Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS Billings, MT
Issued by NWS Billings, MT
895 FNUS55 KBYZ 261902 FWFBYZ Fire Weather Planning Forecast for SCen and SErn Montana National Weather Service Billings MT 102 PM MDT Sat Sep 26 2026 .DISCUSSION... Conditions will be calm and seasonable today with increasing chances for showers into Sunday, but CWRs will be low during the day. Into the evening and overnight hours, isolated showers and thunderstorms are expected mainly for southeast MT and NW SD. Locally heavy rain is possible under any stronger thunderstorms as well as small hail and gusty winds. As westerly flow builds in aloft Tuesday through Thursday, dryer (Min RHs 20-30%) and breezy conditions will persist. TS MTZ123-271030- Gallatin National Forest- 102 PM MDT Sat Sep 26 2026 .Tonight... * Sky/weather...........Mostly cloudy. * Min temperature.......34-44 at 5000 feet...32-42 at 7000 feet. * 24 hr trend.........Unchanged. * Max humidity..........52-57 percent. * 24 hr trend.........28 percent drier. * Wind (20 ft) * Slope/valley.........North winds 5 to 10 mph in the evening becoming light overnight. * Ridgetop.............Southwest 5 to 15 mph. * Chance of lightning...1 percent. * CWR...................Zero. .SUNDAY... * Sky/weather...........Mostly cloudy. * Max temperature.......60-70 at 5000 feet...50-60 at 7000 feet. * 24 hr trend.........1 degree warmer. * Min humidity..........35-40 percent. * 24 hr trend.........5 percent wetter. * Wind (20 ft) * Slope/valley.........South winds 5 to 10 mph in the morning shifting to the northwest in the afternoon. * Ridgetop.............Southwest 10 to 20 mph. * Chance of lightning...6 percent. * CWR...................Zero. .SUNDAY NIGHT... * Sky/weather...........Mostly cloudy. Isolated rain showers overnight. * Min temperature.......36-46 at 5000 feet...34-44 at 7000 feet. * 24 hr trend.........3 degrees warmer. * Max humidity..........66-71 percent. * 24 hr trend.........14 percent wetter. * Wind (20 ft) * Slope/valley.........Light winds. * Ridgetop.............South 5 to 15 mph. * Chance of lightning...6 percent. * CWR...................Less than 10 percent. .MONDAY... * Sky/weather...........Partly sunny. Scattered rain showers in the afternoon. * Max temperature.......61-69 at 5000 feet...49-59 at 7000 feet. * 24 hr trend.........2 degrees cooler. * Min humidity..........42-52 percent at 5000 feet...46-56 percent at 7000 feet. * 24 hr trend.........7 percent wetter. * Wind (20 ft) * Slope/valley.........Light winds in the morning becoming northwest 5 to 10 mph in the afternoon. * Ridgetop.............West 5 to 10 mph. * Chance of lightning...14 percent. * CWR...................Less than 10 percent. .Forecast days 3 through 7...... .MONDAY NIGHT...Mostly clear. Lows 35 to 45. South winds 5 to 10 mph. .TUESDAY...Mostly clear. Lows 40 to 50. Highs 66 to 75. Southwest winds 5 to 10 mph. .WEDNESDAY...Mostly clear. Lows 37 to 47. Highs 66 to 76. Southwest winds 5 to 10 mph. .THURSDAY...Mostly clear. Lows 38 to 48. Highs 65 to 75. Southwest winds 5 to 10 mph. .FRIDAY...Partly cloudy. Lows 36 to 46. Highs 65 to 75. .SATURDAY...Mostly sunny. Highs 58 to 68. $$ MTZ124-271030- Wheatland County/Sweet Grass County- 102 PM MDT Sat Sep 26 2026 .Tonight... * Sky/weather...........Partly cloudy. * Min temperature.......36-41. * 24 hr trend.........5 degrees cooler. * Max humidity..........48-53 percent. * 24 hr trend.........17 percent drier. * Wind (20 ft) * Plains...............Northwest winds 5 to 15 mph. Gusts up to 30 mph in the evening. * Chance of lightning...1 percent. * CWR...................Zero. .SUNDAY... * Sky/weather...........Mostly cloudy. * Max temperature.......58-63. * 24 hr trend.........7 degrees cooler. * Min humidity..........27-32 percent. * 24 hr trend.........5 percent wetter. * Wind (20 ft) * Plains...............Southeast winds 5 to 15 mph. * Chance of lightning...0 