415
FNUS55 KBYZ 311038
FWFBYZ
FIRE WEATHER PLANNING FORECAST FOR SCEN AND SERN MONTANA
NATIONAL WEATHER SERVICE BILLINGS MT
438 AM MDT TUE MAR 31 2026
DISCUSSION
COOLER AND UNSETTLED WEATHER WILL PERSIST THROUGH THE WEEK,
BRINGING A REPRIEVE TO THE NUMEROUS WARM AND DRY DAYS OF LATE.
AREAS OF SNOW WILL IMPACT WESTERN AND SOUTHERN ZONES TODAY INTO
WEDNESDAY. THERE IS NOW HIGH CONFIDENCE FOR A DYNAMIC WEATHER
SYSTEM THURSDAY & FRIDAY. WIDESPREAD SNOW ALONG WITH BRISK NORTH
WINDS ARE LIKELY STARTING LATE THURSDAY. SNOW MAY LINGER OVER THE
EAST THROUGH FRIDAY NIGHT. A FEW THUNDERSTORMS ARE ALSO A
POSSIBILITY (20% CHANCE) THURSDAY AFTERNOON AND EVENING. LOOK FOR
A WARMING AND DRYING TREND OVER THE WEEKEND. JKL
MTZ123-312215-
GALLATIN NATIONAL FOREST-
438 AM MDT TUE MAR 31 2026
TODAY
* SKY/WEATHER...........MOSTLY CLOUDY. SNOW IN THE MORNING, THEN
SNOW LIKELY IN THE AFTERNOON.
* MAX TEMPERATURE.......38-48 AT 5000 FEET...29-39 AT 7000 FEET.
* 24 HR TREND.........10 DEGREES COOLER.
* MIN HUMIDITY..........61-71 PERCENT AT 5000 FEET...68-78 PERCENT
AT 7000 FEET.
* 24 HR TREND.........35 PERCENT WETTER.
* WIND (20 FT)
* SLOPE/VALLEY.........LIGHT WINDS IN THE MORNING BECOMING
NORTHWEST 5 TO 10 MPH IN THE AFTERNOON.
* RIDGETOP.............SOUTHWEST 15 TO 25 MPH.
* CHANCE OF LIGHTNING...8 PERCENT.
* CWR...................70 PERCENT.
TONIGHT
* SKY/WEATHER...........MOSTLY CLOUDY. SNOW LIKELY IN THE EVENING,
THEN SCATTERED SNOW SHOWERS OVERNIGHT.
* MIN TEMPERATURE.......25-35 AT 5000 FEET...22-32 AT 7000 FEET.
* 24 HR TREND.........7 DEGREES WARMER.
* MAX HUMIDITY..........84-94 PERCENT AT 5000 FEET...78-88 PERCENT
AT 7000 FEET.
* 24 HR TREND.........16 PERCENT DRIER.
* WIND (20 FT)
* SLOPE/VALLEY.........LIGHT WINDS.
* RIDGETOP.............WEST 10 TO 20 MPH.
* CHANCE OF LIGHTNING...9 PERCENT.
* CWR...................50 PERCENT.
WEDNESDAY
* SKY/WEATHER...........MOSTLY CLOUDY. SCATTERED SNOW SHOWERS IN
THE MORNING, THEN NUMEROUS SNOW SHOWERS AND RAIN SHOWERS IN THE
AFTERNOON.
* MAX TEMPERATURE.......45-55 AT 5000 FEET...36-46 AT 7000 FEET.
* 24 HR TREND.........4 DEGREES WARMER.
* MIN HUMIDITY..........50-60 PERCENT AT 5000 FEET...60-70 PERCENT
AT 7000 FEET.
* 24 HR TREND.........10 PERCENT DRIER.
* WIND (20 FT)
* SLOPE/VALLEY.........LIGHT WINDS IN THE MORNING BECOMING
SOUTHWEST 5 TO 10 MPH IN THE AFTERNOON.
* RIDGETOP.............WEST 5 TO 10 MPH.
* CHANCE OF LIGHTNING...12 PERCENT.
* CWR...................30 PERCENT.
FORECAST DAYS 3 THROUGH 7...
WEDNESDAY NIGHT
CLOUDY. SNOW SHOWERS AND SHOWERS. LOWS 29 TO
39. SOUTH WINDS 5 TO 10 MPH.
THURSDAY
CLOUDY. SNOW SHOWERS AND ISOLATED THUNDERSTORMS. LOWS
25 TO 33. HIGHS 43 TO 50. WEST WINDS 5 TO 15 MPH.
FRIDAY
MOSTLY CLOUDY. SNOW LIKELY. LOWS 21 TO 31. HIGHS 35 TO
44. WEST WINDS 5 TO 10 MPH.
SATURDAY
MOSTLY CLEAR. LOWS 27 TO 35. HIGHS 47 TO 57.
SOUTHWEST WINDS 5 TO 10 MPH.
SUNDAY
PARTLY CLOUDY. LOWS 29 TO 37. HIGHS 53 TO 63.
MONDAY
PARTLY SUNNY. HIGHS 54 TO 64.
MTZ124-312215-
WHEATLAND COUNTY/SWEET GRASS COUNTY-
438 AM MDT TUE MAR 31 2026
TODAY
* SKY/WEATHER...........MOSTLY CLOUDY. SNOW LIKELY IN THE MORNING,
THEN SNOW IN THE AFTERNOON.
* MAX TEMPERATURE.......33-38.
* 24 HR TREND.........5 DEGREES COOLER.
* MIN HUMIDITY..........56-61 PERCENT.
* 24 HR TREND.........9 PERCENT DRIER.
* WIND (20 FT)
* PLAINS...............SOUTHEAST WINDS 15 TO 25 MPH. GUSTS UP TO 30
MPH IN THE AFTERNOON.
