362  
FNUS55 KBYZ 080849  
FWFBYZ  
 
FIRE WEATHER PLANNING FORECAST FOR SCEN AND SERN MONTANA  
NATIONAL WEATHER SERVICE BILLINGS MT  
249 AM MDT THU MAY 8 2025  
   
DISCUSSION
 
 
DRIER AND WARMER CONDITIONS WILL PREVAIL THROUGH THE WEEKEND. A  
WEAK DISTURBANCE PASSING THROUGH THE REGION WILL BRING ISOLATED TO  
SCATTERED SHOWERS AND THUNDERSTORMS THIS AFTERNOON AND EVENING,  
WITH LINGERING CHANCES OVER THE SOUTHERN MOUNTAINS FRIDAY.  
TEMPERATURES OVER THE LOWER ELEVATIONS WILL WARM INTO THE 70S AND  
80S TODAY THROUGH FRIDAY, WITH SOME LOCATIONS APPROACHING 90  
DEGREES OVER THE WEEKEND. MINIMUM RH WILL TREND FROM THE 20S TO  
30S PERCENT THROUGH FRIDAY, DROPPING INTO THE TEENS AND 20S OVER  
THE WEEKEND. WINDS COULD BE BREEZY AT TIMES, ESPECIALLY ALONG THE  
WESTERN FOOTHILLS. CONDITIONS BEGIN TRENDING COOLER AND MORE  
UNSETTLED OVER THE WEST STARTING SUNDAY, SPREADING OVER THE REST  
OF THE AREA EARLY NEXT WEEK. PALMQUIST  
 
MTZ123-082230-  
GALLATIN NATIONAL FOREST-  
249 AM MDT THU MAY 8 2025  
   
TODAY
 
 
* SKY/WEATHER...........MOSTLY SUNNY. SCATTERED RAIN SHOWERS AND  
ISOLATED THUNDERSTORMS IN THE AFTERNOON.  
* MAX TEMPERATURE.......68-77 AT 5000 FEET...56-66 AT 7000 FEET.  
* 24 HR TREND.........2 DEGREES WARMER.  
* MIN HUMIDITY..........24-34 PERCENT AT 5000 FEET...28-38 PERCENT  
AT 7000 FEET.  
* 24 HR TREND.........10 PERCENT DRIER.  
* WIND (20 FT)  
* SLOPE/VALLEY.........SOUTH WINDS 5 TO 10 MPH IN THE MORNING  
SHIFTING TO THE WEST IN THE AFTERNOON.  
* RIDGETOP.............NORTHWEST 5 TO 15 MPH.  
* CHANCE OF LIGHTNING...20 PERCENT.  
* CWR...................15 PERCENT.  
   
TONIGHT
 
 
* SKY/WEATHER...........MOSTLY CLOUDY WITH ISOLATED SHOWERS AND  
THUNDERSTORMS IN THE EVENING, THEN MOSTLY CLEAR OVERNIGHT.  
* MIN TEMPERATURE.......39-49 AT 5000 FEET...36-46 AT 7000 FEET.  
* 24 HR TREND.........2 DEGREES COOLER.  
* MAX HUMIDITY..........71-81 PERCENT AT 5000 FEET...67-77 PERCENT  
AT 7000 FEET.  
* 24 HR TREND.........8 PERCENT WETTER.  
* WIND (20 FT)  
* SLOPE/VALLEY.........SOUTHEAST WINDS 5 TO 10 MPH.  
* RIDGETOP.............SOUTHEAST 5 TO 10 MPH.  
* CHANCE OF LIGHTNING...18 PERCENT.  
* CWR...................15 PERCENT.  
   
FRIDAY
 
 
* SKY/WEATHER...........SUNNY.  
* MAX TEMPERATURE.......71-81 AT 5000 FEET...59-69 AT 7000 FEET.  
* 24 HR TREND.........4 DEGREES WARMER.  
* MIN HUMIDITY..........18-23 PERCENT.  
* 24 HR TREND.........6 PERCENT DRIER.  
* WIND (20 FT)  
* SLOPE/VALLEY.........SOUTHWEST WINDS 5 TO 10 MPH.  
* RIDGETOP.............WEST 5 TO 15 MPH.  
* CHANCE OF LIGHTNING...2 PERCENT.  
* CWR...................ZERO.  
 
   
FORECAST DAYS 3 THROUGH 7...
 
   
FRIDAY NIGHT
 
PARTLY CLOUDY. LOWS 44 TO 54. SOUTH WINDS 5 TO  
10 MPH.    
SATURDAY
 
MOSTLY CLOUDY. ISOLATED SHOWERS. LOWS 48 TO 58. HIGHS  
76 TO 84. SOUTH WINDS 5 TO 15 MPH.    
SUNDAY
 
MOSTLY CLOUDY. SCATTERED SHOWERS AND ISOLATED  
THUNDERSTORMS. LOWS 44 TO 54. HIGHS 70 TO 80. SOUTH WINDS 5 TO  
15 MPH.    
MONDAY
 
MOSTLY CLOUDY. SCATTERED SHOWERS, SNOW SHOWERS AND  
ISOLATED THUNDERSTORMS. LOWS 36 TO 46. HIGHS 63 TO 72. SOUTHWEST  
WINDS 5 TO 15 MPH.    
TUESDAY
 
COOLER. MOSTLY CLOUDY. NUMEROUS SHOWERS AND SNOW  
SHOWERS. LOWS 32 TO 42. HIGHS 51 TO 61.    
WEDNESDAY
 
MOSTLY CLOUDY. NUMEROUS SNOW SHOWERS AND SHOWERS.  
HIGHS 48 TO 58.  
 

 
 
MTZ124-082230-  
WHEATLAND COUNTY/SWEET GRASS COUNTY-  
249 AM MDT THU MAY 8 2025  
   
TODAY
 
 
* SKY/WEATHER...........MOSTLY SUNNY. SCATTERED RAIN SHOWERS AND  
ISOLATED THUNDERSTORMS IN THE AFTERNOON.  
* MAX TEMPERATURE.......72-77.  
* 24 HR TREND.........3 DEGREES WARMER.  
* MIN HUMIDITY..........25-30 PERCENT.  
* 24 HR TREND.........8 PERCENT DRIER.  
* WIND (20 FT)  
* PLAINS...............WEST WINDS 10 TO 20 MPH.  
* CHANCE OF LIGHTNING...20 PERCENT.  
* CWR...................15 PERCENT.  
   
