993
FNUS55 KBYZ 180835
FWFBYZ
FIRE WEATHER PLANNING FORECAST FOR SCEN AND SERN MONTANA
NATIONAL WEATHER SERVICE BILLINGS MT
135 AM MST TUE NOV 18 2025
DISCUSSION
TEMPS WILL REMAIN SEASONAL THE REMAINDER OF THE WEEK. EXPECT A
CHANCE OF LIGHT SHOWERS AND HIGH ELEVATION SNOW THROUGH WEDNESDAY.
HOWEVER, THE CHANCE OF WETTING RAIN IS LESS THAN 20% FOR NEARLY
ALL LOCATIONS. THURSDAY INTO THE WEEKEND LOOK FOR DRIER
CONDITIONS, BUT INCREASING WIND IN THE FOOTHILLS OF SOUTH CENTRAL
MONTANA. LOOKING AHEAD, COOLER CONDITIONS ARE EXPECTED TOWARD THE
MIDDLE OF NEXT WEEK, AND POSSIBLY WETTER. BT
MTZ123-182315-
GALLATIN NATIONAL FOREST-
135 AM MST TUE NOV 18 2025
TODAY
* SKY/WEATHER...........PARTLY SUNNY.
* MAX TEMPERATURE.......49-56 AT 5000 FEET...37-47 AT 7000 FEET.
* 24 HR TREND.........4 DEGREES COOLER.
* MIN HUMIDITY..........49-59 PERCENT AT 5000 FEET...56-66 PERCENT
AT 7000 FEET.
* 24 HR TREND.........9 PERCENT DRIER.
* WIND (20 FT)
* SLOPE/VALLEY.........SOUTH WINDS 5 TO 10 MPH.
* RIDGETOP.............SOUTHWEST 5 TO 15 MPH.
* CHANCE OF LIGHTNING...0 PERCENT.
* CWR...................ZERO.
TONIGHT
* SKY/WEATHER...........MOSTLY CLOUDY.
* MIN TEMPERATURE.......29-39 AT 5000 FEET...26-36 AT 7000 FEET.
* 24 HR TREND.........2 DEGREES COOLER.
* MAX HUMIDITY..........81-91 PERCENT AT 5000 FEET...78-88 PERCENT
AT 7000 FEET.
* 24 HR TREND.........2 PERCENT DRIER.
* WIND (20 FT)
* SLOPE/VALLEY.........SOUTHEAST WINDS 5 TO 10 MPH.
* RIDGETOP.............SOUTHWEST 5 TO 15 MPH.
* CHANCE OF LIGHTNING...0 PERCENT.
* CWR...................ZERO.
WEDNESDAY
* SKY/WEATHER...........PARTLY SUNNY WITH SCATTERED SNOW SHOWERS.
* MAX TEMPERATURE.......43-53 AT 5000 FEET...33-43 AT 7000 FEET.
* 24 HR TREND.........6 DEGREES COOLER.
* MIN HUMIDITY..........59-69 PERCENT AT 5000 FEET...64-74 PERCENT
AT 7000 FEET.
* 24 HR TREND.........14 PERCENT WETTER.
* WIND (20 FT)
* SLOPE/VALLEY.........LIGHT WINDS IN THE MORNING BECOMING
NORTHWEST 5 TO 10 MPH IN THE AFTERNOON.
* RIDGETOP.............SOUTHWEST 5 TO 15 MPH.
* CHANCE OF LIGHTNING...1 PERCENT.
* CWR...................LESS THAN 10 PERCENT.
FORECAST DAYS 3 THROUGH 7...
WEDNESDAY NIGHT
PARTLY CLOUDY. LOWS 24 TO 34. SOUTH WINDS 5 TO
10 MPH.
THURSDAY
MOSTLY CLEAR. LOWS 25 TO 35. HIGHS 46 TO 56. SOUTH
WINDS 5 TO 10 MPH.
FRIDAY
MOSTLY CLEAR. LOWS 26 TO 36. HIGHS 47 TO 56. SOUTHWEST
WINDS 5 TO 10 MPH.
SATURDAY
PARTLY CLOUDY. LOWS 30 TO 40. HIGHS 46 TO 53. SOUTH
WINDS 5 TO 15 MPH.
SUNDAY
MOSTLY CLOUDY. ISOLATED SNOW SHOWERS. LOWS 27 TO 37.
HIGHS 46 TO 53.
MONDAY
PARTLY SUNNY. SCATTERED SNOW SHOWERS. HIGHS 42 TO 50.
MTZ124-182315-
WHEATLAND COUNTY/SWEET GRASS COUNTY-
135 AM MST TUE NOV 18 2025
TODAY
* SKY/WEATHER...........MOSTLY SUNNY.
* MAX TEMPERATURE.......55-60.
* 24 HR TREND.........4 DEGREES COOLER.
* MIN HUMIDITY..........43-48 PERCENT.
* 24 HR TREND.........1 PERCENT DRIER.
* WIND (20 FT)
* PLAINS...............WEST WINDS 5 TO 15 MPH.
