595
FNUS55 KBYZ 210719
FWFBYZ
FIRE WEATHER PLANNING FORECAST FOR SCEN AND SERN MONTANA
NATIONAL WEATHER SERVICE BILLINGS MT
119 AM MDT TUE JUL 21 2026
DISCUSSION
AFTER YESTERDAYS BRIEF BREAK, THE AIR MASS WILL MOISTEN UP AGAIN,
LEADING TO DAILY WET THUNDERSTORMS TODAY THROUGH THURSDAY.
ACTIVITY WILL BE MAINLY OVER THE MOUNTAINS TODAY, THEN MOST OF
THE DISTRICTS WEDNESDAY/THURSDAY. STORMS COULD PRODUCE VERY HEAVY
RAIN AND ERRATIC WIND GUSTS. LOOK FOR SEASONABLE TEMPERATURES AND
ELEVATED HUMIDITIES THE NEXT FEW DAYS. EXPECT HOTTER & DRIER
CONDITIONS FRIDAY THROUGH THE WEEKEND, WITH A SLIGHT CHANCE OF
HIGH-BASED THUNDERSTORMS EACH DAY. BT
MTZ123-212215-
GALLATIN NATIONAL FOREST-
119 AM MDT TUE JUL 21 2026
TODAY
* SKY/WEATHER...........PARTLY SUNNY. ISOLATED SHOWERS AND
THUNDERSTORMS IN THE AFTERNOON.
* MAX TEMPERATURE.......80-90 AT 5000 FEET...69-79 AT 7000 FEET.
* 24 HR TREND.........2 DEGREES COOLER.
* MIN HUMIDITY..........33-43 PERCENT AT 5000 FEET...36-46 PERCENT
AT 7000 FEET.
* 24 HR TREND.........15 PERCENT WETTER.
* WIND (20 FT)
* SLOPE/VALLEY.........NORTH WINDS 5 TO 10 MPH.
* RIDGETOP.............SOUTHWEST 5 TO 10 MPH.
* CHANCE OF LIGHTNING...23 PERCENT.
* CWR...................ZERO.
TONIGHT
* SKY/WEATHER...........PARTLY CLOUDY. ISOLATED SHOWERS AND
THUNDERSTORMS IN THE EVENING.
* MIN TEMPERATURE.......54-64 AT 5000 FEET...52-62 AT 7000 FEET.
* 24 HR TREND.........3 DEGREES WARMER.
* MAX HUMIDITY..........72-82 PERCENT AT 5000 FEET...70-80 PERCENT
AT 7000 FEET.
* 24 HR TREND.........10 PERCENT WETTER.
* WIND (20 FT)
* SLOPE/VALLEY.........EAST WINDS 5 TO 10 MPH IN THE EVENING
BECOMING LIGHT OVERNIGHT.
* RIDGETOP.............NORTH 5 TO 10 MPH.
* CHANCE OF LIGHTNING...20 PERCENT.
* CWR...................ZERO.
WEDNESDAY
* SKY/WEATHER...........MOSTLY SUNNY IN THE MORNING, THEN MOSTLY
CLOUDY WITH NUMEROUS RAIN SHOWERS AND SCATTERED THUNDERSTORMS IN
THE AFTERNOON.
* MAX TEMPERATURE.......81-91 AT 5000 FEET...70-80 AT 7000 FEET.
* 24 HR TREND.........1 DEGREE WARMER.
* MIN HUMIDITY..........36-46 PERCENT AT 5000 FEET...42-52 PERCENT
AT 7000 FEET.
* 24 HR TREND.........3 PERCENT WETTER.
* WIND (20 FT)
* SLOPE/VALLEY.........LIGHT WINDS IN THE MORNING BECOMING
NORTHWEST 5 TO 10 MPH IN THE AFTERNOON.
* RIDGETOP.............NORTH 5 TO 10 MPH.
* CHANCE OF LIGHTNING...48 PERCENT.
* CWR...................40 PERCENT.
FORECAST DAYS 3 THROUGH 7...
WEDNESDAY NIGHT
MOSTLY CLOUDY. SHOWERS AND SCATTERED
THUNDERSTORMS. LOWS 55 TO 65. LIGHT WINDS.
THURSDAY
PARTLY CLOUDY. SCATTERED SHOWERS AND THUNDERSTORMS.
LOWS 56 TO 66. HIGHS 81 TO 89. SOUTHWEST WINDS 5 TO 10 MPH.
FRIDAY
MOSTLY CLEAR. LOWS 59 TO 69. HIGHS 90 TO 97. SOUTHWEST
WINDS 5 TO 10 MPH.
SATURDAY
PARTLY CLOUDY. ISOLATED SHOWERS AND THUNDERSTORMS.
LOWS 59 TO 69. HIGHS 90 TO 98. SOUTH WINDS 5 TO 10 MPH.
SUNDAY
PARTLY CLOUDY. ISOLATED SHOWERS AND THUNDERSTORMS. LOWS
57 TO 67. HIGHS 88 TO 96.
MONDAY
MOSTLY SUNNY. ISOLATED SHOWERS AND THUNDERSTORMS. HIGHS
86 TO 95.
MTZ124-212215-
WHEATLAND COUNTY/SWEET GRASS COUNTY-
119 AM MDT TUE JUL 21 2026
TODAY
* SKY/WEATHER...........MOSTLY SUNNY.
* MAX TEMPERATURE.......81-86.
* 24 HR TREND.........2 DEGREES COOLER.
