164
FNUS55 KBYZ 150727
FWFBYZ
FIRE WEATHER PLANNING FORECAST FOR SCEN AND SERN MONTANA
NATIONAL WEATHER SERVICE BILLINGS MT
127 AM MDT FRI MAY 15 2026
..DRY AND BREEZY TODAY
DISCUSSION
DRY AND BREEZY CONDITIONS CAN BE EXPECTED TODAY WITH HIGHS IN THE
60S TO LOWER 70S AND AFTERNOON RH DROPPING INTO THE TEENS AND 20S
PERCENT. WEST TO NORTHWEST WINDS WILL INCREASE THIS MORNING AND
AFTERNOON WITH GUSTS OF 20 TO 40 MPH, STRONGEST OVER THE WESTERN
FOOTHILLS AND NORTHERN AREAS. WINDS DECREASE THIS EVENING. WHILE
OUR SPRING GREEN-UP SHOULD HELP LIMIT WIDESPREAD CONCERNS TODAY,
LOCAL POCKETS OF ELEVATED CONDITIONS MAY EXIST WHERE FUELS ARE
DRIER.
SATURDAY WILL BRING A TRANSITION DAY, WITH GENERALLY LIGHT WINDS
TO THE AREA. A WEATHER SYSTEM LIFTING INTO THE REGION WILL BRING
INCREASING SHOWER CHANCES TO WESTERN AREAS STARTING SATURDAY
NIGHT, WITH PERIODS OF SHOWERS AND WEAK THUNDERSTORMS AT TIMES
OVER THE AREA SUNDAY INTO TUESDAY. COOLER TEMPERATURES CAN BE
EXPECTED, WITH ACCUMULATING SNOW IN THE HIGH COUNTRY, AND PERHAPS
THE FOOTHILLS. MUCH UNCERTAINTY REMAINS WITH PRECIPITATION
AMOUNTS AT THIS TIME, THOUGH THERE ARE MODERATE TO GOOD CHANCES
FOR WETTING RAINS. PALMQUIST
MTZ123-152215-
GALLATIN NATIONAL FOREST-
127 AM MDT FRI MAY 15 2026
TODAY
* SKY/WEATHER...........MOSTLY SUNNY.
* MAX TEMPERATURE.......60-70 AT 5000 FEET...46-56 AT 7000 FEET.
* 24 HR TREND.........3 DEGREES COOLER.
* MIN HUMIDITY..........13-23 PERCENT AT 5000 FEET...20-30 PERCENT
AT 7000 FEET.
* 24 HR TREND.........UNCHANGED.
* WIND (20 FT)
* SLOPE/VALLEY.........WEST WINDS 5 TO 15 MPH.
* RIDGETOP.............WEST 10 TO 20 MPH.
* CHANCE OF LIGHTNING...2 PERCENT.
* CWR...................ZERO.
TONIGHT
* SKY/WEATHER...........MOSTLY CLOUDY.
* MIN TEMPERATURE.......35-45 AT 5000 FEET...31-41 AT 7000 FEET.
* 24 HR TREND.........1 DEGREE WARMER.
* MAX HUMIDITY..........42-52 PERCENT AT 5000 FEET...45-55 PERCENT
AT 7000 FEET.
* 24 HR TREND.........7 PERCENT DRIER.
* WIND (20 FT)
* SLOPE/VALLEY.........NORTHWEST WINDS 5 TO 10 MPH IN THE EVENING
BECOMING LIGHT OVERNIGHT.
* RIDGETOP.............NORTHWEST 5 TO 15 MPH.
* CHANCE OF LIGHTNING...2 PERCENT.
* CWR...................ZERO.
SATURDAY
* SKY/WEATHER...........CLOUDY. RAIN SHOWERS, SNOW SHOWERS AND
SCATTERED THUNDERSTORMS IN THE AFTERNOON.
* MAX TEMPERATURE.......55-65 AT 5000 FEET...43-53 AT 7000 FEET.
* 24 HR TREND.........5 DEGREES COOLER.
* MIN HUMIDITY..........27-37 PERCENT AT 5000 FEET...38-48 PERCENT
AT 7000 FEET.
* 24 HR TREND.........16 PERCENT WETTER.
* WIND (20 FT)
* SLOPE/VALLEY.........WEST WINDS 5 TO 10 MPH.
* RIDGETOP.............WEST 5 TO 15 MPH.
* CHANCE OF LIGHTNING...25 PERCENT.
* CWR...................40 PERCENT.
FORECAST DAYS 3 THROUGH 7...
SATURDAY NIGHT
COLDER, CLOUDY. SNOW SHOWERS. LOWS 27 TO 37.
NORTHWEST WINDS 5 TO 10 MPH.
SUNDAY
COLDER, CLOUDY. SNOW SHOWERS AND ISOLATED
THUNDERSTORMS. LOWS 23 TO 31. HIGHS 38 TO 48. NORTHWEST WINDS
5 TO 10 MPH.
MONDAY
MOSTLY CLOUDY. NUMEROUS SNOW SHOWERS. LOWS 23 TO 29.
HIGHS 36 TO 46. NORTHWEST WINDS 5 TO 10 MPH.
TUESDAY
NOT AS COOL. MOSTLY CLOUDY. ISOLATED THUNDERSTORMS AND
SNOW SHOWERS. LOWS 28 TO 35. HIGHS 48 TO 58. SOUTHWEST WINDS 5 TO
10 MPH.
WEDNESDAY
PARTLY CLOUDY. ISOLATED SHOWERS, THUNDERSTORMS AND
SNOW SHOWERS. LOWS 34 TO 43. HIGHS 57 TO 66.
