355
FNUS55 KBYZ 170750
FWFBYZ
FIRE WEATHER PLANNING FORECAST FOR SCEN AND SERN MONTANA
NATIONAL WEATHER SERVICE BILLINGS MT
150 AM MDT WED SEP 17 2025
DISCUSSION
DRIER AND WARMER CONDITIONS FOR CENTRAL AND WESTERN PORTIONS OF
THE DISTRICT TODAY. COOLER AND WETTER CONDITIONS EXPECTED FOR THE
EAST, WITH GOOD WETTING RAIN CHANCES (OVER 70 PERCENT) ALONG AND
SOUTH OF A BAKER TO FORT SMITH LINE. A WARMING AND DRYING TREND
STARTS TOMORROW AND LAST INTO EARLY NEXT WEEK. JUST A SLIGHT
CHANCE FOR A LIGHT SHOWER OR WEAK THUNDERSTORM SUNDAY
AFTERNOON/EVENING BREAKS THE DRYING TREND. CHAMBERS
MTZ123-172215-
GALLATIN NATIONAL FOREST-
150 AM MDT WED SEP 17 2025
TODAY
* SKY/WEATHER...........SUNNY. PATCHY FOG IN THE MORNING.
* MAX TEMPERATURE.......64-74 AT 5000 FEET...54-64 AT 7000 FEET.
* 24 HR TREND.........7 DEGREES WARMER.
* MIN HUMIDITY..........39-49 PERCENT AT 5000 FEET...42-52 PERCENT
AT 7000 FEET.
* 24 HR TREND.........20 PERCENT DRIER.
* WIND (20 FT)
* SLOPE/VALLEY.........LIGHT WINDS IN THE MORNING BECOMING NORTH 5
TO 10 MPH IN THE AFTERNOON.
* RIDGETOP.............EAST 5 TO 15 MPH.
* CHANCE OF LIGHTNING...0 PERCENT.
* CWR...................ZERO.
TONIGHT
* SKY/WEATHER...........MOSTLY CLEAR.
* MIN TEMPERATURE.......40-50 AT 5000 FEET...35-45 AT 7000 FEET.
* 24 HR TREND.........3 DEGREES WARMER.
* MAX HUMIDITY..........76-86 PERCENT AT 5000 FEET...72-82 PERCENT
AT 7000 FEET.
* 24 HR TREND.........32 PERCENT DRIER.
* WIND (20 FT)
* SLOPE/VALLEY.........SOUTHEAST WINDS 5 TO 10 MPH.
* RIDGETOP.............NORTHWEST 5 TO 10 MPH.
* CHANCE OF LIGHTNING...0 PERCENT.
* CWR...................ZERO.
THURSDAY
* SKY/WEATHER...........SUNNY.
* MAX TEMPERATURE.......71-81 AT 5000 FEET...59-69 AT 7000 FEET.
* 24 HR TREND.........6 DEGREES WARMER.
* MIN HUMIDITY..........24-34 PERCENT AT 5000 FEET...27-37 PERCENT
AT 7000 FEET.
* 24 HR TREND.........15 PERCENT DRIER.
* WIND (20 FT)
* SLOPE/VALLEY.........SOUTH WINDS 5 TO 10 MPH IN THE MORNING
SHIFTING TO THE NORTHWEST IN THE AFTERNOON.
* RIDGETOP.............WEST 5 TO 10 MPH.
* CHANCE OF LIGHTNING...0 PERCENT.
* CWR...................ZERO.
FORECAST DAYS 3 THROUGH 7...
THURSDAY NIGHT
MOSTLY CLEAR. LOWS 41 TO 51. SOUTH WINDS 5 TO
10 MPH.
FRIDAY
PARTLY CLOUDY. LOWS 44 TO 54. HIGHS 73 TO 82. SOUTHWEST
WINDS 5 TO 10 MPH.
SATURDAY
MOSTLY CLEAR. LOWS 45 TO 55. HIGHS 73 TO 82.
SOUTHWEST WINDS 5 TO 10 MPH.
SUNDAY
PARTLY CLOUDY. ISOLATED SHOWERS AND THUNDERSTORMS. LOWS
40 TO 50. HIGHS 71 TO 79. SOUTHWEST WINDS 5 TO 15 MPH.
MONDAY
MOSTLY CLEAR. LOWS 44 TO 54. HIGHS 70 TO 79.
TUESDAY
SUNNY. HIGHS 75 TO 84.
MTZ124-172215-
WHEATLAND COUNTY/SWEET GRASS COUNTY-
150 AM MDT WED SEP 17 2025
TODAY
* SKY/WEATHER...........SUNNY. AREAS OF FOG IN THE MORNING.
* MAX TEMPERATURE.......70-75.
* 24 HR TREND.........7 DEGREES WARMER.
* MIN HUMIDITY..........38-43 PERCENT.
* 24 HR TREND.........14 PERCENT DRIER.
* WIND (20 FT)
* PLAINS...............WEST WINDS 5 TO 10 MPH IN THE MORNING
SHIFTING TO THE SOUTHEAST IN THE AFTERNOON.
* CHANCE OF LIGHTNING...5 PERCENT.
* CWR...................ZERO.
