291
FNUS55 KBYZ 260659
FWFBYZ
FIRE WEATHER PLANNING FORECAST FOR SCEN AND SERN MONTANA
NATIONAL WEATHER SERVICE BILLINGS MT
1259 AM MDT SAT SEP 26 2026
DISCUSSION
WIND GUSTS 25-35 MPH ARE EXPECTED WITH A DRY COLD FRONT EARLY
THIS MORNING, STRONGEST FOR AREAS NORTH AND EAST OF BILLINGS. WIND
SPEEDS WILL DECREASE THROUGH THE DAY, WITH TEMPERATURES NEAR 70
AND MINIMUM RH VALUES 25-40% ACROSS THE DISTRICTS THIS AFTERNOON.
MODERATE RH RECOVERIES ARE FORECAST TONIGHT (50-75%). SUNDAY WILL
BE DRY WITH INCREASING CLOUDS AND TEMPERATURES IN THE 60S. RH
VALUES WILL BE IN THE 30-45% RANGE. A WEATHER SYSTEM WILL BRING A
LOW CHANCE OF A WETTING RAIN SUNDAY NIGHT THROUGH TUESDAY
MORNING. THE EXCEPTION WILL BE THE SIOUX RANGER DISTRICT (FWZ133)
ALONG THE MONTANA/DAKOTAS BORDER WHERE THE CHANCE OF WETTING RAIN
IS UP TO 50-70% SUNDAY NIGHT INTO MONDAY MORNING, AND THE
BEARTOOTH MOUNTAINS MONDAY INTO MONDAY NIGHT (50-70%). THE CHANCE
OF SNOW ACCUMULATIONS ARE TRENDING DOWNWARD SIGNIFICANTLY WITH
THIS SYSTEM, BUT THE BEST CHANCE FOR SOME LIGHT SNOW ACCUMULATION
WILL BE ABOVE 10K FT IN THE BEARTOOTH/ABSAROKA/CRAZY MOUNTAINS
MONDAY AND MONDAY NIGHT. DRY CONDITIONS, SEASONAL TEMPERATURES,
AND BREEZY AFTERNOONS BUILD OVER THE REGION TUESDAY THROUGH
THURSDAY NEXT WEEK. CHAMBERS
MTZ123-262215-
GALLATIN NATIONAL FOREST-
1259 AM MDT SAT SEP 26 2026
TODAY
* SKY/WEATHER...........MOSTLY SUNNY.
* MAX TEMPERATURE.......61-71 AT 5000 FEET...50-60 AT 7000 FEET.
* 24 HR TREND.........16 DEGREES COOLER.
* MIN HUMIDITY..........30-35 PERCENT.
* 24 HR TREND.........14 PERCENT WETTER.
* WIND (20 FT)
* SLOPE/VALLEY.........WEST WINDS 5 TO 10 MPH.
* RIDGETOP.............SOUTHWEST 15 TO 30 MPH.
* CHANCE OF LIGHTNING...1 PERCENT.
* CWR...................ZERO.
TONIGHT
* SKY/WEATHER...........MOSTLY CLOUDY.
* MIN TEMPERATURE.......37-47 AT 5000 FEET...35-45 AT 7000 FEET.
* 24 HR TREND.........UNCHANGED.
* MAX HUMIDITY..........58-68 PERCENT AT 5000 FEET...62-72 PERCENT
AT 7000 FEET.
* 24 HR TREND.........17 PERCENT DRIER.
* WIND (20 FT)
* SLOPE/VALLEY.........NORTH WINDS 5 TO 10 MPH IN THE EVENING
BECOMING LIGHT OVERNIGHT.
* RIDGETOP.............SOUTHWEST 5 TO 15 MPH.
* CHANCE OF LIGHTNING...1 PERCENT.
* CWR...................ZERO.
SUNDAY
* SKY/WEATHER...........CLOUDY.
* MAX TEMPERATURE.......61-71 AT 5000 FEET...50-60 AT 7000 FEET.
* 24 HR TREND.........2 DEGREES WARMER.
* MIN HUMIDITY..........38-43 PERCENT.
* 24 HR TREND.........8 PERCENT WETTER.
* WIND (20 FT)
* SLOPE/VALLEY.........SOUTHEAST WINDS 5 TO 10 MPH IN THE MORNING
SHIFTING TO THE NORTHWEST IN THE AFTERNOON.
* RIDGETOP.............SOUTHWEST 10 TO 20 MPH.
* CHANCE OF LIGHTNING...6 PERCENT.
* CWR...................ZERO.
FORECAST DAYS 3 THROUGH 7...
SUNDAY NIGHT
MOSTLY CLOUDY. ISOLATED SHOWERS. LOWS 37 TO 46.
NORTH WINDS 5 TO 10 MPH.
MONDAY
PARTLY CLOUDY. SCATTERED SHOWERS. LOWS 35 TO 44. HIGHS
61 TO 70. SOUTHWEST WINDS 5 TO 10 MPH.
TUESDAY
MOSTLY CLEAR. LOWS 40 TO 50. HIGHS 65 TO 74. SOUTHWEST
WINDS 5 TO 10 MPH.