* MIN HUMIDITY..........30-35 PERCENT.
* 24 HR TREND.........6 PERCENT WETTER.
* WIND (20 FT)
* PLAINS...............SOUTHEAST WINDS 5 TO 15 MPH.
* CHANCE OF LIGHTNING...4 PERCENT.
* CWR...................ZERO.
TONIGHT
* SKY/WEATHER...........MOSTLY CLOUDY.
* MIN TEMPERATURE.......56-61.
* 24 HR TREND.........2 DEGREES WARMER.
* MAX HUMIDITY..........75-80 PERCENT.
* 24 HR TREND.........5 PERCENT WETTER.
* WIND (20 FT)
* PLAINS...............NORTHEAST WINDS 5 TO 15 MPH.
* CHANCE OF LIGHTNING...12 PERCENT.
* CWR...................ZERO.
WEDNESDAY
* SKY/WEATHER...........MOSTLY SUNNY.
* MAX TEMPERATURE.......84-89.
* 24 HR TREND.........3 DEGREES WARMER.
* MIN HUMIDITY..........32-37 PERCENT.
* 24 HR TREND.........2 PERCENT WETTER.
* WIND (20 FT)
* PLAINS...............SOUTHEAST WINDS 5 TO 10 MPH.
* CHANCE OF LIGHTNING...13 PERCENT.
* CWR...................ZERO.
FORECAST DAYS 3 THROUGH 7...
WEDNESDAY NIGHT
MOSTLY CLOUDY. SCATTERED SHOWERS AND
THUNDERSTORMS. LOWS 58 TO 63. NORTHWEST WINDS 5 TO 10 MPH.
THURSDAY
PARTLY CLOUDY. SCATTERED SHOWERS AND THUNDERSTORMS.
LOWS 57 TO 62. HIGHS 86 TO 91. SOUTHWEST WINDS 5 TO 10 MPH.
FRIDAY
MOSTLY CLEAR. LOWS 60 TO 65. HIGHS 95 TO 100. WEST
WINDS 10 TO 20 MPH WITH GUSTS TO AROUND 35 MPH.
SATURDAY
MOSTLY CLEAR. ISOLATED SHOWERS. LOWS 60 TO 65. HIGHS
95 TO 100. WEST WINDS 5 TO 15 MPH WITH GUSTS TO AROUND 30 MPH.
SUNDAY
MOSTLY CLEAR. ISOLATED SHOWERS AND THUNDERSTORMS. LOWS
58 TO 63. HIGHS 93 TO 98.
MONDAY
SUNNY. HIGHS 91 TO 96.
MTZ125-212215-
STILLWATER COUNTY-
119 AM MDT TUE JUL 21 2026
TODAY
* SKY/WEATHER...........MOSTLY SUNNY. ISOLATED SHOWERS AND
THUNDERSTORMS IN THE AFTERNOON.
* MAX TEMPERATURE.......84-89.
* 24 HR TREND.........5 DEGREES COOLER.
* MIN HUMIDITY..........29-34 PERCENT.
* 24 HR TREND.........17 PERCENT WETTER.
* WIND (20 FT)
* PLAINS...............NORTHEAST WINDS 5 TO 10 MPH.
* CHANCE OF LIGHTNING...19 PERCENT.
* CWR...................ZERO.
TONIGHT
* SKY/WEATHER...........MOSTLY CLOUDY. ISOLATED SHOWERS AND
THUNDERSTORMS IN THE EVENING.
* MIN TEMPERATURE.......59-64.
* 24 HR TREND.........1 DEGREE WARMER.
* MAX HUMIDITY..........66-71 PERCENT.
* 24 HR TREND.........9 PERCENT WETTER.
* WIND (20 FT)
* PLAINS...............SOUTHEAST WINDS 5 TO 10 MPH IN THE EVENING
BECOMING LIGHT OVERNIGHT.
* CHANCE OF LIGHTNING...20 PERCENT.
* CWR...................ZERO.
WEDNESDAY
* SKY/WEATHER...........MOSTLY SUNNY. SCATTERED SHOWERS AND
THUNDERSTORMS IN THE AFTERNOON.
* MAX TEMPERATURE.......87-92.
* 24 HR TREND.........3 DEGREES WARMER.
* MIN HUMIDITY..........30-35 PERCENT.
* 24 HR TREND.........1 PERCENT WETTER.
* WIND (20 FT)
* PLAINS...............LIGHT WINDS IN THE MORNING BECOMING EAST 5
TO 10 MPH IN THE AFTERNOON.
* CHANCE OF LIGHTNING...36 PERCENT.
* CWR...................LESS THAN 10 PERCENT.
FORECAST DAYS 3 THROUGH 7...
WEDNESDAY NIGHT
MOSTLY CLOUDY. NUMEROUS SHOWERS AND SCATTERED
THUNDERSTORMS. LOWS 61 TO 66. SOUTHWEST WINDS 5 TO 10 MPH.
THURSDAY
MOSTLY CLOUDY. NUMEROUS SHOWERS AND SCATTERED
THUNDERSTORMS. LOWS 60 TO 65. HIGHS 87 TO 92. SOUTH WINDS 5 TO
10 MPH.
FRIDAY
MOSTLY CLEAR. LOWS 64 TO 69. HIGHS 97 TO 102. SOUTHWEST
WINDS 5 TO 10 MPH.
SATURDAY
PARTLY CLOUDY. ISOLATED SHOWERS AND THUNDERSTORMS.
