927
FNUS55 KBYZ 230730
FWFBYZ
FIRE WEATHER PLANNING FORECAST FOR SCEN AND SERN MONTANA
NATIONAL WEATHER SERVICE BILLINGS MT
130 AM MDT SUN AUG 23 2026
..ELEVATED FIRE WEATHER CONDITIONS WEST OF BILLINGS TODAY
DISCUSSION
BREEZY SOUTHEAST WINDS WILL PERSIST OVER THE EASTERN
PLAINS/RIDGES THROUGH ABOUT 10Z THANKS TO A PERSISTENT LOW LEVEL
JET. ISOLATED TO SCATTERED SHOWERS AND THUNDERSHOWERS WILL DRIFT
EASTWARD OVER THE PLAINS INTO THE EARLY MORNING HOURS BEFORE
DIMINISHING TO SPRINKLES LATE. A FRONTAL PASSAGE FROM THE WEST IS
ANTICIPATED TODAY WITH A PUSH OF WIND AND TRIGGERING ISOLD/SCT
THUNDERSTORMS, TRACKING ACROSS IN THE AFTERNOON AND EVENING. FIRE
WEATHER CONDITIONS WILL THUS BE ELEVATED, ESPECIALLY FOR
DISTRICTS WEST OF YELLOWSTONE COUNTY, WITH RH READINGS DROPPING AS
LOW AS 18-25 PERCENT FOR MOST LOCATIONS. STRONGER CELLS WILL
PRODUCE STRONG WINDS POSSIBLY AS HIGH AS 55-65 MPH. BRIEF HEAVY
RAIN IS ALSO POSSIBLE. CONDITIONS TREND SOMEWHAT COOLER AND DRIER
NEXT WEEK, WITH JUST AN OCCASIONAL CHANCE OF PRECIPITATION. BT
MTZ123-232215-
GALLATIN NATIONAL FOREST-
130 AM MDT SUN AUG 23 2026
TODAY
* SKY/WEATHER...........PARTLY SUNNY. NUMEROUS RAIN SHOWERS AND
SCATTERED THUNDERSTORMS IN THE AFTERNOON.
* MAX TEMPERATURE.......81-89 AT 5000 FEET...68-78 AT 7000 FEET.
* 24 HR TREND.........2 DEGREES COOLER.
* MIN HUMIDITY..........23-28 PERCENT.
* 24 HR TREND.........4 PERCENT DRIER.
* WIND (20 FT)
* SLOPE/VALLEY.........SOUTH WINDS 5 TO 15 MPH.
* RIDGETOP.............SOUTHWEST 15 TO 30 MPH.
* CHANCE OF LIGHTNING...36 PERCENT.
* CWR...................30 PERCENT.
TONIGHT
* SKY/WEATHER...........MOSTLY CLEAR.
* MIN TEMPERATURE.......48-58 AT 5000 FEET...43-53 AT 7000 FEET.
* 24 HR TREND.........6 DEGREES COOLER.
* MAX HUMIDITY..........53-58 PERCENT.
* 24 HR TREND.........17 PERCENT DRIER.
* WIND (20 FT)
* SLOPE/VALLEY.........SOUTHWEST WINDS 5 TO 15 MPH IN THE EVENING
SHIFTING TO THE EAST 5 TO 10 MPH OVERNIGHT.
* RIDGETOP.............WEST 15 TO 25 MPH.
* CHANCE OF LIGHTNING...8 PERCENT.
* CWR...................ZERO.
MONDAY
* SKY/WEATHER...........MOSTLY SUNNY.
* MAX TEMPERATURE.......78-88 AT 5000 FEET...66-76 AT 7000 FEET.
* 24 HR TREND.........1 DEGREE COOLER.
* MIN HUMIDITY..........17-22 PERCENT.
* 24 HR TREND.........6 PERCENT DRIER.
* WIND (20 FT)
* SLOPE/VALLEY.........LIGHT WINDS IN THE MORNING BECOMING
NORTHWEST 5 TO 10 MPH IN THE AFTERNOON.
* RIDGETOP.............WEST 10 TO 20 MPH.
* CHANCE OF LIGHTNING...0 PERCENT.
* CWR...................ZERO.
FORECAST DAYS 3 THROUGH 7...
MONDAY NIGHT
MOSTLY CLOUDY. LOWS 47 TO 57. SOUTH WINDS 5 TO
10 MPH.
TUESDAY
PARTLY CLOUDY. ISOLATED SHOWERS AND THUNDERSTORMS.
LOWS 49 TO 59. HIGHS 77 TO 87. SOUTHWEST WINDS 5 TO 10 MPH.
WEDNESDAY
MOSTLY CLOUDY. SCATTERED SHOWERS AND ISOLATED
THUNDERSTORMS. LOWS 51 TO 61. HIGHS 79 TO 89. SOUTHWEST WINDS
5 TO 10 MPH.
THURSDAY
MOSTLY CLOUDY. SCATTERED SHOWERS AND ISOLATED
THUNDERSTORMS. LOWS 50 TO 60. HIGHS 81 TO 89. SOUTH WINDS 5 TO
10 MPH.
FRIDAY
PARTLY CLOUDY. ISOLATED SHOWERS. LOWS 50 TO 60. HIGHS
79 TO 87.
SATURDAY
MOSTLY SUNNY. ISOLATED SHOWERS AND THUNDERSTORMS.