TONIGHT
 
 
* SKY/WEATHER...........PARTLY CLOUDY. SCATTERED RAIN SHOWERS AND  
ISOLATED THUNDERSTORMS IN THE EVENING.  
* MIN TEMPERATURE.......41-46.  
* 24 HR TREND.........UNCHANGED.  
* MAX HUMIDITY..........72-77 PERCENT.  
* 24 HR TREND.........5 PERCENT DRIER.  
* WIND (20 FT)  
* PLAINS...............WEST WINDS 5 TO 15 MPH.  
* CHANCE OF LIGHTNING...20 PERCENT.  
* CWR...................25 PERCENT.  
   
FRIDAY
 
 
* SKY/WEATHER...........SUNNY.  
* MAX TEMPERATURE.......74-79.  
* 24 HR TREND.........2 DEGREES WARMER.  
* MIN HUMIDITY..........20-25 PERCENT.  
* 24 HR TREND.........5 PERCENT DRIER.  
* WIND (20 FT)  
* PLAINS...............SOUTH WINDS 5 TO 15 MPH.  
* CHANCE OF LIGHTNING...3 PERCENT.  
* CWR...................ZERO.  
 
   
FORECAST DAYS 3 THROUGH 7...
 
   
FRIDAY NIGHT
 
PARTLY CLOUDY. LOWS 44 TO 49. SOUTH WINDS 5 TO  
15 MPH.    
SATURDAY
 
MOSTLY CLOUDY. ISOLATED SHOWERS. LOWS 48 TO 53. HIGHS  
82 TO 87. SOUTHWEST WINDS 10 TO 20 MPH WITH GUSTS TO AROUND  
30 MPH.    
SUNDAY
 
MOSTLY CLOUDY. SCATTERED SHOWERS AND ISOLATED  
THUNDERSTORMS. LOWS 45 TO 50. HIGHS 74 TO 79. SOUTHWEST WINDS  
10 TO 20 MPH WITH GUSTS TO AROUND 30 MPH.    
MONDAY
 
MOSTLY CLOUDY. SCATTERED SHOWERS AND ISOLATED  
THUNDERSTORMS. LOWS 39 TO 44. HIGHS 69 TO 74. WEST WINDS 10 TO  
20 MPH WITH GUSTS TO AROUND 35 MPH.    
TUESDAY
 
COOLER. MOSTLY CLOUDY. NUMEROUS SHOWERS. LOWS 37 TO  
42. HIGHS 55 TO 60.    
WEDNESDAY
 
MOSTLY CLOUDY. NUMEROUS SHOWERS. HIGHS 53 TO 58.  
 

 
 
MTZ125-082230-  
STILLWATER COUNTY-  
249 AM MDT THU MAY 8 2025  
   
TODAY
 
 
* SKY/WEATHER...........PARTLY SUNNY. SCATTERED RAIN SHOWERS AND  
ISOLATED THUNDERSTORMS IN THE AFTERNOON.  
* MAX TEMPERATURE.......73-78.  
* 24 HR TREND.........5 DEGREES WARMER.  
* MIN HUMIDITY..........30-35 PERCENT.  
* 24 HR TREND.........7 PERCENT DRIER.  
* WIND (20 FT)  
* PLAINS...............NORTHWEST WINDS 5 TO 10 MPH.  
* CHANCE OF LIGHTNING...24 PERCENT.  
* CWR...................10 PERCENT.  
   
TONIGHT
 
 
* SKY/WEATHER...........MOSTLY CLOUDY WITH SCATTERED RAIN SHOWERS  
AND ISOLATED THUNDERSTORMS IN THE EVENING, THEN MOSTLY CLEAR  
OVERNIGHT.  
* MIN TEMPERATURE.......43-48.  
* 24 HR TREND.........1 DEGREE COOLER.  
* MAX HUMIDITY..........70-75 PERCENT.  
* 24 HR TREND.........11 PERCENT DRIER.  
* WIND (20 FT)  
* PLAINS...............SOUTHWEST WINDS 5 TO 10 MPH.  
* CHANCE OF LIGHTNING...20 PERCENT.  
* CWR...................25 PERCENT.  
   
FRIDAY
 
 
* SKY/WEATHER...........SUNNY.  
* MAX TEMPERATURE.......74-79.  
* 24 HR TREND.........1 DEGREE WARMER.  
* MIN HUMIDITY..........32-37 PERCENT.  
* 24 HR TREND.........2 PERCENT WETTER.  
* WIND (20 FT)  
* PLAINS...............EAST WINDS 5 TO 10 MPH.  
* CHANCE OF LIGHTNING...9 PERCENT.  
* CWR...................ZERO.  
 
   
FORECAST DAYS 3 THROUGH 7...
 
   
FRIDAY NIGHT
 
MOSTLY CLEAR. LOWS 47 TO 52. SOUTH WINDS 5 TO  
10 MPH.    
SATURDAY
 
PARTLY CLOUDY. LOWS 53 TO 58. HIGHS 82 TO 87. SOUTH  
WINDS 5 TO 10 MPH.    
SUNDAY
 
MOSTLY CLOUDY. SCATTERED SHOWERS AND ISOLATED  
THUNDERSTORMS. LOWS 49 TO 54. HIGHS 78 TO 83. SOUTHWEST WINDS  
5 TO 15 MPH.    
MONDAY
 
MOSTLY CLOUDY. SCATTERED SHOWERS AND ISOLATED  
THUNDERSTORMS. LOWS 42 TO 47. HIGHS 72 TO 77. WEST WINDS 5 TO  
15 MPH.    
TUESDAY
 
COOLER. MOSTLY CLOUDY. NUMEROUS SHOWERS. LOWS 39 TO  
44. HIGHS 59 TO 64.    
WEDNESDAY
 
MOSTLY CLOUDY. NUMEROUS SHOWERS. HIGHS 54 TO 59.  
 