LOWS 64 TO 69. HIGHS 97 TO 102. SOUTH WINDS 5 TO 10 MPH.
SUNDAY
PARTLY CLOUDY. ISOLATED SHOWERS AND THUNDERSTORMS. LOWS
61 TO 66. HIGHS 94 TO 99.
MONDAY
MOSTLY SUNNY. ISOLATED SHOWERS AND THUNDERSTORMS. HIGHS
92 TO 97.
MTZ126-212215-
BEARTOOTH RANGER DISTRICT CUSTER NATIONAL FOREST-
119 AM MDT TUE JUL 21 2026
TODAY
* SKY/WEATHER...........MOSTLY SUNNY. SCATTERED SHOWERS AND
THUNDERSTORMS IN THE AFTERNOON.
* MAX TEMPERATURE.......81-89 AT 5000 FEET...70-80 AT 7000 FEET.
* 24 HR TREND.........7 DEGREES COOLER.
* MIN HUMIDITY..........28-38 PERCENT AT 5000 FEET...37-47 PERCENT
AT 7000 FEET.
* 24 HR TREND.........21 PERCENT WETTER.
* WIND (20 FT)
* SLOPE/VALLEY.........NORTH WINDS 5 TO 10 MPH.
* RIDGETOP.............SOUTHWEST 5 TO 10 MPH.
* CHANCE OF LIGHTNING...33 PERCENT.
* CWR...................ZERO.
TONIGHT
* SKY/WEATHER...........MOSTLY CLOUDY. SCATTERED SHOWERS AND
THUNDERSTORMS IN THE EVENING, THEN ISOLATED RAIN SHOWERS
OVERNIGHT.
* MIN TEMPERATURE.......59-68 AT 5000 FEET...52-62 AT 7000 FEET.
* 24 HR TREND.........3 DEGREES WARMER.
* MAX HUMIDITY..........56-66 PERCENT AT 5000 FEET...62-72 PERCENT
AT 7000 FEET.
* 24 HR TREND.........10 PERCENT WETTER.
* WIND (20 FT)
* SLOPE/VALLEY.........NORTHWEST WINDS 5 TO 10 MPH.
* RIDGETOP.............LIGHT WINDS.
* CHANCE OF LIGHTNING...30 PERCENT.
* CWR...................ZERO.
WEDNESDAY
* SKY/WEATHER...........MOSTLY SUNNY WITH ISOLATED RAIN SHOWERS IN
THE MORNING, THEN MOSTLY CLOUDY WITH NUMEROUS RAIN SHOWERS AND
SCATTERED THUNDERSTORMS IN THE AFTERNOON.
* MAX TEMPERATURE.......82-89 AT 5000 FEET...70-80 AT 7000 FEET.
* 24 HR TREND.........1 DEGREE WARMER.
* MIN HUMIDITY..........33-43 PERCENT AT 5000 FEET...45-55 PERCENT
AT 7000 FEET.
* 24 HR TREND.........5 PERCENT WETTER.
* WIND (20 FT)
* SLOPE/VALLEY.........NORTHWEST WINDS 5 TO 10 MPH.
* RIDGETOP.............LIGHT WINDS.
* CHANCE OF LIGHTNING...48 PERCENT.
* CWR...................50 PERCENT.
FORECAST DAYS 3 THROUGH 7...
WEDNESDAY NIGHT
CLOUDY. SHOWERS AND SCATTERED THUNDERSTORMS.
LOWS 61 TO 69. SOUTHWEST WINDS 5 TO 10 MPH.
THURSDAY
MOSTLY CLOUDY. SHOWERS AND SCATTERED THUNDERSTORMS.
LOWS 61 TO 69. HIGHS 78 TO 88. WEST WINDS 5 TO 15 MPH.
FRIDAY
PARTLY CLOUDY. LOWS 64 TO 74. HIGHS 88 TO 98. WEST
WINDS 10 TO 20 MPH.
SATURDAY
PARTLY CLOUDY. SCATTERED SHOWERS AND THUNDERSTORMS.
LOWS 64 TO 74. HIGHS 90 TO 98. SOUTHWEST WINDS 5 TO 15 MPH.
SUNDAY
PARTLY CLOUDY. SCATTERED SHOWERS AND ISOLATED
THUNDERSTORMS. LOWS 62 TO 71. HIGHS 88 TO 96.
MONDAY
MOSTLY SUNNY. SCATTERED SHOWERS AND THUNDERSTORMS.
HIGHS 86 TO 94.
MTZ127-212215-
GOLDEN VALLEY COUNTY/MUSSELSHELL COUNTY-
119 AM MDT TUE JUL 21 2026
TODAY
* SKY/WEATHER...........MOSTLY SUNNY.
* MAX TEMPERATURE.......79-84.
* 24 HR TREND.........2 DEGREES COOLER.
* MIN HUMIDITY..........36-41 PERCENT.
* 24 HR TREND.........8 PERCENT WETTER.
* WIND (20 FT)
* PLAINS...............EAST WINDS 5 TO 15 MPH.
* CHANCE OF LIGHTNING...2 PERCENT.
* CWR...................ZERO.
TONIGHT
* SKY/WEATHER...........MOSTLY CLOUDY.
* MIN TEMPERATURE.......62-67.
* 24 HR TREND.........UNCHANGED.
* MAX HUMIDITY..........56-61 PERCENT.
* 24 HR TREND.........2 PERCENT WETTER.
* WIND (20 FT)
* PLAINS...............EAST WINDS 5 TO 15 MPH.