WEDNESDAY
MOSTLY CLEAR. LOWS 37 TO 47. HIGHS 63 TO 73.
SOUTHWEST WINDS 5 TO 10 MPH.
THURSDAY
PARTLY CLOUDY. LOWS 36 TO 46. HIGHS 63 TO 73.
FRIDAY
PARTLY SUNNY. ISOLATED SHOWERS. HIGHS 59 TO 69.
MTZ124-262215-
WHEATLAND COUNTY/SWEET GRASS COUNTY-
1259 AM MDT SAT SEP 26 2026
TODAY
* SKY/WEATHER...........SUNNY.
* MAX TEMPERATURE.......65-70.
* 24 HR TREND.........14 DEGREES COOLER.
* MIN HUMIDITY..........22-27 PERCENT.
* 24 HR TREND.........3 PERCENT WETTER.
* WIND (20 FT)
* PLAINS...............WEST WINDS 10 TO 20 MPH WITH GUSTS TO AROUND
30 MPH.
* CHANCE OF LIGHTNING...0 PERCENT.
* CWR...................ZERO.
TONIGHT
* SKY/WEATHER...........MOSTLY CLOUDY.
* MIN TEMPERATURE.......39-44.
* 24 HR TREND.........5 DEGREES COOLER.
* MAX HUMIDITY..........48-53 PERCENT.
* 24 HR TREND.........9 PERCENT DRIER.
* WIND (20 FT)
* PLAINS...............NORTH WINDS 5 TO 15 MPH.
* CHANCE OF LIGHTNING...1 PERCENT.
* CWR...................ZERO.
SUNDAY
* SKY/WEATHER...........MOSTLY CLOUDY.
* MAX TEMPERATURE.......59-64.
* 24 HR TREND.........6 DEGREES COOLER.
* MIN HUMIDITY..........29-34 PERCENT.
* 24 HR TREND.........7 PERCENT WETTER.
* WIND (20 FT)
* PLAINS...............SOUTHEAST WINDS 5 TO 15 MPH.
* CHANCE OF LIGHTNING...2 PERCENT.
* CWR...................ZERO.
FORECAST DAYS 3 THROUGH 7...
SUNDAY NIGHT
MOSTLY CLOUDY. ISOLATED SHOWERS. LOWS 41 TO 46.
SOUTH WINDS 5 TO 15 MPH.
MONDAY
PARTLY CLOUDY. LOWS 39 TO 44. HIGHS 65 TO 70. WEST
WINDS 5 TO 10 MPH.
TUESDAY
MOSTLY CLEAR. LOWS 44 TO 49. HIGHS 69 TO 74. WEST
WINDS 10 TO 20 MPH WITH GUSTS TO AROUND 30 MPH.
WEDNESDAY
MOSTLY CLEAR. LOWS 40 TO 45. HIGHS 67 TO 72.
NORTHWEST WINDS 10 TO 20 MPH WITH GUSTS TO AROUND 35 MPH.
THURSDAY
PARTLY CLOUDY. LOWS 40 TO 45. HIGHS 64 TO 69.
FRIDAY
MOSTLY CLOUDY. ISOLATED SHOWERS. HIGHS 61 TO 66.
MTZ125-262215-
STILLWATER COUNTY-
1259 AM MDT SAT SEP 26 2026
TODAY
* SKY/WEATHER...........SUNNY.
* MAX TEMPERATURE.......65-70.
* 24 HR TREND.........16 DEGREES COOLER.
* MIN HUMIDITY..........32-37 PERCENT.
* 24 HR TREND.........15 PERCENT WETTER.
* WIND (20 FT)
* PLAINS...............NORTHEAST WINDS 5 TO 10 MPH.
* CHANCE OF LIGHTNING...1 PERCENT.
* CWR...................ZERO.
TONIGHT
* SKY/WEATHER...........PARTLY CLOUDY.
* MIN TEMPERATURE.......42-47.
* 24 HR TREND.........6 DEGREES COOLER.
* MAX HUMIDITY..........56-61 PERCENT.
* 24 HR TREND.........11 PERCENT DRIER.
* WIND (20 FT)
* PLAINS...............NORTHEAST WINDS 5 TO 10 MPH.
* CHANCE OF LIGHTNING...1 PERCENT.
* CWR...................ZERO.
SUNDAY
* SKY/WEATHER...........MOSTLY CLOUDY. ISOLATED RAIN SHOWERS IN THE
AFTERNOON.
* MAX TEMPERATURE.......59-64.
* 24 HR TREND.........6 DEGREES COOLER.
* MIN HUMIDITY..........35-40 PERCENT.
* 24 HR TREND.........3 PERCENT WETTER.
* WIND (20 FT)
* PLAINS...............NORTHWEST WINDS 5 TO 10 MPH IN THE MORNING
SHIFTING TO THE NORTHEAST 5 TO 15 MPH IN THE AFTERNOON.
