062
FNUS55 KBYZ 150800
FWFBYZ
FIRE WEATHER PLANNING FORECAST FOR SCEN AND SERN MONTANA
NATIONAL WEATHER SERVICE BILLINGS MT
200 AM MDT MON SEP 15 2025
DISCUSSION
A PERIOD OF UNSETTLED AND COOLER WEATHER TODAY INTO WEDNESDAY.
BEST CHANCES FOR PRECIPITATION WILL BE FROM THIS AFTERNOON THROUGH
TUESDAY NIGHT. WETTING RAIN CHANCES THROUGH TONIGHT RANGE FROM 60
TO 90 PERCENT ACROSS THE DISTRICT, RANGING FROM 5 TO 70 PERCENT
TUESDAY/TUESDAY NIGHT EXCEPT FOR 80 TO 90 PERCENT OVER THE
SOUTHERN FOOTHILLS AND MOUNTAINS. MINRH VALUES WILL RANGE FROM THE
30S EAST TO AROUND 50 PERCENT OVER THE WESTERN FOOTHILLS TODAY,
AND STAYING GENERALLY ABOVE 40 PERCENT ACROSS THE DISTRICT TUESDAY
AND WEDNESDAY. A WARMING AND DRYING TREND ARRIVES FOR THE LATER
HALF OF THE WORK WEEK. CHAMBERS
MTZ123-152215-
GALLATIN NATIONAL FOREST-
200 AM MDT MON SEP 15 2025
TODAY
* SKY/WEATHER...........MOSTLY CLOUDY. NUMEROUS RAIN SHOWERS IN THE
MORNING, THEN RAIN SHOWERS AND SCATTERED THUNDERSTORMS IN THE
AFTERNOON.
* MAX TEMPERATURE.......59-67 AT 5000 FEET...49-59 AT 7000 FEET.
* 24 HR TREND.........16 DEGREES COOLER.
* MIN HUMIDITY..........56-61 PERCENT.
* 24 HR TREND.........34 PERCENT WETTER.
* WIND (20 FT)
* SLOPE/VALLEY.........NORTHWEST WINDS 5 TO 10 MPH.
* RIDGETOP.............SOUTHWEST 5 TO 10 MPH.
* CHANCE OF LIGHTNING...35 PERCENT.
* CWR...................70 PERCENT.
TONIGHT
* SKY/WEATHER...........MOSTLY CLOUDY. NUMEROUS RAIN SHOWERS AND
ISOLATED THUNDERSTORMS IN THE EVENING, THEN SCATTERED RAIN
SHOWERS OVERNIGHT.
* MIN TEMPERATURE.......39-49 AT 5000 FEET...31-41 AT 7000 FEET.
* 24 HR TREND.........2 DEGREES COOLER.
* MAX HUMIDITY..........84-94 PERCENT AT 5000 FEET...82-92 PERCENT
AT 7000 FEET.
* 24 HR TREND.........9 PERCENT WETTER.
* WIND (20 FT)
* SLOPE/VALLEY.........WEST WINDS 5 TO 10 MPH IN THE EVENING
BECOMING LIGHT OVERNIGHT.
* RIDGETOP.............NORTHWEST 5 TO 10 MPH.
* CHANCE OF LIGHTNING...21 PERCENT.
* CWR...................20 PERCENT.
TUESDAY
* SKY/WEATHER...........MOSTLY CLOUDY. PATCHY FOG IN THE MORNING.
SCATTERED RAIN SHOWERS IN THE MORNING, THEN SCATTERED RAIN
SHOWERS AND ISOLATED THUNDERSTORMS IN THE AFTERNOON.
* MAX TEMPERATURE.......60-68 AT 5000 FEET...49-59 AT 7000 FEET.
* 24 HR TREND.........2 DEGREES WARMER.
* MIN HUMIDITY..........53-63 PERCENT AT 5000 FEET...57-67 PERCENT
AT 7000 FEET.
* 24 HR TREND.........UNCHANGED.
* WIND (20 FT)
* SLOPE/VALLEY.........NORTH WINDS 5 TO 10 MPH.
* RIDGETOP.............NORTHEAST 10 TO 20 MPH.
* CHANCE OF LIGHTNING...20 PERCENT.
* CWR...................30 PERCENT.
FORECAST DAYS 3 THROUGH 7...
TUESDAY NIGHT
PARTLY CLOUDY. LOWS 39 TO 49. SOUTHEAST WINDS
5 TO 10 MPH.
WEDNESDAY
MOSTLY CLEAR. LOWS 41 TO 51. HIGHS 66 TO 76.
SOUTHEAST WINDS 5 TO 10 MPH.
THURSDAY
CLEAR. LOWS 40 TO 50. HIGHS 70 TO 80. SOUTH WINDS
5 TO 10 MPH.
FRIDAY
PARTLY CLOUDY. LOWS 43 TO 53. HIGHS 73 TO 83. SOUTH
WINDS 5 TO 10 MPH.
SATURDAY
PARTLY CLOUDY. LOWS 45 TO 55. HIGHS 73 TO 82.
SUNDAY
MOSTLY SUNNY. ISOLATED SHOWERS. HIGHS 72 TO 81.
MTZ124-152215-
WHEATLAND COUNTY/SWEET GRASS COUNTY-
200 AM MDT MON SEP 15 2025
TODAY
* SKY/WEATHER...........MOSTLY SUNNY. SCATTERED RAIN SHOWERS IN THE
MORNING, THEN SCATTERED RAIN SHOWERS AND ISOLATED THUNDERSTORMS
IN THE AFTERNOON.
* MAX TEMPERATURE.......68-73.
* 24 HR TREND.........12 DEGREES COOLER.