THURSDAY
MOSTLY SUNNY. ISOLATED SHOWERS AND THUNDERSTORMS.
HIGHS 63 TO 73.
MTZ124-152215-
WHEATLAND COUNTY/SWEET GRASS COUNTY-
127 AM MDT FRI MAY 15 2026
TODAY
* SKY/WEATHER...........SUNNY.
* MAX TEMPERATURE.......61-66.
* 24 HR TREND.........6 DEGREES COOLER.
* MIN HUMIDITY..........17-22 PERCENT.
* 24 HR TREND.........UNCHANGED.
* WIND (20 FT)
* PLAINS...............WINDY. WEST WINDS 15 TO 30 MPH WITH GUSTS TO
AROUND 45 MPH.
* CHANCE OF LIGHTNING...1 PERCENT.
* CWR...................ZERO.
TONIGHT
* SKY/WEATHER...........PARTLY CLOUDY IN THE EVENING THEN BECOMING
CLOUDY.
* MIN TEMPERATURE.......38-43.
* 24 HR TREND.........2 DEGREES COOLER.
* MAX HUMIDITY..........47-52 PERCENT.
* 24 HR TREND.........2 PERCENT WETTER.
* WIND (20 FT)
* PLAINS...............WEST WINDS 10 TO 20 MPH WITH GUSTS TO AROUND
35 MPH IN THE EVENING DECREASING TO 5 TO 10 MPH OVERNIGHT.
* CHANCE OF LIGHTNING...2 PERCENT.
* CWR...................ZERO.
SATURDAY
* SKY/WEATHER...........CLOUDY. NUMEROUS RAIN SHOWERS AND ISOLATED
THUNDERSTORMS IN THE AFTERNOON.
* MAX TEMPERATURE.......57-62.
* 24 HR TREND.........4 DEGREES COOLER.
* MIN HUMIDITY..........31-36 PERCENT.
* 24 HR TREND.........14 PERCENT WETTER.
* WIND (20 FT)
* PLAINS...............SOUTH WINDS 5 TO 10 MPH IN THE MORNING
SHIFTING TO THE NORTH 5 TO 15 MPH IN THE AFTERNOON.
* CHANCE OF LIGHTNING...24 PERCENT.
* CWR...................40 PERCENT.
FORECAST DAYS 3 THROUGH 7...
SATURDAY NIGHT
CLOUDY. SHOWERS AND ISOLATED SNOW SHOWERS. LOWS
31 TO 36. NORTHWEST WINDS 10 TO 20 MPH.
SUNDAY
COLDER. MOSTLY CLOUDY. NUMEROUS SHOWERS AND SNOW
SHOWERS. LOWS 26 TO 31. HIGHS 41 TO 46. NORTHWEST WINDS 15 TO
25 MPH WITH GUSTS TO AROUND 35 MPH.
MONDAY
MOSTLY CLOUDY. SCATTERED SHOWERS AND SNOW SHOWERS. LOWS
25 TO 30. HIGHS 40 TO 45. NORTHWEST WINDS 5 TO 15 MPH.
TUESDAY
WARMER. MOSTLY CLOUDY. LOWS 30 TO 35. HIGHS 52 TO 57.
WEST WINDS 5 TO 15 MPH.
WEDNESDAY
PARTLY CLOUDY. ISOLATED SHOWERS AND THUNDERSTORMS.
LOWS 36 TO 41. HIGHS 61 TO 66.
THURSDAY
MOSTLY SUNNY. HIGHS 66 TO 71.
MTZ125-152215-
STILLWATER COUNTY-
127 AM MDT FRI MAY 15 2026
TODAY
* SKY/WEATHER...........MOSTLY SUNNY.
* MAX TEMPERATURE.......66-71.
* 24 HR TREND.........5 DEGREES COOLER.
* MIN HUMIDITY..........17-22 PERCENT.
* 24 HR TREND.........5 PERCENT WETTER.
* WIND (20 FT)
* PLAINS...............NORTHWEST WINDS 10 TO 20 MPH.
* CHANCE OF LIGHTNING...7 PERCENT.
* CWR...................ZERO.
TONIGHT
* SKY/WEATHER...........PARTLY CLOUDY.
* MIN TEMPERATURE.......40-45.
* 24 HR TREND.........1 DEGREE WARMER.
* MAX HUMIDITY..........43-48 PERCENT.
* 24 HR TREND.........1 PERCENT WETTER.
* WIND (20 FT)
* PLAINS...............WEST WINDS 5 TO 10 MPH IN THE EVENING
BECOMING LIGHT OVERNIGHT.
* CHANCE OF LIGHTNING...2 PERCENT.
* CWR...................ZERO.
SATURDAY
* SKY/WEATHER...........MOSTLY SUNNY IN THE MORNING, THEN MOSTLY
CLOUDY WITH ISOLATED SHOWERS AND THUNDERSTORMS IN THE AFTERNOON.
* MAX TEMPERATURE.......64-69.
* 24 HR TREND.........2 DEGREES COOLER.
* MIN HUMIDITY..........25-30 PERCENT.
* 24 HR TREND.........8 PERCENT WETTER.
* WIND (20 FT)
* PLAINS...............SOUTHEAST WINDS 5 TO 10 MPH IN THE MORNING
SHIFTING TO THE NORTH IN THE AFTERNOON.
* CHANCE OF LIGHTNING...18 PERCENT.
* CWR..................10 PERCENT.
FORECAST DAYS 3 THROUGH 7...
SATURDAY NIGHT
CLOUDY. SHOWERS WITH POSSIBLE SNOW SHOWERS AND
THUNDERSTORMS LIKELY. LOWS 34 TO 39. NORTHWEST WINDS 5 TO 15 MPH.
