617
FNUS55 KBYZ 230701
FWFBYZ
FIRE WEATHER PLANNING FORECAST FOR SCEN AND SERN MONTANA
NATIONAL WEATHER SERVICE BILLINGS MT
101 AM MDT SAT MAY 23 2026
DISCUSSION
..HOT TEMPERATURES (AROUND 90) AND LOW RH VALUES SUN-TUE
..PRE-FRONTAL DAY ON TUESDAY WITH GUSTY WINDS DEVELOPING
..COOLER AND UNSETTLED PATTERN WEDNESDAY-SATURDAY
WARMER AND MAINLY DRY CONDITIONS EXPECTED THROUGH THE HOLIDAY
WEEKEND. TEMPERATURES CLIMB TO NEAR 90 DEGREES FOR
SUNDAY/MONDAY/TUESDAY, WITH AFTERNOON RH VALUES DROPPING INTO THE
TEENS. AFTERNOON WIND GUSTS HOLD UNDER 20 MPH UNTIL POSSIBLY
TUESDAY (A PRE-FRONTAL DAY). A MULTI-DAY SPRING STORM SYSTEM
CONTINUES TO BE ADVERTISED FOR MID TO LATE WEEK, WITH INCREASING
CHANCES FOR WIDESPREAD PRECIPITATION, THUNDERSTORMS, AND AT LEAST
A SLIGHT CHANCE FOR LOCALLY HEAVY RAINFALL. CHAMBERS
MTZ123-232215-
GALLATIN NATIONAL FOREST-
101 AM MDT SAT MAY 23 2026
TODAY
* SKY/WEATHER...........MOSTLY SUNNY.
* MAX TEMPERATURE.......65-75 AT 5000 FEET...54-64 AT 7000 FEET.
* 24 HR TREND.........8 DEGREES WARMER.
* MIN HUMIDITY..........18-26 PERCENT AT 5000 FEET...27-37 PERCENT
AT 7000 FEET.
* 24 HR TREND.........3 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 10 TO 20 MPH.
* CHANCE OF LIGHTNING...1 PERCENT.
* CWR...................ZERO.
TONIGHT
* SKY/WEATHER...........MOSTLY CLEAR. ISOLATED RAIN SHOWERS IN THE
EVENING.
* MIN TEMPERATURE.......40-50 AT 5000 FEET...36-46 AT 7000 FEET.
* 24 HR TREND.........6 DEGREES WARMER.
* MAX HUMIDITY..........50-60 PERCENT AT 5000 FEET...55-65 PERCENT
AT 7000 FEET.
* 24 HR TREND.........11 PERCENT DRIER.
* WIND (20 FT)
* SLOPE/VALLEY.........WEST WINDS 5 TO 10 MPH IN THE EVENING
SHIFTING TO THE SOUTHEAST OVERNIGHT.
* RIDGETOP.............WEST 10 TO 20 MPH.
* CHANCE OF LIGHTNING...2 PERCENT.
* CWR...................ZERO.
SUNDAY
* SKY/WEATHER...........MOSTLY SUNNY.
* MAX TEMPERATURE.......73-83 AT 5000 FEET...61-71 AT 7000 FEET.
* 24 HR TREND.........7 DEGREES WARMER.
* MIN HUMIDITY..........15-22 PERCENT AT 5000 FEET...21-31 PERCENT
AT 7000 FEET.
* 24 HR TREND.........2 PERCENT DRIER.
* WIND (20 FT)
* SLOPE/VALLEY.........SOUTHWEST WINDS 5 TO 10 MPH.
* RIDGETOP.............WEST 15 TO 25 MPH.
* CHANCE OF LIGHTNING...1 PERCENT.
* CWR...................ZERO.
FORECAST DAYS 3 THROUGH 7...
SUNDAY NIGHT
PARTLY CLOUDY. LOWS 46 TO 56. SOUTHWEST WINDS
5 TO 10 MPH.
MONDAY
PARTLY CLOUDY. ISOLATED SHOWERS AND THUNDERSTORMS. LOWS
48 TO 58. HIGHS 77 TO 87. SOUTH WINDS 5 TO 10 MPH.
TUESDAY
MOSTLY CLOUDY. NUMEROUS SHOWERS AND SCATTERED
THUNDERSTORMS. LOWS 44 TO 54. HIGHS 75 TO 85. SOUTH WINDS 5 TO
10 MPH WITH GUSTS TO AROUND 30 MPH.
WEDNESDAY
COOLER. MOSTLY CLOUDY. SHOWERS AND SCATTERED
THUNDERSTORMS. LOWS 43 TO 53. HIGHS 64 TO 74. NORTH WINDS 5 TO
10 MPH.
THURSDAY
MOSTLY CLOUDY. NUMEROUS SHOWERS AND ISOLATED
THUNDERSTORMS. LOWS 44 TO 54. HIGHS 68 TO 78.
FRIDAY
PARTLY SUNNY. NUMEROUS SHOWERS AND ISOLATED
THUNDERSTORMS. HIGHS 69 TO 77.
MTZ124-232215-
WHEATLAND COUNTY/SWEET GRASS COUNTY-
101 AM MDT SAT MAY 23 2026
TODAY
* SKY/WEATHER...........SUNNY. ISOLATED RAIN SHOWERS IN THE
AFTERNOON.