* CHANCE OF LIGHTNING...5 PERCENT.
* CWR...................LESS THAN 10 PERCENT.
FORECAST DAYS 3 THROUGH 7...
SUNDAY NIGHT
MOSTLY CLOUDY. SCATTERED SHOWERS. LOWS 42 TO 47.
WEST WINDS 5 TO 10 MPH.
MONDAY
MOSTLY CLOUDY. SCATTERED SHOWERS. LOWS 40 TO 45. HIGHS
63 TO 68. SOUTHWEST WINDS 5 TO 10 MPH.
TUESDAY
MOSTLY CLEAR. LOWS 44 TO 49. HIGHS 70 TO 75. SOUTHWEST
WINDS 5 TO 10 MPH.
WEDNESDAY
PARTLY CLOUDY. LOWS 42 TO 47. HIGHS 68 TO 73. WEST
WINDS 5 TO 10 MPH.
THURSDAY
PARTLY CLOUDY. LOWS 41 TO 46. HIGHS 66 TO 71.
FRIDAY
PARTLY SUNNY. SCATTERED SHOWERS. HIGHS 63 TO 68.
MTZ126-262215-
BEARTOOTH RANGER DISTRICT CUSTER NATIONAL FOREST-
1259 AM MDT SAT SEP 26 2026
TODAY
* SKY/WEATHER...........SUNNY.
* MAX TEMPERATURE.......66-73 AT 5000 FEET...58-68 AT 7000 FEET.
* 24 HR TREND.........7 DEGREES COOLER.
* MIN HUMIDITY..........28-38 PERCENT AT 5000 FEET...30-40 PERCENT
AT 7000 FEET.
* 24 HR TREND.........14 PERCENT WETTER.
* WIND (20 FT)
* SLOPE/VALLEY.........SOUTH WINDS 5 TO 10 MPH IN THE MORNING
SHIFTING TO THE WEST 5 TO 15 MPH IN THE AFTERNOON.
* RIDGETOP.............SOUTHWEST 15 TO 30 MPH.
* CHANCE OF LIGHTNING...1 PERCENT.
* CWR...................ZERO.
TONIGHT
* SKY/WEATHER...........MOSTLY CLOUDY.
* MIN TEMPERATURE.......43-50 AT 5000 FEET...37-46 AT 7000 FEET.
* 24 HR TREND.........4 DEGREES COOLER.
* MAX HUMIDITY..........47-57 PERCENT AT 5000 FEET...53-63 PERCENT
AT 7000 FEET.
* 24 HR TREND.........1 PERCENT DRIER.
* WIND (20 FT)
* SLOPE/VALLEY.........NORTHWEST WINDS 5 TO 10 MPH.
* RIDGETOP.............WEST 10 TO 20 MPH.
* CHANCE OF LIGHTNING...1 PERCENT.
* CWR...................ZERO.
SUNDAY
* SKY/WEATHER...........PARTLY SUNNY. SCATTERED RAIN SHOWERS IN THE
AFTERNOON.
* MAX TEMPERATURE.......59-68 AT 5000 FEET...54-64 AT 7000 FEET.
* 24 HR TREND.........4 DEGREES COOLER.
* MIN HUMIDITY..........34-44 PERCENT AT 5000 FEET...39-49 PERCENT
AT 7000 FEET.
* 24 HR TREND.........10 PERCENT WETTER.
* WIND (20 FT)
* SLOPE/VALLEY.........NORTHEAST WINDS 5 TO 10 MPH.
* RIDGETOP.............SOUTHWEST 10 TO 20 MPH.
* CHANCE OF LIGHTNING...5 PERCENT.
* CWR...................LESS THAN 10 PERCENT.
FORECAST DAYS 3 THROUGH 7...
SUNDAY NIGHT
MOSTLY CLOUDY. SCATTERED SHOWERS. LOWS 42 TO 50.
NORTHWEST WINDS 5 TO 10 MPH.
MONDAY
MOSTLY CLOUDY. SHOWERS. LOWS 41 TO 48. HIGHS 60 TO 65.
WEST WINDS 5 TO 10 MPH.
TUESDAY
MOSTLY CLEAR. LOWS 46 TO 53. HIGHS 64 TO 71. WEST
WINDS 5 TO 15 MPH.
WEDNESDAY
MOSTLY CLEAR. LOWS 43 TO 49. HIGHS 64 TO 70. WEST
WINDS 5 TO 10 MPH.
THURSDAY
PARTLY CLOUDY. LOWS 43 TO 50. HIGHS 62 TO 68.
FRIDAY
PARTLY SUNNY. SCATTERED SHOWERS AND SNOW SHOWERS. HIGHS
59 TO 66.
MTZ127-262215-
GOLDEN VALLEY COUNTY/MUSSELSHELL COUNTY-
1259 AM MDT SAT SEP 26 2026
TODAY
* SKY/WEATHER...........SUNNY.
* MAX TEMPERATURE.......63-68.
* 24 HR TREND.........12 DEGREES COOLER.
* MIN HUMIDITY..........30-35 PERCENT.