TONIGHT
* SKY/WEATHER...........MOSTLY CLEAR. AREAS OF FOG OVERNIGHT.
* MIN TEMPERATURE.......41-46.
* 24 HR TREND.........1 DEGREE COOLER.
* MAX HUMIDITY..........89-94 PERCENT.
* 24 HR TREND.........5 PERCENT DRIER.
* WIND (20 FT)
* PLAINS...............SOUTHEAST WINDS 5 TO 10 MPH IN THE EVENING
SHIFTING TO THE WEST OVERNIGHT.
* CHANCE OF LIGHTNING...1 PERCENT.
* CWR...................ZERO.
THURSDAY
* SKY/WEATHER...........SUNNY. PATCHY FOG IN THE MORNING.
* MAX TEMPERATURE.......74-79.
* 24 HR TREND.........4 DEGREES WARMER.
* MIN HUMIDITY..........30-35 PERCENT.
* 24 HR TREND.........8 PERCENT DRIER.
* WIND (20 FT)
* PLAINS...............SOUTHWEST WINDS 5 TO 10 MPH IN THE MORNING
SHIFTING TO THE SOUTHEAST IN THE AFTERNOON.
* CHANCE OF LIGHTNING...1 PERCENT.
* CWR...................ZERO.
FORECAST DAYS 3 THROUGH 7...
THURSDAY NIGHT
MOSTLY CLEAR. PATCHY FOG. LOWS 41 TO 46.
SOUTHEAST WINDS 5 TO 15 MPH.
FRIDAY
PARTLY CLOUDY. LOWS 44 TO 49. HIGHS 76 TO 81. SOUTHWEST
WINDS 5 TO 10 MPH.
SATURDAY
MOSTLY CLEAR. LOWS 45 TO 50. HIGHS 79 TO 84. WEST
WINDS 5 TO 15 MPH.
SUNDAY
PARTLY CLOUDY. LOWS 42 TO 47. HIGHS 77 TO 82. WEST
WINDS 15 TO 25 MPH WITH GUSTS TO AROUND 30 MPH.
MONDAY
MOSTLY CLEAR. LOWS 45 TO 50. HIGHS 75 TO 80.
TUESDAY
SUNNY. HIGHS 80 TO 85.
MTZ125-172215-
STILLWATER COUNTY-
150 AM MDT WED SEP 17 2025
TODAY
* SKY/WEATHER...........PARTLY SUNNY WITH ISOLATED RAIN SHOWERS IN
THE MORNING, THEN SUNNY IN THE AFTERNOON.
* MAX TEMPERATURE.......69-74.
* 24 HR TREND.........10 DEGREES WARMER.
* MIN HUMIDITY..........44-49 PERCENT.
* 24 HR TREND.........23 PERCENT DRIER.
* WIND (20 FT)
* PLAINS...............WEST WINDS 5 TO 10 MPH IN THE MORNING
SHIFTING TO THE NORTH IN THE AFTERNOON.
* CHANCE OF LIGHTNING...11 PERCENT.
* CWR...................ZERO.
TONIGHT
* SKY/WEATHER...........MOSTLY CLEAR.
* MIN TEMPERATURE.......44-49.
* 24 HR TREND.........1 DEGREE COOLER.
* MAX HUMIDITY..........73-78 PERCENT.
* 24 HR TREND.........16 PERCENT DRIER.
* WIND (20 FT)
* PLAINS...............SOUTHWEST WINDS 5 TO 10 MPH.
* CHANCE OF LIGHTNING...2 PERCENT.
* CWR...................ZERO.
THURSDAY
* SKY/WEATHER...........SUNNY.
* MAX TEMPERATURE.......74-79.
* 24 HR TREND.........5 DEGREES WARMER.
* MIN HUMIDITY..........30-35 PERCENT.
* 24 HR TREND.........14 PERCENT DRIER.
* WIND (20 FT)
* PLAINS...............SOUTH WINDS 5 TO 10 MPH IN THE MORNING
SHIFTING TO THE EAST IN THE AFTERNOON.
* CHANCE OF LIGHTNING...0 PERCENT.
* CWR...................ZERO.
FORECAST DAYS 3 THROUGH 7...
THURSDAY NIGHT
MOSTLY CLEAR. LOWS 45 TO 50. SOUTH WINDS 5 TO
10 MPH.
FRIDAY
PARTLY CLOUDY. LOWS 48 TO 53. HIGHS 77 TO 82. SOUTH
WINDS 5 TO 10 MPH.
SATURDAY
MOSTLY CLEAR. LOWS 50 TO 55. HIGHS 80 TO 85. WEST
WINDS 5 TO 15 MPH.
SUNDAY
PARTLY CLOUDY. ISOLATED SHOWERS. LOWS 46 TO 51. HIGHS
79 TO 84. WEST WINDS 5 TO 15 MPH.
MONDAY
MOSTLY CLEAR. LOWS 48 TO 53. HIGHS 76 TO 81.
TUESDAY
SUNNY. HIGHS 80 TO 85.
MTZ126-172215-
BEARTOOTH RANGER DISTRICT CUSTER NATIONAL FOREST-
150 AM MDT WED SEP 17 2025
TODAY
* SKY/WEATHER...........MOSTLY SUNNY WITH ISOLATED RAIN SHOWERS.