percent. * CWR...................Zero. .SUNDAY NIGHT... * Sky/weather...........Mostly cloudy. * Min temperature.......40-45. * 24 hr trend.........4 degrees warmer. * Max humidity..........70-75 percent. * 24 hr trend.........22 percent wetter. * Wind (20 ft) * Plains...............Northeast winds 5 to 10 mph in the evening shifting to the west 5 to 15 mph overnight. * Chance of lightning...2 percent. * CWR...................Zero. .MONDAY... * Sky/weather...........Mostly cloudy in the morning then clearing. * Max temperature.......67-72. * 24 hr trend.........9 degrees warmer. * Min humidity..........27-32 percent. * 24 hr trend.........Unchanged. * Wind (20 ft) * Plains...............West winds 5 to 15 mph. * Chance of lightning...3 percent. * CWR...................Zero. .Forecast days 3 through 7...... .MONDAY NIGHT...Mostly clear. Lows 39 to 44. West winds 5 to 15 mph. .TUESDAY...Mostly clear. Lows 44 to 49. Highs 71 to 76. West winds 10 to 20 mph with gusts to around 30 mph. .WEDNESDAY...Mostly clear. Lows 41 to 46. Highs 70 to 75. Northwest winds 10 to 20 mph with gusts to around 35 mph. .THURSDAY...Mostly clear. Lows 41 to 46. Highs 66 to 71. South winds 5 to 15 mph. .FRIDAY...Partly cloudy. Lows 40 to 45. Highs 67 to 72. .SATURDAY...Mostly sunny. Highs 59 to 64. $$ MTZ125-271030- Stillwater County- 102 PM MDT Sat Sep 26 2026 .Tonight... * Sky/weather...........Partly cloudy. * Min temperature.......41-46. * 24 hr trend.........3 degrees cooler. * Max humidity..........52-57 percent. * 24 hr trend.........17 percent drier. * Wind (20 ft) * Plains...............North winds 5 to 10 mph in the evening becoming light overnight. * Chance of lightning...2 percent. * CWR...................Zero. .SUNDAY... * Sky/weather...........Partly sunny with isolated rain showers. * Max temperature.......59-64. * 24 hr trend.........6 degrees cooler. * Min humidity..........33-38 percent. * 24 hr trend.........Unchanged. * Wind (20 ft) * Plains...............Light winds in the morning becoming northeast 5 to 10 mph in the afternoon. * Chance of lightning...6 percent. * CWR...................Less than 10 percent. .SUNDAY NIGHT... * Sky/weather...........Cloudy. Isolated rain showers in the evening. * Min temperature.......42-47. * 24 hr trend.........1 degree warmer. * Max humidity..........69-74 percent. * 24 hr trend.........17 percent wetter. * Wind (20 ft) * Plains...............West winds 5 to 10 mph. * Chance of lightning...6 percent. * CWR...................Less than 10 percent. .MONDAY... * Sky/weather...........Mostly cloudy. Isolated rain showers in the morning, then numerous rain showers and isolated thunderstorms in the afternoon. * Max temperature.......64-69. * 24 hr trend.........5 degrees warmer. * Min humidity..........42-47 percent. * 24 hr trend.........9 percent wetter. * Wind (20 ft) * Plains...............Southwest winds 5 to 10 mph in the morning shifting to the north in the afternoon. * Chance of lightning...18 percent. * CWR...................20 percent. .Forecast days 3 through 7...... .MONDAY NIGHT...Mostly clear. Lows 40 to 45. Southwest winds 5 to 10 mph. .TUESDAY...Mostly clear. Lows 45 to 50. Highs 70 to 75. South winds 5 to 10 mph. .WEDNESDAY...Mostly clear. Lows 43 to 48. Highs 72 to 77. Northwest winds 5 to 10 mph. .THURSDAY...Mostly clear. Lows 43 to 48. Highs 67 to 72. South winds 5 to 10 mph. .FRIDAY...Partly cloudy. Isolated showers. Lows 41 to 46. Highs 68 to 73. .SATURDAY...Mostly sunny. Isolated showers. Highs 60 to 65. $$ MTZ126-271030- Beartooth Ranger District Custer National Forest- 102 PM MDT Sat Sep 26 2026 .Tonight... * Sky/weather...........Mostly cloudy. * Min temperature.......42-49 at 5000 feet...35-45 at 7000 feet. * 24 hr trend.........2 degrees cooler. * Max humidity..........43-53 percent at 5000 feet...54-64 percent at 7000 feet. * 24 hr trend.........11 percent drier. * Wind (20 ft) * Slope/valley.........Northwest winds 5 to 10 