* 24 HR TREND.........2 PERCENT WETTER.
* WIND (20 FT)
* PLAINS...............WEST WINDS 5 TO 15 MPH.
* CHANCE OF LIGHTNING...0 PERCENT.
* CWR...................ZERO.
TONIGHT
* SKY/WEATHER...........MOSTLY CLOUDY.
* MIN TEMPERATURE.......43-48.
* 24 HR TREND.........6 DEGREES COOLER.
* MAX HUMIDITY..........43-48 PERCENT.
* 24 HR TREND.........13 PERCENT DRIER.
* WIND (20 FT)
* PLAINS...............NORTH WINDS 5 TO 15 MPH.
* CHANCE OF LIGHTNING...1 PERCENT.
* CWR...................ZERO.
SUNDAY
* SKY/WEATHER...........CLOUDY.
* MAX TEMPERATURE.......56-61.
* 24 HR TREND.........7 DEGREES COOLER.
* MIN HUMIDITY..........41-46 PERCENT.
* 24 HR TREND.........11 PERCENT WETTER.
* WIND (20 FT)
* PLAINS...............EAST WINDS 5 TO 15 MPH.
* CHANCE OF LIGHTNING...3 PERCENT.
* CWR...................ZERO.
FORECAST DAYS 3 THROUGH 7...
SUNDAY NIGHT
MOSTLY CLOUDY. ISOLATED SHOWERS. LOWS 44 TO 49.
NORTH WINDS 5 TO 15 MPH.
MONDAY
MOSTLY CLOUDY. LOWS 44 TO 49. HIGHS 61 TO 66. SOUTHWEST
WINDS 5 TO 10 MPH.
TUESDAY
MOSTLY CLEAR. LOWS 49 TO 54. HIGHS 66 TO 71. WEST
WINDS 5 TO 15 MPH.
WEDNESDAY
PARTLY CLOUDY. LOWS 45 TO 50. HIGHS 63 TO 68. NORTH
WINDS 5 TO 15 MPH.
THURSDAY
PARTLY CLOUDY. LOWS 45 TO 50. HIGHS 60 TO 65.
FRIDAY
MOSTLY CLOUDY. ISOLATED SHOWERS. HIGHS 57 TO 62.
MTZ128-262215-
YELLOWSTONE COUNTY-
1259 AM MDT SAT SEP 26 2026
TODAY
* SKY/WEATHER...........SUNNY.
* MAX TEMPERATURE.......67-72.
* 24 HR TREND.........12 DEGREES COOLER.
* MIN HUMIDITY..........36-41 PERCENT.
* 24 HR TREND.........11 PERCENT WETTER.
* WIND (20 FT)
* PLAINS...............NORTH WINDS 5 TO 10 MPH.
* CHANCE OF LIGHTNING...1 PERCENT.
* CWR...................ZERO.
TONIGHT
* SKY/WEATHER...........MOSTLY CLOUDY.
* MIN TEMPERATURE.......45-50.
* 24 HR TREND.........5 DEGREES COOLER.
* MAX HUMIDITY..........45-50 PERCENT.
* 24 HR TREND.........16 PERCENT DRIER.
* WIND (20 FT)
* PLAINS...............NORTHEAST WINDS 5 TO 15 MPH.
* CHANCE OF LIGHTNING...1 PERCENT.
* CWR...................ZERO.
SUNDAY
* SKY/WEATHER...........CLOUDY.
* MAX TEMPERATURE.......61-66.
* 24 HR TREND.........6 DEGREES COOLER.
* MIN HUMIDITY..........41-46 PERCENT.
* 24 HR TREND.........5 PERCENT WETTER.
* WIND (20 FT)
* PLAINS...............NORTHEAST WINDS 5 TO 10 MPH.
* CHANCE OF LIGHTNING...2 PERCENT.
* CWR...................ZERO.
FORECAST DAYS 3 THROUGH 7...
SUNDAY NIGHT
MOSTLY CLOUDY. ISOLATED SHOWERS. LOWS 45 TO 50.
NORTH WINDS 5 TO 15 MPH.
MONDAY
MOSTLY CLOUDY. LOWS 44 TO 49. HIGHS 64 TO 69. SOUTHWEST
WINDS 5 TO 10 MPH.
TUESDAY
MOSTLY CLEAR. LOWS 48 TO 53. HIGHS 71 TO 76. SOUTHWEST
WINDS 5 TO 10 MPH.
WEDNESDAY
MOSTLY CLEAR. LOWS 45 TO 50. HIGHS 69 TO 74. NORTH
WINDS 5 TO 15 MPH.
THURSDAY
PARTLY CLOUDY. LOWS 45 TO 50. HIGHS 66 TO 71.
FRIDAY
MOSTLY CLOUDY. ISOLATED SHOWERS. HIGHS 63 TO 68.
MTZ129-262215-
CROW INDIAN RESERVATION/BIGHORN CANYON REC AREA-
1259 AM MDT SAT SEP 26 2026
TODAY
* SKY/WEATHER...........SUNNY.
