591
FNUS55 KBYZ 160709
FWFBYZ
FIRE WEATHER PLANNING FORECAST FOR SCEN AND SERN MONTANA
NATIONAL WEATHER SERVICE BILLINGS MT
109 AM MDT TUE SEP 16 2025
DISCUSSION
COOL AND UNSETTLED WEATHER TODAY AND TONIGHT, CLEARING WEST AND
CENTRAL ON WEDNESDAY. WETTING RAIN CHANCES ARE ABOVE 70 PERCENT
CENTRAL AND WEST TODAY AND TONIGHT, AND 40 TO 70 PERCENT EAST.
WETTING RAIN CHANCES WEDNESDAY ARE ALONG AND SOUTH OF A BAKER TO
FORT SMITH LINE AND RANGE FROM 40 TO 90 PERCENT. LIGHT SNOW
ACCUMULATIONS ARE EXPECTED FOR MOUNTAIN AREAS ABOVE 10KFT THROUGH
WEDNESDAY MORNING. WARMER AND MAINLY DRY CONDITIONS DEVELOP FOR
THURSDAY THROUGH THE WEEKEND. CHAMBERS
MTZ123-162215-
GALLATIN NATIONAL FOREST-
109 AM MDT TUE SEP 16 2025
TODAY
* SKY/WEATHER...........MOSTLY CLOUDY. PATCHY FOG IN THE MORNING.
RAIN SHOWERS IN THE MORNING, THEN NUMEROUS RAIN SHOWERS AND
SCATTERED THUNDERSTORMS IN THE AFTERNOON.
* MAX TEMPERATURE.......57-66 AT 5000 FEET...48-58 AT 7000 FEET.
* 24 HR TREND.........1 DEGREE WARMER.
* MIN HUMIDITY..........64-74 PERCENT AT 5000 FEET...67-77 PERCENT
AT 7000 FEET.
* 24 HR TREND.........22 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...26 PERCENT.
* CWR...................80 PERCENT.
TONIGHT
* SKY/WEATHER...........MOSTLY CLOUDY. ISOLATED RAIN SHOWERS IN THE
EVENING.
* MIN TEMPERATURE.......39-49 AT 5000 FEET...31-41 AT 7000 FEET.
* 24 HR TREND.........UNCHANGED.
* MAX HUMIDITY..........95-100 PERCENT.
* 24 HR TREND.........6 PERCENT WETTER.
* WIND (20 FT)
* SLOPE/VALLEY.........NORTHEAST WINDS 5 TO 10 MPH IN THE EVENING
BECOMING LIGHT OVERNIGHT.
* RIDGETOP.............NORTHEAST 5 TO 15 MPH.
* CHANCE OF LIGHTNING...11 PERCENT.
* CWR...................ZERO.
WEDNESDAY
* SKY/WEATHER...........MOSTLY SUNNY.
* MAX TEMPERATURE.......64-74 AT 5000 FEET...54-64 AT 7000 FEET.
* 24 HR TREND.........8 DEGREES WARMER.
* MIN HUMIDITY..........41-51 PERCENT AT 5000 FEET...47-57 PERCENT
AT 7000 FEET.
* 24 HR TREND.........30 PERCENT DRIER.
* WIND (20 FT)
* SLOPE/VALLEY.........LIGHT WINDS IN THE MORNING BECOMING NORTH 5
TO 10 MPH IN THE AFTERNOON.
* RIDGETOP.............NORTHEAST 5 TO 15 MPH.
* CHANCE OF LIGHTNING...4 PERCENT.
* CWR...................ZERO.
FORECAST DAYS 3 THROUGH 7...
WEDNESDAY NIGHT
MOSTLY CLEAR. LOWS 38 TO 48. SOUTHEAST WINDS
5 TO 10 MPH.
THURSDAY
MOSTLY CLEAR. LOWS 40 TO 50. HIGHS 69 TO 79. SOUTH
WINDS 5 TO 10 MPH.
FRIDAY
PARTLY CLOUDY. LOWS 45 TO 55. HIGHS 72 TO 82. SOUTHWEST
WINDS 5 TO 10 MPH.
SATURDAY
PARTLY CLOUDY. LOWS 45 TO 55. HIGHS 73 TO 80.
SOUTHWEST WINDS 5 TO 10 MPH.
SUNDAY
PARTLY CLOUDY. ISOLATED SHOWERS AND THUNDERSTORMS. LOWS
42 TO 52. HIGHS 66 TO 75.
MONDAY
SUNNY. HIGHS 67 TO 77.
MTZ124-162215-
WHEATLAND COUNTY/SWEET GRASS COUNTY-
109 AM MDT TUE SEP 16 2025
TODAY
* SKY/WEATHER...........MOSTLY CLOUDY. PATCHY FOG IN THE MORNING.
RAIN SHOWERS AND ISOLATED THUNDERSTORMS IN THE MORNING, THEN
NUMEROUS RAIN SHOWERS AND SCATTERED THUNDERSTORMS IN THE
AFTERNOON.
* MAX TEMPERATURE.......64-69.
* 24 HR TREND.........6 DEGREES WARMER.
* MIN HUMIDITY..........68-73 PERCENT.
* 24 HR TREND.........10 PERCENT WETTER.
* WIND (20 FT)
* PLAINS...............NORTHWEST WINDS 5 TO 15 MPH IN THE MORNING
SHIFTING TO THE NORTHEAST IN THE AFTERNOON.
* CHANCE OF LIGHTNING...35 PERCENT.
* CWR...................70 PERCENT.
