385
FNUS55 KBYZ 270717
FWFBYZ
FIRE WEATHER PLANNING FORECAST FOR SCEN AND SERN MONTANA
NATIONAL WEATHER SERVICE BILLINGS MT
117 AM MDT SAT JUN 27 2026
DISCUSSION
A STRONG STORM SYSTEM WILL BE IN THE AREA THROUGH MONDAY BRINGING
UNSETTLED CONDITIONS THROUGH MONDAY, AND GOOD CHANCES FOR WETTING
RAIN TODAY. BY TUESDAY CONDITIONS WILL BECOME DRIER, BUT WILL
STILL SEE LOW CHANCES FOR AFTERNOON AND EVENING SHOWERS AND
THUNDERSTORMS FOR THE REST OF THE WEEK. TODAY WILL BE THE WETTEST
DAY OF THE FORECAST (30-80% WETTING RAIN CHANCES) AND ALSO
INCLUDES THE POTENTIAL FOR STRONG TO SEVERE THUNDERSTORMS,
ESPECIALLY FOR AREAS EAST OF BILLINGS. GUSTY WESTERLY WINDS
SPREAD OVER THE AREA SUNDAY AND MONDAY WITH GUSTS IN THE 30 TO 45
MPH RANGE BECOMING COMMON, STRONGEST OVER FROM BILLINGS WEST.
TEMPERATURES WILL TREND COOLER OVER THE NEXT FEW DAYS WITH
ELEVATED AFTERNOON RH VALUES. A WARMING TREND WITH LOWER AFTERNOON
RH VALUES KICKS IN TUESDAY, WITH TEMPERATURES TRENDING WELL INTO
THE 80S BY THE END OF THE WEEK. CHAMBERS
MTZ123-272215-
GALLATIN NATIONAL FOREST-
117 AM MDT SAT JUN 27 2026
TODAY
* SKY/WEATHER...........MOSTLY CLOUDY. NUMEROUS RAIN SHOWERS AND
ISOLATED THUNDERSTORMS IN THE MORNING, THEN RAIN SHOWERS AND
SCATTERED THUNDERSTORMS IN THE AFTERNOON.
* MAX TEMPERATURE.......60-70 AT 5000 FEET...50-60 AT 7000 FEET.
* 24 HR TREND.........16 DEGREES COOLER.
* MIN HUMIDITY..........54-64 PERCENT AT 5000 FEET...68-78 PERCENT
AT 7000 FEET.
* 24 HR TREND.........34 PERCENT WETTER.
* WIND (20 FT)
* SLOPE/VALLEY.........SOUTHWEST WINDS 5 TO 10 MPH.
* RIDGETOP.............SOUTH 15 TO 25 MPH.
* CHANCE OF LIGHTNING...53 PERCENT.
* CWR...................80 PERCENT.
TONIGHT
* SKY/WEATHER...........MOSTLY CLOUDY. RAIN SHOWERS AND SCATTERED
THUNDERSTORMS IN THE EVENING, THEN RAIN SHOWERS OVERNIGHT.
* MIN TEMPERATURE.......39-49 AT 5000 FEET...32-42 AT 7000 FEET.
* 24 HR TREND.........8 DEGREES COOLER.
* MAX HUMIDITY..........81-86 PERCENT.
* 24 HR TREND.........9 PERCENT WETTER.
* WIND (20 FT)
* SLOPE/VALLEY.........SOUTHWEST WINDS 5 TO 10 MPH.
* RIDGETOP.............WEST 5 TO 10 MPH.
* CHANCE OF LIGHTNING...35 PERCENT.
* CWR...................90 PERCENT.
SUNDAY
* SKY/WEATHER...........MOSTLY CLOUDY. RAIN SHOWERS AND ISOLATED
SNOW SHOWERS IN THE MORNING, THEN RAIN SHOWERS AND SCATTERED
THUNDERSTORMS IN THE AFTERNOON.
* MAX TEMPERATURE.......51-61 AT 5000 FEET...41-51 AT 7000 FEET.
* 24 HR TREND.........8 DEGREES COOLER.
* MIN HUMIDITY..........55-65 PERCENT AT 5000 FEET...65-75 PERCENT
AT 7000 FEET.
* 24 HR TREND.........4 PERCENT DRIER.
* WIND (20 FT)
* SLOPE/VALLEY.........WEST WINDS 5 TO 10 MPH.
* RIDGETOP.............SOUTHWEST 15 TO 25 MPH.
* CHANCE OF LIGHTNING...26 PERCENT.
* CWR...................50 PERCENT.
FORECAST DAYS 3 THROUGH 7...
SUNDAY NIGHT
CLOUDY. SHOWERS AND ISOLATED SNOW SHOWERS. LOWS
36 TO 46. SOUTHWEST WINDS 5 TO 10 MPH.
MONDAY
CLOUDY. SHOWERS AND ISOLATED THUNDERSTORMS. LOWS 38 TO
48. HIGHS 51 TO 61. SOUTHWEST WINDS 5 TO 10 MPH.
TUESDAY
WARMER. MOSTLY CLOUDY. SCATTERED SHOWERS AND
THUNDERSTORMS. LOWS 41 TO 51. HIGHS 63 TO 73. SOUTHWEST WINDS
5 TO 10 MPH.
WEDNESDAY
PARTLY CLOUDY. SCATTERED SHOWERS AND THUNDERSTORMS.
LOWS 43 TO 53. HIGHS 68 TO 78. SOUTH WINDS 5 TO 10 MPH.
THURSDAY
PARTLY CLOUDY. ISOLATED SHOWERS AND THUNDERSTORMS.
LOWS 46 TO 56. HIGHS 74 TO 84.
FRIDAY
MOSTLY SUNNY. SCATTERED SHOWERS AND THUNDERSTORMS.
