978
FNUS56 KOTX 232133
FWFOTX
FIRE WEATHER PLANNING FORECAST FOR EASTERN WASHINGTON AND NORTH IDAHO
NATIONAL WEATHER SERVICE SPOKANE WA
233 PM PDT SAT MAY 23 2026
DISCUSSION
...DRY AND BREEZY CASCADE GAPS INTO WESTERN COLUMBIA BASIN
SATURDAY AFTERNOON AND EVENING...
THIS WEEKEND WILL BE DRY AND BREEZY WITH ELEVATED FIRE WEATHER
CONDITIONS, ESPECIALLY EAST OF THE CASCADES INTO THE WESTERN
COLUMBIA BASIN. A STRONGER WEATHER SYSTEM ARRIVES MONDAY WITH
GUSTY WINDS DURING THE DAY WITH A TREND TOWARD COOLER AND WETTER
WEATHER. WARM AND MOIST WITH WIDELY SCATTERED SHOWERS AND
THUNDERSTORMS THURSDAY AND FRIDAY NEXT WEEK.
***************************************************************
FORECASTS FOR 20 FOOT WIND SPEEDS (VALLEYS AND RIDGE TOPS) ARE
10 MINUTE AVERAGES REFLECTING RAWS WIND.
***VENTILATION INDEX IS DERIVED FROM TRANSPORT WIND
MULTIPLIED BY THE MIXING HEIGHT DIVIDED BY 100.
CATEGORIES: LOW (< 200), MODERATE (200-500),
HIGH (500-800), AND VERY HIGH (> 800).
***************************************************************
WAZ696-698-241330-
EAST WASHINGTON CENTRAL CASCADES (ZONE 696)-
EAST WASHINGTON NORTH CASCADES (ZONE 698)-
INCLUDING THE CITIES OF STEVENS PASS, LAKE WENATCHEE AREA,
AND LEAVENWORTH
233 PM PDT SAT MAY 23 2026
TONIGHT
* SKY/WEATHER.........PARTLY CLOUDY.
* CHANCE OF LIGHTNING...0 PERCENT.
* MIN TEMPERATURE.....46-55 VALLEYS AND 40-50 MOUNTAINS.
* 24 HR TREND........4 DEGREES COOLER.
* MAX HUMIDITY........50-65 PERCENT.
* 24 HR TREND........UNCHANGED VALLEYS, AND 20 PERCENT DRIER
MOUNTAINS.
* HUMIDITY RECOVERY...FAIR.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...NORTHWEST 9 TO 20 MPH. GUSTS UP TO 40 MPH IN
THE EVENING DECREASING TO 30 MPH OVERNIGHT.
* RIDGES/UPR SLOPES....WEST 9 TO 20 MPH. GUSTS UP TO 40 MPH IN THE
EVENING DECREASING TO 30 MPH OVERNIGHT.
* MIXING HEIGHT.......3000 FT AGL FALLING TO NEAR SURFACE.
* TRANSPORT WINDS.....WEST 10 TO 20 MPH.
* CWR (> 0.10 IN).....0 PERCENT.
* VENTILATION INDEX...HIGH (590) IN THE EVENING DECREASING TO LOW
(86) OVERNIGHT.
SUNDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* CHANCE OF LIGHTNING...0 PERCENT.
* MAX TEMPERATURE.....68-78 VALLEYS AND 55-65 MOUNTAINS.
* 24 HR TREND........5 DEGREES COOLER VALLEYS, AND 1 DEGREE WARMER
MOUNTAINS.
* MIN HUMIDITY........25-35 PERCENT VALLEYS AND 35-50 PERCENT
MOUNTAINS.
* 24 HR TREND........3 PERCENT WETTER VALLEYS, AND 10 PERCENT DRIER
MOUNTAINS.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...WEST 3 TO 13 MPH WITH GUSTS TO AROUND
25 MPH.
* RIDGES/UPR SLOPES....WEST 5 TO 14 MPH WITH GUSTS TO AROUND
30 MPH.
* MIXING HEIGHT.......5500 FT AGL.
* TRANSPORT WINDS.....WEST 10 TO 20 MPH.
* CWR (> 0.10 IN).....0 PERCENT.
* VENTILATION INDEX...MODERATE (395) IN THE MORNING INCREASING TO
VERY HIGH (885) IN THE AFTERNOON.
SUNDAY NIGHT
* SKY/WEATHER.........INCREASING CLOUDS.
* CHANCE OF LIGHTNING...0 PERCENT.
* MIN TEMPERATURE.....47-56 VALLEYS AND 41-51 MOUNTAINS.
* MAX HUMIDITY........45-60 PERCENT VALLEYS AND 55-70 PERCENT
MOUNTAINS.
* HUMIDITY RECOVERY...FAIR.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...WEST 3 TO 13 MPH. GUSTS UP TO 25 MPH
IN THE EVENING.
* RIDGES/UPR SLOPES....WEST 5 TO 14 MPH. GUSTS UP TO 30 MPH
IN THE EVENING.
* MIXING HEIGHT.......4500 FT AGL FALLING TO NEAR SURFACE.
* TRANSPORT WINDS.....WEST 5 TO 15 MPH.
* CWR (> 0.10 IN).....0 PERCENT.
* VENTILATION INDEX...HIGH (720) IN THE EVENING DECREASING TO LOW
(71) OVERNIGHT.
MEMORIAL DAY
* SKY/WEATHER.........MOSTLY CLOUDY. A CHANCE OF HIGH MOUNTAIN SNOW
SHOWERS EARLY IN THE MORNING. A CHANCE OF RAIN SHOWERS THROUGH
THE DAY.
* CHANCE OF LIGHTNING...0 PERCENT.
* MAX TEMPERATURE.....63-73 VALLEYS AND 51-61 MOUNTAINS.
* MIN HUMIDITY........35-50 PERCENT VALLEYS AND 50-65 PERCENT
MOUNTAINS.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...WEST UP TO 6 MPH IN THE MORNING SHIFTING TO
THE SOUTH 6 TO 17 MPH WITH GUSTS TO AROUND 40 MPH IN THE
AFTERNOON.
* RIDGES/UPR SLOPES....SOUTHWEST 6 TO 17 MPH WITH GUSTS TO AROUND
35 MPH.
* MIXING HEIGHT.......7000 FT AGL.
* TRANSPORT WINDS.....SOUTHWEST 10 TO 20 MPH.
* CWR (> 0.10 IN).....20 PERCENT.
* VENTILATION INDEX...VERY HIGH (991) IN THE MORNING INCREASING TO
VERY HIGH (1731) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
TUESDAY
MOSTLY CLOUDY. A CHANCE OF RAIN AND HIGH MOUNTAIN SNOW
SHOWERS. LOWS 40 TO 49 VALLEYS...33 TO 43 MOUNTAINS. HIGHS 57 TO
67 VALLEYS...45 TO 55 MOUNTAINS. NORTHWEST WIND UP TO 10 MPH.
WEDNESDAY...WARMER. PARTLY CLOUDY. LOWS 41 TO 50 VALLEYS
34 TO
44 MOUNTAINS. HIGHS 69 TO 79 VALLEYS...58 TO 68 MOUNTAINS.
NORTHWEST WIND 5 TO 15 MPH.
THURSDAY
PARTLY CLOUDY. A CHANCE OF RAIN SHOWERS. LOWS 43 TO
53. HIGHS 74 TO 84 VALLEYS...63 TO 73 MOUNTAINS. NORTHWEST WIND
UP TO 10 MPH.
FRIDAY
MOSTLY CLOUDY. A CHANCE OF RAIN SHOWERS. LOWS 45 TO 55.
HIGHS 65 TO 75 VALLEYS...55 TO 65 MOUNTAINS.
SATURDAY
PARTLY CLOUDY. A CHANCE OF RAIN SHOWERS. LOWS 43 TO
52 VALLEYS...37 TO 47 MOUNTAINS. HIGHS 63 TO 73 VALLEYS...52 TO
62 MOUNTAINS.
.8 TO 14 DAY OUTLOOK FOR MAY 31 - JUN 06, 2026
ABOVE NORMAL TEMPERATURES AND NEAR NORMAL PRECIPITATION.
WAZ697-241330-
EAST PORTION OF NORTH CASCADES NATIONAL PARK/LAKE CHELAN NATIONAL
RECREATION AREA (ZONE 697)-
INCLUDING THE CITY OF STEHEKIN
233 PM PDT SAT MAY 23 2026
TONIGHT
* SKY/WEATHER.........PARTLY CLOUDY.