 
 
MTZ126-082230-  
BEARTOOTH RANGER DISTRICT CUSTER NATIONAL FOREST-  
249 AM MDT THU MAY 8 2025  
   
TODAY
 
 
* SKY/WEATHER...........PARTLY SUNNY. SCATTERED SHOWERS AND  
THUNDERSTORMS IN THE AFTERNOON.  
* MAX TEMPERATURE.......68-75 AT 5000 FEET...58-68 AT 7000 FEET.  
* 24 HR TREND.........6 DEGREES WARMER.  
* MIN HUMIDITY..........25-35 PERCENT AT 5000 FEET...35-45 PERCENT  
AT 7000 FEET.  
* 24 HR TREND.........1 PERCENT WETTER.  
* WIND (20 FT)  
* SLOPE/VALLEY.........NORTHWEST WINDS 5 TO 15 MPH.  
* RIDGETOP.............NORTHWEST 5 TO 15 MPH.  
* CHANCE OF LIGHTNING...25 PERCENT.  
* CWR...................25 PERCENT.  
   
TONIGHT
 
 
* SKY/WEATHER...........PARTLY CLOUDY. SCATTERED RAIN SHOWERS AND  
ISOLATED THUNDERSTORMS IN THE EVENING.  
* MIN TEMPERATURE.......45-51 AT 5000 FEET...37-47 AT 7000 FEET.  
* 24 HR TREND.........UNCHANGED.  
* MAX HUMIDITY..........64-69 PERCENT.  
* 24 HR TREND.........1 PERCENT WETTER.  
* WIND (20 FT)  
* SLOPE/VALLEY.........WEST WINDS 5 TO 10 MPH.  
* RIDGETOP.............WEST 5 TO 15 MPH.  
* CHANCE OF LIGHTNING...19 PERCENT.  
* CWR...................25 PERCENT.  
   
FRIDAY
 
 
* SKY/WEATHER...........MOSTLY SUNNY. ISOLATED RAIN SHOWERS IN  
THE AFTERNOON.  
* MAX TEMPERATURE.......69-78 AT 5000 FEET...61-71 AT 7000 FEET.  
* 24 HR TREND.........3 DEGREES WARMER.  
* MIN HUMIDITY..........25-35 PERCENT AT 5000 FEET...28-38 PERCENT  
AT 7000 FEET.  
* 24 HR TREND.........8 PERCENT DRIER.  
* WIND (20 FT)  
* SLOPE/VALLEY.........SOUTHEAST WINDS 5 TO 10 MPH.  
* RIDGETOP.............SOUTHEAST 5 TO 15 MPH.  
* CHANCE OF LIGHTNING...14 PERCENT.  
* CWR...................10 PERCENT.  
 
   
FORECAST DAYS 3 THROUGH 7...
 
   
FRIDAY NIGHT
 
MOSTLY CLEAR. LOWS 48 TO 56. SOUTHWEST WINDS 5 TO  
15 MPH.    
SATURDAY
 
PARTLY CLOUDY. LOWS 54 TO 60. HIGHS 75 TO 84.  
SOUTHWEST WINDS 5 TO 15 MPH.    
SUNDAY
 
MOSTLY CLOUDY. SCATTERED SHOWERS AND ISOLATED  
THUNDERSTORMS. LOWS 51 TO 57. HIGHS 75 TO 83. SOUTHWEST WINDS  
15 TO 25 MPH WITH GUSTS TO AROUND 40 MPH.    
MONDAY
 
MOSTLY CLOUDY. SCATTERED SHOWERS AND SNOW SHOWERS. LOWS  
43 TO 48. HIGHS 70 TO 78. SOUTHWEST WINDS 10 TO 20 MPH WITH GUSTS  
TO AROUND 40 MPH.    
TUESDAY
 
COOLER. MOSTLY CLOUDY. NUMEROUS SNOW SHOWERS. LOWS  
38 TO 43. HIGHS 57 TO 64.    
WEDNESDAY
 
MOSTLY CLOUDY. NUMEROUS SNOW SHOWERS. HIGHS 46 TO  
56.  
 

 
 
MTZ127-082230-  
GOLDEN VALLEY COUNTY/MUSSELSHELL COUNTY-  
249 AM MDT THU MAY 8 2025  
   
TODAY
 
 
* SKY/WEATHER...........MOSTLY SUNNY. SCATTERED RAIN SHOWERS AND  
ISOLATED THUNDERSTORMS IN THE AFTERNOON.  
* MAX TEMPERATURE.......72-77.  
* 24 HR TREND.........6 DEGREES WARMER.  
* MIN HUMIDITY..........24-29 PERCENT.  
* 24 HR TREND.........5 PERCENT DRIER.  
* WIND (20 FT)  
* PLAINS...............WEST WINDS 5 TO 15 MPH.  
* CHANCE OF LIGHTNING...20 PERCENT.  
* CWR...................15 PERCENT.  
   
TONIGHT
 
 
* SKY/WEATHER...........MOSTLY CLOUDY. SCATTERED RAIN SHOWERS AND  
ISOLATED THUNDERSTORMS IN THE EVENING, THEN ISOLATED RAIN SHOWERS  
OVERNIGHT.  
* MIN TEMPERATURE.......48-53.  
* 24 HR TREND.........2 DEGREES COOLER.  
* MAX HUMIDITY..........62-67 PERCENT.  
* 24 HR TREND.........6 PERCENT WETTER.  
* WIND (20 FT)  
* PLAINS...............NORTH WINDS 5 TO 15 MPH.  
* CHANCE OF LIGHTNING...20 PERCENT.  
* CWR...................20 PERCENT.  
   
FRIDAY
 
 
* SKY/WEATHER...........SUNNY.  
* MAX TEMPERATURE.......72-77.  
* 24 HR TREND.........UNCHANGED.  
* MIN HUMIDITY..........25-30 PERCENT.  
* 24 HR TREND.........1 PERCENT WETTER.  
* WIND (20 FT)  
* PLAINS...............SOUTHEAST WINDS 5 TO 10 MPH.  
* CHANCE OF LIGHTNING...1 PERCENT.  
* CWR...................ZERO.  
 
