHT CHANCE OF RAIN SHOWERS. LOWS IN  
THE UPPER 30S. HIGHS IN THE LOWER 70S. NORTHEAST WINDS 4-9 MPH.  
 

 
 
COZ244-190015-  
MORGAN COUNTY-  
INCLUDING BRUSH, FORT MORGAN, GOODRICH, AND WIGGINS  
423 AM MDT MON MAY 18 2026  
   
TODAY
 
 
SKY/WEATHER.........CLOUDY. RAIN SHOWERS LIKELY UNTIL 1200, THEN  
RAIN SHOWERS.  
CHANCE OF THUNDER...0 PERCENT.  
MAX TEMPERATURE.....44-48.  
24 HR TREND......20-25 DEGREES COOLER.  
MIN HUMIDITY........77-85%.  
24 HR TREND......35-50% WETTER.  
20-FOOT WINDS.......NORTHEAST WINDS 14-23 MPH WITH GUSTS TO AROUND  
35 MPH.  
CWR.................20 PERCENT INCREASING TO 70 PERCENT IN THE  
AFTERNOON.  
15K FT MSL WINDS....SOUTHWEST 45-55 MPH.  
MIXING HEIGHT.......2500-3000 FT AGL.  
TRANSPORT WINDS.....EAST 15-20 MPH UNTIL 1100. NORTH AFTER 1600.  
SMOKE DISPERSAL.....FAIR.  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLOUDY(60-65%) UNTIL 2400, THEN PARTLY  
CLOUDY(35-45%).  
CHANCE OF THUNDER...0 PERCENT.  
MIN TEMPERATURE.....29-33.  
24 HR TREND......7-10 DEGREES COOLER.  
MAX HUMIDITY........94-98%.  
24 HR TREND......2-4% DRIER.  
20-FOOT WINDS.......NORTH WINDS 13-20 MPH WITH GUSTS TO AROUND 30  
MPH UNTIL 2400, THEN NORTHWEST 4-9 MPH WITH  
GUSTS TO AROUND 20 MPH.  
CWR.................0 PERCENT.  
15K FT MSL WINDS....SOUTHWEST 30-40 MPH.  
MIXING HEIGHT.......1500-2500 FT AGL.  
TRANSPORT WINDS.....NORTH 15-20 MPH UNTIL 0200. LIGHT AFTER 0500.  
SMOKE DISPERSAL.....POOR.  
   
TUESDAY
 
 
SKY/WEATHER.........PARTLY CLOUDY(30-40%) UNTIL 1500, THEN MOSTLY  
CLOUDY(60-65%).  
CHANCE OF THUNDER...0 PERCENT.  
MAX TEMPERATURE.....54-58.  
24 HR TREND......7-10 DEGREES WARMER.  
MIN HUMIDITY........33-41%.  
24 HR TREND......35-50% DRIER.  
20-FOOT WINDS.......NORTH WINDS 4-8 MPH UNTIL 1200, THEN NORTHEAST  
4-7 MPH.  
CWR.................0 PERCENT.  
15K FT MSL WINDS....SOUTHWEST 35-45 MPH.  
MIXING HEIGHT.......6000-7000 FT AGL.  
TRANSPORT WINDS.....LIGHT WINDS UNTIL 0800, THEN NORTH AROUND 10  
MPH UNTIL 1000, THEN LIGHT UNTIL 1600, THEN  
NORTHEAST AROUND 10 MPH.  
SMOKE DISPERSAL.....POOR.  
   
TUESDAY NIGHT
 
MOSTLY CLOUDY. CHANCE OF RAIN SHOWERS. LOWS IN  
THE UPPER 30S. SOUTHEAST WINDS 4-8 MPH.    
WEDNESDAY
 
MOSTLY CLOUDY. CHANCE OF RAIN SHOWERS AND SLIGHT  
CHANCE OF THUNDERSTORMS. HIGHS IN THE LOWER 60S. SOUTHEAST WINDS  
12-18 MPH.    
THURSDAY
 
MOSTLY CLOUDY. CHANCE OF THUNDERSTORMS. LOWS IN THE  
UPPER 30S. HIGHS AROUND 70. SOUTHEAST WINDS 6-13 MPH.    
FRIDAY
 
PARTLY CLOUDY. CHANCE OF RAIN SHOWERS AND SLIGHT CHANCE  
OF THUNDERSTORMS. LOWS IN THE UPPER 30S. HIGHS IN THE LOWER 70S.  
NORTH WINDS 6-13 MPH.  
 

 
 
COZ245-190015-  
CENTRAL AND EAST ADAMS AND ARAPAHOE COUNTIES-  
INCLUDING BENNETT, BYERS, DEER TRAIL, AND LEADER  
423 AM MDT MON MAY 18 2026  
   
TODAY
 
 
SKY/WEATHER.........CLOUDY. RAIN SHOWERS LIKELY UNTIL 0900, THEN  
RAIN SHOWERS. SLIGHT CHANCE OF THUNDERSTORMS  
AFTER 1200 UNTIL 1500.  
CHANCE OF THUNDER...20 PERCENT.  
MAX TEMPERATURE.....44-48.  
24 HR TREND......20-25 DEGREES COOLER.  
MIN HUMIDITY........81-89%.  
24 HR TREND......MORE THAN 50% WETTER.  
20-FOOT WINDS.......EAST WINDS 12-18 MPH UNTIL 1200, THEN NORTH  
15-21 MPH. GUSTS UP TO 30 MPH.  
CWR.................30 PERCENT INCREASING TO 80 PERCENT IN THE  
AFTERNOON.  
15K FT MSL WINDS....SOUTHWEST 45-55 MPH.  
MIXING HEIGHT.......2000-2500 FT AGL.  
TRANSPORT WINDS.....EAST 15-20 MPH UNTIL 1500, THEN NORTH.  
SMOKE DISPERSAL.....POOR.  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLOUDY. SLIGHT CHANCE OF RAIN AND SNOW  
SHOWERS UNTIL 2400.  
CHANCE OF THUNDER...0 PERCENT.  
MIN TEMPERATURE.....28-32.  
24 HR TREND......7-10 DEGREES COOLER.  
MAX HUMIDITY........96-99%.  
24 HR TREND......LITTLE CHANGE.  
20-FOOT WINDS.......NORTH WINDS 8-16 MPH. GUSTS UP TO 30 MPH  
DECREASING TO 20 MPH AFTER MIDNIGHT.  
CWR.................0 PERCENT.  
15K FT MSL WINDS....SOUTHWEST 35-45 MPH.  
MIXING HEIGHT.......2000-2500 FT AGL.  
TRANSPORT WINDS.....NORTH 15-20 MPH UNTIL 0200. LIGHT AFTER 0500.  
SMOKE DISPERSAL.....POOR.  
   
TUESDAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY(55-60%) UNTIL 0900, THEN PARTLY  
CLOUDY(40-50%) UNTIL 1200, THEN MOSTLY  
CLOUDY(55-60%).  
CHANCE OF THUNDER...0 PERCENT.  
MAX TEMPERATURE.....52-56.  
24 HR TREND......7-10 DEGREES WARMER.  
MIN HUMIDITY........39-49%.  
24 HR TREND......35-50% DRIER.  
20-FOOT WINDS.......NORTH WINDS 4-8 MPH UNTIL 1200, THEN EAST 4-9  
MPH.  
CWR.................0 PERCENT.  
15K FT MSL WINDS....SOUTHWEST 40-50 MPH.  
MIXING HEIGHT.......5000-6000 FT AGL.  
TRANSPORT WINDS.....LIGHT WINDS UNTIL 1300, THEN EAST 10-15 MPH.  
SMOKE DISPERSAL.....POOR UNTIL 1600, THEN FAIR.  
   
TUESDAY NIGHT
 
RAIN SHOWERS LIKELY. LOWS IN THE UPPER 30S. EAST  
WINDS 4-9 MPH.    
WEDNESDAY
 
RAIN SHOWERS LIKELY AND CHANCE OF THUNDERSTORMS.  
HIGHS IN THE LOWER 60S. SOUTH WINDS 13-20 MPH.    
THURSDAY
 
MOSTLY CLOUDY. CHANCE OF THUNDERSTORMS. LOWS IN THE  
UPPER 30S. HIGHS IN THE UPPER 60S. SOUTHEAST WINDS 6-13 MPH.    
FRIDAY
 
PARTLY CLOUDY. CHANCE OF RAIN SHOWERS AND SLIGHT CHANCE  
OF THUNDERSTORMS. LOWS AROUND 40. HIGHS IN THE UPPER 60S. NORTH  
WINDS 6-13 MPH.  
 