HIGHS 74 TO 84.
MTZ124-272215-
WHEATLAND COUNTY/SWEET GRASS COUNTY-
117 AM MDT SAT JUN 27 2026
TODAY
* SKY/WEATHER...........MOSTLY CLOUDY. SCATTERED RAIN SHOWERS AND
ISOLATED THUNDERSTORMS IN THE MORNING, THEN RAIN SHOWERS WITH
THUNDERSTORMS LIKELY IN THE AFTERNOON.
* MAX TEMPERATURE.......65-70.
* 24 HR TREND.........10 DEGREES COOLER.
* MIN HUMIDITY..........53-58 PERCENT.
* 24 HR TREND.........15 PERCENT WETTER.
* WIND (20 FT)
* PLAINS...............NORTHWEST WINDS 5 TO 15 MPH.
* CHANCE OF LIGHTNING...56 PERCENT.
* CWR...................90 PERCENT.
TONIGHT
* SKY/WEATHER...........MOSTLY CLOUDY. RAIN SHOWERS AND SCATTERED
THUNDERSTORMS IN THE EVENING, THEN NUMEROUS RAIN SHOWERS
OVERNIGHT.
* MIN TEMPERATURE.......43-48.
* 24 HR TREND.........6 DEGREES COOLER.
* MAX HUMIDITY..........81-86 PERCENT.
* 24 HR TREND.........1 PERCENT DRIER.
* WIND (20 FT)
* PLAINS...............WEST WINDS 10 TO 20 MPH. GUSTS UP TO 30 MPH
OVERNIGHT.
* CHANCE OF LIGHTNING...34 PERCENT.
* CWR...................70 PERCENT.
SUNDAY
* SKY/WEATHER...........MOSTLY CLOUDY. NUMEROUS RAIN SHOWERS IN THE
MORNING, THEN SCATTERED RAIN SHOWERS AND ISOLATED THUNDERSTORMS
IN THE AFTERNOON.
* MAX TEMPERATURE.......54-59.
* 24 HR TREND.........11 DEGREES COOLER.
* MIN HUMIDITY..........59-64 PERCENT.
* 24 HR TREND.........6 PERCENT WETTER.
* WIND (20 FT)
* PLAINS...............WINDY. WEST WINDS 15 TO 30 MPH WITH GUSTS TO
AROUND 45 MPH.
* CHANCE OF LIGHTNING...19 PERCENT.
* CWR...................60 PERCENT.
FORECAST DAYS 3 THROUGH 7...
SUNDAY NIGHT
WINDY. MOSTLY CLOUDY. NUMEROUS SHOWERS. LOWS
40 TO 45. WEST WINDS 15 TO 30 MPH WITH GUSTS TO AROUND 45 MPH.
MONDAY
WINDY. MOSTLY CLOUDY. NUMEROUS SHOWERS. LOWS 41 TO 46.
HIGHS 57 TO 62. WEST WINDS 15 TO 30 MPH WITH GUSTS TO AROUND
45 MPH.
TUESDAY
WARMER. PARTLY CLOUDY. ISOLATED SHOWERS AND
THUNDERSTORMS. LOWS 43 TO 48. HIGHS 68 TO 73. WEST WINDS 10 TO
20 MPH WITH GUSTS TO AROUND 30 MPH.
WEDNESDAY
PARTLY CLOUDY. ISOLATED SHOWERS AND THUNDERSTORMS.
LOWS 45 TO 50. HIGHS 72 TO 77. SOUTHWEST WINDS 5 TO 15 MPH.
THURSDAY
PARTLY CLOUDY. ISOLATED SHOWERS AND THUNDERSTORMS.
LOWS 48 TO 53. HIGHS 77 TO 82.
FRIDAY
PARTLY SUNNY. SCATTERED SHOWERS AND THUNDERSTORMS.
HIGHS 79 TO 84.
MTZ125-272215-
STILLWATER COUNTY-
117 AM MDT SAT JUN 27 2026
TODAY
* SKY/WEATHER...........MOSTLY CLOUDY. SCATTERED RAIN SHOWERS AND
ISOLATED THUNDERSTORMS IN THE MORNING, THEN RAIN SHOWERS AND
SCATTERED THUNDERSTORMS IN THE AFTERNOON.
* MAX TEMPERATURE.......69-74.
* 24 HR TREND.........10 DEGREES COOLER.
* MIN HUMIDITY..........52-57 PERCENT.
* 24 HR TREND.........19 PERCENT WETTER.
* WIND (20 FT)
* PLAINS...............NORTHEAST WINDS 5 TO 10 MPH IN THE MORNING
SHIFTING TO THE NORTHWEST IN THE AFTERNOON.
* CHANCE OF LIGHTNING...51 PERCENT.
* CWR...................70 PERCENT.
TONIGHT
* SKY/WEATHER...........MOSTLY CLOUDY. NUMEROUS RAIN SHOWERS AND
SCATTERED THUNDERSTORMS IN THE EVENING, THEN SCATTERED RAIN
SHOWERS OVERNIGHT.
* MIN TEMPERATURE.......46-51.
* 24 HR TREND.........6 DEGREES COOLER.
* MAX HUMIDITY..........76-81 PERCENT.
* 24 HR TREND.........10 PERCENT WETTER.
* WIND (20 FT)
* PLAINS...............NORTH WINDS 5 TO 10 MPH IN THE EVENING
SHIFTING TO THE SOUTHWEST OVERNIGHT.
* CHANCE OF LIGHTNING...34 PERCENT.
* CWR...................50 PERCENT.
SUNDAY
* SKY/WEATHER...........MOSTLY SUNNY. SCATTERED RAIN SHOWERS AND
ISOLATED THUNDERSTORMS IN THE AFTERNOON.
* MAX TEMPERATURE.......64-69.
* 24 HR TREND.........5 DEGREES COOLER.