* CHANCE OF LIGHTNING...0 PERCENT.
* MIN TEMPERATURE.....45-55 VALLEYS AND 38-48 MOUNTAINS.
* 24 HR TREND........3 DEGREES WARMER.
* MAX HUMIDITY........55-65 PERCENT VALLEYS AND 61-80 PERCENT
MOUNTAINS.
* 24 HR TREND........UNCHANGED VALLEYS, AND 10 PERCENT DRIER
MOUNTAINS.
* HUMIDITY RECOVERY...GOOD.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...WEST 7 TO 18 MPH. GUSTS UP TO 30 MPH IN THE
EVENING.
* RIDGES/UPR SLOPES....WEST 8 TO 18 MPH. GUSTS UP TO 35 MPH
IN THE EVENING.
* MIXING HEIGHT.......2500 FT AGL FALLING TO NEAR SURFACE.
* TRANSPORT WINDS.....WEST 10 TO 20 MPH.
* CWR (> 0.10 IN).....0 PERCENT.
* VENTILATION INDEX...MODERATE (442) IN THE EVENING DECREASING TO
LOW (66) OVERNIGHT.
SUNDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* CHANCE OF LIGHTNING...0 PERCENT.
* MAX TEMPERATURE.....65-75 VALLEYS AND 52-62 MOUNTAINS.
* 24 HR TREND........7 DEGREES COOLER.
* MIN HUMIDITY........40-55 PERCENT.
* 24 HR TREND........UNCHANGED VALLEYS, AND 5 PERCENT WETTER
MOUNTAINS.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...WEST 4 TO 13 MPH WITH GUSTS TO AROUND 20
MPH.
* RIDGES/UPR SLOPES....WEST 4 TO 14 MPH WITH GUSTS TO AROUND 25
MPH.
* MIXING HEIGHT.......4500 FT AGL.
* TRANSPORT WINDS.....WEST 10 TO 15 MPH.
* CWR (> 0.10 IN).....0 PERCENT.
* VENTILATION INDEX...MODERATE (302) IN THE MORNING INCREASING TO
HIGH (622) IN THE AFTERNOON.
SUNDAY NIGHT
* SKY/WEATHER.........INCREASING CLOUDS. A CHANCE OF RAIN SHOWERS
EARLY IN THE MORNING.
* CHANCE OF LIGHTNING...0 PERCENT.
* MIN TEMPERATURE.....47-57 VALLEYS AND 39-49 MOUNTAINS.
* MAX HUMIDITY........50-65 PERCENT VALLEYS AND 60-75 PERCENT
MOUNTAINS.
* HUMIDITY RECOVERY...FAIR.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...SOUTHWEST 3 TO 13 MPH. GUSTS UP TO 20 MPH IN
THE EVENING.
* RIDGES/UPR SLOPES....SOUTHWEST 3 TO 13 MPH. GUSTS UP TO 25 MPH IN
THE EVENING.
* MIXING HEIGHT.......4000 FT AGL FALLING TO NEAR SURFACE.
* TRANSPORT WINDS.....SOUTHWEST 5 TO 15 MPH.
* CWR (> 0.10 IN).....0 PERCENT.
* VENTILATION INDEX...HIGH (501) IN THE EVENING DECREASING TO LOW
(48) OVERNIGHT.
MEMORIAL DAY
* SKY/WEATHER.........MOSTLY CLOUDY. A CHANCE OF HIGH MOUNTAIN
SNOW SHOWERS. RAIN SHOWERS THROUGH THE DAY.
* CHANCE OF LIGHTNING...0 PERCENT.
* MAX TEMPERATURE.....60-70 VALLEYS AND 48-58 MOUNTAINS.
* MIN HUMIDITY........55-70 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...SOUTHWEST 3 TO 10 MPH.
* RIDGES/UPR SLOPES....SOUTHWEST 3 TO 11 MPH.
* MIXING HEIGHT.......4000 FT AGL.
* TRANSPORT WINDS.....SOUTHWEST 10 TO 15 MPH.
* CWR (> 0.10 IN).....50 PERCENT.
* VENTILATION INDEX...HIGH (557) IN THE MORNING INCREASING TO HIGH
(677) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
TUESDAY
MOSTLY CLOUDY. A CHANCE OF VALLEY RAIN AND MOUNTAIN
SNOW SHOWERS. LOWS 41 TO 49 VALLEYS...31 TO 41 MOUNTAINS. HIGHS
56 TO 66 VALLEYS...43 TO 53 MOUNTAINS. NORTHWEST WIND 5 TO
10 MPH.
WEDNESDAY...WARMER. PARTLY CLOUDY. LOWS 39 TO 49 VALLEYS
34 TO
44 MOUNTAINS. HIGHS 69 TO 79 VALLEYS...59 TO 69 MOUNTAINS.
NORTHWEST WIND 5 TO 10 MPH.
THURSDAY
PARTLY CLOUDY. A CHANCE OF RAIN SHOWERS. LOWS 46 TO
56 VALLEYS...41 TO 51 MOUNTAINS. HIGHS 73 TO 83 VALLEYS...63 TO
73 MOUNTAINS. NORTHWEST WIND UP TO 10 MPH.
FRIDAY
PARTLY CLOUDY. A CHANCE OF RAIN SHOWERS. LOWS 48 TO
58 VALLEYS...43 TO 53 MOUNTAINS. HIGHS 64 TO 74 VALLEYS...53 TO
63 MOUNTAINS.
SATURDAY...PARTLY CLOUDY. LOWS 43 TO 53 VALLEYS
36 TO
46 MOUNTAINS. HIGHS 62 TO 72 VALLEYS...51 TO 61 MOUNTAINS.
.8 TO 14 DAY OUTLOOK FOR MAY 31 - JUN 06, 2026
ABOVE NORMAL TEMPERATURES AND NEAR NORMAL PRECIPITATION.
WAZ704-241330-
METHOW VALLEY (ZONE 704)-
INCLUDING THE CITIES OF MAZAMA, WINTHROP, AND TWISP
233 PM PDT SAT MAY 23 2026
TONIGHT
* SKY/WEATHER.........PARTLY CLOUDY.
* CHANCE OF LIGHTNING...0 PERCENT.
* MIN TEMPERATURE.....46-56.
* 24 HR TREND........3 DEGREES COOLER.
* MAX HUMIDITY........50-65 PERCENT.
* 24 HR TREND........10 PERCENT DRIER.
* HUMIDITY RECOVERY...FAIR.
* 20-FOOT WINDS.......NORTHWEST 5 TO 16 MPH WITH GUSTS TO AROUND 30
MPH.
* MIXING HEIGHT.......4000 FT AGL FALLING TO NEAR SURFACE.
* TRANSPORT WINDS.....NORTHWEST 10 TO 20 MPH.
* CWR (> 0.10 IN).....0 PERCENT.
* VENTILATION INDEX...HIGH (701) IN THE EVENING DECREASING TO LOW
(71) OVERNIGHT.
SUNDAY
* SKY/WEATHER.........PARTLY SUNNY.
* CHANCE OF LIGHTNING...0 PERCENT.
* MAX TEMPERATURE.....71-81.
* 24 HR TREND........4 DEGREES COOLER.
* MIN HUMIDITY........21-28 PERCENT.
* 24 HR TREND........3 PERCENT WETTER.
* 20-FOOT WINDS.......NORTHWEST 3 TO 11 MPH.
* MIXING HEIGHT.......7000 FT AGL.
* TRANSPORT WINDS.....WEST 5 TO 15 MPH.
* CWR (> 0.10 IN).....0 PERCENT.
* VENTILATION INDEX...MODERATE (342) IN THE MORNING INCREASING TO
VERY HIGH (904) IN THE AFTERNOON.
SUNDAY NIGHT
* SKY/WEATHER.........INCREASING CLOUDS.
* CHANCE OF LIGHTNING...0 PERCENT.
* MIN TEMPERATURE.....47-57.
* MAX HUMIDITY........45-60 PERCENT.
* HUMIDITY RECOVERY...POOR.
* 20-FOOT WINDS.......WEST 3 TO 13 MPH. GUSTS UP TO 25 MPH IN THE
EVENING.
* MIXING HEIGHT.......5500 FT AGL FALLING TO NEAR SURFACE.
