187
FNUS55 KBYZ 271914
FWFBYZ
FIRE WEATHER PLANNING FORECAST FOR SCEN AND SERN MONTANA
NATIONAL WEATHER SERVICE BILLINGS MT
114 PM MDT SUN SEP 27 2026
DISCUSSION
..WARM, DRY, BREEZY FOR FOOTHILLS WEST OF BILLINGS TUESDAY
ISOLATED TO SCATTERED SHOWERS AND THUNDERSTORMS ARE POSSIBLE THIS
EVENING INTO THE OVERNIGHT HOURS AND THEN AGAIN MONDAY AFTERNOON.
MAIN AREAS WILL BE THE BEARTOOTH/ABSAROKAS AND SE MT AND NW SD.
MAIN CONCERNS WILL BE HEAVY RAIN, SMALL HAIL AND GUSTY WINDS. INTO
TUESDAY, CONDITIONS WILL WARM AND DRY WITH BREEZY WEST WINDS
(GUSTS 25-35 MPH) FOR THE FOOTHILL AREAS WEST OF BILLINGS. DRY AND
SEASONABLE CONDITIONS ARE EXPECTED FOR THE REMAINDER OF THE WEEK.
TS
MTZ123-281015-
GALLATIN NATIONAL FOREST-
114 PM MDT SUN SEP 27 2026
TONIGHT
* SKY/WEATHER...........MOSTLY CLOUDY. ISOLATED RAIN SHOWERS
OVERNIGHT.
* MIN TEMPERATURE.......36-46 AT 5000 FEET...34-44 AT 7000 FEET.
* 24 HR TREND.........5 DEGREES WARMER.
* MAX HUMIDITY..........65-70 PERCENT.
* 24 HR TREND.........UNCHANGED.
* WIND (20 FT)
* SLOPE/VALLEY.........LIGHT WINDS.
* RIDGETOP.............SOUTHWEST 10 TO 20 MPH.
* CHANCE OF LIGHTNING...6 PERCENT.
* CWR...................LESS THAN 10 PERCENT.
MONDAY
* SKY/WEATHER...........PARTLY SUNNY. ISOLATED RAIN SHOWERS IN THE
MORNING, THEN SCATTERED RAIN SHOWERS AND ISOLATED THUNDERSTORMS
IN THE AFTERNOON.
* MAX TEMPERATURE.......62-71 AT 5000 FEET...51-61 AT 7000 FEET.
* 24 HR TREND.........UNCHANGED.
* MIN HUMIDITY..........40-50 PERCENT AT 5000 FEET...46-56 PERCENT
AT 7000 FEET.
* 24 HR TREND.........6 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 5 TO 15 MPH.
* CHANCE OF LIGHTNING...16 PERCENT.
* CWR...................LESS THAN 10 PERCENT.
MONDAY NIGHT
* SKY/WEATHER...........PARTLY CLOUDY.
* MIN TEMPERATURE.......36-46 AT 5000 FEET...32-42 AT 7000 FEET.
* 24 HR TREND.........2 DEGREES COOLER.
* MAX HUMIDITY..........75-85 PERCENT AT 5000 FEET...73-83 PERCENT
AT 7000 FEET.
* 24 HR TREND.........1 PERCENT WETTER.
* WIND (20 FT)
* SLOPE/VALLEY.........SOUTH WINDS 5 TO 10 MPH.
* RIDGETOP.............WEST 5 TO 10 MPH.
* CHANCE OF LIGHTNING...3 PERCENT.
* CWR...................ZERO.
TUESDAY
* SKY/WEATHER...........SUNNY.
* MAX TEMPERATURE.......67-76 AT 5000 FEET...55-65 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.........16 PERCENT DRIER.
* WIND (20 FT)
* SLOPE/VALLEY.........SOUTH WINDS 5 TO 10 MPH IN THE MORNING
SHIFTING TO THE WEST IN THE AFTERNOON.
* RIDGETOP.............WEST 10 TO 20 MPH.
* CHANCE OF LIGHTNING...0 PERCENT.
* CWR...................ZERO.
FORECAST DAYS 3 THROUGH 7...
TUESDAY NIGHT
MOSTLY CLEAR. LOWS 41 TO 51. SOUTHWEST WINDS
5 TO 10 MPH.
WEDNESDAY
MOSTLY CLEAR. LOWS 34 TO 43. HIGHS 64 TO 74. WEST
WINDS 5 TO 10 MPH.
THURSDAY
MOSTLY CLEAR. LOWS 36 TO 46. HIGHS 64 TO 74. SOUTH
WINDS 5 TO 10 MPH.
FRIDAY
PARTLY CLOUDY. LOWS 40 TO 50. HIGHS 67 TO 77. SOUTHWEST
WINDS 5 TO 10 MPH.
SATURDAY
PARTLY CLOUDY. LOWS 34 TO 44. HIGHS 63 TO 73.
SUNDAY
SUNNY. HIGHS 64 TO 74.
MTZ124-281015-
WHEATLAND COUNTY/SWEET GRASS COUNTY-
114 PM MDT SUN SEP 27 2026
TONIGHT
* SKY/WEATHER...........MOSTLY CLOUDY. ISOLATED RAIN SHOWERS IN THE
EVENING, THEN ISOLATED RAIN SHOWERS AND SNOW SHOWERS OVERNIGHT.
* MIN TEMPERATURE.......38-43.
* 24 HR TREND.........8 DEGREES WARMER.
* MAX HUMIDITY..........69-74 PERCENT.
* 24 HR TREND.........4 PERCENT DRIER.
* WIND (20 FT)
* PLAINS...............EAST WINDS 5 TO 15 MPH IN THE EVENING
SHIFTING TO THE WEST OVERNIGHT.
* CHANCE OF LIGHTNING...4 PERCENT.
* CWR...................LESS THAN 10 PERCENT.
MONDAY
* SKY/WEATHER...........MOSTLY CLOUDY WITH ISOLATED RAIN SHOWERS IN
THE MORNING, THEN SUNNY IN THE AFTERNOON.
* MAX TEMPERATURE.......69-74.
* 24 HR TREND.........12 DEGREES WARMER.
* MIN HUMIDITY..........25-30 PERCENT.