TONIGHT
* SKY/WEATHER...........MOSTLY CLOUDY. SCATTERED RAIN SHOWERS IN
THE EVENING. AREAS OF FOG OVERNIGHT.
* MIN TEMPERATURE.......42-47.
* 24 HR TREND.........3 DEGREES COOLER.
* MAX HUMIDITY..........91-96 PERCENT.
* 24 HR TREND.........UNCHANGED.
* WIND (20 FT)
* PLAINS...............WEST WINDS 5 TO 15 MPH.
* CHANCE OF LIGHTNING...14 PERCENT.
* CWR...................30 PERCENT.
WEDNESDAY
* SKY/WEATHER...........SUNNY. PATCHY FOG IN THE MORNING.
* MAX TEMPERATURE.......70-75.
* 24 HR TREND.........6 DEGREES WARMER.
* MIN HUMIDITY..........43-48 PERCENT.
* 24 HR TREND.........25 PERCENT DRIER.
* WIND (20 FT)
* PLAINS...............NORTHWEST WINDS 5 TO 10 MPH IN THE MORNING
SHIFTING TO THE EAST IN THE AFTERNOON.
* CHANCE OF LIGHTNING...5 PERCENT.
* CWR...................ZERO.
FORECAST DAYS 3 THROUGH 7...
WEDNESDAY NIGHT
MOSTLY CLEAR. LOWS 42 TO 47. SOUTH WINDS 5 TO
10 MPH.
THURSDAY
MOSTLY CLEAR. LOWS 40 TO 45. HIGHS 72 TO 77. SOUTH
WINDS 5 TO 15 MPH.
FRIDAY
MOSTLY CLEAR. LOWS 44 TO 49. HIGHS 75 TO 80. SOUTH
WINDS 5 TO 15 MPH.
SATURDAY
PARTLY CLOUDY. LOWS 47 TO 52. HIGHS 79 TO 84. WEST
WINDS 10 TO 20 MPH.
SUNDAY
PARTLY CLOUDY. LOWS 44 TO 49. HIGHS 73 TO 78.
MONDAY
SUNNY. HIGHS 72 TO 77.
MTZ125-162215-
STILLWATER COUNTY-
109 AM MDT TUE SEP 16 2025
TODAY
* SKY/WEATHER...........MOSTLY CLOUDY. RAIN SHOWERS AND ISOLATED
THUNDERSTORMS IN THE MORNING, THEN RAIN SHOWERS AND SCATTERED
THUNDERSTORMS IN THE AFTERNOON.
* MAX TEMPERATURE.......61-66.
* 24 HR TREND.........1 DEGREE WARMER.
* MIN HUMIDITY..........71-76 PERCENT.
* 24 HR TREND.........22 PERCENT WETTER.
* WIND (20 FT)
* PLAINS...............NORTHWEST WINDS 5 TO 10 MPH.
* CHANCE OF LIGHTNING...36 PERCENT.
* CWR...................60 PERCENT.
TONIGHT
* SKY/WEATHER...........MOSTLY CLOUDY. SCATTERED SHOWERS AND
THUNDERSTORMS IN THE EVENING, THEN ISOLATED RAIN SHOWERS
OVERNIGHT.
* MIN TEMPERATURE.......46-51.
* 24 HR TREND.........UNCHANGED.
* MAX HUMIDITY..........100 PERCENT.
* 24 HR TREND.........1 PERCENT DRIER.
* WIND (20 FT)
* PLAINS...............WEST WINDS 5 TO 10 MPH.
* CHANCE OF LIGHTNING...25 PERCENT.
* CWR...................30 PERCENT.
WEDNESDAY
* SKY/WEATHER...........MOSTLY SUNNY. ISOLATED RAIN SHOWERS IN THE
MORNING, THEN ISOLATED SHOWERS AND THUNDERSTORMS IN THE
AFTERNOON.
* MAX TEMPERATURE.......68-73.
* 24 HR TREND.........7 DEGREES WARMER.
* MIN HUMIDITY..........47-52 PERCENT.
* 24 HR TREND.........24 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...16 PERCENT.
* CWR...................LESS THAN 10 PERCENT.
FORECAST DAYS 3 THROUGH 7...
WEDNESDAY NIGHT
MOSTLY CLEAR. LOWS 44 TO 49. SOUTH WINDS 5 TO
10 MPH.
THURSDAY
MOSTLY CLEAR. LOWS 44 TO 49. HIGHS 73 TO 78. SOUTH
WINDS 5 TO 10 MPH.
FRIDAY
MOSTLY CLEAR. LOWS 49 TO 54. HIGHS 76 TO 81. SOUTH
WINDS 5 TO 10 MPH.
SATURDAY
PARTLY CLOUDY. LOWS 50 TO 55. HIGHS 79 TO 84. WEST
WINDS 5 TO 15 MPH.
SUNDAY
PARTLY CLOUDY. ISOLATED SHOWERS AND THUNDERSTORMS. LOWS
46 TO 51. HIGHS 75 TO 80.
MONDAY
SUNNY. HIGHS 75 TO 80.
MTZ126-162215-
BEARTOOTH RANGER DISTRICT CUSTER NATIONAL FOREST-
109 AM MDT TUE SEP 16 2025
TODAY
* SKY/WEATHER...........MOSTLY CLOUDY. NUMEROUS RAIN SHOWERS IN THE
MORNING, THEN NUMEROUS RAIN SHOWERS AND SCATTERED THUNDERSTORMS
IN THE AFTERNOON.
* MAX TEMPERATURE.......59-66 AT 5000 FEET...48-58 AT 7000 FEET.