* MIN HUMIDITY..........33-38 PERCENT.
* 24 HR TREND.........16 PERCENT WETTER.
* WIND (20 FT)
* PLAINS...............NORTHWEST WINDS 10 TO 20 MPH.
* CHANCE OF LIGHTNING...23 PERCENT.
* CWR...................LESS THAN 10 PERCENT.
TONIGHT
* SKY/WEATHER...........MOSTLY CLOUDY. NUMEROUS RAIN SHOWERS AND
SCATTERED THUNDERSTORMS IN THE EVENING, THEN SCATTERED RAIN
SHOWERS AND ISOLATED THUNDERSTORMS OVERNIGHT. PATCHY FOG
OVERNIGHT.
* MIN TEMPERATURE.......44-49.
* 24 HR TREND.........3 DEGREES COOLER.
* MAX HUMIDITY..........91-96 PERCENT.
* 24 HR TREND.........20 PERCENT WETTER.
* WIND (20 FT)
* PLAINS...............WEST WINDS 5 TO 15 MPH.
* CHANCE OF LIGHTNING...29 PERCENT.
* CWR...................50 PERCENT.
TUESDAY
* SKY/WEATHER...........MOSTLY CLOUDY. PATCHY FOG IN THE MORNING.
SCATTERED 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 COOLER.
* MIN HUMIDITY..........50-55 PERCENT.
* 24 HR TREND.........17 PERCENT WETTER.
* WIND (20 FT)
* PLAINS...............NORTH WINDS 5 TO 15 MPH.
* CHANCE OF LIGHTNING...33 PERCENT.
* CWR...................50 PERCENT.
FORECAST DAYS 3 THROUGH 7...
TUESDAY NIGHT
PARTLY CLOUDY. PATCHY FOG. ISOLATED SHOWERS AND
THUNDERSTORMS. LOWS 42 TO 47. NORTHWEST WINDS 5 TO 10 MPH.
WEDNESDAY
MOSTLY CLEAR. LOWS 42 TO 47. HIGHS 73 TO 78.
SOUTHEAST WINDS 5 TO 15 MPH.
THURSDAY
CLEAR. LOWS 41 TO 46. HIGHS 72 TO 77. EAST WINDS 5 TO
15 MPH.
FRIDAY
MOSTLY CLEAR. LOWS 43 TO 48. HIGHS 75 TO 80. SOUTH
WINDS 5 TO 15 MPH.
SATURDAY
PARTLY CLOUDY. LOWS 46 TO 51. HIGHS 79 TO 84.
SUNDAY
MOSTLY SUNNY. ISOLATED SHOWERS. HIGHS 78 TO 83.
MTZ125-152215-
STILLWATER COUNTY-
200 AM MDT MON SEP 15 2025
TODAY
* SKY/WEATHER...........PARTLY SUNNY. NUMEROUS RAIN SHOWERS IN THE
MORNING, THEN NUMEROUS RAIN SHOWERS AND SCATTERED THUNDERSTORMS
IN THE AFTERNOON.
* MAX TEMPERATURE.......67-72.
* 24 HR TREND.........13 DEGREES COOLER.
* MIN HUMIDITY..........45-50 PERCENT.
* 24 HR TREND.........26 PERCENT WETTER.
* WIND (20 FT)
* PLAINS...............WEST WINDS 5 TO 10 MPH IN THE MORNING
SHIFTING TO THE NORTH IN THE AFTERNOON.
* CHANCE OF LIGHTNING...29 PERCENT.
* CWR...................40 PERCENT.
TONIGHT
* SKY/WEATHER...........MOSTLY CLOUDY. SCATTERED THUNDERSTORMS AND
RAIN SHOWERS IN THE EVENING, THEN NUMEROUS RAIN SHOWERS
OVERNIGHT.
* MIN TEMPERATURE.......46-51.
* 24 HR TREND.........3 DEGREES COOLER.
* MAX HUMIDITY..........82-87 PERCENT.
* 24 HR TREND.........23 PERCENT WETTER.
* WIND (20 FT)
* PLAINS...............WEST WINDS 5 TO 10 MPH.
* CHANCE OF LIGHTNING...28 PERCENT.
* CWR...................60 PERCENT.
TUESDAY
* SKY/WEATHER...........MOSTLY CLOUDY. NUMEROUS RAIN SHOWERS IN THE
MORNING, THEN RAIN SHOWERS AND SCATTERED THUNDERSTORMS IN THE
AFTERNOON.
* MAX TEMPERATURE.......63-68.
* 24 HR TREND.........4 DEGREES COOLER.
* MIN HUMIDITY..........54-59 PERCENT.
* 24 HR TREND.........9 PERCENT WETTER.
* WIND (20 FT)
* PLAINS...............NORTHWEST WINDS 5 TO 10 MPH.
* CHANCE OF LIGHTNING...29 PERCENT.
* CWR...................70 PERCENT.
FORECAST DAYS 3 THROUGH 7...
TUESDAY NIGHT
MOSTLY CLOUDY. SCATTERED SHOWERS AND ISOLATED
THUNDERSTORMS. LOWS 46 TO 51. WEST WINDS 5 TO 10 MPH.
WEDNESDAY
MOSTLY CLEAR. ISOLATED SHOWERS. LOWS 45 TO 50. HIGHS
70 TO 75. SOUTHWEST WINDS 5 TO 10 MPH.
THURSDAY
MOSTLY CLEAR. LOWS 45 TO 50. HIGHS 73 TO 78.
SOUTHWEST WINDS 5 TO 10 MPH.
FRIDAY
MOSTLY CLEAR. LOWS 48 TO 53. HIGHS 75 TO 80. SOUTH
WINDS 5 TO 10 MPH.