* CHANCE OF LIGHTNING...1 PERCENT.
* CWR...................50 PERCENT.
TONIGHT
* SKY/WEATHER...........CLOUDY. SCATTERED SNOW SHOWERS IN THE
EVENING. PATCHY FOG OVERNIGHT.
* MIN TEMPERATURE.......24-29.
* 24 HR TREND.........2 DEGREES WARMER.
* MAX HUMIDITY..........84-89 PERCENT.
* 24 HR TREND.........10 PERCENT DRIER.
* WIND (20 FT)
* PLAINS...............SOUTHEAST WINDS 5 TO 15 MPH.
* CHANCE OF LIGHTNING...0 PERCENT.
* CWR...................40 PERCENT.
WEDNESDAY
* SKY/WEATHER...........PARTLY SUNNY. ISOLATED RAIN SHOWERS IN THE
AFTERNOON.
* MAX TEMPERATURE.......47-52.
* 24 HR TREND.........14 DEGREES WARMER.
* MIN HUMIDITY..........51-56 PERCENT.
* 24 HR TREND.........5 PERCENT DRIER.
* WIND (20 FT)
* PLAINS...............SOUTHWEST WINDS 5 TO 10 MPH IN THE MORNING
SHIFTING TO THE SOUTHEAST 5 TO 15 MPH IN THE AFTERNOON.
* CHANCE OF LIGHTNING...3 PERCENT.
* CWR...................ZERO.
FORECAST DAYS 3 THROUGH 7...
WEDNESDAY NIGHT
MOSTLY CLOUDY. NUMEROUS SHOWERS. LOWS 29 TO
34. SOUTHEAST WINDS 5 TO 15 MPH.
THURSDAY
CLOUDY. SHOWERS, SNOW AND ISOLATED THUNDERSTORMS.
LOWS 28 TO 33. HIGHS 46 TO 51. WEST WINDS 10 TO 20 MPH.
FRIDAY
MOSTLY CLOUDY. SNOW LIKELY. LOWS 24 TO 29. HIGHS 40 TO
45. NORTHWEST WINDS 10 TO 20 MPH.
SATURDAY
WARMER. MOSTLY CLEAR. LOWS 30 TO 35. HIGHS 51 TO 56.
WEST WINDS 10 TO 20 MPH WITH GUSTS TO AROUND 30 MPH.
SUNDAY
PARTLY CLOUDY. LOWS 30 TO 35. HIGHS 56 TO 61.
MONDAY
PARTLY SUNNY. HIGHS 52 TO 57.
MTZ125-312215-
STILLWATER COUNTY-
438 AM MDT TUE MAR 31 2026
TODAY
* SKY/WEATHER...........CLOUDY. SNOW LIKELY IN THE MORNING, THEN
SCATTERED SNOW SHOWERS IN THE AFTERNOON.
* MAX TEMPERATURE.......35-40.
* 24 HR TREND.........12 DEGREES COOLER.
* MIN HUMIDITY..........63-68 PERCENT.
* 24 HR TREND.........20 PERCENT WETTER.
* WIND (20 FT)
* PLAINS...............EAST WINDS 5 TO 10 MPH.
* CHANCE OF LIGHTNING...5 PERCENT.
* CWR...................40 PERCENT.
TONIGHT
* SKY/WEATHER...........CLOUDY. SNOW LIKELY IN THE EVENING, THEN
SCATTERED SNOW SHOWERS OVERNIGHT. PATCHY FOG OVERNIGHT.
* MIN TEMPERATURE.......26-31.
* 24 HR TREND.........2 DEGREES WARMER.
* MAX HUMIDITY..........83-88 PERCENT.
* 24 HR TREND.........15 PERCENT DRIER.
* WIND (20 FT)
* PLAINS...............NORTHEAST WINDS 5 TO 10 MPH IN THE EVENING
BECOMING LIGHT OVERNIGHT.
* CHANCE OF LIGHTNING...4 PERCENT.
* CWR...................20 PERCENT.
WEDNESDAY
* SKY/WEATHER...........MOSTLY CLOUDY. SCATTERED SNOW SHOWERS IN
THE MORNING, THEN SCATTERED RAIN SHOWERS AND SNOW SHOWERS IN THE
AFTERNOON.
* MAX TEMPERATURE.......45-50.
* 24 HR TREND.........10 DEGREES WARMER.
* MIN HUMIDITY..........55-60 PERCENT.
* 24 HR TREND.........8 PERCENT DRIER.
* WIND (20 FT)
* PLAINS...............LIGHT WINDS IN THE MORNING BECOMING
NORTHEAST 5 TO 10 MPH IN THE AFTERNOON.
* CHANCE OF LIGHTNING...6 PERCENT.
* CWR...................LESS THAN 10 PERCENT.
FORECAST DAYS 3 THROUGH 7...
WEDNESDAY NIGHT
MOSTLY CLOUDY. NUMEROUS SHOWERS. LOWS 31 TO
36. SOUTH WINDS 5 TO 10 MPH.
THURSDAY
CLOUDY. SHOWERS, SNOW AND ISOLATED THUNDERSTORMS.
LOWS 30 TO 35. HIGHS 51 TO 56. WEST WINDS 5 TO 15 MPH.
FRIDAY
COLDER. MOSTLY CLOUDY. SNOW. LOWS 26 TO 31. HIGHS 41 TO
46. NORTHWEST WINDS 5 TO 15 MPH WITH GUSTS TO AROUND 30 MPH.
SATURDAY
WARMER. MOSTLY CLEAR. LOWS 30 TO 35. HIGHS 54 TO 59.
WEST WINDS 5 TO 15 MPH.