HIGHS 78 TO 86.
MTZ124-232215-
WHEATLAND COUNTY/SWEET GRASS COUNTY-
130 AM MDT SUN AUG 23 2026
TODAY
* SKY/WEATHER...........MOSTLY SUNNY. SCATTERED SHOWERS AND
THUNDERSTORMS IN THE AFTERNOON.
* MAX TEMPERATURE.......88-93.
* 24 HR TREND.........5 DEGREES WARMER.
* MIN HUMIDITY..........16-21 PERCENT.
* 24 HR TREND.........15 PERCENT DRIER.
* WIND (20 FT)
* PLAINS...............WEST WINDS 10 TO 20 MPH. GUSTS UP TO 30 MPH
IN THE AFTERNOON.
* CHANCE OF LIGHTNING...27 PERCENT.
* CWR...................ZERO.
TONIGHT
* SKY/WEATHER...........MOSTLY CLEAR.
* MIN TEMPERATURE.......52-57.
* 24 HR TREND.........6 DEGREES COOLER.
* MAX HUMIDITY..........54-59 PERCENT.
* 24 HR TREND.........19 PERCENT DRIER.
* WIND (20 FT)
* PLAINS...............WEST WINDS 10 TO 20 MPH. GUSTS UP TO 30 MPH
IN THE EVENING.
* CHANCE OF LIGHTNING...8 PERCENT.
* CWR...................ZERO.
MONDAY
* SKY/WEATHER...........SUNNY.
* MAX TEMPERATURE.......82-87.
* 24 HR TREND.........6 DEGREES COOLER.
* MIN HUMIDITY..........14-19 PERCENT.
* 24 HR TREND.........2 PERCENT DRIER.
* WIND (20 FT)
* PLAINS...............NORTHWEST WINDS 10 TO 20 MPH.
* CHANCE OF LIGHTNING...0 PERCENT.
* CWR...................ZERO.
FORECAST DAYS 3 THROUGH 7...
MONDAY NIGHT
PARTLY CLOUDY. LOWS 49 TO 54. NORTHWEST WINDS
5 TO 15 MPH.
TUESDAY
PARTLY CLOUDY. LOWS 51 TO 56. HIGHS 80 TO 85. EAST
WINDS 5 TO 15 MPH.
WEDNESDAY
MOSTLY CLOUDY. SCATTERED SHOWERS AND ISOLATED
THUNDERSTORMS. LOWS 53 TO 58. HIGHS 83 TO 88. SOUTHEAST WINDS
5 TO 10 MPH.
THURSDAY
PARTLY CLOUDY. ISOLATED SHOWERS AND THUNDERSTORMS.
LOWS 52 TO 57. HIGHS 87 TO 92. SOUTHWEST WINDS 5 TO 15 MPH.
FRIDAY
PARTLY CLOUDY. LOWS 53 TO 58. HIGHS 84 TO 89.
SATURDAY
MOSTLY SUNNY. HIGHS 83 TO 88.
MTZ125-232215-
STILLWATER COUNTY-
130 AM MDT SUN AUG 23 2026
TODAY
* SKY/WEATHER...........MOSTLY SUNNY. SCATTERED SHOWERS AND
THUNDERSTORMS IN THE AFTERNOON.
* MAX TEMPERATURE.......90-95.
* 24 HR TREND.........7 DEGREES WARMER.
* MIN HUMIDITY..........17-22 PERCENT.
* 24 HR TREND.........12 PERCENT DRIER.
* WIND (20 FT)
* PLAINS...............WEST WINDS 5 TO 10 MPH.
* CHANCE OF LIGHTNING...29 PERCENT.
* CWR...................20 PERCENT.
TONIGHT
* SKY/WEATHER...........MOSTLY CLOUDY WITH ISOLATED SHOWERS AND
THUNDERSTORMS IN THE EVENING, THEN MOSTLY CLEAR OVERNIGHT.
* MIN TEMPERATURE.......57-62.
* 24 HR TREND.........4 DEGREES COOLER.
* MAX HUMIDITY..........55-60 PERCENT.
* 24 HR TREND.........7 PERCENT DRIER.
* WIND (20 FT)
* PLAINS...............WEST WINDS 5 TO 10 MPH.
* CHANCE OF LIGHTNING...19 PERCENT.
* CWR...................LESS THAN 10 PERCENT.
MONDAY
* SKY/WEATHER...........SUNNY.
* MAX TEMPERATURE.......83-88.
* 24 HR TREND.........7 DEGREES COOLER.
* MIN HUMIDITY..........17-22 PERCENT.
* 24 HR TREND.........UNCHANGED.
* WIND (20 FT)
* PLAINS...............LIGHT WINDS IN THE MORNING BECOMING
NORTHEAST 5 TO 10 MPH IN THE AFTERNOON.
* CHANCE OF LIGHTNING...2 PERCENT.
* CWR...................ZERO.
FORECAST DAYS 3 THROUGH 7...