SUNDAY
MUCH COOLER. CLOUDY. SNOW SHOWERS AND SHOWERS. LOWS
28 TO 33. HIGHS 44 TO 49. NORTHWEST WINDS 5 TO 15 MPH.
MONDAY
MOSTLY CLOUDY. SNOW SHOWERS, SHOWERS AND ISOLATED
THUNDERSTORMS. LOWS 26 TO 31. HIGHS 38 TO 43. NORTHWEST WINDS
5 TO 10 MPH.
TUESDAY
WARMER. MOSTLY CLOUDY. ISOLATED SHOWERS AND
THUNDERSTORMS. LOWS 30 TO 35. HIGHS 52 TO 57. WEST WINDS 5 TO
10 MPH.
WEDNESDAY
PARTLY CLOUDY. ISOLATED SHOWERS AND THUNDERSTORMS.
LOWS 37 TO 42. HIGHS 62 TO 67.
THURSDAY
MOSTLY SUNNY. ISOLATED SHOWERS AND THUNDERSTORMS.
HIGHS 68 TO 73.
MTZ126-152215-
BEARTOOTH RANGER DISTRICT CUSTER NATIONAL FOREST-
127 AM MDT FRI MAY 15 2026
TODAY
* SKY/WEATHER...........SUNNY.
* MAX TEMPERATURE.......61-69 AT 5000 FEET...52-62 AT 7000 FEET.
* 24 HR TREND.........3 DEGREES COOLER.
* MIN HUMIDITY..........19-28 PERCENT AT 5000 FEET...24-34 PERCENT
AT 7000 FEET.
* 24 HR TREND.........6 PERCENT WETTER.
* WIND (20 FT)
* SLOPE/VALLEY.........WEST WINDS 10 TO 20 MPH WITH GUSTS TO
AROUND 30 MPH.
* RIDGETOP.............WEST 15 TO 30 MPH.
* CHANCE OF LIGHTNING...4 PERCENT.
* CWR...................ZERO.
TONIGHT
* SKY/WEATHER...........MOSTLY CLOUDY IN THE EVENING THEN CLEARING.
* MIN TEMPERATURE.......41-46 AT 5000 FEET...32-42 AT 7000 FEET.
* 24 HR TREND.........1 DEGREE COOLER.
* MAX HUMIDITY..........41-46 PERCENT.
* 24 HR TREND.........UNCHANGED.
* WIND (20 FT)
* SLOPE/VALLEY.........NORTHWEST WINDS 5 TO 15 MPH.
* RIDGETOP.............NORTHWEST 10 TO 20 MPH.
* CHANCE OF LIGHTNING...3 PERCENT.
* CWR...................ZERO.
SATURDAY
* SKY/WEATHER...........PARTLY SUNNY.
* MAX TEMPERATURE.......62-70 AT 5000 FEET...51-61 AT 7000 FEET.
* 24 HR TREND.........2 DEGREES COOLER.
* MIN HUMIDITY..........19-29 PERCENT AT 5000 FEET...31-41 PERCENT
AT 7000 FEET.
* 24 HR TREND.........5 PERCENT WETTER.
* WIND (20 FT)
* SLOPE/VALLEY.........WEST WINDS 5 TO 15 MPH.
* RIDGETOP.............WEST 10 TO 20 MPH.
* CHANCE OF LIGHTNING...10 PERCENT.
* CWR...................ZERO.
FORECAST DAYS 3 THROUGH 7...
SATURDAY NIGHT
MOSTLY CLOUDY. NUMEROUS SNOW SHOWERS. LOWS
35 TO 41. NORTHWEST WINDS 10 TO 20 MPH.
SUNDAY
COLDER, CLOUDY. SNOW SHOWERS. LOWS 29 TO 34. HIGHS
43 TO 50. NORTHWEST WINDS 10 TO 20 MPH WITH GUSTS TO AROUND
40 MPH.
MONDAY
MOSTLY CLOUDY. SNOW SHOWERS AND ISOLATED THUNDERSTORMS.
LOWS 26 TO 31. HIGHS 34 TO 41. NORTHWEST WINDS 10 TO 20 MPH WITH
GUSTS TO AROUND 35 MPH.
TUESDAY
NOT AS COOL. MOSTLY CLOUDY. SCATTERED SNOW SHOWERS AND
ISOLATED THUNDERSTORMS. LOWS 31 TO 37. HIGHS 45 TO 53. WEST WINDS
5 TO 15 MPH.
WEDNESDAY
PARTLY CLOUDY. SCATTERED SNOW SHOWERS AND ISOLATED
THUNDERSTORMS. LOWS 38 TO 45. HIGHS 55 TO 63.
THURSDAY
MOSTLY SUNNY. SCATTERED SHOWERS, SNOW SHOWERS AND
ISOLATED THUNDERSTORMS. HIGHS 62 TO 70.
MTZ127-152215-
GOLDEN VALLEY COUNTY/MUSSELSHELL COUNTY-
127 AM MDT FRI MAY 15 2026
TODAY
* SKY/WEATHER...........SUNNY.
* MAX TEMPERATURE.......62-67.
* 24 HR TREND.........3 DEGREES COOLER.
* MIN HUMIDITY..........17-22 PERCENT.
* 24 HR TREND.........UNCHANGED.
* WIND (20 FT)
* PLAINS...............WINDY. WEST WINDS 15 TO 30 MPH WITH GUSTS TO
AROUND 40 MPH.
* CHANCE OF LIGHTNING...1 PERCENT.
* CWR...................ZERO.