* MAX TEMPERATURE.......62-70 AT 5000 FEET...54-64 AT 7000 FEET.
* 24 HR TREND.........8 DEGREES WARMER.
* MIN HUMIDITY..........50-60 PERCENT AT 5000 FEET...55-65 PERCENT
AT 7000 FEET.
* 24 HR TREND.........9 PERCENT DRIER.
* WIND (20 FT)
* SLOPE/VALLEY.........NORTH WINDS 5 TO 10 MPH.
* RIDGETOP.............NORTHEAST 5 TO 10 MPH.
* CHANCE OF LIGHTNING...12 PERCENT.
* CWR...................10 PERCENT.
TONIGHT
* SKY/WEATHER...........MOSTLY CLEAR.
* MIN TEMPERATURE.......46-51 AT 5000 FEET...38-48 AT 7000 FEET.
* 24 HR TREND.........1 DEGREE WARMER.
* MAX HUMIDITY..........71-76 PERCENT.
* 24 HR TREND.........22 PERCENT DRIER.
* WIND (20 FT)
* SLOPE/VALLEY.........WEST WINDS 5 TO 10 MPH.
* RIDGETOP.............LIGHT WINDS.
* CHANCE OF LIGHTNING...3 PERCENT.
* CWR...................ZERO.
THURSDAY
* SKY/WEATHER...........SUNNY.
* MAX TEMPERATURE.......65-75 AT 5000 FEET...59-69 AT 7000 FEET.
* 24 HR TREND.........6 DEGREES WARMER.
* MIN HUMIDITY..........32-42 PERCENT AT 5000 FEET...37-47 PERCENT
AT 7000 FEET.
* 24 HR TREND.........20 PERCENT DRIER.
* WIND (20 FT)
* SLOPE/VALLEY.........SOUTHWEST WINDS 5 TO 10 MPH IN THE MORNING
SHIFTING TO THE EAST IN THE AFTERNOON.
* RIDGETOP.............WEST 5 TO 10 MPH.
* CHANCE OF LIGHTNING...1 PERCENT.
* CWR...................ZERO.
FORECAST DAYS 3 THROUGH 7...
THURSDAY NIGHT
MOSTLY CLEAR. LOWS 46 TO 53. SOUTHWEST WINDS
5 TO 10 MPH.
FRIDAY
MOSTLY CLOUDY. LOWS 50 TO 57. HIGHS 69 TO 78. SOUTHWEST
WINDS 5 TO 15 MPH.
SATURDAY
PARTLY CLOUDY. LOWS 50 TO 57. HIGHS 71 TO 81. WEST
WINDS 5 TO 15 MPH.
SUNDAY
PARTLY CLOUDY. ISOLATED SHOWERS. LOWS 47 TO 53. HIGHS
72 TO 81. WEST WINDS 5 TO 15 MPH.
MONDAY
MOSTLY CLEAR. LOWS 49 TO 56. HIGHS 68 TO 77.
TUESDAY
SUNNY. HIGHS 73 TO 82.
MTZ127-172215-
GOLDEN VALLEY COUNTY/MUSSELSHELL COUNTY-
150 AM MDT WED SEP 17 2025
TODAY
* SKY/WEATHER...........MOSTLY SUNNY.
* MAX TEMPERATURE.......69-74.
* 24 HR TREND.........11 DEGREES WARMER.
* MIN HUMIDITY..........48-53 PERCENT.
* 24 HR TREND.........24 PERCENT DRIER.
* WIND (20 FT)
* PLAINS...............NORTH WINDS 5 TO 10 MPH.
* CHANCE OF LIGHTNING...8 PERCENT.
* CWR...................ZERO.
TONIGHT
* SKY/WEATHER...........MOSTLY CLEAR.
* MIN TEMPERATURE.......51-56.
* 24 HR TREND.........UNCHANGED.
* MAX HUMIDITY..........72-77 PERCENT.
* 24 HR TREND.........14 PERCENT DRIER.
* WIND (20 FT)
* PLAINS...............NORTHEAST WINDS 5 TO 10 MPH IN THE EVENING
BECOMING LIGHT OVERNIGHT.
* CHANCE OF LIGHTNING...0 PERCENT.
* CWR...................ZERO.
THURSDAY
* SKY/WEATHER...........SUNNY.
* MAX TEMPERATURE.......70-75.
* 24 HR TREND.........1 DEGREE WARMER.
* MIN HUMIDITY..........39-44 PERCENT.
* 24 HR TREND.........9 PERCENT DRIER.
* WIND (20 FT)
* PLAINS...............SOUTHEAST WINDS 5 TO 10 MPH.
* CHANCE OF LIGHTNING...2 PERCENT.
* CWR...................ZERO.
FORECAST DAYS 3 THROUGH 7...
THURSDAY NIGHT
MOSTLY CLEAR. LOWS 49 TO 54. EAST WINDS 5 TO
10 MPH.
FRIDAY
PARTLY CLOUDY. LOWS 52 TO 57. HIGHS 72 TO 77. SOUTHEAST
WINDS 5 TO 10 MPH.