* MAX TEMPERATURE.......70-75.
* 24 HR TREND.........8 DEGREES WARMER.
* MIN HUMIDITY..........23-28 PERCENT.
* 24 HR TREND.........3 PERCENT WETTER.
* WIND (20 FT)
* PLAINS...............WEST WINDS 10 TO 20 MPH.
* CHANCE OF LIGHTNING...12 PERCENT.
* CWR...................ZERO.
TONIGHT
* SKY/WEATHER...........PARTLY CLOUDY. ISOLATED RAIN SHOWERS IN THE
EVENING.
* MIN TEMPERATURE.......41-46.
* 24 HR TREND.........5 DEGREES WARMER.
* MAX HUMIDITY..........57-62 PERCENT.
* 24 HR TREND.........12 PERCENT DRIER.
* WIND (20 FT)
* PLAINS...............WEST WINDS 5 TO 15 MPH.
* CHANCE OF LIGHTNING...4 PERCENT.
* CWR...................ZERO.
SUNDAY
* SKY/WEATHER...........MOSTLY SUNNY.
* MAX TEMPERATURE.......78-83.
* 24 HR TREND.........8 DEGREES WARMER.
* MIN HUMIDITY..........17-22 PERCENT.
* 24 HR TREND.........6 PERCENT DRIER.
* WIND (20 FT)
* PLAINS...............WEST WINDS 10 TO 20 MPH.
* CHANCE OF LIGHTNING...1 PERCENT.
* CWR...................ZERO.
FORECAST DAYS 3 THROUGH 7...
SUNDAY NIGHT
PARTLY CLOUDY. LOWS 46 TO 51. WEST WINDS 5 TO
15 MPH.
MONDAY
MOSTLY CLEAR. ISOLATED SHOWERS. LOWS 48 TO 53. HIGHS
82 TO 87. SOUTH WINDS 5 TO 15 MPH.
TUESDAY
MOSTLY CLOUDY. SHOWERS AND SCATTERED THUNDERSTORMS.
LOWS 47 TO 52. HIGHS 81 TO 86. SOUTHEAST WINDS 5 TO 15 MPH WITH
GUSTS TO AROUND 30 MPH.
WEDNESDAY
NOT AS WARM. MOSTLY CLOUDY. NUMEROUS SHOWERS AND
SCATTERED THUNDERSTORMS. LOWS 45 TO 50. HIGHS 68 TO 73. NORTH
WINDS 10 TO 20 MPH.
THURSDAY
MOSTLY CLOUDY. SCATTERED SHOWERS AND THUNDERSTORMS.
LOWS 46 TO 51. HIGHS 70 TO 75.
FRIDAY
PARTLY SUNNY. SCATTERED SHOWERS AND THUNDERSTORMS.
HIGHS 73 TO 78.
MTZ125-232215-
STILLWATER COUNTY-
101 AM MDT SAT MAY 23 2026
TODAY
* SKY/WEATHER...........MOSTLY SUNNY.
* MAX TEMPERATURE.......71-76.
* 24 HR TREND.........9 DEGREES WARMER.
* MIN HUMIDITY..........23-28 PERCENT.
* 24 HR TREND.........1 PERCENT DRIER.
* WIND (20 FT)
* PLAINS...............SOUTH WINDS 5 TO 10 MPH.
* CHANCE OF LIGHTNING...6 PERCENT.
* CWR...................ZERO.
TONIGHT
* SKY/WEATHER...........MOSTLY CLEAR.
* MIN TEMPERATURE.......44-49.
* 24 HR TREND.........6 DEGREES WARMER.
* MAX HUMIDITY..........53-58 PERCENT.
* 24 HR TREND.........9 PERCENT DRIER.
* WIND (20 FT)
* PLAINS...............SOUTHWEST WINDS 5 TO 10 MPH.
* CHANCE OF LIGHTNING...3 PERCENT.
* CWR...................ZERO.
SUNDAY
* SKY/WEATHER...........MOSTLY SUNNY.
* MAX TEMPERATURE.......79-84.
* 24 HR TREND.........8 DEGREES WARMER.
* MIN HUMIDITY..........20-25 PERCENT.
* 24 HR TREND.........3 PERCENT DRIER.
* WIND (20 FT)
* PLAINS...............SOUTHEAST WINDS 5 TO 10 MPH.
* CHANCE OF LIGHTNING...2 PERCENT.
* CWR...................ZERO.
FORECAST DAYS 3 THROUGH 7...
SUNDAY NIGHT
PARTLY CLOUDY. LOWS 49 TO 54. SOUTH WINDS 5 TO
15 MPH.
MONDAY
PARTLY CLOUDY. ISOLATED SHOWERS AND THUNDERSTORMS. LOWS
51 TO 56. HIGHS 84 TO 89. SOUTH WINDS 5 TO 10 MPH.
TUESDAY
MOSTLY CLOUDY. NUMEROUS SHOWERS AND ISOLATED
THUNDERSTORMS. LOWS 50 TO 55. HIGHS 84 TO 89. SOUTH WINDS 5 TO
15 MPH.
WEDNESDAY
NOT AS WARM. MOSTLY CLOUDY. SHOWERS AND SCATTERED
THUNDERSTORMS. LOWS 49 TO 54. HIGHS 71 TO 76. WEST WINDS 5 TO
10 MPH.
THURSDAY
MOSTLY CLOUDY. SCATTERED SHOWERS AND THUNDERSTORMS.