MONDAY NIGHT
PARTLY CLOUDY. LOWS 54 TO 59. WEST WINDS 5 TO
10 MPH.
TUESDAY
PARTLY CLOUDY. SCATTERED SHOWERS. LOWS 54 TO 59. HIGHS
79 TO 84. SOUTHEAST WINDS 5 TO 10 MPH.
WEDNESDAY
MOSTLY CLOUDY. SCATTERED SHOWERS AND ISOLATED
THUNDERSTORMS. LOWS 56 TO 61. HIGHS 84 TO 89. SOUTHWEST WINDS
5 TO 10 MPH.
THURSDAY
PARTLY CLOUDY. SCATTERED SHOWERS AND ISOLATED
THUNDERSTORMS. LOWS 56 TO 61. HIGHS 88 TO 93. SOUTHWEST WINDS
5 TO 10 MPH.
FRIDAY
PARTLY CLOUDY. ISOLATED SHOWERS. LOWS 55 TO 60. HIGHS
85 TO 90.
SATURDAY
MOSTLY SUNNY. ISOLATED SHOWERS. HIGHS 85 TO 90.
MTZ126-232215-
BEARTOOTH RANGER DISTRICT CUSTER NATIONAL FOREST-
130 AM MDT SUN AUG 23 2026
TODAY
* SKY/WEATHER...........MOSTLY SUNNY. ISOLATED SHOWERS AND
THUNDERSTORMS IN THE AFTERNOON.
* MAX TEMPERATURE.......82-92 AT 5000 FEET...74-84 AT 7000 FEET.
* 24 HR TREND.........3 DEGREES WARMER.
* MIN HUMIDITY..........18-28 PERCENT AT 5000 FEET...21-31 PERCENT
AT 7000 FEET.
* 24 HR TREND.........5 PERCENT DRIER.
* WIND (20 FT)
* SLOPE/VALLEY.........WEST WINDS 5 TO 15 MPH.
* RIDGETOP.............WEST 10 TO 20 MPH.
* CHANCE OF LIGHTNING...18 PERCENT.
* CWR...................ZERO.
TONIGHT
* SKY/WEATHER...........PARTLY CLOUDY. ISOLATED SHOWERS AND
THUNDERSTORMS IN THE EVENING.
* MIN TEMPERATURE.......58-64 AT 5000 FEET...48-58 AT 7000 FEET.
* 24 HR TREND.........6 DEGREES COOLER.
* MAX HUMIDITY..........49-54 PERCENT.
* 24 HR TREND.........9 PERCENT DRIER.
* WIND (20 FT)
* SLOPE/VALLEY.........WEST WINDS 5 TO 15 MPH.
* RIDGETOP.............WEST 10 TO 20 MPH.
* CHANCE OF LIGHTNING...19 PERCENT.
* CWR...................ZERO.
MONDAY
* SKY/WEATHER...........MOSTLY SUNNY.
* MAX TEMPERATURE.......77-85 AT 5000 FEET...68-78 AT 7000 FEET.
* 24 HR TREND.........6 DEGREES COOLER.
* MIN HUMIDITY..........27-32 PERCENT.
* 24 HR TREND.........1 PERCENT WETTER.
* WIND (20 FT)
* SLOPE/VALLEY.........NORTH WINDS 5 TO 15 MPH.
* RIDGETOP.............WEST 10 TO 20 MPH.
* CHANCE OF LIGHTNING...3 PERCENT.
* CWR...................ZERO.
FORECAST DAYS 3 THROUGH 7...
MONDAY NIGHT
MOSTLY CLOUDY. LOWS 54 TO 61. NORTHWEST WINDS
5 TO 10 MPH.
TUESDAY
MOSTLY CLOUDY. NUMEROUS SHOWERS AND SCATTERED
THUNDERSTORMS. LOWS 55 TO 61. HIGHS 75 TO 83. NORTHWEST WINDS
5 TO 10 MPH.
WEDNESDAY
MOSTLY CLOUDY. SCATTERED SHOWERS AND THUNDERSTORMS.
LOWS 57 TO 64. HIGHS 78 TO 87. SOUTHWEST WINDS 5 TO 10 MPH.
THURSDAY
MOSTLY CLOUDY. SCATTERED SHOWERS AND ISOLATED
THUNDERSTORMS. LOWS 56 TO 63. HIGHS 80 TO 89. WEST WINDS 5 TO
15 MPH.
FRIDAY
PARTLY CLOUDY. ISOLATED SHOWERS. LOWS 56 TO 63. HIGHS
78 TO 87.
SATURDAY
MOSTLY SUNNY. ISOLATED SHOWERS AND THUNDERSTORMS.
HIGHS 78 TO 86.
MTZ127-232215-
GOLDEN VALLEY COUNTY/MUSSELSHELL COUNTY-
130 AM MDT SUN AUG 23 2026
TODAY
* SKY/WEATHER...........MOSTLY SUNNY. SCATTERED SHOWERS AND
THUNDERSTORMS IN THE AFTERNOON.
* MAX TEMPERATURE.......88-93.
* 24 HR TREND.........3 DEGREES WARMER.
* MIN HUMIDITY..........21-26 PERCENT.
* 24 HR TREND.........1 PERCENT DRIER.
* WIND (20 FT)
* PLAINS...............WEST WINDS 5 TO 15 MPH.