* 24 HR TREND.........6 PERCENT DRIER.
* WIND (20 FT)
* PLAINS...............NORTHWEST WINDS 5 TO 15 MPH.
* CHANCE OF LIGHTNING...3 PERCENT.
* CWR...................LESS THAN 10 PERCENT.
MONDAY NIGHT
* SKY/WEATHER...........MOSTLY CLEAR.
* MIN TEMPERATURE.......39-44.
* 24 HR TREND.........1 DEGREE WARMER.
* MAX HUMIDITY..........67-72 PERCENT.
* 24 HR TREND.........2 PERCENT DRIER.
* WIND (20 FT)
* PLAINS...............WEST WINDS 5 TO 15 MPH.
* CHANCE OF LIGHTNING...0 PERCENT.
* CWR...................ZERO.
TUESDAY
* SKY/WEATHER...........SUNNY.
* MAX TEMPERATURE.......72-77.
* 24 HR TREND.........3 DEGREES WARMER.
* MIN HUMIDITY..........18-23 PERCENT.
* 24 HR TREND.........7 PERCENT DRIER.
* WIND (20 FT)
* PLAINS...............WEST WINDS 15 TO 25 MPH. GUSTS UP TO 30 MPH
IN THE AFTERNOON.
* CHANCE OF LIGHTNING...0 PERCENT.
* CWR...................ZERO.
FORECAST DAYS 3 THROUGH 7...
TUESDAY NIGHT
PARTLY CLOUDY. LOWS 46 TO 51. WEST WINDS 10 TO
20 MPH.
WEDNESDAY
MOSTLY CLEAR. LOWS 37 TO 42. HIGHS 66 TO 71.
NORTHWEST WINDS 10 TO 20 MPH WITH GUSTS TO AROUND 35 MPH.
THURSDAY
MOSTLY CLEAR. LOWS 39 TO 44. HIGHS 64 TO 69. SOUTH
WINDS 5 TO 15 MPH.
FRIDAY
PARTLY CLOUDY. LOWS 43 TO 48. HIGHS 69 TO 74. SOUTHWEST
WINDS 5 TO 10 MPH.
SATURDAY
MOSTLY CLEAR. LOWS 38 TO 43. HIGHS 63 TO 68.
SUNDAY
SUNNY. HIGHS 65 TO 70.
MTZ125-281015-
STILLWATER COUNTY-
114 PM MDT SUN SEP 27 2026
TONIGHT
* SKY/WEATHER...........MOSTLY CLOUDY. ISOLATED RAIN SHOWERS
OVERNIGHT.
* MIN TEMPERATURE.......41-46.
* 24 HR TREND.........5 DEGREES WARMER.
* MAX HUMIDITY..........68-73 PERCENT.
* 24 HR TREND.........UNCHANGED.
* WIND (20 FT)
* PLAINS...............NORTHWEST WINDS 5 TO 10 MPH.
* CHANCE OF LIGHTNING...4 PERCENT.
* CWR...................LESS THAN 10 PERCENT.
MONDAY
* SKY/WEATHER...........MOSTLY CLOUDY. ISOLATED RAIN SHOWERS IN THE
MORNING, THEN SCATTERED RAIN SHOWERS AND ISOLATED THUNDERSTORMS
IN THE AFTERNOON.
* MAX TEMPERATURE.......66-71.
* 24 HR TREND.........8 DEGREES WARMER.
* MIN HUMIDITY..........37-42 PERCENT.
* 24 HR TREND.........4 PERCENT WETTER.
* WIND (20 FT)
* PLAINS...............SOUTH WINDS 5 TO 10 MPH IN THE MORNING
SHIFTING TO THE NORTHEAST IN THE AFTERNOON.
* CHANCE OF LIGHTNING...20 PERCENT.
* CWR...................20 PERCENT.
MONDAY NIGHT
* SKY/WEATHER...........PARTLY CLOUDY. ISOLATED RAIN SHOWERS IN THE
EVENING.
* MIN TEMPERATURE.......41-46.
* 24 HR TREND.........UNCHANGED.
* MAX HUMIDITY..........74-79 PERCENT.
* 24 HR TREND.........6 PERCENT WETTER.
* WIND (20 FT)
* PLAINS...............SOUTHWEST WINDS 5 TO 10 MPH.
* CHANCE OF LIGHTNING...11 PERCENT.
* CWR...................LESS THAN 10 PERCENT.
TUESDAY
* SKY/WEATHER...........SUNNY.
* MAX TEMPERATURE.......73-78.
* 24 HR TREND.........7 DEGREES WARMER.
* MIN HUMIDITY..........22-27 PERCENT.
* 24 HR TREND.........15 PERCENT DRIER.
* WIND (20 FT)
* PLAINS...............SOUTHWEST 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...
TUESDAY NIGHT
MOSTLY CLEAR. LOWS 45 TO 50. SOUTHWEST WINDS
5 TO 10 MPH.
WEDNESDAY
MOSTLY CLEAR. LOWS 39 TO 44. HIGHS 68 TO 73. NORTH
WINDS 5 TO 10 MPH.
THURSDAY
MOSTLY CLEAR. LOWS 41 TO 46. HIGHS 64 TO 69.
SOUTHEAST WINDS 5 TO 10 MPH.
FRIDAY
PARTLY CLOUDY. LOWS 45 TO 50. HIGHS 70 TO 75. SOUTH
WINDS 5 TO 10 MPH.
SATURDAY
PARTLY CLOUDY. LOWS 40 TO 45. HIGHS 65 TO 70.
SUNDAY
SUNNY. HIGHS 66 TO 71.
MTZ126-281015-
BEARTOOTH RANGER DISTRICT CUSTER NATIONAL FOREST-
114 PM MDT SUN SEP 27 2026
TONIGHT
* SKY/WEATHER...........MOSTLY CLOUDY. ISOLATED RAIN SHOWERS
OVERNIGHT.
* MIN TEMPERATURE.......42-52 AT 5000 FEET...39-49 AT 7000 FEET.
* 24 HR TREND.........8 DEGREES WARMER.
* MAX HUMIDITY..........58-68 PERCENT AT 5000 FEET...60-70 PERCENT
AT 7000 FEET.