* MIN HUMIDITY..........36-41 PERCENT.
* 24 HR TREND.........16 PERCENT DRIER.
* WIND (20 FT)
* PLAINS...............WEST WINDS 5 TO 15 MPH.
* CHANCE OF LIGHTNING...24 PERCENT.
* CWR...................ZERO.
FORECAST DAYS 3 THROUGH 7...
SUNDAY NIGHT
PARTLY CLOUDY. ISOLATED SHOWERS. LOWS 43 TO 48.
WEST WINDS 5 TO 15 MPH.
MONDAY
MOSTLY CLOUDY. NUMEROUS SHOWERS AND ISOLATED
THUNDERSTORMS. LOWS 44 TO 49. HIGHS 64 TO 69. WEST WINDS 5 TO
15 MPH WITH GUSTS TO AROUND 30 MPH.
TUESDAY
PARTLY CLOUDY. SCATTERED SHOWERS AND THUNDERSTORMS.
LOWS 46 TO 51. HIGHS 71 TO 76. WEST WINDS 5 TO 10 MPH.
WEDNESDAY
MOSTLY CLOUDY. SCATTERED SHOWERS AND THUNDERSTORMS.
LOWS 48 TO 53. HIGHS 76 TO 81. SOUTHWEST WINDS 5 TO 10 MPH.
THURSDAY
PARTLY CLOUDY. ISOLATED SHOWERS AND THUNDERSTORMS.
LOWS 52 TO 57. HIGHS 82 TO 87.
FRIDAY
MOSTLY SUNNY. SCATTERED SHOWERS AND THUNDERSTORMS.
HIGHS 83 TO 88.
MTZ126-272215-
BEARTOOTH RANGER DISTRICT CUSTER NATIONAL FOREST-
117 AM MDT SAT JUN 27 2026
TODAY
* SKY/WEATHER...........MOSTLY CLOUDY. SCATTERED RAIN SHOWERS AND
ISOLATED THUNDERSTORMS IN THE MORNING, THEN RAIN SHOWERS AND
SCATTERED THUNDERSTORMS IN THE AFTERNOON.
* MAX TEMPERATURE.......67-74 AT 5000 FEET...57-67 AT 7000 FEET.
* 24 HR TREND.........10 DEGREES COOLER.
* MIN HUMIDITY..........46-56 PERCENT AT 5000 FEET...55-65 PERCENT
AT 7000 FEET.
* 24 HR TREND.........13 PERCENT WETTER.
* WIND (20 FT)
* SLOPE/VALLEY.........SOUTHWEST WINDS 5 TO 10 MPH.
* RIDGETOP.............SOUTHWEST 10 TO 20 MPH.
* CHANCE OF LIGHTNING...48 PERCENT.
* CWR...................30 PERCENT.
TONIGHT
* SKY/WEATHER...........MOSTLY CLOUDY. NUMEROUS RAIN SHOWERS AND
SCATTERED THUNDERSTORMS IN THE EVENING, THEN SCATTERED RAIN
SHOWERS AND SNOW SHOWERS OVERNIGHT.
* MIN TEMPERATURE.......46-52 AT 5000 FEET...37-47 AT 7000 FEET.
* 24 HR TREND.........8 DEGREES COOLER.
* MAX HUMIDITY..........75-80 PERCENT.
* 24 HR TREND.........16 PERCENT WETTER.
* WIND (20 FT)
* SLOPE/VALLEY.........SOUTHWEST WINDS 5 TO 10 MPH.
* RIDGETOP.............SOUTHWEST 10 TO 20 MPH.
* CHANCE OF LIGHTNING...31 PERCENT.
* CWR...................30 PERCENT.
SUNDAY
* SKY/WEATHER...........PARTLY SUNNY. SCATTERED RAIN SHOWERS,
THUNDERSTORMS AND SNOW SHOWERS IN THE AFTERNOON.
* MAX TEMPERATURE.......61-69 AT 5000 FEET...51-61 AT 7000 FEET.
* 24 HR TREND.........6 DEGREES COOLER.
* MIN HUMIDITY..........37-47 PERCENT AT 5000 FEET...42-52 PERCENT
AT 7000 FEET.
* 24 HR TREND.........14 PERCENT DRIER.
* WIND (20 FT)
* SLOPE/VALLEY.........WEST WINDS 10 TO 20 MPH.
* RIDGETOP.............WEST 15 TO 30 MPH.
* CHANCE OF LIGHTNING...25 PERCENT.
* CWR...................ZERO.
FORECAST DAYS 3 THROUGH 7...
SUNDAY NIGHT
PARTLY CLOUDY. ISOLATED SNOW SHOWERS AND SHOWERS.
LOWS 44 TO 49. SOUTHWEST WINDS 10 TO 20 MPH.
MONDAY
MOSTLY CLOUDY. NUMEROUS SNOW SHOWERS, SHOWERS AND
ISOLATED THUNDERSTORMS. LOWS 45 TO 50. HIGHS 60 TO 67. WEST WINDS
15 TO 25 MPH WITH GUSTS TO AROUND 40 MPH.
TUESDAY
MOSTLY CLOUDY. SCATTERED SHOWERS AND THUNDERSTORMS.
LOWS 47 TO 53. HIGHS 66 TO 74. WEST WINDS 5 TO 15 MPH.
WEDNESDAY
MOSTLY CLOUDY. SCATTERED SHOWERS AND THUNDERSTORMS.
LOWS 49 TO 58. HIGHS 72 TO 80. SOUTHWEST WINDS 5 TO 15 MPH.
THURSDAY
PARTLY CLOUDY. ISOLATED SHOWERS AND THUNDERSTORMS.
LOWS 53 TO 62. HIGHS 79 TO 86.