* TRANSPORT WINDS.....WEST 5 TO 15 MPH.
* CWR (> 0.10 IN).....0 PERCENT.
* VENTILATION INDEX...HIGH (688) IN THE EVENING DECREASING TO LOW
(42) OVERNIGHT.
MEMORIAL DAY
* SKY/WEATHER.........MOSTLY CLOUDY. A CHANCE OF RAIN SHOWERS EARLY
IN THE MORNING. A CHANCE OF RAIN SHOWERS IN THE LATE MORNING AND
AFTERNOON.
* CHANCE OF LIGHTNING...0 PERCENT.
* MAX TEMPERATURE.....66-76.
* MIN HUMIDITY........28-40 PERCENT.
* 20-FOOT WINDS.......WEST UP TO 3 MPH IN THE MORNING INCREASING TO
SOUTH 7 TO 18 MPH WITH GUSTS TO AROUND 35 MPH IN THE AFTERNOON.
* MIXING HEIGHT.......8500 FT AGL.
* TRANSPORT WINDS.....SOUTHWEST 10 TO 20 MPH.
* CWR (> 0.10 IN).....10 PERCENT.
* VENTILATION INDEX...HIGH (650) IN THE MORNING INCREASING TO VERY
HIGH (1871) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
TUESDAY
MOSTLY CLOUDY. A CHANCE OF RAIN SHOWERS. LOWS 39 TO
48. HIGHS 60 TO 69. NORTHWEST WIND UP TO 5 MPH.
WEDNESDAY
WARMER. PARTLY CLOUDY. LOWS 41 TO 50. HIGHS 73 TO
82. NORTHWEST WIND UP TO 10 MPH.
THURSDAY
PARTLY CLOUDY. A CHANCE OF SHOWERS AND THUNDERSTORMS.
LOWS 48 TO 57. HIGHS 76 TO 86. WEST WIND UP TO 5 MPH.
FRIDAY
MOSTLY CLOUDY. A CHANCE OF RAIN SHOWERS. LOWS 51 TO 59.
HIGHS 70 TO 78.
SATURDAY
PARTLY CLOUDY. LOWS 45 TO 53. HIGHS 68 TO 76.
.8 TO 14 DAY OUTLOOK FOR MAY 31 - JUN 06, 2026
ABOVE NORMAL TEMPERATURES AND NEAR NORMAL PRECIPITATION.
WAZ703-241330-
OKANOGAN VALLEY (ZONE 703)-
INCLUDING THE CITIES OF CONCONULLY AND OMAK
233 PM PDT SAT MAY 23 2026
TONIGHT
* SKY/WEATHER.........PARTLY CLOUDY.
* CHANCE OF LIGHTNING...0 PERCENT.
* MIN TEMPERATURE.....51-56.
* 24 HR TREND........3 DEGREES COOLER.
* MAX HUMIDITY........45-55 PERCENT.
* 24 HR TREND........UNCHANGED.
* HUMIDITY RECOVERY...POOR.
* 20-FOOT WINDS.......NORTHWEST 6 TO 17 MPH. GUSTS UP TO 35 MPH IN
THE EVENING DECREASING TO 25 MPH OVERNIGHT.
* MIXING HEIGHT.......6000 FT AGL FALLING TO NEAR SURFACE.
* TRANSPORT WINDS.....NORTHWEST 10 TO 20 MPH.
* CWR (> 0.10 IN).....0 PERCENT.
* VENTILATION INDEX...VERY HIGH (886) IN THE EVENING DECREASING TO
LOW (63) OVERNIGHT.
SUNDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* CHANCE OF LIGHTNING...0 PERCENT.
* MAX TEMPERATURE.....73-83.
* 24 HR TREND........5 DEGREES COOLER.
* MIN HUMIDITY........21-26 PERCENT.
* 24 HR TREND........4 PERCENT WETTER.
* 20-FOOT WINDS.......SOUTHWEST 4 TO 15 MPH. GUSTS UP TO 30 MPH IN
THE AFTERNOON.
* MIXING HEIGHT.......7500 FT AGL.
* TRANSPORT WINDS.....SOUTHWEST 10 TO 20 MPH.
* CWR (> 0.10 IN).....0 PERCENT.
* VENTILATION INDEX...HIGH (514) IN THE MORNING INCREASING TO VERY
HIGH (1140) IN THE AFTERNOON.
SUNDAY NIGHT
* SKY/WEATHER.........INCREASING CLOUDS.
* CHANCE OF LIGHTNING...0 PERCENT.
* MIN TEMPERATURE.....52-57.
* MAX HUMIDITY........45-50 PERCENT.
* HUMIDITY RECOVERY...POOR.
* 20-FOOT WINDS.......SOUTHWEST 5 TO 16 MPH. GUSTS UP TO 30 MPH IN
THE EVENING.
* MIXING HEIGHT.......6000 FT AGL FALLING TO NEAR SURFACE.
* TRANSPORT WINDS.....SOUTHWEST 10 TO 20 MPH.
* CWR (> 0.10 IN).....0 PERCENT.
* VENTILATION INDEX...VERY HIGH (943) IN THE EVENING DECREASING TO
LOW (37) OVERNIGHT.
MEMORIAL DAY
* SKY/WEATHER.........PARTLY SUNNY. A CHANCE OF RAIN SHOWERS IN THE
AFTERNOON.
* CHANCE OF LIGHTNING...0 PERCENT.
* MAX TEMPERATURE.....69-79.
* MIN HUMIDITY........25-35 PERCENT.
* 20-FOOT WINDS.......SOUTH 3 TO 10 MPH IN THE MORNING INCREASING
TO 11 TO 22 MPH WITH GUSTS TO AROUND 45 MPH IN THE AFTERNOON.
* MIXING HEIGHT.......9000 FT AGL.
* TRANSPORT WINDS.....SOUTH 10 TO 20 MPH.
* CWR (> 0.10 IN).....0 PERCENT.
* VENTILATION INDEX...VERY HIGH (1068) IN THE MORNING INCREASING TO
VERY HIGH (2171) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
TUESDAY
MOSTLY CLOUDY. A CHANCE OF RAIN SHOWERS. LOWS 45 TO
50. HIGHS 61 TO 70. NORTHWEST WIND UP TO 10 MPH.
WEDNESDAY
WARMER. PARTLY CLOUDY. LOWS 45 TO 50. HIGHS 72 TO
81. NORTH WIND 10 TO 20 MPH.
THURSDAY
PARTLY CLOUDY. A CHANCE OF SHOWERS AND THUNDERSTORMS.
LOWS 51 TO 57. HIGHS 77 TO 86. NORTHWEST WIND 5 TO 10 MPH.
FRIDAY
MOSTLY CLOUDY. A CHANCE OF SHOWERS AND THUNDERSTORMS.
LOWS 54 TO 59. HIGHS 71 TO 80.
SATURDAY
PARTLY CLOUDY. A CHANCE OF RAIN SHOWERS. LOWS 49 TO
54. HIGHS 70 TO 79.
.8 TO 14 DAY OUTLOOK FOR MAY 31 - JUN 06, 2026
ABOVE NORMAL TEMPERATURES AND NEAR NORMAL PRECIPITATION.
WAZ702-241330-
COLVILLE RESERVATION (ZONE 702)-
INCLUDING THE CITIES OF NESPELEM AND KELLER
233 PM PDT SAT MAY 23 2026
TONIGHT
* SKY/WEATHER.........PARTLY CLOUDY.
* CHANCE OF LIGHTNING...0 PERCENT.
* MIN TEMPERATURE.....49-54.
* 24 HR TREND........2 DEGREES COOLER.
* MAX HUMIDITY........45-60 PERCENT.
* 24 HR TREND........5 PERCENT WETTER VALLEYS, AND UNCHANGED
MOUNTAINS.
* HUMIDITY RECOVERY...POOR.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...WEST 3 TO 12 MPH. GUSTS UP TO 25 MPH IN THE
EVENING.
* RIDGES/UPR SLOPES....WEST 3 TO 12 MPH. GUSTS UP TO 25 MPH IN THE
EVENING.
* MIXING HEIGHT.......7500 FT AGL FALLING TO NEAR SURFACE.
* TRANSPORT WINDS.....WEST 5 TO 15 MPH.
* CWR (> 0.10 IN).....0 PERCENT.