* CHANCE OF LIGHTNING...0 PERCENT.
* CWR...................ZERO.
TONIGHT
* SKY/WEATHER...........PARTLY CLOUDY.
* MIN TEMPERATURE.......29-34.
* 24 HR TREND.........4 DEGREES COOLER.
* MAX HUMIDITY..........75-80 PERCENT.
* 24 HR TREND.........8 PERCENT DRIER.
* WIND (20 FT)
* PLAINS...............WEST WINDS 5 TO 15 MPH.
* CHANCE OF LIGHTNING...0 PERCENT.
* CWR...................ZERO.
WEDNESDAY
* SKY/WEATHER...........MOSTLY SUNNY.
* MAX TEMPERATURE.......46-51.
* 24 HR TREND.........9 DEGREES COOLER.
* MIN HUMIDITY..........44-49 PERCENT.
* 24 HR TREND.........1 PERCENT WETTER.
* WIND (20 FT)
* PLAINS...............NORTH WINDS 5 TO 15 MPH.
* CHANCE OF LIGHTNING...0 PERCENT.
* CWR...................ZERO.
FORECAST DAYS 3 THROUGH 7...
WEDNESDAY NIGHT
MOSTLY CLEAR. LOWS 23 TO 28. NORTHEAST WINDS
5 TO 10 MPH.
THURSDAY
MOSTLY CLEAR. LOWS 27 TO 32. HIGHS 50 TO 55. WEST
WINDS 5 TO 15 MPH.
FRIDAY
MOSTLY CLEAR. LOWS 31 TO 36. HIGHS 53 TO 58. WEST WINDS
15 TO 25 MPH WITH GUSTS TO AROUND 30 MPH.
SATURDAY
PARTLY CLOUDY. LOWS 33 TO 38. HIGHS 51 TO 56. WEST
WINDS 15 TO 25 MPH WITH GUSTS TO AROUND 30 MPH.
SUNDAY
MOSTLY CLOUDY. ISOLATED SHOWERS AND SNOW SHOWERS. LOWS
28 TO 33. HIGHS 51 TO 56.
MONDAY
MOSTLY CLOUDY. SCATTERED SHOWERS AND SNOW SHOWERS.
HIGHS 46 TO 51.
MTZ125-182315-
STILLWATER COUNTY-
135 AM MST TUE NOV 18 2025
TODAY
* SKY/WEATHER...........PARTLY SUNNY.
* MAX TEMPERATURE.......55-60.
* 24 HR TREND.........4 DEGREES COOLER.
* MIN HUMIDITY..........44-49 PERCENT.
* 24 HR TREND.........2 PERCENT DRIER.
* WIND (20 FT)
* PLAINS...............WEST WINDS 5 TO 10 MPH IN THE MORNING
BECOMING LIGHT IN THE AFTERNOON.
* CHANCE OF LIGHTNING...0 PERCENT.
* CWR...................ZERO.
TONIGHT
* SKY/WEATHER...........MOSTLY CLOUDY.
* MIN TEMPERATURE.......34-39.
* 24 HR TREND.........3 DEGREES COOLER.
* MAX HUMIDITY..........65-70 PERCENT.
* 24 HR TREND.........4 PERCENT DRIER.
* WIND (20 FT)
* PLAINS...............SOUTHWEST WINDS 5 TO 10 MPH.
* CHANCE OF LIGHTNING...1 PERCENT.
* CWR...................ZERO.
WEDNESDAY
* SKY/WEATHER...........MOSTLY CLOUDY. ISOLATED RAIN SHOWERS IN THE
AFTERNOON.
* MAX TEMPERATURE.......48-53.
* 24 HR TREND.........7 DEGREES COOLER.
* MIN HUMIDITY..........54-59 PERCENT.
* 24 HR TREND.........10 PERCENT WETTER.
* 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...................LESS THAN 10 PERCENT.
FORECAST DAYS 3 THROUGH 7...
WEDNESDAY NIGHT
PARTLY CLOUDY. LOWS 29 TO 34. SOUTH WINDS 5 TO
10 MPH.
THURSDAY
MOSTLY CLEAR. LOWS 30 TO 35. HIGHS 50 TO 55.
SOUTHWEST WINDS 5 TO 10 MPH.
FRIDAY
MOSTLY CLEAR. LOWS 31 TO 36. HIGHS 55 TO 60. SOUTHWEST
WINDS 5 TO 10 MPH.
SATURDAY
PARTLY CLOUDY. LOWS 33 TO 38. HIGHS 53 TO 58.
SOUTHWEST WINDS 5 TO 10 MPH.
SUNDAY
MOSTLY CLOUDY. SCATTERED SHOWERS. LOWS 31 TO 36. HIGHS
54 TO 59.
MONDAY
PARTLY SUNNY. SCATTERED SHOWERS AND SNOW SHOWERS. HIGHS
49 TO 54.
MTZ126-182315-
BEARTOOTH RANGER DISTRICT CUSTER NATIONAL FOREST-
135 AM MST TUE NOV 18 2025
TODAY
* SKY/WEATHER...........MOSTLY CLOUDY.