FRIDAY
MOSTLY SUNNY. ISOLATED SHOWERS AND THUNDERSTORMS. HIGHS
81 TO 89.
MTZ127-272215-
GOLDEN VALLEY COUNTY/MUSSELSHELL COUNTY-
117 AM MDT SAT JUN 27 2026
TODAY
* SKY/WEATHER...........MOSTLY CLOUDY. SCATTERED RAIN SHOWERS IN
THE MORNING, THEN RAIN SHOWERS AND SCATTERED THUNDERSTORMS IN THE
AFTERNOON.
* MAX TEMPERATURE.......67-72.
* 24 HR TREND.........10 DEGREES COOLER.
* MIN HUMIDITY..........54-59 PERCENT.
* 24 HR TREND.........16 PERCENT WETTER.
* WIND (20 FT)
* PLAINS...............NORTH WINDS 5 TO 15 MPH.
* CHANCE OF LIGHTNING...47 PERCENT.
* CWR...................80 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.........7 DEGREES COOLER.
* MAX HUMIDITY..........79-84 PERCENT.
* 24 HR TREND.........1 PERCENT WETTER.
* WIND (20 FT)
* PLAINS...............WEST WINDS 5 TO 15 MPH.
* CHANCE OF LIGHTNING...38 PERCENT.
* CWR...................60 PERCENT.
SUNDAY
* SKY/WEATHER...........PARTLY SUNNY WITH SCATTERED RAIN SHOWERS.
* MAX TEMPERATURE.......58-63.
* 24 HR TREND.........9 DEGREES COOLER.
* MIN HUMIDITY..........54-59 PERCENT.
* 24 HR TREND.........UNCHANGED.
* WIND (20 FT)
* PLAINS...............WEST WINDS 15 TO 25 MPH WITH GUSTS TO AROUND
40 MPH.
* CHANCE OF LIGHTNING...13 PERCENT.
* CWR...................20 PERCENT.
FORECAST DAYS 3 THROUGH 7...
SUNDAY NIGHT
MOSTLY CLOUDY. SCATTERED SHOWERS. LOWS 47 TO 52.
WEST WINDS 15 TO 25 MPH WITH GUSTS TO AROUND 35 MPH.
MONDAY
MOSTLY CLOUDY. NUMEROUS SHOWERS. LOWS 49 TO 54. HIGHS
59 TO 64. WEST WINDS 15 TO 25 MPH WITH GUSTS TO AROUND 40 MPH.
TUESDAY
PARTLY CLOUDY. LOWS 51 TO 56. HIGHS 68 TO 73. WEST
WINDS 5 TO 15 MPH WITH GUSTS TO AROUND 30 MPH.
WEDNESDAY
PARTLY CLOUDY. ISOLATED SHOWERS AND THUNDERSTORMS.
LOWS 54 TO 59. HIGHS 74 TO 79. SOUTHWEST WINDS 5 TO 10 MPH.
THURSDAY
PARTLY CLOUDY. LOWS 58 TO 63. HIGHS 80 TO 85.
FRIDAY
MOSTLY SUNNY. ISOLATED SHOWERS AND THUNDERSTORMS. HIGHS
81 TO 86.
MTZ128-272215-
YELLOWSTONE COUNTY-
117 AM MDT SAT JUN 27 2026
TODAY
* SKY/WEATHER...........PARTLY SUNNY. SCATTERED RAIN SHOWERS IN THE
MORNING, THEN RAIN SHOWERS AND SCATTERED THUNDERSTORMS IN THE
AFTERNOON.
* MAX TEMPERATURE.......73-78.
* 24 HR TREND.........10 DEGREES COOLER.
* MIN HUMIDITY..........52-57 PERCENT.
* 24 HR TREND.........13 PERCENT WETTER.
* WIND (20 FT)
* PLAINS...............NORTH WINDS 5 TO 10 MPH.
* CHANCE OF LIGHTNING...47 PERCENT.
* CWR...................90 PERCENT.
TONIGHT
* SKY/WEATHER...........MOSTLY CLOUDY. RAIN SHOWERS AND SCATTERED
THUNDERSTORMS IN THE EVENING, THEN SCATTERED RAIN SHOWERS
OVERNIGHT.
* MIN TEMPERATURE.......50-55.
* 24 HR TREND.........7 DEGREES COOLER.
* MAX HUMIDITY..........79-84 PERCENT.
* 24 HR TREND.........UNCHANGED.
* WIND (20 FT)
* PLAINS...............WEST WINDS 5 TO 15 MPH.
* CHANCE OF LIGHTNING...37 PERCENT.
* CWR...................60 PERCENT.
SUNDAY
* SKY/WEATHER...........MOSTLY SUNNY. ISOLATED RAIN SHOWERS IN THE
MORNING, THEN ISOLATED SHOWERS AND THUNDERSTORMS IN THE
AFTERNOON.
* MAX TEMPERATURE.......66-71.
* 24 HR TREND.........7 DEGREES COOLER.
* MIN HUMIDITY..........39-44 PERCENT.
* 24 HR TREND.........13 PERCENT DRIER.
* WIND (20 FT)
* PLAINS...............WEST WINDS 15 TO 25 MPH WITH GUSTS TO AROUND
40 MPH.
* CHANCE OF LIGHTNING...17 PERCENT.
* CWR...................ZERO.
FORECAST DAYS 3 THROUGH 7...
SUNDAY NIGHT
MOSTLY CLOUDY. ISOLATED SHOWERS. LOWS 47 TO 52.
WEST WINDS 10 TO 20 MPH WITH GUSTS TO AROUND 30 MPH.
MONDAY
MOSTLY CLOUDY. SCATTERED SHOWERS. LOWS 49 TO 54. HIGHS
66 TO 71. WEST WINDS 15 TO 25 MPH WITH GUSTS TO AROUND 40 MPH.
TUESDAY
PARTLY CLOUDY. LOWS 50 TO 55. HIGHS 75 TO 80. WEST
WINDS 5 TO 15 MPH.