* CHANCE OF LIGHTNING...11 PERCENT.
* CWR...................ZERO.
WEDNESDAY
* SKY/WEATHER...........MOSTLY SUNNY.
* MAX TEMPERATURE.......83-88.
* 24 HR TREND.........4 DEGREES WARMER.
* MIN HUMIDITY..........35-40 PERCENT.
* 24 HR TREND.........1 PERCENT DRIER.
* WIND (20 FT)
* PLAINS...............EAST WINDS 5 TO 10 MPH.
* CHANCE OF LIGHTNING...1 PERCENT.
* CWR...................ZERO.
FORECAST DAYS 3 THROUGH 7...
WEDNESDAY NIGHT
MOSTLY CLOUDY. ISOLATED SHOWERS AND
THUNDERSTORMS. LOWS 65 TO 70. EAST WINDS 5 TO 10 MPH.
THURSDAY
PARTLY CLOUDY. SCATTERED SHOWERS. LOWS 64 TO 69.
HIGHS 83 TO 88. SOUTHWEST WINDS 5 TO 10 MPH.
FRIDAY
WARMER. MOSTLY CLEAR. ISOLATED SHOWERS AND
THUNDERSTORMS. LOWS 68 TO 73. HIGHS 94 TO 99. WEST WINDS 5 TO
15 MPH WITH GUSTS TO AROUND 30 MPH.
SATURDAY
PARTLY CLOUDY. ISOLATED SHOWERS AND THUNDERSTORMS.
LOWS 69 TO 74. HIGHS 93 TO 98. SOUTHWEST WINDS 5 TO 15 MPH.
SUNDAY
PARTLY CLOUDY. ISOLATED SHOWERS. LOWS 67 TO 72. HIGHS
91 TO 96.
MONDAY
SUNNY. HIGHS 88 TO 93.
MTZ128-212215-
YELLOWSTONE COUNTY-
119 AM MDT TUE JUL 21 2026
TODAY
* SKY/WEATHER...........MOSTLY SUNNY.
* MAX TEMPERATURE.......87-92.
* 24 HR TREND.........2 DEGREES COOLER.
* MIN HUMIDITY..........28-33 PERCENT.
* 24 HR TREND.........8 PERCENT WETTER.
* WIND (20 FT)
* PLAINS...............NORTHEAST WINDS 10 TO 20 MPH.
* CHANCE OF LIGHTNING...4 PERCENT.
* CWR...................ZERO.
TONIGHT
* SKY/WEATHER...........MOSTLY CLOUDY. ISOLATED SHOWERS AND
THUNDERSTORMS IN THE EVENING, THEN ISOLATED RAIN SHOWERS
OVERNIGHT.
* MIN TEMPERATURE.......64-69.
* 24 HR TREND.........UNCHANGED.
* MAX HUMIDITY..........58-63 PERCENT.
* 24 HR TREND.........6 PERCENT WETTER.
* WIND (20 FT)
* PLAINS...............NORTHEAST WINDS 10 TO 20 MPH.
* CHANCE OF LIGHTNING...15 PERCENT.
* CWR...................ZERO.
WEDNESDAY
* SKY/WEATHER...........MOSTLY SUNNY.
* MAX TEMPERATURE.......90-95.
* 24 HR TREND.........3 DEGREES WARMER.
* MIN HUMIDITY..........28-33 PERCENT.
* 24 HR TREND.........UNCHANGED.
* WIND (20 FT)
* PLAINS...............NORTHEAST WINDS 5 TO 15 MPH.
* CHANCE OF LIGHTNING...2 PERCENT.
* CWR...................ZERO.
FORECAST DAYS 3 THROUGH 7...
WEDNESDAY NIGHT
MOSTLY CLOUDY. SCATTERED SHOWERS AND ISOLATED
THUNDERSTORMS. LOWS 66 TO 71. EAST WINDS 5 TO 15 MPH.
THURSDAY
PARTLY CLOUDY. SCATTERED SHOWERS. LOWS 65 TO 70.
HIGHS 88 TO 93. SOUTHWEST WINDS 5 TO 10 MPH.
FRIDAY
WARMER. MOSTLY CLEAR. ISOLATED SHOWERS. LOWS 68 TO 73.
HIGHS 100 TO 105. WEST WINDS 5 TO 15 MPH.
SATURDAY
PARTLY CLOUDY. ISOLATED SHOWERS AND THUNDERSTORMS.
LOWS 68 TO 73. HIGHS 100 TO 105. SOUTHWEST WINDS 5 TO 15 MPH.
SUNDAY
PARTLY CLOUDY. ISOLATED SHOWERS. LOWS 66 TO 71. HIGHS
97 TO 102.
MONDAY
SUNNY. HIGHS 95 TO 100.
MTZ129-212215-
CROW INDIAN RESERVATION/BIGHORN CANYON REC AREA-
119 AM MDT TUE JUL 21 2026
TODAY
* SKY/WEATHER...........SUNNY.
* MAX TEMPERATURE.......79-89 AT 5000 FEET...72-80 AT 7000 FEET.
* 24 HR TREND.........5 DEGREES COOLER.
* MIN HUMIDITY..........25-35 PERCENT AT 5000 FEET...36-46 PERCENT
AT 7000 FEET.
* 24 HR TREND.........13 PERCENT WETTER.
* WIND (20 FT)
* SLOPE/VALLEY.........EAST WINDS 5 TO 15 MPH.
* RIDGETOP.............SOUTH 5 TO 10 MPH.