TONIGHT
* SKY/WEATHER...........PARTLY CLOUDY.
* MIN TEMPERATURE.......45-50.
* 24 HR TREND.........4 DEGREES COOLER.
* MAX HUMIDITY..........35-40 PERCENT.
* 24 HR TREND.........1 PERCENT DRIER.
* WIND (20 FT)
* PLAINS...............NORTH WINDS 5 TO 15 MPH. GUSTS UP TO 30 MPH
IN THE EVENING.
* CHANCE OF LIGHTNING...1 PERCENT.
* CWR...................ZERO.
SATURDAY
* SKY/WEATHER...........MOSTLY CLOUDY.
* MAX TEMPERATURE.......62-67.
* 24 HR TREND.........UNCHANGED.
* MIN HUMIDITY..........24-29 PERCENT.
* 24 HR TREND.........7 PERCENT WETTER.
* WIND (20 FT)
* PLAINS...............NORTHEAST WINDS 5 TO 15 MPH.
* CHANCE OF LIGHTNING...5 PERCENT.
* CWR...................ZERO.
FORECAST DAYS 3 THROUGH 7...
SATURDAY NIGHT
CLOUDY. NUMEROUS SHOWERS. LOWS 38 TO 43. NORTH
WINDS 15 TO 25 MPH WITH GUSTS TO AROUND 35 MPH.
SUNDAY
COOLER. MOSTLY CLOUDY. SCATTERED SHOWERS AND SNOW
SHOWERS. LOWS 31 TO 36. HIGHS 44 TO 49. NORTH WINDS 15 TO 25 MPH
WITH GUSTS TO AROUND 40 MPH.
MONDAY
MOSTLY CLOUDY. NUMEROUS SNOW SHOWERS AND SHOWERS. LOWS
30 TO 35. HIGHS 38 TO 43. NORTH WINDS 10 TO 20 MPH WITH GUSTS TO
AROUND 35 MPH.
TUESDAY
WARMER. MOSTLY CLOUDY. LOWS 36 TO 41. HIGHS 51 TO 56.
SOUTHWEST WINDS 5 TO 15 MPH.
WEDNESDAY
PARTLY CLOUDY. LOWS 44 TO 49. HIGHS 60 TO 65.
THURSDAY
MOSTLY SUNNY. HIGHS 66 TO 71.
MTZ128-152215-
YELLOWSTONE COUNTY-
127 AM MDT FRI MAY 15 2026
TODAY
* SKY/WEATHER...........MOSTLY SUNNY.
* MAX TEMPERATURE.......69-74.
* 24 HR TREND.........5 DEGREES COOLER.
* MIN HUMIDITY..........14-20 PERCENT.
* 24 HR TREND.........4 PERCENT WETTER.
* WIND (20 FT)
* PLAINS...............WEST WINDS 15 TO 25 MPH WITH GUSTS TO AROUND
30 MPH.
* CHANCE OF LIGHTNING...1 PERCENT.
* CWR...................ZERO.
TONIGHT
* SKY/WEATHER...........PARTLY CLOUDY.
* MIN TEMPERATURE.......44-49.
* 24 HR TREND.........2 DEGREES COOLER.
* MAX HUMIDITY..........39-44 PERCENT.
* 24 HR TREND.........UNCHANGED.
* WIND (20 FT)
* PLAINS...............NORTH WINDS 5 TO 15 MPH.
* CHANCE OF LIGHTNING...2 PERCENT.
* CWR...................ZERO.
SATURDAY
* SKY/WEATHER...........MOSTLY CLOUDY.
* MAX TEMPERATURE.......69-74.
* 24 HR TREND.........UNCHANGED.
* MIN HUMIDITY..........19-24 PERCENT.
* 24 HR TREND.........5 PERCENT WETTER.
* WIND (20 FT)
* PLAINS...............NORTHEAST WINDS 5 TO 15 MPH.
* CHANCE OF LIGHTNING...4 PERCENT.
* CWR...................ZERO.
FORECAST DAYS 3 THROUGH 7...
SATURDAY NIGHT
CLOUDY. NUMEROUS SHOWERS AND ISOLATED
THUNDERSTORMS. LOWS 39 TO 44. NORTH WINDS 15 TO 25 MPH WITH GUSTS
TO AROUND 30 MPH.
SUNDAY
COOLER. MOSTLY CLOUDY. NUMEROUS SHOWERS AND SNOW
SHOWERS. LOWS 32 TO 37. HIGHS 50 TO 55. NORTH WINDS 15 TO 25 MPH
WITH GUSTS TO AROUND 30 MPH.
MONDAY
MOSTLY CLOUDY. NUMEROUS SHOWERS AND SNOW SHOWERS. LOWS
30 TO 35. HIGHS 41 TO 46. NORTH WINDS 5 TO 15 MPH.
TUESDAY
WARMER. MOSTLY CLOUDY. ISOLATED SHOWERS. LOWS 35 TO
40. HIGHS 55 TO 60. WEST WINDS 5 TO 10 MPH.
WEDNESDAY
WARMER. PARTLY CLOUDY. LOWS 42 TO 47. HIGHS 66 TO
71.
THURSDAY
MOSTLY SUNNY. HIGHS 72 TO 77.
MTZ129-152215-
CROW INDIAN RESERVATION/BIGHORN CANYON REC AREA-
127 AM MDT FRI MAY 15 2026
TODAY
* SKY/WEATHER...........SUNNY.
* MAX TEMPERATURE.......59-69 AT 5000 FEET...52-59 AT 7000 FEET.
* 24 HR TREND.........4 DEGREES COOLER.