 
 
COZ248-190015-  
LOGAN COUNTY-  
INCLUDING CROOK, MERINO, STERLING, AND PEETZ  
423 AM MDT MON MAY 18 2026  
   
TODAY
 
 
SKY/WEATHER.........CLOUDY. RAIN SHOWERS LIKELY UNTIL 1200, THEN  
RAIN SHOWERS.  
CHANCE OF THUNDER...0 PERCENT.  
MAX TEMPERATURE.....43-47.  
24 HR TREND......25-35 DEGREES COOLER.  
MIN HUMIDITY........76-82%.  
24 HR TREND......35-50% WETTER.  
20-FOOT WINDS.......NORTHEAST WINDS 13-23 MPH WITH GUSTS TO AROUND  
35 MPH.  
CWR.................20 PERCENT INCREASING TO 50 PERCENT IN THE  
AFTERNOON.  
15K FT MSL WINDS....SOUTHWEST 40-50 MPH.  
MIXING HEIGHT.......2500-3000 FT AGL.  
TRANSPORT WINDS.....NORTHEAST 20-25 MPH.  
SMOKE DISPERSAL.....FAIR.  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLOUDY UNTIL 2400, THEN PARTLY  
CLOUDY(35-45%). SLIGHT CHANCE OF RAIN SHOWERS  
UNTIL 2100.  
CHANCE OF THUNDER...0 PERCENT.  
MIN TEMPERATURE.....29-33.  
24 HR TREND......7-10 DEGREES COOLER.  
MAX HUMIDITY........94-98%.  
24 HR TREND......2-4% DRIER.  
20-FOOT WINDS.......NORTH WINDS 14-24 MPH WITH GUSTS TO AROUND 35  
MPH UNTIL 2400, THEN NORTHWEST 6-13 MPH WITH  
GUSTS TO AROUND 20 MPH.  
CWR.................0 PERCENT.  
15K FT MSL WINDS....SOUTHWEST 35-45 MPH.  
MIXING HEIGHT.......1500-2500 FT AGL.  
TRANSPORT WINDS.....NORTH 20-25 MPH UNTIL 2400, THEN 10-15 MPH.  
SMOKE DISPERSAL.....POOR.  
   
TUESDAY
 
 
SKY/WEATHER.........PARTLY CLOUDY(30-35%) UNTIL 0900, THEN MOSTLY  
SUNNY UNTIL 1200, THEN PARTLY CLOUDY(40-50%).  
CHANCE OF THUNDER...0 PERCENT.  
MAX TEMPERATURE.....56-60.  
24 HR TREND......10-15 DEGREES WARMER.  
MIN HUMIDITY........25-31%.  
24 HR TREND......35-50% DRIER.  
20-FOOT WINDS.......NORTH WINDS 4-12 MPH. GUSTS UP TO 20 MPH IN THE  
MORNING.  
CWR.................0 PERCENT.  
15K FT MSL WINDS....WEST 35-45 MPH.  
MIXING HEIGHT.......7000-8000 FT AGL.  
TRANSPORT WINDS.....NORTHWEST 10-15 MPH UNTIL 1500, THEN LIGHT  
UNTIL 1600, THEN NORTHWEST AROUND 10 MPH.  
SMOKE DISPERSAL.....POOR.  
   
TUESDAY NIGHT
 
MOSTLY CLOUDY. SLIGHT CHANCE OF RAIN SHOWERS.  
LOWS IN THE UPPER 30S. SOUTHEAST WINDS 4-7 MPH.    
WEDNESDAY
 
MOSTLY CLOUDY. CHANCE OF RAIN SHOWERS AND SLIGHT  
CHANCE OF THUNDERSTORMS. HIGHS AROUND 60. SOUTH WINDS 13-23 MPH.    
THURSDAY
 
MOSTLY CLOUDY. CHANCE OF THUNDERSTORMS. LOWS IN THE  
UPPER 30S. HIGHS IN THE UPPER 60S. SOUTHEAST WINDS 7-14 MPH.    
FRIDAY
 
MOSTLY CLOUDY. CHANCE OF RAIN SHOWERS AND SLIGHT CHANCE  
OF THUNDERSTORMS. LOWS AROUND 40. HIGHS IN THE LOWER 70S. NORTH  
WINDS 6-13 MPH.  
 

 
 
COZ249-190015-  
WASHINGTON COUNTY-  
INCLUDING AKRON, COPE, LAST CHANCE, AND OTIS  
423 AM MDT MON MAY 18 2026  
   
TODAY
 
 
SKY/WEATHER.........CLOUDY. RAIN SHOWERS LIKELY UNTIL 1200, THEN  
RAIN SHOWERS AND SLIGHT CHANCE OF  
THUNDERSTORMS.  
CHANCE OF THUNDER...20 PERCENT.  
MAX TEMPERATURE.....46-50.  
24 HR TREND......20-25 DEGREES COOLER.  
MIN HUMIDITY........79-85%.  
24 HR TREND......35-50% WETTER.  
20-FOOT WINDS.......NORTHEAST WINDS 14-24 MPH WITH GUSTS TO AROUND  
35 MPH.  
CWR.................10 PERCENT INCREASING TO 50 PERCENT IN THE  
AFTERNOON.  
15K FT MSL WINDS....SOUTHWEST 50-60 MPH.  
MIXING HEIGHT.......2500-3000 FT AGL.  
TRANSPORT WINDS.....EAST AROUND 20 MPH UNTIL 1600, THEN NORTH.  
SMOKE DISPERSAL.....FAIR.  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLOUDY(60-65%).  
CHANCE OF THUNDER...0 PERCENT.  
MIN TEMPERATURE.....29-33.  
24 HR TREND......7-10 DEGREES COOLER.  
MAX HUMIDITY........96-99%.  
24 HR TREND......2-4% DRIER.  
20-FOOT WINDS.......BREEZY. NORTH WINDS 15-25 MPH WITH GUSTS TO  
AROUND 35 MPH UNTIL 2400, THEN 8-15 MPH WITH  
GUSTS TO AROUND 25 MPH.  
CWR.................0 PERCENT.  
15K FT MSL WINDS....SOUTHWEST 40-50 MPH.  
MIXING HEIGHT.......1500-2500 FT AGL.  
TRANSPORT WINDS.....NORTH 20-25 MPH UNTIL 0100, THEN 10-15 MPH.  
SMOKE DISPERSAL.....POOR.  
   
TUESDAY
 
 
SKY/WEATHER.........PARTLY CLOUDY(35-45%) UNTIL 1500, THEN MOSTLY  
CLOUDY(50-60%).  
CHANCE OF THUNDER...0 PERCENT.  
MAX TEMPERATURE.....55-59.  
24 HR TREND......7-10 DEGREES WARMER.  
MIN HUMIDITY........31-37%.  
24 HR TREND......35-50% DRIER.  
20-FOOT WINDS.......NORTHWEST WINDS 6-13 MPH WITH GUSTS TO AROUND  
20 MPH UNTIL 1200, THEN NORTHEAST 4-9 MPH.  
CWR.................0 PERCENT.  
15K FT MSL WINDS....SOUTHWEST 40-50 MPH.  
MIXING HEIGHT.......6500-7500 FT AGL.  
TRANSPORT WINDS.....NORTH AROUND 10 MPH UNTIL 1500, THEN LIGHT  
UNTIL 1600, THEN NORTHEAST AROUND 10 MPH.  
SMOKE DISPERSAL.....POOR.  
   
TUESDAY NIGHT
 
MOSTLY CLOUDY. CHANCE OF RAIN SHOWERS. LOWS IN  
THE UPPER 30S. SOUTHEAST WINDS 4-9 MPH.    
WEDNESDAY
 
BREEZY. MOSTLY CLOUDY. CHANCE OF RAIN SHOWERS AND  
SLIGHT CHANCE OF THUNDERSTORMS. HIGHS AROUND 60. SOUTHEAST WINDS  
15-25 MPH.    
THURSDAY
 
MOSTLY CLOUDY. CHANCE OF THUNDERSTORMS. LOWS IN THE  
UPPER 30S. HIGHS IN THE UPPER 60S. SOUTHEAST WINDS 8-15 MPH.    
FRIDAY
 
MOSTLY CLOUDY. CHANCE OF RAIN SHOWERS AND SLIGHT CHANCE  
OF THUNDERSTORMS. LOWS AROUND 40. HIGHS AROUND 70. NORTH WINDS  
8-15 MPH.  
 

 
 
COZ250-190015-  
SEDGWICK COUNTY-  
INCLUDING JULESBURG, OVID, AND SEDGWICK  
423 AM MDT MON MAY 18 2026  
   
TODAY
 
 
SKY/WEATHER.........CLOUDY. RAIN SHOWERS LIKELY UNTIL 1500, THEN  
RAIN SHOWERS.  
CHANCE OF THUNDER...0 PERCENT.  
MAX TEMPERATURE.....44-48.  
24 HR TREND......25-35 DEGREES COOLER.  
MIN HUMIDITY........73-79%.  
24 HR TREND......35-50% WETTER.  
20-FOOT WINDS.......NORTHEAST WINDS 14-24 MPH WITH GUSTS TO AROUND  
35 MPH.  
CWR.................10 PERCENT INCREASING TO 20 PERCENT IN THE  
AFTERNOON.  
15K FT MSL WINDS....SOUTHWEST 50-60 MPH.  
MIXING HEIGHT.......2000-3000 FT AGL.  
TRANSPORT WINDS.....NORTHEAST 20-25 MPH.  
SMOKE DISPERSAL.....FAIR.  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLOUDY UNTIL 0300, THEN PARTLY  
CLOUDY(40-50%). SLIGHT CHANCE OF RAIN SHOWERS  
UNTIL 2100.  
CHANCE OF THUNDER...0 PERCENT.  
MIN TEMPERATURE.....29-33.  
24 HR TREND......7-10 DEGREES COOLER.  
MAX HUMIDITY........100%.  
24 HR TREND......LITTLE CHANGE.  
20-FOOT WINDS.......NORTH WINDS 10-20 MPH. GUSTS UP TO 35 MPH  
DECREASING TO 25 MPH AFTER MIDNIGHT.  
CWR.................0 PERCENT.  
15K FT MSL WINDS....SOUTHWEST 35-45 MPH.  
MIXING HEIGHT.......1500-2500 FT AGL.  
TRANSPORT WINDS.....NORTH 20-25 MPH UNTIL 0200, THEN NORTHWEST  
AROUND 15 MPH.  
SMOKE DISPERSAL.....POOR.  
   