* 24 HR TREND.........5 PERCENT DRIER.
* WIND (20 FT)
* SLOPE/VALLEY.........WEST WINDS 5 TO 10 MPH.
* RIDGETOP.............SOUTHWEST 10 TO 20 MPH.
* CHANCE OF LIGHTNING...4 PERCENT.
* CWR...................LESS THAN 10 PERCENT.
MONDAY
* SKY/WEATHER...........MOSTLY CLOUDY. SCATTERED RAIN SHOWERS IN
THE MORNING, THEN NUMEROUS RAIN SHOWERS AND ISOLATED
THUNDERSTORMS IN THE AFTERNOON.
* MAX TEMPERATURE.......62-69 AT 5000 FEET...55-65 AT 7000 FEET.
* 24 HR TREND.........3 DEGREES WARMER.
* MIN HUMIDITY..........37-47 PERCENT AT 5000 FEET...45-55 PERCENT
AT 7000 FEET.
* 24 HR TREND.........8 PERCENT WETTER.
* WIND (20 FT)
* SLOPE/VALLEY.........SOUTHWEST WINDS 5 TO 10 MPH IN THE MORNING
SHIFTING TO THE NORTHEAST IN THE AFTERNOON.
* RIDGETOP.............WEST 5 TO 15 MPH.
* CHANCE OF LIGHTNING...23 PERCENT.
* CWR...................20 PERCENT.
MONDAY NIGHT
* SKY/WEATHER...........MOSTLY CLOUDY WITH SCATTERED RAIN SHOWERS
IN THE EVENING, THEN MOSTLY CLEAR OVERNIGHT.
* MIN TEMPERATURE.......42-49 AT 5000 FEET...36-46 AT 7000 FEET.
* 24 HR TREND.........3 DEGREES COOLER.
* MAX HUMIDITY..........62-72 PERCENT AT 5000 FEET...69-79 PERCENT
AT 7000 FEET.
* 24 HR TREND.........13 PERCENT WETTER.
* WIND (20 FT)
* SLOPE/VALLEY.........SOUTHWEST WINDS 5 TO 15 MPH.
* RIDGETOP.............WEST 5 TO 15 MPH.
* CHANCE OF LIGHTNING...14 PERCENT.
* CWR...................10 PERCENT.
TUESDAY
* SKY/WEATHER...........SUNNY.
* MAX TEMPERATURE.......65-75 AT 5000 FEET...59-69 AT 7000 FEET.
* 24 HR TREND.........5 DEGREES WARMER.
* MIN HUMIDITY..........32-37 PERCENT.
* 24 HR TREND.........17 PERCENT DRIER.
* WIND (20 FT)
* SLOPE/VALLEY.........SOUTHWEST WINDS 5 TO 15 MPH IN THE MORNING
SHIFTING TO THE EAST 5 TO 10 MPH IN THE AFTERNOON.
* RIDGETOP.............WEST 5 TO 10 MPH.
* CHANCE OF LIGHTNING...0 PERCENT.
* CWR...................ZERO.
FORECAST DAYS 3 THROUGH 7...
TUESDAY NIGHT
MOSTLY CLEAR. LOWS 46 TO 52. WEST WINDS 5 TO
10 MPH.
WEDNESDAY
MOSTLY CLEAR. LOWS 40 TO 46. HIGHS 64 TO 70.
NORTHWEST WINDS 5 TO 10 MPH.
THURSDAY
MOSTLY CLEAR. LOWS 42 TO 50. HIGHS 60 TO 67.
SOUTHWEST WINDS 5 TO 10 MPH.
FRIDAY
PARTLY CLOUDY. LOWS 46 TO 52. HIGHS 65 TO 73. SOUTHWEST
WINDS 5 TO 10 MPH.
SATURDAY
PARTLY CLOUDY. ISOLATED SHOWERS. LOWS 41 TO 46. HIGHS
61 TO 67.
SUNDAY
SUNNY. HIGHS 60 TO 67.
MTZ127-281015-
GOLDEN VALLEY COUNTY/MUSSELSHELL COUNTY-
114 PM MDT SUN SEP 27 2026
TONIGHT
* SKY/WEATHER...........MOSTLY CLOUDY WITH ISOLATED RAIN SHOWERS.
* MIN TEMPERATURE.......43-48.
* 24 HR TREND.........3 DEGREES WARMER.
* MAX HUMIDITY..........62-67 PERCENT.
* 24 HR TREND.........17 PERCENT WETTER.
* WIND (20 FT)
* PLAINS...............EAST WINDS 5 TO 10 MPH IN THE EVENING
SHIFTING TO THE NORTHWEST OVERNIGHT.
* CHANCE OF LIGHTNING...4 PERCENT.
* CWR...................LESS THAN 10 PERCENT.
MONDAY
* SKY/WEATHER...........PARTLY SUNNY. ISOLATED RAIN SHOWERS IN THE
MORNING.
* MAX TEMPERATURE.......63-68.
* 24 HR TREND.........8 DEGREES WARMER.
* MIN HUMIDITY..........36-41 PERCENT.
* 24 HR TREND.........3 PERCENT DRIER.
* WIND (20 FT)
* PLAINS...............NORTH WINDS 5 TO 10 MPH.
* CHANCE OF LIGHTNING...1 PERCENT.
* CWR...................LESS THAN 10 PERCENT.
MONDAY NIGHT
* SKY/WEATHER...........PARTLY CLOUDY.
* MIN TEMPERATURE.......44-49.
* 24 HR TREND.........1 DEGREE WARMER.
* MAX HUMIDITY..........62-67 PERCENT.
* 24 HR TREND.........UNCHANGED.
* WIND (20 FT)
* PLAINS...............SOUTHEAST WINDS 5 TO 10 MPH IN THE EVENING
SHIFTING TO THE SOUTHWEST OVERNIGHT.
* CHANCE OF LIGHTNING...1 PERCENT.
* CWR...................ZERO.
TUESDAY
* SKY/WEATHER...........SUNNY.
* MAX TEMPERATURE.......70-75.
* 24 HR TREND.........7 DEGREES WARMER.
* MIN HUMIDITY..........25-30 PERCENT.
* 24 HR TREND.........11 PERCENT DRIER.