SATURDAY
MOSTLY CLEAR. LOWS 54 TO 59. HIGHS 77 TO 82. WEST
WINDS 5 TO 10 MPH.
SUNDAY
PARTLY CLOUDY. LOWS 50 TO 55. HIGHS 78 TO 83. WEST
WINDS 5 TO 15 MPH.
MONDAY
MOSTLY CLEAR. LOWS 51 TO 56. HIGHS 73 TO 78.
TUESDAY
SUNNY. HIGHS 79 TO 84.
MTZ128-172215-
YELLOWSTONE COUNTY-
150 AM MDT WED SEP 17 2025
TODAY
* SKY/WEATHER...........AREAS OF FOG IN THE MORNING. MOSTLY SUNNY
WITH ISOLATED RAIN SHOWERS.
* MAX TEMPERATURE.......71-76.
* 24 HR TREND.........5 DEGREES WARMER.
* MIN HUMIDITY..........49-54 PERCENT.
* 24 HR TREND.........6 PERCENT DRIER.
* WIND (20 FT)
* PLAINS...............WEST WINDS 5 TO 10 MPH IN THE MORNING
SHIFTING TO THE NORTH IN THE AFTERNOON.
* CHANCE OF LIGHTNING...9 PERCENT.
* CWR...................10 PERCENT.
TONIGHT
* SKY/WEATHER...........MOSTLY CLEAR.
* MIN TEMPERATURE.......49-54.
* 24 HR TREND.........1 DEGREE COOLER.
* MAX HUMIDITY..........82-87 PERCENT.
* 24 HR TREND.........9 PERCENT DRIER.
* WIND (20 FT)
* PLAINS...............NORTH WINDS 5 TO 10 MPH.
* CHANCE OF LIGHTNING...3 PERCENT.
* CWR...................ZERO.
THURSDAY
* SKY/WEATHER...........SUNNY.
* MAX TEMPERATURE.......75-80.
* 24 HR TREND.........4 DEGREES WARMER.
* MIN HUMIDITY..........36-41 PERCENT.
* 24 HR TREND.........13 PERCENT DRIER.
* WIND (20 FT)
* PLAINS...............SOUTHWEST WINDS 5 TO 10 MPH IN THE MORNING
SHIFTING TO THE SOUTHEAST IN THE AFTERNOON.
* CHANCE OF LIGHTNING...0 PERCENT.
* CWR...................ZERO.
FORECAST DAYS 3 THROUGH 7...
THURSDAY NIGHT
MOSTLY CLEAR. LOWS 47 TO 52. EAST WINDS 5 TO
10 MPH.
FRIDAY
PARTLY CLOUDY. LOWS 50 TO 55. HIGHS 77 TO 82. SOUTH
WINDS 5 TO 10 MPH.
SATURDAY
MOSTLY CLEAR. LOWS 53 TO 58. HIGHS 81 TO 86. WEST
WINDS 5 TO 10 MPH.
SUNDAY
PARTLY CLOUDY. LOWS 50 TO 55. HIGHS 82 TO 87. WEST
WINDS 5 TO 15 MPH.
MONDAY
MOSTLY CLEAR. LOWS 50 TO 55. HIGHS 78 TO 83.
TUESDAY
SUNNY. HIGHS 83 TO 88.
MTZ129-172215-
CROW INDIAN RESERVATION/BIGHORN CANYON REC AREA-
150 AM MDT WED SEP 17 2025
TODAY
* SKY/WEATHER...........MOSTLY CLOUDY. PATCHY FOG IN THE MORNING.
SCATTERED RAIN SHOWERS IN THE MORNING, THEN SCATTERED RAIN
SHOWERS AND ISOLATED THUNDERSTORMS IN THE AFTERNOON.
* MAX TEMPERATURE.......61-71 AT 5000 FEET...52-60 AT 7000 FEET.
* 24 HR TREND.........2 DEGREES WARMER.
* MIN HUMIDITY..........54-64 PERCENT AT 5000 FEET...66-76 PERCENT
AT 7000 FEET.
* 24 HR TREND.........10 PERCENT WETTER.
* WIND (20 FT)
* SLOPE/VALLEY.........NORTHWEST WINDS 5 TO 15 MPH.
* RIDGETOP.............NORTHEAST 5 TO 15 MPH.
* CHANCE OF LIGHTNING...23 PERCENT.
* CWR...................30 PERCENT.
TONIGHT
* SKY/WEATHER...........PARTLY CLOUDY. ISOLATED SHOWERS AND
THUNDERSTORMS IN THE EVENING.
* MIN TEMPERATURE.......46-52 AT 5000 FEET...43-48 AT 7000 FEET.
* 24 HR TREND.........UNCHANGED.
* MAX HUMIDITY..........78-83 PERCENT.
* 24 HR TREND.........20 PERCENT DRIER.
* WIND (20 FT)
* SLOPE/VALLEY.........NORTHEAST WINDS 5 TO 10 MPH IN THE EVENING
SHIFTING TO THE SOUTHEAST OVERNIGHT.
* RIDGETOP.............NORTH 5 TO 10 MPH.
* CHANCE OF LIGHTNING...15 PERCENT.
* CWR...................20 PERCENT.