* MIN HUMIDITY..........20-30 PERCENT AT 5000 FEET...27-34 PERCENT
AT 7000 FEET.
* 24 HR TREND.........6 PERCENT WETTER.
* WIND (20 FT)
* SLOPE/VALLEY.........NORTHWEST WINDS 10 TO 20 MPH.
* RIDGETOP.............NORTHWEST 15 TO 25 MPH.
* CHANCE OF LIGHTNING...1 PERCENT.
* CWR...................ZERO.
TONIGHT
* SKY/WEATHER...........PARTLY CLOUDY.
* MIN TEMPERATURE.......39-46 AT 5000 FEET...37-42 AT 7000 FEET.
* 24 HR TREND.........3 DEGREES COOLER.
* MAX HUMIDITY..........39-44 PERCENT.
* 24 HR TREND.........7 PERCENT WETTER.
* WIND (20 FT)
* SLOPE/VALLEY.........NORTHWEST WINDS 5 TO 15 MPH IN THE EVENING
SHIFTING TO THE EAST 5 TO 10 MPH OVERNIGHT.
* RIDGETOP.............NORTHWEST 10 TO 20 MPH.
* CHANCE OF LIGHTNING...3 PERCENT.
* CWR...................ZERO.
SATURDAY
* SKY/WEATHER...........MOSTLY CLOUDY.
* MAX TEMPERATURE.......60-70 AT 5000 FEET...53-61 AT 7000 FEET.
* 24 HR TREND.........3 DEGREES WARMER.
* MIN HUMIDITY..........18-28 PERCENT AT 5000 FEET...24-29 PERCENT
AT 7000 FEET.
* 24 HR TREND.........UNCHANGED.
* WIND (20 FT)
* SLOPE/VALLEY.........EAST WINDS 5 TO 15 MPH IN THE MORNING
SHIFTING TO THE NORTHWEST IN THE AFTERNOON.
* RIDGETOP.............NORTHWEST 5 TO 15 MPH.
* CHANCE OF LIGHTNING...0 PERCENT.
* CWR...................ZERO.
FORECAST DAYS 3 THROUGH 7...
SATURDAY NIGHT
CLOUDY. SCATTERED SHOWERS. LOWS 35 TO 42.
NORTHWEST WINDS 10 TO 20 MPH WITH GUSTS TO AROUND 30 MPH.
SUNDAY
MUCH COOLER. CLOUDY. SHOWERS AND SNOW SHOWERS. LOWS
27 TO 33. HIGHS 40 TO 50. NORTHWEST WINDS 15 TO 25 MPH WITH GUSTS
TO AROUND 30 MPH.
MONDAY
COLDER. MOSTLY CLOUDY. SNOW SHOWERS. LOWS 26 TO 31.
HIGHS 32 TO 42. NORTHWEST WINDS 5 TO 15 MPH.
TUESDAY
NOT AS COOL. MOSTLY CLOUDY. SCATTERED SNOW SHOWERS.
LOWS 32 TO 37. HIGHS 44 TO 54. SOUTHWEST WINDS 5 TO 10 MPH.
WEDNESDAY
PARTLY CLOUDY. ISOLATED SHOWERS AND THUNDERSTORMS.
LOWS 39 TO 45. HIGHS 54 TO 64.
THURSDAY
MOSTLY SUNNY. ISOLATED SHOWERS. HIGHS 60 TO 70.
MTZ130-152215-
NORTHERN ROSEBUD/NORTHERN TREASURE COUNTIES-
127 AM MDT FRI MAY 15 2026
TODAY
* SKY/WEATHER...........SUNNY.
* MAX TEMPERATURE.......69-74.
* 24 HR TREND.........4 DEGREES COOLER.
* MIN HUMIDITY..........16-21 PERCENT.
* 24 HR TREND.........4 PERCENT WETTER.
* WIND (20 FT)
* PLAINS...............WEST WINDS 10 TO 20 MPH WITH GUSTS TO AROUND
30 MPH.
* CHANCE OF LIGHTNING...1 PERCENT.
* CWR...................ZERO.
TONIGHT
* SKY/WEATHER...........PARTLY CLOUDY.
* MIN TEMPERATURE.......40-45.
* 24 HR TREND.........3 DEGREES COOLER.
* MAX HUMIDITY..........49-54 PERCENT.
* 24 HR TREND.........4 PERCENT WETTER.
* WIND (20 FT)
* PLAINS...............NORTHWEST WINDS 5 TO 15 MPH IN THE EVENING
BECOMING LIGHT OVERNIGHT.
* CHANCE OF LIGHTNING...1 PERCENT.
* CWR...................ZERO.
SATURDAY
* SKY/WEATHER...........PARTLY SUNNY.
* MAX TEMPERATURE.......71-76.
* 24 HR TREND.........2 DEGREES WARMER.
* MIN HUMIDITY..........18-23 PERCENT.
* 24 HR TREND.........2 PERCENT WETTER.
* WIND (20 FT)
* PLAINS...............NORTHEAST WINDS 5 TO 10 MPH.
* CHANCE OF LIGHTNING...0 PERCENT.
* CWR...................ZERO.
FORECAST DAYS 3 THROUGH 7...
SATURDAY NIGHT
CLOUDY. SCATTERED SHOWERS. LOWS 40 TO 45. NORTH
WINDS 10 TO 20 MPH.
SUNDAY
COOLER. MOSTLY CLOUDY. NUMEROUS SHOWERS. LOWS 32 TO 37.
HIGHS 53 TO 58. NORTHWEST WINDS 10 TO 20 MPH.
MONDAY
COLDER. MOSTLY CLOUDY. NUMEROUS SHOWERS. LOWS 30 TO 35.