* WIND (20 FT)
* PLAINS...............WEST WINDS 5 TO 15 MPH.
* CHANCE OF LIGHTNING...0 PERCENT.
* CWR...................ZERO.
FORECAST DAYS 3 THROUGH 7...
TUESDAY NIGHT
PARTLY CLOUDY. LOWS 49 TO 54. WEST WINDS 5 TO
10 MPH.
WEDNESDAY
PARTLY CLOUDY. LOWS 41 TO 46. HIGHS 62 TO 67. NORTH
WINDS 5 TO 15 MPH.
THURSDAY
MOSTLY CLEAR. LOWS 43 TO 48. HIGHS 58 TO 63.
SOUTHEAST WINDS 5 TO 10 MPH.
FRIDAY
PARTLY CLOUDY. LOWS 46 TO 51. HIGHS 64 TO 69. SOUTH
WINDS 5 TO 10 MPH.
SATURDAY
MOSTLY CLEAR. LOWS 41 TO 46. HIGHS 58 TO 63.
SUNDAY
MOSTLY SUNNY. HIGHS 59 TO 64.
MTZ128-281015-
YELLOWSTONE COUNTY-
114 PM MDT SUN SEP 27 2026
TONIGHT
* SKY/WEATHER...........MOSTLY CLOUDY WITH ISOLATED RAIN SHOWERS.
* MIN TEMPERATURE.......44-49.
* 24 HR TREND.........1 DEGREE WARMER.
* MAX HUMIDITY..........68-73 PERCENT.
* 24 HR TREND.........16 PERCENT WETTER.
* WIND (20 FT)
* PLAINS...............NORTHEAST WINDS 5 TO 15 MPH IN THE EVENING
SHIFTING TO THE NORTHWEST 5 TO 10 MPH OVERNIGHT.
* CHANCE OF LIGHTNING...2 PERCENT.
* CWR...................LESS THAN 10 PERCENT.
MONDAY
* SKY/WEATHER...........MOSTLY CLOUDY WITH ISOLATED RAIN SHOWERS IN
THE MORNING, THEN MOSTLY SUNNY IN THE AFTERNOON.
* MAX TEMPERATURE.......68-73.
* 24 HR TREND.........6 DEGREES WARMER.
* MIN HUMIDITY..........36-41 PERCENT.
* 24 HR TREND.........2 PERCENT WETTER.
* WIND (20 FT)
* PLAINS...............SOUTHWEST WINDS 5 TO 15 MPH IN THE MORNING
SHIFTING TO THE NORTH 5 TO 10 MPH IN THE AFTERNOON.
* CHANCE OF LIGHTNING...3 PERCENT.
* CWR...................LESS THAN 10 PERCENT.
MONDAY NIGHT
* SKY/WEATHER...........MOSTLY CLOUDY IN THE EVENING THEN CLEARING.
* MIN TEMPERATURE.......44-49.
* 24 HR TREND.........UNCHANGED.
* MAX HUMIDITY..........77-82 PERCENT.
* 24 HR TREND.........9 PERCENT WETTER.
* WIND (20 FT)
* PLAINS...............SOUTHEAST WINDS 5 TO 10 MPH IN THE EVENING
SHIFTING TO THE SOUTHWEST 5 TO 15 MPH OVERNIGHT.
* CHANCE OF LIGHTNING...4 PERCENT.
* CWR...................ZERO.
TUESDAY
* SKY/WEATHER...........SUNNY.
* MAX TEMPERATURE.......75-80.
* 24 HR TREND.........7 DEGREES WARMER.
* MIN HUMIDITY..........25-30 PERCENT.
* 24 HR TREND.........11 PERCENT DRIER.
* WIND (20 FT)
* PLAINS...............SOUTHWEST WINDS 5 TO 15 MPH.
* CHANCE OF LIGHTNING...0 PERCENT.
* CWR...................ZERO.
FORECAST DAYS 3 THROUGH 7...
TUESDAY NIGHT
MOSTLY CLEAR. LOWS 49 TO 54. WEST WINDS 5 TO
10 MPH.
WEDNESDAY
PARTLY CLOUDY. LOWS 42 TO 47. HIGHS 69 TO 74. NORTH
WINDS 5 TO 15 MPH.
THURSDAY
MOSTLY CLEAR. LOWS 43 TO 48. HIGHS 65 TO 70. EAST
WINDS 5 TO 10 MPH.
FRIDAY
PARTLY CLOUDY. LOWS 47 TO 52. HIGHS 71 TO 76. SOUTHWEST
WINDS 5 TO 10 MPH.
SATURDAY
MOSTLY CLEAR. LOWS 43 TO 48. HIGHS 65 TO 70.
SUNDAY
MOSTLY SUNNY. HIGHS 66 TO 71.
MTZ129-281015-
CROW INDIAN RESERVATION/BIGHORN CANYON REC AREA-
114 PM MDT SUN SEP 27 2026
TONIGHT
* SKY/WEATHER...........CLOUDY. ISOLATED RAIN SHOWERS OVERNIGHT.
* MIN TEMPERATURE.......46-51.
* 24 HR TREND.........6 DEGREES WARMER.
* MAX HUMIDITY..........64-74 PERCENT AT 5000 FEET...58-68 PERCENT
AT 7000 FEET.
* 24 HR TREND.........19 PERCENT WETTER.
* WIND (20 FT)
* SLOPE/VALLEY.........EAST WINDS 5 TO 10 MPH IN THE EVENING
SHIFTING TO THE SOUTHWEST OVERNIGHT.
* RIDGETOP.............SOUTHWEST 10 TO 20 MPH.
* CHANCE OF LIGHTNING...3 PERCENT.
* CWR...................LESS THAN 10 PERCENT.
MONDAY
* SKY/WEATHER...........PARTLY SUNNY. ISOLATED RAIN SHOWERS IN THE
MORNING.
* MAX TEMPERATURE.......60-70 AT 5000 FEET...55-61 AT 7000 FEET.
* 24 HR TREND.........UNCHANGED.
* MIN HUMIDITY..........38-48 PERCENT AT 5000 FEET...47-57 PERCENT
AT 7000 FEET.
* 24 HR TREND.........7 PERCENT WETTER.