WEDNESDAY
PARTLY CLOUDY. ISOLATED SHOWERS AND THUNDERSTORMS.
LOWS 53 TO 58. HIGHS 79 TO 84. WEST WINDS 5 TO 10 MPH.
THURSDAY
PARTLY CLOUDY. LOWS 57 TO 62. HIGHS 85 TO 90.
FRIDAY
MOSTLY SUNNY. HIGHS 87 TO 92.
MTZ129-272215-
CROW INDIAN RESERVATION/BIGHORN CANYON REC AREA-
117 AM MDT SAT JUN 27 2026
TODAY
* SKY/WEATHER...........PARTLY SUNNY. RAIN SHOWERS AND SCATTERED
THUNDERSTORMS IN THE AFTERNOON.
* MAX TEMPERATURE.......64-74 AT 5000 FEET...58-65 AT 7000 FEET.
* 24 HR TREND.........9 DEGREES COOLER.
* MIN HUMIDITY..........50-60 PERCENT AT 5000 FEET...57-67 PERCENT
AT 7000 FEET.
* 24 HR TREND.........24 PERCENT WETTER.
* WIND (20 FT)
* SLOPE/VALLEY.........WEST WINDS 5 TO 15 MPH.
* RIDGETOP.............SOUTH 10 TO 20 MPH.
* CHANCE OF LIGHTNING...49 PERCENT.
* CWR...................60 PERCENT.
TONIGHT
* SKY/WEATHER...........MOSTLY CLOUDY. NUMEROUS RAIN SHOWERS AND
SCATTERED THUNDERSTORMS IN THE EVENING, THEN SCATTERED RAIN
SHOWERS OVERNIGHT.
* MIN TEMPERATURE.......47-52 AT 5000 FEET...43-48 AT 7000 FEET.
* 24 HR TREND.........8 DEGREES COOLER.
* MAX HUMIDITY..........82-87 PERCENT.
* 24 HR TREND.........2 PERCENT WETTER.
* WIND (20 FT)
* SLOPE/VALLEY.........SOUTHWEST WINDS 5 TO 10 MPH.
* RIDGETOP.............SOUTHWEST 15 TO 25 MPH.
* CHANCE OF LIGHTNING...41 PERCENT.
* CWR...................50 PERCENT.
SUNDAY
* SKY/WEATHER...........MOSTLY SUNNY. SCATTERED SHOWERS AND
THUNDERSTORMS IN THE AFTERNOON.
* MAX TEMPERATURE.......59-69 AT 5000 FEET...53-61 AT 7000 FEET.
* 24 HR TREND.........4 DEGREES COOLER.
* MIN HUMIDITY..........37-47 PERCENT AT 5000 FEET...41-51 PERCENT
AT 7000 FEET.
* 24 HR TREND.........25 PERCENT DRIER.
* WIND (20 FT)
* SLOPE/VALLEY.........NORTHWEST WINDS 10 TO 20 MPH.
* RIDGETOP.............SOUTHWEST 15 TO 30 MPH.
* CHANCE OF LIGHTNING...25 PERCENT.
* CWR...................ZERO.
FORECAST DAYS 3 THROUGH 7...
SUNDAY NIGHT
MOSTLY CLOUDY. ISOLATED SHOWERS AND
THUNDERSTORMS. LOWS 44 TO 50. WEST WINDS 5 TO 15 MPH.
MONDAY
MOSTLY CLOUDY. SCATTERED SHOWERS. LOWS 46 TO 51. HIGHS
58 TO 68. WEST WINDS 10 TO 20 MPH WITH GUSTS TO AROUND 30 MPH.
TUESDAY
PARTLY CLOUDY. ISOLATED SHOWERS AND THUNDERSTORMS.
LOWS 48 TO 54. HIGHS 65 TO 75. WEST WINDS 5 TO 10 MPH.
WEDNESDAY
PARTLY CLOUDY. LOWS 51 TO 58. HIGHS 70 TO 80. WEST
WINDS 5 TO 10 MPH.
THURSDAY
PARTLY CLOUDY. LOWS 56 TO 62. HIGHS 76 TO 86.
FRIDAY
MOSTLY SUNNY. HIGHS 78 TO 88.
MTZ130-272215-
NORTHERN ROSEBUD/NORTHERN TREASURE COUNTIES-
117 AM MDT SAT JUN 27 2026
TODAY
* SKY/WEATHER...........MOSTLY CLOUDY. SCATTERED SHOWERS AND
THUNDERSTORMS IN THE AFTERNOON.
* MAX TEMPERATURE.......76-81.
* 24 HR TREND.........7 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...43 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.
* MIN TEMPERATURE.......50-55.
* 24 HR TREND.........7 DEGREES COOLER.
* MAX HUMIDITY..........94-99 PERCENT.
* 24 HR TREND.........UNCHANGED.
* WIND (20 FT)
* PLAINS...............WEST WINDS 5 TO 10 MPH.
* CHANCE OF LIGHTNING...35 PERCENT.
* CWR...................60 PERCENT.
SUNDAY
* SKY/WEATHER...........MOSTLY SUNNY. ISOLATED RAIN SHOWERS IN THE
MORNING.
* MAX TEMPERATURE.......69-74.
* 24 HR TREND.........7 DEGREES COOLER.
* MIN HUMIDITY..........41-46 PERCENT.
* 24 HR TREND.........8 PERCENT DRIER.
* WIND (20 FT)
* PLAINS...............WEST WINDS 10 TO 20 MPH. GUSTS UP TO 30 MPH
IN THE AFTERNOON.
* CHANCE OF LIGHTNING...5 PERCENT.
* CWR...................LESS THAN 10 PERCENT.