* MAX TEMPERATURE.......47-56 AT 5000 FEET...41-51 AT 7000 FEET.
* 24 HR TREND.........2 DEGREES COOLER.
* MIN HUMIDITY..........53-63 PERCENT AT 5000 FEET...55-65 PERCENT
AT 7000 FEET.
* 24 HR TREND.........4 PERCENT DRIER.
* WIND (20 FT)
* SLOPE/VALLEY.........WEST WINDS 5 TO 10 MPH IN THE MORNING
SHIFTING TO THE SOUTHEAST IN THE AFTERNOON.
* RIDGETOP.............SOUTHWEST 5 TO 10 MPH.
* CHANCE OF LIGHTNING...0 PERCENT.
* CWR...................ZERO.
TONIGHT
* SKY/WEATHER...........MOSTLY CLOUDY.
* MIN TEMPERATURE.......35-40 AT 5000 FEET...27-37 AT 7000 FEET.
* 24 HR TREND.........2 DEGREES COOLER.
* MAX HUMIDITY..........63-73 PERCENT AT 5000 FEET...68-78 PERCENT
AT 7000 FEET.
* 24 HR TREND.........7 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.
WEDNESDAY
* SKY/WEATHER...........PARTLY SUNNY. SCATTERED SNOW SHOWERS IN THE
AFTERNOON.
* MAX TEMPERATURE.......44-49 AT 5000 FEET...36-46 AT 7000 FEET.
* 24 HR TREND.........6 DEGREES COOLER.
* MIN HUMIDITY..........56-66 PERCENT AT 5000 FEET...59-69 PERCENT
AT 7000 FEET.
* 24 HR TREND.........8 PERCENT WETTER.
* WIND (20 FT)
* SLOPE/VALLEY.........NORTHWEST WINDS 5 TO 10 MPH IN THE MORNING
SHIFTING TO THE NORTHEAST IN THE AFTERNOON.
* RIDGETOP.............WEST 5 TO 10 MPH.
* CHANCE OF LIGHTNING...2 PERCENT.
* CWR...................ZERO.
FORECAST DAYS 3 THROUGH 7...
WEDNESDAY NIGHT
PARTLY CLOUDY. LOWS 29 TO 35. WEST WINDS 5 TO
10 MPH.
THURSDAY
MOSTLY CLEAR. LOWS 31 TO 37. HIGHS 43 TO 51.
SOUTHWEST WINDS 5 TO 10 MPH.
FRIDAY
MOSTLY CLEAR. LOWS 31 TO 36. HIGHS 45 TO 55. SOUTHWEST
WINDS 5 TO 15 MPH.
SATURDAY
PARTLY CLOUDY. LOWS 33 TO 38. HIGHS 43 TO 53. WEST
WINDS 10 TO 20 MPH.
SUNDAY
PARTLY CLOUDY. SCATTERED SNOW SHOWERS. LOWS 31 TO 36.
HIGHS 44 TO 54.
MONDAY
PARTLY SUNNY. SCATTERED SNOW SHOWERS. HIGHS 41 TO 50.
MTZ127-182315-
GOLDEN VALLEY COUNTY/MUSSELSHELL COUNTY-
135 AM MST TUE NOV 18 2025
TODAY
* SKY/WEATHER...........PARTLY SUNNY.
* MAX TEMPERATURE.......53-58.
* 24 HR TREND.........3 DEGREES COOLER.
* MIN HUMIDITY..........54-59 PERCENT.
* 24 HR TREND.........4 PERCENT DRIER.
* WIND (20 FT)
* PLAINS...............SOUTHWEST WINDS 5 TO 10 MPH.
* CHANCE OF LIGHTNING...0 PERCENT.
* CWR...................ZERO.
TONIGHT
* SKY/WEATHER...........MOSTLY CLOUDY.
* MIN TEMPERATURE.......35-40.
* 24 HR TREND.........4 DEGREES COOLER.
* MAX HUMIDITY..........69-74 PERCENT.
* 24 HR TREND.........5 PERCENT DRIER.
* WIND (20 FT)
* PLAINS...............SOUTH WINDS 5 TO 10 MPH IN THE EVENING
SHIFTING TO THE WEST OVERNIGHT.
* CHANCE OF LIGHTNING...0 PERCENT.
* CWR...................ZERO.
WEDNESDAY
* SKY/WEATHER...........PARTLY SUNNY.
* MAX TEMPERATURE.......44-49.
* 24 HR TREND.........9 DEGREES COOLER.
* MIN HUMIDITY..........58-63 PERCENT.
* 24 HR TREND.........4 PERCENT WETTER.
* WIND (20 FT)
* PLAINS...............NORTH WINDS 5 TO 10 MPH.
* CHANCE OF LIGHTNING...0 PERCENT.
* CWR...................ZERO.
FORECAST DAYS 3 THROUGH 7...