* CHANCE OF LIGHTNING...25 PERCENT.
* CWR...................ZERO.
TONIGHT
* SKY/WEATHER...........PARTLY CLOUDY. SCATTERED RAIN SHOWERS AND
ISOLATED THUNDERSTORMS IN THE EVENING.
* MIN TEMPERATURE.......60-65.
* 24 HR TREND.........6 DEGREES COOLER.
* MAX HUMIDITY..........53-58 PERCENT.
* 24 HR TREND.........UNCHANGED.
* WIND (20 FT)
* PLAINS...............NORTHWEST WINDS 5 TO 15 MPH.
* CHANCE OF LIGHTNING...20 PERCENT.
* CWR...................ZERO.
MONDAY
* SKY/WEATHER...........SUNNY.
* MAX TEMPERATURE.......79-84.
* 24 HR TREND.........9 DEGREES COOLER.
* MIN HUMIDITY..........19-24 PERCENT.
* 24 HR TREND.........2 PERCENT DRIER.
* WIND (20 FT)
* PLAINS...............NORTHWEST WINDS 5 TO 10 MPH.
* CHANCE OF LIGHTNING...0 PERCENT.
* CWR...................ZERO.
FORECAST DAYS 3 THROUGH 7...
MONDAY NIGHT
PARTLY CLOUDY. LOWS 56 TO 61. NORTH WINDS 5 TO
15 MPH.
TUESDAY
MOSTLY CLEAR. LOWS 57 TO 62. HIGHS 76 TO 81. NORTHEAST
WINDS 5 TO 10 MPH.
WEDNESDAY
PARTLY CLOUDY. LOWS 61 TO 66. HIGHS 81 TO 86. EAST
WINDS 5 TO 15 MPH.
THURSDAY
MOSTLY CLOUDY. ISOLATED SHOWERS. LOWS 61 TO 66. HIGHS
85 TO 90. SOUTH WINDS 5 TO 10 MPH.
FRIDAY
PARTLY CLOUDY. LOWS 60 TO 65. HIGHS 82 TO 87.
SATURDAY
MOSTLY SUNNY. HIGHS 81 TO 86.
MTZ128-232215-
YELLOWSTONE COUNTY-
130 AM MDT SUN AUG 23 2026
TODAY
* SKY/WEATHER...........MOSTLY SUNNY. SCATTERED SHOWERS AND
THUNDERSTORMS IN THE AFTERNOON.
* MAX TEMPERATURE.......93-98.
* 24 HR TREND.........4 DEGREES WARMER.
* MIN HUMIDITY..........19-24 PERCENT.
* 24 HR TREND.........2 PERCENT DRIER.
* WIND (20 FT)
* PLAINS...............WEST WINDS 5 TO 15 MPH.
* CHANCE OF LIGHTNING...31 PERCENT.
* CWR...................20 PERCENT.
TONIGHT
* SKY/WEATHER...........PARTLY CLOUDY. ISOLATED SHOWERS AND
THUNDERSTORMS IN THE EVENING.
* MIN TEMPERATURE.......60-65.
* 24 HR TREND.........5 DEGREES COOLER.
* MAX HUMIDITY..........60-65 PERCENT.
* 24 HR TREND.........3 PERCENT DRIER.
* WIND (20 FT)
* PLAINS...............WEST WINDS 5 TO 15 MPH.
* CHANCE OF LIGHTNING...20 PERCENT.
* CWR...................LESS THAN 10 PERCENT.
MONDAY
* SKY/WEATHER...........MOSTLY SUNNY.
* MAX TEMPERATURE.......86-91.
* 24 HR TREND.........7 DEGREES COOLER.
* MIN HUMIDITY..........18-23 PERCENT.
* 24 HR TREND.........1 PERCENT DRIER.
* WIND (20 FT)
* PLAINS...............NORTHWEST WINDS 5 TO 10 MPH IN THE MORNING
SHIFTING TO THE NORTHEAST IN THE AFTERNOON.
* CHANCE OF LIGHTNING...0 PERCENT.
* CWR...................ZERO.
FORECAST DAYS 3 THROUGH 7...
MONDAY NIGHT
PARTLY CLOUDY. LOWS 58 TO 63. NORTHEAST WINDS
5 TO 15 MPH.
TUESDAY
PARTLY CLOUDY. LOWS 59 TO 64. HIGHS 83 TO 88.
NORTHEAST WINDS 5 TO 15 MPH.
WEDNESDAY
PARTLY CLOUDY. ISOLATED SHOWERS. LOWS 61 TO 66.
HIGHS 88 TO 93. EAST WINDS 5 TO 10 MPH.
THURSDAY
MOSTLY CLOUDY. ISOLATED SHOWERS. LOWS 60 TO 65. HIGHS
91 TO 96. SOUTHWEST WINDS 5 TO 10 MPH.
FRIDAY
PARTLY CLOUDY. LOWS 60 TO 65. HIGHS 89 TO 94.
SATURDAY
MOSTLY SUNNY. HIGHS 87 TO 92.