* CHANCE OF LIGHTNING...2 PERCENT.
* CWR...................ZERO.
TONIGHT
* SKY/WEATHER...........MOSTLY CLOUDY. SCATTERED RAIN SHOWERS AND
ISOLATED THUNDERSTORMS IN THE EVENING, THEN SCATTERED RAIN
SHOWERS OVERNIGHT.
* MIN TEMPERATURE.......61-67 AT 5000 FEET...59-64 AT 7000 FEET.
* 24 HR TREND.........2 DEGREES WARMER.
* MAX HUMIDITY..........58-68 PERCENT AT 5000 FEET...55-63 PERCENT
AT 7000 FEET.
* 24 HR TREND.........12 PERCENT WETTER.
* WIND (20 FT)
* SLOPE/VALLEY.........EAST WINDS 5 TO 15 MPH.
* RIDGETOP.............SOUTH 5 TO 15 MPH.
* CHANCE OF LIGHTNING...22 PERCENT.
* CWR...................ZERO.
WEDNESDAY
* SKY/WEATHER...........MOSTLY SUNNY.
* MAX TEMPERATURE.......79-89 AT 5000 FEET...72-80 AT 7000 FEET.
* 24 HR TREND.........1 DEGREE WARMER.
* MIN HUMIDITY..........33-43 PERCENT AT 5000 FEET...47-57 PERCENT
AT 7000 FEET.
* 24 HR TREND.........7 PERCENT WETTER.
* WIND (20 FT)
* SLOPE/VALLEY.........EAST WINDS 5 TO 10 MPH.
* RIDGETOP.............EAST 5 TO 10 MPH.
* CHANCE OF LIGHTNING...8 PERCENT.
* CWR...................ZERO.
FORECAST DAYS 3 THROUGH 7...
WEDNESDAY NIGHT
MOSTLY CLOUDY. NUMEROUS SHOWERS AND SCATTERED
THUNDERSTORMS. LOWS 63 TO 68. SOUTHEAST WINDS 5 TO 10 MPH.
THURSDAY
PARTLY CLOUDY. NUMEROUS SHOWERS AND SCATTERED
THUNDERSTORMS. LOWS 62 TO 69. HIGHS 77 TO 87. SOUTHWEST WINDS
5 TO 10 MPH.
FRIDAY
WARMER. MOSTLY CLEAR. LOWS 67 TO 74. HIGHS 88 TO 98.
SOUTHWEST WINDS 5 TO 15 MPH.
SATURDAY
PARTLY CLOUDY. ISOLATED SHOWERS AND THUNDERSTORMS.
LOWS 67 TO 73. HIGHS 89 TO 99. SOUTH WINDS 5 TO 10 MPH.
SUNDAY
PARTLY CLOUDY. ISOLATED SHOWERS AND THUNDERSTORMS. LOWS
65 TO 70. HIGHS 87 TO 97.
MONDAY
SUNNY. HIGHS 85 TO 95.
MTZ130-212215-
NORTHERN ROSEBUD/NORTHERN TREASURE COUNTIES-
119 AM MDT TUE JUL 21 2026
TODAY
* SKY/WEATHER...........PARTLY SUNNY.
* MAX TEMPERATURE.......85-90.
* 24 HR TREND.........7 DEGREES COOLER.
* MIN HUMIDITY..........30-35 PERCENT.
* 24 HR TREND.........15 PERCENT WETTER.
* WIND (20 FT)
* PLAINS...............EAST WINDS 5 TO 15 MPH.
* CHANCE OF LIGHTNING...2 PERCENT.
* CWR...................ZERO.
TONIGHT
* SKY/WEATHER...........MOSTLY CLOUDY WITH ISOLATED RAIN SHOWERS.
* MIN TEMPERATURE.......62-67.
* 24 HR TREND.........1 DEGREE WARMER.
* MAX HUMIDITY..........60-65 PERCENT.
* 24 HR TREND.........6 PERCENT DRIER.
* WIND (20 FT)
* PLAINS...............EAST WINDS 5 TO 15 MPH.
* CHANCE OF LIGHTNING...7 PERCENT.
* CWR...................ZERO.
WEDNESDAY
* SKY/WEATHER...........SUNNY IN THE MORNING THEN BECOMING PARTLY
SUNNY.
* MAX TEMPERATURE.......90-95.
* 24 HR TREND.........5 DEGREES WARMER.
* MIN HUMIDITY..........25-30 PERCENT.
* 24 HR TREND.........5 PERCENT DRIER.
* WIND (20 FT)
* PLAINS...............EAST WINDS 5 TO 15 MPH.
* CHANCE OF LIGHTNING...1 PERCENT.
* CWR...................ZERO.
FORECAST DAYS 3 THROUGH 7...
WEDNESDAY NIGHT
MOSTLY CLOUDY. ISOLATED SHOWERS. LOWS 65 TO
70. EAST WINDS 5 TO 10 MPH.
THURSDAY
PARTLY CLOUDY. ISOLATED SHOWERS. LOWS 63 TO 68. HIGHS
89 TO 94. SOUTH WINDS 5 TO 10 MPH.
FRIDAY
WARMER. MOSTLY CLEAR. LOWS 68 TO 73. HIGHS 102 TO 107.
WEST WINDS 5 TO 10 MPH.
SATURDAY
MOSTLY CLEAR. ISOLATED SHOWERS. LOWS 69 TO 74. HIGHS
103 TO 108. WEST WINDS 5 TO 10 MPH.
SUNDAY
PARTLY CLOUDY. LOWS 67 TO 72. HIGHS 100 TO 105.