mph. * Ridgetop.............Southwest 10 to 20 mph. * Chance of lightning...1 percent. * CWR...................Zero. .SUNDAY... * Sky/weather...........Mostly cloudy with isolated rain showers. * Max temperature.......59-67 at 5000 feet...53-63 at 7000 feet. * 24 hr trend.........5 degrees cooler. * Min humidity..........32-42 percent at 5000 feet...38-48 percent at 7000 feet. * 24 hr trend.........7 percent wetter. * Wind (20 ft) * Slope/valley.........Southwest winds 5 to 10 mph in the morning shifting to the east in the afternoon. * Ridgetop.............Southwest 15 to 25 mph. * Chance of lightning...8 percent. * CWR...................Less than 10 percent. .SUNDAY NIGHT... * Sky/weather...........Mostly cloudy with isolated rain showers. * Min temperature.......43-51 at 5000 feet...38-48 at 7000 feet. * 24 hr trend.........3 degrees warmer. * Max humidity..........60-70 percent at 5000 feet...64-74 percent at 7000 feet. * 24 hr trend.........9 percent wetter. * Wind (20 ft) * Slope/valley.........Southwest winds 5 to 10 mph. * Ridgetop.............Southwest 10 to 20 mph. * Chance of lightning...7 percent. * CWR...................Less than 10 percent. .MONDAY... * Sky/weather...........Cloudy. Scattered rain showers in the morning, then rain showers and isolated thunderstorms in the afternoon. * Max temperature.......60-66 at 5000 feet...52-62 at 7000 feet. * 24 hr trend.........1 degree cooler. * Min humidity..........42-52 percent at 5000 feet...50-60 percent at 7000 feet. * 24 hr trend.........13 percent wetter. * Wind (20 ft) * Slope/valley.........West winds 5 to 10 mph in the morning shifting to the north in the afternoon. * Ridgetop.............Southwest 10 to 20 mph. * Chance of lightning...21 percent. * CWR...................40 percent. .Forecast days 3 through 7...... .MONDAY NIGHT...Partly cloudy. Scattered showers. Lows 41 to 48. West winds 5 to 10 mph. .TUESDAY...Mostly clear. Lows 46 to 52. Highs 63 to 72. Southwest winds 5 to 15 mph. .WEDNESDAY...Mostly clear. Lows 44 to 50. Highs 66 to 73. Northwest winds 5 to 15 mph. .THURSDAY...Mostly clear. Lows 44 to 51. Highs 64 to 70. South winds 5 to 10 mph. .FRIDAY...Partly cloudy. Isolated showers and snow showers. Lows 42 to 49. Highs 64 to 71. .SATURDAY...Mostly sunny. Isolated showers and snow showers. Highs 56 to 62. $$ MTZ127-271030- Golden Valley County/Musselshell county- 102 PM MDT Sat Sep 26 2026 .Tonight... * Sky/weather...........Partly cloudy. * Min temperature.......43-48. * 24 hr trend.........3 degrees cooler. * Max humidity..........42-47 percent. * 24 hr trend.........30 percent drier. * Wind (20 ft) * Plains...............North winds 5 to 15 mph. * Chance of lightning...1 percent. * CWR...................Zero. .SUNDAY... * Sky/weather...........Mostly cloudy. Isolated rain showers in the afternoon. * Max temperature.......56-61. * 24 hr trend.........7 degrees cooler. * Min humidity..........37-42 percent. * 24 hr trend.........6 percent wetter. * Wind (20 ft) * Plains...............East winds 5 to 15 mph. * Chance of lightning...3 percent. * CWR...................Less than 10 percent. .SUNDAY NIGHT... * Sky/weather...........Mostly cloudy. Isolated rain showers in the evening. * Min temperature.......44-49. * 24 hr trend.........1 degree warmer. * Max humidity..........62-67 percent. * 24 hr trend.........20 percent wetter. * Wind (20 ft) * Plains...............Northeast winds 5 to 10 mph in the evening shifting to the northwest overnight. * Chance of lightning...3 percent. * CWR...................Less than 10 percent. .MONDAY... * Sky/weather...........Cloudy in the morning then becoming partly sunny. * Max temperature.......62-67. * 24 hr trend.........6 degrees warmer. * Min humidity..........40-45 percent. * 24 hr trend.........3 percent wetter. * Wind (20 ft) * Plains...............West winds 5 to 10 mph. * Chance of lightning...4 percent. * CWR...................Zero. .Forecast