MTZ129-232215-
CROW INDIAN RESERVATION/BIGHORN CANYON REC AREA-
130 AM MDT SUN AUG 23 2026
TODAY
* SKY/WEATHER...........MOSTLY SUNNY. ISOLATED SHOWERS AND
THUNDERSTORMS IN THE AFTERNOON.
* MAX TEMPERATURE.......83-93 AT 5000 FEET...75-82 AT 7000 FEET.
* 24 HR TREND.........3 DEGREES WARMER.
* MIN HUMIDITY..........21-28 PERCENT AT 5000 FEET...25-30 PERCENT
AT 7000 FEET.
* 24 HR TREND.........13 PERCENT DRIER.
* WIND (20 FT)
* SLOPE/VALLEY.........NORTHWEST WINDS 5 TO 15 MPH.
* RIDGETOP.............WEST 15 TO 25 MPH.
* CHANCE OF LIGHTNING...17 PERCENT.
* CWR...................ZERO.
TONIGHT
* SKY/WEATHER...........PARTLY CLOUDY. SCATTERED RAIN SHOWERS AND
ISOLATED THUNDERSTORMS IN THE EVENING.
* MIN TEMPERATURE.......58-63 AT 5000 FEET...55-60 AT 7000 FEET.
* 24 HR TREND.........5 DEGREES COOLER.
* MAX HUMIDITY..........53-63 PERCENT AT 5000 FEET...51-59 PERCENT
AT 7000 FEET.
* 24 HR TREND.........2 PERCENT WETTER.
* WIND (20 FT)
* SLOPE/VALLEY.........SOUTHWEST WINDS 5 TO 10 MPH.
* RIDGETOP.............WEST 10 TO 20 MPH.
* CHANCE OF LIGHTNING...20 PERCENT.
* CWR...................LESS THAN 10 PERCENT.
MONDAY
* SKY/WEATHER...........MOSTLY SUNNY.
* MAX TEMPERATURE.......76-86 AT 5000 FEET...69-76 AT 7000 FEET.
* 24 HR TREND.........7 DEGREES COOLER.
* MIN HUMIDITY..........19-29 PERCENT AT 5000 FEET...24-31 PERCENT
AT 7000 FEET.
* 24 HR TREND.........3 PERCENT DRIER.
* WIND (20 FT)
* SLOPE/VALLEY.........NORTH WINDS 5 TO 15 MPH.
* RIDGETOP.............WEST 15 TO 25 MPH.
* CHANCE OF LIGHTNING...0 PERCENT.
* CWR...................ZERO.
FORECAST DAYS 3 THROUGH 7...
MONDAY NIGHT
PARTLY CLOUDY. LOWS 56 TO 61. NORTHEAST WINDS
5 TO 10 MPH.
TUESDAY
PARTLY CLOUDY. LOWS 56 TO 61. HIGHS 73 TO 83.
NORTHEAST WINDS 5 TO 10 MPH.
WEDNESDAY
PARTLY CLOUDY. LOWS 59 TO 64. HIGHS 78 TO 88.
SOUTHEAST WINDS 5 TO 10 MPH.
THURSDAY
PARTLY CLOUDY. ISOLATED SHOWERS. LOWS 59 TO 64. HIGHS
81 TO 91. SOUTH WINDS 5 TO 10 MPH.
FRIDAY
PARTLY CLOUDY. LOWS 59 TO 64. HIGHS 78 TO 88.
SATURDAY
MOSTLY SUNNY. HIGHS 77 TO 87.
MTZ130-232215-
NORTHERN ROSEBUD/NORTHERN TREASURE COUNTIES-
130 AM MDT SUN AUG 23 2026
TODAY
* SKY/WEATHER...........MOSTLY SUNNY.
* MAX TEMPERATURE.......95-100.
* 24 HR TREND.........2 DEGREES WARMER.
* MIN HUMIDITY..........21-26 PERCENT.
* 24 HR TREND.........1 PERCENT WETTER.
* WIND (20 FT)
* PLAINS...............WEST WINDS 5 TO 15 MPH.
* CHANCE OF LIGHTNING...5 PERCENT.
* CWR...................ZERO.
TONIGHT
* SKY/WEATHER...........PARTLY CLOUDY. SCATTERED SHOWERS AND
THUNDERSTORMS IN THE EVENING.
* MIN TEMPERATURE.......61-66.
* 24 HR TREND.........5 DEGREES COOLER.
* MAX HUMIDITY..........64-69 PERCENT.
* 24 HR TREND.........10 PERCENT DRIER.
* WIND (20 FT)
* PLAINS...............WEST WINDS 5 TO 10 MPH.
* CHANCE OF LIGHTNING...26 PERCENT.
* CWR...................ZERO.
MONDAY
* SKY/WEATHER...........SUNNY.
* MAX TEMPERATURE.......84-89.
* 24 HR TREND.........11 DEGREES COOLER.
* MIN HUMIDITY..........19-24 PERCENT.
* 24 HR TREND.........2 PERCENT DRIER.
* WIND (20 FT)
* PLAINS...............NORTHWEST WINDS 5 TO 15 MPH.
* CHANCE OF LIGHTNING...0 PERCENT.
* CWR...................ZERO.
FORECAST DAYS 3 THROUGH 7...