* MAX TEMPERATURE.......63-73 AT 5000 FEET...59-64 AT 7000 FEET.
* 24 HR TREND.........13 DEGREES COOLER.
* MIN HUMIDITY..........32-37 PERCENT.
* 24 HR TREND.........6 PERCENT WETTER.
* WIND (20 FT)
* SLOPE/VALLEY.........NORTH WINDS 5 TO 10 MPH IN THE MORNING
SHIFTING TO THE EAST IN THE AFTERNOON.
* RIDGETOP.............SOUTHWEST 20 TO 35 MPH.
* CHANCE OF LIGHTNING...1 PERCENT.
* CWR...................ZERO.
TONIGHT
* SKY/WEATHER...........PARTLY CLOUDY.
* MIN TEMPERATURE.......43-50 AT 5000 FEET...41-46 AT 7000 FEET.
* 24 HR TREND.........5 DEGREES COOLER.
* MAX HUMIDITY..........53-63 PERCENT AT 5000 FEET...51-61 PERCENT
AT 7000 FEET.
* 24 HR TREND.........6 PERCENT DRIER.
* WIND (20 FT)
* SLOPE/VALLEY.........EAST WINDS 5 TO 15 MPH.
* RIDGETOP.............SOUTHWEST 15 TO 30 MPH.
* CHANCE OF LIGHTNING...1 PERCENT.
* CWR...................ZERO.
SUNDAY
* SKY/WEATHER...........MOSTLY CLOUDY.
* MAX TEMPERATURE.......58-68 AT 5000 FEET...54-61 AT 7000 FEET.
* 24 HR TREND.........2 DEGREES COOLER.
* MIN HUMIDITY..........35-45 PERCENT AT 5000 FEET...41-47 PERCENT
AT 7000 FEET.
* 24 HR TREND.........9 PERCENT WETTER.
* WIND (20 FT)
* SLOPE/VALLEY.........EAST WINDS 5 TO 15 MPH.
* RIDGETOP.............SOUTHWEST 10 TO 20 MPH.
* CHANCE OF LIGHTNING...2 PERCENT.
* CWR...................ZERO.
FORECAST DAYS 3 THROUGH 7...
SUNDAY NIGHT
MOSTLY CLOUDY. ISOLATED SHOWERS. LOWS 43 TO 50.
NORTH WINDS 5 TO 10 MPH.
MONDAY
MOSTLY CLOUDY. SCATTERED SHOWERS. LOWS 43 TO 49. HIGHS
57 TO 67. NORTHWEST WINDS 5 TO 10 MPH.
TUESDAY
MOSTLY CLEAR. LOWS 47 TO 53. HIGHS 62 TO 72. SOUTH
WINDS 5 TO 10 MPH.
WEDNESDAY
MOSTLY CLEAR. LOWS 44 TO 49. HIGHS 61 TO 71.
NORTHEAST WINDS 5 TO 15 MPH.
THURSDAY
PARTLY CLOUDY. LOWS 44 TO 50. HIGHS 59 TO 69.
FRIDAY
PARTLY SUNNY. HIGHS 57 TO 67.
MTZ130-262215-
NORTHERN ROSEBUD/NORTHERN TREASURE COUNTIES-
1259 AM MDT SAT SEP 26 2026
TODAY
* SKY/WEATHER...........SUNNY.
* MAX TEMPERATURE.......67-72.
* 24 HR TREND.........13 DEGREES COOLER.
* MIN HUMIDITY..........29-34 PERCENT.
* 24 HR TREND.........7 PERCENT DRIER.
* WIND (20 FT)
* PLAINS...............NORTHWEST WINDS 5 TO 15 MPH.
* CHANCE OF LIGHTNING...0 PERCENT.
* CWR...................ZERO.
TONIGHT
* SKY/WEATHER...........PARTLY CLOUDY.
* MIN TEMPERATURE.......44-49.
* 24 HR TREND.........7 DEGREES COOLER.
* MAX HUMIDITY..........47-52 PERCENT.
* 24 HR TREND.........13 PERCENT DRIER.
* WIND (20 FT)
* PLAINS...............NORTHEAST WINDS 5 TO 10 MPH.
* CHANCE OF LIGHTNING...1 PERCENT.
* CWR...................ZERO.
SUNDAY
* SKY/WEATHER...........MOSTLY CLOUDY.
* MAX TEMPERATURE.......65-70.
* 24 HR TREND.........2 DEGREES COOLER.
* MIN HUMIDITY..........36-41 PERCENT.
* 24 HR TREND.........7 PERCENT WETTER.
* WIND (20 FT)
* PLAINS...............EAST WINDS 5 TO 10 MPH.
* CHANCE OF LIGHTNING...4 PERCENT.
* CWR...................ZERO.
FORECAST DAYS 3 THROUGH 7...
SUNDAY NIGHT
MOSTLY CLOUDY. ISOLATED SHOWERS. LOWS 46 TO 51.
NORTHEAST WINDS 5 TO 15 MPH.