* 24 HR TREND.........3 DEGREES COOLER.
* MIN HUMIDITY..........62-72 PERCENT AT 5000 FEET...70-80 PERCENT
AT 7000 FEET.
* 24 HR TREND.........39 PERCENT WETTER.
* WIND (20 FT)
* SLOPE/VALLEY.........NORTH WINDS 5 TO 10 MPH.
* RIDGETOP.............NORTH 5 TO 10 MPH.
* CHANCE OF LIGHTNING...32 PERCENT.
* CWR...................60 PERCENT.
TONIGHT
* SKY/WEATHER...........MOSTLY CLOUDY. SCATTERED RAIN SHOWERS AND
ISOLATED THUNDERSTORMS IN THE EVENING, THEN SCATTERED RAIN
SHOWERS OVERNIGHT.
* MIN TEMPERATURE.......46-51 AT 5000 FEET...36-46 AT 7000 FEET.
* 24 HR TREND.........1 DEGREE COOLER.
* MAX HUMIDITY..........100 PERCENT.
* 24 HR TREND.........UNCHANGED.
* WIND (20 FT)
* SLOPE/VALLEY.........NORTHWEST WINDS 5 TO 10 MPH.
* RIDGETOP.............NORTH 5 TO 15 MPH.
* CHANCE OF LIGHTNING...23 PERCENT.
* CWR...................30 PERCENT.
WEDNESDAY
* SKY/WEATHER...........PARTLY SUNNY. SCATTERED RAIN SHOWERS IN THE
MORNING, THEN SCATTERED RAIN SHOWERS AND ISOLATED THUNDERSTORMS
IN THE AFTERNOON.
* MAX TEMPERATURE.......61-69 AT 5000 FEET...52-62 AT 7000 FEET.
* 24 HR TREND.........5 DEGREES WARMER.
* MIN HUMIDITY..........51-61 PERCENT AT 5000 FEET...61-71 PERCENT
AT 7000 FEET.
* 24 HR TREND.........5 PERCENT DRIER.
* WIND (20 FT)
* SLOPE/VALLEY.........NORTH WINDS 5 TO 10 MPH.
* RIDGETOP.............NORTH 5 TO 15 MPH.
* CHANCE OF LIGHTNING...20 PERCENT.
* CWR...................20 PERCENT.
FORECAST DAYS 3 THROUGH 7...
WEDNESDAY NIGHT
MOSTLY CLEAR. LOWS 45 TO 51. WEST WINDS 5 TO
10 MPH.
THURSDAY
MOSTLY CLEAR. LOWS 46 TO 53. HIGHS 64 TO 74. SOUTH
WINDS 5 TO 10 MPH.
FRIDAY
PARTLY CLOUDY. LOWS 49 TO 57. HIGHS 67 TO 77. SOUTHWEST
WINDS 5 TO 10 MPH.
SATURDAY
PARTLY CLOUDY. LOWS 50 TO 56. HIGHS 71 TO 81.
SOUTHWEST WINDS 5 TO 15 MPH.
SUNDAY
PARTLY CLOUDY. ISOLATED SHOWERS AND THUNDERSTORMS. LOWS
47 TO 53. HIGHS 68 TO 76.
MONDAY
SUNNY. HIGHS 67 TO 75.
MTZ127-162215-
GOLDEN VALLEY COUNTY/MUSSELSHELL COUNTY-
109 AM MDT TUE SEP 16 2025
TODAY
* SKY/WEATHER...........MOSTLY CLOUDY WITH NUMEROUS RAIN SHOWERS
AND SCATTERED THUNDERSTORMS.
* MAX TEMPERATURE.......64-69.
* 24 HR TREND.........2 DEGREES COOLER.
* MIN HUMIDITY..........63-68 PERCENT.
* 24 HR TREND.........25 PERCENT WETTER.
* WIND (20 FT)
* PLAINS...............NORTH WINDS 5 TO 10 MPH.
* CHANCE OF LIGHTNING...48 PERCENT.
* CWR...................50 PERCENT.
TONIGHT
* SKY/WEATHER...........MOSTLY CLOUDY. SCATTERED THUNDERSTORMS AND
RAIN SHOWERS IN THE EVENING.
* MIN TEMPERATURE.......50-55.
* 24 HR TREND.........UNCHANGED.
* MAX HUMIDITY..........85-90 PERCENT.
* 24 HR TREND.........3 PERCENT WETTER.
* WIND (20 FT)
* PLAINS...............NORTHWEST WINDS 5 TO 10 MPH.
* CHANCE OF LIGHTNING...36 PERCENT.
* CWR...................30 PERCENT.
WEDNESDAY
* SKY/WEATHER...........MOSTLY SUNNY.
* MAX TEMPERATURE.......68-73.
* 24 HR TREND.........4 DEGREES WARMER.
* MIN HUMIDITY..........44-49 PERCENT.
* 24 HR TREND.........19 PERCENT DRIER.
* WIND (20 FT)
* PLAINS...............NORTH WINDS 5 TO 10 MPH.
* CHANCE OF LIGHTNING...10 PERCENT.
* CWR...................ZERO.
FORECAST DAYS 3 THROUGH 7...
WEDNESDAY NIGHT
MOSTLY CLEAR. LOWS 50 TO 55. SOUTHEAST WINDS
5 TO 10 MPH.
THURSDAY
MOSTLY CLEAR. LOWS 48 TO 53. HIGHS 70 TO 75.
SOUTHEAST WINDS 5 TO 10 MPH.