   
FORECAST DAYS 3 THROUGH 7...
 
   
FRIDAY NIGHT
 
MOSTLY CLEAR. LOWS 53 TO 58. SOUTH WINDS 5 TO  
10 MPH.    
SATURDAY
 
PARTLY CLOUDY. ISOLATED SHOWERS. LOWS 56 TO 61. HIGHS  
81 TO 86. SOUTHWEST WINDS 5 TO 15 MPH.    
SUNDAY
 
MOSTLY CLOUDY. SCATTERED SHOWERS. LOWS 54 TO 59. HIGHS  
77 TO 82. SOUTHWEST WINDS 5 TO 15 MPH.    
MONDAY
 
MOSTLY CLOUDY. SCATTERED SHOWERS. LOWS 45 TO 50. HIGHS  
73 TO 78. WEST WINDS 5 TO 15 MPH.    
TUESDAY
 
COOLER. MOSTLY CLOUDY. NUMEROUS SHOWERS. LOWS 43 TO  
48. HIGHS 57 TO 62.    
WEDNESDAY
 
MOSTLY CLOUDY. NUMEROUS SHOWERS. HIGHS 51 TO 56.  
 

 
 
MTZ128-082230-  
YELLOWSTONE COUNTY-  
249 AM MDT THU MAY 8 2025  
   
TODAY
 
 
* SKY/WEATHER...........PARTLY SUNNY. SCATTERED RAIN SHOWERS AND  
ISOLATED THUNDERSTORMS IN THE AFTERNOON.  
* MAX TEMPERATURE.......77-82.  
* 24 HR TREND.........6 DEGREES WARMER.  
* MIN HUMIDITY..........25-30 PERCENT.  
* 24 HR TREND.........3 PERCENT DRIER.  
* WIND (20 FT)  
* PLAINS...............WEST WINDS 5 TO 15 MPH.  
* CHANCE OF LIGHTNING...20 PERCENT.  
* CWR...................10 PERCENT.  
   
TONIGHT
 
 
* SKY/WEATHER...........PARTLY CLOUDY. SCATTERED RAIN SHOWERS AND  
ISOLATED THUNDERSTORMS IN THE EVENING, THEN ISOLATED RAIN SHOWERS  
OVERNIGHT.  
* MIN TEMPERATURE.......47-52.  
* 24 HR TREND.........1 DEGREE COOLER.  
* MAX HUMIDITY..........76-81 PERCENT.  
* 24 HR TREND.........9 PERCENT WETTER.  
* WIND (20 FT)  
* PLAINS...............NORTHWEST WINDS 5 TO 15 MPH.  
* CHANCE OF LIGHTNING...21 PERCENT.  
* CWR...................25 PERCENT.  
   
FRIDAY
 
 
* SKY/WEATHER...........SUNNY.  
* MAX TEMPERATURE.......77-82.  
* 24 HR TREND.........UNCHANGED.  
* MIN HUMIDITY..........27-32 PERCENT.  
* 24 HR TREND.........2 PERCENT WETTER.  
* WIND (20 FT)  
* PLAINS...............SOUTHEAST WINDS 5 TO 10 MPH.  
* CHANCE OF LIGHTNING...2 PERCENT.  
* CWR...................ZERO.  
 
   
FORECAST DAYS 3 THROUGH 7...
 
   
FRIDAY NIGHT
 
MOSTLY CLEAR. LOWS 51 TO 56. SOUTH WINDS 5 TO  
10 MPH.    
SATURDAY
 
PARTLY CLOUDY. LOWS 57 TO 62. HIGHS 85 TO 90.  
SOUTHWEST WINDS 5 TO 15 MPH.    
SUNDAY
 
MOSTLY CLOUDY. SCATTERED SHOWERS AND ISOLATED  
THUNDERSTORMS. LOWS 55 TO 60. HIGHS 82 TO 87. SOUTHWEST WINDS  
10 TO 20 MPH.    
MONDAY
 
MOSTLY CLOUDY. SCATTERED SHOWERS AND ISOLATED  
THUNDERSTORMS. LOWS 47 TO 52. HIGHS 78 TO 83. WEST WINDS 10 TO  
20 MPH.    
TUESDAY
 
COOLER. MOSTLY CLOUDY. NUMEROUS SHOWERS. LOWS 43 TO  
48. HIGHS 63 TO 68.    
WEDNESDAY
 
MOSTLY CLOUDY. NUMEROUS SHOWERS. HIGHS 56 TO 61.  
 

 
 
MTZ129-082230-  
CROW INDIAN RESERVATION/BIGHORN CANYON REC AREA-  
249 AM MDT THU MAY 8 2025  
   
TODAY
 
 
* SKY/WEATHER...........MOSTLY SUNNY. ISOLATED SHOWERS AND  
THUNDERSTORMS IN THE AFTERNOON.  
* MAX TEMPERATURE.......67-77 AT 5000 FEET...60-66 AT 7000 FEET.  
* 24 HR TREND.........3 DEGREES WARMER.  
* MIN HUMIDITY..........24-34 PERCENT AT 5000 FEET...33-38 PERCENT  
AT 7000 FEET.  
* 24 HR TREND.........9 PERCENT DRIER.  
* WIND (20 FT)  
* SLOPE/VALLEY.........WEST WINDS 5 TO 15 MPH.  
* RIDGETOP.............NORTHWEST 10 TO 20 MPH.  
* CHANCE OF LIGHTNING...18 PERCENT.  
* CWR...................10 PERCENT.  
   