LOWS 49 TO 54. HIGHS 74 TO 79.
FRIDAY
PARTLY SUNNY. NUMEROUS SHOWERS AND SCATTERED
THUNDERSTORMS. HIGHS 76 TO 81.
MTZ126-232215-
BEARTOOTH RANGER DISTRICT CUSTER NATIONAL FOREST-
101 AM MDT SAT MAY 23 2026
TODAY
* SKY/WEATHER...........MOSTLY SUNNY. ISOLATED RAIN SHOWERS AND
SNOW SHOWERS IN THE MORNING, THEN SCATTERED RAIN SHOWERS IN THE
AFTERNOON.
* MAX TEMPERATURE.......64-73 AT 5000 FEET...55-65 AT 7000 FEET.
* 24 HR TREND.........9 DEGREES WARMER.
* MIN HUMIDITY..........24-30 PERCENT AT 5000 FEET...29-39 PERCENT
AT 7000 FEET.
* 24 HR TREND.........4 PERCENT DRIER.
* WIND (20 FT)
* SLOPE/VALLEY.........WEST WINDS 5 TO 15 MPH.
* RIDGETOP.............WEST 5 TO 15 MPH.
* CHANCE OF LIGHTNING...8 PERCENT.
* CWR...................ZERO.
TONIGHT
* SKY/WEATHER...........MOSTLY CLEAR.
* MIN TEMPERATURE.......45-53 AT 5000 FEET...38-48 AT 7000 FEET.
* 24 HR TREND.........6 DEGREES WARMER.
* MAX HUMIDITY..........43-53 PERCENT AT 5000 FEET...47-57 PERCENT
AT 7000 FEET.
* 24 HR TREND.........12 PERCENT DRIER.
* WIND (20 FT)
* SLOPE/VALLEY.........WEST WINDS 10 TO 20 MPH.
* RIDGETOP.............WEST 5 TO 15 MPH.
* CHANCE OF LIGHTNING...2 PERCENT.
* CWR...................ZERO.
SUNDAY
* SKY/WEATHER...........SUNNY.
* MAX TEMPERATURE.......72-82 AT 5000 FEET...63-73 AT 7000 FEET.
* 24 HR TREND.........8 DEGREES WARMER.
* MIN HUMIDITY..........18-24 PERCENT AT 5000 FEET...22-32 PERCENT
AT 7000 FEET.
* 24 HR TREND.........11 PERCENT DRIER.
* WIND (20 FT)
* SLOPE/VALLEY.........WEST WINDS 5 TO 15 MPH.
* RIDGETOP.............WEST 5 TO 15 MPH.
* CHANCE OF LIGHTNING...3 PERCENT.
* CWR...................ZERO.
FORECAST DAYS 3 THROUGH 7...
SUNDAY NIGHT
MOSTLY CLEAR. LOWS 50 TO 60. SOUTHWEST WINDS
10 TO 20 MPH.
MONDAY
PARTLY CLOUDY. SCATTERED SHOWERS AND ISOLATED
THUNDERSTORMS. LOWS 52 TO 62. HIGHS 78 TO 88. SOUTHWEST WINDS
10 TO 20 MPH.
TUESDAY
MOSTLY CLOUDY. SHOWERS AND SCATTERED THUNDERSTORMS.
LOWS 50 TO 59. HIGHS 78 TO 88. SOUTH WINDS 5 TO 15 MPH WITH GUSTS
TO AROUND 30 MPH.
WEDNESDAY
COOLER. MOSTLY CLOUDY. SHOWERS AND SCATTERED
THUNDERSTORMS. LOWS 49 TO 56. HIGHS 67 TO 75. NORTHWEST WINDS
5 TO 15 MPH.
THURSDAY
MOSTLY CLOUDY. NUMEROUS SHOWERS AND ISOLATED
THUNDERSTORMS. LOWS 49 TO 57. HIGHS 68 TO 76.
FRIDAY
PARTLY SUNNY. NUMEROUS SHOWERS AND SCATTERED
THUNDERSTORMS. HIGHS 70 TO 79.
MTZ127-232215-
GOLDEN VALLEY COUNTY/MUSSELSHELL COUNTY-
101 AM MDT SAT MAY 23 2026
TODAY
* SKY/WEATHER...........MOSTLY SUNNY.
* MAX TEMPERATURE.......70-75.
* 24 HR TREND.........10 DEGREES WARMER.
* MIN HUMIDITY..........23-28 PERCENT.
* 24 HR TREND.........1 PERCENT WETTER.
* WIND (20 FT)
* PLAINS...............WEST WINDS 5 TO 15 MPH.
* CHANCE OF LIGHTNING...9 PERCENT.
* CWR...................ZERO.
TONIGHT
* SKY/WEATHER...........PARTLY CLOUDY.
* MIN TEMPERATURE.......50-55.
* 24 HR TREND.........6 DEGREES WARMER.
* MAX HUMIDITY..........47-52 PERCENT.
* 24 HR TREND.........7 PERCENT DRIER.
* WIND (20 FT)
* PLAINS...............EAST WINDS 5 TO 10 MPH IN THE EVENING
SHIFTING TO THE SOUTHWEST 5 TO 15 MPH OVERNIGHT.