* VENTILATION INDEX...VERY HIGH (1021) IN THE EVENING DECREASING TO
LOW (43) OVERNIGHT.
SUNDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* CHANCE OF LIGHTNING...0 PERCENT.
* MAX TEMPERATURE.....72-82 VALLEYS AND 65-74 MOUNTAINS.
* 24 HR TREND........4 DEGREES COOLER.
* MIN HUMIDITY........21-30 PERCENT.
* 24 HR TREND........5 PERCENT WETTER.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...SOUTHWEST 3 TO 13 MPH. GUSTS UP TO 20 MPH IN
THE MORNING INCREASING TO 30 MPH IN THE AFTERNOON.
* RIDGES/UPR SLOPES....SOUTHWEST 3 TO 13 MPH. GUSTS UP TO 30 MPH IN
THE AFTERNOON.
* MIXING HEIGHT.......7000 FT AGL.
* TRANSPORT WINDS.....SOUTHWEST 10 TO 20 MPH.
* CWR (> 0.10 IN).....0 PERCENT.
* VENTILATION INDEX...HIGH (689) IN THE MORNING INCREASING TO VERY
HIGH (1143) IN THE AFTERNOON.
SUNDAY NIGHT
* SKY/WEATHER.........PARTLY CLOUDY.
* CHANCE OF LIGHTNING...0 PERCENT.
* MIN TEMPERATURE.....50-54.
* MAX HUMIDITY........40-50 PERCENT.
* HUMIDITY RECOVERY...POOR.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...SOUTH 3 TO 13 MPH. GUSTS UP TO 30 MPH IN THE
EVENING.
* RIDGES/UPR SLOPES....SOUTHWEST 6 TO 16 MPH WITH GUSTS TO AROUND
30 MPH IN THE EVENING SHIFTING TO THE SOUTH 3 TO 6 MPH
OVERNIGHT.
* MIXING HEIGHT.......6000 FT AGL FALLING TO NEAR SURFACE.
* TRANSPORT WINDS.....SOUTH 5 TO 15 MPH.
* CWR (> 0.10 IN).....0 PERCENT.
* VENTILATION INDEX...VERY HIGH (939) IN THE EVENING DECREASING TO
LOW (43) OVERNIGHT.
MEMORIAL DAY
* SKY/WEATHER.........PARTLY SUNNY. RAIN SHOWERS LIKELY LATE IN
THE AFTERNOON.
* CHANCE OF LIGHTNING...0 PERCENT.
* MAX TEMPERATURE.....70-80 VALLEYS AND 63-72 MOUNTAINS.
* MIN HUMIDITY........21-30 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...SOUTHEAST 3 TO 8 MPH IN THE MORNING SHIFTING
TO THE SOUTH 8 TO 19 MPH WITH GUSTS TO AROUND 35 MPH IN THE
AFTERNOON.
* RIDGES/UPR SLOPES....SOUTH 5 TO 16 MPH. GUSTS UP TO 35 MPH IN THE
AFTERNOON.
* MIXING HEIGHT.......9000 FT AGL.
* TRANSPORT WINDS.....SOUTH 10 TO 20 MPH.
* CWR (> 0.10 IN).....0 PERCENT.
* VENTILATION INDEX...VERY HIGH (887) IN THE MORNING INCREASING TO
VERY HIGH (2053) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
TUESDAY
COOLER. MOSTLY CLOUDY WITH A CHANCE OF RAIN SHOWERS.
LOWS 44 TO 49. HIGHS 60 TO 70 VALLEYS...53 TO 61 MOUNTAINS.
SOUTHWEST WIND UP TO 10 MPH.
WEDNESDAY
PARTLY CLOUDY. A CHANCE OF RAIN SHOWERS. LOWS 43 TO
48. HIGHS 70 TO 79 VALLEYS...65 TO 74 MOUNTAINS. NORTH WIND 5 TO
15 MPH.
THURSDAY
PARTLY CLOUDY. A CHANCE OF SHOWERS AND THUNDERSTORMS.
LOWS IN THE LOWER TO MID 50S. HIGHS 75 TO 85 VALLEYS...69 TO
78 MOUNTAINS. NORTHEAST WIND UP TO 5 MPH.
FRIDAY
MOSTLY CLOUDY. A CHANCE OF SHOWERS AND THUNDERSTORMS.
LOWS IN THE LOWER TO MID 50S. HIGHS 68 TO 78 VALLEYS...63 TO
72 MOUNTAINS.
SATURDAY
PARTLY CLOUDY. A CHANCE OF RAIN SHOWERS. LOWS NEAR
50. HIGHS 67 TO 77 VALLEYS...61 TO 70 MOUNTAINS.
.8 TO 14 DAY OUTLOOK FOR MAY 31 - JUN 06, 2026
ABOVE NORMAL TEMPERATURES AND NEAR NORMAL PRECIPITATION.
WAZ699-241330-
OKANOGAN HIGHLANDS AND KETTLE MOUNTAINS (ZONE 699)-
INCLUDING THE CITIES OF REPUBLIC AND CURLEW
233 PM PDT SAT MAY 23 2026
TONIGHT
* SKY/WEATHER.........PARTLY CLOUDY.
* CHANCE OF LIGHTNING...0 PERCENT.
* MIN TEMPERATURE.....47-54.
* 24 HR TREND........2 DEGREES COOLER.
* MAX HUMIDITY........50-65 PERCENT.
* 24 HR TREND........10 PERCENT DRIER VALLEYS, AND UNCHANGED
MOUNTAINS.
* HUMIDITY RECOVERY...FAIR.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...WEST UP TO 8 MPH.
* RIDGES/UPR SLOPES....WEST 4 TO 10 MPH. GUSTS UP TO 25 MPH
IN THE EVENING.
* MIXING HEIGHT.......8000 FT AGL FALLING TO NEAR SURFACE.
* TRANSPORT WINDS.....NORTHWEST 5 TO 15 MPH.
* CWR (> 0.10 IN).....0 PERCENT.
* VENTILATION INDEX...VERY HIGH (1124) IN THE EVENING DECREASING TO
LOW (50) OVERNIGHT.
SUNDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* CHANCE OF LIGHTNING...0 PERCENT.
* MAX TEMPERATURE.....73-83 VALLEYS AND 64-73 MOUNTAINS.
* 24 HR TREND........4 DEGREES COOLER.
* MIN HUMIDITY........21-30 PERCENT.
* 24 HR TREND........5 PERCENT WETTER.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...SOUTHWEST 3 TO 12 MPH. GUSTS UP TO 25 MPH IN
THE AFTERNOON.
* RIDGES/UPR SLOPES....SOUTHWEST 3 TO 12 MPH WITH GUSTS TO AROUND
25 MPH.
* MIXING HEIGHT.......8000 FT AGL.
* TRANSPORT WINDS.....SOUTHWEST 10 TO 20 MPH.
* CWR (> 0.10 IN).....0 PERCENT.
* VENTILATION INDEX...HIGH (684) IN THE MORNING INCREASING TO VERY
HIGH (1345) IN THE AFTERNOON.
SUNDAY NIGHT
* SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY CLOUDY.
* CHANCE OF LIGHTNING...0 PERCENT.
* MIN TEMPERATURE.....47-55.
* MAX HUMIDITY........40-55 PERCENT.
* HUMIDITY RECOVERY...POOR.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...SOUTH 3 TO 12 MPH. GUSTS UP TO 25 MPH IN THE
EVENING.
* RIDGES/UPR SLOPES....SOUTH 4 TO 12 MPH. GUSTS UP TO 30 MPH
IN THE EVENING.
* MIXING HEIGHT.......6500 FT AGL FALLING TO NEAR SURFACE.
* TRANSPORT WINDS.....SOUTH 5 TO 15 MPH.
* CWR (> 0.10 IN).....0 PERCENT.
* VENTILATION INDEX...VERY HIGH (1032) IN THE EVENING DECREASING TO
LOW (48) OVERNIGHT.
MEMORIAL DAY
* SKY/WEATHER.........PARTLY SUNNY. RAIN SHOWERS LIKELY LATE IN THE
AFTERNOON.
* CHANCE OF LIGHTNING...0 PERCENT.
* MAX TEMPERATURE.....72-82 VALLEYS AND 62-71 MOUNTAINS.
* MIN HUMIDITY........20-30 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...SOUTHEAST 3 TO 6 MPH IN THE MORNING SHIFTING
TO THE SOUTH 6 TO 16 MPH WITH GUSTS TO AROUND 35 MPH IN THE
AFTERNOON.