TUESDAY
 
 
SKY/WEATHER.........PARTLY CLOUDY(30-40%) UNTIL 0900, THEN MOSTLY  
SUNNY UNTIL 1200, THEN PARTLY CLOUDY.  
CHANCE OF THUNDER...0 PERCENT.  
MAX TEMPERATURE.....57-61.  
24 HR TREND......10-15 DEGREES WARMER.  
MIN HUMIDITY........24-28%.  
24 HR TREND......35-50% DRIER.  
20-FOOT WINDS.......NORTH WINDS 5-13 MPH. GUSTS UP TO 20 MPH IN THE  
MORNING.  
CWR.................0 PERCENT.  
15K FT MSL WINDS....WEST 35-45 MPH.  
MIXING HEIGHT.......7500-8500 FT AGL.  
TRANSPORT WINDS.....NORTHWEST 10-15 MPH.  
SMOKE DISPERSAL.....POOR UNTIL 1200, THEN GOOD.  
   
TUESDAY NIGHT
 
MOSTLY CLOUDY. LOWS IN THE UPPER 30S. SOUTHEAST  
WINDS 4-9 MPH.    
WEDNESDAY
 
MOSTLY CLOUDY. SLIGHT CHANCE OF THUNDERSTORMS. HIGHS  
IN THE UPPER 50S. SOUTH WINDS 14-24 MPH.    
THURSDAY
 
MOSTLY CLOUDY. CHANCE OF THUNDERSTORMS. LOWS IN THE  
UPPER 30S. HIGHS IN THE MID 60S. SOUTHEAST WINDS 10-17 MPH.    
FRIDAY
 
MOSTLY CLOUDY. CHANCE OF RAIN SHOWERS AND SLIGHT CHANCE  
OF THUNDERSTORMS. LOWS AROUND 40. HIGHS AROUND 70. NORTH WINDS  
7-14 MPH.  
 

 
 
COZ251-190015-  
PHILLIPS COUNTY-  
INCLUDING AMHERST, HAXTUN, AND HOLYOKE  
423 AM MDT MON MAY 18 2026  
   
TODAY
 
 
SKY/WEATHER.........CLOUDY. RAIN SHOWERS LIKELY UNTIL 1200, THEN  
CHANCE OF RAIN SHOWERS UNTIL 1500, THEN RAIN  
SHOWERS.  
CHANCE OF THUNDER...0 PERCENT.  
MAX TEMPERATURE.....44-48.  
24 HR TREND......25-35 DEGREES COOLER.  
MIN HUMIDITY........72-78%.  
24 HR TREND......35-50% WETTER.  
20-FOOT WINDS.......NORTHEAST WINDS 14-23 MPH WITH GUSTS TO AROUND  
35 MPH.  
CWR.................10 PERCENT INCREASING TO 20 PERCENT IN THE  
AFTERNOON.  
15K FT MSL WINDS....SOUTHWEST 50-60 MPH.  
MIXING HEIGHT.......2000-3000 FT AGL.  
TRANSPORT WINDS.....NORTHEAST 20-25 MPH.  
SMOKE DISPERSAL.....FAIR.  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLOUDY UNTIL 0300, THEN PARTLY  
CLOUDY(40-50%). SLIGHT CHANCE OF RAIN SHOWERS  
UNTIL 2100.  
CHANCE OF THUNDER...0 PERCENT.  
MIN TEMPERATURE.....AROUND 31.  
24 HR TREND......7-10 DEGREES COOLER.  
MAX HUMIDITY........100%.  
24 HR TREND......LITTLE CHANGE.  
20-FOOT WINDS.......NORTH WINDS 16-24 MPH WITH GUSTS TO AROUND 35  
MPH UNTIL 2400, THEN NORTHWEST 8-14 MPH WITH  
GUSTS TO AROUND 25 MPH.  
CWR.................0 PERCENT.  
15K FT MSL WINDS....SOUTHWEST 45-55 MPH.  
MIXING HEIGHT.......1500-2500 FT AGL.  
TRANSPORT WINDS.....NORTH 20-25 MPH UNTIL 0300, THEN AROUND 15 MPH.  
SMOKE DISPERSAL.....POOR.  
   
TUESDAY
 
 
SKY/WEATHER.........PARTLY CLOUDY(40-50%) UNTIL 0900, THEN MOSTLY  
SUNNY UNTIL 1200, THEN PARTLY CLOUDY.  
CHANCE OF THUNDER...0 PERCENT.  
MAX TEMPERATURE.....58-62.  
24 HR TREND......10-15 DEGREES WARMER.  
MIN HUMIDITY........24-28%.  
24 HR TREND......35-50% DRIER.  
20-FOOT WINDS.......NORTH WINDS 6-14 MPH WITH GUSTS TO AROUND 20  
MPH.  
CWR.................0 PERCENT.  
15K FT MSL WINDS....SOUTHWEST 35-45 MPH.  
MIXING HEIGHT.......7500-8500 FT AGL.  
TRANSPORT WINDS.....NORTHWEST 10-15 MPH.  
SMOKE DISPERSAL.....POOR UNTIL 1600, THEN GOOD.  
   
TUESDAY NIGHT
 
MOSTLY CLOUDY. LOWS IN THE UPPER 30S. SOUTHEAST  
WINDS 4-9 MPH.    
WEDNESDAY
 
MOSTLY CLOUDY. CHANCE OF RAIN SHOWERS AND SLIGHT  
CHANCE OF THUNDERSTORMS. HIGHS IN THE UPPER 50S. SOUTHEAST WINDS  
14-24 MPH.    
THURSDAY
 
MOSTLY CLOUDY. CHANCE OF THUNDERSTORMS. LOWS IN THE  
UPPER 30S. HIGHS IN THE MID 60S. SOUTHEAST WINDS 9-16 MPH.    
FRIDAY
 
MOSTLY CLOUDY. CHANCE OF RAIN SHOWERS AND SLIGHT CHANCE  
OF THUNDERSTORMS. LOWS AROUND 40. HIGHS AROUND 70. NORTH WINDS  
7-14 MPH.  
 

 
 
COZ246-190015-  
NORTH AND NORTHEAST ELBERT COUNTY BELOW 6000 FEET/NORTH LINCOLN  
COUNTY-  
INCLUDING AGATE, HUGO, LIMON, AND MATHESON  
423 AM MDT MON MAY 18 2026  
   
TODAY
 
 
SKY/WEATHER.........CLOUDY. CHANCE OF RAIN SHOWERS UNTIL 1200, THEN  
RAIN SHOWERS AND SLIGHT CHANCE OF  
THUNDERSTORMS.  
CHANCE OF THUNDER...20 PERCENT.  
MAX TEMPERATURE.....47-53.  
24 HR TREND......20-25 DEGREES COOLER.  
MIN HUMIDITY........73-83%.  
24 HR TREND......35-50% WETTER.  
20-FOOT WINDS.......NORTHEAST WINDS 12-22 MPH WITH GUSTS TO AROUND  
35 MPH.  
CWR.................10 PERCENT INCREASING TO 60 PERCENT IN THE  
AFTERNOON.  
15K FT MSL WINDS....SOUTHWEST 45-55 MPH.  
MIXING HEIGHT.......2500-3500 FT AGL.  
TRANSPORT WINDS.....EAST 15-20 MPH UNTIL 1500, THEN NORTH 20-25  
MPH.  
SMOKE DISPERSAL.....POOR.  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLOUDY. SLIGHT CHANCE OF RAIN SHOWERS  
AFTER 2100 UNTIL 2400.  
CHANCE OF THUNDER...0 PERCENT.  
MIN TEMPERATURE.....26-30.  
24 HR TREND......7-10 DEGREES COOLER.  
MAX HUMIDITY........100%.  
24 HR TREND......LITTLE CHANGE.  
20-FOOT WINDS.......BREEZY. NORTH WINDS 18-28 MPH WITH GUSTS TO  
AROUND 40 MPH UNTIL 2400, THEN 10-17 MPH WITH  
GUSTS TO AROUND 30 MPH.  
CWR.................0 PERCENT.  
15K FT MSL WINDS....SOUTHWEST 40-50 MPH.  
MIXING HEIGHT.......2000-2500 FT AGL.  
TRANSPORT WINDS.....NORTH 20-25 MPH UNTIL 0200, THEN AROUND 15 MPH.  
SMOKE DISPERSAL.....POOR.  
   
TUESDAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY UNTIL 0900, THEN PARTLY  
CLOUDY(50-60%) UNTIL 1500, THEN MOSTLY  
CLOUDY(60-65%).  
CHANCE OF THUNDER...0 PERCENT.  
MAX TEMPERATURE.....53-57.  
24 HR TREND......4-7 DEGREES WARMER.  
MIN HUMIDITY........35-45%.  
24 HR TREND......35-50% DRIER.  
20-FOOT WINDS.......NORTH WINDS 4-9 MPH UNTIL 1200, THEN EAST.  
CWR.................0 PERCENT.  
15K FT MSL WINDS....SOUTHWEST 40-50 MPH.  
MIXING HEIGHT.......5500-6500 FT AGL.  
TRANSPORT WINDS.....NORTH AROUND 10 MPH UNTIL 1100, THEN LIGHT  
UNTIL 1300, THEN SOUTHEAST 10-15 MPH.  
SMOKE DISPERSAL.....POOR UNTIL 1600, THEN GOOD.  
   