THURSDAY
* SKY/WEATHER...........SUNNY.
* MAX TEMPERATURE.......65-75 AT 5000 FEET...57-65 AT 7000 FEET.
* 24 HR TREND.........5 DEGREES WARMER.
* MIN HUMIDITY..........33-43 PERCENT AT 5000 FEET...45-55 PERCENT
AT 7000 FEET.
* 24 HR TREND.........24 PERCENT DRIER.
* WIND (20 FT)
* SLOPE/VALLEY.........SOUTHEAST WINDS 5 TO 10 MPH.
* RIDGETOP.............WEST 5 TO 10 MPH.
* CHANCE OF LIGHTNING...1 PERCENT.
* CWR...................ZERO.
FORECAST DAYS 3 THROUGH 7...
THURSDAY NIGHT
MOSTLY CLEAR. LOWS 46 TO 53. SOUTHEAST WINDS
5 TO 10 MPH.
FRIDAY
PARTLY CLOUDY. LOWS 50 TO 57. HIGHS 69 TO 79. SOUTHEAST
WINDS 5 TO 10 MPH.
SATURDAY
MOSTLY CLEAR. LOWS 53 TO 58. HIGHS 71 TO 81.
SOUTHWEST WINDS 5 TO 10 MPH.
SUNDAY
PARTLY CLOUDY. ISOLATED SHOWERS. LOWS 49 TO 54. HIGHS
72 TO 82. WEST WINDS 5 TO 15 MPH.
MONDAY
MOSTLY CLEAR. LOWS 50 TO 57. HIGHS 68 TO 78.
TUESDAY
SUNNY. HIGHS 73 TO 83.
MTZ130-172215-
NORTHERN ROSEBUD/NORTHERN TREASURE COUNTIES-
150 AM MDT WED SEP 17 2025
TODAY
* SKY/WEATHER...........MOSTLY SUNNY. PATCHY FOG IN THE MORNING.
ISOLATED RAIN SHOWERS IN THE MORNING, THEN SCATTERED RAIN SHOWERS
AND ISOLATED THUNDERSTORMS IN THE AFTERNOON.
* MAX TEMPERATURE.......74-79.
* 24 HR TREND.........3 DEGREES WARMER.
* MIN HUMIDITY..........43-48 PERCENT.
* 24 HR TREND.........7 PERCENT WETTER.
* WIND (20 FT)
* PLAINS...............NORTH WINDS 5 TO 10 MPH.
* CHANCE OF LIGHTNING...19 PERCENT.
* CWR...................ZERO.
TONIGHT
* SKY/WEATHER...........PARTLY CLOUDY.
* MIN TEMPERATURE.......49-54.
* 24 HR TREND.........3 DEGREES COOLER.
* MAX HUMIDITY..........91-96 PERCENT.
* 24 HR TREND.........1 PERCENT DRIER.
* WIND (20 FT)
* PLAINS...............NORTHEAST WINDS 5 TO 10 MPH IN THE EVENING
BECOMING LIGHT OVERNIGHT.
* CHANCE OF LIGHTNING...7 PERCENT.
* CWR...................ZERO.
THURSDAY
* SKY/WEATHER...........SUNNY. PATCHY FOG IN THE MORNING.
* MAX TEMPERATURE.......73-78.
* 24 HR TREND.........1 DEGREE COOLER.
* MIN HUMIDITY..........40-45 PERCENT.
* 24 HR TREND.........3 PERCENT DRIER.
* WIND (20 FT)
* PLAINS...............EAST WINDS 5 TO 10 MPH.
* CHANCE OF LIGHTNING...2 PERCENT.
* CWR...................ZERO.
FORECAST DAYS 3 THROUGH 7...
THURSDAY NIGHT
PARTLY CLOUDY. LOWS 47 TO 52. EAST WINDS 5 TO
10 MPH.
FRIDAY
PARTLY CLOUDY. LOWS 50 TO 55. HIGHS 75 TO 80. EAST
WINDS 5 TO 10 MPH.
SATURDAY
MOSTLY CLEAR. LOWS 52 TO 57. HIGHS 78 TO 83.
SOUTHWEST WINDS 5 TO 10 MPH.
SUNDAY
MOSTLY CLEAR. LOWS 50 TO 55. HIGHS 82 TO 87. WEST WINDS
5 TO 15 MPH.
MONDAY
MOSTLY CLEAR. LOWS 49 TO 54. HIGHS 76 TO 81.
TUESDAY
SUNNY. HIGHS 82 TO 87.
MTZ131-172215-
NORTHERN CHEYENNE INDIAN RESERVATION/ASHLAND RANGER DISTRICT
CUSTER NATL FOREST-
150 AM MDT WED SEP 17 2025
TODAY
* SKY/WEATHER...........MOSTLY CLOUDY. AREAS OF FOG IN THE MORNING.
SCATTERED RAIN SHOWERS IN THE MORNING, THEN NUMEROUS RAIN SHOWERS
AND SCATTERED THUNDERSTORMS IN THE AFTERNOON.
* MAX TEMPERATURE.......67-72.
* 24 HR TREND.........UNCHANGED.
* MIN HUMIDITY..........61-66 PERCENT.