* RIDGES/UPR SLOPES....SOUTH 5 TO 16 MPH. GUSTS UP TO 35 MPH IN THE
AFTERNOON.
* MIXING HEIGHT.......10000 FT AGL.
* TRANSPORT WINDS.....SOUTH 10 TO 20 MPH.
* CWR (> 0.10 IN).....0 PERCENT.
* VENTILATION INDEX...VERY HIGH (1096) IN THE MORNING INCREASING TO
VERY HIGH (2218) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
TUESDAY
COOLER. MOSTLY CLOUDY WITH RAIN SHOWERS LIKELY. LOWS
41 TO 49. HIGHS 60 TO 70 VALLEYS...52 TO 61 MOUNTAINS. WEST WIND
UP TO 10 MPH.
WEDNESDAY
WARMER. PARTLY CLOUDY. A CHANCE OF RAIN SHOWERS.
LOWS 41 TO 47. HIGHS 71 TO 81 VALLEYS...64 TO 73 MOUNTAINS. NORTH
WIND UP TO 10 MPH.
THURSDAY
PARTLY CLOUDY. A CHANCE OF SHOWERS AND THUNDERSTORMS.
LOWS 47 TO 53. HIGHS 76 TO 86 VALLEYS...69 TO 79 MOUNTAINS.
NORTHEAST WIND UP TO 5 MPH.
FRIDAY
MOSTLY CLOUDY. A CHANCE OF SHOWERS AND THUNDERSTORMS.
LOWS 49 TO 56. HIGHS 70 TO 80 VALLEYS...63 TO 72 MOUNTAINS.
SATURDAY
PARTLY CLOUDY. A CHANCE OF RAIN SHOWERS. LOWS 46 TO
52. HIGHS 67 TO 76 VALLEYS...61 TO 70 MOUNTAINS.
.8 TO 14 DAY OUTLOOK FOR MAY 31 - JUN 06, 2026
ABOVE NORMAL TEMPERATURES AND NEAR NORMAL PRECIPITATION.
WAZ700-701-241330-
SELKIRK MOUNTAINS OF NORTHEAST WASHINGTON (ZONE 700)-
FOOTHILLS OF NORTHEAST WASHINGTON (ZONE 701)-
INCLUDING THE CITIES OF METALINE FALLS, IONE, COLVILLE,
DEER PARK, AND NEWPORT
233 PM PDT SAT MAY 23 2026
TONIGHT
* SKY/WEATHER.........PARTLY CLOUDY.
* CHANCE OF LIGHTNING...0 PERCENT.
* MIN TEMPERATURE.....45-54.
* 24 HR TREND........2 DEGREES WARMER.
* MAX HUMIDITY........50-65 PERCENT.
* 24 HR TREND........40 PERCENT DRIER VALLEYS, AND 10 PERCENT DRIER
MOUNTAINS.
* HUMIDITY RECOVERY...FAIR.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...SOUTHWEST 4 TO 10 MPH. GUSTS UP TO 20
MPH IN THE EVENING.
* RIDGES/UPR SLOPES....SOUTHWEST 4 TO 10 MPH. GUSTS UP TO 20
MPH IN THE EVENING.
* MIXING HEIGHT.......8000 FT AGL FALLING TO NEAR SURFACE.
* TRANSPORT WINDS.....SOUTHWEST 5 TO 15 MPH.
* CWR (> 0.10 IN).....0 PERCENT.
* VENTILATION INDEX...VERY HIGH (1055) IN THE EVENING DECREASING TO
LOW (38) OVERNIGHT.
SUNDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* CHANCE OF LIGHTNING...0 PERCENT.
* MAX TEMPERATURE.....73-81 VALLEYS AND 64-74 MOUNTAINS.
* 24 HR TREND........4 DEGREES COOLER.
* MIN HUMIDITY........25-35 PERCENT.
* 24 HR TREND........2 PERCENT WETTER.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...SOUTHWEST 3 TO 13 MPH WITH GUSTS TO AROUND
25 MPH.
* RIDGES/UPR SLOPES....SOUTHWEST 4 TO 15 MPH WITH GUSTS TO AROUND
30 MPH.
* MIXING HEIGHT.......7000 FT AGL.
* TRANSPORT WINDS.....SOUTHWEST 10 TO 20 MPH.
* CWR (> 0.10 IN).....0 PERCENT.
* VENTILATION INDEX...HIGH (748) IN THE MORNING INCREASING TO VERY
HIGH (1165) IN THE AFTERNOON.
SUNDAY NIGHT
* SKY/WEATHER.........PARTLY CLOUDY.
* CHANCE OF LIGHTNING...0 PERCENT.
* MIN TEMPERATURE.....45-54.
* MAX HUMIDITY........45-60 PERCENT.
* HUMIDITY RECOVERY...POOR.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...SOUTH 3 TO 13 MPH. GUSTS UP TO 25 MPH IN THE
EVENING.
* RIDGES/UPR SLOPES....SOUTH 3 TO 13 MPH. GUSTS UP TO 30 MPH IN THE
EVENING.
* MIXING HEIGHT.......6000 FT AGL FALLING TO NEAR SURFACE.
* TRANSPORT WINDS.....SOUTH 5 TO 15 MPH.
* CWR (> 0.10 IN).....0 PERCENT.
* VENTILATION INDEX...VERY HIGH (857) IN THE EVENING DECREASING TO
LOW (39) OVERNIGHT.
MEMORIAL DAY
* SKY/WEATHER.........PARTLY SUNNY. A CHANCE OF RAIN SHOWERS LATE
IN THE AFTERNOON.
* CHANCE OF LIGHTNING...0 PERCENT.
* MAX TEMPERATURE.....74-83 VALLEYS AND 64-74 MOUNTAINS.
* MIN HUMIDITY........21-30 PERCENT.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...SOUTH 3 TO 12 MPH. GUSTS UP TO 30 MPH IN THE
AFTERNOON.
* RIDGES/UPR SLOPES....SOUTH 4 TO 14 MPH. GUSTS UP TO 30 MPH
IN THE AFTERNOON.
* MIXING HEIGHT.......9000 FT AGL.
* TRANSPORT WINDS.....SOUTH 10 TO 20 MPH.
* CWR (> 0.10 IN).....0 PERCENT.
* VENTILATION INDEX...VERY HIGH (905) IN THE MORNING INCREASING TO
VERY HIGH (1824) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
TUESDAY
COOLER. MOSTLY CLOUDY WITH A CHANCE OF RAIN SHOWERS.
LOWS 42 TO 49. HIGHS 60 TO 68 VALLEYS...51 TO 61 MOUNTAINS.
SOUTHWEST WIND UP TO 10 MPH.
WEDNESDAY
WARMER. MOSTLY CLOUDY. A CHANCE OF RAIN SHOWERS.
LOWS 40 TO 47. HIGHS 70 TO 78 VALLEYS...63 TO 73 MOUNTAINS. NORTH
WIND UP TO 5 MPH.
THURSDAY
PARTLY CLOUDY. A CHANCE OF SHOWERS AND THUNDERSTORMS.
LOWS 45 TO 53. HIGHS 76 TO 84 VALLEYS...68 TO 78 MOUNTAINS.
NORTHEAST WIND UP TO 5 MPH.
FRIDAY
MOSTLY CLOUDY. A CHANCE OF SHOWERS AND THUNDERSTORMS.
LOWS 47 TO 56. HIGHS 69 TO 77 VALLEYS...62 TO 72 MOUNTAINS.
SATURDAY
PARTLY CLOUDY. A CHANCE OF RAIN SHOWERS. LOWS 45 TO
52. HIGHS 67 TO 74 VALLEYS...59 TO 69 MOUNTAINS.
.8 TO 14 DAY OUTLOOK FOR MAY 31 - JUN 06, 2026
ABOVE NORMAL TEMPERATURES AND NEAR NORMAL PRECIPITATION.
IDZ101-241330-
NORTHERN AND CENTRAL IDAHO PANHANDLE (ZONE 101)-
INCLUDING THE CITIES OF ST. MARIES, RATHDRUM PRAIRIE,
SILVER VALLEY, BONNERS FERRY, AND PRIEST LAKE
233 PM PDT SAT MAY 23 2026
TONIGHT
* SKY/WEATHER.........PARTLY CLOUDY.