MONDAY NIGHT
PARTLY CLOUDY. LOWS 55 TO 60. NORTH WINDS 5 TO
10 MPH.
TUESDAY
MOSTLY CLEAR. LOWS 55 TO 60. HIGHS 83 TO 88. NORTH
WINDS 5 TO 10 MPH.
WEDNESDAY
MOSTLY CLEAR. LOWS 59 TO 64. HIGHS 87 TO 92. EAST
WINDS 5 TO 10 MPH.
THURSDAY
PARTLY CLOUDY. ISOLATED SHOWERS. LOWS 60 TO 65. HIGHS
92 TO 97. EAST WINDS 5 TO 10 MPH.
FRIDAY
PARTLY CLOUDY. LOWS 59 TO 64. HIGHS 89 TO 94.
SATURDAY
MOSTLY SUNNY. HIGHS 88 TO 93.
MTZ131-232215-
NORTHERN CHEYENNE INDIAN RESERVATION/ASHLAND RANGER DISTRICT
CUSTER NATL FOREST-
130 AM MDT SUN AUG 23 2026
TODAY
* SKY/WEATHER...........MOSTLY SUNNY.
* MAX TEMPERATURE.......92-97.
* 24 HR TREND.........3 DEGREES WARMER.
* MIN HUMIDITY..........18-23 PERCENT.
* 24 HR TREND.........9 PERCENT DRIER.
* WIND (20 FT)
* SLOPE/VALLEY.........NORTHWEST WINDS 5 TO 15 MPH.
* RIDGETOP.............WEST 15 TO 25 MPH.
* CHANCE OF LIGHTNING...7 PERCENT.
* CWR...................ZERO.
TONIGHT
* SKY/WEATHER...........PARTLY CLOUDY. ISOLATED SHOWERS AND
THUNDERSTORMS IN THE EVENING.
* MIN TEMPERATURE.......59-64.
* 24 HR TREND.........4 DEGREES COOLER.
* MAX HUMIDITY..........67-72 PERCENT.
* 24 HR TREND.........9 PERCENT DRIER.
* WIND (20 FT)
* SLOPE/VALLEY.........WEST WINDS 5 TO 10 MPH.
* RIDGETOP.............WEST 10 TO 20 MPH.
* CHANCE OF LIGHTNING...23 PERCENT.
* CWR...................ZERO.
MONDAY
* SKY/WEATHER...........MOSTLY SUNNY.
* MAX TEMPERATURE.......84-89.
* 24 HR TREND.........8 DEGREES COOLER.
* MIN HUMIDITY..........17-22 PERCENT.
* 24 HR TREND.........1 PERCENT DRIER.
* WIND (20 FT)
* SLOPE/VALLEY.........NORTH WINDS 5 TO 15 MPH.
* RIDGETOP.............WEST 15 TO 25 MPH.
* CHANCE OF LIGHTNING...0 PERCENT.
* CWR...................ZERO.
FORECAST DAYS 3 THROUGH 7...
MONDAY NIGHT
PARTLY CLOUDY. LOWS 53 TO 58. NORTHEAST WINDS
5 TO 10 MPH.
TUESDAY
MOSTLY CLEAR. LOWS 52 TO 57. HIGHS 83 TO 88. NORTH
WINDS 5 TO 10 MPH.
WEDNESDAY
PARTLY CLOUDY. LOWS 57 TO 62. HIGHS 86 TO 91. EAST
WINDS 5 TO 10 MPH.
THURSDAY
PARTLY CLOUDY. ISOLATED SHOWERS AND THUNDERSTORMS.
LOWS 57 TO 62. HIGHS 91 TO 96. SOUTHEAST WINDS 5 TO 10 MPH.
FRIDAY
PARTLY CLOUDY. LOWS 57 TO 62. HIGHS 89 TO 94.
SATURDAY
MOSTLY SUNNY. HIGHS 88 TO 93.
MTZ132-232215-
CUSTER COUNTY-
130 AM MDT SUN AUG 23 2026
TODAY
* SKY/WEATHER...........MOSTLY SUNNY.
* MAX TEMPERATURE.......91-96.
* 24 HR TREND.........3 DEGREES WARMER.
* MIN HUMIDITY..........28-33 PERCENT.
* 24 HR TREND.........6 PERCENT WETTER.
* WIND (20 FT)
* PLAINS...............SOUTHWEST WINDS 5 TO 15 MPH.
* CHANCE OF LIGHTNING...12 PERCENT.
* CWR...................ZERO.
TONIGHT
* SKY/WEATHER...........PARTLY CLOUDY. SCATTERED RAIN SHOWERS AND
ISOLATED THUNDERSTORMS IN THE EVENING.
* MIN TEMPERATURE.......62-67.
* 24 HR TREND.........3 DEGREES COOLER.
* MAX HUMIDITY..........71-76 PERCENT.
* 24 HR TREND.........1 PERCENT WETTER.
* WIND (20 FT)
* PLAINS...............WEST WINDS 5 TO 10 MPH.
* CHANCE OF LIGHTNING...24 PERCENT.
* CWR...................ZERO.
MONDAY
* SKY/WEATHER...........SUNNY.
* MAX TEMPERATURE.......83-88.
* 24 HR TREND.........8 DEGREES COOLER.
* MIN HUMIDITY..........18-23 PERCENT.