WEDNESDAY NIGHT
MOSTLY CLEAR. LOWS 28 TO 33. EAST WINDS 5 TO
10 MPH.
THURSDAY
MOSTLY CLEAR. LOWS 32 TO 37. HIGHS 45 TO 50.
SOUTHWEST WINDS 5 TO 10 MPH.
FRIDAY
MOSTLY CLEAR. LOWS 34 TO 39. HIGHS 51 TO 56. WEST WINDS
5 TO 15 MPH.
SATURDAY
PARTLY CLOUDY. LOWS 38 TO 43. HIGHS 49 TO 54.
SOUTHWEST WINDS 5 TO 15 MPH.
SUNDAY
MOSTLY CLOUDY. ISOLATED SHOWERS AND SNOW SHOWERS. LOWS
32 TO 37. HIGHS 50 TO 55.
MONDAY
MOSTLY CLOUDY. SCATTERED SHOWERS AND SNOW SHOWERS.
HIGHS 43 TO 48.
MTZ128-182315-
YELLOWSTONE COUNTY-
135 AM MST TUE NOV 18 2025
TODAY
* SKY/WEATHER...........MOSTLY CLOUDY IN THE MORNING THEN BECOMING
MOSTLY SUNNY.
* MAX TEMPERATURE.......55-60.
* 24 HR TREND.........3 DEGREES COOLER.
* MIN HUMIDITY..........50-55 PERCENT.
* 24 HR TREND.........UNCHANGED.
* WIND (20 FT)
* PLAINS...............SOUTHWEST WINDS 5 TO 10 MPH.
* CHANCE OF LIGHTNING...0 PERCENT.
* CWR...................ZERO.
TONIGHT
* SKY/WEATHER...........MOSTLY CLOUDY.
* MIN TEMPERATURE.......36-41.
* 24 HR TREND.........3 DEGREES COOLER.
* MAX HUMIDITY..........79-84 PERCENT.
* 24 HR TREND.........3 PERCENT DRIER.
* WIND (20 FT)
* PLAINS...............SOUTHWEST WINDS 5 TO 10 MPH.
* CHANCE OF LIGHTNING...0 PERCENT.
* CWR...................ZERO.
WEDNESDAY
* SKY/WEATHER...........MOSTLY CLOUDY.
* MAX TEMPERATURE.......48-53.
* 24 HR TREND.........7 DEGREES COOLER.
* MIN HUMIDITY..........54-59 PERCENT.
* 24 HR TREND.........4 PERCENT WETTER.
* WIND (20 FT)
* PLAINS...............NORTH WINDS 5 TO 10 MPH.
* CHANCE OF LIGHTNING...0 PERCENT.
* CWR...................ZERO.
FORECAST DAYS 3 THROUGH 7...
WEDNESDAY NIGHT
COLDER. PARTLY CLOUDY. LOWS 26 TO 31. EAST
WINDS 5 TO 10 MPH.
THURSDAY
MOSTLY CLEAR. LOWS 30 TO 35. HIGHS 49 TO 54.
SOUTHWEST WINDS 5 TO 10 MPH.
FRIDAY
MOSTLY CLEAR. LOWS 32 TO 37. HIGHS 55 TO 60. SOUTHWEST
WINDS 5 TO 15 MPH.
SATURDAY
PARTLY CLOUDY. LOWS 35 TO 40. HIGHS 53 TO 58.
SOUTHWEST WINDS 5 TO 15 MPH.
SUNDAY
MOSTLY CLOUDY. ISOLATED SHOWERS. LOWS 31 TO 36. HIGHS
53 TO 58.
MONDAY
PARTLY SUNNY. ISOLATED SHOWERS AND SNOW SHOWERS. HIGHS
47 TO 52.
MTZ129-182315-
CROW INDIAN RESERVATION/BIGHORN CANYON REC AREA-
135 AM MST TUE NOV 18 2025
TODAY
* SKY/WEATHER...........MOSTLY CLOUDY. ISOLATED RAIN SHOWERS IN THE
AFTERNOON.
* MAX TEMPERATURE.......48-58 AT 5000 FEET...41-49 AT 7000 FEET.
* 24 HR TREND.........1 DEGREE WARMER.
* MIN HUMIDITY..........52-62 PERCENT AT 5000 FEET...58-68 PERCENT
AT 7000 FEET.
* 24 HR TREND.........4 PERCENT DRIER.
* WIND (20 FT)
* SLOPE/VALLEY.........WEST WINDS 5 TO 10 MPH IN THE MORNING
SHIFTING TO THE NORTH IN THE AFTERNOON.
* RIDGETOP.............SOUTHWEST 5 TO 15 MPH.
* CHANCE OF LIGHTNING...0 PERCENT.
* CWR...................ZERO.
TONIGHT
* SKY/WEATHER...........MOSTLY CLOUDY.
* MIN TEMPERATURE.......36-41 AT 5000 FEET...32-37 AT 7000 FEET.
* 24 HR TREND.........3 DEGREES COOLER.
* MAX HUMIDITY..........72-77 PERCENT.