* CHANCE OF LIGHTNING...0 PERCENT.
* MIN TEMPERATURE.....45-54.
* 24 HR TREND........1 DEGREE WARMER.
* MAX HUMIDITY........55-70 PERCENT.
* 24 HR TREND........35 PERCENT DRIER VALLEYS, AND UNCHANGED
MOUNTAINS.
* HUMIDITY RECOVERY...FAIR.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...SOUTH 3 TO 12 MPH. GUSTS UP TO 20 MPH IN THE
EVENING.
* RIDGES/UPR SLOPES....SOUTH 3 TO 12 MPH WITH GUSTS TO AROUND 25
MPH.
* MIXING HEIGHT.......6000 FT AGL FALLING TO NEAR SURFACE.
* TRANSPORT WINDS.....SOUTHWEST 5 TO 15 MPH.
* CWR (> 0.10 IN).....0 PERCENT.
* VENTILATION INDEX...VERY HIGH (983) IN THE EVENING DECREASING TO
LOW (55) OVERNIGHT.
SUNDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* CHANCE OF LIGHTNING...0 PERCENT.
* MAX TEMPERATURE.....71-77 VALLEYS AND 61-71 MOUNTAINS.
* 24 HR TREND........3 DEGREES COOLER.
* MIN HUMIDITY........27-35 PERCENT VALLEYS AND 30-45 PERCENT
MOUNTAINS.
* 24 HR TREND........UNCHANGED.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...SOUTHWEST 3 TO 14 MPH WITH GUSTS TO AROUND
25 MPH.
* RIDGES/UPR SLOPES....SOUTHWEST 5 TO 16 MPH WITH GUSTS TO AROUND
30 MPH.
* MIXING HEIGHT.......6000 FT AGL.
* TRANSPORT WINDS.....SOUTHWEST 10 TO 20 MPH.
* CWR (> 0.10 IN).....0 PERCENT.
* VENTILATION INDEX...HIGH (723) IN THE MORNING INCREASING TO VERY
HIGH (1148) IN THE AFTERNOON.
SUNDAY NIGHT
* SKY/WEATHER.........PARTLY CLOUDY.
* CHANCE OF LIGHTNING...0 PERCENT.
* MIN TEMPERATURE.....45-53.
* MAX HUMIDITY........50-65 PERCENT.
* HUMIDITY RECOVERY...FAIR.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...SOUTH 3 TO 14 MPH. GUSTS UP TO 25 MPH IN THE
EVENING.
* RIDGES/UPR SLOPES....SOUTH 3 TO 14 MPH. GUSTS UP TO 30 MPH IN THE
EVENING.
* MIXING HEIGHT.......5000 FT AGL FALLING TO NEAR SURFACE.
* TRANSPORT WINDS.....SOUTH 5 TO 15 MPH.
* CWR (> 0.10 IN).....0 PERCENT.
* VENTILATION INDEX...HIGH (796) IN THE EVENING DECREASING TO LOW
(46) OVERNIGHT.
MEMORIAL DAY
* SKY/WEATHER.........PARTLY SUNNY. A CHANCE OF SHOWERS AND
THUNDERSTORMS LATE IN THE AFTERNOON.
* CHANCE OF LIGHTNING...20 PERCENT.
* MAX TEMPERATURE.....75-84 VALLEYS AND 68-78 MOUNTAINS.
* MIN HUMIDITY........24-30 PERCENT VALLEYS AND 26-40 PERCENT
MOUNTAINS.
* 20-FOOT WINDS.......
* VALLEYS/LWR SLOPES...SOUTH 3 TO 10 MPH. GUSTS UP TO 20 MPH IN THE
AFTERNOON.
* RIDGES/UPR SLOPES....SOUTH 3 TO 12 MPH. GUSTS UP TO 25 MPH IN THE
AFTERNOON.
* MIXING HEIGHT.......8000 FT AGL.
* TRANSPORT WINDS.....SOUTH 10 TO 20 MPH.
* CWR (> 0.10 IN).....0 PERCENT.
* VENTILATION INDEX...VERY HIGH (1039) IN THE MORNING INCREASING TO
VERY HIGH (1726) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
TUESDAY
COOLER. MOSTLY CLOUDY. A CHANCE OF RAIN SHOWERS. LOWS
41 TO 49. HIGHS 57 TO 67 VALLEYS...49 TO 59 MOUNTAINS. WEST WIND
UP TO 10 MPH.
WEDNESDAY
MOSTLY CLOUDY WITH A CHANCE OF RAIN SHOWERS. LOWS
41 TO 48. HIGHS 66 TO 74 VALLEYS...58 TO 68 MOUNTAINS. NORTH WIND
UP TO 5 MPH.
THURSDAY
PARTLY CLOUDY. A CHANCE OF SHOWERS AND THUNDERSTORMS.
LOWS 45 TO 52. HIGHS 74 TO 81 VALLEYS...65 TO 75 MOUNTAINS.
NORTHEAST WIND UP TO 5 MPH.
FRIDAY
MOSTLY CLOUDY. A CHANCE OF SHOWERS AND THUNDERSTORMS.
LOWS 48 TO 55. HIGHS 67 TO 76 VALLEYS...60 TO 70 MOUNTAINS.
SATURDAY
PARTLY CLOUDY. A CHANCE OF RAIN SHOWERS. LOWS 45 TO
52. HIGHS 65 TO 72 VALLEYS...57 TO 67 MOUNTAINS.
.8 TO 14 DAY OUTLOOK FOR MAY 31 - JUN 06, 2026
ABOVE NORMAL TEMPERATURES AND NEAR NORMAL PRECIPITATION.
WAZ705-706-241330-
FOOTHILLS OF CENTRAL WASHINGTON CASCADES (ZONE 705)-
WATERVILLE PLATEAU (ZONE 706)-
INCLUDING THE CITIES OF CHELAN, WENATCHEE, WATERVILLE,
AND GRAND COULEE
233 PM PDT SAT MAY 23 2026
...GUSTY WINDS AND LOW RELATIVE HUMIDITY FROM THIS AFTERNOON
THROUGH THIS EVENING...
TONIGHT
* SKY/WEATHER.........PARTLY CLOUDY.
* CHANCE OF LIGHTNING...0 PERCENT.
* MIN TEMPERATURE.....50-56.
* 24 HR TREND........2 DEGREES COOLER.
* MAX HUMIDITY........50-65 PERCENT.
* 24 HR TREND........UNCHANGED.
* HUMIDITY RECOVERY...FAIR.
* 20-FOOT WINDS.......WEST 9 TO 20 MPH WITH GUSTS TO AROUND 35 MPH.
* MIXING HEIGHT.......6000 FT AGL FALLING TO NEAR SURFACE.
* TRANSPORT WINDS.....WEST 10 TO 20 MPH.
* CWR (> 0.10 IN).....0 PERCENT.
* VENTILATION INDEX...VERY HIGH (926) IN THE EVENING DECREASING TO
LOW (90) OVERNIGHT.
SUNDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* CHANCE OF LIGHTNING...0 PERCENT.
* MAX TEMPERATURE.....74-84.
* 24 HR TREND........5 DEGREES COOLER.
* MIN HUMIDITY........20-27 PERCENT.
* 24 HR TREND........4 PERCENT WETTER.
* 20-FOOT WINDS.......WEST 5 TO 16 MPH. GUSTS UP TO 30 MPH IN THE
AFTERNOON.
* MIXING HEIGHT.......7000 FT AGL.
* TRANSPORT WINDS.....WEST 10 TO 20 MPH.
* CWR (> 0.10 IN).....0 PERCENT.
* VENTILATION INDEX...HIGH (560) IN THE MORNING INCREASING TO VERY
HIGH (1200) IN THE AFTERNOON.
SUNDAY NIGHT
* SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY CLOUDY.
* CHANCE OF LIGHTNING...0 PERCENT.
* MIN TEMPERATURE.....50-56.
* MAX HUMIDITY........40-50 PERCENT.
* HUMIDITY RECOVERY...POOR.
* 20-FOOT WINDS.......WEST 5 TO 16 MPH. GUSTS UP TO 30 MPH IN THE
EVENING.
* MIXING HEIGHT.......6000 FT AGL FALLING TO NEAR SURFACE.
* TRANSPORT WINDS.....WEST 10 TO 20 MPH.
* CWR (> 0.10 IN).....0 PERCENT.