HIGHS 42 TO 47. NORTH WINDS 5 TO 15 MPH.
TUESDAY
WARMER. MOSTLY CLOUDY. SCATTERED SHOWERS. LOWS 33 TO
38. HIGHS 54 TO 59. NORTH WINDS 5 TO 10 MPH.
WEDNESDAY
WARMER. PARTLY CLOUDY. LOWS 40 TO 45. HIGHS 65 TO
70.
THURSDAY
MOSTLY SUNNY. HIGHS 70 TO 75.
MTZ131-152215-
NORTHERN CHEYENNE INDIAN RESERVATION/ASHLAND RANGER DISTRICT
CUSTER NATL FOREST-
127 AM MDT FRI MAY 15 2026
TODAY
* SKY/WEATHER...........SUNNY.
* MAX TEMPERATURE.......68-73.
* 24 HR TREND.........4 DEGREES COOLER.
* MIN HUMIDITY..........17-22 PERCENT.
* 24 HR TREND.........6 PERCENT WETTER.
* WIND (20 FT)
* SLOPE/VALLEY.........NORTHWEST WINDS 10 TO 20 MPH.
* RIDGETOP.............NORTHWEST 15 TO 25 MPH.
* CHANCE OF LIGHTNING...1 PERCENT.
* CWR...................ZERO.
TONIGHT
* SKY/WEATHER...........MOSTLY CLOUDY.
* MIN TEMPERATURE.......38-43.
* 24 HR TREND.........UNCHANGED.
* MAX HUMIDITY..........48-53 PERCENT.
* 24 HR TREND.........2 PERCENT WETTER.
* WIND (20 FT)
* SLOPE/VALLEY.........NORTHWEST WINDS 5 TO 15 MPH IN THE EVENING
SHIFTING TO THE NORTHEAST 5 TO 10 MPH OVERNIGHT.
* RIDGETOP.............NORTHWEST 10 TO 20 MPH IN THE EVENING
SHIFTING TO THE NORTHEAST 5 TO 10 MPH OVERNIGHT.
* CHANCE OF LIGHTNING...1 PERCENT.
* CWR...................ZERO.
SATURDAY
* SKY/WEATHER...........MOSTLY CLOUDY.
* MAX TEMPERATURE.......73-78.
* 24 HR TREND.........5 DEGREES WARMER.
* MIN HUMIDITY..........14-19 PERCENT.
* 24 HR TREND.........3 PERCENT DRIER.
* WIND (20 FT)
* SLOPE/VALLEY.........SOUTHEAST WINDS 5 TO 15 MPH IN THE MORNING
SHIFTING TO THE WEST IN THE AFTERNOON.
* RIDGETOP.............SOUTHWEST 5 TO 15 MPH.
* CHANCE OF LIGHTNING...0 PERCENT.
* CWR...................ZERO.
FORECAST DAYS 3 THROUGH 7...
SATURDAY NIGHT
MOSTLY CLOUDY. LOWS 40 TO 45. NORTHWEST WINDS
10 TO 20 MPH WITH GUSTS TO AROUND 30 MPH.
SUNDAY
COOLER. MOSTLY CLOUDY. NUMEROUS SHOWERS AND ISOLATED
SNOW SHOWERS. LOWS 30 TO 35. HIGHS 54 TO 59. NORTHWEST WINDS
15 TO 25 MPH WITH GUSTS TO AROUND 30 MPH.
MONDAY
COLDER. MOSTLY CLOUDY. SHOWERS AND SNOW SHOWERS. LOWS
27 TO 32. HIGHS 39 TO 44. NORTHWEST WINDS 5 TO 15 MPH.
TUESDAY
WARMER. MOSTLY CLOUDY. SCATTERED SHOWERS. LOWS 30 TO
35. HIGHS 51 TO 56. NORTHWEST WINDS 5 TO 10 MPH.
WEDNESDAY
WARMER. PARTLY CLOUDY. LOWS 37 TO 42. HIGHS 63 TO
68.
THURSDAY
MOSTLY SUNNY. HIGHS 70 TO 75.
MTZ132-152215-
CUSTER COUNTY-
127 AM MDT FRI MAY 15 2026
TODAY
* SKY/WEATHER...........SUNNY.
* MAX TEMPERATURE.......67-72.
* 24 HR TREND.........2 DEGREES COOLER.
* MIN HUMIDITY..........16-22 PERCENT.
* 24 HR TREND.........UNCHANGED.
* WIND (20 FT)
* PLAINS...............WEST WINDS 15 TO 25 MPH WITH GUSTS TO AROUND
35 MPH.
* CHANCE OF LIGHTNING...0 PERCENT.
* CWR...................ZERO.
TONIGHT
* SKY/WEATHER...........PARTLY CLOUDY.
* MIN TEMPERATURE.......40-45.
* 24 HR TREND.........4 DEGREES COOLER.
* MAX HUMIDITY..........48-53 PERCENT.
* 24 HR TREND.........7 PERCENT WETTER.
* WIND (20 FT)
* PLAINS...............WEST WINDS 5 TO 15 MPH. GUSTS UP TO 25
MPH IN THE EVENING.
* CHANCE OF LIGHTNING...1 PERCENT.
* CWR...................ZERO.
SATURDAY
* SKY/WEATHER...........PARTLY SUNNY.
* MAX TEMPERATURE.......71-76.
* 24 HR TREND.........4 DEGREES WARMER.
* MIN HUMIDITY..........19-24 PERCENT.
* 24 HR TREND.........3 PERCENT WETTER.
* WIND (20 FT)
* PLAINS...............SOUTHEAST WINDS 5 TO 15 MPH.