* CHANCE OF LIGHTNING...3 PERCENT.
* CWR...................ZERO.
SUNDAY
* SKY/WEATHER...........MOSTLY SUNNY.
* MAX TEMPERATURE.......79-84.
* 24 HR TREND.........9 DEGREES WARMER.
* MIN HUMIDITY..........14-19 PERCENT.
* 24 HR TREND.........9 PERCENT DRIER.
* WIND (20 FT)
* PLAINS...............WEST WINDS 10 TO 20 MPH.
* CHANCE OF LIGHTNING...0 PERCENT.
* CWR...................ZERO.
FORECAST DAYS 3 THROUGH 7...
SUNDAY NIGHT
PARTLY CLOUDY. LOWS 57 TO 62. WEST WINDS 5 TO
10 MPH.
MONDAY
MOSTLY CLEAR. LOWS 62 TO 67. HIGHS 83 TO 88. SOUTH
WINDS 5 TO 15 MPH.
TUESDAY
MOSTLY CLOUDY. SCATTERED SHOWERS AND ISOLATED
THUNDERSTORMS. LOWS 59 TO 64. HIGHS 85 TO 90. SOUTH WINDS 5 TO
15 MPH WITH GUSTS TO AROUND 30 MPH.
WEDNESDAY
NOT AS WARM. MOSTLY CLOUDY. NUMEROUS SHOWERS AND
SCATTERED THUNDERSTORMS. LOWS 55 TO 60. HIGHS 72 TO 77. NORTH
WINDS 5 TO 15 MPH.
THURSDAY
PARTLY CLOUDY. SCATTERED SHOWERS AND ISOLATED
THUNDERSTORMS. LOWS 56 TO 61. HIGHS 72 TO 77.
FRIDAY
PARTLY SUNNY. SCATTERED SHOWERS AND ISOLATED
THUNDERSTORMS. HIGHS 75 TO 80.
MTZ128-232215-
YELLOWSTONE COUNTY-
101 AM MDT SAT MAY 23 2026
TODAY
* SKY/WEATHER...........SUNNY.
* MAX TEMPERATURE.......75-80.
* 24 HR TREND.........10 DEGREES WARMER.
* MIN HUMIDITY..........20-25 PERCENT.
* 24 HR TREND.........UNCHANGED.
* WIND (20 FT)
* PLAINS...............WEST WINDS 5 TO 15 MPH.
* CHANCE OF LIGHTNING...3 PERCENT.
* CWR...................ZERO.
TONIGHT
* SKY/WEATHER...........MOSTLY CLEAR.
* MIN TEMPERATURE.......47-52.
* 24 HR TREND.........6 DEGREES WARMER.
* MAX HUMIDITY..........56-61 PERCENT.
* 24 HR TREND.........6 PERCENT DRIER.
* WIND (20 FT)
* PLAINS...............SOUTHWEST WINDS 5 TO 15 MPH.
* CHANCE OF LIGHTNING...3 PERCENT.
* CWR...................ZERO.
SUNDAY
* SKY/WEATHER...........MOSTLY SUNNY.
* MAX TEMPERATURE.......84-89.
* 24 HR TREND.........9 DEGREES WARMER.
* MIN HUMIDITY..........14-19 PERCENT.
* 24 HR TREND.........6 PERCENT DRIER.
* WIND (20 FT)
* PLAINS...............SOUTHWEST WINDS 5 TO 15 MPH.
* CHANCE OF LIGHTNING...0 PERCENT.
* CWR...................ZERO.
FORECAST DAYS 3 THROUGH 7...
SUNDAY NIGHT
PARTLY CLOUDY. LOWS 53 TO 58. SOUTHWEST WINDS
5 TO 15 MPH.
MONDAY
MOSTLY CLEAR. LOWS 56 TO 61. HIGHS 88 TO 93. SOUTH
WINDS 5 TO 15 MPH.
TUESDAY
MOSTLY CLOUDY. NUMEROUS SHOWERS AND SCATTERED
THUNDERSTORMS. LOWS 55 TO 60. HIGHS 90 TO 95. SOUTHWEST WINDS
5 TO 15 MPH.
WEDNESDAY
NOT AS WARM. MOSTLY CLOUDY. NUMEROUS SHOWERS AND
SCATTERED THUNDERSTORMS. LOWS 52 TO 57. HIGHS 77 TO 82. NORTH
WINDS 5 TO 15 MPH.
THURSDAY
PARTLY CLOUDY. SCATTERED SHOWERS AND ISOLATED
THUNDERSTORMS. LOWS 53 TO 58. HIGHS 78 TO 83.
FRIDAY
PARTLY SUNNY. SCATTERED SHOWERS AND ISOLATED
THUNDERSTORMS. HIGHS 80 TO 85.
MTZ129-232215-
CROW INDIAN RESERVATION/BIGHORN CANYON REC AREA-
101 AM MDT SAT MAY 23 2026
TODAY
* SKY/WEATHER...........SUNNY. ISOLATED RAIN SHOWERS IN THE
AFTERNOON.
* MAX TEMPERATURE.......63-73 AT 5000 FEET...57-64 AT 7000 FEET.
* 24 HR TREND.........9 DEGREES WARMER.