SATURDAY
PARTLY CLOUDY. LOWS 50 TO 55. HIGHS 79 TO 84.
SUNDAY
MOSTLY SUNNY. ISOLATED SHOWERS. HIGHS 79 TO 84.
MTZ126-152215-
BEARTOOTH RANGER DISTRICT CUSTER NATIONAL FOREST-
200 AM MDT MON SEP 15 2025
TODAY
* SKY/WEATHER...........MOSTLY CLOUDY. NUMEROUS RAIN SHOWERS IN THE
MORNING, THEN NUMEROUS RAIN SHOWERS AND SCATTERED THUNDERSTORMS
IN THE AFTERNOON.
* MAX TEMPERATURE.......62-71 AT 5000 FEET...54-64 AT 7000 FEET.
* 24 HR TREND.........5 DEGREES COOLER.
* MIN HUMIDITY..........44-54 PERCENT AT 5000 FEET...49-59 PERCENT
AT 7000 FEET.
* 24 HR TREND.........23 PERCENT WETTER.
* WIND (20 FT)
* SLOPE/VALLEY.........SOUTHWEST WINDS 5 TO 15 MPH IN THE MORNING
SHIFTING TO THE NORTHWEST 5 TO 10 MPH IN THE AFTERNOON.
* RIDGETOP.............SOUTHWEST 5 TO 15 MPH.
* CHANCE OF LIGHTNING...31 PERCENT.
* CWR...................50 PERCENT.
TONIGHT
* SKY/WEATHER...........MOSTLY CLOUDY. SCATTERED SHOWERS AND
THUNDERSTORMS IN THE EVENING, THEN NUMEROUS RAIN SHOWERS
OVERNIGHT.
* MIN TEMPERATURE.......46-51 AT 5000 FEET...36-46 AT 7000 FEET.
* 24 HR TREND.........5 DEGREES COOLER.
* MAX HUMIDITY..........73-83 PERCENT AT 5000 FEET...78-88 PERCENT
AT 7000 FEET.
* 24 HR TREND.........28 PERCENT WETTER.
* WIND (20 FT)
* SLOPE/VALLEY.........NORTHWEST WINDS 5 TO 15 MPH.
* RIDGETOP.............NORTHWEST 5 TO 10 MPH.
* CHANCE OF LIGHTNING...25 PERCENT.
* CWR...................60 PERCENT.
TUESDAY
* SKY/WEATHER...........MOSTLY CLOUDY. NUMEROUS RAIN SHOWERS IN THE
MORNING, THEN RAIN SHOWERS AND SCATTERED THUNDERSTORMS IN THE
AFTERNOON.
* MAX TEMPERATURE.......59-67 AT 5000 FEET...49-59 AT 7000 FEET.
* 24 HR TREND.........5 DEGREES COOLER.
* MIN HUMIDITY..........52-62 PERCENT AT 5000 FEET...63-73 PERCENT
AT 7000 FEET.
* 24 HR TREND.........19 PERCENT WETTER.
* WIND (20 FT)
* SLOPE/VALLEY.........NORTH WINDS 5 TO 10 MPH.
* RIDGETOP.............NORTH 5 TO 10 MPH.
* CHANCE OF LIGHTNING...27 PERCENT.
* CWR...................70 PERCENT.
FORECAST DAYS 3 THROUGH 7...
TUESDAY NIGHT
MOSTLY CLOUDY. SCATTERED SHOWERS AND ISOLATED
THUNDERSTORMS. LOWS 46 TO 51. WEST WINDS 5 TO 10 MPH.
WEDNESDAY
MOSTLY CLEAR. SCATTERED SHOWERS. LOWS 47 TO 52.
HIGHS 62 TO 72. WEST WINDS 5 TO 10 MPH.
THURSDAY
MOSTLY CLEAR. LOWS 46 TO 52. HIGHS 66 TO 74. WEST
WINDS 5 TO 10 MPH.
FRIDAY
MOSTLY CLEAR. LOWS 48 TO 55. HIGHS 67 TO 77. SOUTHWEST
WINDS 5 TO 10 MPH.
SATURDAY
PARTLY CLOUDY. LOWS 50 TO 57. HIGHS 71 TO 80.
SUNDAY
MOSTLY SUNNY. SCATTERED SHOWERS. HIGHS 72 TO 80.
MTZ127-152215-
GOLDEN VALLEY COUNTY/MUSSELSHELL COUNTY-
200 AM MDT MON SEP 15 2025
TODAY
* SKY/WEATHER...........SUNNY WITH ISOLATED RAIN SHOWERS IN THE
MORNING, THEN PARTLY SUNNY WITH SCATTERED RAIN SHOWERS AND
ISOLATED THUNDERSTORMS IN THE AFTERNOON.
* MAX TEMPERATURE.......70-75.
* 24 HR TREND.........7 DEGREES COOLER.
* MIN HUMIDITY..........39-44 PERCENT.
* 24 HR TREND.........11 PERCENT WETTER.
* WIND (20 FT)
* PLAINS...............WEST WINDS 5 TO 10 MPH.
* CHANCE OF LIGHTNING...24 PERCENT.
* CWR...................LESS THAN 10 PERCENT.
TONIGHT
* SKY/WEATHER...........MOSTLY CLOUDY. NUMEROUS RAIN SHOWERS AND
SCATTERED THUNDERSTORMS IN THE EVENING, THEN NUMEROUS RAIN
SHOWERS AND ISOLATED THUNDERSTORMS OVERNIGHT.
* MIN TEMPERATURE.......51-56.
* 24 HR TREND.........3 DEGREES COOLER.
* MAX HUMIDITY..........81-86 PERCENT.