SUNDAY
PARTLY CLOUDY. LOWS 31 TO 36. HIGHS 58 TO 63.
MONDAY
PARTLY SUNNY. HIGHS 55 TO 60.
MTZ126-312215-
BEARTOOTH RANGER DISTRICT CUSTER NATIONAL FOREST-
438 AM MDT TUE MAR 31 2026
TODAY
* SKY/WEATHER...........MOSTLY CLOUDY. SNOW IN THE MORNING, THEN
SCATTERED SNOW SHOWERS IN THE AFTERNOON.
* MAX TEMPERATURE.......38-48 AT 5000 FEET...31-41 AT 7000 FEET.
* 24 HR TREND.........10 DEGREES COOLER.
* MIN HUMIDITY..........58-68 PERCENT AT 5000 FEET...68-78 PERCENT
AT 7000 FEET.
* 24 HR TREND.........43 PERCENT WETTER.
* WIND (20 FT)
* SLOPE/VALLEY.........NORTHEAST WINDS 5 TO 15 MPH.
* RIDGETOP.............SOUTHWEST 15 TO 25 MPH.
* CHANCE OF LIGHTNING...6 PERCENT.
* CWR...................50 PERCENT.
TONIGHT
* SKY/WEATHER...........MOSTLY CLOUDY. SNOW LIKELY IN THE EVENING,
THEN SCATTERED SNOW SHOWERS OVERNIGHT.
* MIN TEMPERATURE.......28-36 AT 5000 FEET...24-34 AT 7000 FEET.
* 24 HR TREND.........10 DEGREES WARMER.
* MAX HUMIDITY..........78-88 PERCENT AT 5000 FEET...74-84 PERCENT
AT 7000 FEET.
* 24 HR TREND.........12 PERCENT DRIER.
* WIND (20 FT)
* SLOPE/VALLEY.........WEST WINDS 5 TO 15 MPH.
* RIDGETOP.............WEST 10 TO 20 MPH.
* CHANCE OF LIGHTNING...6 PERCENT.
* CWR...................LESS THAN 10 PERCENT.
WEDNESDAY
* SKY/WEATHER...........MOSTLY CLOUDY. SCATTERED SNOW SHOWERS IN
THE MORNING, THEN NUMEROUS SNOW SHOWERS IN THE AFTERNOON.
* MAX TEMPERATURE.......46-54 AT 5000 FEET...37-47 AT 7000 FEET.
* 24 HR TREND.........3 DEGREES WARMER.
* MIN HUMIDITY..........49-59 PERCENT AT 5000 FEET...60-70 PERCENT
AT 7000 FEET.
* 24 HR TREND.........6 PERCENT DRIER.
* WIND (20 FT)
* SLOPE/VALLEY.........NORTHWEST WINDS 5 TO 10 MPH IN THE MORNING
SHIFTING TO THE NORTHEAST IN THE AFTERNOON.
* RIDGETOP.............NORTHWEST 5 TO 15 MPH.
* CHANCE OF LIGHTNING...8 PERCENT.
* CWR...................30 PERCENT.
FORECAST DAYS 3 THROUGH 7...
WEDNESDAY NIGHT
MOSTLY CLOUDY. SNOW SHOWERS. LOWS 34 TO 41.
SOUTH WINDS 5 TO 15 MPH.
THURSDAY
CLOUDY. AREAS OF BLOWING SNOW. SNOW SHOWERS AND
ISOLATED THUNDERSTORMS. LOWS 28 TO 33. HIGHS 49 TO 57. WEST WINDS
15 TO 25 MPH WITH GUSTS TO AROUND 35 MPH.
FRIDAY
MOSTLY CLOUDY. PATCHY BLOWING SNOW. SNOW. LOWS 25 TO
30. HIGHS 32 TO 42. NORTHWEST WINDS 15 TO 25 MPH WITH GUSTS TO
AROUND 40 MPH.
SATURDAY
MOSTLY CLEAR. ISOLATED SNOW SHOWERS. LOWS 31 TO 36.
HIGHS 45 TO 55. WEST WINDS 10 TO 20 MPH.
SUNDAY
PARTLY CLOUDY. ISOLATED SNOW SHOWERS. LOWS 33 TO 38.
HIGHS 51 TO 60.
MONDAY
PARTLY SUNNY. ISOLATED SNOW SHOWERS. HIGHS 51 TO 59.
MTZ127-312215-
GOLDEN VALLEY COUNTY/MUSSELSHELL COUNTY-
438 AM MDT TUE MAR 31 2026
TODAY
* SKY/WEATHER...........MOSTLY CLOUDY WITH SNOW LIKELY.
* MAX TEMPERATURE.......37-42.
* 24 HR TREND.........9 DEGREES COOLER.
* MIN HUMIDITY..........50-55 PERCENT.
* 24 HR TREND.........UNCHANGED.
* WIND (20 FT)
* PLAINS...............EAST WINDS 10 TO 20 MPH. GUSTS UP TO 30 MPH
IN THE AFTERNOON.
* CHANCE OF LIGHTNING...0 PERCENT.
* CWR...................LESS THAN 10 PERCENT.
TONIGHT
* SKY/WEATHER...........CLOUDY. SNOW LIKELY IN THE EVENING, THEN
ISOLATED SNOW SHOWERS OVERNIGHT.
* MIN TEMPERATURE.......25-30.
* 24 HR TREND.........2 DEGREES WARMER.
* MAX HUMIDITY..........78-83 PERCENT.
* 24 HR TREND.........20 PERCENT DRIER.
* WIND (20 FT)
* PLAINS...............NORTHEAST WINDS 5 TO 15 MPH.
* CHANCE OF LIGHTNING...0 PERCENT.
* CWR...................30 PERCENT.