* WIND (20 FT)
* SLOPE/VALLEY.........NORTHWEST WINDS 5 TO 10 MPH.
* RIDGETOP.............SOUTHWEST 10 TO 20 MPH.
* CHANCE OF LIGHTNING...2 PERCENT.
* CWR...................LESS THAN 10 PERCENT.
MONDAY NIGHT
* SKY/WEATHER...........MOSTLY CLOUDY.
* MIN TEMPERATURE.......44-49 AT 5000 FEET...41-46 AT 7000 FEET.
* 24 HR TREND.........2 DEGREES COOLER.
* MAX HUMIDITY..........64-74 PERCENT AT 5000 FEET...60-68 PERCENT
AT 7000 FEET.
* 24 HR TREND.........7 PERCENT DRIER.
* WIND (20 FT)
* SLOPE/VALLEY.........LIGHT WINDS IN THE EVENING BECOMING SOUTH 5
TO 10 MPH OVERNIGHT.
* RIDGETOP.............WEST 10 TO 20 MPH.
* CHANCE OF LIGHTNING...3 PERCENT.
* CWR...................ZERO.
TUESDAY
* SKY/WEATHER...........SUNNY.
* MAX TEMPERATURE.......66-76 AT 5000 FEET...59-66 AT 7000 FEET.
* 24 HR TREND.........8 DEGREES WARMER.
* MIN HUMIDITY..........24-32 PERCENT AT 5000 FEET...27-34 PERCENT
AT 7000 FEET.
* 24 HR TREND.........18 PERCENT DRIER.
* WIND (20 FT)
* SLOPE/VALLEY.........WEST WINDS 5 TO 10 MPH.
* RIDGETOP.............WEST 5 TO 15 MPH.
* CHANCE OF LIGHTNING...0 PERCENT.
* CWR...................ZERO.
FORECAST DAYS 3 THROUGH 7...
TUESDAY NIGHT
MOSTLY CLEAR. LOWS 47 TO 53. SOUTHWEST WINDS
5 TO 10 MPH.
WEDNESDAY
MOSTLY CLEAR. LOWS 40 TO 46. HIGHS 61 TO 71. NORTH
WINDS 5 TO 10 MPH.
THURSDAY
MOSTLY CLEAR. LOWS 43 TO 50. HIGHS 59 TO 69.
SOUTHEAST WINDS 5 TO 10 MPH.
FRIDAY
MOSTLY CLEAR. LOWS 47 TO 53. HIGHS 64 TO 74. SOUTHEAST
WINDS 5 TO 10 MPH.
SATURDAY
MOSTLY CLEAR. LOWS 41 TO 47. HIGHS 59 TO 69.
SUNDAY
SUNNY. HIGHS 58 TO 68.
MTZ130-281015-
NORTHERN ROSEBUD/NORTHERN TREASURE COUNTIES-
114 PM MDT SUN SEP 27 2026
TONIGHT
* SKY/WEATHER...........MOSTLY CLOUDY WITH ISOLATED RAIN SHOWERS.
* MIN TEMPERATURE.......47-52.
* 24 HR TREND.........7 DEGREES WARMER.
* MAX HUMIDITY..........93-98 PERCENT.
* 24 HR TREND.........25 PERCENT WETTER.
* WIND (20 FT)
* PLAINS...............EAST WINDS 5 TO 10 MPH.
* CHANCE OF LIGHTNING...5 PERCENT.
* CWR...................LESS THAN 10 PERCENT.
MONDAY
* SKY/WEATHER...........MOSTLY SUNNY. ISOLATED RAIN SHOWERS IN THE
MORNING. PATCHY FOG IN THE MORNING.
* MAX TEMPERATURE.......68-73.
* 24 HR TREND.........4 DEGREES WARMER.
* MIN HUMIDITY..........42-47 PERCENT.
* 24 HR TREND.........12 PERCENT WETTER.
* WIND (20 FT)
* PLAINS...............NORTHWEST WINDS 5 TO 10 MPH.
* CHANCE OF LIGHTNING...1 PERCENT.
* CWR...................LESS THAN 10 PERCENT.
MONDAY NIGHT
* SKY/WEATHER...........PARTLY CLOUDY.
* MIN TEMPERATURE.......43-48.
* 24 HR TREND.........4 DEGREES COOLER.
* MAX HUMIDITY..........87-92 PERCENT.
* 24 HR TREND.........6 PERCENT DRIER.
* WIND (20 FT)
* PLAINS...............LIGHT WINDS IN THE EVENING BECOMING
SOUTHWEST 5 TO 10 MPH OVERNIGHT.
* CHANCE OF LIGHTNING...1 PERCENT.
* CWR...................ZERO.
TUESDAY
* SKY/WEATHER...........SUNNY.
* MAX TEMPERATURE.......75-80.
* 24 HR TREND.........7 DEGREES WARMER.
* MIN HUMIDITY..........24-29 PERCENT.
* 24 HR TREND.........18 PERCENT DRIER.
* WIND (20 FT)
* PLAINS...............SOUTHWEST WINDS 5 TO 15 MPH.
* CHANCE OF LIGHTNING...0 PERCENT.
* CWR...................ZERO.
FORECAST DAYS 3 THROUGH 7...
TUESDAY NIGHT
MOSTLY CLEAR. LOWS 48 TO 53. WEST WINDS 5 TO
10 MPH.
WEDNESDAY
PARTLY CLOUDY. LOWS 41 TO 46. HIGHS 67 TO 72.
NORTHWEST WINDS 5 TO 15 MPH.
THURSDAY
MOSTLY CLEAR. LOWS 42 TO 47. HIGHS 64 TO 69. EAST
WINDS 5 TO 10 MPH.
FRIDAY
PARTLY CLOUDY. LOWS 46 TO 51. HIGHS 69 TO 74. SOUTHEAST
WINDS 5 TO 10 MPH.
SATURDAY
PARTLY CLOUDY. LOWS 42 TO 47. HIGHS 64 TO 69.
SUNDAY
MOSTLY SUNNY. HIGHS 64 TO 69.
MTZ131-281015-
NORTHERN CHEYENNE INDIAN RESERVATION/ASHLAND RANGER DISTRICT
CUSTER NATL FOREST-
114 PM MDT SUN SEP 27 2026
TONIGHT
* SKY/WEATHER...........MOSTLY CLOUDY. ISOLATED RAIN SHOWERS
OVERNIGHT.