* 24 HR TREND.........25 PERCENT WETTER.
* WIND (20 FT)
* PLAINS...............WEST WINDS 5 TO 10 MPH.
* CHANCE OF LIGHTNING...35 PERCENT.
* CWR...................70 PERCENT.
TUESDAY
* 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.......65-70.
* 24 HR TREND.........5 DEGREES COOLER.
* MIN HUMIDITY..........61-66 PERCENT.
* 24 HR TREND.........22 PERCENT WETTER.
* WIND (20 FT)
* PLAINS...............NORTHWEST WINDS 5 TO 10 MPH.
* CHANCE OF LIGHTNING...37 PERCENT.
* CWR...................50 PERCENT.
FORECAST DAYS 3 THROUGH 7...
TUESDAY NIGHT
MOSTLY CLOUDY. SCATTERED SHOWERS AND ISOLATED
THUNDERSTORMS. LOWS 51 TO 56. NORTHWEST WINDS 5 TO 10 MPH.
WEDNESDAY
MOSTLY CLEAR. ISOLATED SHOWERS. LOWS 50 TO 55. HIGHS
70 TO 75. EAST 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 54 TO 59. HIGHS 76 TO 81.
SUNDAY
SUNNY. HIGHS 78 TO 83.
MTZ128-152215-
YELLOWSTONE COUNTY-
200 AM MDT MON SEP 15 2025
TODAY
* SKY/WEATHER...........MOSTLY SUNNY WITH SCATTERED RAIN SHOWERS IN
THE MORNING, THEN MOSTLY CLOUDY WITH SCATTERED SHOWERS AND
THUNDERSTORMS IN THE AFTERNOON.
* MAX TEMPERATURE.......72-77.
* 24 HR TREND.........8 DEGREES COOLER.
* MIN HUMIDITY..........45-50 PERCENT.
* 24 HR TREND.........21 PERCENT WETTER.
* WIND (20 FT)
* PLAINS...............WEST WINDS 5 TO 15 MPH.
* CHANCE OF LIGHTNING...25 PERCENT.
* CWR...................10 PERCENT.
TONIGHT
* SKY/WEATHER...........MOSTLY CLOUDY. NUMEROUS RAIN SHOWERS AND
SCATTERED THUNDERSTORMS IN THE EVENING, THEN NUMEROUS RAIN
SHOWERS AND ISOLATED THUNDERSTORMS OVERNIGHT.
* MIN TEMPERATURE.......50-55.
* 24 HR TREND.........4 DEGREES COOLER.
* MAX HUMIDITY..........89-94 PERCENT.
* 24 HR TREND.........29 PERCENT WETTER.
* WIND (20 FT)
* PLAINS...............WEST WINDS 5 TO 15 MPH.
* CHANCE OF LIGHTNING...31 PERCENT.
* CWR...................60 PERCENT.
TUESDAY
* SKY/WEATHER...........MOSTLY CLOUDY. PATCHY FOG IN THE MORNING.
NUMEROUS RAIN SHOWERS IN THE MORNING, THEN NUMEROUS RAIN SHOWERS
AND SCATTERED THUNDERSTORMS IN THE AFTERNOON.
* MAX TEMPERATURE.......67-72.
* 24 HR TREND.........5 DEGREES COOLER.
* MIN HUMIDITY..........62-67 PERCENT.
* 24 HR TREND.........17 PERCENT WETTER.
* WIND (20 FT)
* PLAINS...............NORTHWEST WINDS 5 TO 10 MPH.
* CHANCE OF LIGHTNING...33 PERCENT.
* CWR...................60 PERCENT.
FORECAST DAYS 3 THROUGH 7...
TUESDAY NIGHT
MOSTLY CLOUDY. SCATTERED SHOWERS AND ISOLATED
THUNDERSTORMS. LOWS 50 TO 55. NORTHWEST WINDS 5 TO 10 MPH.
WEDNESDAY
MOSTLY CLEAR. ISOLATED SHOWERS. LOWS 48 TO 53. HIGHS
73 TO 78. SOUTHEAST WINDS 5 TO 10 MPH.
THURSDAY
MOSTLY CLEAR. LOWS 47 TO 52. HIGHS 74 TO 79. EAST
WINDS 5 TO 10 MPH.
FRIDAY
MOSTLY CLEAR. LOWS 49 TO 54. HIGHS 75 TO 80. EAST WINDS
5 TO 10 MPH.
SATURDAY
PARTLY CLOUDY. LOWS 52 TO 57. HIGHS 80 TO 85.
SUNDAY
MOSTLY SUNNY. HIGHS 81 TO 86.
MTZ129-152215-
CROW INDIAN RESERVATION/BIGHORN CANYON REC AREA-
200 AM MDT MON SEP 15 2025
TODAY
* SKY/WEATHER...........SUNNY WITH ISOLATED RAIN SHOWERS IN THE
MORNING, THEN PARTLY SUNNY WITH NUMEROUS RAIN SHOWERS AND
ISOLATED THUNDERSTORMS IN THE AFTERNOON.
* MAX TEMPERATURE.......62-72 AT 5000 FEET...55-63 AT 7000 FEET.
* 24 HR TREND.........7 DEGREES COOLER.
* MIN HUMIDITY..........42-52 PERCENT AT 5000 FEET...48-58 PERCENT
AT 7000 FEET.
* 24 HR TREND.........17 PERCENT WETTER.
* WIND (20 FT)
* SLOPE/VALLEY.........NORTHWEST WINDS 5 TO 15 MPH.
* RIDGETOP.............WEST 5 TO 15 MPH.
* CHANCE OF LIGHTNING...23 PERCENT.
* CWR...................20 PERCENT.