MONDAY
MOSTLY CLOUDY. LOWS 44 TO 49. HIGHS 66 TO 71. NORTHWEST
WINDS 5 TO 10 MPH.
TUESDAY
MOSTLY CLEAR. LOWS 48 TO 53. HIGHS 71 TO 76. SOUTHWEST
WINDS 5 TO 10 MPH.
WEDNESDAY
MOSTLY CLEAR. LOWS 45 TO 50. HIGHS 69 TO 74. NORTH
WINDS 5 TO 10 MPH.
THURSDAY
PARTLY CLOUDY. LOWS 45 TO 50. HIGHS 66 TO 71.
FRIDAY
MOSTLY CLOUDY. HIGHS 64 TO 69.
MTZ131-262215-
NORTHERN CHEYENNE INDIAN RESERVATION/ASHLAND RANGER DISTRICT
CUSTER NATL FOREST-
1259 AM MDT SAT SEP 26 2026
TODAY
* SKY/WEATHER...........SUNNY.
* MAX TEMPERATURE.......69-74.
* 24 HR TREND.........11 DEGREES COOLER.
* MIN HUMIDITY..........24-29 PERCENT.
* 24 HR TREND.........UNCHANGED.
* WIND (20 FT)
* SLOPE/VALLEY.........NORTH WINDS 5 TO 15 MPH.
* RIDGETOP.............WEST 20 TO 35 MPH.
* CHANCE OF LIGHTNING...0 PERCENT.
* CWR...................ZERO.
TONIGHT
* SKY/WEATHER...........PARTLY CLOUDY.
* MIN TEMPERATURE.......42-47.
* 24 HR TREND.........6 DEGREES COOLER.
* MAX HUMIDITY..........56-61 PERCENT.
* 24 HR TREND.........1 PERCENT DRIER.
* WIND (20 FT)
* SLOPE/VALLEY.........NORTHEAST WINDS 5 TO 15 MPH.
* RIDGETOP.............SOUTHWEST 15 TO 30 MPH.
* CHANCE OF LIGHTNING...1 PERCENT.
* CWR...................ZERO.
SUNDAY
* SKY/WEATHER...........PARTLY SUNNY.
* MAX TEMPERATURE.......70-75.
* 24 HR TREND.........1 DEGREE WARMER.
* MIN HUMIDITY..........36-41 PERCENT.
* 24 HR TREND.........12 PERCENT WETTER.
* WIND (20 FT)
* SLOPE/VALLEY.........EAST WINDS 5 TO 15 MPH.
* RIDGETOP.............SOUTHWEST 10 TO 20 MPH.
* CHANCE OF LIGHTNING...3 PERCENT.
* CWR...................ZERO.
FORECAST DAYS 3 THROUGH 7...
SUNDAY NIGHT
MOSTLY CLOUDY. PATCHY FOG. SCATTERED SHOWERS.
LOWS 46 TO 51. NORTHEAST WINDS 5 TO 10 MPH.
MONDAY
MOSTLY CLOUDY. ISOLATED SHOWERS. LOWS 43 TO 48. HIGHS
65 TO 70. NORTHWEST WINDS 5 TO 10 MPH.
TUESDAY
MOSTLY CLEAR. LOWS 46 TO 51. HIGHS 71 TO 76. SOUTH
WINDS 5 TO 10 MPH.
WEDNESDAY
MOSTLY CLEAR. LOWS 44 TO 49. HIGHS 71 TO 76.
NORTHEAST WINDS 5 TO 15 MPH.
THURSDAY
PARTLY CLOUDY. LOWS 43 TO 48. HIGHS 69 TO 74.
FRIDAY
PARTLY SUNNY. HIGHS 66 TO 71.
MTZ132-262215-
CUSTER COUNTY-
1259 AM MDT SAT SEP 26 2026
TODAY
* SKY/WEATHER...........SUNNY.
* MAX TEMPERATURE.......65-70.
* 24 HR TREND.........9 DEGREES COOLER.
* MIN HUMIDITY..........24-29 PERCENT.
* 24 HR TREND.........7 PERCENT DRIER.
* WIND (20 FT)
* PLAINS...............NORTHWEST WINDS 10 TO 20 MPH. GUSTS UP TO 30
MPH IN THE MORNING.
* CHANCE OF LIGHTNING...0 PERCENT.
* CWR...................ZERO.
TONIGHT
* SKY/WEATHER...........PARTLY CLOUDY.
* MIN TEMPERATURE.......44-49.
* 24 HR TREND.........9 DEGREES COOLER.
* MAX HUMIDITY..........47-52 PERCENT.
* 24 HR TREND.........25 PERCENT DRIER.
* WIND (20 FT)
* PLAINS...............NORTHEAST WINDS 5 TO 10 MPH.
* CHANCE OF LIGHTNING...1 PERCENT.
* CWR...................ZERO.
SUNDAY
* SKY/WEATHER...........MOSTLY CLOUDY.
* MAX TEMPERATURE.......65-70.
* 24 HR TREND.........UNCHANGED.