* MIN HUMIDITY..........22-31 PERCENT AT 5000 FEET...30-35 PERCENT
AT 7000 FEET.
* 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...10 PERCENT.
* CWR...................ZERO.
TONIGHT
* SKY/WEATHER...........PARTLY CLOUDY.
* MIN TEMPERATURE.......46-54 AT 5000 FEET...44-49 AT 7000 FEET.
* 24 HR TREND.........9 DEGREES WARMER.
* MAX HUMIDITY..........44-54 PERCENT AT 5000 FEET...43-51 PERCENT
AT 7000 FEET.
* 24 HR TREND.........14 PERCENT DRIER.
* WIND (20 FT)
* SLOPE/VALLEY.........SOUTH WINDS 5 TO 10 MPH.
* RIDGETOP.............WEST 10 TO 20 MPH.
* CHANCE OF LIGHTNING...2 PERCENT.
* CWR...................ZERO.
SUNDAY
* SKY/WEATHER...........MOSTLY SUNNY.
* MAX TEMPERATURE.......72-82 AT 5000 FEET...65-72 AT 7000 FEET.
* 24 HR TREND.........9 DEGREES WARMER.
* MIN HUMIDITY..........18-25 PERCENT AT 5000 FEET...22-27 PERCENT
AT 7000 FEET.
* 24 HR TREND.........6 PERCENT DRIER.
* WIND (20 FT)
* SLOPE/VALLEY.........WEST WINDS 5 TO 15 MPH.
* RIDGETOP.............WEST 15 TO 25 MPH.
* CHANCE OF LIGHTNING...0 PERCENT.
* CWR...................ZERO.
FORECAST DAYS 3 THROUGH 7...
SUNDAY NIGHT
MOSTLY CLEAR. LOWS 51 TO 61. SOUTH WINDS 5 TO
10 MPH.
MONDAY
MOSTLY CLEAR. LOWS 55 TO 65. HIGHS 77 TO 87. SOUTHEAST
WINDS 5 TO 15 MPH.
TUESDAY
PARTLY CLOUDY. SCATTERED SHOWERS AND ISOLATED
THUNDERSTORMS. LOWS 52 TO 62. HIGHS 78 TO 88. SOUTHEAST WINDS
10 TO 20 MPH WITH GUSTS TO AROUND 30 MPH.
WEDNESDAY
NOT AS WARM. MOSTLY CLOUDY. NUMEROUS SHOWERS AND
SCATTERED THUNDERSTORMS. LOWS 49 TO 58. HIGHS 66 TO 76. SOUTHEAST
WINDS 5 TO 15 MPH.
THURSDAY
PARTLY CLOUDY. SCATTERED SHOWERS AND ISOLATED
THUNDERSTORMS. LOWS 49 TO 59. HIGHS 68 TO 78.
FRIDAY
PARTLY SUNNY. SCATTERED SHOWERS AND ISOLATED
THUNDERSTORMS. HIGHS 70 TO 80.
MTZ130-232215-
NORTHERN ROSEBUD/NORTHERN TREASURE COUNTIES-
101 AM MDT SAT MAY 23 2026
TODAY
* SKY/WEATHER...........SUNNY.
* MAX TEMPERATURE.......73-78.
* 24 HR TREND.........6 DEGREES WARMER.
* MIN HUMIDITY..........24-29 PERCENT.
* 24 HR TREND.........1 PERCENT WETTER.
* WIND (20 FT)
* PLAINS...............SOUTHWEST WINDS 5 TO 10 MPH.
* CHANCE OF LIGHTNING...4 PERCENT.
* CWR...................ZERO.
TONIGHT
* SKY/WEATHER...........PARTLY CLOUDY.
* MIN TEMPERATURE.......45-50.
* 24 HR TREND.........7 DEGREES WARMER.
* MAX HUMIDITY..........64-69 PERCENT.
* 24 HR TREND.........10 PERCENT DRIER.
* WIND (20 FT)
* PLAINS...............SOUTHWEST WINDS 5 TO 10 MPH.
* CHANCE OF LIGHTNING...3 PERCENT.
* CWR...................ZERO.
SUNDAY
* SKY/WEATHER...........MOSTLY SUNNY.
* MAX TEMPERATURE.......83-88.
* 24 HR TREND.........10 DEGREES WARMER.
* MIN HUMIDITY..........15-20 PERCENT.
* 24 HR TREND.........9 PERCENT DRIER.
* WIND (20 FT)
* PLAINS...............WEST WINDS 5 TO 10 MPH.
* CHANCE OF LIGHTNING...0 PERCENT.
* CWR...................ZERO.
FORECAST DAYS 3 THROUGH 7...
SUNDAY NIGHT
PARTLY CLOUDY. LOWS 50 TO 55. SOUTH WINDS 5 TO
10 MPH.
MONDAY
MOSTLY CLEAR. LOWS 57 TO 62. HIGHS 88 TO 93. SOUTH
WINDS 5 TO 10 MPH.
TUESDAY
PARTLY CLOUDY. ISOLATED SHOWERS AND THUNDERSTORMS.
LOWS 59 TO 64. HIGHS 92 TO 97. SOUTHEAST WINDS 5 TO 15 MPH.