TONIGHT
 
 
* SKY/WEATHER...........MOSTLY CLOUDY. SCATTERED RAIN SHOWERS AND  
ISOLATED THUNDERSTORMS IN THE EVENING, THEN SCATTERED RAIN  
SHOWERS OVERNIGHT.  
* MIN TEMPERATURE.......46-51 AT 5000 FEET...42-47 AT 7000 FEET.  
* 24 HR TREND.........2 DEGREES COOLER.  
* MAX HUMIDITY..........67-72 PERCENT.  
* 24 HR TREND.........3 PERCENT WETTER.  
* WIND (20 FT)  
* SLOPE/VALLEY.........WEST WINDS 5 TO 10 MPH.  
* RIDGETOP.............SOUTHWEST 5 TO 15 MPH.  
* CHANCE OF LIGHTNING...18 PERCENT.  
* CWR...................20 PERCENT.  
   
FRIDAY
 
 
* SKY/WEATHER...........MOSTLY SUNNY. ISOLATED SHOWERS AND  
THUNDERSTORMS IN THE AFTERNOON.  
* MAX TEMPERATURE.......69-79 AT 5000 FEET...61-68 AT 7000 FEET.  
* 24 HR TREND.........1 DEGREE WARMER.  
* MIN HUMIDITY..........27-37 PERCENT AT 5000 FEET...29-39 PERCENT  
AT 7000 FEET.  
* 24 HR TREND.........2 PERCENT WETTER.  
* WIND (20 FT)  
* SLOPE/VALLEY.........SOUTHEAST WINDS 5 TO 15 MPH.  
* RIDGETOP.............SOUTHEAST 5 TO 15 MPH.  
* CHANCE OF LIGHTNING...15 PERCENT.  
* CWR...................10 PERCENT.  
 
   
FORECAST DAYS 3 THROUGH 7...
 
   
FRIDAY NIGHT
 
MOSTLY CLEAR. LOWS 50 TO 58. SOUTHEAST WINDS 5 TO  
15 MPH.    
SATURDAY
 
MOSTLY CLEAR. LOWS 54 TO 61. HIGHS 74 TO 84. SOUTH  
WINDS 5 TO 15 MPH.    
SUNDAY
 
MOSTLY CLOUDY. SCATTERED SHOWERS AND ISOLATED  
THUNDERSTORMS. LOWS 53 TO 59. HIGHS 74 TO 84. SOUTH WINDS 5 TO  
15 MPH.    
MONDAY
 
MOSTLY CLOUDY. SCATTERED SHOWERS AND ISOLATED  
THUNDERSTORMS. LOWS 43 TO 50. HIGHS 70 TO 80. SOUTHWEST WINDS  
5 TO 15 MPH.    
TUESDAY
 
COOLER. MOSTLY CLOUDY. NUMEROUS SHOWERS. LOWS 37 TO  
44. HIGHS 55 TO 65.    
WEDNESDAY
 
MOSTLY CLOUDY. NUMEROUS SHOWERS AND ISOLATED  
THUNDERSTORMS. HIGHS 45 TO 55.  
 

 
 
MTZ130-082230-  
NORTHERN ROSEBUD/NORTHERN TREASURE COUNTIES-  
249 AM MDT THU MAY 8 2025  
   
TODAY
 
 
* SKY/WEATHER...........SUNNY IN THE MORNING, THEN PARTLY SUNNY  
WITH ISOLATED SHOWERS AND THUNDERSTORMS IN THE AFTERNOON.  
* MAX TEMPERATURE.......79-84.  
* 24 HR TREND.........8 DEGREES WARMER.  
* MIN HUMIDITY..........21-26 PERCENT.  
* 24 HR TREND.........6 PERCENT DRIER.  
* WIND (20 FT)  
* PLAINS...............WEST WINDS 5 TO 15 MPH.  
* CHANCE OF LIGHTNING...16 PERCENT.  
* CWR...................10 PERCENT.  
   
TONIGHT
 
 
* SKY/WEATHER...........MOSTLY CLOUDY. SCATTERED RAIN SHOWERS AND  
ISOLATED THUNDERSTORMS IN THE EVENING, THEN ISOLATED RAIN SHOWERS  
OVERNIGHT.  
* MIN TEMPERATURE.......49-54.  
* 24 HR TREND.........2 DEGREES WARMER.  
* MAX HUMIDITY..........66-71 PERCENT.  
* 24 HR TREND.........3 PERCENT DRIER.  
* WIND (20 FT)  
* PLAINS...............NORTHWEST WINDS 5 TO 15 MPH.  
* CHANCE OF LIGHTNING...20 PERCENT.  
* CWR...................20 PERCENT.  
   
FRIDAY
 
 
* SKY/WEATHER...........SUNNY.  
* MAX TEMPERATURE.......78-83.  
* 24 HR TREND.........1 DEGREE COOLER.  
* MIN HUMIDITY..........22-27 PERCENT.  
* 24 HR TREND.........1 PERCENT WETTER.  
* WIND (20 FT)  
* PLAINS...............NORTHEAST WINDS 5 TO 10 MPH IN THE MORNING  
SHIFTING TO THE SOUTHEAST IN THE AFTERNOON.  
* CHANCE OF LIGHTNING...5 PERCENT.  
* CWR...................ZERO.  
 
   
FORECAST DAYS 3 THROUGH 7...
 
   
FRIDAY NIGHT
 
MOSTLY CLEAR. LOWS 51 TO 56. SOUTHEAST WINDS 5 TO  
10 MPH.    
SATURDAY
 
MOSTLY CLEAR. LOWS 55 TO 60. HIGHS 87 TO 92. SOUTH  
WINDS 5 TO 10 MPH.    
SUNDAY
 
MOSTLY CLOUDY. SCATTERED SHOWERS. LOWS 55 TO 60. HIGHS  
84 TO 89. SOUTH WINDS 5 TO 10 MPH.    
MONDAY
 
MOSTLY CLOUDY. SCATTERED SHOWERS. LOWS 49 TO 54. HIGHS  
80 TO 85. WEST WINDS 5 TO 15 MPH.    
TUESDAY
 
COOLER. MOSTLY CLOUDY. NUMEROUS SHOWERS. LOWS 44 TO  
49. HIGHS 66 TO 71.    
WEDNESDAY
 
MOSTLY CLOUDY. NUMEROUS SHOWERS. HIGHS 54 TO 59.  
 