FORECAST DAYS 3 THROUGH 7...
SUNDAY NIGHT
MOSTLY CLOUDY. LOWS 47 TO 52. WEST WINDS 5 TO
15 MPH.
MONDAY
MOSTLY CLOUDY. SCATTERED SHOWERS. LOWS 49 TO 54. HIGHS
68 TO 73. WEST WINDS 10 TO 20 MPH WITH GUSTS TO AROUND 30 MPH.
TUESDAY
MOSTLY CLEAR. LOWS 50 TO 55. HIGHS 75 TO 80. WEST
WINDS 5 TO 15 MPH.
WEDNESDAY
PARTLY CLOUDY. LOWS 54 TO 59. HIGHS 81 TO 86.
NORTHEAST WINDS 5 TO 10 MPH.
THURSDAY
PARTLY CLOUDY. LOWS 57 TO 62. HIGHS 87 TO 92.
FRIDAY
MOSTLY SUNNY. HIGHS 89 TO 94.
MTZ131-272215-
NORTHERN CHEYENNE INDIAN RESERVATION/ASHLAND RANGER DISTRICT
CUSTER NATL FOREST-
117 AM MDT SAT JUN 27 2026
TODAY
* SKY/WEATHER...........MOSTLY CLOUDY. RAIN SHOWERS AND SCATTERED
THUNDERSTORMS IN THE AFTERNOON.
* MAX TEMPERATURE.......76-81.
* 24 HR TREND.........7 DEGREES COOLER.
* MIN HUMIDITY..........52-57 PERCENT.
* 24 HR TREND.........18 PERCENT WETTER.
* WIND (20 FT)
* SLOPE/VALLEY.........NORTHWEST WINDS 5 TO 15 MPH.
* RIDGETOP.............SOUTH 15 TO 25 MPH.
* CHANCE OF LIGHTNING...44 PERCENT.
* CWR...................30 PERCENT.
TONIGHT
* SKY/WEATHER...........MOSTLY CLOUDY. NUMEROUS RAIN SHOWERS AND
SCATTERED THUNDERSTORMS IN THE EVENING, THEN SCATTERED RAIN
SHOWERS OVERNIGHT.
* MIN TEMPERATURE.......49-54.
* 24 HR TREND.........8 DEGREES COOLER.
* MAX HUMIDITY..........88-93 PERCENT.
* 24 HR TREND.........5 PERCENT WETTER.
* WIND (20 FT)
* SLOPE/VALLEY.........WEST WINDS 5 TO 10 MPH.
* RIDGETOP.............SOUTHWEST 15 TO 30 MPH.
* CHANCE OF LIGHTNING...42 PERCENT.
* CWR...................20 PERCENT.
SUNDAY
* SKY/WEATHER...........MOSTLY SUNNY.
* MAX TEMPERATURE.......71-76.
* 24 HR TREND.........5 DEGREES COOLER.
* MIN HUMIDITY..........32-37 PERCENT.
* 24 HR TREND.........20 PERCENT DRIER.
* WIND (20 FT)
* SLOPE/VALLEY.........NORTHWEST WINDS 5 TO 15 MPH.
* RIDGETOP.............SOUTHWEST 15 TO 30 MPH.
* CHANCE OF LIGHTNING...10 PERCENT.
* CWR...................ZERO.
FORECAST DAYS 3 THROUGH 7...
SUNDAY NIGHT
MOSTLY CLOUDY. ISOLATED SHOWERS AND
THUNDERSTORMS. LOWS 46 TO 51. NORTHWEST WINDS 5 TO 15 MPH.
MONDAY
MOSTLY CLOUDY. SCATTERED SHOWERS. LOWS 47 TO 52. HIGHS
70 TO 75. WEST WINDS 5 TO 15 MPH WITH GUSTS TO AROUND 30 MPH.
TUESDAY
MOSTLY CLEAR. LOWS 49 TO 54. HIGHS 75 TO 80. WEST
WINDS 5 TO 10 MPH.
WEDNESDAY
PARTLY CLOUDY. LOWS 53 TO 58. HIGHS 81 TO 86. WEST
WINDS 5 TO 10 MPH.
THURSDAY
MOSTLY CLEAR. LOWS 58 TO 63. HIGHS 88 TO 93.
FRIDAY
SUNNY. HIGHS 91 TO 96.
MTZ132-272215-
CUSTER COUNTY-
117 AM MDT SAT JUN 27 2026
TODAY
* SKY/WEATHER...........MOSTLY SUNNY. SCATTERED SHOWERS AND
THUNDERSTORMS IN THE AFTERNOON.
* MAX TEMPERATURE.......78-83.
* 24 HR TREND.........1 DEGREE COOLER.
* MIN HUMIDITY..........47-52 PERCENT.
* 24 HR TREND.........3 PERCENT DRIER.
* WIND (20 FT)
* PLAINS...............SOUTHWEST WINDS 5 TO 15 MPH.
* CHANCE OF LIGHTNING...30 PERCENT.
* CWR...................30 PERCENT.
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.........7 DEGREES COOLER.
* MAX HUMIDITY..........94-99 PERCENT.
* 24 HR TREND.........11 PERCENT WETTER.
* WIND (20 FT)
* PLAINS...............WEST WINDS 5 TO 15 MPH.
* CHANCE OF LIGHTNING...41 PERCENT.
* CWR...................40 PERCENT.
SUNDAY
* SKY/WEATHER...........MOSTLY SUNNY. ISOLATED SHOWERS AND
THUNDERSTORMS IN THE AFTERNOON.
* MAX TEMPERATURE.......70-75.
* 24 HR TREND.........8 DEGREES COOLER.
* MIN HUMIDITY..........39-44 PERCENT.
* 24 HR TREND.........8 PERCENT DRIER.