* MIN HUMIDITY..........35-40 PERCENT.
* 24 HR TREND.........11 PERCENT WETTER.
* WIND (20 FT)
* PLAINS...............EAST WINDS 5 TO 15 MPH.
* CHANCE OF LIGHTNING...15 PERCENT.
* CWR...................ZERO.
FORECAST DAYS 3 THROUGH 7...
SUNDAY NIGHT
MOSTLY CLOUDY. PATCHY FOG. NUMEROUS SHOWERS AND
ISOLATED THUNDERSTORMS. LOWS 49 TO 54. EAST WINDS 5 TO 15 MPH.
MONDAY
MOSTLY CLOUDY. PATCHY FOG. SCATTERED SHOWERS. LOWS
45 TO 50. HIGHS 63 TO 68. NORTH WINDS 5 TO 10 MPH.
TUESDAY
MOSTLY CLEAR. LOWS 48 TO 53. HIGHS 67 TO 72. SOUTHWEST
WINDS 5 TO 10 MPH.
WEDNESDAY
MOSTLY CLEAR. LOWS 44 TO 49. HIGHS 67 TO 72.
NORTHWEST WINDS 5 TO 15 MPH.
THURSDAY
PARTLY CLOUDY. LOWS 44 TO 49. HIGHS 64 TO 69.
FRIDAY
PARTLY SUNNY. HIGHS 62 TO 67.
MTZ133-262215-
SIOUX RANGER DISTRICT CUSTER NATIONAL FOREST-
1259 AM MDT SAT SEP 26 2026
TODAY
* SKY/WEATHER...........SUNNY.
* MAX TEMPERATURE.......70-75.
* 24 HR TREND.........4 DEGREES COOLER.
* MIN HUMIDITY..........25-30 PERCENT.
* 24 HR TREND.........9 PERCENT DRIER.
* WIND (20 FT)
* PLAINS...............NORTHWEST WINDS 10 TO 20 MPH. GUSTS UP TO 30
MPH IN THE MORNING.
* CHANCE OF LIGHTNING...0 PERCENT.
* CWR...................ZERO.
TONIGHT
* SKY/WEATHER...........PARTLY CLOUDY.
* MIN TEMPERATURE.......46-51.
* 24 HR TREND.........7 DEGREES COOLER.
* MAX HUMIDITY..........59-64 PERCENT.
* 24 HR TREND.........36 PERCENT DRIER.
* WIND (20 FT)
* PLAINS...............NORTHEAST WINDS 5 TO 15 MPH.
* CHANCE OF LIGHTNING...4 PERCENT.
* CWR...................ZERO.
SUNDAY
* SKY/WEATHER...........MOSTLY CLOUDY.
* MAX TEMPERATURE.......67-72.
* 24 HR TREND.........3 DEGREES COOLER.
* MIN HUMIDITY..........44-49 PERCENT.
* 24 HR TREND.........19 PERCENT WETTER.
* WIND (20 FT)
* PLAINS...............EAST WINDS 10 TO 20 MPH. GUSTS UP TO 30 MPH
IN THE AFTERNOON.
* CHANCE OF LIGHTNING...15 PERCENT.
* CWR...................ZERO.
FORECAST DAYS 3 THROUGH 7...
SUNDAY NIGHT
MOSTLY CLOUDY. PATCHY FOG. SHOWERS AND SCATTERED
THUNDERSTORMS. LOWS 51 TO 56. EAST WINDS 10 TO 20 MPH WITH GUSTS
TO AROUND 30 MPH.
MONDAY
MOSTLY CLOUDY. PATCHY FOG. SCATTERED SHOWERS. LOWS
47 TO 52. HIGHS 66 TO 71. NORTH WINDS 5 TO 15 MPH.
TUESDAY
MOSTLY CLEAR. LOWS 48 TO 53. HIGHS 68 TO 73. SOUTHWEST
WINDS 5 TO 10 MPH.
WEDNESDAY
MOSTLY CLEAR. LOWS 46 TO 51. HIGHS 70 TO 75. NORTH
WINDS 5 TO 15 MPH WITH GUSTS TO AROUND 30 MPH.
THURSDAY
PARTLY CLOUDY. LOWS 45 TO 50. HIGHS 64 TO 69.
FRIDAY
PARTLY SUNNY. HIGHS 64 TO 69.
WYZ274-262215-
SHERIDAN COUNTY-
1259 AM MDT SAT SEP 26 2026
TODAY
* SKY/WEATHER...........SUNNY.
* MAX TEMPERATURE.......70-75.
* 24 HR TREND.........10 DEGREES COOLER.
* MIN HUMIDITY..........29-34 PERCENT.
* 24 HR TREND.........6 PERCENT WETTER.
* WIND (20 FT)
* SLOPE/VALLEY.........NORTHEAST WINDS 5 TO 10 MPH.
* RIDGETOP.............SOUTHWEST 15 TO 30 MPH.
* CHANCE OF LIGHTNING...1 PERCENT.
* CWR...................ZERO.