 
 
MTZ131-082230-  
NORTHERN CHEYENNE INDIAN RESERVATION/ASHLAND RANGER DISTRICT  
CUSTER NATL FOREST-  
249 AM MDT THU MAY 8 2025  
   
TODAY
 
 
* SKY/WEATHER...........MOSTLY SUNNY. ISOLATED SHOWERS AND  
THUNDERSTORMS IN THE AFTERNOON.  
* MAX TEMPERATURE.......76-81.  
* 24 HR TREND.........7 DEGREES WARMER.  
* MIN HUMIDITY..........25-30 PERCENT.  
* 24 HR TREND.........8 PERCENT DRIER.  
* WIND (20 FT)  
* SLOPE/VALLEY.........SOUTHWEST WINDS 5 TO 15 MPH IN THE MORNING  
SHIFTING TO THE NORTHWEST 5 TO 10 MPH IN THE AFTERNOON.  
* RIDGETOP.............NORTHWEST 5 TO 15 MPH.  
* CHANCE OF LIGHTNING...15 PERCENT.  
* CWR...................10 PERCENT.  
   
TONIGHT
 
 
* SKY/WEATHER...........PARTLY CLOUDY. ISOLATED SHOWERS AND  
THUNDERSTORMS IN THE EVENING, THEN ISOLATED RAIN SHOWERS  
OVERNIGHT.  
* MIN TEMPERATURE.......47-52.  
* 24 HR TREND.........1 DEGREE WARMER.  
* MAX HUMIDITY..........71-76 PERCENT.  
* 24 HR TREND.........5 PERCENT WETTER.  
* WIND (20 FT)  
* SLOPE/VALLEY.........NORTHWEST WINDS 5 TO 10 MPH.  
* RIDGETOP.............NORTHWEST 5 TO 15 MPH.  
* CHANCE OF LIGHTNING...17 PERCENT.  
* CWR...................10 PERCENT.  
   
FRIDAY
 
 
* SKY/WEATHER...........SUNNY.  
* MAX TEMPERATURE.......76-81.  
* 24 HR TREND.........UNCHANGED.  
* MIN HUMIDITY..........26-31 PERCENT.  
* 24 HR TREND.........1 PERCENT WETTER.  
* WIND (20 FT)  
* SLOPE/VALLEY.........NORTH WINDS 5 TO 10 MPH IN THE MORNING  
SHIFTING TO THE SOUTHEAST IN THE AFTERNOON.  
* RIDGETOP.............SOUTHEAST 5 TO 15 MPH.  
* CHANCE OF LIGHTNING...10 PERCENT.  
* CWR...................ZERO.  
 
   
FORECAST DAYS 3 THROUGH 7...
 
   
FRIDAY NIGHT
 
MOSTLY CLEAR. LOWS 50 TO 55. SOUTH WINDS 5 TO  
15 MPH.    
SATURDAY
 
MOSTLY CLEAR. LOWS 52 TO 57. HIGHS 85 TO 90. SOUTH  
WINDS 5 TO 15 MPH.    
SUNDAY
 
PARTLY CLOUDY. ISOLATED SHOWERS. LOWS 54 TO 59. HIGHS  
85 TO 90. SOUTH WINDS 5 TO 15 MPH.    
MONDAY
 
PARTLY CLOUDY. SCATTERED SHOWERS. LOWS 47 TO 52. HIGHS  
82 TO 87. SOUTHWEST WINDS 5 TO 15 MPH.    
TUESDAY
 
COOLER. MOSTLY CLOUDY. NUMEROUS SHOWERS. LOWS 41 TO  
46. HIGHS 65 TO 70.    
WEDNESDAY
 
COOLER. MOSTLY CLOUDY. NUMEROUS SHOWERS. HIGHS 52 TO  
57.  
 

 
 
MTZ132-082230-  
CUSTER COUNTY-  
249 AM MDT THU MAY 8 2025  
   
TODAY
 
 
* SKY/WEATHER...........MOSTLY SUNNY. ISOLATED SHOWERS AND  
THUNDERSTORMS IN THE AFTERNOON.  
* MAX TEMPERATURE.......77-82.  
* 24 HR TREND.........9 DEGREES WARMER.  
* MIN HUMIDITY..........23-28 PERCENT.  
* 24 HR TREND.........15 PERCENT DRIER.  
* WIND (20 FT)  
* PLAINS...............SOUTHWEST WINDS 10 TO 20 MPH.  
* CHANCE OF LIGHTNING...17 PERCENT.  
* CWR...................LESS THAN 10 PERCENT.  
   
TONIGHT
 
 
* SKY/WEATHER...........PARTLY CLOUDY. SCATTERED RAIN SHOWERS AND  
ISOLATED THUNDERSTORMS IN THE EVENING, THEN ISOLATED RAIN SHOWERS  
OVERNIGHT.  
* MIN TEMPERATURE.......50-55.  
* 24 HR TREND.........1 DEGREE COOLER.  
* MAX HUMIDITY..........59-64 PERCENT.  
* 24 HR TREND.........1 PERCENT DRIER.  
* WIND (20 FT)  
* PLAINS...............WEST WINDS 5 TO 10 MPH.  
* CHANCE OF LIGHTNING...17 PERCENT.  
* CWR...................15 PERCENT.  
   
FRIDAY
 
 
* SKY/WEATHER...........SUNNY.  
* MAX TEMPERATURE.......75-80.  
* 24 HR TREND.........2 DEGREES COOLER.  
* MIN HUMIDITY..........22-27 PERCENT.  
* 24 HR TREND.........1 PERCENT DRIER.  
* WIND (20 FT)  
* PLAINS...............EAST WINDS 5 TO 15 MPH.  
* CHANCE OF LIGHTNING...5 PERCENT.  
* CWR...................ZERO.  
 
   
FORECAST DAYS 3 THROUGH 7...
 