* MIN TEMPERATURE.......48-53.
* 24 HR TREND.........7 DEGREES WARMER.
* MAX HUMIDITY..........90-95 PERCENT.
* 24 HR TREND.........24 PERCENT WETTER.
* WIND (20 FT)
* SLOPE/VALLEY.........SOUTHEAST WINDS 5 TO 15 MPH.
* RIDGETOP.............SOUTHEAST 20 TO 30 MPH.
* CHANCE OF LIGHTNING...5 PERCENT.
* CWR...................LESS THAN 10 PERCENT.
MONDAY
* SKY/WEATHER...........PATCHY FOG IN THE MORNING. MOSTLY CLOUDY
WITH ISOLATED RAIN SHOWERS IN THE MORNING, THEN MOSTLY SUNNY IN
THE AFTERNOON.
* MAX TEMPERATURE.......69-74.
* 24 HR TREND.........1 DEGREE WARMER.
* MIN HUMIDITY..........36-41 PERCENT.
* 24 HR TREND.........8 PERCENT WETTER.
* WIND (20 FT)
* SLOPE/VALLEY.........NORTHWEST WINDS 5 TO 10 MPH.
* RIDGETOP.............NORTHWEST 5 TO 15 MPH.
* CHANCE OF LIGHTNING...1 PERCENT.
* CWR...................LESS THAN 10 PERCENT.
MONDAY NIGHT
* SKY/WEATHER...........MOSTLY CLOUDY.
* MIN TEMPERATURE.......42-47.
* 24 HR TREND.........6 DEGREES COOLER.
* MAX HUMIDITY..........87-92 PERCENT.
* 24 HR TREND.........3 PERCENT DRIER.
* WIND (20 FT)
* SLOPE/VALLEY.........LIGHT WINDS.
* RIDGETOP.............NORTHWEST 5 TO 10 MPH.
* CHANCE OF LIGHTNING...2 PERCENT.
* CWR...................ZERO.
TUESDAY
* SKY/WEATHER...........SUNNY.
* MAX TEMPERATURE.......75-80.
* 24 HR TREND.........6 DEGREES WARMER.
* MIN HUMIDITY..........20-25 PERCENT.
* 24 HR TREND.........16 PERCENT DRIER.
* WIND (20 FT)
* SLOPE/VALLEY.........SOUTHWEST WINDS 5 TO 10 MPH.
* RIDGETOP.............SOUTHWEST 5 TO 10 MPH.
* CHANCE OF LIGHTNING...0 PERCENT.
* CWR...................ZERO.
FORECAST DAYS 3 THROUGH 7...
TUESDAY NIGHT
MOSTLY CLEAR. LOWS 45 TO 50. LIGHT WINDS.
WEDNESDAY
MOSTLY CLEAR. LOWS 40 TO 45. HIGHS 69 TO 74. NORTH
WINDS 5 TO 15 MPH.
THURSDAY
MOSTLY CLEAR. LOWS 42 TO 47. HIGHS 66 TO 71.
SOUTHEAST WINDS 5 TO 10 MPH.
FRIDAY
PARTLY CLOUDY. LOWS 45 TO 50. HIGHS 72 TO 77. SOUTH
WINDS 5 TO 10 MPH.
SATURDAY
MOSTLY CLEAR. LOWS 40 TO 45. HIGHS 67 TO 72.
SUNDAY
SUNNY. HIGHS 67 TO 72.
MTZ132-281015-
CUSTER COUNTY-
114 PM MDT SUN SEP 27 2026
TONIGHT
* SKY/WEATHER...........MOSTLY CLOUDY. ISOLATED SHOWERS AND
THUNDERSTORMS IN THE EVENING, THEN SCATTERED RAIN SHOWERS AND
ISOLATED THUNDERSTORMS OVERNIGHT.
* MIN TEMPERATURE.......49-54.
* 24 HR TREND.........8 DEGREES WARMER.
* MAX HUMIDITY..........100 PERCENT.
* 24 HR TREND.........41 PERCENT WETTER.
* WIND (20 FT)
* PLAINS...............SOUTHEAST WINDS 5 TO 15 MPH.
* CHANCE OF LIGHTNING...23 PERCENT.
* CWR...................10 PERCENT.
MONDAY
* SKY/WEATHER...........PATCHY FOG IN THE MORNING. MOSTLY CLOUDY
WITH ISOLATED RAIN SHOWERS.
* MAX TEMPERATURE.......66-71.
* 24 HR TREND.........2 DEGREES WARMER.
* MIN HUMIDITY..........59-64 PERCENT.
* 24 HR TREND.........32 PERCENT WETTER.
* WIND (20 FT)
* PLAINS...............SOUTH WINDS 5 TO 10 MPH IN THE MORNING
SHIFTING TO THE NORTHWEST 5 TO 15 MPH IN THE AFTERNOON.
* CHANCE OF LIGHTNING...11 PERCENT.
* CWR...................LESS THAN 10 PERCENT.
MONDAY NIGHT
* SKY/WEATHER...........PARTLY CLOUDY. ISOLATED RAIN SHOWERS IN THE
EVENING. PATCHY FOG OVERNIGHT.
* MIN TEMPERATURE.......45-50.
* 24 HR TREND.........4 DEGREES COOLER.
* MAX HUMIDITY..........91-96 PERCENT.
* 24 HR TREND.........6 PERCENT DRIER.
* WIND (20 FT)
* PLAINS...............NORTH WINDS 5 TO 10 MPH IN THE EVENING
SHIFTING TO THE WEST OVERNIGHT.
* CHANCE OF LIGHTNING...4 PERCENT.
* CWR...................LESS THAN 10 PERCENT.
TUESDAY
* SKY/WEATHER...........SUNNY.
* MAX TEMPERATURE.......73-78.
* 24 HR TREND.........7 DEGREES WARMER.
* MIN HUMIDITY..........24-29 PERCENT.
* 24 HR TREND.........35 PERCENT DRIER.
* WIND (20 FT)
* PLAINS...............SOUTHWEST WINDS 5 TO 15 MPH.