TONIGHT
* SKY/WEATHER...........MOSTLY CLOUDY. NUMEROUS RAIN SHOWERS AND
ISOLATED THUNDERSTORMS IN THE EVENING, THEN NUMEROUS RAIN SHOWERS
OVERNIGHT.
* MIN TEMPERATURE.......46-51 AT 5000 FEET...41-46 AT 7000 FEET.
* 24 HR TREND.........6 DEGREES COOLER.
* MAX HUMIDITY..........83-88 PERCENT.
* 24 HR TREND.........37 PERCENT WETTER.
* WIND (20 FT)
* SLOPE/VALLEY.........WEST WINDS 5 TO 15 MPH.
* RIDGETOP.............SOUTH 5 TO 10 MPH.
* CHANCE OF LIGHTNING...21 PERCENT.
* CWR...................LESS THAN 10 PERCENT.
TUESDAY
* SKY/WEATHER...........MOSTLY CLOUDY. SCATTERED RAIN SHOWERS IN
THE MORNING, THEN NUMEROUS RAIN SHOWERS AND ISOLATED
THUNDERSTORMS IN THE AFTERNOON.
* MAX TEMPERATURE.......58-68 AT 5000 FEET...49-57 AT 7000 FEET.
* 24 HR TREND.........7 DEGREES COOLER.
* MIN HUMIDITY..........51-61 PERCENT AT 5000 FEET...70-80 PERCENT
AT 7000 FEET.
* 24 HR TREND.........19 PERCENT WETTER.
* WIND (20 FT)
* SLOPE/VALLEY.........NORTHWEST WINDS 5 TO 15 MPH.
* RIDGETOP.............WEST 5 TO 10 MPH.
* CHANCE OF LIGHTNING...24 PERCENT.
* CWR...................LESS THAN 10 PERCENT.
FORECAST DAYS 3 THROUGH 7...
TUESDAY NIGHT
MOSTLY CLOUDY. SCATTERED SHOWERS AND
THUNDERSTORMS. LOWS 47 TO 52. WEST WINDS 5 TO 10 MPH.
WEDNESDAY
PARTLY CLOUDY. SCATTERED SHOWERS AND ISOLATED
THUNDERSTORMS. LOWS 47 TO 52. HIGHS 61 TO 71. NORTHEAST WINDS
5 TO 10 MPH.
THURSDAY
MOSTLY CLEAR. LOWS 46 TO 52. HIGHS 64 TO 74.
SOUTHEAST WINDS 5 TO 10 MPH.
FRIDAY
MOSTLY CLEAR. LOWS 48 TO 55. HIGHS 67 TO 77. EAST WINDS
5 TO 10 MPH.
SATURDAY
MOSTLY CLEAR. LOWS 52 TO 58. HIGHS 71 TO 81.
SUNDAY
MOSTLY SUNNY. HIGHS 72 TO 82.
MTZ130-152215-
NORTHERN ROSEBUD/NORTHERN TREASURE COUNTIES-
200 AM MDT MON SEP 15 2025
TODAY
* SKY/WEATHER...........MOSTLY SUNNY. ISOLATED RAIN SHOWERS IN THE
MORNING, THEN SCATTERED RAIN SHOWERS AND ISOLATED THUNDERSTORMS
IN THE AFTERNOON.
* MAX TEMPERATURE.......78-83.
* 24 HR TREND.........2 DEGREES COOLER.
* MIN HUMIDITY..........30-35 PERCENT.
* 24 HR TREND.........11 PERCENT WETTER.
* WIND (20 FT)
* PLAINS...............NORTHWEST WINDS 5 TO 15 MPH.
* CHANCE OF LIGHTNING...16 PERCENT.
* CWR...................ZERO.
TONIGHT
* SKY/WEATHER...........MOSTLY CLOUDY. NUMEROUS RAIN SHOWERS AND
SCATTERED THUNDERSTORMS IN THE EVENING, THEN NUMEROUS RAIN
SHOWERS AND ISOLATED THUNDERSTORMS OVERNIGHT.
* MIN TEMPERATURE.......52-57.
* 24 HR TREND.........1 DEGREE COOLER.
* MAX HUMIDITY..........86-91 PERCENT.
* 24 HR TREND.........26 PERCENT WETTER.
* WIND (20 FT)
* PLAINS...............WEST WINDS 5 TO 15 MPH.
* CHANCE OF LIGHTNING...42 PERCENT.
* CWR...................50 PERCENT.
TUESDAY
* SKY/WEATHER...........MOSTLY CLOUDY. PATCHY FOG IN THE MORNING.
NUMEROUS RAIN SHOWERS IN THE MORNING, THEN NUMEROUS RAIN SHOWERS
AND SCATTERED THUNDERSTORMS IN THE AFTERNOON.
* MAX TEMPERATURE.......71-76.
* 24 HR TREND.........7 DEGREES COOLER.
* MIN HUMIDITY..........47-52 PERCENT.
* 24 HR TREND.........17 PERCENT WETTER.
* WIND (20 FT)
* PLAINS...............NORTHWEST WINDS 5 TO 10 MPH.
* CHANCE OF LIGHTNING...30 PERCENT.
* CWR...................50 PERCENT.
FORECAST DAYS 3 THROUGH 7...
TUESDAY NIGHT
MOSTLY CLOUDY. SCATTERED SHOWERS AND
THUNDERSTORMS. LOWS 51 TO 56. NORTHWEST WINDS 5 TO 10 MPH.
WEDNESDAY
PARTLY CLOUDY. ISOLATED SHOWERS AND THUNDERSTORMS.
LOWS 50 TO 55. HIGHS 74 TO 79. NORTHEAST WINDS 5 TO 10 MPH.