* 24 HR TREND.........UNCHANGED.
* WIND (20 FT)
* SLOPE/VALLEY.........SOUTHEAST WINDS 5 TO 10 MPH IN THE EVENING
SHIFTING TO THE WEST OVERNIGHT.
* RIDGETOP.............WEST 5 TO 15 MPH.
* CHANCE OF LIGHTNING...0 PERCENT.
* CWR...................ZERO.
WEDNESDAY
* SKY/WEATHER...........PARTLY SUNNY.
* MAX TEMPERATURE.......41-51 AT 5000 FEET...36-42 AT 7000 FEET.
* 24 HR TREND.........8 DEGREES COOLER.
* MIN HUMIDITY..........53-63 PERCENT AT 5000 FEET...65-75 PERCENT
AT 7000 FEET.
* 24 HR TREND.........UNCHANGED.
* WIND (20 FT)
* SLOPE/VALLEY.........NORTHWEST WINDS 5 TO 15 MPH.
* RIDGETOP.............WEST 10 TO 20 MPH.
* CHANCE OF LIGHTNING...0 PERCENT.
* CWR...................ZERO.
FORECAST DAYS 3 THROUGH 7...
WEDNESDAY NIGHT
PARTLY CLOUDY. LOWS 28 TO 35. EAST WINDS 5 TO
10 MPH.
THURSDAY
MOSTLY CLEAR. LOWS 31 TO 37. HIGHS 44 TO 54.
SOUTHEAST WINDS 5 TO 10 MPH.
FRIDAY
MOSTLY CLEAR. LOWS 32 TO 38. HIGHS 46 TO 56. SOUTHWEST
WINDS 5 TO 10 MPH.
SATURDAY
PARTLY CLOUDY. LOWS 33 TO 41. HIGHS 44 TO 54.
SOUTHWEST WINDS 5 TO 10 MPH.
SUNDAY
MOSTLY CLOUDY. ISOLATED SHOWERS. LOWS 31 TO 36. HIGHS
45 TO 55.
MONDAY
PARTLY SUNNY. ISOLATED SHOWERS AND SNOW SHOWERS. HIGHS
41 TO 51.
MTZ130-182315-
NORTHERN ROSEBUD/NORTHERN TREASURE COUNTIES-
135 AM MST TUE NOV 18 2025
TODAY
* SKY/WEATHER...........PARTLY SUNNY. PATCHY FOG IN THE MORNING.
* MAX TEMPERATURE.......52-57.
* 24 HR TREND.........5 DEGREES WARMER.
* MIN HUMIDITY..........55-60 PERCENT.
* 24 HR TREND.........7 PERCENT DRIER.
* WIND (20 FT)
* PLAINS...............LIGHT WINDS IN THE MORNING BECOMING
NORTHWEST 5 TO 10 MPH IN THE AFTERNOON.
* CHANCE OF LIGHTNING...0 PERCENT.
* CWR...................ZERO.
TONIGHT
* SKY/WEATHER...........MOSTLY CLOUDY.
* MIN TEMPERATURE.......34-39.
* 24 HR TREND.........2 DEGREES WARMER.
* MAX HUMIDITY..........85-90 PERCENT.
* 24 HR TREND.........6 PERCENT DRIER.
* WIND (20 FT)
* PLAINS...............LIGHT WINDS IN THE EVENING BECOMING
NORTHWEST 5 TO 10 MPH OVERNIGHT.
* CHANCE OF LIGHTNING...0 PERCENT.
* CWR...................ZERO.
WEDNESDAY
* SKY/WEATHER...........PARTLY SUNNY. PATCHY FOG IN THE MORNING.
* MAX TEMPERATURE.......44-49.
* 24 HR TREND.........8 DEGREES COOLER.
* MIN HUMIDITY..........52-57 PERCENT.
* 24 HR TREND.........3 PERCENT DRIER.
* WIND (20 FT)
* PLAINS...............NORTHWEST WINDS 5 TO 15 MPH.
* CHANCE OF LIGHTNING...0 PERCENT.
* CWR...................ZERO.
FORECAST DAYS 3 THROUGH 7...
WEDNESDAY NIGHT
COLDER. PARTLY CLOUDY. LOWS 24 TO 29.
NORTHWEST WINDS 5 TO 10 MPH.
THURSDAY
MOSTLY CLEAR. LOWS 27 TO 32. HIGHS 45 TO 50. SOUTH
WINDS 5 TO 10 MPH.
FRIDAY
PARTLY CLOUDY. LOWS 31 TO 36. HIGHS 52 TO 57. WEST
WINDS 5 TO 10 MPH.
SATURDAY
PARTLY CLOUDY. LOWS 32 TO 37. HIGHS 51 TO 56.
SOUTHWEST WINDS 5 TO 15 MPH.