* VENTILATION INDEX...VERY HIGH (967) IN THE EVENING DECREASING TO
LOW (43) OVERNIGHT.
MEMORIAL DAY
* SKY/WEATHER.........PARTLY SUNNY. A CHANCE OF RAIN SHOWERS LATE
IN THE AFTERNOON.
* CHANCE OF LIGHTNING...0 PERCENT.
* MAX TEMPERATURE.....70-80.
* MIN HUMIDITY........22-30 PERCENT.
* 20-FOOT WINDS.......SOUTH 3 TO 9 MPH IN THE MORNING INCREASING TO
11 TO 22 MPH WITH GUSTS TO AROUND 40 MPH IN THE AFTERNOON.
* MIXING HEIGHT.......9000 FT AGL.
* TRANSPORT WINDS.....SOUTHWEST 10 TO 20 MPH.
* CWR (> 0.10 IN).....0 PERCENT.
* VENTILATION INDEX...VERY HIGH (864) IN THE MORNING INCREASING TO
VERY HIGH (2077) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
TUESDAY
MOSTLY CLOUDY. A CHANCE OF RAIN SHOWERS. LOWS 42 TO
50. HIGHS 62 TO 71. NORTHWEST WIND 5 TO 10 MPH.
WEDNESDAY
WARMER. PARTLY CLOUDY. LOWS 44 TO 50. HIGHS 73 TO
81. NORTHWEST WIND 5 TO 15 MPH.
THURSDAY
PARTLY CLOUDY. A CHANCE OF SHOWERS AND THUNDERSTORMS.
LOWS 50 TO 56. HIGHS 77 TO 87. NORTHWEST WIND UP TO 10 MPH.
FRIDAY
PARTLY CLOUDY. A CHANCE OF RAIN SHOWERS. LOWS 52 TO 58.
HIGHS 71 TO 79.
SATURDAY
PARTLY CLOUDY. LOWS 46 TO 52. HIGHS 69 TO 78.
.8 TO 14 DAY OUTLOOK FOR MAY 31 - JUN 06, 2026
ABOVE NORMAL TEMPERATURES AND NEAR NORMAL PRECIPITATION.
WAZ707-241330-
WESTERN COLUMBIA BASIN (ZONE 707)-
INCLUDING THE CITIES OF MOSES LAKE AND EPHRATA
233 PM PDT SAT MAY 23 2026
...GUSTY WINDS AND LOW RELATIVE HUMIDITY FROM THIS AFTERNOON
THROUGH THIS EVENING...
TONIGHT
* SKY/WEATHER.........PARTLY CLOUDY.
* CHANCE OF LIGHTNING...0 PERCENT.
* MIN TEMPERATURE.....49-55.
* 24 HR TREND........2 DEGREES COOLER.
* MAX HUMIDITY........55-70 PERCENT.
* 24 HR TREND........10 PERCENT WETTER.
* HUMIDITY RECOVERY...FAIR.
* 20-FOOT WINDS.......WEST 8 TO 19 MPH WITH GUSTS TO AROUND 35 MPH.
* MIXING HEIGHT.......7000 FT AGL FALLING TO NEAR SURFACE.
* TRANSPORT WINDS.....WEST 10 TO 20 MPH.
* CWR (> 0.10 IN).....0 PERCENT.
* VENTILATION INDEX...VERY HIGH (1004) IN THE EVENING DECREASING TO
LOW (85) OVERNIGHT.
SUNDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* CHANCE OF LIGHTNING...0 PERCENT.
* MAX TEMPERATURE.....79-85.
* 24 HR TREND........3 DEGREES COOLER.
* MIN HUMIDITY........17-24 PERCENT.
* 24 HR TREND........3 PERCENT WETTER.
* 20-FOOT WINDS.......SOUTHWEST 4 TO 13 MPH WITH GUSTS TO AROUND 30
MPH.
* MIXING HEIGHT.......7500 FT AGL.
* TRANSPORT WINDS.....SOUTHWEST 5 TO 15 MPH.
* CWR (> 0.10 IN).....0 PERCENT.
* VENTILATION INDEX...HIGH (558) IN THE MORNING INCREASING TO VERY
HIGH (993) IN THE AFTERNOON.
SUNDAY NIGHT
* SKY/WEATHER.........PARTLY CLOUDY.
* CHANCE OF LIGHTNING...0 PERCENT.
* MIN TEMPERATURE.....49-55.
* MAX HUMIDITY........40-55 PERCENT.
* HUMIDITY RECOVERY...POOR.
* 20-FOOT WINDS.......SOUTHWEST 3 TO 11 MPH. GUSTS UP TO 25 MPH IN
THE EVENING.
* MIXING HEIGHT.......6500 FT AGL FALLING TO NEAR SURFACE.
* TRANSPORT WINDS.....SOUTHWEST 5 TO 15 MPH.
* CWR (> 0.10 IN).....0 PERCENT.
* VENTILATION INDEX...VERY HIGH (838) IN THE EVENING DECREASING TO
LOW (43) OVERNIGHT.
MEMORIAL DAY
* SKY/WEATHER.........PARTLY SUNNY. A CHANCE OF RAIN SHOWERS LATE
IN THE AFTERNOON.
* CHANCE OF LIGHTNING...0 PERCENT.
* MAX TEMPERATURE.....77-82.
* MIN HUMIDITY........19-26 PERCENT.
* 20-FOOT WINDS.......SOUTH 3 TO 9 MPH WITH GUSTS TO AROUND 20 MPH
IN THE MORNING SHIFTING TO THE SOUTHWEST 9 TO 22 MPH WITH GUSTS
TO AROUND 40 MPH IN THE AFTERNOON.
* MIXING HEIGHT.......8500 FT AGL.
* TRANSPORT WINDS.....SOUTHWEST 10 TO 20 MPH.
* CWR (> 0.10 IN).....0 PERCENT.
* VENTILATION INDEX...VERY HIGH (923) IN THE MORNING INCREASING TO
VERY HIGH (2110) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
TUESDAY
COOLER. MOSTLY CLOUDY. LOWS IN THE 40S. HIGHS 65 TO
71. WEST WIND 5 TO 15 MPH.
WEDNESDAY
PARTLY CLOUDY. A CHANCE OF RAIN SHOWERS. LOWS 43 TO
49. HIGHS 74 TO 79. NORTHWEST WIND 5 TO 10 MPH.
THURSDAY
PARTLY CLOUDY. A CHANCE OF SHOWERS AND THUNDERSTORMS.
LOWS 47 TO 54. HIGHS 80 TO 85. NORTH WIND 5 TO 10 MPH.
FRIDAY
PARTLY CLOUDY. A CHANCE OF RAIN SHOWERS. LOWS 50 TO 56.
HIGHS 74 TO 80.
SATURDAY
PARTLY CLOUDY. LOWS IN THE MID 40S TO LOWER 50S.
HIGHS IN THE 70S.
.8 TO 14 DAY OUTLOOK FOR MAY 31 - JUN 06, 2026
ABOVE NORMAL TEMPERATURES AND NEAR NORMAL PRECIPITATION.
WAZ708-241330-
EASTERN COLUMBIA BASIN - PALOUSE - SPOKANE AREA (ZONE 708)-
INCLUDING THE CITIES OF SPOKANE, PULLMAN, RITZVILLE, WILBUR,
AND CHENEY
233 PM PDT SAT MAY 23 2026
TONIGHT
* SKY/WEATHER.........PARTLY CLOUDY.
* CHANCE OF LIGHTNING...0 PERCENT.
* MIN TEMPERATURE.....49-54.
* 24 HR TREND........1 DEGREE WARMER.
* MAX HUMIDITY........55-65 PERCENT.
* 24 HR TREND........5 PERCENT DRIER.
* HUMIDITY RECOVERY...FAIR.
* 20-FOOT WINDS.......SOUTHWEST 4 TO 12 MPH WITH GUSTS TO AROUND 25
MPH.
* MIXING HEIGHT.......8000 FT AGL FALLING TO NEAR SURFACE.
* TRANSPORT WINDS.....SOUTHWEST 10 TO 15 MPH.
* CWR (> 0.10 IN).....0 PERCENT.
* VENTILATION INDEX...VERY HIGH (1118) IN THE EVENING DECREASING TO
LOW (54) OVERNIGHT.
SUNDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* CHANCE OF LIGHTNING...0 PERCENT.