FRIDAY
MOSTLY CLEAR. LOWS 50 TO 55. HIGHS 72 TO 77. SOUTHEAST
WINDS 5 TO 10 MPH.
SATURDAY
PARTLY CLOUDY. LOWS 55 TO 60. HIGHS 79 TO 84. WEST
WINDS 5 TO 10 MPH.
SUNDAY
PARTLY CLOUDY. LOWS 51 TO 56. HIGHS 74 TO 79.
MONDAY
SUNNY. HIGHS 72 TO 77.
MTZ128-162215-
YELLOWSTONE COUNTY-
109 AM MDT TUE SEP 16 2025
TODAY
* SKY/WEATHER...........MOSTLY CLOUDY. NUMEROUS RAIN SHOWERS AND
ISOLATED THUNDERSTORMS IN THE MORNING, THEN NUMEROUS RAIN SHOWERS
AND SCATTERED THUNDERSTORMS IN THE AFTERNOON.
* MAX TEMPERATURE.......66-71.
* 24 HR TREND.........2 DEGREES WARMER.
* MIN HUMIDITY..........63-68 PERCENT.
* 24 HR TREND.........17 PERCENT WETTER.
* WIND (20 FT)
* PLAINS...............NORTHWEST WINDS 5 TO 10 MPH.
* CHANCE OF LIGHTNING...44 PERCENT.
* CWR...................60 PERCENT.
TONIGHT
* SKY/WEATHER...........MOSTLY CLOUDY. SCATTERED THUNDERSTORMS AND
RAIN SHOWERS IN THE EVENING, THEN ISOLATED RAIN SHOWERS
OVERNIGHT.
* MIN TEMPERATURE.......50-55.
* 24 HR TREND.........UNCHANGED.
* MAX HUMIDITY..........88-93 PERCENT.
* 24 HR TREND.........5 PERCENT DRIER.
* WIND (20 FT)
* PLAINS...............WEST WINDS 5 TO 10 MPH.
* CHANCE OF LIGHTNING...35 PERCENT.
* CWR...................40 PERCENT.
WEDNESDAY
* SKY/WEATHER...........MOSTLY SUNNY. ISOLATED RAIN SHOWERS IN THE
MORNING. PATCHY FOG IN THE MORNING.
* MAX TEMPERATURE.......70-75.
* 24 HR TREND.........4 DEGREES WARMER.
* MIN HUMIDITY..........46-51 PERCENT.
* 24 HR TREND.........17 PERCENT DRIER.
* WIND (20 FT)
* PLAINS...............NORTHWEST WINDS 5 TO 10 MPH.
* CHANCE OF LIGHTNING...12 PERCENT.
* CWR...................ZERO.
FORECAST DAYS 3 THROUGH 7...
WEDNESDAY NIGHT
MOSTLY CLEAR. LOWS 49 TO 54. SOUTHEAST WINDS
5 TO 10 MPH.
THURSDAY
MOSTLY CLEAR. LOWS 47 TO 52. HIGHS 74 TO 79.
SOUTHEAST WINDS 5 TO 10 MPH.
FRIDAY
MOSTLY CLEAR. LOWS 50 TO 55. HIGHS 76 TO 81. SOUTHEAST
WINDS 5 TO 10 MPH.
SATURDAY
PARTLY CLOUDY. LOWS 53 TO 58. HIGHS 82 TO 87. WEST
WINDS 5 TO 15 MPH.
SUNDAY
PARTLY CLOUDY. LOWS 49 TO 54. HIGHS 78 TO 83.
MONDAY
SUNNY. HIGHS 76 TO 81.
MTZ129-162215-
CROW INDIAN RESERVATION/BIGHORN CANYON REC AREA-
109 AM MDT TUE SEP 16 2025
TODAY
* SKY/WEATHER...........PARTLY SUNNY. SCATTERED RAIN SHOWERS IN THE
MORNING, THEN NUMEROUS RAIN SHOWERS AND SCATTERED THUNDERSTORMS
IN THE AFTERNOON.
* MAX TEMPERATURE.......58-68 AT 5000 FEET...49-57 AT 7000 FEET.
* 24 HR TREND.........3 DEGREES COOLER.
* MIN HUMIDITY..........62-72 PERCENT AT 5000 FEET...71-81 PERCENT
AT 7000 FEET.
* 24 HR TREND.........16 PERCENT WETTER.
* WIND (20 FT)
* SLOPE/VALLEY.........NORTHWEST WINDS 5 TO 15 MPH.
* RIDGETOP.............SOUTHWEST 5 TO 10 MPH.
* CHANCE OF LIGHTNING...27 PERCENT.
* CWR...................40 PERCENT.
TONIGHT
* SKY/WEATHER...........MOSTLY CLOUDY. SCATTERED THUNDERSTORMS AND
RAIN SHOWERS IN THE EVENING, THEN SCATTERED RAIN SHOWERS
OVERNIGHT.
* MIN TEMPERATURE.......47-52 AT 5000 FEET...42-47 AT 7000 FEET.
* 24 HR TREND.........1 DEGREE WARMER.
* MAX HUMIDITY..........93-98 PERCENT.
* 24 HR TREND.........8 PERCENT WETTER.
* WIND (20 FT)
* SLOPE/VALLEY.........WEST WINDS 5 TO 10 MPH.
* RIDGETOP.............NORTHEAST 5 TO 10 MPH.
* CHANCE OF LIGHTNING...29 PERCENT.
* CWR...................30 PERCENT.