SUNDAY
MOSTLY CLOUDY. ISOLATED SHOWERS. LOWS 29 TO 34. HIGHS
51 TO 56.
MONDAY
PARTLY SUNNY. ISOLATED SHOWERS AND SNOW SHOWERS. HIGHS
45 TO 50.
MTZ131-182315-
NORTHERN CHEYENNE INDIAN RESERVATION/ASHLAND RANGER DISTRICT
CUSTER NATL FOREST-
135 AM MST TUE NOV 18 2025
TODAY
* SKY/WEATHER...........PATCHY FOG IN THE MORNING. MOSTLY SUNNY IN
THE MORNING, THEN MOSTLY CLOUDY WITH ISOLATED RAIN SHOWERS IN THE
AFTERNOON.
* MAX TEMPERATURE.......53-58.
* 24 HR TREND.........3 DEGREES WARMER.
* MIN HUMIDITY..........54-59 PERCENT.
* 24 HR TREND.........5 PERCENT DRIER.
* WIND (20 FT)
* SLOPE/VALLEY.........NORTHWEST WINDS 5 TO 10 MPH.
* RIDGETOP.............WEST 5 TO 10 MPH.
* CHANCE OF LIGHTNING...0 PERCENT.
* CWR...................ZERO.
TONIGHT
* SKY/WEATHER...........MOSTLY CLOUDY. ISOLATED RAIN SHOWERS IN THE
EVENING. PATCHY FOG OVERNIGHT.
* MIN TEMPERATURE.......34-39.
* 24 HR TREND.........2 DEGREES WARMER.
* MAX HUMIDITY..........87-92 PERCENT.
* 24 HR TREND.........1 PERCENT DRIER.
* WIND (20 FT)
* SLOPE/VALLEY.........SOUTH WINDS 5 TO 10 MPH IN THE EVENING
SHIFTING TO THE WEST OVERNIGHT.
* RIDGETOP.............WEST 5 TO 15 MPH.
* CHANCE OF LIGHTNING...0 PERCENT.
* CWR...................20 PERCENT.
WEDNESDAY
* SKY/WEATHER...........PARTLY SUNNY. PATCHY FOG IN THE MORNING.
* MAX TEMPERATURE.......47-52.
* 24 HR TREND.........6 DEGREES COOLER.
* MIN HUMIDITY..........51-56 PERCENT.
* 24 HR TREND.........3 PERCENT DRIER.
* WIND (20 FT)
* SLOPE/VALLEY.........NORTHWEST WINDS 5 TO 15 MPH.
* RIDGETOP.............NORTHWEST 15 TO 25 MPH.
* CHANCE OF LIGHTNING...0 PERCENT.
* CWR...................ZERO.
FORECAST DAYS 3 THROUGH 7...
WEDNESDAY NIGHT
COLDER. PARTLY CLOUDY. LOWS 25 TO 30. WEST
WINDS 5 TO 10 MPH.
THURSDAY
MOSTLY CLEAR. LOWS 27 TO 32. HIGHS 49 TO 54. SOUTH
WINDS 5 TO 10 MPH.
FRIDAY
MOSTLY CLEAR. LOWS 29 TO 34. HIGHS 53 TO 58. SOUTHWEST
WINDS 5 TO 10 MPH.
SATURDAY
PARTLY CLOUDY. LOWS 28 TO 33. HIGHS 51 TO 56.
SOUTHWEST WINDS 5 TO 10 MPH.
SUNDAY
PARTLY CLOUDY. LOWS 28 TO 33. HIGHS 53 TO 58.
MONDAY
PARTLY SUNNY. HIGHS 46 TO 51.
MTZ132-182315-
CUSTER COUNTY-
135 AM MST TUE NOV 18 2025
TODAY
* SKY/WEATHER...........MOSTLY SUNNY IN THE MORNING THEN BECOMING
MOSTLY CLOUDY. PATCHY FOG IN THE MORNING.
* MAX TEMPERATURE.......50-55.
* 24 HR TREND.........4 DEGREES WARMER.
* MIN HUMIDITY..........62-67 PERCENT.
* 24 HR TREND.........1 PERCENT WETTER.
* WIND (20 FT)
* PLAINS...............SOUTHWEST WINDS 5 TO 10 MPH.
* CHANCE OF LIGHTNING...0 PERCENT.
* CWR...................ZERO.
TONIGHT
* SKY/WEATHER...........CLOUDY WITH ISOLATED RAIN SHOWERS. PATCHY
FOG OVERNIGHT.
* MIN TEMPERATURE.......37-42.
* 24 HR TREND.........6 DEGREES WARMER.
* MAX HUMIDITY..........93-98 PERCENT.
* 24 HR TREND.........1 PERCENT WETTER.
* WIND (20 FT)
* PLAINS...............LIGHT WINDS IN THE EVENING BECOMING SOUTH 5
TO 10 MPH OVERNIGHT.
* CHANCE OF LIGHTNING...0 PERCENT.
* CWR...................10 PERCENT.
WEDNESDAY
* SKY/WEATHER...........MOSTLY CLOUDY IN THE MORNING THEN BECOMING
MOSTLY SUNNY. AREAS OF FOG IN THE MORNING.
* MAX TEMPERATURE.......44-49.
* 24 HR TREND.........6 DEGREES COOLER.