THURSDAY
MOSTLY CLEAR. LOWS 48 TO 53. HIGHS 73 TO 78. EAST
WINDS 5 TO 10 MPH.
FRIDAY
MOSTLY CLEAR. LOWS 48 TO 53. HIGHS 73 TO 78. EAST WINDS
5 TO 10 MPH.
SATURDAY
PARTLY CLOUDY. LOWS 52 TO 57. HIGHS 79 TO 84.
SUNDAY
SUNNY. HIGHS 81 TO 86.
MTZ131-152215-
NORTHERN CHEYENNE INDIAN RESERVATION/ASHLAND RANGER DISTRICT
CUSTER NATL FOREST-
200 AM MDT MON SEP 15 2025
TODAY
* SKY/WEATHER...........MOSTLY SUNNY. SCATTERED RAIN SHOWERS AND
ISOLATED THUNDERSTORMS IN THE AFTERNOON.
* MAX TEMPERATURE.......76-81.
* 24 HR TREND.........5 DEGREES COOLER.
* MIN HUMIDITY..........32-37 PERCENT.
* 24 HR TREND.........11 PERCENT WETTER.
* WIND (20 FT)
* SLOPE/VALLEY.........NORTHWEST WINDS 5 TO 15 MPH.
* RIDGETOP.............WEST 5 TO 15 MPH.
* CHANCE OF LIGHTNING...19 PERCENT.
* CWR...................20 PERCENT.
TONIGHT
* SKY/WEATHER...........MOSTLY CLOUDY. NUMEROUS RAIN SHOWERS AND
SCATTERED THUNDERSTORMS IN THE EVENING, THEN SCATTERED RAIN
SHOWERS OVERNIGHT. PATCHY FOG OVERNIGHT.
* MIN TEMPERATURE.......47-52.
* 24 HR TREND.........3 DEGREES COOLER.
* MAX HUMIDITY..........91-96 PERCENT.
* 24 HR TREND.........39 PERCENT WETTER.
* WIND (20 FT)
* SLOPE/VALLEY.........WEST WINDS 5 TO 10 MPH.
* RIDGETOP.............LIGHT WINDS.
* CHANCE OF LIGHTNING...26 PERCENT.
* CWR...................30 PERCENT.
TUESDAY
* SKY/WEATHER...........PARTLY SUNNY. AREAS OF FOG IN THE MORNING.
SCATTERED RAIN SHOWERS IN THE MORNING, THEN SCATTERED RAIN
SHOWERS AND ISOLATED THUNDERSTORMS IN THE AFTERNOON.
* MAX TEMPERATURE.......68-73.
* 24 HR TREND.........8 DEGREES COOLER.
* MIN HUMIDITY..........47-52 PERCENT.
* 24 HR TREND.........15 PERCENT WETTER.
* WIND (20 FT)
* SLOPE/VALLEY.........NORTHWEST WINDS 5 TO 15 MPH.
* RIDGETOP.............SOUTHWEST 5 TO 10 MPH.
* CHANCE OF LIGHTNING...22 PERCENT.
* CWR...................LESS THAN 10 PERCENT.
FORECAST DAYS 3 THROUGH 7...
TUESDAY NIGHT
MOSTLY CLOUDY. SCATTERED SHOWERS AND
THUNDERSTORMS. LOWS 47 TO 52. NORTHWEST WINDS 5 TO 10 MPH.
WEDNESDAY
PARTLY CLOUDY. SCATTERED SHOWERS AND ISOLATED
THUNDERSTORMS. LOWS 45 TO 50. HIGHS 69 TO 74. NORTHEAST WINDS
5 TO 10 MPH.
THURSDAY
MOSTLY CLEAR. LOWS 44 TO 49. HIGHS 71 TO 76.
SOUTHEAST WINDS 5 TO 10 MPH.
FRIDAY
MOSTLY CLEAR. LOWS 45 TO 50. HIGHS 73 TO 78. SOUTHEAST
WINDS 5 TO 10 MPH.
SATURDAY
MOSTLY CLEAR. LOWS 48 TO 53. HIGHS 77 TO 82.
SUNDAY
SUNNY. HIGHS 80 TO 85.
MTZ132-152215-
CUSTER COUNTY-
200 AM MDT MON SEP 15 2025
TODAY
* SKY/WEATHER...........SUNNY. ISOLATED RAIN SHOWERS IN THE
AFTERNOON.
* MAX TEMPERATURE.......78-83.
* 24 HR TREND.........5 DEGREES WARMER.
* MIN HUMIDITY..........30-35 PERCENT.
* 24 HR TREND.........12 PERCENT DRIER.
* WIND (20 FT)
* PLAINS...............WEST WINDS 5 TO 10 MPH.
* CHANCE OF LIGHTNING...6 PERCENT.
* CWR...................ZERO.
TONIGHT
* SKY/WEATHER...........MOSTLY CLOUDY. NUMEROUS RAIN SHOWERS AND
SCATTERED THUNDERSTORMS IN THE EVENING, THEN SCATTERED RAIN
SHOWERS AND ISOLATED THUNDERSTORMS OVERNIGHT.
* MIN TEMPERATURE.......52-57.
* 24 HR TREND.........1 DEGREE COOLER.
* MAX HUMIDITY..........89-94 PERCENT.
* 24 HR TREND.........18 PERCENT WETTER.
* WIND (20 FT)
* PLAINS...............WEST WINDS 5 TO 10 MPH.
* CHANCE OF LIGHTNING...39 PERCENT.
* CWR...................60 PERCENT.
TUESDAY
* 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.......70-75.
* 24 HR TREND.........8 DEGREES COOLER.
* MIN HUMIDITY..........47-52 PERCENT.