WEDNESDAY
NOT AS WARM. MOSTLY CLOUDY. SCATTERED SHOWERS AND
THUNDERSTORMS. LOWS 54 TO 59. HIGHS 81 TO 86. SOUTHEAST WINDS
5 TO 15 MPH.
THURSDAY
MOSTLY CLOUDY. SCATTERED SHOWERS AND ISOLATED
THUNDERSTORMS. LOWS 54 TO 59. HIGHS 79 TO 84.
FRIDAY
PARTLY SUNNY. SCATTERED SHOWERS AND ISOLATED
THUNDERSTORMS. HIGHS 81 TO 86.
MTZ131-232215-
NORTHERN CHEYENNE INDIAN RESERVATION/ASHLAND RANGER DISTRICT
CUSTER NATL FOREST-
101 AM MDT SAT MAY 23 2026
TODAY
* SKY/WEATHER...........SUNNY. ISOLATED RAIN SHOWERS IN THE
AFTERNOON.
* MAX TEMPERATURE.......74-79.
* 24 HR TREND.........10 DEGREES WARMER.
* MIN HUMIDITY..........19-24 PERCENT.
* 24 HR TREND.........7 PERCENT DRIER.
* WIND (20 FT)
* SLOPE/VALLEY.........SOUTHWEST WINDS 5 TO 10 MPH.
* RIDGETOP.............WEST 10 TO 20 MPH.
* CHANCE OF LIGHTNING...11 PERCENT.
* CWR...................ZERO.
TONIGHT
* SKY/WEATHER...........PARTLY CLOUDY.
* MIN TEMPERATURE.......43-48.
* 24 HR TREND.........7 DEGREES WARMER.
* MAX HUMIDITY..........55-60 PERCENT.
* 24 HR TREND.........14 PERCENT DRIER.
* WIND (20 FT)
* SLOPE/VALLEY.........SOUTHWEST WINDS 5 TO 10 MPH.
* RIDGETOP.............WEST 10 TO 20 MPH.
* CHANCE OF LIGHTNING...1 PERCENT.
* CWR...................ZERO.
SUNDAY
* SKY/WEATHER...........MOSTLY SUNNY.
* MAX TEMPERATURE.......82-87.
* 24 HR TREND.........8 DEGREES WARMER.
* MIN HUMIDITY..........14-19 PERCENT.
* 24 HR TREND.........5 PERCENT DRIER.
* WIND (20 FT)
* SLOPE/VALLEY.........WEST WINDS 5 TO 15 MPH.
* RIDGETOP.............WEST 15 TO 25 MPH.
* CHANCE OF LIGHTNING...0 PERCENT.
* CWR...................ZERO.
FORECAST DAYS 3 THROUGH 7...
SUNDAY NIGHT
MOSTLY CLEAR. LOWS 49 TO 54. SOUTH WINDS 5 TO
10 MPH.
MONDAY
MOSTLY CLEAR. LOWS 56 TO 61. HIGHS 89 TO 94. SOUTH
WINDS 5 TO 15 MPH.
TUESDAY
PARTLY CLOUDY. LOWS 56 TO 61. HIGHS 91 TO 96.
SOUTHEAST WINDS 10 TO 20 MPH WITH GUSTS TO AROUND 35 MPH.
WEDNESDAY
NOT AS WARM. MOSTLY CLOUDY. SCATTERED SHOWERS AND
THUNDERSTORMS. LOWS 51 TO 56. HIGHS 80 TO 85. SOUTHEAST WINDS
10 TO 20 MPH WITH GUSTS TO AROUND 30 MPH.
THURSDAY
MOSTLY CLOUDY. SCATTERED SHOWERS AND ISOLATED
THUNDERSTORMS. LOWS 51 TO 56. HIGHS 77 TO 82.
FRIDAY
PARTLY SUNNY. SCATTERED SHOWERS AND ISOLATED
THUNDERSTORMS. HIGHS 79 TO 84.
MTZ132-232215-
CUSTER COUNTY-
101 AM MDT SAT MAY 23 2026
TODAY
* SKY/WEATHER...........SUNNY.
* MAX TEMPERATURE.......71-76.
* 24 HR TREND.........9 DEGREES WARMER.
* MIN HUMIDITY..........23-28 PERCENT.
* 24 HR TREND.........6 PERCENT DRIER.
* WIND (20 FT)
* PLAINS...............SOUTHWEST WINDS 5 TO 10 MPH.
* CHANCE OF LIGHTNING...4 PERCENT.
* CWR...................ZERO.
TONIGHT
* SKY/WEATHER...........MOSTLY CLEAR.
* MIN TEMPERATURE.......47-52.
* 24 HR TREND.........9 DEGREES WARMER.
* MAX HUMIDITY..........58-63 PERCENT.
* 24 HR TREND.........17 PERCENT DRIER.
* WIND (20 FT)
* PLAINS...............SOUTH WINDS 5 TO 10 MPH.
* CHANCE OF LIGHTNING...1 PERCENT.
* CWR...................ZERO.
SUNDAY
* SKY/WEATHER...........MOSTLY SUNNY.
* MAX TEMPERATURE.......81-86.
* 24 HR TREND.........10 DEGREES WARMER.
* MIN HUMIDITY..........15-20 PERCENT.
* 24 HR TREND.........8 PERCENT DRIER.
* WIND (20 FT)
* PLAINS...............WEST WINDS 5 TO 15 MPH.