* MIN HUMIDITY..........63-68 PERCENT.
* 24 HR TREND.........1 PERCENT WETTER.
* WIND (20 FT)
* PLAINS...............NORTHWEST WINDS 5 TO 15 MPH.
* CHANCE OF LIGHTNING...0 PERCENT.
* CWR...................ZERO.
FORECAST DAYS 3 THROUGH 7...
WEDNESDAY NIGHT
COLDER. PARTLY CLOUDY. LOWS 24 TO 29.
NORTHWEST WINDS 5 TO 10 MPH.
THURSDAY
MOSTLY CLEAR. LOWS 29 TO 34. HIGHS 43 TO 48. SOUTH
WINDS 5 TO 10 MPH.
FRIDAY
MOSTLY CLEAR. LOWS 30 TO 35. HIGHS 49 TO 54. SOUTHWEST
WINDS 5 TO 15 MPH.
SATURDAY
PARTLY CLOUDY. LOWS 31 TO 36. HIGHS 47 TO 52.
SOUTHWEST WINDS 5 TO 15 MPH.
SUNDAY
PARTLY CLOUDY. LOWS 28 TO 33. HIGHS 48 TO 53.
MONDAY
PARTLY SUNNY. HIGHS 41 TO 46.
MTZ133-182315-
SIOUX RANGER DISTRICT CUSTER NATIONAL FOREST-
135 AM MST TUE NOV 18 2025
TODAY
* SKY/WEATHER...........PARTLY SUNNY. AREAS OF FOG IN THE MORNING.
* MAX TEMPERATURE.......50-55.
* 24 HR TREND.........7 DEGREES WARMER.
* MIN HUMIDITY..........64-69 PERCENT.
* 24 HR TREND.........13 PERCENT DRIER.
* WIND (20 FT)
* PLAINS...............SOUTHWEST WINDS 5 TO 10 MPH.
* CHANCE OF LIGHTNING...0 PERCENT.
* CWR...................ZERO.
TONIGHT
* SKY/WEATHER...........MOSTLY CLOUDY. SCATTERED RAIN SHOWERS IN
THE EVENING, THEN ISOLATED RAIN SHOWERS OVERNIGHT. PATCHY FOG IN
THE EVENING, THEN AREAS OF FOG OVERNIGHT.
* MIN TEMPERATURE.......34-39.
* 24 HR TREND.........5 DEGREES WARMER.
* MAX HUMIDITY..........100 PERCENT.
* 24 HR TREND.........UNCHANGED.
* WIND (20 FT)
* PLAINS...............SOUTHWEST WINDS 5 TO 10 MPH.
* CHANCE OF LIGHTNING...1 PERCENT.
* CWR...................ZERO.
WEDNESDAY
* SKY/WEATHER...........MOSTLY CLOUDY IN THE MORNING THEN BECOMING
MOSTLY SUNNY. AREAS OF FOG IN THE MORNING.
* MAX TEMPERATURE.......49-54.
* 24 HR TREND.........1 DEGREE COOLER.
* MIN HUMIDITY..........63-68 PERCENT.
* 24 HR TREND.........1 PERCENT DRIER.
* WIND (20 FT)
* PLAINS...............NORTHWEST WINDS 5 TO 15 MPH.
* CHANCE OF LIGHTNING...0 PERCENT.
* CWR...................ZERO.
FORECAST DAYS 3 THROUGH 7...
WEDNESDAY NIGHT
COLDER. MOSTLY CLOUDY. LOWS 24 TO 29.
NORTHWEST WINDS 5 TO 15 MPH.
THURSDAY
MOSTLY CLEAR. LOWS 26 TO 31. HIGHS 46 TO 51.
SOUTHWEST WINDS 5 TO 10 MPH.
FRIDAY
MOSTLY CLEAR. LOWS 30 TO 35. HIGHS 51 TO 56. SOUTHWEST
WINDS 5 TO 15 MPH.
SATURDAY
PARTLY CLOUDY. LOWS 29 TO 34. HIGHS 50 TO 55. WEST
WINDS 5 TO 15 MPH.
SUNDAY
PARTLY CLOUDY. LOWS 27 TO 32. HIGHS 51 TO 56.
MONDAY
PARTLY SUNNY. HIGHS 44 TO 49.
WYZ274-182315-
SHERIDAN COUNTY-
135 AM MST TUE NOV 18 2025
TODAY
* SKY/WEATHER...........MOSTLY CLOUDY. PATCHY FOG IN THE MORNING.
ISOLATED RAIN SHOWERS IN THE AFTERNOON.
* MAX TEMPERATURE.......54-59.
* 24 HR TREND.........1 DEGREE WARMER.
* MIN HUMIDITY..........55-60 PERCENT.
* 24 HR TREND.........1 PERCENT DRIER.
* WIND (20 FT)
* SLOPE/VALLEY.........LIGHT WINDS.
* RIDGETOP.............SOUTHWEST 5 TO 10 MPH.
* CHANCE OF LIGHTNING...1 PERCENT.