TUESDAY NIGHT
 
CLOUDY. CHANCE OF RAIN SHOWERS. LOWS IN THE MID  
30S. EAST WINDS 5-12 MPH.    
WEDNESDAY
 
RAIN SHOWERS LIKELY AND CHANCE OF THUNDERSTORMS.  
HIGHS IN THE UPPER 50S. SOUTH WINDS 14-24 MPH.    
THURSDAY
 
MOSTLY CLOUDY. CHANCE OF THUNDERSTORMS. LOWS IN THE  
MID 30S. HIGHS IN THE MID 60S. SOUTHEAST WINDS 6-13 MPH.    
FRIDAY
 
PARTLY CLOUDY. CHANCE OF RAIN SHOWERS AND SLIGHT CHANCE  
OF THUNDERSTORMS. LOWS IN THE UPPER 30S. HIGHS IN THE UPPER 60S.  
NORTH WINDS 6-13 MPH.  
 

 
 
COZ247-190015-  
SOUTHEAST ELBERT COUNTY BELOW 6000 FEET/SOUTH LINCOLN COUNTY-  
INCLUDING FORDER, KARVAL, KUTCH, AND PUNKIN CENTER  
423 AM MDT MON MAY 18 2026  
   
TODAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY. SLIGHT CHANCE OF RAIN SHOWERS  
UNTIL 0900, THEN CHANCE OF RAIN SHOWERS. SLIGHT  
CHANCE OF THUNDERSTORMS AFTER 1200.  
CHANCE OF THUNDER...20 PERCENT.  
MAX TEMPERATURE.....55-65.  
24 HR TREND......20-25 DEGREES COOLER.  
MIN HUMIDITY........47-57%.  
24 HR TREND......35-50% WETTER.  
20-FOOT WINDS.......EAST WINDS 10-16 MPH WITH GUSTS TO AROUND 25  
MPH UNTIL 1200, THEN NORTH 14-24 MPH WITH GUSTS  
TO AROUND 45 MPH.  
CWR.................10 PERCENT.  
15K FT MSL WINDS....SOUTHWEST 50-60 MPH.  
MIXING HEIGHT.......4500-5500 FT AGL.  
TRANSPORT WINDS.....EAST AROUND 15 MPH UNTIL 1100, THEN SOUTHEAST  
UNTIL 1400, THEN SOUTH UNTIL 1500, THEN WEST  
UNTIL 1600, THEN NORTH AROUND 30 MPH.  
SMOKE DISPERSAL.....FAIR UNTIL 1400, THEN GOOD.  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLOUDY(50-60%) UNTIL 2100, THEN PARTLY  
CLOUDY(50-60%) UNTIL 2400, THEN MOSTLY  
CLOUDY(50-60%).  
CHANCE OF THUNDER...0 PERCENT.  
MIN TEMPERATURE.....27-33.  
24 HR TREND......7-10 DEGREES COOLER.  
MAX HUMIDITY........88-98%.  
24 HR TREND......LITTLE CHANGE.  
20-FOOT WINDS.......WINDY. NORTH WINDS 23-33 MPH WITH GUSTS TO  
AROUND 45 MPH UNTIL 2400, THEN 13-23 MPH WITH  
GUSTS TO AROUND 35 MPH.  
CWR.................0 PERCENT.  
15K FT MSL WINDS....SOUTHWEST 45-55 MPH.  
MIXING HEIGHT.......2500 FT AGL.  
TRANSPORT WINDS.....NORTH 30-35 MPH UNTIL 2400. AROUND 15 MPH AFTER  
0400.  
SMOKE DISPERSAL.....FAIR.  
   
TUESDAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY(50-60%) UNTIL 0900, THEN MOSTLY  
SUNNY UNTIL 1200, THEN PARTLY CLOUDY(30-40%).  
CHANCE OF THUNDER...0 PERCENT.  
MAX TEMPERATURE.....56-62.  
24 HR TREND......2-4 DEGREES WARMER.  
MIN HUMIDITY........31-35%.  
24 HR TREND......25-35% DRIER.  
20-FOOT WINDS.......NORTH WINDS 6-13 MPH UNTIL 1200, THEN EAST.  
GUSTS UP TO 20 MPH.  
CWR.................0 PERCENT.  
15K FT MSL WINDS....SOUTHWEST 45-55 MPH.  
MIXING HEIGHT.......6000-7000 FT AGL.  
TRANSPORT WINDS.....NORTH 10-15 MPH UNTIL 1000, THEN LIGHT UNTIL  
1300, THEN SOUTHEAST 10-15 MPH.  
SMOKE DISPERSAL.....POOR UNTIL 1600, THEN GOOD.  
   
TUESDAY NIGHT
 
MOSTLY CLOUDY. CHANCE OF RAIN SHOWERS. LOWS IN  
THE MID 30S. EAST WINDS 8-15 MPH.    
WEDNESDAY
 
RAIN SHOWERS LIKELY AND CHANCE OF THUNDERSTORMS.  
HIGHS IN THE UPPER 50S. SOUTHEAST WINDS 14-24 MPH.    
THURSDAY
 
MOSTLY CLOUDY. CHANCE OF THUNDERSTORMS. LOWS IN THE  
UPPER 30S. HIGHS IN THE UPPER 60S. SOUTHEAST WINDS 6-13 MPH.    
FRIDAY
 
PARTLY CLOUDY. SLIGHT CHANCE OF THUNDERSTORMS. LOWS IN  
THE UPPER 30S. HIGHS IN THE UPPER 60S. NORTHEAST WINDS 8-15 MPH.  
 

 
 
COZ215-190015-  
LARIMER AND BOULDER COUNTIES BETWEEN 6000 AND 9000 FEET-  
INCLUDING ESTES PARK, GLENDEVEY, LARAMIE RIVER VALLEY, NEDERLAND,  
AND RED FEATHER LAKES  
423 AM MDT MON MAY 18 2026  
   
TODAY
 
 
SKY/WEATHER.........CLOUDY. RAIN SHOWERS UNTIL 1500. SNOW SHOWERS.  
SLIGHT CHANCE OF THUNDERSTORMS AFTER 1200.  
CHANCE OF THUNDER...20 PERCENT.  
MAX TEMPERATURE.....31-39.  
24 HR TREND......15-20 DEGREES COOLER.  
MIN HUMIDITY........78-88%.  
24 HR TREND......35-50% WETTER.  
20-FOOT WINDS.......  
VALLEYS/LWR SLOPES...NORTHEAST WINDS 7-14 MPH WITH GUSTS TO  
AROUND 25 MPH.  
RIDGES/UPR SLOPES....NORTHEAST WINDS 6-14 MPH WITH GUSTS TO  
AROUND 25 MPH.  
CWR.................90 PERCENT DECREASING TO 80 PERCENT IN THE  
AFTERNOON.  
15K FT MSL WINDS....SOUTHWEST 35-45 MPH.  
MIXING HEIGHT.......1500-2500 FT AGL.  
TRANSPORT WINDS.....EAST 15-20 MPH UNTIL 1500, THEN NORTHEAST.  
SMOKE DISPERSAL.....POOR.  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLOUDY(60-65%). SNOW SHOWERS LIKELY  
UNTIL 2100, THEN CHANCE OF SNOW SHOWERS UNTIL  
0300, THEN SLIGHT CHANCE OF SNOW SHOWERS.  
CHANCE OF THUNDER...0 PERCENT.  
MIN TEMPERATURE.....20-28.  
24 HR TREND......4-7 DEGREES COOLER.  
MAX HUMIDITY........90-100%.  
24 HR TREND......LITTLE CHANGE.  
20-FOOT WINDS.......  
VALLEYS/LWR SLOPES...NORTH WINDS 4-8 MPH WITH GUSTS TO AROUND  
20 MPH UNTIL 2400, THEN NORTHWEST 4-6 MPH.  
RIDGES/UPR SLOPES....NORTH WINDS 4-7 MPH UNTIL 2400, THEN  
NORTHWEST 4-6 MPH.  
CWR.................20 PERCENT DECREASING TO 10 PERCENT AFTER  
MIDNIGHT.  
15K FT MSL WINDS....WEST 25-35 MPH.  
MIXING HEIGHT.......1500-2500 FT AGL.  
TRANSPORT WINDS.....NORTH 10-15 MPH UNTIL 0100, THEN LIGHT.  
SMOKE DISPERSAL.....POOR.  
   
TUESDAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY(60-65%). SLIGHT CHANCE OF SNOW  
SHOWERS UNTIL 1200, THEN SNOW SHOWERS LIKELY  
WITH POSSIBLE RAIN SHOWERS AND THUNDERSTORMS.  
CHANCE OF THUNDER...20 PERCENT.  
MAX TEMPERATURE.....35-45.  
24 HR TREND......4-7 DEGREES WARMER.  
MIN HUMIDITY........67-77%.  
24 HR TREND......LITTLE CHANGE.  
20-FOOT WINDS.......  
VALLEYS/LWR SLOPES...EAST WINDS 4-8 MPH.  
RIDGES/UPR SLOPES....EAST WINDS 4-8 MPH.  
CWR.................0 PERCENT INCREASING TO 20 PERCENT IN THE  
AFTERNOON.  
15K FT MSL WINDS....SOUTHWEST 25-35 MPH.  
MIXING HEIGHT.......3000-4000 FT AGL.  
TRANSPORT WINDS.....LIGHT WINDS UNTIL 0900, THEN SOUTHEAST 10-15  
MPH.  
SMOKE DISPERSAL.....POOR.  
   