WEDNESDAY
* SKY/WEATHER...........PARTLY SUNNY.
* MAX TEMPERATURE.......45-50.
* 24 HR TREND.........8 DEGREES WARMER.
* MIN HUMIDITY..........50-55 PERCENT.
* 24 HR TREND.........UNCHANGED.
* WIND (20 FT)
* PLAINS...............NORTHWEST WINDS 5 TO 10 MPH IN THE MORNING
SHIFTING TO THE SOUTHEAST IN THE AFTERNOON.
* CHANCE OF LIGHTNING...0 PERCENT.
* CWR...................ZERO.
FORECAST DAYS 3 THROUGH 7...
WEDNESDAY NIGHT
MOSTLY CLOUDY. SCATTERED SHOWERS AND SNOW
SHOWERS. LOWS 31 TO 36. EAST WINDS 5 TO 15 MPH.
THURSDAY
CLOUDY. SHOWERS AND SNOW. LOWS 29 TO 34. HIGHS 48 TO
53. NORTHEAST WINDS 10 TO 20 MPH WITH GUSTS TO AROUND 30 MPH.
FRIDAY
COLDER. MOSTLY CLOUDY. PATCHY BLOWING SNOW. SNOW. LOWS
25 TO 30. HIGHS 35 TO 40. NORTHWEST WINDS 10 TO 20 MPH WITH GUSTS
TO AROUND 30 MPH.
SATURDAY
WARMER. MOSTLY CLEAR. LOWS 32 TO 37. HIGHS 51 TO 56.
WEST WINDS 5 TO 15 MPH.
SUNDAY
PARTLY CLOUDY. ISOLATED SHOWERS. LOWS 33 TO 38. HIGHS
55 TO 60.
MONDAY
PARTLY SUNNY. HIGHS 51 TO 56.
MTZ128-312215-
YELLOWSTONE COUNTY-
438 AM MDT TUE MAR 31 2026
TODAY
* SKY/WEATHER...........CLOUDY. SNOW LIKELY IN THE MORNING, THEN
SCATTERED SNOW SHOWERS IN THE AFTERNOON.
* MAX TEMPERATURE.......38-43.
* 24 HR TREND.........15 DEGREES COOLER.
* MIN HUMIDITY..........54-59 PERCENT.
* 24 HR TREND.........13 PERCENT WETTER.
* WIND (20 FT)
* PLAINS...............EAST WINDS 10 TO 20 MPH.
* CHANCE OF LIGHTNING...1 PERCENT.
* CWR...................30 PERCENT.
TONIGHT
* SKY/WEATHER...........CLOUDY. SNOW LIKELY IN THE EVENING, THEN
ISOLATED SNOW SHOWERS OVERNIGHT.
* MIN TEMPERATURE.......28-33.
* 24 HR TREND.........2 DEGREES WARMER.
* MAX HUMIDITY..........82-87 PERCENT.
* 24 HR TREND.........12 PERCENT DRIER.
* WIND (20 FT)
* PLAINS...............NORTH WINDS 5 TO 15 MPH.
* CHANCE OF LIGHTNING...1 PERCENT.
* CWR...................LESS THAN 10 PERCENT.
WEDNESDAY
* SKY/WEATHER...........PARTLY SUNNY. ISOLATED RAIN SHOWERS IN THE
AFTERNOON.
* MAX TEMPERATURE.......48-53.
* 24 HR TREND.........10 DEGREES WARMER.
* MIN HUMIDITY..........43-48 PERCENT.
* 24 HR TREND.........11 PERCENT DRIER.
* WIND (20 FT)
* PLAINS...............WEST WINDS 5 TO 10 MPH IN THE MORNING
SHIFTING TO THE NORTHEAST IN THE AFTERNOON.
* CHANCE OF LIGHTNING...1 PERCENT.
* CWR...................ZERO.
FORECAST DAYS 3 THROUGH 7...
WEDNESDAY NIGHT
MOSTLY CLOUDY. SCATTERED SHOWERS. LOWS 32 TO
37. EAST WINDS 5 TO 15 MPH.
THURSDAY
MOSTLY CLOUDY. SHOWERS, SNOW AND ISOLATED
THUNDERSTORMS. LOWS 30 TO 35. HIGHS 55 TO 60. NORTH WINDS 5 TO
15 MPH.
FRIDAY
COLDER. MOSTLY CLOUDY. SNOW. LOWS 25 TO 30. HIGHS 38 TO
43. NORTHWEST WINDS 5 TO 15 MPH.
SATURDAY
WARMER. MOSTLY CLEAR. LOWS 32 TO 37. HIGHS 54 TO 59.
WEST WINDS 5 TO 15 MPH.
SUNDAY
PARTLY CLOUDY. LOWS 33 TO 38. HIGHS 60 TO 65.
MONDAY
PARTLY SUNNY. HIGHS 56 TO 61.
MTZ129-312215-
CROW INDIAN RESERVATION/BIGHORN CANYON REC AREA-
438 AM MDT TUE MAR 31 2026
TODAY
* SKY/WEATHER...........MOSTLY CLOUDY. SCATTERED SNOW SHOWERS IN
THE MORNING.
* MAX TEMPERATURE.......38-48 AT 5000 FEET...34-40 AT 7000 FEET.
* 24 HR TREND.........14 DEGREES COOLER.
* MIN HUMIDITY..........55-65 PERCENT AT 5000 FEET...70-79 PERCENT
AT 7000 FEET.
* 24 HR TREND.........15 PERCENT WETTER.
* WIND (20 FT)
* SLOPE/VALLEY.........EAST WINDS 10 TO 20 MPH. GUSTS UP TO 30 MPH
IN THE AFTERNOON.
* RIDGETOP.............SOUTHWEST 15 TO 30 MPH.