* 24 HR TREND.........10 PERCENT DRIER.
* WIND (20 FT)
* PLAINS...............NORTHWEST WINDS 5 TO 15 MPH.
* CHANCE OF LIGHTNING...0 PERCENT.
* CWR...................ZERO.
FORECAST DAYS 3 THROUGH 7...
MONDAY NIGHT
MOSTLY CLEAR. LOWS 56 TO 61. NORTHWEST WINDS 5 TO
15 MPH.
TUESDAY
MOSTLY CLEAR. LOWS 54 TO 59. HIGHS 80 TO 85. NORTHWEST
WINDS 5 TO 15 MPH.
WEDNESDAY
MOSTLY CLEAR. LOWS 57 TO 62. HIGHS 82 TO 87. EAST
WINDS 5 TO 10 MPH.
THURSDAY
PARTLY CLOUDY. ISOLATED SHOWERS AND THUNDERSTORMS.
LOWS 60 TO 65. HIGHS 87 TO 92. SOUTHEAST WINDS 5 TO 15 MPH.
FRIDAY
PARTLY CLOUDY. ISOLATED SHOWERS AND THUNDERSTORMS. LOWS
58 TO 63. HIGHS 86 TO 91.
SATURDAY
MOSTLY SUNNY. ISOLATED SHOWERS. HIGHS 86 TO 91.
MTZ133-232215-
SIOUX RANGER DISTRICT CUSTER NATIONAL FOREST-
130 AM MDT SUN AUG 23 2026
TODAY
* SKY/WEATHER...........MOSTLY SUNNY.
* MAX TEMPERATURE.......90-95.
* 24 HR TREND.........6 DEGREES WARMER.
* MIN HUMIDITY..........27-32 PERCENT.
* 24 HR TREND.........2 PERCENT DRIER.
* WIND (20 FT)
* PLAINS...............SOUTHWEST WINDS 5 TO 15 MPH.
* CHANCE OF LIGHTNING...8 PERCENT.
* CWR...................ZERO.
TONIGHT
* SKY/WEATHER...........PARTLY CLOUDY.
* MIN TEMPERATURE.......61-66.
* 24 HR TREND.........1 DEGREE COOLER.
* MAX HUMIDITY..........75-80 PERCENT.
* 24 HR TREND.........7 PERCENT DRIER.
* WIND (20 FT)
* PLAINS...............NORTHWEST WINDS 5 TO 15 MPH IN THE EVENING
SHIFTING TO THE SOUTHWEST OVERNIGHT.
* CHANCE OF LIGHTNING...14 PERCENT.
* CWR...................ZERO.
MONDAY
* SKY/WEATHER...........MOSTLY SUNNY.
* MAX TEMPERATURE.......87-92.
* 24 HR TREND.........3 DEGREES COOLER.
* MIN HUMIDITY..........22-27 PERCENT.
* 24 HR TREND.........5 PERCENT DRIER.
* WIND (20 FT)
* PLAINS...............NORTHWEST WINDS 10 TO 20 MPH.
* CHANCE OF LIGHTNING...2 PERCENT.
* CWR...................ZERO.
FORECAST DAYS 3 THROUGH 7...
MONDAY NIGHT
PARTLY CLOUDY. LOWS 56 TO 61. NORTHWEST WINDS
5 TO 15 MPH.
TUESDAY
MOSTLY CLEAR. LOWS 54 TO 59. HIGHS 83 TO 88. NORTHWEST
WINDS 5 TO 15 MPH WITH GUSTS TO AROUND 30 MPH.
WEDNESDAY
MOSTLY CLEAR. LOWS 55 TO 60. HIGHS 84 TO 89.
NORTHEAST WINDS 5 TO 10 MPH.
THURSDAY
PARTLY CLOUDY. ISOLATED SHOWERS AND THUNDERSTORMS.
LOWS 57 TO 62. HIGHS 87 TO 92. SOUTHEAST WINDS 5 TO 15 MPH.
FRIDAY
PARTLY CLOUDY. ISOLATED SHOWERS AND THUNDERSTORMS. LOWS
57 TO 62. HIGHS 87 TO 92.
SATURDAY
MOSTLY SUNNY. HIGHS 88 TO 93.
WYZ274-232215-
SHERIDAN COUNTY-
130 AM MDT SUN AUG 23 2026
TODAY
* SKY/WEATHER...........MOSTLY SUNNY. SCATTERED RAIN SHOWERS AND
ISOLATED THUNDERSTORMS IN THE AFTERNOON.
* MAX TEMPERATURE.......90-95.
* 24 HR TREND.........2 DEGREES WARMER.
* MIN HUMIDITY..........21-26 PERCENT.
* 24 HR TREND.........12 PERCENT DRIER.
* WIND (20 FT)
* SLOPE/VALLEY.........LIGHT WINDS IN THE MORNING BECOMING
NORTHWEST 5 TO 10 MPH IN THE AFTERNOON.
* RIDGETOP.............WEST 10 TO 20 MPH.
* CHANCE OF LIGHTNING...18 PERCENT.
* CWR...................ZERO.
TONIGHT
* SKY/WEATHER...........PARTLY CLOUDY. ISOLATED SHOWERS AND
THUNDERSTORMS IN THE EVENING.