* CHANCE OF LIGHTNING...0 PERCENT.
* CWR...................ZERO.
FORECAST DAYS 3 THROUGH 7...
SUNDAY NIGHT
PARTLY CLOUDY. LOWS 51 TO 56. SOUTHWEST WINDS
5 TO 10 MPH.
MONDAY
MOSTLY CLEAR. LOWS 59 TO 64. HIGHS 88 TO 93. SOUTH
WINDS 5 TO 15 MPH.
TUESDAY
PARTLY CLOUDY. LOWS 61 TO 66. HIGHS 90 TO 95.
SOUTHEAST WINDS 15 TO 25 MPH WITH GUSTS TO AROUND 40 MPH.
WEDNESDAY
MOSTLY CLOUDY. SCATTERED SHOWERS AND ISOLATED
THUNDERSTORMS. LOWS 57 TO 62. HIGHS 81 TO 86. SOUTHEAST WINDS
15 TO 25 MPH WITH GUSTS TO AROUND 35 MPH.
THURSDAY
MOSTLY CLOUDY. SCATTERED SHOWERS AND THUNDERSTORMS.
LOWS 56 TO 61. HIGHS 77 TO 82.
FRIDAY
PARTLY SUNNY. ISOLATED SHOWERS AND THUNDERSTORMS. HIGHS
78 TO 83.
MTZ133-232215-
SIOUX RANGER DISTRICT CUSTER NATIONAL FOREST-
101 AM MDT SAT MAY 23 2026
TODAY
* SKY/WEATHER...........SUNNY.
* MAX TEMPERATURE.......71-76.
* 24 HR TREND.........11 DEGREES WARMER.
* MIN HUMIDITY..........27-32 PERCENT.
* 24 HR TREND.........7 PERCENT DRIER.
* WIND (20 FT)
* PLAINS...............WEST WINDS 5 TO 10 MPH.
* CHANCE OF LIGHTNING...9 PERCENT.
* CWR...................ZERO.
TONIGHT
* SKY/WEATHER...........MOSTLY CLEAR.
* MIN TEMPERATURE.......43-48.
* 24 HR TREND.........6 DEGREES WARMER.
* MAX HUMIDITY..........70-75 PERCENT.
* 24 HR TREND.........15 PERCENT DRIER.
* WIND (20 FT)
* PLAINS...............SOUTHWEST WINDS 5 TO 15 MPH.
* CHANCE OF LIGHTNING...3 PERCENT.
* CWR...................ZERO.
SUNDAY
* SKY/WEATHER...........SUNNY.
* MAX TEMPERATURE.......82-87.
* 24 HR TREND.........11 DEGREES WARMER.
* MIN HUMIDITY..........18-23 PERCENT.
* 24 HR TREND.........9 PERCENT DRIER.
* WIND (20 FT)
* PLAINS...............WEST WINDS 5 TO 15 MPH.
* CHANCE OF LIGHTNING...1 PERCENT.
* CWR...................ZERO.
FORECAST DAYS 3 THROUGH 7...
SUNDAY NIGHT
MOSTLY CLEAR. LOWS 48 TO 53. SOUTHWEST WINDS 5 TO
10 MPH.
MONDAY
MOSTLY CLEAR. LOWS 55 TO 60. HIGHS 87 TO 92. SOUTH
WINDS 5 TO 15 MPH.
TUESDAY
PARTLY CLOUDY. LOWS 58 TO 63. HIGHS 88 TO 93.
SOUTHEAST WINDS 15 TO 25 MPH WITH GUSTS TO AROUND 45 MPH.
WEDNESDAY
MOSTLY CLOUDY. SCATTERED SHOWERS AND THUNDERSTORMS.
LOWS 54 TO 59. HIGHS 80 TO 85. SOUTHEAST WINDS 15 TO 25 MPH WITH
GUSTS TO AROUND 45 MPH.
THURSDAY
MOSTLY CLOUDY. SCATTERED SHOWERS AND THUNDERSTORMS.
LOWS 52 TO 57. HIGHS 75 TO 80.
FRIDAY
PARTLY SUNNY. SCATTERED SHOWERS AND ISOLATED
THUNDERSTORMS. HIGHS 77 TO 82.
WYZ274-232215-
SHERIDAN COUNTY-
101 AM MDT SAT MAY 23 2026
TODAY
* SKY/WEATHER...........MOSTLY SUNNY. ISOLATED RAIN SHOWERS IN THE
AFTERNOON.
* MAX TEMPERATURE.......71-76.
* 24 HR TREND.........11 DEGREES WARMER.
* MIN HUMIDITY..........25-30 PERCENT.
* 24 HR TREND.........4 PERCENT DRIER.
* WIND (20 FT)
* SLOPE/VALLEY.........LIGHT WINDS IN THE MORNING BECOMING NORTH 5
TO 10 MPH IN THE AFTERNOON.
* RIDGETOP.............WEST 10 TO 20 MPH.
* CHANCE OF LIGHTNING...10 PERCENT.
* CWR...................ZERO.
TONIGHT
* SKY/WEATHER...........PARTLY CLOUDY.
* MIN TEMPERATURE.......38-43.
* 24 HR TREND.........6 DEGREES WARMER.
* MAX HUMIDITY..........68-73 PERCENT.
* 24 HR TREND.........9 PERCENT DRIER.