TONIGHT
* SKY/WEATHER...........MOSTLY CLEAR.
* MIN TEMPERATURE.......40-45.
* 24 HR TREND.........6 DEGREES COOLER.
* MAX HUMIDITY..........77-82 PERCENT.
* 24 HR TREND.........6 PERCENT WETTER.
* WIND (20 FT)
* SLOPE/VALLEY.........NORTHWEST WINDS 5 TO 10 MPH.
* RIDGETOP.............SOUTHWEST 10 TO 20 MPH.
* CHANCE OF LIGHTNING...1 PERCENT.
* CWR...................ZERO.
SUNDAY
* SKY/WEATHER...........PARTLY SUNNY.
* MAX TEMPERATURE.......66-71.
* 24 HR TREND.........4 DEGREES COOLER.
* MIN HUMIDITY..........37-42 PERCENT.
* 24 HR TREND.........8 PERCENT WETTER.
* WIND (20 FT)
* SLOPE/VALLEY.........NORTHEAST WINDS 5 TO 10 MPH.
* RIDGETOP.............SOUTHWEST 10 TO 20 MPH.
* CHANCE OF LIGHTNING...2 PERCENT.
* CWR...................ZERO.
FORECAST DAYS 3 THROUGH 7...
SUNDAY NIGHT
MOSTLY CLOUDY. ISOLATED SHOWERS. LOWS 43 TO 48.
WEST WINDS 5 TO 10 MPH.
MONDAY
MOSTLY CLOUDY. PATCHY FOG. SCATTERED SHOWERS. LOWS
40 TO 45. HIGHS 63 TO 68. NORTHWEST WINDS 5 TO 10 MPH.
TUESDAY
MOSTLY CLEAR. LOWS 41 TO 46. HIGHS 69 TO 74. SOUTHEAST
WINDS 5 TO 10 MPH.
WEDNESDAY
MOSTLY CLEAR. LOWS 40 TO 45. HIGHS 69 TO 74. WEST
WINDS 5 TO 10 MPH.
THURSDAY
PARTLY CLOUDY. LOWS 39 TO 44. HIGHS 67 TO 72.
FRIDAY
PARTLY SUNNY. ISOLATED SHOWERS. HIGHS 65 TO 70.
WYZ284-262215-
BIGHORN NATIONAL FOREST-
1259 AM MDT SAT SEP 26 2026
TODAY
* SKY/WEATHER...........SUNNY.
* MAX TEMPERATURE.......60-65.
* 24 HR TREND.........1 DEGREE COOLER.
* MIN HUMIDITY..........28-33 PERCENT.
* 24 HR TREND.........UNCHANGED.
* WIND (20 FT)
* AT BURGESS JCT.......SOUTHWEST WINDS 5 TO 15 MPH WITH GUSTS TO
AROUND 30 MPH.
* CHANCE OF LIGHTNING...1 PERCENT.
* CWR...................ZERO.
TONIGHT
* SKY/WEATHER...........MOSTLY CLEAR.
* MIN TEMPERATURE.......34-39.
* 24 HR TREND.........5 DEGREES COOLER.
* MAX HUMIDITY..........69-74 PERCENT.
* 24 HR TREND.........1 PERCENT WETTER.
* WIND (20 FT)
* AT BURGESS JCT.......EAST WINDS 5 TO 10 MPH IN THE EVENING
SHIFTING TO THE SOUTHWEST OVERNIGHT.
* CHANCE OF LIGHTNING...2 PERCENT.
* CWR...................ZERO.
SUNDAY
* SKY/WEATHER...........PARTLY SUNNY.
* MAX TEMPERATURE.......59-64.
* 24 HR TREND.........1 DEGREE COOLER.
* MIN HUMIDITY..........34-39 PERCENT.
* 24 HR TREND.........6 PERCENT WETTER.
* WIND (20 FT)
* AT BURGESS JCT.......SOUTH WINDS 5 TO 10 MPH.
* CHANCE OF LIGHTNING...2 PERCENT.
* CWR...................ZERO.
FORECAST DAYS 3 THROUGH 7...
SUNDAY NIGHT
MOSTLY CLOUDY. SCATTERED SHOWERS. LOWS 35 TO 40.
SOUTH WINDS 5 TO 10 MPH.
MONDAY
MOSTLY CLOUDY. PATCHY FOG. NUMEROUS SHOWERS. LOWS 31 TO
36. HIGHS 52 TO 57. WEST WINDS 5 TO 10 MPH.
TUESDAY
MOSTLY CLEAR. LOWS 34 TO 39. HIGHS 56 TO 61. SOUTHWEST
WINDS 5 TO 10 MPH.
WEDNESDAY
MOSTLY CLEAR. LOWS 32 TO 37. HIGHS 56 TO 61. WEST
WINDS 5 TO 15 MPH.
THURSDAY
PARTLY CLOUDY. LOWS 33 TO 38. HIGHS 55 TO 60.
FRIDAY
PARTLY SUNNY. ISOLATED SHOWERS. HIGHS 53 TO 58.
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