MONDAY
SUNNY. HIGHS 98 TO 103.
MTZ131-212215-
NORTHERN CHEYENNE INDIAN RESERVATION/ASHLAND RANGER DISTRICT
CUSTER NATL FOREST-
119 AM MDT TUE JUL 21 2026
TODAY
* SKY/WEATHER...........SUNNY.
* MAX TEMPERATURE.......87-92.
* 24 HR TREND.........6 DEGREES COOLER.
* MIN HUMIDITY..........25-30 PERCENT.
* 24 HR TREND.........13 PERCENT WETTER.
* WIND (20 FT)
* SLOPE/VALLEY.........EAST WINDS 5 TO 15 MPH.
* RIDGETOP.............SOUTH 5 TO 15 MPH.
* CHANCE OF LIGHTNING...2 PERCENT.
* CWR...................ZERO.
TONIGHT
* SKY/WEATHER...........MOSTLY CLOUDY. SCATTERED RAIN SHOWERS AND
ISOLATED THUNDERSTORMS IN THE EVENING, THEN SCATTERED RAIN
SHOWERS OVERNIGHT.
* MIN TEMPERATURE.......62-67.
* 24 HR TREND.........2 DEGREES WARMER.
* MAX HUMIDITY..........69-74 PERCENT.
* 24 HR TREND.........9 PERCENT WETTER.
* WIND (20 FT)
* SLOPE/VALLEY.........EAST WINDS 5 TO 15 MPH.
* RIDGETOP.............SOUTH 10 TO 20 MPH.
* CHANCE OF LIGHTNING...18 PERCENT.
* CWR...................ZERO.
WEDNESDAY
* SKY/WEATHER...........MOSTLY SUNNY.
* MAX TEMPERATURE.......89-94.
* 24 HR TREND.........2 DEGREES WARMER.
* MIN HUMIDITY..........29-34 PERCENT.
* 24 HR TREND.........4 PERCENT WETTER.
* WIND (20 FT)
* SLOPE/VALLEY.........EAST WINDS 5 TO 10 MPH.
* RIDGETOP.............EAST 5 TO 10 MPH.
* CHANCE OF LIGHTNING...9 PERCENT.
* CWR...................ZERO.
FORECAST DAYS 3 THROUGH 7...
WEDNESDAY NIGHT
MOSTLY CLOUDY. NUMEROUS SHOWERS AND SCATTERED
THUNDERSTORMS. LOWS 63 TO 68. SOUTHEAST WINDS 5 TO 10 MPH.
THURSDAY
PARTLY CLOUDY. NUMEROUS SHOWERS AND SCATTERED
THUNDERSTORMS. LOWS 60 TO 65. HIGHS 84 TO 89. SOUTH WINDS 5 TO
10 MPH.
FRIDAY
WARMER. MOSTLY CLEAR. LOWS 66 TO 71. HIGHS 98 TO 103.
WEST WINDS 5 TO 10 MPH.
SATURDAY
PARTLY CLOUDY. ISOLATED SHOWERS AND THUNDERSTORMS.
LOWS 67 TO 72. HIGHS 100 TO 105. SOUTHEAST WINDS 5 TO 10 MPH.
SUNDAY
PARTLY CLOUDY. ISOLATED SHOWERS AND THUNDERSTORMS. LOWS
65 TO 70. HIGHS 97 TO 102.
MONDAY
SUNNY. HIGHS 95 TO 100.
MTZ132-212215-
CUSTER COUNTY-
119 AM MDT TUE JUL 21 2026
TODAY
* SKY/WEATHER...........PARTLY SUNNY. ISOLATED RAIN SHOWERS IN THE
MORNING.
* MAX TEMPERATURE.......79-84.
* 24 HR TREND.........9 DEGREES COOLER.
* MIN HUMIDITY..........33-38 PERCENT.
* 24 HR TREND.........15 PERCENT WETTER.
* WIND (20 FT)
* PLAINS...............NORTHEAST WINDS 5 TO 10 MPH.
* CHANCE OF LIGHTNING...3 PERCENT.
* CWR...................ZERO.
TONIGHT
* SKY/WEATHER...........MOSTLY CLOUDY. ISOLATED RAIN SHOWERS
OVERNIGHT.
* MIN TEMPERATURE.......60-65.
* 24 HR TREND.........2 DEGREES WARMER.
* MAX HUMIDITY..........62-67 PERCENT.
* 24 HR TREND.........16 PERCENT DRIER.
* WIND (20 FT)
* PLAINS...............EAST WINDS 5 TO 15 MPH.
* CHANCE OF LIGHTNING...6 PERCENT.
* CWR...................ZERO.
WEDNESDAY
* SKY/WEATHER...........MOSTLY SUNNY.
* MAX TEMPERATURE.......86-91.
* 24 HR TREND.........7 DEGREES WARMER.
* MIN HUMIDITY..........28-33 PERCENT.
* 24 HR TREND.........5 PERCENT DRIER.
* WIND (20 FT)
* PLAINS...............SOUTHEAST WINDS 5 TO 15 MPH.
* CHANCE OF LIGHTNING...0 PERCENT.
* CWR...................ZERO.
FORECAST DAYS 3 THROUGH 7...