* CHANCE OF LIGHTNING...0 PERCENT.
* CWR...................20 PERCENT.
TONIGHT
* SKY/WEATHER...........MOSTLY CLOUDY. NUMEROUS SNOW SHOWERS AND
ISOLATED RAIN SHOWERS IN THE EVENING, THEN ISOLATED SNOW SHOWERS
OVERNIGHT.
* MIN TEMPERATURE.......28-36 AT 5000 FEET...27-32 AT 7000 FEET.
* 24 HR TREND.........3 DEGREES WARMER.
* MAX HUMIDITY..........81-91 PERCENT AT 5000 FEET...80-87 PERCENT
AT 7000 FEET.
* 24 HR TREND.........22 PERCENT DRIER.
* WIND (20 FT)
* SLOPE/VALLEY.........SOUTHEAST WINDS 5 TO 15 MPH.
* RIDGETOP.............SOUTHWEST 15 TO 25 MPH.
* CHANCE OF LIGHTNING...2 PERCENT.
* CWR...................LESS THAN 10 PERCENT.
WEDNESDAY
* SKY/WEATHER...........MOSTLY CLOUDY. ISOLATED SNOW SHOWERS IN THE
MORNING, THEN SCATTERED RAIN SHOWERS AND SNOW SHOWERS IN THE
AFTERNOON.
* MAX TEMPERATURE.......43-53 AT 5000 FEET...38-44 AT 7000 FEET.
* 24 HR TREND.........4 DEGREES WARMER.
* MIN HUMIDITY..........49-59 PERCENT AT 5000 FEET...63-73 PERCENT
AT 7000 FEET.
* 24 HR TREND.........1 PERCENT DRIER.
* WIND (20 FT)
* SLOPE/VALLEY.........NORTHWEST WINDS 5 TO 10 MPH.
* RIDGETOP.............NORTHWEST 5 TO 15 MPH.
* CHANCE OF LIGHTNING...0 PERCENT.
* CWR...................ZERO.
FORECAST DAYS 3 THROUGH 7...
WEDNESDAY NIGHT
MOSTLY CLOUDY. SCATTERED SHOWERS AND SNOW
SHOWERS. LOWS 33 TO 40. SOUTHEAST WINDS 5 TO 15 MPH.
THURSDAY
CLOUDY. SHOWERS, SNOW AND ISOLATED THUNDERSTORMS.
LOWS 27 TO 32. HIGHS 48 TO 58. WEST WINDS 10 TO 20 MPH WITH GUSTS
TO AROUND 30 MPH.
FRIDAY
MUCH COLDER. MOSTLY CLOUDY. PATCHY BLOWING SNOW. SNOW.
LOWS 24 TO 29. HIGHS 30 TO 40. NORTHWEST WINDS 10 TO 20 MPH WITH
GUSTS TO AROUND 30 MPH.
SATURDAY
NOT AS COOL. MOSTLY CLEAR. ISOLATED SNOW SHOWERS.
LOWS 30 TO 36. HIGHS 43 TO 53. WEST WINDS 5 TO 15 MPH.
SUNDAY
PARTLY CLOUDY. ISOLATED SHOWERS. LOWS 31 TO 37. HIGHS
50 TO 60.
MONDAY
PARTLY SUNNY. HIGHS 49 TO 59.
MTZ130-312215-
NORTHERN ROSEBUD/NORTHERN TREASURE COUNTIES-
438 AM MDT TUE MAR 31 2026
TODAY
* SKY/WEATHER...........MOSTLY CLOUDY WITH ISOLATED SNOW SHOWERS.
* MAX TEMPERATURE.......40-45.
* 24 HR TREND.........11 DEGREES COOLER.
* MIN HUMIDITY..........32-37 PERCENT.
* 24 HR TREND.........18 PERCENT DRIER.
* WIND (20 FT)
* PLAINS...............EAST WINDS 5 TO 15 MPH.
* CHANCE OF LIGHTNING...0 PERCENT.
* CWR...................ZERO.
TONIGHT
* SKY/WEATHER...........CLOUDY WITH SCATTERED SNOW SHOWERS.
* MIN TEMPERATURE.......29-34.
* 24 HR TREND.........6 DEGREES WARMER.
* MAX HUMIDITY..........74-79 PERCENT.
* 24 HR TREND.........24 PERCENT DRIER.
* WIND (20 FT)
* PLAINS...............EAST WINDS 5 TO 15 MPH.
* CHANCE OF LIGHTNING...0 PERCENT.
* CWR...................LESS THAN 10 PERCENT.
WEDNESDAY
* SKY/WEATHER...........PARTLY SUNNY. ISOLATED SNOW SHOWERS IN THE
MORNING.
* MAX TEMPERATURE.......48-53.
* 24 HR TREND.........8 DEGREES WARMER.
* MIN HUMIDITY..........46-51 PERCENT.
* 24 HR TREND.........14 PERCENT WETTER.
* WIND (20 FT)
* PLAINS...............EAST WINDS 5 TO 10 MPH.
* CHANCE OF LIGHTNING...0 PERCENT.
* CWR...................ZERO.
FORECAST DAYS 3 THROUGH 7...
WEDNESDAY NIGHT
MOSTLY CLOUDY. ISOLATED SHOWERS AND SNOW
SHOWERS. LOWS 29 TO 34. EAST WINDS 5 TO 15 MPH.
THURSDAY
CLOUDY. RAIN AND SNOW. LOWS 28 TO 33. HIGHS 53 TO 58.
EAST WINDS 5 TO 15 MPH.