WEDNESDAY
* SKY/WEATHER...........PATCHY FOG IN THE MORNING. CLOUDY WITH
SCATTERED RAIN SHOWERS IN THE MORNING, THEN PARTLY SUNNY WITH
SCATTERED RAIN SHOWERS AND ISOLATED THUNDERSTORMS IN THE
AFTERNOON.
* MAX TEMPERATURE.......59-69 AT 5000 FEET...51-59 AT 7000 FEET.
* 24 HR TREND.........UNCHANGED.
* MIN HUMIDITY..........56-66 PERCENT AT 5000 FEET...64-74 PERCENT
AT 7000 FEET.
* 24 HR TREND.........3 PERCENT WETTER.
* WIND (20 FT)
* SLOPE/VALLEY.........NORTHWEST WINDS 5 TO 15 MPH.
* RIDGETOP.............NORTHEAST 10 TO 20 MPH.
* CHANCE OF LIGHTNING...21 PERCENT.
* CWR...................40 PERCENT.
FORECAST DAYS 3 THROUGH 7...
WEDNESDAY NIGHT
PARTLY CLOUDY. LOWS 46 TO 51. SOUTH WINDS 5 TO
10 MPH.
THURSDAY
MOSTLY CLEAR. LOWS 46 TO 53. HIGHS 64 TO 74.
SOUTHEAST WINDS 5 TO 10 MPH.
FRIDAY
MOSTLY CLEAR. LOWS 49 TO 57. HIGHS 68 TO 78. SOUTHEAST
WINDS 5 TO 10 MPH.
SATURDAY
PARTLY CLOUDY. LOWS 52 TO 57. HIGHS 72 TO 82. WEST
WINDS 5 TO 10 MPH.
SUNDAY
PARTLY CLOUDY. ISOLATED SHOWERS. LOWS 49 TO 54. HIGHS
68 TO 78.
MONDAY
SUNNY. HIGHS 66 TO 76.
MTZ130-162215-
NORTHERN ROSEBUD/NORTHERN TREASURE COUNTIES-
109 AM MDT TUE SEP 16 2025
TODAY
* SKY/WEATHER...........PARTLY SUNNY. PATCHY FOG IN THE MORNING.
SCATTERED RAIN SHOWERS IN THE MORNING, THEN SCATTERED
THUNDERSTORMS AND RAIN SHOWERS IN THE AFTERNOON.
* MAX TEMPERATURE.......72-77.
* 24 HR TREND.........4 DEGREES COOLER.
* MIN HUMIDITY..........47-52 PERCENT.
* 24 HR TREND.........28 PERCENT WETTER.
* WIND (20 FT)
* PLAINS...............NORTHWEST WINDS 5 TO 10 MPH.
* CHANCE OF LIGHTNING...35 PERCENT.
* CWR...................20 PERCENT.
TONIGHT
* SKY/WEATHER...........MOSTLY CLOUDY. SCATTERED THUNDERSTORMS AND
RAIN SHOWERS IN THE EVENING, THEN ISOLATED RAIN SHOWERS
OVERNIGHT.
* MIN TEMPERATURE.......51-56.
* 24 HR TREND.........1 DEGREE COOLER.
* MAX HUMIDITY..........90-95 PERCENT.
* 24 HR TREND.........2 PERCENT WETTER.
* WIND (20 FT)
* PLAINS...............NORTHWEST WINDS 5 TO 10 MPH.
* CHANCE OF LIGHTNING...33 PERCENT.
* CWR...................20 PERCENT.
WEDNESDAY
* SKY/WEATHER...........PARTLY SUNNY. PATCHY FOG IN THE MORNING.
ISOLATED SHOWERS AND THUNDERSTORMS IN THE AFTERNOON.
* MAX TEMPERATURE.......72-77.
* 24 HR TREND.........UNCHANGED.
* MIN HUMIDITY..........44-49 PERCENT.
* 24 HR TREND.........3 PERCENT DRIER.
* WIND (20 FT)
* PLAINS...............NORTH WINDS 5 TO 10 MPH.
* CHANCE OF LIGHTNING...15 PERCENT.
* CWR...................10 PERCENT.
FORECAST DAYS 3 THROUGH 7...
WEDNESDAY NIGHT
MOSTLY CLEAR. LOWS 49 TO 54. EAST WINDS 5 TO
10 MPH.
THURSDAY
MOSTLY CLEAR. LOWS 47 TO 52. HIGHS 72 TO 77. EAST
WINDS 5 TO 10 MPH.
FRIDAY
MOSTLY CLEAR. LOWS 47 TO 52. HIGHS 73 TO 78. EAST WINDS
5 TO 10 MPH.
SATURDAY
PARTLY CLOUDY. LOWS 53 TO 58. HIGHS 81 TO 86.
SOUTHWEST WINDS 5 TO 10 MPH.
SUNDAY
PARTLY CLOUDY. ISOLATED SHOWERS. LOWS 50 TO 55. HIGHS
78 TO 83.
MONDAY
SUNNY. HIGHS 73 TO 78.
MTZ131-162215-
NORTHERN CHEYENNE INDIAN RESERVATION/ASHLAND RANGER DISTRICT
CUSTER NATL FOREST-
109 AM MDT TUE SEP 16 2025
TODAY
* SKY/WEATHER...........PARTLY SUNNY. PATCHY FOG IN THE MORNING.
SCATTERED RAIN SHOWERS IN THE MORNING, THEN SCATTERED RAIN
SHOWERS AND ISOLATED THUNDERSTORMS IN THE AFTERNOON.
* MAX TEMPERATURE.......67-72.
* 24 HR TREND.........9 DEGREES COOLER.
* MIN HUMIDITY..........50-55 PERCENT.