TUESDAY NIGHT
 
MOSTLY CLOUDY. CHANCE OF SNOW SHOWERS AND RAIN  
SHOWERS. LOWS IN THE UPPER 20S. SOUTH WINDS 4-8 MPH.    
WEDNESDAY
 
NOT AS COOL. MOSTLY CLOUDY. CHANCE OF THUNDERSTORMS  
AND SLIGHT CHANCE OF SNOW SHOWERS. HIGHS IN THE LOWER 50S.  
SOUTHEAST WINDS 4-6 MPH.    
THURSDAY
 
MOSTLY CLOUDY. CHANCE OF THUNDERSTORMS. LOWS IN THE  
LOWER 30S. HIGHS IN THE UPPER 50S. WEST WINDS 4-6 MPH.    
FRIDAY
 
MOSTLY CLOUDY. CHANCE OF THUNDERSTORMS. LOWS IN THE MID  
30S. HIGHS IN THE LOWER 60S. WEST WINDS 4-7 MPH.  
 

 
 
COZ216-190015-  
JEFFERSON AND WEST DOUGLAS COUNTIES ABOVE 6000 FEET/GILPIN/CLEAR  
CREEK/NORTHEAST PARK COUNTIES BELOW 9000 FEET-  
INCLUDING BAILEY, CENTRAL CITY, EVERGREEN, GEORGETOWN,  
IDAHO SPRINGS, NORTHERN RAMPART RANGE, TARRYALL, AND WESTCREEK  
423 AM MDT MON MAY 18 2026  
   
TODAY
 
 
SKY/WEATHER.........CLOUDY. SLIGHT CHANCE OF THUNDERSTORMS UNTIL  
1200. SNOW SHOWERS AND RAIN SHOWERS. CHANCE OF  
THUNDERSTORMS AFTER 1200.  
CHANCE OF THUNDER...30 PERCENT.  
MAX TEMPERATURE.....36-46.  
24 HR TREND......15-20 DEGREES COOLER.  
MIN HUMIDITY........69-79%.  
24 HR TREND......25-35% WETTER.  
20-FOOT WINDS.......  
VALLEYS/LWR SLOPES...NORTHEAST WINDS 5-13 MPH WITH GUSTS TO  
AROUND 25 MPH.  
RIDGES/UPR SLOPES....SOUTHEAST WINDS 5-12 MPH UNTIL 1200, THEN  
NORTH 7-14 MPH. GUSTS UP TO 25 MPH.  
CWR.................70 PERCENT INCREASING TO 80 PERCENT IN THE  
AFTERNOON.  
15K FT MSL WINDS....SOUTHWEST 35-45 MPH.  
MIXING HEIGHT.......2500-3500 FT AGL.  
TRANSPORT WINDS.....SOUTHEAST 10-15 MPH UNTIL 1100, THEN AROUND 20  
MPH UNTIL 1200, THEN NORTH.  
SMOKE DISPERSAL.....POOR.  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLOUDY. SNOW SHOWERS AND RAIN SHOWERS  
LIKELY UNTIL 2100, THEN CHANCE OF SNOW SHOWERS  
UNTIL 0300, THEN SLIGHT CHANCE OF SNOW SHOWERS.  
CHANCE OF THUNDER...0 PERCENT.  
MIN TEMPERATURE.....23-31.  
24 HR TREND......7-10 DEGREES COOLER.  
MAX HUMIDITY........90-100%.  
24 HR TREND......LITTLE CHANGE.  
20-FOOT WINDS.......  
VALLEYS/LWR SLOPES...NORTHEAST WINDS 4-9 MPH. GUSTS UP TO 20  
MPH IN THE EVENING.  
RIDGES/UPR SLOPES....NORTHEAST WINDS 4-9 MPH. GUSTS UP TO 25  
MPH IN THE EVENING.  
CWR.................10 PERCENT.  
15K FT MSL WINDS....SOUTHWEST 30-40 MPH.  
MIXING HEIGHT.......1500-2000 FT AGL.  
TRANSPORT WINDS.....NORTH AROUND 10 MPH UNTIL 0100, THEN LIGHT.  
SMOKE DISPERSAL.....POOR.  
   
TUESDAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY. SLIGHT CHANCE OF SNOW SHOWERS  
AFTER 0900 UNTIL 1200, THEN RAIN SHOWERS, SNOW  
SHOWERS LIKELY AND SLIGHT CHANCE OF  
THUNDERSTORMS.  
CHANCE OF THUNDER...20 PERCENT.  
MAX TEMPERATURE.....37-47.  
24 HR TREND......2-4 DEGREES WARMER.  
MIN HUMIDITY........68-78%.  
24 HR TREND......2-4% WETTER.  
20-FOOT WINDS.......  
VALLEYS/LWR SLOPES...EAST WINDS 4-12 MPH. GUSTS UP TO 20 MPH IN  
THE AFTERNOON.  
RIDGES/UPR SLOPES....EAST WINDS 4-12 MPH. GUSTS UP TO 20 MPH IN  
THE AFTERNOON.  
CWR.................10 PERCENT INCREASING TO 30 PERCENT IN THE  
AFTERNOON.  
15K FT MSL WINDS....SOUTHWEST 30-40 MPH.  
MIXING HEIGHT.......3000-4000 FT AGL.  
TRANSPORT WINDS.....LIGHT WINDS UNTIL 1000, THEN EAST 10-15 MPH  
UNTIL 1600, THEN NORTHEAST.  
SMOKE DISPERSAL.....POOR.  
   
TUESDAY NIGHT
 
RAIN SHOWERS AND SNOW SHOWERS. LOWS IN THE LOWER  
30S. EAST WINDS 4-8 MPH.    
WEDNESDAY
 
NOT AS COOL. MOSTLY CLOUDY. CHANCE OF THUNDERSTORMS  
AND SNOW SHOWERS. HIGHS IN THE LOWER 50S. SOUTHEAST WINDS  
4-6 MPH.    
THURSDAY
 
PARTLY CLOUDY. CHANCE OF THUNDERSTORMS. LOWS IN THE  
MID 30S. HIGHS AROUND 60. NORTHWEST WINDS 4-7 MPH.    
FRIDAY
 
MOSTLY CLOUDY. CHANCE OF THUNDERSTORMS. LOWS IN THE  
UPPER 30S. HIGHS IN THE LOWER 60S. NORTHWEST WINDS 4-7 MPH.  
 

 
 
COZ211-190015-  
JACKSON COUNTY BELOW 9000 FEET-  
INCLUDING GOULD, NORTH PARK, RAND, SPICER, AND WALDEN  
423 AM MDT MON MAY 18 2026  
   
TODAY
 
 
SKY/WEATHER.........CLOUDY. RAIN SHOWERS UNTIL 0900. SNOW SHOWERS  
AND SLIGHT CHANCE OF THUNDERSTORMS.  
CHANCE OF THUNDER...20 PERCENT.  
MAX TEMPERATURE.....37-43.  
24 HR TREND......10-15 DEGREES COOLER.  
MIN HUMIDITY........71-81%.  
24 HR TREND......25-35% WETTER.  
20-FOOT WINDS.......EAST WINDS 8-15 MPH UNTIL 1200, THEN NORTHEAST  
7-14 MPH. GUSTS UP TO 25 MPH.  
CWR.................80 PERCENT INCREASING TO 90 PERCENT IN THE  
AFTERNOON.  
15K FT MSL WINDS....SOUTHWEST 30-40 MPH.  
MIXING HEIGHT.......BELOW 1000 FT AGL UNTIL 0700, THEN 2000-3000 FT  
AGL.  
TRANSPORT WINDS.....SOUTHEAST 15-20 MPH UNTIL 1000, THEN 20-25 MPH  
UNTIL 1400, THEN EAST AROUND 15 MPH UNTIL 1500,  
THEN NORTH.  
SMOKE DISPERSAL.....POOR.  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLOUDY. CHANCE OF SNOW SHOWERS UNTIL  
0300, THEN SLIGHT CHANCE OF SNOW SHOWERS.  
CHANCE OF THUNDER...0 PERCENT.  
MIN TEMPERATURE.....19-23.  
24 HR TREND......10-15 DEGREES COOLER.  
MAX HUMIDITY........91-100%.  
24 HR TREND......LITTLE CHANGE.  
20-FOOT WINDS.......NORTH WINDS 4-12 MPH. GUSTS UP TO 20 MPH IN THE  
EVENING.  
CWR.................10 PERCENT.  
15K FT MSL WINDS....SOUTHWEST 25-35 MPH.  
MIXING HEIGHT.......1000-2000 FT AGL.  
TRANSPORT WINDS.....NORTH 10-15 MPH UNTIL 2400, THEN LIGHT.  
SMOKE DISPERSAL.....POOR.  
   
TUESDAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY(60-65%) UNTIL 0900, THEN PARTLY  
CLOUDY(40-50%) UNTIL 1200, THEN MOSTLY  
CLOUDY(60-65%). CHANCE OF SNOW SHOWERS AND  
SLIGHT CHANCE OF THUNDERSTORMS AFTER 1200.  
CHANCE OF RAIN SHOWERS AFTER 1500.  
CHANCE OF THUNDER...20 PERCENT.  
MAX TEMPERATURE.....43-47.  
24 HR TREND......4-7 DEGREES WARMER.  
MIN HUMIDITY........52-58%.  
24 HR TREND......20-25% DRIER.  
20-FOOT WINDS.......NORTHWEST WINDS 4-8 MPH.  
CWR.................0 PERCENT INCREASING TO 10 PERCENT IN THE  
AFTERNOON.  
15K FT MSL WINDS....SOUTHWEST 20-30 MPH.  
MIXING HEIGHT.......4500-5500 FT AGL.  
TRANSPORT WINDS.....LIGHT WINDS UNTIL 1200, THEN WEST 10-15 MPH.  
SMOKE DISPERSAL.....POOR.  
   