   
FRIDAY NIGHT
 
MOSTLY CLEAR. LOWS 52 TO 57. SOUTHEAST WINDS 5 TO  
15 MPH.    
SATURDAY
 
MOSTLY CLEAR. LOWS 58 TO 63. HIGHS 84 TO 89. SOUTH  
WINDS 5 TO 15 MPH.    
SUNDAY
 
PARTLY CLOUDY. SCATTERED SHOWERS. LOWS 55 TO 60. HIGHS  
85 TO 90. SOUTH WINDS 5 TO 15 MPH.    
MONDAY
 
PARTLY CLOUDY. SCATTERED SHOWERS. LOWS 50 TO 55. HIGHS  
82 TO 87. SOUTHWEST WINDS 5 TO 15 MPH.    
TUESDAY
 
NOT AS WARM. MOSTLY CLOUDY. SCATTERED SHOWERS. LOWS  
44 TO 49. HIGHS 68 TO 73.    
WEDNESDAY
 
COOLER. PARTLY SUNNY. SCATTERED SHOWERS. HIGHS 54 TO  
59.  
 

 
 
MTZ133-082230-  
SIOUX RANGER DISTRICT CUSTER NATIONAL FOREST-  
249 AM MDT THU MAY 8 2025  
   
TODAY
 
 
* SKY/WEATHER...........MOSTLY SUNNY. ISOLATED SHOWERS AND  
THUNDERSTORMS IN THE AFTERNOON.  
* MAX TEMPERATURE.......76-81.  
* 24 HR TREND.........10 DEGREES WARMER.  
* MIN HUMIDITY..........26-31 PERCENT.  
* 24 HR TREND.........17 PERCENT DRIER.  
* WIND (20 FT)  
* PLAINS...............SOUTH WINDS 10 TO 20 MPH.  
* CHANCE OF LIGHTNING...15 PERCENT.  
* CWR...................LESS THAN 10 PERCENT.  
   
TONIGHT
 
 
* SKY/WEATHER...........PARTLY CLOUDY. ISOLATED SHOWERS AND  
THUNDERSTORMS IN THE EVENING, THEN ISOLATED RAIN SHOWERS  
OVERNIGHT.  
* MIN TEMPERATURE.......50-55.  
* 24 HR TREND.........5 DEGREES WARMER.  
* MAX HUMIDITY..........68-73 PERCENT.  
* 24 HR TREND.........5 PERCENT DRIER.  
* WIND (20 FT)  
* PLAINS...............NORTHWEST WINDS 5 TO 15 MPH.  
* CHANCE OF LIGHTNING...15 PERCENT.  
* CWR...................15 PERCENT.  
   
FRIDAY
 
 
* SKY/WEATHER...........SUNNY.  
* MAX TEMPERATURE.......74-79.  
* 24 HR TREND.........2 DEGREES COOLER.  
* MIN HUMIDITY..........25-30 PERCENT.  
* 24 HR TREND.........1 PERCENT DRIER.  
* WIND (20 FT)  
* PLAINS...............NORTHEAST WINDS 5 TO 15 MPH.  
* CHANCE OF LIGHTNING...7 PERCENT.  
* CWR...................ZERO.  
 
   
FORECAST DAYS 3 THROUGH 7...
 
   
FRIDAY NIGHT
 
MOSTLY CLEAR. LOWS 49 TO 54. SOUTHEAST WINDS 5 TO  
15 MPH.    
SATURDAY
 
MOSTLY CLEAR. LOWS 55 TO 60. HIGHS 83 TO 88. SOUTH  
WINDS 5 TO 15 MPH.    
SUNDAY
 
PARTLY CLOUDY. ISOLATED SHOWERS. LOWS 58 TO 63. HIGHS  
86 TO 91. SOUTHWEST WINDS 5 TO 15 MPH.    
MONDAY
 
PARTLY CLOUDY. SCATTERED SHOWERS. LOWS 51 TO 56. HIGHS  
84 TO 89. SOUTHWEST WINDS 10 TO 20 MPH WITH GUSTS TO AROUND  
30 MPH.    
TUESDAY
 
NOT AS WARM. PARTLY CLOUDY. SCATTERED SHOWERS. LOWS  
44 TO 49. HIGHS 71 TO 76.    
WEDNESDAY
 
COOLER. PARTLY SUNNY. SCATTERED SHOWERS. HIGHS 54 TO  
59.  
 

 
 
WYZ274-082230-  
SHERIDAN COUNTY-  
249 AM MDT THU MAY 8 2025  
   
TODAY
 
 
* SKY/WEATHER...........SUNNY IN THE MORNING, THEN PARTLY SUNNY  
WITH ISOLATED SHOWERS AND THUNDERSTORMS IN THE AFTERNOON.  
* MAX TEMPERATURE.......74-79.  
* 24 HR TREND.........4 DEGREES WARMER.  
* MIN HUMIDITY..........31-36 PERCENT.  
* 24 HR TREND.........2 PERCENT DRIER.  
* WIND (20 FT)  
* SLOPE/VALLEY.........EAST WINDS 5 TO 10 MPH IN THE MORNING  
SHIFTING TO THE NORTHWEST IN THE AFTERNOON.  
* RIDGETOP.............NORTH 5 TO 10 MPH.  
* CHANCE OF LIGHTNING...21 PERCENT.  
* CWR...................10 PERCENT.  
   
TONIGHT
 
 
* SKY/WEATHER...........PARTLY CLOUDY. SCATTERED RAIN SHOWERS AND  
ISOLATED THUNDERSTORMS IN THE EVENING, THEN ISOLATED RAIN SHOWERS  
OVERNIGHT.  
* MIN TEMPERATURE.......43-48.  
* 24 HR TREND.........3 DEGREES WARMER.  
* MAX HUMIDITY..........79-84 PERCENT.  
* 24 HR TREND.........2 PERCENT WETTER.  
* WIND (20 FT)  
* SLOPE/VALLEY.........WEST WINDS 5 TO 15 MPH.  
* RIDGETOP.............WEST 5 TO 15 MPH.  
* CHANCE OF LIGHTNING...17 PERCENT.  
* CWR...................15 PERCENT.  
   