WEDNESDAY NIGHT
MOSTLY CLOUDY. LOWS 62 TO 67. SOUTHEAST WINDS
5 TO 15 MPH.
THURSDAY
PARTLY CLOUDY. ISOLATED SHOWERS. LOWS 62 TO 67. HIGHS
86 TO 91. SOUTH WINDS 5 TO 10 MPH.
FRIDAY
WARMER. MOSTLY CLEAR. LOWS 67 TO 72. HIGHS 98 TO 103.
SOUTHWEST WINDS 5 TO 15 MPH.
SATURDAY
MOSTLY CLEAR. ISOLATED SHOWERS AND THUNDERSTORMS.
LOWS 68 TO 73. HIGHS 100 TO 105. WEST WINDS 5 TO 10 MPH.
SUNDAY
PARTLY CLOUDY. ISOLATED SHOWERS. LOWS 66 TO 71. HIGHS
98 TO 103.
MONDAY
MOSTLY SUNNY. HIGHS 96 TO 101.
MTZ133-212215-
SIOUX RANGER DISTRICT CUSTER NATIONAL FOREST-
119 AM MDT TUE JUL 21 2026
TODAY
* SKY/WEATHER...........MOSTLY SUNNY.
* MAX TEMPERATURE.......81-86.
* 24 HR TREND.........8 DEGREES COOLER.
* MIN HUMIDITY..........37-42 PERCENT.
* 24 HR TREND.........21 PERCENT WETTER.
* WIND (20 FT)
* PLAINS...............NORTHEAST WINDS 5 TO 10 MPH.
* CHANCE OF LIGHTNING...2 PERCENT.
* CWR...................ZERO.
TONIGHT
* SKY/WEATHER...........MOSTLY CLOUDY. SCATTERED RAIN SHOWERS
OVERNIGHT.
* MIN TEMPERATURE.......59-64.
* 24 HR TREND.........2 DEGREES WARMER.
* MAX HUMIDITY..........70-75 PERCENT.
* 24 HR TREND.........5 PERCENT DRIER.
* WIND (20 FT)
* PLAINS...............EAST WINDS 5 TO 15 MPH.
* CHANCE OF LIGHTNING...14 PERCENT.
* CWR...................20 PERCENT.
WEDNESDAY
* SKY/WEATHER...........PARTLY SUNNY IN THE MORNING THEN CLEARING.
* MAX TEMPERATURE.......83-88.
* 24 HR TREND.........2 DEGREES WARMER.
* MIN HUMIDITY..........41-46 PERCENT.
* 24 HR TREND.........4 PERCENT WETTER.
* WIND (20 FT)
* PLAINS...............SOUTHEAST WINDS 10 TO 20 MPH.
* CHANCE OF LIGHTNING...2 PERCENT.
* CWR...................ZERO.
FORECAST DAYS 3 THROUGH 7...
WEDNESDAY NIGHT
MOSTLY CLOUDY. SCATTERED SHOWERS. LOWS 59 TO
64. SOUTHEAST WINDS 5 TO 15 MPH.
THURSDAY
MOSTLY CLOUDY. SCATTERED SHOWERS. LOWS 58 TO 63.
HIGHS 83 TO 88. SOUTH WINDS 5 TO 10 MPH.
FRIDAY
WARMER. MOSTLY CLEAR. LOWS 65 TO 70. HIGHS 96 TO 101.
SOUTHWEST WINDS 5 TO 15 MPH.
SATURDAY
PARTLY CLOUDY. ISOLATED SHOWERS AND THUNDERSTORMS.
LOWS 67 TO 72. HIGHS 100 TO 105. WEST WINDS 5 TO 15 MPH.
SUNDAY
PARTLY CLOUDY. ISOLATED SHOWERS AND THUNDERSTORMS. LOWS
65 TO 70. HIGHS 98 TO 103.
MONDAY
MOSTLY SUNNY. HIGHS 96 TO 101.
WYZ274-212215-
SHERIDAN COUNTY-
119 AM MDT TUE JUL 21 2026
TODAY
* SKY/WEATHER...........MOSTLY SUNNY.
* MAX TEMPERATURE.......89-94.
* 24 HR TREND.........2 DEGREES COOLER.
* MIN HUMIDITY..........26-31 PERCENT.
* 24 HR TREND.........11 PERCENT WETTER.
* WIND (20 FT)
* SLOPE/VALLEY.........EAST WINDS 5 TO 10 MPH.
* RIDGETOP.............SOUTHWEST 5 TO 10 MPH.
* CHANCE OF LIGHTNING...6 PERCENT.
* CWR...................ZERO.
TONIGHT
* SKY/WEATHER...........MOSTLY CLOUDY. SCATTERED SHOWERS AND
THUNDERSTORMS IN THE EVENING, THEN ISOLATED SHOWERS AND
THUNDERSTORMS OVERNIGHT.
* MIN TEMPERATURE.......59-64.
* 24 HR TREND.........3 DEGREES WARMER.
* MAX HUMIDITY..........81-86 PERCENT.
* 24 HR TREND.........16 PERCENT WETTER.
* WIND (20 FT)
* SLOPE/VALLEY.........NORTHEAST WINDS 5 TO 10 MPH IN THE EVENING
BECOMING LIGHT OVERNIGHT.
* RIDGETOP.............SOUTH 5 TO 10 MPH.
* CHANCE OF LIGHTNING...25 PERCENT.
* CWR...................ZERO.
WEDNESDAY
* SKY/WEATHER...........PARTLY SUNNY. SCATTERED SHOWERS AND
THUNDERSTORMS IN THE AFTERNOON.