FRIDAY
COLDER. MOSTLY CLOUDY. SNOW. LOWS 22 TO 27. HIGHS 35 TO
40. NORTHWEST WINDS 5 TO 15 MPH.
SATURDAY
WARMER. PARTLY CLOUDY. ISOLATED SNOW SHOWERS. LOWS
29 TO 34. HIGHS 50 TO 55. WEST WINDS 5 TO 10 MPH.
SUNDAY
PARTLY CLOUDY. ISOLATED SHOWERS. LOWS 31 TO 36. HIGHS
57 TO 62.
MONDAY
PARTLY SUNNY. HIGHS 53 TO 58.
MTZ131-312215-
NORTHERN CHEYENNE INDIAN RESERVATION/ASHLAND RANGER DISTRICT
CUSTER NATL FOREST-
438 AM MDT TUE MAR 31 2026
TODAY
* SKY/WEATHER...........MOSTLY CLOUDY. ISOLATED SNOW SHOWERS IN THE
MORNING.
* MAX TEMPERATURE.......43-48.
* 24 HR TREND.........13 DEGREES COOLER.
* MIN HUMIDITY..........37-42 PERCENT.
* 24 HR TREND.........1 PERCENT DRIER.
* WIND (20 FT)
* SLOPE/VALLEY.........EAST WINDS 10 TO 20 MPH.
* RIDGETOP.............SOUTHWEST 15 TO 30 MPH.
* CHANCE OF LIGHTNING...0 PERCENT.
* CWR...................LESS THAN 10 PERCENT.
TONIGHT
* SKY/WEATHER...........MOSTLY CLOUDY WITH ISOLATED SNOW SHOWERS
AND RAIN SHOWERS.
* MIN TEMPERATURE.......29-34.
* 24 HR TREND.........5 DEGREES WARMER.
* MAX HUMIDITY..........78-83 PERCENT.
* 24 HR TREND.........16 PERCENT DRIER.
* WIND (20 FT)
* SLOPE/VALLEY.........SOUTHEAST WINDS 10 TO 20 MPH.
* RIDGETOP.............SOUTHWEST 15 TO 25 MPH.
* CHANCE OF LIGHTNING...1 PERCENT.
* CWR...................ZERO.
WEDNESDAY
* SKY/WEATHER...........MOSTLY CLOUDY. ISOLATED RAIN SHOWERS AND
SNOW SHOWERS IN THE MORNING, THEN SCATTERED RAIN SHOWERS IN THE
AFTERNOON.
* MAX TEMPERATURE.......48-53.
* 24 HR TREND.........5 DEGREES WARMER.
* MIN HUMIDITY..........47-52 PERCENT.
* 24 HR TREND.........10 PERCENT WETTER.
* WIND (20 FT)
* SLOPE/VALLEY.........SOUTHEAST WINDS 5 TO 10 MPH IN THE MORNING
SHIFTING TO THE NORTHEAST IN THE AFTERNOON.
* RIDGETOP.............NORTH 5 TO 15 MPH.
* CHANCE OF LIGHTNING...0 PERCENT.
* CWR...................ZERO.
FORECAST DAYS 3 THROUGH 7...
WEDNESDAY NIGHT
MOSTLY CLOUDY. SCATTERED SHOWERS AND ISOLATED
SNOW SHOWERS. LOWS 29 TO 34. SOUTHEAST WINDS 5 TO 15 MPH.
THURSDAY
MOSTLY CLOUDY. RAIN AND SNOW. LOWS 26 TO 31. HIGHS
58 TO 63. NORTHEAST WINDS 5 TO 15 MPH.
FRIDAY
MUCH COLDER. MOSTLY CLOUDY. SNOW. LOWS 21 TO 26. HIGHS
35 TO 40. NORTHWEST WINDS 10 TO 20 MPH WITH GUSTS TO AROUND
30 MPH.
SATURDAY
WARMER. MOSTLY CLEAR. ISOLATED SNOW SHOWERS. LOWS
27 TO 32. HIGHS 50 TO 55. WEST WINDS 5 TO 15 MPH.
SUNDAY
PARTLY CLOUDY. LOWS 30 TO 35. HIGHS 58 TO 63.
MONDAY
PARTLY SUNNY. HIGHS 55 TO 60.
MTZ132-312215-
CUSTER COUNTY-
438 AM MDT TUE MAR 31 2026
TODAY
* SKY/WEATHER...........PARTLY SUNNY IN THE MORNING THEN BECOMING
CLOUDY.
* MAX TEMPERATURE.......38-43.
* 24 HR TREND.........15 DEGREES COOLER.
* MIN HUMIDITY..........28-33 PERCENT.
* 24 HR TREND.........17 PERCENT DRIER.
* WIND (20 FT)
* PLAINS...............EAST WINDS 5 TO 15 MPH.
* CHANCE OF LIGHTNING...0 PERCENT.
* CWR...................ZERO.
TONIGHT
* SKY/WEATHER...........CLOUDY WITH SCATTERED SNOW SHOWERS.
* MIN TEMPERATURE.......28-33.
* 24 HR TREND.........8 DEGREES WARMER.
* MAX HUMIDITY..........69-74 PERCENT.
* 24 HR TREND.........29 PERCENT DRIER.
* WIND (20 FT)
* PLAINS...............SOUTHEAST WINDS 10 TO 20 MPH. GUSTS UP TO 30
MPH OVERNIGHT.
* CHANCE OF LIGHTNING...0 PERCENT.
* CWR...................10 PERCENT.
WEDNESDAY
* SKY/WEATHER...........MOSTLY CLOUDY. ISOLATED SNOW SHOWERS IN THE
MORNING, THEN ISOLATED RAIN SHOWERS AND SNOW SHOWERS IN THE
AFTERNOON.
* MAX TEMPERATURE.......42-47.
* 24 HR TREND.........4 DEGREES WARMER.
* MIN HUMIDITY..........52-57 PERCENT.