FRIDAY
 
 
* SKY/WEATHER...........MOSTLY SUNNY. ISOLATED SHOWERS AND  
THUNDERSTORMS IN THE AFTERNOON.  
* MAX TEMPERATURE.......73-78.  
* 24 HR TREND.........1 DEGREE COOLER.  
* MIN HUMIDITY..........37-42 PERCENT.  
* 24 HR TREND.........6 PERCENT WETTER.  
* WIND (20 FT)  
* SLOPE/VALLEY.........NORTH WINDS 5 TO 10 MPH IN THE MORNING  
SHIFTING TO THE SOUTHEAST IN THE AFTERNOON.  
* RIDGETOP.............SOUTHEAST 5 TO 15 MPH.  
* CHANCE OF LIGHTNING...21 PERCENT.  
* CWR...................10 PERCENT.  
 
   
FORECAST DAYS 3 THROUGH 7...
 
   
FRIDAY NIGHT
 
MOSTLY CLEAR. LOWS 44 TO 49. SOUTH WINDS 5 TO  
10 MPH.    
SATURDAY
 
MOSTLY CLEAR. LOWS 48 TO 53. HIGHS 82 TO 87. SOUTH  
WINDS 5 TO 10 MPH.    
SUNDAY
 
MOSTLY CLOUDY. ISOLATED SHOWERS. LOWS 51 TO 56. HIGHS  
83 TO 88. SOUTHWEST WINDS 5 TO 15 MPH.    
MONDAY
 
MOSTLY CLOUDY. SCATTERED SHOWERS AND ISOLATED  
THUNDERSTORMS. LOWS 44 TO 49. HIGHS 80 TO 85. SOUTHWEST WINDS  
5 TO 15 MPH.    
TUESDAY
 
COOLER. MOSTLY CLOUDY. NUMEROUS SHOWERS AND ISOLATED  
THUNDERSTORMS. LOWS 37 TO 42. HIGHS 64 TO 69.    
WEDNESDAY
 
MOSTLY CLOUDY. NUMEROUS SHOWERS. HIGHS 52 TO 57.  
 

 
 
WYZ284-082230-  
BIGHORN NATIONAL FOREST-  
249 AM MDT THU MAY 8 2025  
   
TODAY
 
 
* SKY/WEATHER...........SUNNY IN THE MORNING, THEN MOSTLY CLOUDY  
WITH SCATTERED RAIN SHOWERS AND ISOLATED THUNDERSTORMS IN THE  
AFTERNOON.  
* MAX TEMPERATURE.......58-63.  
* 24 HR TREND.........8 DEGREES WARMER.  
* MIN HUMIDITY..........33-38 PERCENT.  
* 24 HR TREND.........6 PERCENT DRIER.  
* WIND (20 FT)  
* AT BURGESS JCT.......WEST WINDS 5 TO 15 MPH IN THE MORNING  
SHIFTING TO THE NORTH IN THE AFTERNOON.  
* CHANCE OF LIGHTNING...23 PERCENT.  
* CWR...................30 PERCENT.  
   
TONIGHT
 
 
* SKY/WEATHER...........MOSTLY CLOUDY. SCATTERED RAIN SHOWERS AND  
ISOLATED THUNDERSTORMS IN THE EVENING, THEN SCATTERED RAIN  
SHOWERS OVERNIGHT.  
* MIN TEMPERATURE.......36-41.  
* 24 HR TREND.........UNCHANGED.  
* MAX HUMIDITY..........73-78 PERCENT.  
* 24 HR TREND.........4 PERCENT DRIER.  
* WIND (20 FT)  
* AT BURGESS JCT.......SOUTHWEST WINDS 5 TO 10 MPH.  
* CHANCE OF LIGHTNING...19 PERCENT.  
* CWR...................20 PERCENT.  
   
FRIDAY
 
 
* SKY/WEATHER...........MOSTLY SUNNY WITH ISOLATED RAIN SHOWERS  
IN THE MORNING, THEN PARTLY SUNNY WITH SCATTERED SHOWERS AND  
THUNDERSTORMS IN THE AFTERNOON.  
* MAX TEMPERATURE.......59-64.  
* 24 HR TREND.........1 DEGREE WARMER.  
* MIN HUMIDITY..........36-41 PERCENT.  
* 24 HR TREND.........3 PERCENT WETTER.  
* WIND (20 FT)  
* AT BURGESS JCT.......SOUTH WINDS 5 TO 15 MPH.  
* CHANCE OF LIGHTNING...26 PERCENT.  
* CWR...................25 PERCENT.  
 
   
FORECAST DAYS 3 THROUGH 7...
 
   
FRIDAY NIGHT
 
MOSTLY CLEAR. LOWS 41 TO 46. SOUTH WINDS 5 TO  
15 MPH.    
SATURDAY
 
MOSTLY CLEAR. LOWS 46 TO 51. HIGHS 67 TO 72.  
SOUTHWEST WINDS 10 TO 20 MPH.    
SUNDAY
 
MOSTLY CLOUDY. SCATTERED SHOWERS AND ISOLATED  
THUNDERSTORMS. LOWS 44 TO 49. HIGHS 67 TO 72. SOUTHWEST WINDS  
15 TO 25 MPH WITH GUSTS TO AROUND 35 MPH.    
MONDAY
 
MOSTLY CLOUDY. SCATTERED SHOWERS AND ISOLATED  
THUNDERSTORMS. LOWS 36 TO 41. HIGHS 63 TO 68. SOUTHWEST WINDS  
15 TO 25 MPH WITH GUSTS TO AROUND 40 MPH.    
TUESDAY
 
COOLER. MOSTLY CLOUDY. NUMEROUS SHOWERS, SNOW SHOWERS  
AND ISOLATED THUNDERSTORMS. LOWS 29 TO 34. HIGHS 51 TO 56.    
WEDNESDAY
 
COLDER. MOSTLY CLOUDY. SNOW SHOWERS AND ISOLATED  
THUNDERSTORMS. HIGHS 38 TO 43.  
 

 
 
WEATHER.GOV/BILLINGS  
 
CLICK HERE TO GO TO PREVIOUS BULLETINS.

The Nexlab MT Page
The Nexlab WY Page Main Text Page