* 24 HR TREND.........19 PERCENT WETTER.
* WIND (20 FT)
* SLOPE/VALLEY.........NORTH WINDS 5 TO 15 MPH.
* RIDGETOP.............NORTHEAST 10 TO 20 MPH.
* CHANCE OF LIGHTNING...32 PERCENT.
* CWR...................50 PERCENT.
TONIGHT
* SKY/WEATHER...........PARTLY CLOUDY. ISOLATED SHOWERS AND
THUNDERSTORMS IN THE EVENING. AREAS OF FOG OVERNIGHT.
* MIN TEMPERATURE.......44-49.
* 24 HR TREND.........4 DEGREES COOLER.
* MAX HUMIDITY..........94-99 PERCENT.
* 24 HR TREND.........1 PERCENT WETTER.
* WIND (20 FT)
* SLOPE/VALLEY.........NORTH WINDS 5 TO 10 MPH IN THE EVENING
BECOMING LIGHT OVERNIGHT.
* RIDGETOP.............NORTH 5 TO 15 MPH.
* CHANCE OF LIGHTNING...22 PERCENT.
* CWR...................10 PERCENT.
THURSDAY
* SKY/WEATHER...........MOSTLY SUNNY. AREAS OF FOG IN THE MORNING.
* MAX TEMPERATURE.......70-75.
* 24 HR TREND.........3 DEGREES WARMER.
* MIN HUMIDITY..........43-48 PERCENT.
* 24 HR TREND.........18 PERCENT DRIER.
* WIND (20 FT)
* SLOPE/VALLEY.........EAST WINDS 5 TO 10 MPH.
* RIDGETOP.............NORTHWEST 5 TO 10 MPH.
* CHANCE OF LIGHTNING...4 PERCENT.
* CWR...................ZERO.
FORECAST DAYS 3 THROUGH 7...
THURSDAY NIGHT
MOSTLY CLEAR. LOWS 43 TO 48. SOUTHEAST WINDS
5 TO 10 MPH.
FRIDAY
PARTLY CLOUDY. LOWS 46 TO 51. HIGHS 74 TO 79. SOUTHEAST
WINDS 5 TO 10 MPH.
SATURDAY
MOSTLY CLEAR. LOWS 48 TO 53. HIGHS 79 TO 84.
SOUTHWEST WINDS 5 TO 10 MPH.
SUNDAY
MOSTLY CLEAR. LOWS 47 TO 52. HIGHS 81 TO 86. NORTHWEST
WINDS 5 TO 15 MPH.
MONDAY
MOSTLY CLEAR. LOWS 46 TO 51. HIGHS 75 TO 80.
TUESDAY
SUNNY. HIGHS 81 TO 86.
MTZ132-172215-
CUSTER COUNTY-
150 AM MDT WED SEP 17 2025
TODAY
* SKY/WEATHER...........PARTLY SUNNY. SCATTERED RAIN SHOWERS IN THE
MORNING, THEN SCATTERED THUNDERSTORMS AND RAIN SHOWERS IN THE
AFTERNOON.
* MAX TEMPERATURE.......68-73.
* 24 HR TREND.........5 DEGREES COOLER.
* MIN HUMIDITY..........57-62 PERCENT.
* 24 HR TREND.........14 PERCENT WETTER.
* WIND (20 FT)
* PLAINS...............NORTHEAST WINDS 5 TO 10 MPH.
* CHANCE OF LIGHTNING...29 PERCENT.
* CWR...................20 PERCENT.
TONIGHT
* SKY/WEATHER...........PARTLY CLOUDY. ISOLATED SHOWERS AND
THUNDERSTORMS IN THE EVENING, THEN ISOLATED RAIN SHOWERS
OVERNIGHT. AREAS OF FOG OVERNIGHT.
* MIN TEMPERATURE.......49-54.
* 24 HR TREND.........4 DEGREES COOLER.
* MAX HUMIDITY..........100 PERCENT.
* 24 HR TREND.........5 PERCENT WETTER.
* WIND (20 FT)
* PLAINS...............NORTHEAST WINDS 5 TO 10 MPH.
* CHANCE OF LIGHTNING...16 PERCENT.
* CWR...................10 PERCENT.
THURSDAY
* SKY/WEATHER...........AREAS OF FOG IN THE MORNING. MOSTLY SUNNY
WITH ISOLATED RAIN SHOWERS.
* MAX TEMPERATURE.......65-70.
* 24 HR TREND.........3 DEGREES COOLER.
* MIN HUMIDITY..........56-61 PERCENT.
* 24 HR TREND.........1 PERCENT DRIER.
* WIND (20 FT)
* PLAINS...............EAST WINDS 5 TO 10 MPH.
* CHANCE OF LIGHTNING...6 PERCENT.
* CWR...................ZERO.
FORECAST DAYS 3 THROUGH 7...
THURSDAY NIGHT
PARTLY CLOUDY. AREAS OF FOG. LOWS 46 TO 51.
EAST WINDS 5 TO 10 MPH.
FRIDAY
PARTLY CLOUDY. LOWS 49 TO 54. HIGHS 70 TO 75. SOUTHEAST
WINDS 5 TO 10 MPH.