* MAX TEMPERATURE.....76-83.
* 24 HR TREND........4 DEGREES COOLER.
* MIN HUMIDITY........20-28 PERCENT.
* 24 HR TREND........6 PERCENT WETTER.
* 20-FOOT WINDS.......SOUTHWEST 6 TO 14 MPH WITH GUSTS TO AROUND 25
MPH.
* MIXING HEIGHT.......6500 FT AGL.
* TRANSPORT WINDS.....SOUTHWEST 10 TO 20 MPH.
* CWR (> 0.10 IN).....0 PERCENT.
* VENTILATION INDEX...HIGH (745) IN THE MORNING INCREASING TO VERY
HIGH (1058) IN THE AFTERNOON.
SUNDAY NIGHT
* SKY/WEATHER.........PARTLY CLOUDY.
* CHANCE OF LIGHTNING...0 PERCENT.
* MIN TEMPERATURE.....49-53.
* MAX HUMIDITY........45-55 PERCENT.
* HUMIDITY RECOVERY...POOR.
* 20-FOOT WINDS.......SOUTH 4 TO 12 MPH. GUSTS UP TO 25 MPH IN THE
EVENING.
* MIXING HEIGHT.......5500 FT AGL FALLING TO NEAR SURFACE.
* TRANSPORT WINDS.....SOUTH 5 TO 15 MPH.
* CWR (> 0.10 IN).....0 PERCENT.
* VENTILATION INDEX...VERY HIGH (804) IN THE EVENING DECREASING TO
LOW (53) OVERNIGHT.
MEMORIAL DAY
* SKY/WEATHER.........MOSTLY SUNNY. A CHANCE OF RAIN SHOWERS LATE
IN THE AFTERNOON.
* CHANCE OF LIGHTNING...0 PERCENT.
* MAX TEMPERATURE.....78-86.
* MIN HUMIDITY........22-29 PERCENT.
* 20-FOOT WINDS.......SOUTH 5 TO 16 MPH. GUSTS UP TO 30 MPH IN THE
AFTERNOON.
* MIXING HEIGHT.......8500 FT AGL.
* TRANSPORT WINDS.....SOUTHWEST 10 TO 20 MPH.
* CWR (> 0.10 IN).....0 PERCENT.
* VENTILATION INDEX...VERY HIGH (855) IN THE MORNING INCREASING TO
VERY HIGH (1632) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
TUESDAY
COOLER. MOSTLY CLOUDY WITH A CHANCE OF RAIN SHOWERS.
LOWS 43 TO 48. HIGHS 61 TO 67. SOUTHWEST WIND 5 TO 15 MPH.
WEDNESDAY
MOSTLY CLOUDY. A CHANCE OF RAIN SHOWERS. LOWS IN THE
LOWER TO MID 40S. HIGHS 69 TO 76. WEST WIND UP TO 5 MPH.
THURSDAY
PARTLY CLOUDY. A CHANCE OF SHOWERS AND THUNDERSTORMS.
LOWS 46 TO 51. HIGHS 77 TO 82. EAST WIND UP TO 5 MPH.
FRIDAY
MOSTLY CLOUDY. A CHANCE OF SHOWERS AND THUNDERSTORMS.
LOWS 49 TO 54. HIGHS 69 TO 76.
SATURDAY
PARTLY CLOUDY. LOWS 46 TO 51. HIGHS 69 TO 76.
.8 TO 14 DAY OUTLOOK FOR MAY 31 - JUN 06, 2026
ABOVE NORMAL TEMPERATURES AND NEAR NORMAL PRECIPITATION.
WAZ709-241330-
LOWER PALOUSE - SNAKE RIVER (ZONE 709)-
INCLUDING THE CITY OF POMEROY
233 PM PDT SAT MAY 23 2026
TONIGHT
* SKY/WEATHER.........PARTLY CLOUDY.
* CHANCE OF LIGHTNING...0 PERCENT.
* MIN TEMPERATURE.....51-57.
* 24 HR TREND........4 DEGREES WARMER.
* MAX HUMIDITY........45-60 PERCENT.
* 24 HR TREND........5 PERCENT DRIER.
* HUMIDITY RECOVERY...POOR.
* 20-FOOT WINDS.......SOUTHWEST 4 TO 13 MPH WITH GUSTS TO AROUND 25
MPH.
* MIXING HEIGHT.......6000 FT AGL FALLING TO NEAR SURFACE.
* TRANSPORT WINDS.....SOUTHWEST 10 TO 20 MPH.
* CWR (> 0.10 IN).....0 PERCENT.
* VENTILATION INDEX...VERY HIGH (885) IN THE EVENING DECREASING TO
LOW (76) OVERNIGHT.
SUNDAY
* SKY/WEATHER.........MOSTLY SUNNY.
* CHANCE OF LIGHTNING...0 PERCENT.
* MAX TEMPERATURE.....76-86.
* 24 HR TREND........3 DEGREES COOLER.
* MIN HUMIDITY........19-26 PERCENT.
* 24 HR TREND........3 PERCENT DRIER.
* 20-FOOT WINDS.......SOUTHWEST 5 TO 16 MPH WITH GUSTS TO AROUND 30
MPH.
* MIXING HEIGHT.......5500 FT AGL.
* TRANSPORT WINDS.....SOUTHWEST 10 TO 20 MPH.
* CWR (> 0.10 IN).....0 PERCENT.
* VENTILATION INDEX...HIGH (528) IN THE MORNING INCREASING TO VERY
HIGH (801) IN THE AFTERNOON.
SUNDAY NIGHT
* SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY.
* CHANCE OF LIGHTNING...0 PERCENT.
* MIN TEMPERATURE.....51-57.
* MAX HUMIDITY........35-50 PERCENT.
* HUMIDITY RECOVERY...POOR.
* 20-FOOT WINDS.......SOUTHWEST 4 TO 12 MPH WITH GUSTS TO AROUND 25
MPH.
* MIXING HEIGHT.......2500 FT AGL FALLING TO NEAR SURFACE.
* TRANSPORT WINDS.....SOUTHWEST 5 TO 15 MPH.
* CWR (> 0.10 IN).....0 PERCENT.
* VENTILATION INDEX...MODERATE (412) IN THE EVENING DECREASING TO
LOW (62) OVERNIGHT.
MEMORIAL DAY
* SKY/WEATHER.........MOSTLY SUNNY. A CHANCE OF RAIN SHOWERS LATE
IN THE AFTERNOON.
* CHANCE OF LIGHTNING...0 PERCENT.
* MAX TEMPERATURE.....80-90.
* MIN HUMIDITY........22-30 PERCENT.
* 20-FOOT WINDS.......SOUTHEAST 3 TO 8 MPH IN THE MORNING SHIFTING
TO THE NORTHWEST 4 TO 8 MPH IN THE AFTERNOON.
* MIXING HEIGHT.......6000 FT AGL.
* TRANSPORT WINDS.....SOUTHWEST 5 TO 15 MPH.
* CWR (> 0.10 IN).....0 PERCENT.
* VENTILATION INDEX...MODERATE (306) IN THE MORNING INCREASING TO
VERY HIGH (1151) IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
TUESDAY
MUCH COOLER. MOSTLY CLOUDY WITH A CHANCE OF RAIN
SHOWERS. LOWS IN THE MID TO UPPER 40S. HIGHS 58 TO 68. WEST WIND
10 TO 20 MPH.
WEDNESDAY
MOSTLY CLOUDY. A CHANCE OF RAIN SHOWERS. LOWS IN THE
MID TO UPPER 40S. HIGHS 64 TO 74. WEST WIND UP TO 10 MPH.
THURSDAY
PARTLY CLOUDY. A CHANCE OF SHOWERS AND THUNDERSTORMS.
LOWS NEAR 50. HIGHS 73 TO 83. SOUTHWEST WIND UP TO 5 MPH.
FRIDAY
MOSTLY CLOUDY. A CHANCE OF SHOWERS AND THUNDERSTORMS.
LOWS IN THE LOWER TO MID 50S. HIGHS 68 TO 78.
SATURDAY
PARTLY CLOUDY. A CHANCE OF RAIN SHOWERS. LOWS NEAR
50. HIGHS 68 TO 77.
.8 TO 14 DAY OUTLOOK FOR MAY 31 - JUN 06, 2026
ABOVE NORMAL TEMPERATURES AND NEAR NORMAL PRECIPITATION.
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