* CHANCE OF LIGHTNING...0 PERCENT.
* CWR...................ZERO.
FORECAST DAYS 3 THROUGH 7...
TUESDAY NIGHT
MOSTLY CLEAR. LOWS 48 TO 53. SOUTHWEST WINDS
5 TO 10 MPH.
WEDNESDAY
PARTLY CLOUDY. LOWS 40 TO 45. HIGHS 66 TO 71.
NORTHWEST WINDS 5 TO 15 MPH.
THURSDAY
MOSTLY CLEAR. LOWS 42 TO 47. HIGHS 60 TO 65. SOUTH
WINDS 5 TO 10 MPH.
FRIDAY
PARTLY CLOUDY. LOWS 45 TO 50. HIGHS 67 TO 72. SOUTH
WINDS 5 TO 15 MPH.
SATURDAY
PARTLY CLOUDY. LOWS 41 TO 46. HIGHS 62 TO 67.
SUNDAY
MOSTLY SUNNY. HIGHS 61 TO 66.
MTZ133-281015-
SIOUX RANGER DISTRICT CUSTER NATIONAL FOREST-
114 PM MDT SUN SEP 27 2026
TONIGHT
* SKY/WEATHER...........MOSTLY CLOUDY. ISOLATED SHOWERS AND
THUNDERSTORMS IN THE EVENING, THEN NUMEROUS RAIN SHOWERS AND
ISOLATED THUNDERSTORMS OVERNIGHT. PATCHY FOG OVERNIGHT.
* MIN TEMPERATURE.......50-55.
* 24 HR TREND.........5 DEGREES WARMER.
* MAX HUMIDITY..........100 PERCENT.
* 24 HR TREND.........20 PERCENT WETTER.
* WIND (20 FT)
* PLAINS...............SOUTHEAST WINDS 10 TO 20 MPH. GUSTS UP TO 30
MPH IN THE EVENING.
* CHANCE OF LIGHTNING...23 PERCENT.
* CWR...................50 PERCENT.
MONDAY
* SKY/WEATHER...........PATCHY FOG IN THE MORNING. CLOUDY WITH
SCATTERED RAIN SHOWERS IN THE MORNING, THEN MOSTLY SUNNY WITH
ISOLATED SHOWERS AND THUNDERSTORMS IN THE AFTERNOON.
* MAX TEMPERATURE.......72-77.
* 24 HR TREND.........6 DEGREES WARMER.
* MIN HUMIDITY..........56-61 PERCENT.
* 24 HR TREND.........27 PERCENT WETTER.
* WIND (20 FT)
* PLAINS...............SOUTH WINDS 5 TO 10 MPH IN THE MORNING
SHIFTING TO THE WEST 5 TO 15 MPH IN THE AFTERNOON.
* CHANCE OF LIGHTNING...17 PERCENT.
* CWR...................LESS THAN 10 PERCENT.
MONDAY NIGHT
* SKY/WEATHER...........MOSTLY CLOUDY. ISOLATED RAIN SHOWERS IN THE
EVENING. PATCHY FOG OVERNIGHT.
* MIN TEMPERATURE.......47-52.
* 24 HR TREND.........3 DEGREES COOLER.
* MAX HUMIDITY..........100 PERCENT.
* 24 HR TREND.........1 PERCENT DRIER.
* WIND (20 FT)
* PLAINS...............NORTHWEST WINDS 5 TO 10 MPH.
* CHANCE OF LIGHTNING...9 PERCENT.
* CWR...................LESS THAN 10 PERCENT.
TUESDAY
* SKY/WEATHER...........PARTLY SUNNY IN THE MORNING THEN CLEARING.
PATCHY FOG IN THE MORNING.
* MAX TEMPERATURE.......74-79.
* 24 HR TREND.........2 DEGREES WARMER.
* MIN HUMIDITY..........29-34 PERCENT.
* 24 HR TREND.........27 PERCENT DRIER.
* WIND (20 FT)
* PLAINS...............WEST WINDS 5 TO 10 MPH.
* CHANCE OF LIGHTNING...0 PERCENT.
* CWR...................ZERO.
FORECAST DAYS 3 THROUGH 7...
TUESDAY NIGHT
MOSTLY CLEAR. LOWS 48 TO 53. SOUTHWEST WINDS
5 TO 10 MPH.
WEDNESDAY
PARTLY CLOUDY. LOWS 41 TO 46. HIGHS 71 TO 76.
NORTHWEST WINDS 10 TO 20 MPH WITH GUSTS TO AROUND 30 MPH.
THURSDAY
COOLER. MOSTLY CLEAR. LOWS 41 TO 46. HIGHS 61 TO 66.
SOUTH WINDS 5 TO 15 MPH.
FRIDAY
MOSTLY CLEAR. LOWS 46 TO 51. HIGHS 68 TO 73. SOUTHEAST
WINDS 5 TO 15 MPH.
SATURDAY
PARTLY CLOUDY. LOWS 42 TO 47. HIGHS 66 TO 71.
SUNDAY
MOSTLY SUNNY. HIGHS 61 TO 66.
WYZ274-281015-
SHERIDAN COUNTY-
114 PM MDT SUN SEP 27 2026
TONIGHT
* SKY/WEATHER...........CLOUDY. ISOLATED RAIN SHOWERS OVERNIGHT.
* MIN TEMPERATURE.......44-49.
* 24 HR TREND.........5 DEGREES WARMER.
* MAX HUMIDITY..........82-87 PERCENT.
* 24 HR TREND.........2 PERCENT WETTER.
* WIND (20 FT)
* SLOPE/VALLEY.........NORTHEAST WINDS 5 TO 10 MPH IN THE EVENING
SHIFTING TO THE SOUTHWEST OVERNIGHT.
* RIDGETOP.............SOUTHWEST 10 TO 20 MPH.
* CHANCE OF LIGHTNING...4 PERCENT.
* CWR...................LESS THAN 10 PERCENT.
MONDAY
* SKY/WEATHER...........PARTLY SUNNY. SCATTERED RAIN SHOWERS IN THE
MORNING, THEN ISOLATED RAIN SHOWERS IN THE AFTERNOON.
* MAX TEMPERATURE.......65-70.