SATURDAY
MOSTLY CLEAR. LOWS 52 TO 57. HIGHS 76 TO 81.
SOUTHWEST WINDS 5 TO 10 MPH.
SUNDAY
MOSTLY CLEAR. LOWS 50 TO 55. HIGHS 79 TO 84. WEST WINDS
5 TO 15 MPH.
MONDAY
MOSTLY CLEAR. LOWS 49 TO 54. HIGHS 73 TO 78.
TUESDAY
SUNNY. HIGHS 78 TO 83.
MTZ133-172215-
SIOUX RANGER DISTRICT CUSTER NATIONAL FOREST-
150 AM MDT WED SEP 17 2025
TODAY
* SKY/WEATHER...........AREAS OF FOG IN THE MORNING. MOSTLY CLOUDY
WITH NUMEROUS RAIN SHOWERS AND SCATTERED THUNDERSTORMS.
* MAX TEMPERATURE.......64-69.
* 24 HR TREND.........5 DEGREES COOLER.
* MIN HUMIDITY..........84-89 PERCENT.
* 24 HR TREND.........35 PERCENT WETTER.
* WIND (20 FT)
* PLAINS...............NORTHEAST WINDS 5 TO 15 MPH.
* CHANCE OF LIGHTNING...44 PERCENT.
* CWR...................70 PERCENT.
TONIGHT
* SKY/WEATHER...........MOSTLY CLOUDY. SCATTERED THUNDERSTORMS AND
RAIN SHOWERS IN THE EVENING, THEN NUMEROUS RAIN SHOWERS AND
ISOLATED THUNDERSTORMS OVERNIGHT. PATCHY FOG IN THE EVENING, THEN
AREAS OF FOG OVERNIGHT.
* MIN TEMPERATURE.......50-55.
* 24 HR TREND.........3 DEGREES COOLER.
* MAX HUMIDITY..........100 PERCENT.
* 24 HR TREND.........4 PERCENT WETTER.
* WIND (20 FT)
* PLAINS...............NORTH WINDS 5 TO 15 MPH.
* CHANCE OF LIGHTNING...27 PERCENT.
* CWR...................40 PERCENT.
THURSDAY
* SKY/WEATHER...........PATCHY FOG IN THE MORNING. MOSTLY CLOUDY
WITH SCATTERED RAIN SHOWERS.
* MAX TEMPERATURE.......62-67.
* 24 HR TREND.........2 DEGREES COOLER.
* MIN HUMIDITY..........76-81 PERCENT.
* 24 HR TREND.........8 PERCENT DRIER.
* WIND (20 FT)
* PLAINS...............NORTHEAST WINDS 5 TO 15 MPH.
* CHANCE OF LIGHTNING...11 PERCENT.
* CWR...................20 PERCENT.
FORECAST DAYS 3 THROUGH 7...
THURSDAY NIGHT
PARTLY CLOUDY. AREAS OF FOG. ISOLATED SHOWERS.
LOWS 46 TO 51. NORTHEAST WINDS 5 TO 10 MPH.
FRIDAY
PARTLY CLOUDY. AREAS OF FOG. LOWS 47 TO 52. HIGHS 69 TO
74. SOUTH WINDS 5 TO 10 MPH.
SATURDAY
MOSTLY CLEAR. LOWS 50 TO 55. HIGHS 76 TO 81.
SOUTHWEST WINDS 5 TO 10 MPH.
SUNDAY
MOSTLY CLEAR. ISOLATED SHOWERS. LOWS 50 TO 55. HIGHS
79 TO 84. WEST WINDS 5 TO 15 MPH.
MONDAY
MOSTLY CLEAR. LOWS 48 TO 53. HIGHS 73 TO 78.
TUESDAY
SUNNY. HIGHS 78 TO 83.
WYZ274-172215-
SHERIDAN COUNTY-
150 AM MDT WED SEP 17 2025
TODAY
* SKY/WEATHER...........MOSTLY CLOUDY. AREAS OF FOG IN THE MORNING.
SCATTERED RAIN SHOWERS IN THE MORNING, THEN NUMEROUS RAIN SHOWERS
AND SCATTERED THUNDERSTORMS IN THE AFTERNOON.
* MAX TEMPERATURE.......65-70.
* 24 HR TREND.........1 DEGREE WARMER.
* MIN HUMIDITY..........68-73 PERCENT.
* 24 HR TREND.........28 PERCENT WETTER.
* WIND (20 FT)
* SLOPE/VALLEY.........NORTHWEST WINDS 5 TO 15 MPH.
* RIDGETOP.............NORTHEAST 5 TO 15 MPH.
* CHANCE OF LIGHTNING...30 PERCENT.
* CWR...................60 PERCENT.
TONIGHT
* SKY/WEATHER...........MOSTLY CLOUDY WITH SCATTERED RAIN SHOWERS
AND ISOLATED THUNDERSTORMS IN THE EVENING, THEN MOSTLY CLEAR
OVERNIGHT. AREAS OF FOG THROUGH THE NIGHT.
* MIN TEMPERATURE.......40-45.
* 24 HR TREND.........3 DEGREES COOLER.
* MAX HUMIDITY..........100 PERCENT.
* 24 HR TREND.........UNCHANGED.