* WIND (20 FT)
* SLOPE/VALLEY.........SOUTHWEST WINDS 5 TO 10 MPH.
* RIDGETOP.............WEST 10 TO 20 MPH.
* CHANCE OF LIGHTNING...1 PERCENT.
* CWR...................ZERO.
SUNDAY
* SKY/WEATHER...........SUNNY.
* MAX TEMPERATURE.......81-86.
* 24 HR TREND.........10 DEGREES WARMER.
* MIN HUMIDITY..........20-25 PERCENT.
* 24 HR TREND.........5 PERCENT DRIER.
* WIND (20 FT)
* SLOPE/VALLEY.........LIGHT WINDS IN THE MORNING BECOMING NORTH 5
TO 10 MPH IN THE AFTERNOON.
* RIDGETOP.............WEST 10 TO 20 MPH.
* CHANCE OF LIGHTNING...4 PERCENT.
* CWR...................ZERO.
FORECAST DAYS 3 THROUGH 7...
SUNDAY NIGHT
MOSTLY CLEAR. LOWS 42 TO 47. SOUTH WINDS 5 TO
10 MPH.
MONDAY
MOSTLY CLEAR. LOWS 46 TO 51. HIGHS 86 TO 91. SOUTH
WINDS 5 TO 10 MPH.
TUESDAY
PARTLY CLOUDY. ISOLATED SHOWERS AND THUNDERSTORMS.
LOWS 47 TO 52. HIGHS 87 TO 92. SOUTH WINDS 10 TO 20 MPH WITH
GUSTS TO AROUND 35 MPH.
WEDNESDAY
NOT AS WARM. MOSTLY CLOUDY. NUMEROUS SHOWERS AND
SCATTERED THUNDERSTORMS. LOWS 45 TO 50. HIGHS 76 TO 81. SOUTHEAST
WINDS 5 TO 15 MPH.
THURSDAY
MOSTLY CLOUDY. SCATTERED SHOWERS AND ISOLATED
THUNDERSTORMS. LOWS 45 TO 50. HIGHS 76 TO 81.
FRIDAY
PARTLY SUNNY. SCATTERED SHOWERS AND ISOLATED
THUNDERSTORMS. HIGHS 78 TO 83.
WYZ284-232215-
BIGHORN NATIONAL FOREST-
101 AM MDT SAT MAY 23 2026
TODAY
* SKY/WEATHER...........MOSTLY SUNNY. ISOLATED RAIN SHOWERS IN THE
AFTERNOON.
* MAX TEMPERATURE.......53-58.
* 24 HR TREND.........9 DEGREES WARMER.
* MIN HUMIDITY..........30-35 PERCENT.
* 24 HR TREND.........9 PERCENT DRIER.
* WIND (20 FT)
* AT BURGESS JCT.......WEST WINDS 5 TO 15 MPH.
* CHANCE OF LIGHTNING...8 PERCENT.
* CWR...................ZERO.
TONIGHT
* SKY/WEATHER...........MOSTLY CLEAR.
* MIN TEMPERATURE.......35-40.
* 24 HR TREND.........8 DEGREES WARMER.
* MAX HUMIDITY..........59-64 PERCENT.
* 24 HR TREND.........11 PERCENT DRIER.
* WIND (20 FT)
* AT BURGESS JCT.......SOUTHWEST WINDS 5 TO 15 MPH.
* CHANCE OF LIGHTNING...3 PERCENT.
* CWR...................ZERO.
SUNDAY
* SKY/WEATHER...........SUNNY.
* MAX TEMPERATURE.......62-67.
* 24 HR TREND.........9 DEGREES WARMER.
* MIN HUMIDITY..........23-28 PERCENT.
* 24 HR TREND.........7 PERCENT DRIER.
* WIND (20 FT)
* AT BURGESS JCT.......WEST WINDS 10 TO 20 MPH.
* CHANCE OF LIGHTNING...4 PERCENT.
* CWR...................ZERO.
FORECAST DAYS 3 THROUGH 7...
SUNDAY NIGHT
MOSTLY CLEAR. LOWS 40 TO 45. SOUTHWEST WINDS 5 TO
15 MPH.
MONDAY
MOSTLY CLEAR. LOWS 45 TO 50. HIGHS 68 TO 73. SOUTHWEST
WINDS 10 TO 20 MPH WITH GUSTS TO AROUND 35 MPH.
TUESDAY
MOSTLY CLOUDY. SCATTERED SHOWERS AND ISOLATED
THUNDERSTORMS. LOWS 41 TO 46. HIGHS 69 TO 74. SOUTH WINDS 10 TO
20 MPH WITH GUSTS TO AROUND 35 MPH.
WEDNESDAY
COOLER. MOSTLY CLOUDY. SHOWERS AND SCATTERED
THUNDERSTORMS. LOWS 39 TO 44. HIGHS 59 TO 64. SOUTH WINDS 5 TO
10 MPH.
THURSDAY
MOSTLY CLOUDY. NUMEROUS SHOWERS AND ISOLATED
THUNDERSTORMS. LOWS 40 TO 45. HIGHS 60 TO 65.
FRIDAY
PARTLY SUNNY. NUMEROUS SHOWERS AND ISOLATED
THUNDERSTORMS. HIGHS 62 TO 67.
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