* 24 HR TREND.........20 PERCENT WETTER.
* WIND (20 FT)
* SLOPE/VALLEY.........NORTHWEST WINDS 5 TO 10 MPH.
* RIDGETOP.............SOUTH 5 TO 10 MPH.
* CHANCE OF LIGHTNING...17 PERCENT.
* CWR...................10 PERCENT.
TONIGHT
* SKY/WEATHER...........MOSTLY CLOUDY. SCATTERED RAIN SHOWERS AND
ISOLATED THUNDERSTORMS IN THE EVENING, THEN SCATTERED RAIN
SHOWERS OVERNIGHT. PATCHY FOG OVERNIGHT.
* MIN TEMPERATURE.......47-52.
* 24 HR TREND.........1 DEGREE WARMER.
* MAX HUMIDITY..........93-98 PERCENT.
* 24 HR TREND.........1 PERCENT WETTER.
* WIND (20 FT)
* SLOPE/VALLEY.........NORTHWEST WINDS 5 TO 10 MPH.
* RIDGETOP.............NORTHEAST 5 TO 10 MPH.
* CHANCE OF LIGHTNING...20 PERCENT.
* CWR...................10 PERCENT.
WEDNESDAY
* SKY/WEATHER...........MOSTLY CLOUDY. AREAS OF FOG IN THE MORNING.
SCATTERED RAIN SHOWERS IN THE MORNING, THEN SCATTERED RAIN
SHOWERS AND ISOLATED THUNDERSTORMS IN THE AFTERNOON.
* MAX TEMPERATURE.......67-72.
* 24 HR TREND.........UNCHANGED.
* MIN HUMIDITY..........59-64 PERCENT.
* 24 HR TREND.........9 PERCENT WETTER.
* WIND (20 FT)
* SLOPE/VALLEY.........NORTH WINDS 5 TO 10 MPH.
* RIDGETOP.............NORTH 10 TO 20 MPH.
* CHANCE OF LIGHTNING...23 PERCENT.
* CWR...................40 PERCENT.
FORECAST DAYS 3 THROUGH 7...
WEDNESDAY NIGHT
PARTLY CLOUDY. PATCHY FOG. LOWS 45 TO 50.
NORTHWEST WINDS 5 TO 10 MPH.
THURSDAY
MOSTLY CLEAR. LOWS 43 TO 48. HIGHS 69 TO 74.
SOUTHEAST WINDS 5 TO 10 MPH.
FRIDAY
MOSTLY CLEAR. LOWS 45 TO 50. HIGHS 73 TO 78. SOUTHEAST
WINDS 5 TO 10 MPH.
SATURDAY
PARTLY CLOUDY. LOWS 49 TO 54. HIGHS 80 TO 85.
SOUTHWEST WINDS 5 TO 10 MPH.
SUNDAY
PARTLY CLOUDY. LOWS 46 TO 51. HIGHS 77 TO 82.
MONDAY
SUNNY. HIGHS 73 TO 78.
MTZ132-162215-
CUSTER COUNTY-
109 AM MDT TUE SEP 16 2025
TODAY
* SKY/WEATHER...........MOSTLY SUNNY. ISOLATED RAIN SHOWERS IN THE
MORNING, THEN SCATTERED RAIN SHOWERS AND ISOLATED THUNDERSTORMS
IN THE AFTERNOON.
* MAX TEMPERATURE.......70-75.
* 24 HR TREND.........8 DEGREES COOLER.
* MIN HUMIDITY..........49-54 PERCENT.
* 24 HR TREND.........18 PERCENT WETTER.
* WIND (20 FT)
* PLAINS...............WEST WINDS 5 TO 10 MPH.
* CHANCE OF LIGHTNING...16 PERCENT.
* CWR...................LESS THAN 10 PERCENT.
TONIGHT
* SKY/WEATHER...........MOSTLY CLOUDY WITH SCATTERED RAIN SHOWERS
AND ISOLATED THUNDERSTORMS. PATCHY FOG OVERNIGHT.
* MIN TEMPERATURE.......51-56.
* 24 HR TREND.........UNCHANGED.
* MAX HUMIDITY..........93-98 PERCENT.
* 24 HR TREND.........4 PERCENT WETTER.
* WIND (20 FT)
* PLAINS...............NORTH WINDS 5 TO 10 MPH.
* CHANCE OF LIGHTNING...20 PERCENT.
* CWR...................40 PERCENT.
WEDNESDAY
* SKY/WEATHER...........PARTLY SUNNY. PATCHY FOG IN THE MORNING.
ISOLATED RAIN SHOWERS IN THE MORNING, THEN SCATTERED RAIN SHOWERS
AND ISOLATED THUNDERSTORMS IN THE AFTERNOON.
* MAX TEMPERATURE.......69-74.
* 24 HR TREND.........1 DEGREE COOLER.
* MIN HUMIDITY..........54-59 PERCENT.
* 24 HR TREND.........5 PERCENT WETTER.
* WIND (20 FT)
* PLAINS...............NORTHEAST WINDS 5 TO 10 MPH.
* CHANCE OF LIGHTNING...19 PERCENT.
* CWR...................20 PERCENT.
FORECAST DAYS 3 THROUGH 7...
WEDNESDAY NIGHT
PARTLY CLOUDY. AREAS OF FOG. LOWS 48 TO 53.
EAST WINDS 5 TO 10 MPH.
THURSDAY
PARTLY CLOUDY. LOWS 46 TO 51. HIGHS 67 TO 72. EAST
WINDS 5 TO 10 MPH.