* WIND (20 FT)
* SLOPE/VALLEY.........WEST WINDS 5 TO 10 MPH.
* RIDGETOP.............NORTH 5 TO 15 MPH.
* CHANCE OF LIGHTNING...19 PERCENT.
* CWR...................20 PERCENT.
THURSDAY
* SKY/WEATHER...........SUNNY. AREAS OF FOG IN THE MORNING.
* MAX TEMPERATURE.......70-75.
* 24 HR TREND.........5 DEGREES WARMER.
* MIN HUMIDITY..........41-46 PERCENT.
* 24 HR TREND.........27 PERCENT DRIER.
* WIND (20 FT)
* SLOPE/VALLEY.........LIGHT WINDS IN THE MORNING BECOMING EAST 5
TO 10 MPH IN THE AFTERNOON.
* RIDGETOP.............NORTHWEST 5 TO 15 MPH.
* CHANCE OF LIGHTNING...2 PERCENT.
* CWR...................ZERO.
FORECAST DAYS 3 THROUGH 7...
THURSDAY NIGHT
MOSTLY CLEAR. LOWS 40 TO 45. SOUTH WINDS 5 TO
10 MPH.
FRIDAY
PARTLY CLOUDY. LOWS 44 TO 49. HIGHS 75 TO 80. SOUTHEAST
WINDS 5 TO 10 MPH.
SATURDAY
MOSTLY CLEAR. LOWS 45 TO 50. HIGHS 79 TO 84. WEST
WINDS 5 TO 10 MPH.
SUNDAY
MOSTLY CLEAR. ISOLATED SHOWERS. LOWS 44 TO 49. HIGHS
80 TO 85. WEST WINDS 5 TO 10 MPH.
MONDAY
MOSTLY CLEAR. LOWS 44 TO 49. HIGHS 75 TO 80.
TUESDAY
SUNNY. HIGHS 81 TO 86.
WYZ284-172215-
BIGHORN NATIONAL FOREST-
150 AM MDT WED SEP 17 2025
TODAY
* SKY/WEATHER...........MOSTLY CLOUDY. AREAS OF FOG IN THE MORNING.
SCATTERED RAIN SHOWERS IN THE MORNING, THEN NUMEROUS RAIN SHOWERS
AND SCATTERED THUNDERSTORMS IN THE AFTERNOON.
* MAX TEMPERATURE.......49-54.
* 24 HR TREND.........UNCHANGED.
* MIN HUMIDITY..........69-74 PERCENT.
* 24 HR TREND.........12 PERCENT WETTER.
* WIND (20 FT)
* AT BURGESS JCT.......NORTH WINDS 5 TO 15 MPH.
* CHANCE OF LIGHTNING...25 PERCENT.
* CWR...................50 PERCENT.
TONIGHT
* SKY/WEATHER...........MOSTLY CLOUDY WITH SCATTERED RAIN SHOWERS
AND ISOLATED THUNDERSTORMS IN THE EVENING, THEN MOSTLY CLEAR
OVERNIGHT. AREAS OF FOG THROUGH THE NIGHT.
* MIN TEMPERATURE.......31-36.
* 24 HR TREND.........1 DEGREE COOLER.
* MAX HUMIDITY..........100 PERCENT.
* 24 HR TREND.........UNCHANGED.
* WIND (20 FT)
* AT BURGESS JCT.......NORTHWEST WINDS 5 TO 15 MPH IN THE EVENING
SHIFTING TO THE SOUTHWEST 5 TO 10 MPH OVERNIGHT.
* CHANCE OF LIGHTNING...15 PERCENT.
* CWR...................10 PERCENT.
THURSDAY
* SKY/WEATHER...........SUNNY. AREAS OF FOG IN THE MORNING.
* MAX TEMPERATURE.......56-61.
* 24 HR TREND.........7 DEGREES WARMER.
* MIN HUMIDITY..........43-48 PERCENT.
* 24 HR TREND.........26 PERCENT DRIER.
* WIND (20 FT)
* AT BURGESS JCT.......SOUTHWEST WINDS 5 TO 10 MPH IN THE MORNING
SHIFTING TO THE NORTHEAST 5 TO 15 MPH IN THE AFTERNOON.
* CHANCE OF LIGHTNING...2 PERCENT.
* CWR...................ZERO.
FORECAST DAYS 3 THROUGH 7...
THURSDAY NIGHT
MOSTLY CLEAR. LOWS 34 TO 39. SOUTH WINDS 5 TO
15 MPH.
FRIDAY
PARTLY CLOUDY. LOWS 39 TO 44. HIGHS 61 TO 66. WEST
WINDS 5 TO 15 MPH.
SATURDAY
MOSTLY CLEAR. LOWS 40 TO 45. HIGHS 63 TO 68.
SOUTHWEST WINDS 5 TO 15 MPH.
SUNDAY
PARTLY CLOUDY. ISOLATED SHOWERS. LOWS 35 TO 40. HIGHS
63 TO 68. WEST WINDS 5 TO 15 MPH.
MONDAY
MOSTLY CLEAR. LOWS 39 TO 44. HIGHS 59 TO 64.
TUESDAY
SUNNY. HIGHS 65 TO 70.
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