* MAX TEMPERATURE.......88-93.
* 24 HR TREND.........1 DEGREE COOLER.
* MIN HUMIDITY..........36-41 PERCENT.
* 24 HR TREND.........10 PERCENT WETTER.
* WIND (20 FT)
* SLOPE/VALLEY.........LIGHT WINDS IN THE MORNING BECOMING EAST 5
TO 10 MPH IN THE AFTERNOON.
* RIDGETOP.............LIGHT WINDS.
* CHANCE OF LIGHTNING...34 PERCENT.
* CWR...................LESS THAN 10 PERCENT.
FORECAST DAYS 3 THROUGH 7...
WEDNESDAY NIGHT
CLOUDY. NUMEROUS SHOWERS AND SCATTERED
THUNDERSTORMS. LOWS 60 TO 65. SOUTH WINDS 5 TO 10 MPH.
THURSDAY
MOSTLY CLOUDY. SHOWERS AND SCATTERED THUNDERSTORMS.
LOWS 57 TO 62. HIGHS 83 TO 88. LIGHT WINDS.
FRIDAY
WARMER. MOSTLY CLEAR. LOWS 62 TO 67. HIGHS 95 TO 100.
WEST WINDS 5 TO 10 MPH.
SATURDAY
PARTLY CLOUDY. ISOLATED SHOWERS AND THUNDERSTORMS.
LOWS 63 TO 68. HIGHS 96 TO 101. WEST WINDS 5 TO 10 MPH.
SUNDAY
PARTLY CLOUDY. ISOLATED SHOWERS AND THUNDERSTORMS. LOWS
61 TO 66. HIGHS 94 TO 99.
MONDAY
SUNNY. ISOLATED SHOWERS AND THUNDERSTORMS. HIGHS 92 TO
97.
WYZ284-212215-
BIGHORN NATIONAL FOREST-
119 AM MDT TUE JUL 21 2026
TODAY
* SKY/WEATHER...........MOSTLY SUNNY. ISOLATED SHOWERS AND
THUNDERSTORMS IN THE AFTERNOON.
* MAX TEMPERATURE.......72-77.
* 24 HR TREND.........2 DEGREES COOLER.
* MIN HUMIDITY..........39-44 PERCENT.
* 24 HR TREND.........9 PERCENT WETTER.
* WIND (20 FT)
* AT BURGESS JCT.......SOUTH WINDS 5 TO 10 MPH IN THE MORNING
SHIFTING TO THE EAST 5 TO 15 MPH IN THE AFTERNOON.
* CHANCE OF LIGHTNING...18 PERCENT.
* CWR...................ZERO.
TONIGHT
* SKY/WEATHER...........MOSTLY CLOUDY. SCATTERED SHOWERS AND
THUNDERSTORMS IN THE EVENING, THEN ISOLATED RAIN SHOWERS
OVERNIGHT.
* MIN TEMPERATURE.......47-52.
* 24 HR TREND.........2 DEGREES WARMER.
* MAX HUMIDITY..........92-97 PERCENT.
* 24 HR TREND.........15 PERCENT WETTER.
* WIND (20 FT)
* AT BURGESS JCT.......EAST WINDS 5 TO 15 MPH IN THE EVENING
SHIFTING TO THE SOUTH 5 TO 10 MPH OVERNIGHT.
* CHANCE OF LIGHTNING...32 PERCENT.
* CWR...................ZERO.
WEDNESDAY
* SKY/WEATHER...........PARTLY SUNNY. NUMEROUS RAIN SHOWERS AND
SCATTERED THUNDERSTORMS IN THE AFTERNOON.
* MAX TEMPERATURE.......70-75.
* 24 HR TREND.........2 DEGREES COOLER.
* MIN HUMIDITY..........55-60 PERCENT.
* 24 HR TREND.........16 PERCENT WETTER.
* WIND (20 FT)
* AT BURGESS JCT.......NORTHWEST WINDS 5 TO 10 MPH IN THE MORNING
SHIFTING TO THE NORTHEAST 5 TO 15 MPH IN THE AFTERNOON.
* CHANCE OF LIGHTNING...40 PERCENT.
* CWR...................40 PERCENT.
FORECAST DAYS 3 THROUGH 7...
WEDNESDAY NIGHT
CLOUDY. NUMEROUS SHOWERS AND SCATTERED
THUNDERSTORMS. LOWS 47 TO 52. SOUTHWEST WINDS 5 TO 10 MPH.
THURSDAY
MOSTLY CLOUDY. SHOWERS AND SCATTERED THUNDERSTORMS.
LOWS 46 TO 51. HIGHS 67 TO 72. WEST WINDS 5 TO 10 MPH.
FRIDAY
MOSTLY CLEAR. LOWS 52 TO 57. HIGHS 77 TO 82. SOUTHWEST
WINDS 5 TO 15 MPH WITH GUSTS TO AROUND 30 MPH.
SATURDAY
PARTLY CLOUDY. ISOLATED SHOWERS AND THUNDERSTORMS.
LOWS 52 TO 57. HIGHS 80 TO 85. SOUTHWEST WINDS 5 TO 15 MPH.
SUNDAY
PARTLY CLOUDY. SCATTERED SHOWERS AND ISOLATED
THUNDERSTORMS. LOWS 50 TO 55. HIGHS 77 TO 82.
MONDAY
MOSTLY SUNNY. SCATTERED SHOWERS AND ISOLATED
THUNDERSTORMS. HIGHS 76 TO 81.
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