* 24 HR TREND.........24 PERCENT WETTER.
* WIND (20 FT)
* PLAINS...............SOUTHEAST WINDS 10 TO 20 MPH.
* CHANCE OF LIGHTNING...0 PERCENT.
* CWR...................LESS THAN 10 PERCENT.
FORECAST DAYS 3 THROUGH 7...
WEDNESDAY NIGHT
MOSTLY CLOUDY. ISOLATED SHOWERS AND SNOW
SHOWERS. LOWS 28 TO 33. SOUTHEAST WINDS 10 TO 20 MPH.
THURSDAY
CLOUDY. SNOW AND RAIN LIKELY. LOWS 27 TO 32. HIGHS
44 TO 49. EAST WINDS 10 TO 20 MPH.
FRIDAY
COLDER. MOSTLY CLOUDY. SNOW. LOWS 21 TO 26. HIGHS 31 TO
36. NORTH WINDS 5 TO 15 MPH.
SATURDAY
NOT AS COOL. PARTLY CLOUDY. LOWS 26 TO 31. HIGHS
43 TO 48. WEST WINDS 5 TO 15 MPH.
SUNDAY
PARTLY CLOUDY. LOWS 28 TO 33. HIGHS 52 TO 57.
MONDAY
PARTLY SUNNY. HIGHS 48 TO 53.
MTZ133-312215-
SIOUX RANGER DISTRICT CUSTER NATIONAL FOREST-
438 AM MDT TUE MAR 31 2026
TODAY
* SKY/WEATHER...........CLOUDY.
* MAX TEMPERATURE.......38-43.
* 24 HR TREND.........16 DEGREES COOLER.
* MIN HUMIDITY..........31-36 PERCENT.
* 24 HR TREND.........12 PERCENT DRIER.
* WIND (20 FT)
* PLAINS...............NORTHEAST WINDS 10 TO 20 MPH.
* CHANCE OF LIGHTNING...0 PERCENT.
* CWR...................ZERO.
TONIGHT
* SKY/WEATHER...........CLOUDY WITH SCATTERED SNOW SHOWERS.
* MIN TEMPERATURE.......24-29.
* 24 HR TREND.........UNCHANGED.
* MAX HUMIDITY..........83-88 PERCENT.
* 24 HR TREND.........11 PERCENT DRIER.
* WIND (20 FT)
* PLAINS...............SOUTHEAST WINDS 15 TO 25 MPH WITH GUSTS TO
AROUND 30 MPH.
* CHANCE OF LIGHTNING...0 PERCENT.
* CWR...................10 PERCENT.
WEDNESDAY
* SKY/WEATHER...........MOSTLY CLOUDY WITH SCATTERED SNOW SHOWERS.
* MAX TEMPERATURE.......39-44.
* 24 HR TREND.........1 DEGREE WARMER.
* MIN HUMIDITY..........65-70 PERCENT.
* 24 HR TREND.........34 PERCENT WETTER.
* WIND (20 FT)
* PLAINS...............SOUTHEAST WINDS 15 TO 25 MPH WITH GUSTS TO
AROUND 30 MPH.
* CHANCE OF LIGHTNING...0 PERCENT.
* CWR...................20 PERCENT.
FORECAST DAYS 3 THROUGH 7...
WEDNESDAY NIGHT
CLOUDY. SCATTERED SNOW SHOWERS. LOWS 26 TO 31.
SOUTHEAST WINDS 10 TO 20 MPH.
THURSDAY
CLOUDY. SNOW AND RAIN. LOWS 25 TO 30. HIGHS 41 TO 46.
SOUTHEAST WINDS 15 TO 25 MPH WITH GUSTS TO AROUND 30 MPH.
FRIDAY
MOSTLY CLOUDY. SNOW. LOWS 21 TO 26. HIGHS 36 TO 41.
NORTH WINDS 10 TO 20 MPH.
SATURDAY
PARTLY CLOUDY. LOWS 24 TO 29. HIGHS 43 TO 48.
NORTHWEST WINDS 10 TO 20 MPH.
SUNDAY
PARTLY CLOUDY. LOWS 28 TO 33. HIGHS 53 TO 58.
MONDAY
PARTLY SUNNY. HIGHS 50 TO 55.
WYZ274-312215-
SHERIDAN COUNTY-
438 AM MDT TUE MAR 31 2026
TODAY
* SKY/WEATHER...........MOSTLY CLOUDY. SNOW LIKELY IN THE MORNING.
* MAX TEMPERATURE.......45-50.
* 24 HR TREND.........10 DEGREES COOLER.
* MIN HUMIDITY..........49-54 PERCENT.
* 24 HR TREND.........15 PERCENT WETTER.
* WIND (20 FT)
* SLOPE/VALLEY.........SOUTHEAST WINDS 10 TO 20 MPH.
* RIDGETOP.............SOUTHWEST 15 TO 30 MPH.
* CHANCE OF LIGHTNING...0 PERCENT.
* CWR...................LESS THAN 10 PERCENT.
TONIGHT
* SKY/WEATHER...........MOSTLY CLOUDY. SCATTERED RAIN SHOWERS IN
THE EVENING, THEN ISOLATED RAIN SHOWERS AND SNOW SHOWERS
OVERNIGHT.
* MIN TEMPERATURE.......26-31.
* 24 HR TREND.........3 DEGREES WARMER.
* MAX HUMIDITY..........95-100 PERCENT.
* 24 HR TREND.........UNCHANGED.
* WIND (20 FT)
* SLOPE/VALLEY.........SOUTHEAST WINDS 5 TO 15 MPH IN THE EVENING
SHIFTING TO THE NORTHWEST 5 TO 10 MPH OVERNIGHT.