* 24 HR TREND.........17 PERCENT WETTER.
* WIND (20 FT)
* PLAINS...............NORTHWEST WINDS 5 TO 15 MPH.
* CHANCE OF LIGHTNING...20 PERCENT.
* CWR...................ZERO.
FORECAST DAYS 3 THROUGH 7...
TUESDAY NIGHT
MOSTLY CLOUDY. SCATTERED SHOWERS AND
THUNDERSTORMS. LOWS 50 TO 55. NORTH WINDS 5 TO 10 MPH.
WEDNESDAY
PARTLY CLOUDY. ISOLATED SHOWERS AND THUNDERSTORMS.
LOWS 49 TO 54. HIGHS 70 TO 75. NORTHEAST WINDS 5 TO 10 MPH.
THURSDAY
PARTLY CLOUDY. ISOLATED SHOWERS. LOWS 48 TO 53. HIGHS
68 TO 73. EAST WINDS 5 TO 10 MPH.
FRIDAY
PARTLY CLOUDY. LOWS 48 TO 53. HIGHS 68 TO 73. EAST
WINDS 5 TO 10 MPH.
SATURDAY
MOSTLY CLEAR. LOWS 50 TO 55. HIGHS 74 TO 79.
SUNDAY
SUNNY. HIGHS 78 TO 83.
MTZ133-152215-
SIOUX RANGER DISTRICT CUSTER NATIONAL FOREST-
200 AM MDT MON SEP 15 2025
TODAY
* SKY/WEATHER...........SUNNY. SCATTERED RAIN SHOWERS IN THE
AFTERNOON.
* MAX TEMPERATURE.......80-85.
* 24 HR TREND.........10 DEGREES WARMER.
* MIN HUMIDITY..........29-34 PERCENT.
* 24 HR TREND.........15 PERCENT DRIER.
* WIND (20 FT)
* PLAINS...............WEST WINDS 5 TO 15 MPH.
* CHANCE OF LIGHTNING...4 PERCENT.
* CWR...................ZERO.
TONIGHT
* SKY/WEATHER...........MOSTLY CLOUDY. SCATTERED THUNDERSTORMS AND
RAIN SHOWERS IN THE EVENING, THEN SCATTERED RAIN SHOWERS AND
ISOLATED THUNDERSTORMS OVERNIGHT. PATCHY FOG OVERNIGHT.
* MIN TEMPERATURE.......51-56.
* 24 HR TREND.........1 DEGREE COOLER.
* MAX HUMIDITY..........92-97 PERCENT.
* 24 HR TREND.........9 PERCENT WETTER.
* WIND (20 FT)
* PLAINS...............NORTHWEST WINDS 5 TO 15 MPH.
* CHANCE OF LIGHTNING...30 PERCENT.
* CWR...................50 PERCENT.
TUESDAY
* 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.......72-77.
* 24 HR TREND.........8 DEGREES COOLER.
* MIN HUMIDITY..........49-54 PERCENT.
* 24 HR TREND.........20 PERCENT WETTER.
* WIND (20 FT)
* PLAINS...............NORTHWEST WINDS 5 TO 15 MPH.
* CHANCE OF LIGHTNING...19 PERCENT.
* CWR...................ZERO.
FORECAST DAYS 3 THROUGH 7...
TUESDAY NIGHT
MOSTLY CLOUDY. PATCHY FOG. SCATTERED SHOWERS AND
ISOLATED THUNDERSTORMS. LOWS 51 TO 56. NORTH WINDS 5 TO 10 MPH.
WEDNESDAY
MOSTLY CLOUDY. AREAS OF FOG. SCATTERED SHOWERS AND
ISOLATED THUNDERSTORMS. LOWS 50 TO 55. HIGHS 68 TO 73. NORTHEAST
WINDS 5 TO 10 MPH.
THURSDAY
MOSTLY CLOUDY. SCATTERED SHOWERS AND ISOLATED
THUNDERSTORMS. LOWS 48 TO 53. HIGHS 65 TO 70. NORTHEAST WINDS
5 TO 15 MPH.
FRIDAY
PARTLY CLOUDY. LOWS 47 TO 52. HIGHS 67 TO 72. NORTHEAST
WINDS 5 TO 15 MPH.
SATURDAY
PARTLY CLOUDY. LOWS 49 TO 54. HIGHS 74 TO 79.
SUNDAY
SUNNY. HIGHS 77 TO 82.
WYZ274-152215-
SHERIDAN COUNTY-
200 AM MDT MON SEP 15 2025
TODAY
* SKY/WEATHER...........SUNNY WITH ISOLATED RAIN SHOWERS IN THE
MORNING, THEN MOSTLY CLOUDY WITH NUMEROUS RAIN SHOWERS AND
SCATTERED THUNDERSTORMS IN THE AFTERNOON.
* MAX TEMPERATURE.......73-78.
* 24 HR TREND.........1 DEGREE COOLER.
* MIN HUMIDITY..........38-43 PERCENT.
* 24 HR TREND.........17 PERCENT WETTER.
* WIND (20 FT)
* SLOPE/VALLEY.........NORTHWEST WINDS 5 TO 15 MPH.
* RIDGETOP.............WEST 5 TO 10 MPH.
* CHANCE OF LIGHTNING...29 PERCENT.
* CWR...................30 PERCENT.
TONIGHT
* SKY/WEATHER...........MOSTLY CLOUDY. NUMEROUS RAIN SHOWERS AND
ISOLATED THUNDERSTORMS IN THE EVENING, THEN SCATTERED RAIN
SHOWERS OVERNIGHT. AREAS OF FOG OVERNIGHT.
* MIN TEMPERATURE.......40-45.
* 24 HR TREND.........6 DEGREES COOLER.