FRIDAY
MOSTLY CLEAR. LOWS 47 TO 52. HIGHS 69 TO 74. EAST WINDS
5 TO 10 MPH.
SATURDAY
PARTLY CLOUDY. LOWS 52 TO 57. HIGHS 76 TO 81. SOUTH
WINDS 5 TO 10 MPH.
SUNDAY
PARTLY CLOUDY. LOWS 51 TO 56. HIGHS 76 TO 81.
MONDAY
SUNNY. HIGHS 70 TO 75.
MTZ133-162215-
SIOUX RANGER DISTRICT CUSTER NATIONAL FOREST-
109 AM MDT TUE SEP 16 2025
TODAY
* SKY/WEATHER...........MOSTLY SUNNY. PATCHY FOG IN THE MORNING.
ISOLATED RAIN SHOWERS IN THE MORNING, THEN SCATTERED RAIN SHOWERS
AND ISOLATED THUNDERSTORMS IN THE AFTERNOON.
* MAX TEMPERATURE.......71-76.
* 24 HR TREND.........10 DEGREES COOLER.
* MIN HUMIDITY..........55-60 PERCENT.
* 24 HR TREND.........29 PERCENT WETTER.
* WIND (20 FT)
* PLAINS...............SOUTHWEST WINDS 5 TO 15 MPH.
* CHANCE OF LIGHTNING...15 PERCENT.
* CWR...................ZERO.
TONIGHT
* SKY/WEATHER...........MOSTLY CLOUDY. SCATTERED RAIN SHOWERS AND
ISOLATED THUNDERSTORMS IN THE EVENING, THEN SCATTERED RAIN
SHOWERS OVERNIGHT. AREAS OF FOG OVERNIGHT.
* MIN TEMPERATURE.......52-57.
* 24 HR TREND.........1 DEGREE WARMER.
* MAX HUMIDITY..........95-100 PERCENT.
* 24 HR TREND.........4 PERCENT WETTER.
* WIND (20 FT)
* PLAINS...............NORTH WINDS 5 TO 10 MPH.
* CHANCE OF LIGHTNING...24 PERCENT.
* CWR...................20 PERCENT.
WEDNESDAY
* SKY/WEATHER...........MOSTLY CLOUDY. AREAS OF FOG IN THE MORNING.
SCATTERED RAIN SHOWERS AND ISOLATED THUNDERSTORMS IN THE MORNING,
THEN SCATTERED THUNDERSTORMS AND RAIN SHOWERS IN THE AFTERNOON.
* MAX TEMPERATURE.......67-72.
* 24 HR TREND.........4 DEGREES COOLER.
* MIN HUMIDITY..........71-76 PERCENT.
* 24 HR TREND.........16 PERCENT WETTER.
* WIND (20 FT)
* PLAINS...............NORTHEAST WINDS 5 TO 15 MPH.
* CHANCE OF LIGHTNING...30 PERCENT.
* CWR...................50 PERCENT.
FORECAST DAYS 3 THROUGH 7...
WEDNESDAY NIGHT
MOSTLY CLOUDY. AREAS OF FOG. SCATTERED SHOWERS
AND ISOLATED THUNDERSTORMS. LOWS 48 TO 53. NORTHEAST WINDS 5 TO
15 MPH.
THURSDAY
PARTLY CLOUDY. SCATTERED SHOWERS. LOWS 46 TO 51.
HIGHS 65 TO 70. NORTHEAST WINDS 5 TO 15 MPH.
FRIDAY
MOSTLY CLEAR. LOWS 46 TO 51. HIGHS 69 TO 74. EAST WINDS
5 TO 10 MPH.
SATURDAY
PARTLY CLOUDY. LOWS 50 TO 55. HIGHS 75 TO 80. SOUTH
WINDS 5 TO 10 MPH.
SUNDAY
PARTLY CLOUDY. LOWS 50 TO 55. HIGHS 75 TO 80.
MONDAY
SUNNY. HIGHS 72 TO 77.
WYZ274-162215-
SHERIDAN COUNTY-
109 AM MDT TUE SEP 16 2025
TODAY
* SKY/WEATHER...........AREAS OF FOG IN THE MORNING. MOSTLY SUNNY
WITH SCATTERED RAIN SHOWERS IN THE MORNING, THEN MOSTLY CLOUDY
WITH NUMEROUS RAIN SHOWERS AND SCATTERED THUNDERSTORMS IN THE
AFTERNOON.
* MAX TEMPERATURE.......65-70.
* 24 HR TREND.........4 DEGREES COOLER.
* MIN HUMIDITY..........53-58 PERCENT.
* 24 HR TREND.........24 PERCENT WETTER.
* WIND (20 FT)
* SLOPE/VALLEY.........NORTHWEST WINDS 5 TO 10 MPH.
* RIDGETOP.............LIGHT WINDS.
* CHANCE OF LIGHTNING...25 PERCENT.
* CWR...................10 PERCENT.
TONIGHT
* SKY/WEATHER...........MOSTLY CLOUDY. SCATTERED RAIN SHOWERS AND
ISOLATED THUNDERSTORMS IN THE EVENING, THEN SCATTERED RAIN
SHOWERS OVERNIGHT. PATCHY FOG IN THE EVENING. AREAS OF FOG
OVERNIGHT.
* MIN TEMPERATURE.......41-46.
* 24 HR TREND.........2 DEGREES WARMER.
* MAX HUMIDITY..........100 PERCENT.
* 24 HR TREND.........UNCHANGED.
* WIND (20 FT)
* SLOPE/VALLEY.........WEST WINDS 5 TO 10 MPH.