* CWR...................ZERO.
TONIGHT
* SKY/WEATHER...........MOSTLY CLOUDY. PATCHY FOG THROUGH THE
NIGHT.
* MIN TEMPERATURE.......30-35.
* 24 HR TREND.........2 DEGREES COOLER.
* MAX HUMIDITY..........93-98 PERCENT.
* 24 HR TREND.........1 PERCENT WETTER.
* WIND (20 FT)
* SLOPE/VALLEY.........LIGHT WINDS.
* RIDGETOP.............WEST 5 TO 15 MPH.
* CHANCE OF LIGHTNING...0 PERCENT.
* CWR...................ZERO.
WEDNESDAY
* SKY/WEATHER...........PARTLY SUNNY. PATCHY FOG IN THE MORNING.
* MAX TEMPERATURE.......48-53.
* 24 HR TREND.........6 DEGREES COOLER.
* MIN HUMIDITY..........52-57 PERCENT.
* 24 HR TREND.........3 PERCENT DRIER.
* WIND (20 FT)
* SLOPE/VALLEY.........NORTHWEST WINDS 5 TO 10 MPH.
* RIDGETOP.............WEST 5 TO 15 MPH.
* CHANCE OF LIGHTNING...0 PERCENT.
* CWR...................ZERO.
FORECAST DAYS 3 THROUGH 7...
WEDNESDAY NIGHT
COLDER. PARTLY CLOUDY. LOWS 22 TO 27. LIGHT
WINDS.
THURSDAY
MOSTLY CLEAR. LOWS 25 TO 30. HIGHS 49 TO 54. LIGHT
WINDS.
FRIDAY
MOSTLY CLEAR. LOWS 25 TO 30. HIGHS 54 TO 59. SOUTHWEST
WINDS 5 TO 10 MPH.
SATURDAY
PARTLY CLOUDY. LOWS 26 TO 31. HIGHS 53 TO 58.
SOUTHWEST WINDS 5 TO 10 MPH.
SUNDAY
PARTLY CLOUDY. LOWS 24 TO 29. HIGHS 54 TO 59.
MONDAY
PARTLY SUNNY. ISOLATED SHOWERS. HIGHS 47 TO 52.
WYZ284-182315-
BIGHORN NATIONAL FOREST-
135 AM MST TUE NOV 18 2025
TODAY
* SKY/WEATHER...........MOSTLY CLOUDY. PATCHY FOG IN THE MORNING.
ISOLATED RAIN SHOWERS AND SNOW SHOWERS IN THE MORNING, THEN
SCATTERED RAIN SHOWERS IN THE AFTERNOON.
* MAX TEMPERATURE.......40-45.
* 24 HR TREND.........4 DEGREES COOLER.
* MIN HUMIDITY..........62-67 PERCENT.
* 24 HR TREND.........1 PERCENT WETTER.
* WIND (20 FT)
* AT BURGESS JCT.......SOUTHWEST WINDS 5 TO 10 MPH.
* CHANCE OF LIGHTNING...1 PERCENT.
* CWR...................ZERO.
TONIGHT
* SKY/WEATHER...........MOSTLY CLOUDY. PATCHY FOG THROUGH THE
NIGHT.
* MIN TEMPERATURE.......24-29.
* 24 HR TREND.........3 DEGREES COOLER.
* MAX HUMIDITY..........88-93 PERCENT.
* 24 HR TREND.........4 PERCENT DRIER.
* WIND (20 FT)
* AT BURGESS JCT.......SOUTHWEST WINDS 5 TO 10 MPH.
* CHANCE OF LIGHTNING...0 PERCENT.
* CWR...................ZERO.
WEDNESDAY
* SKY/WEATHER...........PARTLY SUNNY. ISOLATED SNOW SHOWERS IN THE
AFTERNOON.
* MAX TEMPERATURE.......37-42.
* 24 HR TREND.........3 DEGREES COOLER.
* MIN HUMIDITY..........54-59 PERCENT.
* 24 HR TREND.........8 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...
WEDNESDAY NIGHT
PARTLY CLOUDY. LOWS 20 TO 25. SOUTHWEST WINDS
5 TO 10 MPH.
THURSDAY
MOSTLY CLEAR. LOWS 21 TO 26. HIGHS 39 TO 44.
SOUTHWEST WINDS 5 TO 10 MPH.
FRIDAY
MOSTLY CLEAR. LOWS 21 TO 26. HIGHS 40 TO 45. SOUTHWEST
WINDS 5 TO 15 MPH.
SATURDAY
PARTLY CLOUDY. LOWS 23 TO 28. HIGHS 39 TO 44.
SOUTHWEST WINDS 5 TO 15 MPH.
SUNDAY
PARTLY CLOUDY. ISOLATED SNOW SHOWERS. LOWS 21 TO 26.
HIGHS 41 TO 46.
MONDAY
PARTLY SUNNY. SCATTERED SNOW SHOWERS. HIGHS 35 TO 40.
WEATHER.GOV/BILLINGS
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page