TUESDAY NIGHT
 
MOSTLY CLOUDY. SLIGHT CHANCE OF SNOW SHOWERS.  
LOWS IN THE MID 20S. NORTHEAST WINDS 4-6 MPH.    
WEDNESDAY
 
PARTLY CLOUDY. SLIGHT CHANCE OF THUNDERSTORMS AND  
SNOW SHOWERS. HIGHS IN THE LOWER 50S. WEST WINDS 4-7 MPH.    
THURSDAY
 
PARTLY CLOUDY. CHANCE OF THUNDERSTORMS AND SNOW  
SHOWERS. LOWS IN THE MID 20S. HIGHS IN THE MID 50S. SOUTHWEST  
WINDS 4-8 MPH.    
FRIDAY
 
PARTLY CLOUDY. SLIGHT CHANCE OF THUNDERSTORMS. LOWS IN  
THE UPPER 20S. HIGHS IN THE UPPER 50S. SOUTHWEST WINDS 4-9 MPH.  
 

 
 
COZ213-190015-  
GRAND AND SUMMIT COUNTIES BELOW 9000 FEET-  
INCLUDING DILLON, FRASER, GRANBY, GRAND LAKE,  
GREEN MOUNTAIN RESERVOIR, HOT SULPHUR SPRINGS, KREMMLING,  
MIDDLE PARK, AND WILLIAMS FORK RESERVOIR  
423 AM MDT MON MAY 18 2026  
   
TODAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY. SLIGHT CHANCE OF THUNDERSTORMS  
UNTIL 1200. SNOW SHOWERS AND RAIN SHOWERS.  
CHANCE OF THUNDERSTORMS AFTER 1200.  
CHANCE OF THUNDER...40 PERCENT.  
MAX TEMPERATURE.....43-53.  
24 HR TREND......7-10 DEGREES COOLER.  
MIN HUMIDITY........50-60%.  
24 HR TREND......20-25% WETTER.  
20-FOOT WINDS.......SOUTHEAST WINDS 9-16 MPH WITH GUSTS TO AROUND  
30 MPH UNTIL 1200, THEN WEST 5-12 MPH WITH  
GUSTS TO AROUND 20 MPH.  
CWR.................50 PERCENT INCREASING TO 60 PERCENT IN THE  
AFTERNOON.  
15K FT MSL WINDS....SOUTHWEST 30-40 MPH.  
MIXING HEIGHT.......5000-6000 FT AGL.  
TRANSPORT WINDS.....SOUTHEAST 15-20 MPH UNTIL 0900, THEN SOUTH  
AROUND 25 MPH UNTIL 1200, THEN WEST.  
SMOKE DISPERSAL.....POOR UNTIL 0900, THEN GOOD.  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLOUDY. CHANCE OF RAIN SHOWERS UNTIL  
2100. CHANCE OF SNOW SHOWERS UNTIL 0300, THEN  
SLIGHT CHANCE OF SNOW SHOWERS.  
CHANCE OF THUNDER...0 PERCENT.  
MIN TEMPERATURE.....23-29.  
24 HR TREND......7-10 DEGREES COOLER.  
MAX HUMIDITY........85-95%.  
24 HR TREND......2-4% WETTER.  
20-FOOT WINDS.......NORTHWEST WINDS 4-9 MPH. GUSTS UP TO 20 MPH IN  
THE EVENING.  
CWR.................10 PERCENT.  
15K FT MSL WINDS....SOUTHWEST 25-35 MPH.  
MIXING HEIGHT.......1500-2500 FT AGL.  
TRANSPORT WINDS.....WEST 15-20 MPH UNTIL 2000. LIGHT AFTER 0300.  
SMOKE DISPERSAL.....POOR.  
   
TUESDAY
 
 
SKY/WEATHER.........PARTLY CLOUDY(40-50%) UNTIL 1200, THEN MOSTLY  
CLOUDY(55-60%). CHANCE OF RAIN SHOWERS, SNOW  
SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS  
AFTER 1200.  
CHANCE OF THUNDER...20 PERCENT.  
MAX TEMPERATURE.....45-55.  
24 HR TREND......LITTLE CHANGE.  
MIN HUMIDITY........38-48%.  
24 HR TREND......15-20% DRIER.  
20-FOOT WINDS.......WEST WINDS 4-9 MPH. GUSTS UP TO 20 MPH IN THE  
AFTERNOON.  
CWR.................0 PERCENT INCREASING TO 10 PERCENT IN THE  
AFTERNOON.  
15K FT MSL WINDS....SOUTHWEST 25-35 MPH.  
MIXING HEIGHT.......7000-8000 FT AGL.  
TRANSPORT WINDS.....LIGHT WINDS UNTIL 1000. WEST AROUND 20 MPH  
AFTER 1300.  
SMOKE DISPERSAL.....POOR UNTIL 1200, THEN VERY GOOD.  
   
TUESDAY NIGHT
 
MOSTLY CLOUDY. CHANCE OF RAIN AND SNOW SHOWERS.  
LOWS IN THE UPPER 20S. NORTHEAST WINDS 4-6 MPH.    
WEDNESDAY
 
PARTLY CLOUDY. CHANCE OF THUNDERSTORMS AND SLIGHT  
CHANCE OF SNOW SHOWERS. HIGHS IN THE MID 50S. NORTHWEST WINDS  
4-6 MPH.    
THURSDAY
 
PARTLY CLOUDY. CHANCE OF THUNDERSTORMS. LOWS IN THE  
UPPER 20S. HIGHS IN THE UPPER 50S. WEST WINDS 4-6 MPH.    
FRIDAY
 
PARTLY CLOUDY. CHANCE OF THUNDERSTORMS. LOWS AROUND 30.  
HIGHS AROUND 60. SOUTHWEST WINDS 4-6 MPH.  
 

 
 
COZ214-190015-  
CENTRAL AND SOUTHEAST PARK COUNTY-  
INCLUDING ELEVEN MILE CANYON RESERVOIR, FAIRPLAY, GUFFEY,  
HARTSEL, LAKE GEORGE, AND SOUTH PARK  
423 AM MDT MON MAY 18 2026  
   
TODAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY. SNOW SHOWERS LIKELY AND SLIGHT  
CHANCE OF THUNDERSTORMS UNTIL 1200, THEN SNOW  
SHOWERS AND CHANCE OF THUNDERSTORMS.  
CHANCE OF THUNDER...30 PERCENT.  
MAX TEMPERATURE.....46-54.  
24 HR TREND......7-10 DEGREES COOLER.  
MIN HUMIDITY........33-43%.  
24 HR TREND......10-15% WETTER.  
20-FOOT WINDS.......  
VALLEYS/LWR SLOPES...BREEZY. SOUTH WINDS 16-26 MPH UNTIL 1200,  
THEN SOUTHWEST 13-23 MPH. GUSTS UP TO 40  
MPH.  
RIDGES/UPR SLOPES....BREEZY. SOUTH WINDS 17-27 MPH UNTIL 1200,  
THEN SOUTHWEST 14-24 MPH. GUSTS UP TO 40  
MPH.  
CWR.................20 PERCENT DECREASING TO 10 PERCENT IN THE  
AFTERNOON.  
15K FT MSL WINDS....SOUTHWEST 35-45 MPH.  
MIXING HEIGHT.......8000-9000 FT AGL.  
TRANSPORT WINDS.....SOUTH 20-25 MPH UNTIL 0900, THEN 30-35 MPH  
UNTIL 1100, THEN SOUTHWEST 35-40 MPH UNTIL  
1400, THEN WEST 25-30 MPH UNTIL 1700, THEN  
AROUND 20 MPH.  
SMOKE DISPERSAL.....FAIR UNTIL 0900, THEN EXCELLENT UNTIL 1600,  
THEN VERY GOOD.  
   
TONIGHT
 
 
SKY/WEATHER.........PARTLY CLOUDY(40-50%) UNTIL 0300, THEN MOSTLY  
CLOUDY(50-60%). SLIGHT CHANCE OF SNOW SHOWERS  
UNTIL 2400.  
CHANCE OF THUNDER...0 PERCENT.  
MIN TEMPERATURE.....24-30.  
24 HR TREND......7-10 DEGREES COOLER.  
MAX HUMIDITY........81-91%.  
24 HR TREND......LITTLE CHANGE.  
20-FOOT WINDS.......  
VALLEYS/LWR SLOPES...NORTHWEST WINDS 5-12 MPH WITH GUSTS TO  
AROUND 25 MPH UNTIL 2400, THEN SOUTHEAST  
4-7 MPH.  
RIDGES/UPR SLOPES....WEST WINDS 6-13 MPH WITH GUSTS TO AROUND  
30 MPH UNTIL 2400, THEN SOUTH 4-9 MPH.  
CWR.................0 PERCENT.  
15K FT MSL WINDS....SOUTHWEST 25-35 MPH.  
MIXING HEIGHT.......6000-7000 FT AGL UNTIL 2000, THEN 1500 FT AGL.  
TRANSPORT WINDS.....WEST 15-20 MPH UNTIL 2100, THEN AROUND 10 MPH  
UNTIL 2400, THEN SOUTHEAST.  
SMOKE DISPERSAL.....GOOD UNTIL 2000, THEN POOR.  
   
TUESDAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY(60-65%) UNTIL 0900, THEN PARTLY  
CLOUDY(40-50%) UNTIL 1200, THEN MOSTLY  
CLOUDY(50-60%). CHANCE OF SNOW SHOWERS AFTER  
1200 UNTIL 1500. CHANCE OF RAIN SHOWERS AFTER  
1200. SLIGHT CHANCE OF THUNDERSTORMS AND SNOW  
SHOWERS AFTER 1500.  
CHANCE OF THUNDER...20 PERCENT.  
MAX TEMPERATURE.....43-53.  
24 HR TREND......2-4 DEGREES COOLER.  
MIN HUMIDITY........43-53%.  
24 HR TREND......7-10% WETTER.  
20-FOOT WINDS.......  
VALLEYS/LWR SLOPES...SOUTHEAST WINDS 7-15 MPH WITH GUSTS TO  
AROUND 30 MPH.  
RIDGES/UPR SLOPES....SOUTHEAST WINDS 7-15 MPH WITH GUSTS TO  
AROUND 30 MPH.  
CWR.................0 PERCENT INCREASING TO 10 PERCENT IN THE  
AFTERNOON.  
15K FT MSL WINDS....SOUTHWEST 30-40 MPH.  
MIXING HEIGHT.......5000-6000 FT AGL.  
TRANSPORT WINDS.....SOUTH 10-15 MPH UNTIL 1200, THEN 20-25 MPH.  
SMOKE DISPERSAL.....POOR UNTIL 1100, THEN GOOD UNTIL 1300, THEN  
VERY GOOD UNTIL 1600, THEN FAIR.  
   
TUESDAY NIGHT
 
SNOW SHOWERS WITH RAIN SHOWERS LIKELY. LOWS IN  
THE LOWER 30S. SOUTHEAST WINDS 6-13 MPH.    
WEDNESDAY
 
MOSTLY CLOUDY. RAIN SHOWERS, CHANCE OF THUNDERSTORMS  
AND SNOW SHOWERS. HIGHS IN THE LOWER 50S. SOUTH WINDS 5-12 MPH.    
THURSDAY
 
PARTLY CLOUDY. SLIGHT CHANCE OF THUNDERSTORMS. LOWS  
IN THE LOWER 30S. HIGHS IN THE UPPER 50S. WEST WINDS 4-9 MPH.    
FRIDAY
 
PARTLY CLOUDY. SLIGHT CHANCE OF THUNDERSTORMS. LOWS IN  
THE LOWER 30S. HIGHS AROUND 60. WEST WINDS 4-8 MPH.  
 

 
 
COZ218-190015-  
SOUTH AND EAST JACKSON/LARIMER/NORTH AND NORTHEAST GRAND/  
NORTHWEST BOULDER COUNTIES ABOVE 9000 FEET-  
INCLUDING CAMERON PASS, LARAMIE AND MEDICINE BOW MOUNTAINS,  
RABBIT EARS RANGE, ROCKY MOUNTAIN NATIONAL PARK,  
AND WILLOW CREEK PASS  
423 AM MDT MON MAY 18 2026  
   
TODAY
 
 
SKY/WEATHER.........CLOUDY. SNOW SHOWERS. SLIGHT CHANCE OF  
THUNDERSTORMS AFTER 0900.  
CHANCE OF THUNDER...20 PERCENT.  
MAX TEMPERATURE.....28-38.  
24 HR TREND......15-20 DEGREES COOLER.  
MIN HUMIDITY........73-83%.  
24 HR TREND......35-50% WETTER.  
20-FOOT WINDS.......  
VALLEYS/LWR SLOPES...SOUTHEAST WINDS 9-16 MPH UNTIL 1200, THEN  
NORTHEAST 5-12 MPH. GUSTS UP TO 30 MPH.  
RIDGES/UPR SLOPES....EAST WINDS 9-17 MPH WITH GUSTS TO AROUND  
30 MPH.  
CWR.................70 PERCENT INCREASING TO 90 PERCENT IN THE  
AFTERNOON.  
15K FT MSL WINDS....SOUTHWEST 35-45 MPH.  
MIXING HEIGHT.......2500-3500 FT AGL.  
TRANSPORT WINDS.....SOUTHEAST 20-25 MPH UNTIL 1300, THEN SOUTH  
AROUND 15 MPH UNTIL 1500, THEN NORTHWEST UNTIL  
1700, THEN NORTH.  
SMOKE DISPERSAL.....POOR.  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLOUDY. SNOW SHOWERS LIKELY UNTIL 2400,  
THEN CHANCE OF SNOW SHOWERS UNTIL 0300, THEN  
SLIGHT CHANCE OF SNOW SHOWERS.  
CHANCE OF THUNDER...0 PERCENT.  
MIN TEMPERATURE.....15-25.  
24 HR TREND......7-10 DEGREES COOLER.  
MAX HUMIDITY........88-98%.  
24 HR TREND......LITTLE CHANGE.  
20-FOOT WINDS.......  
VALLEYS/LWR SLOPES...NORTH WINDS 4-7 MPH UNTIL 2400, THEN WEST  
4-6 MPH.  
RIDGES/UPR SLOPES....WEST WINDS 4-9 MPH.  
CWR.................30 PERCENT DECREASING TO 10 PERCENT AFTER  
MIDNIGHT.  
15K FT MSL WINDS....SOUTHWEST 25-35 MPH.  
MIXING HEIGHT.......1500-2500 FT AGL.  
TRANSPORT WINDS.....NORTHWEST 10-15 MPH UNTIL 2300, THEN WEST UNTIL  
0500, THEN LIGHT.  
SMOKE DISPERSAL.....POOR.  
   
TUESDAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY(60-65%). SLIGHT CHANCE OF SNOW  
SHOWERS AFTER 0900 UNTIL 1200, THEN CHANCE OF  
SNOW SHOWERS AND SLIGHT CHANCE OF  
THUNDERSTORMS.  
CHANCE OF THUNDER...20 PERCENT.  
MAX TEMPERATURE.....31-41.  
24 HR TREND......2-4 DEGREES WARMER.  
MIN HUMIDITY........58-68%.  
24 HR TREND......25-35% DRIER.  
20-FOOT WINDS.......  
VALLEYS/LWR SLOPES...SOUTHWEST WINDS 4-6 MPH UNTIL 1200, THEN  
NORTH 4-8 MPH.  
RIDGES/UPR SLOPES....SOUTHWEST WINDS 4-7 MPH UNTIL 1200, THEN  
NORTH 4-9 MPH WITH GUSTS TO AROUND 20 MPH.  
CWR.................0 PERCENT INCREASING TO 30 PERCENT IN THE  
AFTERNOON.  
15K FT MSL WINDS....SOUTHWEST 20-30 MPH.  
MIXING HEIGHT.......5000-6000 FT AGL.  
TRANSPORT WINDS.....LIGHT WINDS UNTIL 0700, THEN SOUTHWEST 10-15  
MPH UNTIL 1600, THEN NORTHWEST.  
SMOKE DISPERSAL.....POOR UNTIL 1200, THEN FAIR.  
   
TUESDAY NIGHT
 
MOSTLY CLOUDY. CHANCE OF SNOW SHOWERS. LOWS IN  
THE LOWER 20S. SOUTHEAST WINDS 4-6 MPH.    
WEDNESDAY
 
PARTLY CLOUDY. CHANCE OF THUNDERSTORMS AND SNOW  
SHOWERS. HIGHS IN THE LOWER 40S. WEST WINDS 4-7 MPH.    
THURSDAY
 
PARTLY CLOUDY. CHANCE OF THUNDERSTORMS AND SNOW  
SHOWERS. LOWS IN THE LOWER 20S. HIGHS IN THE UPPER 40S. WEST  
WINDS 4-9 MPH.    
FRIDAY
 
MOSTLY CLOUDY. CHANCE OF THUNDERSTORMS AND SLIGHT  
CHANCE OF SNOW SHOWERS. LOWS IN THE UPPER 20S. HIGHS AROUND 50.  
SOUTHWEST WINDS 4-9 MPH.  
 

 
 
COZ212-190015-  
SOUTH AND SOUTHEAST GRAND/WEST CENTRAL AND SOUTHWEST BOULDER/  
GILPIN/CLEAR CREEK/SUMMIT/NORTH AND WEST PARK COUNTIES ABOVE  
9000 FEET-  
INCLUDING BERTHOUD PASS, BRECKENRIDGE,  
EAST SLOPES MOSQUITO RANGE, EAST SLOPES SOUTHERN GORE RANGE,  
EISENHOWER TUNNEL, INDIAN PEAKS, KENOSHA MOUNTAINS,  
MOUNT BLUE SKY, PUMA HILLS, TARRYALL MOUNTAINS,  
WILLIAMS FORK MOUNTAINS, AND WINTER PARK  
423 AM MDT MON MAY 18 2026  
   
TODAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY. SLIGHT CHANCE OF THUNDERSTORMS  
UNTIL 1200. SNOW SHOWERS. CHANCE OF  
THUNDERSTORMS AFTER 1200.  
CHANCE OF THUNDER...30 PERCENT.  
MAX TEMPERATURE.....32-42.  
24 HR TREND......15-20 DEGREES COOLER.  
MIN HUMIDITY........57-67%.  
24 HR TREND......20-25% WETTER.  
20-FOOT WINDS.......  
VALLEYS/LWR SLOPES...SOUTHEAST WINDS 12-18 MPH WITH GUSTS TO  
AROUND 40 MPH UNTIL 1200, THEN WEST 6-13  
MPH WITH GUSTS TO AROUND 30 MPH.  
RIDGES/UPR SLOPES....BREEZY. SOUTH WINDS 18-28 MPH WITH GUSTS  
TO AROUND 45 MPH UNTIL 1200, THEN  
SOUTHWEST 10-17 MPH WITH GUSTS TO AROUND  
35 MPH.  
CWR.................60 PERCENT DECREASING TO 50 PERCENT IN THE  
AFTERNOON.  
15K FT MSL WINDS....SOUTHWEST 30-40 MPH.  
MIXING HEIGHT.......6000-7000 FT AGL.  
TRANSPORT WINDS.....SOUTHEAST 20-25 MPH UNTIL 0900, THEN SOUTH  
25-30 MPH UNTIL 1300, THEN WEST AROUND 20 MPH.  
SMOKE DISPERSAL.....POOR UNTIL 0900, THEN GOOD.  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLOUDY(50-60%). CHANCE OF SNOW SHOWERS  
UNTIL 0300, THEN SLIGHT CHANCE OF SNOW SHOWERS.  
CHANCE OF THUNDER...0 PERCENT.  
MIN TEMPERATURE.....18-28.  
24 HR TREND......10-15 DEGREES COOLER.  
MAX HUMIDITY........82-92%.  
24 HR TREND......LITTLE CHANGE.  
20-FOOT WINDS.......  
VALLEYS/LWR SLOPES...WEST WINDS 4-9 MPH. GUSTS UP TO 25 MPH IN  
THE EVENING.  
RIDGES/UPR SLOPES....WEST WINDS 4-12 MPH. GUSTS UP TO 30 MPH IN  
THE EVENING.  
CWR.................10 PERCENT.  
15K FT MSL WINDS....SOUTHWEST 25-35 MPH.  
MIXING HEIGHT.......1500-2500 FT AGL.  
TRANSPORT WINDS.....WEST 10-15 MPH.  
SMOKE DISPERSAL.....POOR.  
   
TUESDAY
 
 
SKY/WEATHER.........PARTLY CLOUDY(50-60%) UNTIL 0900, THEN MOSTLY  
CLOUDY(50-60%). SNOW SHOWERS LIKELY AND SLIGHT  
CHANCE OF THUNDERSTORMS AFTER 1200. CHANCE OF  
RAIN SHOWERS AFTER 1500.  
CHANCE OF THUNDER...20 PERCENT.  
MAX TEMPERATURE.....34-44.  
24 HR TREND......2-4 DEGREES WARMER.  
MIN HUMIDITY........54-64%.  
24 HR TREND......15-20% WETTER.  
20-FOOT WINDS.......  
VALLEYS/LWR SLOPES...SOUTH WINDS 5-13 MPH WITH GUSTS TO AROUND  
25 MPH.  
RIDGES/UPR SLOPES....SOUTH WINDS 6-14 MPH WITH GUSTS TO AROUND  
30 MPH.  
CWR.................0 PERCENT INCREASING TO 40 PERCENT IN THE  
AFTERNOON.  
15K FT MSL WINDS....SOUTHWEST 25-35 MPH.  
MIXING HEIGHT.......7000-8000 FT AGL.  
TRANSPORT WINDS.....SOUTHWEST 10-15 MPH UNTIL 1300, THEN SOUTH  
15-20 MPH.  
SMOKE DISPERSAL.....POOR UNTIL 1100, THEN GOOD UNTIL 1700, THEN  
FAIR.  
   
TUESDAY NIGHT
 
SNOW SHOWERS. LOWS IN THE UPPER 20S. SOUTHEAST  
WINDS 4-8 MPH.    
WEDNESDAY
 
MOSTLY CLOUDY. CHANCE OF SNOW SHOWERS AND  
THUNDERSTORMS. HIGHS IN THE MID 40S. WEST WINDS 4-9 MPH.    
THURSDAY
 
PARTLY CLOUDY. CHANCE OF SNOW SHOWERS, RAIN SHOWERS  
AND SLIGHT CHANCE OF THUNDERSTORMS. LOWS IN THE MID 20S. HIGHS IN  
THE UPPER 40S. WEST WINDS 5-12 MPH.    
FRIDAY
 
PARTLY CLOUDY. CHANCE OF THUNDERSTORMS AND SLIGHT  
CHANCE OF SNOW SHOWERS. LOWS IN THE UPPER 20S. HIGHS IN THE LOWER  
50S. WEST WINDS 5-12 MPH.  
 

 
 
COZ217-190015-  
WEST JACKSON AND WEST GRAND COUNTIES ABOVE 9000 FEET-  
INCLUDING EAST SLOPES PARK AND NORTHERN GORE RANGES, GORE PASS,  
AND RABBIT EARS PASS  
423 AM MDT MON MAY 18 2026  
   
TODAY
 
 
SKY/WEATHER.........CLOUDY. SLIGHT CHANCE OF THUNDERSTORMS UNTIL  
1500. SNOW SHOWERS. CHANCE OF THUNDERSTORMS  
AFTER 1500.  
CHANCE OF THUNDER...30 PERCENT.  
MAX TEMPERATURE.....31-41.  
24 HR TREND......10-15 DEGREES COOLER.  
MIN HUMIDITY........72-82%.  
24 HR TREND......35-50% WETTER.  
20-FOOT WINDS.......  
VALLEYS/LWR SLOPES...SOUTHEAST WINDS 8-15 MPH UNTIL 1200, THEN  
NORTH 7-14 MPH. GUSTS UP TO 25 MPH.  
RIDGES/UPR SLOPES....SOUTHEAST WINDS 12-18 MPH UNTIL 1200, THEN  
NORTH 8-15 MPH. GUSTS UP TO 30 MPH.  
CWR.................80 PERCENT.  
15K FT MSL WINDS....SOUTHWEST 25-35 MPH.  
MIXING HEIGHT.......BELOW 1000 FT AGL UNTIL 0800, THEN 4000-5000 FT  
AGL.  
TRANSPORT WINDS.....SOUTHEAST 15-20 MPH UNTIL 1300, THEN WEST UNTIL  
1400, THEN NORTH.  
SMOKE DISPERSAL.....POOR.  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLOUDY. SNOW SHOWERS LIKELY UNTIL 2100,  
THEN CHANCE OF SNOW SHOWERS UNTIL 0300, THEN  
SLIGHT CHANCE OF SNOW SHOWERS.  
CHANCE OF THUNDER...0 PERCENT.  
MIN TEMPERATURE.....16-24.  
24 HR TREND......7-10 DEGREES COOLER.  
MAX HUMIDITY........90-100%.  
24 HR TREND......LITTLE CHANGE.  
20-FOOT WINDS.......  
VALLEYS/LWR SLOPES...NORTHWEST WINDS 4-12 MPH. GUSTS UP TO 25  
MPH IN THE EVENING.  
RIDGES/UPR SLOPES....NORTHWEST WINDS 4-12 MPH. GUSTS UP TO 25  
MPH IN THE EVENING.  
CWR.................10 PERCENT.  
15K FT MSL WINDS....SOUTHWEST 20-30 MPH.  
MIXING HEIGHT.......1500-2500 FT AGL.  
TRANSPORT WINDS.....NORTH 10-15 MPH UNTIL 0100, THEN WEST UNTIL  
0200, THEN LIGHT.  
SMOKE DISPERSAL.....POOR.  
   
TUESDAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY(55-60%) UNTIL 0900, THEN PARTLY  
CLOUDY(40-50%) UNTIL 1200, THEN MOSTLY  
CLOUDY(55-60%). CHANCE OF SNOW SHOWERS AND  
SLIGHT CHANCE OF THUNDERSTORMS AFTER 1200.  
CHANCE OF THUNDER...20 PERCENT.  
MAX TEMPERATURE.....36-46.  
24 HR TREND......4-7 DEGREES WARMER.  
MIN HUMIDITY........52-62%.  
24 HR TREND......20-25% DRIER.  
20-FOOT WINDS.......  
VALLEYS/LWR SLOPES...NORTHEAST WINDS 4-6 MPH UNTIL 1200, THEN  
NORTHWEST 4-9 MPH WITH GUSTS TO AROUND 25  
MPH.  
RIDGES/UPR SLOPES....SOUTHEAST WINDS 4-9 MPH UNTIL 1200, THEN  
WEST 7-14 MPH WITH GUSTS TO AROUND 25 MPH.  
CWR.................0 PERCENT INCREASING TO 10 PERCENT IN THE  
AFTERNOON.  
15K FT MSL WINDS....SOUTHWEST 20-30 MPH.  
MIXING HEIGHT.......5500-6500 FT AGL.  
TRANSPORT WINDS.....LIGHT WINDS UNTIL 1000, THEN WEST 10-15 MPH.  
SMOKE DISPERSAL.....POOR UNTIL 1300, THEN GOOD.  
   
TUESDAY NIGHT
 
PARTLY CLOUDY. LOWS IN THE LOWER 20S. NORTHEAST  
WINDS 4-7 MPH.    
WEDNESDAY
 
PARTLY CLOUDY. SLIGHT CHANCE OF THUNDERSTORMS AND  
SNOW SHOWERS. HIGHS IN THE UPPER 40S. WEST WINDS 5-12 MPH.    
THURSDAY
 
PARTLY CLOUDY. CHANCE OF THUNDERSTORMS AND SNOW  
SHOWERS. LOWS IN THE MID 20S. HIGHS AROUND 50. SOUTHWEST WINDS  
6-13 MPH.    
FRIDAY
 
PARTLY CLOUDY. SLIGHT CHANCE OF THUNDERSTORMS. LOWS IN  
THE UPPER 20S. HIGHS IN THE LOWER 50S. SOUTHWEST WINDS 6-13 MPH.  
 

 
   
OUTLOOK 6 TO 10 DAYS
 
 
TEMPERATURES ABOVE NORMAL AND PRECIPITATION ABOVE NORMAL.  
 

 
 
CLICK HERE TO GO TO PREVIOUS BULLETINS.

The Nexlab CO Page Main Text Page