* CHANCE OF LIGHTNING...0 PERCENT.
* CWR...................ZERO.
FORECAST DAYS 3 THROUGH 7...
SATURDAY NIGHT
CLOUDY. SCATTERED SHOWERS. LOWS 44 TO 49. EAST
WINDS 10 TO 20 MPH WITH GUSTS TO AROUND 30 MPH.
SUNDAY
COOLER. MOSTLY CLOUDY. SCATTERED SHOWERS AND SNOW
SHOWERS. LOWS 32 TO 37. HIGHS 53 TO 58. NORTHWEST WINDS 10 TO
20 MPH WITH GUSTS TO AROUND 30 MPH.
MONDAY
COLDER. MOSTLY CLOUDY. SHOWERS AND SCATTERED SNOW
SHOWERS. LOWS 29 TO 34. HIGHS 39 TO 44. NORTH WINDS 5 TO 15 MPH.
TUESDAY
MOSTLY CLOUDY. SCATTERED SHOWERS. LOWS 32 TO 37. HIGHS
49 TO 54. NORTH WINDS 5 TO 10 MPH.
WEDNESDAY
WARMER. PARTLY CLOUDY. LOWS 40 TO 45. HIGHS 61 TO
66.
THURSDAY
MOSTLY SUNNY. HIGHS 68 TO 73.
MTZ133-152215-
SIOUX RANGER DISTRICT CUSTER NATIONAL FOREST-
127 AM MDT FRI MAY 15 2026
TODAY
* SKY/WEATHER...........SUNNY.
* MAX TEMPERATURE.......69-74.
* 24 HR TREND.........2 DEGREES COOLER.
* MIN HUMIDITY..........18-23 PERCENT.
* 24 HR TREND.........4 PERCENT WETTER.
* WIND (20 FT)
* PLAINS...............WEST WINDS 15 TO 25 MPH WITH GUSTS TO AROUND
35 MPH.
* CHANCE OF LIGHTNING...0 PERCENT.
* CWR...................ZERO.
TONIGHT
* SKY/WEATHER...........PARTLY CLOUDY.
* MIN TEMPERATURE.......39-44.
* 24 HR TREND.........2 DEGREES COOLER.
* MAX HUMIDITY..........50-55 PERCENT.
* 24 HR TREND.........6 PERCENT WETTER.
* WIND (20 FT)
* PLAINS...............NORTHWEST WINDS 10 TO 20 MPH WITH GUSTS TO
AROUND 30 MPH IN THE EVENING DECREASING TO 5 TO 10 MPH
OVERNIGHT.
* CHANCE OF LIGHTNING...1 PERCENT.
* CWR...................ZERO.
SATURDAY
* SKY/WEATHER...........PARTLY SUNNY.
* MAX TEMPERATURE.......75-80.
* 24 HR TREND.........6 DEGREES WARMER.
* MIN HUMIDITY..........19-25 PERCENT.
* 24 HR TREND.........1 PERCENT WETTER.
* WIND (20 FT)
* PLAINS...............SOUTHEAST WINDS 10 TO 20 MPH. GUSTS UP TO
25 MPH IN THE AFTERNOON.
* CHANCE OF LIGHTNING...0 PERCENT.
* CWR...................ZERO.
FORECAST DAYS 3 THROUGH 7...
SATURDAY NIGHT
CLOUDY. SCATTERED SHOWERS. LOWS 44 TO 49. EAST
WINDS 15 TO 25 MPH WITH GUSTS TO AROUND 35 MPH.
SUNDAY
COOLER. MOSTLY CLOUDY. SCATTERED SHOWERS. LOWS 32 TO
37. HIGHS 58 TO 63. NORTHWEST WINDS 15 TO 25 MPH WITH GUSTS TO
AROUND 30 MPH.
MONDAY
COLDER, CLOUDY. SHOWERS AND SCATTERED SNOW SHOWERS.
LOWS 28 TO 33. HIGHS 39 TO 44. NORTHWEST WINDS 10 TO 20 MPH WITH
GUSTS TO AROUND 30 MPH.
TUESDAY
MOSTLY CLOUDY. SCATTERED SHOWERS. LOWS 30 TO 35. HIGHS
48 TO 53. NORTH WINDS 5 TO 15 MPH.
WEDNESDAY
WARMER. PARTLY CLOUDY. ISOLATED SHOWERS. LOWS 38 TO
43. HIGHS 61 TO 66.
THURSDAY
MOSTLY SUNNY. HIGHS 68 TO 73.
WYZ274-152215-
SHERIDAN COUNTY-
127 AM MDT FRI MAY 15 2026
TODAY
* SKY/WEATHER...........SUNNY.
* MAX TEMPERATURE.......66-71.
* 24 HR TREND.........6 DEGREES COOLER.
* MIN HUMIDITY..........24-29 PERCENT.
* 24 HR TREND.........10 PERCENT WETTER.
* WIND (20 FT)
* SLOPE/VALLEY.........NORTHWEST WINDS 5 TO 15 MPH.
* RIDGETOP.............NORTH 10 TO 20 MPH.
* CHANCE OF LIGHTNING...2 PERCENT.
* CWR...................ZERO.
TONIGHT
* SKY/WEATHER...........PARTLY CLOUDY.
* MIN TEMPERATURE.......34-39.
* 24 HR TREND.........2 DEGREES COOLER.
* MAX HUMIDITY..........62-67 PERCENT.
* 24 HR TREND.........8 PERCENT WETTER.
* WIND (20 FT)
* SLOPE/VALLEY.........WEST WINDS 5 TO 10 MPH IN THE EVENING
BECOMING LIGHT OVERNIGHT.