* WIND (20 FT)
* PLAINS...............WEST WINDS 10 TO 20 MPH. GUSTS UP TO 30 MPH
IN THE AFTERNOON.
* CHANCE OF LIGHTNING...17 PERCENT.
* CWR...................ZERO.
FORECAST DAYS 3 THROUGH 7...
SUNDAY NIGHT
MOSTLY CLOUDY. SCATTERED SHOWERS AND
THUNDERSTORMS. LOWS 49 TO 54. WEST WINDS 5 TO 15 MPH.
MONDAY
MOSTLY CLOUDY. SCATTERED SHOWERS. LOWS 49 TO 54. HIGHS
68 TO 73. WEST WINDS 10 TO 20 MPH WITH GUSTS TO AROUND 30 MPH.
TUESDAY
MOSTLY CLEAR. LOWS 51 TO 56. HIGHS 73 TO 78. WEST
WINDS 5 TO 15 MPH.
WEDNESDAY
MOSTLY CLEAR. ISOLATED SHOWERS AND THUNDERSTORMS.
LOWS 55 TO 60. HIGHS 79 TO 84. SOUTHEAST WINDS 5 TO 15 MPH.
THURSDAY
MOSTLY CLEAR. LOWS 58 TO 63. HIGHS 85 TO 90.
FRIDAY
SUNNY. HIGHS 89 TO 94.
MTZ133-272215-
SIOUX RANGER DISTRICT CUSTER NATIONAL FOREST-
117 AM MDT SAT JUN 27 2026
TODAY
* SKY/WEATHER...........MOSTLY SUNNY. SCATTERED RAIN SHOWERS AND
ISOLATED THUNDERSTORMS IN THE AFTERNOON.
* MAX TEMPERATURE.......83-88.
* 24 HR TREND.........5 DEGREES WARMER.
* MIN HUMIDITY..........44-49 PERCENT.
* 24 HR TREND.........20 PERCENT DRIER.
* WIND (20 FT)
* PLAINS...............SOUTHWEST WINDS 5 TO 15 MPH.
* CHANCE OF LIGHTNING...24 PERCENT.
* CWR...................LESS THAN 10 PERCENT.
TONIGHT
* SKY/WEATHER...........MOSTLY CLOUDY. SCATTERED SHOWERS AND
THUNDERSTORMS IN THE EVENING.
* MIN TEMPERATURE.......53-58.
* 24 HR TREND.........6 DEGREES COOLER.
* MAX HUMIDITY..........92-97 PERCENT.
* 24 HR TREND.........7 PERCENT WETTER.
* WIND (20 FT)
* PLAINS...............WEST WINDS 5 TO 15 MPH.
* CHANCE OF LIGHTNING...38 PERCENT.
* CWR...................20 PERCENT.
SUNDAY
* SKY/WEATHER...........MOSTLY SUNNY.
* MAX TEMPERATURE.......76-81.
* 24 HR TREND.........7 DEGREES COOLER.
* MIN HUMIDITY..........36-41 PERCENT.
* 24 HR TREND.........8 PERCENT DRIER.
* WIND (20 FT)
* PLAINS...............WEST WINDS 10 TO 20 MPH.
* CHANCE OF LIGHTNING...9 PERCENT.
* CWR...................ZERO.
FORECAST DAYS 3 THROUGH 7...
SUNDAY NIGHT
MOSTLY CLOUDY. SCATTERED SHOWERS AND ISOLATED
THUNDERSTORMS. LOWS 50 TO 55. NORTHWEST WINDS 5 TO 15 MPH.
MONDAY
PARTLY CLOUDY. SCATTERED SHOWERS. LOWS 49 TO 54. HIGHS
73 TO 78. WEST WINDS 10 TO 20 MPH WITH GUSTS TO AROUND 35 MPH.
TUESDAY
MOSTLY CLEAR. ISOLATED SHOWERS AND THUNDERSTORMS. LOWS
51 TO 56. HIGHS 75 TO 80. WEST WINDS 5 TO 15 MPH WITH GUSTS TO
AROUND 30 MPH.
WEDNESDAY
MOSTLY CLEAR. ISOLATED SHOWERS AND THUNDERSTORMS.
LOWS 54 TO 59. HIGHS 81 TO 86. SOUTH WINDS 5 TO 15 MPH.
THURSDAY
MOSTLY CLEAR. LOWS 58 TO 63. HIGHS 86 TO 91.
FRIDAY
SUNNY. HIGHS 90 TO 95.
WYZ274-272215-
SHERIDAN COUNTY-
117 AM MDT SAT JUN 27 2026
TODAY
* SKY/WEATHER...........PARTLY SUNNY. ISOLATED RAIN SHOWERS IN THE
MORNING, THEN NUMEROUS RAIN SHOWERS AND SCATTERED THUNDERSTORMS
IN THE AFTERNOON.
* MAX TEMPERATURE.......72-77.
* 24 HR TREND.........10 DEGREES COOLER.
* MIN HUMIDITY..........54-59 PERCENT.
* 24 HR TREND.........9 PERCENT WETTER.
* WIND (20 FT)
* SLOPE/VALLEY.........NORTHWEST WINDS 5 TO 10 MPH.
* RIDGETOP.............SOUTH 10 TO 20 MPH.
* CHANCE OF LIGHTNING...47 PERCENT.
* CWR...................40 PERCENT.
TONIGHT
* SKY/WEATHER...........MOSTLY CLOUDY. SCATTERED SHOWERS AND
THUNDERSTORMS IN THE EVENING, THEN ISOLATED RAIN SHOWERS
OVERNIGHT.
* MIN TEMPERATURE.......44-49.
* 24 HR TREND.........8 DEGREES COOLER.
* MAX HUMIDITY..........91-96 PERCENT.
* 24 HR TREND.........10 PERCENT WETTER.