* 24 HR TREND.........UNCHANGED.
* MIN HUMIDITY..........44-49 PERCENT.
* 24 HR TREND.........7 PERCENT WETTER.
* WIND (20 FT)
* SLOPE/VALLEY.........NORTH WINDS 5 TO 10 MPH.
* RIDGETOP.............SOUTHWEST 5 TO 10 MPH.
* CHANCE OF LIGHTNING...7 PERCENT.
* CWR...................LESS THAN 10 PERCENT.
MONDAY NIGHT
* SKY/WEATHER...........MOSTLY CLOUDY. PATCHY FOG OVERNIGHT.
* MIN TEMPERATURE.......40-45.
* 24 HR TREND.........4 DEGREES COOLER.
* MAX HUMIDITY..........100 PERCENT.
* 24 HR TREND.........14 PERCENT WETTER.
* WIND (20 FT)
* SLOPE/VALLEY.........NORTHWEST WINDS 5 TO 10 MPH IN THE EVENING
BECOMING LIGHT OVERNIGHT.
* RIDGETOP.............WEST 5 TO 15 MPH.
* CHANCE OF LIGHTNING...6 PERCENT.
* CWR...................ZERO.
TUESDAY
* SKY/WEATHER...........SUNNY. PATCHY FOG IN THE MORNING.
* MAX TEMPERATURE.......73-78.
* 24 HR TREND.........8 DEGREES WARMER.
* MIN HUMIDITY..........27-32 PERCENT.
* 24 HR TREND.........17 PERCENT DRIER.
* WIND (20 FT)
* SLOPE/VALLEY.........LIGHT WINDS IN THE MORNING BECOMING EAST 5
TO 10 MPH IN THE AFTERNOON.
* RIDGETOP.............WEST 5 TO 10 MPH.
* CHANCE OF LIGHTNING...0 PERCENT.
* CWR...................ZERO.
FORECAST DAYS 3 THROUGH 7...
TUESDAY NIGHT
CLEAR. LOWS 41 TO 46. SOUTHWEST WINDS 5 TO
10 MPH.
WEDNESDAY
MOSTLY CLEAR. LOWS 38 TO 43. HIGHS 68 TO 73.
NORTHWEST WINDS 5 TO 10 MPH.
THURSDAY
MOSTLY CLEAR. LOWS 38 TO 43. HIGHS 65 TO 70.
SOUTHEAST WINDS 5 TO 10 MPH.
FRIDAY
MOSTLY CLEAR. LOWS 43 TO 48. HIGHS 71 TO 76. LIGHT
WINDS.
SATURDAY
MOSTLY CLEAR. LOWS 38 TO 43. HIGHS 66 TO 71.
SUNDAY
SUNNY. HIGHS 66 TO 71.
WYZ284-281015-
BIGHORN NATIONAL FOREST-
114 PM MDT SUN SEP 27 2026
TONIGHT
* SKY/WEATHER...........MOSTLY CLOUDY. SCATTERED RAIN SHOWERS
OVERNIGHT.
* MIN TEMPERATURE.......39-44.
* 24 HR TREND.........8 DEGREES WARMER.
* MAX HUMIDITY..........82-87 PERCENT.
* 24 HR TREND.........12 PERCENT DRIER.
* WIND (20 FT)
* AT BURGESS JCT.......SOUTH WINDS 5 TO 15 MPH.
* CHANCE OF LIGHTNING...4 PERCENT.
* CWR...................LESS THAN 10 PERCENT.
MONDAY
* SKY/WEATHER...........PARTLY SUNNY WITH SCATTERED RAIN SHOWERS.
* MAX TEMPERATURE.......54-59.
* 24 HR TREND.........3 DEGREES COOLER.
* MIN HUMIDITY..........48-53 PERCENT.
* 24 HR TREND.........13 PERCENT WETTER.
* WIND (20 FT)
* AT BURGESS JCT.......SOUTHWEST WINDS 5 TO 15 MPH IN THE MORNING
SHIFTING TO THE EAST IN THE AFTERNOON.
* CHANCE OF LIGHTNING...8 PERCENT.
* CWR...................LESS THAN 10 PERCENT.
MONDAY NIGHT
* SKY/WEATHER...........MOSTLY CLOUDY. ISOLATED RAIN SHOWERS IN THE
EVENING. PATCHY FOG THROUGH THE NIGHT.
* MIN TEMPERATURE.......31-36.
* 24 HR TREND.........8 DEGREES COOLER.
* MAX HUMIDITY..........100 PERCENT.
* 24 HR TREND.........15 PERCENT WETTER.
* WIND (20 FT)
* AT BURGESS JCT.......SOUTH WINDS 5 TO 10 MPH.
* CHANCE OF LIGHTNING...8 PERCENT.
* CWR...................LESS THAN 10 PERCENT.
TUESDAY
* SKY/WEATHER...........SUNNY.
* MAX TEMPERATURE.......58-63.
* 24 HR TREND.........4 DEGREES WARMER.
* MIN HUMIDITY..........30-35 PERCENT.
* 24 HR TREND.........18 PERCENT DRIER.
* WIND (20 FT)
* AT BURGESS JCT.......WEST WINDS 5 TO 15 MPH.
* CHANCE OF LIGHTNING...0 PERCENT.
* CWR...................ZERO.
FORECAST DAYS 3 THROUGH 7...
TUESDAY NIGHT
CLEAR. LOWS 35 TO 40. SOUTHWEST WINDS 5 TO
10 MPH.
WEDNESDAY
MOSTLY CLEAR. LOWS 28 TO 33. HIGHS 55 TO 60. NORTH
WINDS 5 TO 15 MPH.
THURSDAY
MOSTLY CLEAR. ISOLATED SHOWERS. LOWS 32 TO 37. HIGHS
53 TO 58. SOUTH WINDS 5 TO 15 MPH.
FRIDAY
MOSTLY CLEAR. LOWS 36 TO 41. HIGHS 59 TO 64. SOUTHWEST
WINDS 5 TO 15 MPH.
SATURDAY
PARTLY CLOUDY. ISOLATED SHOWERS. LOWS 30 TO 35. HIGHS
54 TO 59.
SUNDAY
SUNNY. HIGHS 54 TO 59.
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