* RIDGETOP.............NORTHWEST 10 TO 20 MPH.
* CHANCE OF LIGHTNING...3 PERCENT.
* CWR...................ZERO.
SATURDAY
* SKY/WEATHER...........MOSTLY CLOUDY.
* MAX TEMPERATURE.......70-75.
* 24 HR TREND.........4 DEGREES WARMER.
* MIN HUMIDITY..........19-24 PERCENT.
* 24 HR TREND.........5 PERCENT DRIER.
* WIND (20 FT)
* SLOPE/VALLEY.........LIGHT WINDS IN THE MORNING BECOMING NORTH 5
TO 10 MPH IN THE AFTERNOON.
* RIDGETOP.............NORTH 5 TO 10 MPH.
* CHANCE OF LIGHTNING...0 PERCENT.
* CWR...................ZERO.
FORECAST DAYS 3 THROUGH 7...
SATURDAY NIGHT
MOSTLY CLOUDY. ISOLATED SHOWERS. LOWS 35 TO 40.
NORTHWEST WINDS 10 TO 20 MPH WITH GUSTS TO AROUND 35 MPH.
SUNDAY
MUCH COOLER. MOSTLY CLOUDY. SHOWERS AND SNOW SHOWERS.
LOWS 27 TO 32. HIGHS 50 TO 55. NORTHWEST WINDS 15 TO 25 MPH WITH
GUSTS TO AROUND 40 MPH.
MONDAY
COLDER. MOSTLY CLOUDY. SNOW SHOWERS AND SHOWERS. LOWS
24 TO 29. HIGHS 37 TO 42. NORTHWEST WINDS 10 TO 20 MPH WITH GUSTS
TO AROUND 30 MPH.
TUESDAY
WARMER. MOSTLY CLOUDY. SCATTERED SHOWERS AND SNOW
SHOWERS. LOWS 27 TO 32. HIGHS 49 TO 54. WEST WINDS 5 TO 10 MPH.
WEDNESDAY
WARMER. PARTLY CLOUDY. ISOLATED SHOWERS AND
THUNDERSTORMS. LOWS 32 TO 37. HIGHS 60 TO 65.
THURSDAY
WARMER. MOSTLY SUNNY. ISOLATED SHOWERS AND
THUNDERSTORMS. HIGHS 68 TO 73.
WYZ284-152215-
BIGHORN NATIONAL FOREST-
127 AM MDT FRI MAY 15 2026
TODAY
* SKY/WEATHER...........SUNNY.
* MAX TEMPERATURE.......52-57.
* 24 HR TREND.........2 DEGREES COOLER.
* MIN HUMIDITY..........21-26 PERCENT.
* 24 HR TREND.........8 PERCENT WETTER.
* WIND (20 FT)
* AT BURGESS JCT.......WEST WINDS 10 TO 20 MPH WITH GUSTS TO AROUND
40 MPH.
* CHANCE OF LIGHTNING...4 PERCENT.
* CWR...................ZERO.
TONIGHT
* SKY/WEATHER...........PARTLY CLOUDY.
* MIN TEMPERATURE.......29-34.
* 24 HR TREND.........2 DEGREES COOLER.
* MAX HUMIDITY..........50-55 PERCENT.
* 24 HR TREND.........2 PERCENT DRIER.
* WIND (20 FT)
* AT BURGESS JCT.......NORTHWEST WINDS 5 TO 15 MPH IN THE EVENING
SHIFTING TO THE SOUTH 5 TO 10 MPH OVERNIGHT.
* CHANCE OF LIGHTNING...4 PERCENT.
* CWR...................ZERO.
SATURDAY
* SKY/WEATHER...........MOSTLY CLOUDY.
* MAX TEMPERATURE.......53-58.
* 24 HR TREND.........1 DEGREE WARMER.
* MIN HUMIDITY..........18-23 PERCENT.
* 24 HR TREND.........3 PERCENT DRIER.
* WIND (20 FT)
* AT BURGESS JCT.......SOUTHWEST WINDS 10 TO 20 MPH. GUSTS UP TO 30
MPH IN THE AFTERNOON.
* CHANCE OF LIGHTNING...0 PERCENT.
* CWR...................ZERO.
FORECAST DAYS 3 THROUGH 7...
SATURDAY NIGHT
CLOUDY. SCATTERED SHOWERS AND SNOW SHOWERS.
LOWS 26 TO 31. NORTHWEST WINDS 5 TO 15 MPH.
SUNDAY
COLDER, CLOUDY. SNOW SHOWERS. LOWS 18 TO 23. HIGHS
35 TO 40. NORTHWEST WINDS 10 TO 20 MPH WITH GUSTS TO AROUND
30 MPH.
MONDAY
MOSTLY CLOUDY. SNOW SHOWERS AND ISOLATED THUNDERSTORMS.
LOWS 14 TO 19. HIGHS 26 TO 31. NORTHWEST WINDS 10 TO 20 MPH WITH
GUSTS TO AROUND 30 MPH.
TUESDAY
MOSTLY CLOUDY. SCATTERED SNOW SHOWERS AND ISOLATED
THUNDERSTORMS. LOWS 19 TO 24. HIGHS 36 TO 41. WEST WINDS 5 TO
15 MPH.
WEDNESDAY
PARTLY CLOUDY. SCATTERED SNOW SHOWERS AND ISOLATED
THUNDERSTORMS. LOWS 27 TO 32. HIGHS 45 TO 50.
THURSDAY
MOSTLY SUNNY. ISOLATED SHOWERS, THUNDERSTORMS AND
SNOW SHOWERS. HIGHS 52 TO 57.
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