* WIND (20 FT)
* SLOPE/VALLEY.........SOUTHWEST WINDS 5 TO 10 MPH IN THE EVENING
BECOMING LIGHT OVERNIGHT.
* RIDGETOP.............SOUTHWEST 15 TO 25 MPH.
* CHANCE OF LIGHTNING...36 PERCENT.
* CWR...................10 PERCENT.
SUNDAY
* SKY/WEATHER...........MOSTLY SUNNY. ISOLATED SHOWERS AND
THUNDERSTORMS IN THE AFTERNOON.
* MAX TEMPERATURE.......70-75.
* 24 HR TREND.........2 DEGREES COOLER.
* MIN HUMIDITY..........34-39 PERCENT.
* 24 HR TREND.........20 PERCENT DRIER.
* WIND (20 FT)
* SLOPE/VALLEY.........NORTH WINDS 5 TO 10 MPH.
* RIDGETOP.............SOUTHWEST 15 TO 25 MPH.
* CHANCE OF LIGHTNING...18 PERCENT.
* CWR...................ZERO.
FORECAST DAYS 3 THROUGH 7...
SUNDAY NIGHT
MOSTLY CLOUDY. SCATTERED SHOWERS AND ISOLATED
THUNDERSTORMS. LOWS 42 TO 47. WEST WINDS 5 TO 10 MPH.
MONDAY
PARTLY CLOUDY. SCATTERED SHOWERS. LOWS 43 TO 48. HIGHS
70 TO 75. WEST WINDS 5 TO 15 MPH.
TUESDAY
PARTLY CLOUDY. ISOLATED SHOWERS AND THUNDERSTORMS.
LOWS 44 TO 49. HIGHS 73 TO 78. NORTHWEST WINDS 5 TO 10 MPH.
WEDNESDAY
PARTLY CLOUDY. ISOLATED SHOWERS AND THUNDERSTORMS.
LOWS 48 TO 53. HIGHS 79 TO 84. WEST WINDS 5 TO 10 MPH.
THURSDAY
MOSTLY CLEAR. LOWS 52 TO 57. HIGHS 86 TO 91.
FRIDAY
MOSTLY SUNNY. HIGHS 89 TO 94.
WYZ284-272215-
BIGHORN NATIONAL FOREST-
117 AM MDT SAT JUN 27 2026
TODAY
* SKY/WEATHER...........PARTLY SUNNY. SCATTERED RAIN SHOWERS AND
ISOLATED THUNDERSTORMS IN THE MORNING, THEN NUMEROUS RAIN SHOWERS
AND SCATTERED THUNDERSTORMS IN THE AFTERNOON.
* MAX TEMPERATURE.......60-65.
* 24 HR TREND.........9 DEGREES COOLER.
* MIN HUMIDITY..........46-51 PERCENT.
* 24 HR TREND.........17 PERCENT WETTER.
* WIND (20 FT)
* AT BURGESS JCT.......SOUTHWEST WINDS 10 TO 20 MPH. GUSTS UP TO 30
MPH IN THE AFTERNOON.
* CHANCE OF LIGHTNING...49 PERCENT.
* CWR...................20 PERCENT.
TONIGHT
* SKY/WEATHER...........MOSTLY CLOUDY. SCATTERED SHOWERS AND
THUNDERSTORMS IN THE EVENING, THEN SCATTERED RAIN SHOWERS
OVERNIGHT.
* MIN TEMPERATURE.......35-40.
* 24 HR TREND.........8 DEGREES COOLER.
* MAX HUMIDITY..........93-98 PERCENT.
* 24 HR TREND.........13 PERCENT WETTER.
* WIND (20 FT)
* AT BURGESS JCT.......SOUTHWEST WINDS 5 TO 15 MPH.
* CHANCE OF LIGHTNING...33 PERCENT.
* CWR...................10 PERCENT.
SUNDAY
* SKY/WEATHER...........MOSTLY SUNNY. ISOLATED SHOWERS AND
THUNDERSTORMS IN THE AFTERNOON.
* MAX TEMPERATURE.......54-59.
* 24 HR TREND.........6 DEGREES COOLER.
* MIN HUMIDITY..........33-38 PERCENT.
* 24 HR TREND.........13 PERCENT DRIER.
* WIND (20 FT)
* AT BURGESS JCT.......SOUTHWEST WINDS 15 TO 25 MPH WITH GUSTS TO
AROUND 40 MPH.
* CHANCE OF LIGHTNING...17 PERCENT.
* CWR...................ZERO.
FORECAST DAYS 3 THROUGH 7...
SUNDAY NIGHT
MOSTLY CLOUDY. SCATTERED SHOWERS, ISOLATED
THUNDERSTORMS AND SNOW SHOWERS. LOWS 32 TO 37. SOUTHWEST WINDS
10 TO 20 MPH WITH GUSTS TO AROUND 30 MPH.
MONDAY
MOSTLY CLOUDY. SCATTERED SHOWERS AND SNOW SHOWERS. LOWS
33 TO 38. HIGHS 51 TO 56. SOUTHWEST WINDS 15 TO 25 MPH WITH GUSTS
TO AROUND 50 MPH.
TUESDAY
PARTLY CLOUDY. ISOLATED SHOWERS AND THUNDERSTORMS.
LOWS 36 TO 41. HIGHS 57 TO 62. SOUTHWEST WINDS 5 TO 15 MPH.
WEDNESDAY
PARTLY CLOUDY. ISOLATED SHOWERS AND THUNDERSTORMS.
LOWS 40 TO 45. HIGHS 63 TO 68. SOUTHWEST WINDS 5 TO 15 MPH.
THURSDAY
PARTLY CLOUDY. LOWS 44 TO 49. HIGHS 69 TO 74.
FRIDAY
MOSTLY SUNNY. HIGHS 72 TO 77.
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