* RIDGETOP.............SOUTHWEST 5 TO 15 MPH.
* CHANCE OF LIGHTNING...4 PERCENT.
* CWR...................LESS THAN 10 PERCENT.
WEDNESDAY
* SKY/WEATHER...........MOSTLY CLOUDY. ISOLATED RAIN SHOWERS AND
SNOW SHOWERS IN THE MORNING, THEN SCATTERED RAIN SHOWERS IN THE
AFTERNOON.
* MAX TEMPERATURE.......48-53.
* 24 HR TREND.........3 DEGREES WARMER.
* MIN HUMIDITY..........51-56 PERCENT.
* 24 HR TREND.........2 PERCENT WETTER.
* WIND (20 FT)
* SLOPE/VALLEY.........LIGHT WINDS IN THE MORNING BECOMING NORTH 5
TO 10 MPH IN THE AFTERNOON.
* RIDGETOP.............NORTH 10 TO 20 MPH.
* CHANCE OF LIGHTNING...4 PERCENT.
* CWR...................LESS THAN 10 PERCENT.
FORECAST DAYS 3 THROUGH 7...
WEDNESDAY NIGHT
MOSTLY CLOUDY. SCATTERED SHOWERS. LOWS 27 TO
32. SOUTHEAST WINDS 5 TO 10 MPH.
THURSDAY
CLOUDY. SHOWERS, SNOW AND ISOLATED THUNDERSTORMS.
LOWS 24 TO 29. HIGHS 54 TO 59. NORTHWEST WINDS 5 TO 10 MPH.
FRIDAY
COLDER. MOSTLY CLOUDY. SNOW. LOWS 21 TO 26. HIGHS 34 TO
39. NORTHWEST WINDS 10 TO 20 MPH WITH GUSTS TO AROUND 35 MPH.
SATURDAY
WARMER. MOSTLY CLEAR. ISOLATED SNOW SHOWERS. LOWS
25 TO 30. HIGHS 50 TO 55. NORTHWEST WINDS 5 TO 15 MPH.
SUNDAY
PARTLY CLOUDY. LOWS 28 TO 33. HIGHS 57 TO 62.
MONDAY
PARTLY SUNNY. HIGHS 56 TO 61.
WYZ284-312215-
BIGHORN NATIONAL FOREST-
438 AM MDT TUE MAR 31 2026
TODAY
* SKY/WEATHER...........MOSTLY CLOUDY. SNOW IN THE MORNING, THEN
SCATTERED SNOW SHOWERS IN THE AFTERNOON.
* MAX TEMPERATURE.......33-38.
* 24 HR TREND.........17 DEGREES COOLER.
* MIN HUMIDITY..........61-66 PERCENT.
* 24 HR TREND.........41 PERCENT WETTER.
* WIND (20 FT)
* AT BURGESS JCT.......SOUTH WINDS 10 TO 20 MPH WITH GUSTS TO
AROUND 30 MPH.
* CHANCE OF LIGHTNING...2 PERCENT.
* CWR...................40 PERCENT.
TONIGHT
* SKY/WEATHER...........MOSTLY CLOUDY. NUMEROUS SNOW SHOWERS IN THE
EVENING, THEN SCATTERED SNOW SHOWERS OVERNIGHT.
* MIN TEMPERATURE.......24-29.
* 24 HR TREND.........8 DEGREES WARMER.
* MAX HUMIDITY..........88-93 PERCENT.
* 24 HR TREND.........10 PERCENT DRIER.
* WIND (20 FT)
* AT BURGESS JCT.......SOUTHWEST WINDS 5 TO 10 MPH.
* CHANCE OF LIGHTNING...4 PERCENT.
* CWR...................10 PERCENT.
WEDNESDAY
* SKY/WEATHER...........MOSTLY CLOUDY. SCATTERED SNOW SHOWERS IN
THE MORNING, THEN NUMEROUS SNOW SHOWERS IN THE AFTERNOON.
* MAX TEMPERATURE.......34-39.
* 24 HR TREND.........1 DEGREE WARMER.
* MIN HUMIDITY..........60-65 PERCENT.
* 24 HR TREND.........1 PERCENT DRIER.
* WIND (20 FT)
* AT BURGESS JCT.......NORTHWEST WINDS 5 TO 10 MPH.
* CHANCE OF LIGHTNING...6 PERCENT.
* CWR...................LESS THAN 10 PERCENT.
FORECAST DAYS 3 THROUGH 7...
WEDNESDAY NIGHT
MOSTLY CLOUDY. NUMEROUS SNOW SHOWERS. LOWS
25 TO 30. SOUTH WINDS 5 TO 15 MPH.
THURSDAY
CLOUDY. SNOW SHOWERS AND ISOLATED THUNDERSTORMS. LOWS
17 TO 22. HIGHS 39 TO 44. SOUTHWEST WINDS 10 TO 20 MPH WITH GUSTS
TO AROUND 30 MPH.
FRIDAY
COLDER. MOSTLY CLOUDY. AREAS OF BLOWING SNOW. SNOW.
LOWS 15 TO 20. HIGHS 23 TO 28. NORTHWEST WINDS 15 TO 25 MPH WITH
GUSTS TO AROUND 40 MPH.
SATURDAY
NOT AS COOL. MOSTLY CLEAR. SCATTERED SNOW SHOWERS.
LOWS 20 TO 25. HIGHS 36 TO 41. WEST WINDS 10 TO 20 MPH WITH GUSTS
TO AROUND 35 MPH.
SUNDAY
PARTLY CLOUDY. ISOLATED SNOW SHOWERS. LOWS 23 TO 28.
HIGHS 41 TO 46.
MONDAY
MOSTLY SUNNY. ISOLATED SNOW SHOWERS. HIGHS 42 TO 47.
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