* RIDGETOP.............NORTHEAST 5 TO 10 MPH.
* CHANCE OF LIGHTNING...23 PERCENT.
* CWR...................20 PERCENT.
WEDNESDAY
* SKY/WEATHER...........MOSTLY CLOUDY. AREAS OF FOG IN THE MORNING.
NUMEROUS RAIN SHOWERS IN THE MORNING, THEN NUMEROUS RAIN SHOWERS
AND ISOLATED THUNDERSTORMS IN THE AFTERNOON.
* MAX TEMPERATURE.......65-70.
* 24 HR TREND.........UNCHANGED.
* MIN HUMIDITY..........61-66 PERCENT.
* 24 HR TREND.........8 PERCENT WETTER.
* WIND (20 FT)
* SLOPE/VALLEY.........NORTHWEST WINDS 5 TO 10 MPH.
* RIDGETOP.............NORTH 5 TO 15 MPH.
* CHANCE OF LIGHTNING...18 PERCENT.
* CWR...................50 PERCENT.
FORECAST DAYS 3 THROUGH 7...
WEDNESDAY NIGHT
PARTLY CLOUDY. AREAS OF FOG. ISOLATED SHOWERS
AND THUNDERSTORMS. LOWS 40 TO 45. WEST WINDS 5 TO 10 MPH.
THURSDAY
MOSTLY CLEAR. LOWS 40 TO 45. HIGHS 69 TO 74. SOUTH
WINDS 5 TO 10 MPH.
FRIDAY
MOSTLY CLEAR. LOWS 43 TO 48. HIGHS 73 TO 78. SOUTHEAST
WINDS 5 TO 10 MPH.
SATURDAY
PARTLY CLOUDY. LOWS 47 TO 52. HIGHS 79 TO 84. WEST
WINDS 5 TO 10 MPH.
SUNDAY
PARTLY CLOUDY. ISOLATED SHOWERS. LOWS 44 TO 49. HIGHS
76 TO 81.
MONDAY
SUNNY. HIGHS 73 TO 78.
WYZ284-162215-
BIGHORN NATIONAL FOREST-
109 AM MDT TUE SEP 16 2025
TODAY
* SKY/WEATHER...........PARTLY SUNNY. PATCHY FOG IN THE MORNING.
NUMEROUS RAIN SHOWERS IN THE MORNING, THEN NUMEROUS RAIN SHOWERS
AND SCATTERED THUNDERSTORMS IN THE AFTERNOON.
* MAX TEMPERATURE.......49-54.
* 24 HR TREND.........7 DEGREES COOLER.
* MIN HUMIDITY..........64-69 PERCENT.
* 24 HR TREND.........27 PERCENT WETTER.
* WIND (20 FT)
* AT BURGESS JCT.......SOUTHWEST WINDS 5 TO 10 MPH IN THE MORNING
SHIFTING TO THE NORTHEAST 5 TO 15 MPH IN THE AFTERNOON.
* CHANCE OF LIGHTNING...29 PERCENT.
* CWR...................50 PERCENT.
TONIGHT
* SKY/WEATHER...........MOSTLY CLOUDY. NUMEROUS RAIN SHOWERS AND
SCATTERED THUNDERSTORMS IN THE EVENING, THEN SCATTERED RAIN
SHOWERS OVERNIGHT. AREAS OF FOG THROUGH THE NIGHT.
* MIN TEMPERATURE.......32-37.
* 24 HR TREND.........1 DEGREE WARMER.
* MAX HUMIDITY..........100 PERCENT.
* 24 HR TREND.........UNCHANGED.
* WIND (20 FT)
* AT BURGESS JCT.......NORTHWEST WINDS 5 TO 10 MPH.
* CHANCE OF LIGHTNING...26 PERCENT.
* CWR...................40 PERCENT.
WEDNESDAY
* SKY/WEATHER...........MOSTLY CLOUDY. AREAS OF FOG IN THE MORNING.
NUMEROUS RAIN SHOWERS IN THE MORNING, THEN NUMEROUS RAIN SHOWERS
AND ISOLATED THUNDERSTORMS IN THE AFTERNOON.
* MAX TEMPERATURE.......49-54.
* 24 HR TREND.........UNCHANGED.
* MIN HUMIDITY..........72-77 PERCENT.
* 24 HR TREND.........8 PERCENT WETTER.
* WIND (20 FT)
* AT BURGESS JCT.......NORTH WINDS 5 TO 15 MPH.
* CHANCE OF LIGHTNING...20 PERCENT.
* CWR...................60 PERCENT.
FORECAST DAYS 3 THROUGH 7...
WEDNESDAY NIGHT
PARTLY CLOUDY. AREAS OF FOG. ISOLATED SHOWERS.
LOWS 31 TO 36. WEST WINDS 5 TO 15 MPH.
THURSDAY
MOSTLY CLEAR. LOWS 33 TO 38. HIGHS 54 TO 59.
SOUTHWEST WINDS 5 TO 15 MPH.
FRIDAY
MOSTLY CLEAR. LOWS 37 TO 42. HIGHS 59 TO 64. SOUTHWEST
WINDS 5 TO 15 MPH.
SATURDAY
PARTLY CLOUDY. LOWS 39 TO 44. HIGHS 63 TO 68.
SOUTHWEST WINDS 5 TO 15 MPH.
SUNDAY
PARTLY CLOUDY. ISOLATED SHOWERS. LOWS 36 TO 41. HIGHS
59 TO 64.
MONDAY
SUNNY. HIGHS 58 TO 63.
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