* MAX HUMIDITY..........100 PERCENT.
* 24 HR TREND.........35 PERCENT WETTER.
* WIND (20 FT)
* SLOPE/VALLEY.........WEST WINDS 5 TO 10 MPH.
* RIDGETOP.............SOUTHWEST 5 TO 10 MPH.
* CHANCE OF LIGHTNING...22 PERCENT.
* CWR...................20 PERCENT.
TUESDAY
* SKY/WEATHER...........MOSTLY CLOUDY. AREAS OF FOG IN THE MORNING.
SCATTERED RAIN SHOWERS IN THE MORNING, THEN NUMEROUS RAIN SHOWERS
AND SCATTERED THUNDERSTORMS IN THE AFTERNOON.
* MAX TEMPERATURE.......65-70.
* 24 HR TREND.........8 DEGREES COOLER.
* MIN HUMIDITY..........55-60 PERCENT.
* 24 HR TREND.........17 PERCENT WETTER.
* WIND (20 FT)
* SLOPE/VALLEY.........NORTHWEST WINDS 5 TO 10 MPH.
* RIDGETOP.............WEST 5 TO 10 MPH.
* CHANCE OF LIGHTNING...25 PERCENT.
* CWR...................30 PERCENT.
FORECAST DAYS 3 THROUGH 7...
TUESDAY NIGHT
MOSTLY CLOUDY. AREAS OF FOG. SCATTERED SHOWERS
AND THUNDERSTORMS. LOWS 42 TO 47. WEST WINDS 5 TO 10 MPH.
WEDNESDAY
MOSTLY CLOUDY. AREAS OF FOG. SCATTERED SHOWERS AND
ISOLATED THUNDERSTORMS. LOWS 40 TO 45. HIGHS 67 TO 72. NORTHWEST
WINDS 5 TO 10 MPH.
THURSDAY
MOSTLY CLEAR. LOWS 40 TO 45. HIGHS 71 TO 76.
SOUTHEAST WINDS 5 TO 10 MPH.
FRIDAY
MOSTLY CLEAR. LOWS 43 TO 48. HIGHS 73 TO 78. SOUTHEAST
WINDS 5 TO 10 MPH.
SATURDAY
MOSTLY CLEAR. LOWS 45 TO 50. HIGHS 77 TO 82.
SUNDAY
SUNNY. HIGHS 80 TO 85.
WYZ284-152215-
BIGHORN NATIONAL FOREST-
200 AM MDT MON SEP 15 2025
TODAY
* SKY/WEATHER...........MOSTLY SUNNY WITH SCATTERED RAIN SHOWERS IN
THE MORNING, THEN MOSTLY CLOUDY WITH NUMEROUS RAIN SHOWERS AND
SCATTERED THUNDERSTORMS IN THE AFTERNOON.
* MAX TEMPERATURE.......56-61.
* 24 HR TREND.........3 DEGREES COOLER.
* MIN HUMIDITY..........42-47 PERCENT.
* 24 HR TREND.........20 PERCENT WETTER.
* WIND (20 FT)
* AT BURGESS JCT.......SOUTHWEST WINDS 5 TO 15 MPH.
* CHANCE OF LIGHTNING...32 PERCENT.
* CWR...................10 PERCENT.
TONIGHT
* SKY/WEATHER...........MOSTLY CLOUDY. NUMEROUS RAIN SHOWERS AND
ISOLATED THUNDERSTORMS IN THE EVENING, THEN SCATTERED RAIN
SHOWERS OVERNIGHT. AREAS OF FOG THROUGH THE NIGHT.
* MIN TEMPERATURE.......32-37.
* 24 HR TREND.........7 DEGREES COOLER.
* MAX HUMIDITY..........100 PERCENT.
* 24 HR TREND.........39 PERCENT WETTER.
* WIND (20 FT)
* AT BURGESS JCT.......SOUTHWEST WINDS 5 TO 10 MPH.
* CHANCE OF LIGHTNING...23 PERCENT.
* CWR...................20 PERCENT.
TUESDAY
* SKY/WEATHER...........MOSTLY CLOUDY. AREAS OF FOG IN THE MORNING.
NUMEROUS RAIN SHOWERS IN THE MORNING, THEN RAIN SHOWERS AND
ISOLATED THUNDERSTORMS IN THE AFTERNOON.
* MAX TEMPERATURE.......48-53.
* 24 HR TREND.........8 DEGREES COOLER.
* MIN HUMIDITY..........60-65 PERCENT.
* 24 HR TREND.........18 PERCENT WETTER.
* WIND (20 FT)
* AT BURGESS JCT.......WEST WINDS 5 TO 10 MPH IN THE MORNING
SHIFTING TO THE NORTHEAST 5 TO 15 MPH IN THE AFTERNOON.
* CHANCE OF LIGHTNING...24 PERCENT.
* CWR...................70 PERCENT.
FORECAST DAYS 3 THROUGH 7...
TUESDAY NIGHT
MOSTLY CLOUDY. AREAS OF FOG. SCATTERED SHOWERS
AND ISOLATED THUNDERSTORMS. LOWS 34 TO 39. NORTHWEST WINDS 5 TO
10 MPH.
WEDNESDAY
MOSTLY CLOUDY. AREAS OF FOG. NUMEROUS SHOWERS AND
ISOLATED THUNDERSTORMS. LOWS 32 TO 37. HIGHS 51 TO 56. NORTH
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. WEST WINDS
5 TO 15 MPH.
SATURDAY
MOSTLY CLEAR. LOWS 39 TO 44. HIGHS 62 TO 67.
SUNDAY
MOSTLY SUNNY. ISOLATED SHOWERS. HIGHS 63 TO 68.
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