* MIN TEMPERATURE.......55-60.
* 24 HR TREND.........5 DEGREES COOLER.
* MAX HUMIDITY..........67-72 PERCENT.
* 24 HR TREND.........2 PERCENT DRIER.
* WIND (20 FT)
* SLOPE/VALLEY.........WEST WINDS 5 TO 10 MPH.
* RIDGETOP.............WEST 10 TO 20 MPH.
* CHANCE OF LIGHTNING...18 PERCENT.
* CWR...................ZERO.
MONDAY
* SKY/WEATHER...........MOSTLY SUNNY.
* MAX TEMPERATURE.......84-89.
* 24 HR TREND.........6 DEGREES COOLER.
* MIN HUMIDITY..........22-27 PERCENT.
* 24 HR TREND.........1 PERCENT WETTER.
* WIND (20 FT)
* SLOPE/VALLEY.........NORTH WINDS 5 TO 10 MPH.
* RIDGETOP.............WEST 15 TO 25 MPH.
* CHANCE OF LIGHTNING...3 PERCENT.
* CWR...................ZERO.
FORECAST DAYS 3 THROUGH 7...
MONDAY NIGHT
PARTLY CLOUDY. LOWS 51 TO 56. NORTHWEST WINDS
5 TO 10 MPH.
TUESDAY
PARTLY CLOUDY. ISOLATED SHOWERS. LOWS 50 TO 55. HIGHS
82 TO 87. LIGHT WINDS.
WEDNESDAY
PARTLY CLOUDY. ISOLATED SHOWERS AND THUNDERSTORMS.
LOWS 53 TO 58. HIGHS 85 TO 90. SOUTHEAST WINDS 5 TO 10 MPH.
THURSDAY
PARTLY CLOUDY. LOWS 53 TO 58. HIGHS 88 TO 93.
SOUTHWEST WINDS 5 TO 10 MPH.
FRIDAY
PARTLY CLOUDY. LOWS 53 TO 58. HIGHS 87 TO 92.
SATURDAY
MOSTLY SUNNY. HIGHS 86 TO 91.
WYZ284-232215-
BIGHORN NATIONAL FOREST-
130 AM MDT SUN AUG 23 2026
TODAY
* SKY/WEATHER...........MOSTLY SUNNY. SCATTERED RAIN SHOWERS AND
ISOLATED THUNDERSTORMS IN THE AFTERNOON.
* MAX TEMPERATURE.......72-77.
* 24 HR TREND.........UNCHANGED.
* MIN HUMIDITY..........26-31 PERCENT.
* 24 HR TREND.........1 PERCENT DRIER.
* WIND (20 FT)
* AT BURGESS JCT.......WEST WINDS 10 TO 20 MPH.
* CHANCE OF LIGHTNING...20 PERCENT.
* CWR...................LESS THAN 10 PERCENT.
TONIGHT
* SKY/WEATHER...........PARTLY CLOUDY. ISOLATED SHOWERS AND
THUNDERSTORMS IN THE EVENING.
* MIN TEMPERATURE.......46-51.
* 24 HR TREND.........4 DEGREES COOLER.
* MAX HUMIDITY..........73-78 PERCENT.
* 24 HR TREND.........3 PERCENT DRIER.
* WIND (20 FT)
* AT BURGESS JCT.......SOUTHWEST WINDS 5 TO 15 MPH.
* CHANCE OF LIGHTNING...18 PERCENT.
* CWR...................LESS THAN 10 PERCENT.
MONDAY
* SKY/WEATHER...........MOSTLY SUNNY.
* MAX TEMPERATURE.......68-73.
* 24 HR TREND.........4 DEGREES COOLER.
* MIN HUMIDITY..........23-28 PERCENT.
* 24 HR TREND.........3 PERCENT DRIER.
* WIND (20 FT)
* AT BURGESS JCT.......NORTHWEST WINDS 5 TO 15 MPH.
* CHANCE OF LIGHTNING...0 PERCENT.
* CWR...................ZERO.
FORECAST DAYS 3 THROUGH 7...
MONDAY NIGHT
PARTLY CLOUDY. LOWS 42 TO 47. SOUTHWEST WINDS
5 TO 10 MPH.
TUESDAY
PARTLY CLOUDY. SCATTERED SHOWERS AND ISOLATED
THUNDERSTORMS. LOWS 42 TO 47. HIGHS 66 TO 71. NORTHWEST WINDS
5 TO 10 MPH.
WEDNESDAY
MOSTLY CLOUDY. SCATTERED SHOWERS AND THUNDERSTORMS.
LOWS 44 TO 49. HIGHS 68 TO 73. SOUTH WINDS 5 TO 10 MPH.
THURSDAY
PARTLY CLOUDY. ISOLATED SHOWERS AND THUNDERSTORMS.
LOWS 45 TO 50. HIGHS 70 TO 75. SOUTHWEST WINDS 5 TO 15 MPH.
FRIDAY
PARTLY CLOUDY. ISOLATED SHOWERS. LOWS 45 TO 50. HIGHS
70 TO 75.
SATURDAY
MOSTLY SUNNY. HIGHS 69 TO 74.
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