days 3 through 7...... .MONDAY NIGHT...Mostly clear. Lows 44 to 49. South winds 5 to 10 mph. .TUESDAY...Mostly clear. Lows 49 to 54. Highs 67 to 72. West winds 5 to 15 mph. .WEDNESDAY...Mostly clear. Lows 46 to 51. Highs 67 to 72. Northwest winds 5 to 15 mph. .THURSDAY...Mostly clear. Lows 45 to 50. Highs 61 to 66. East winds 5 to 10 mph. .FRIDAY...Partly cloudy. Lows 44 to 49. Highs 63 to 68. .SATURDAY...Mostly sunny. Highs 54 to 59. $$ MTZ128-271030- Yellowstone County- 102 PM MDT Sat Sep 26 2026 .Tonight... * Sky/weather...........Mostly cloudy. * Min temperature.......44-49. * 24 hr trend.........6 degrees cooler. * Max humidity..........45-50 percent. * 24 hr trend.........11 percent drier. * Wind (20 ft) * Plains...............Northeast winds 5 to 15 mph. * Chance of lightning...1 percent. * CWR...................Zero. .SUNDAY... * Sky/weather...........Mostly cloudy with isolated rain showers. * Max temperature.......62-67. * 24 hr trend.........5 degrees cooler. * Min humidity..........35-40 percent. * 24 hr trend.........Unchanged. * Wind (20 ft) * Plains...............Northeast winds 5 to 15 mph. * Chance of lightning...4 percent. * CWR...................Less than 10 percent. .SUNDAY NIGHT... * Sky/weather...........Cloudy. Isolated rain showers in the evening. * Min temperature.......45-50. * 24 hr trend.........1 degree warmer. * Max humidity..........68-73 percent. * 24 hr trend.........23 percent wetter. * Wind (20 ft) * Plains...............Northeast winds 5 to 10 mph in the evening shifting to the west overnight. * Chance of lightning...4 percent. * CWR...................Less than 10 percent. .MONDAY... * Sky/weather...........Cloudy in the morning then becoming partly sunny. * Max temperature.......66-71. * 24 hr trend.........4 degrees warmer. * Min humidity..........42-47 percent. * 24 hr trend.........7 percent wetter. * Wind (20 ft) * Plains...............West winds 5 to 10 mph. * Chance of lightning...4 percent. * CWR...................Zero. .Forecast days 3 through 7...... .MONDAY NIGHT...Partly cloudy. Lows 44 to 49. South winds 5 to 10 mph. .TUESDAY...Mostly clear. Lows 48 to 53. Highs 72 to 77. Southwest winds 5 to 15 mph. .WEDNESDAY...Mostly clear. Lows 46 to 51. Highs 73 to 78. Northwest winds 5 to 10 mph. .THURSDAY...Mostly clear. Lows 46 to 51. Highs 68 to 73. Northeast winds 5 to 10 mph. .FRIDAY...Partly cloudy. Lows 44 to 49. Highs 68 to 73. .SATURDAY...Mostly sunny. Highs 60 to 65. $$ MTZ129-271030- Crow Indian Reservation/Bighorn Canyon Rec Area- 102 PM MDT Sat Sep 26 2026 .Tonight... * Sky/weather...........Partly cloudy. * Min temperature.......41-49 at 5000 feet...40-45 at 7000 feet. * 24 hr trend.........3 degrees cooler. * Max humidity..........48-53 percent. * 24 hr trend.........13 percent drier. * Wind (20 ft) * Slope/valley.........Northeast winds 5 to 10 mph. * Ridgetop.............Southwest 15 to 30 mph. * Chance of lightning...1 percent. * CWR...................Zero. .SUNDAY... * Sky/weather...........Partly sunny. Isolated rain showers in the morning. * Max temperature.......58-68 at 5000 feet...54-60 at 7000 feet. * 24 hr trend.........3 degrees cooler. * Min humidity..........32-42 percent at 5000 feet...39-47 percent at 7000 feet. * 24 hr trend.........7 percent wetter. * Wind (20 ft) * Slope/valley.........East winds 5 to 15 mph. * Ridgetop.............Southwest 15 to 25 mph. * Chance of lightning...2 percent. * CWR...................Less than 10 percent. .SUNDAY NIGHT... * Sky/weather...........Cloudy with isolated rain showers. * Min temperature.......46-51. * 24 hr trend.........3 degrees warmer. * Max humidity..........64-74 percent at 5000 feet...61-69 percent at 7000 feet. * 24 hr trend.........25 percent wetter. * Wind (20 ft) * Slope/valley.........East winds 5 to 10 mph in the evening shifting to the southwest overnight. * Ridgetop.............Southwest 15 to 25 mph. * Chance of lightning...6 percent. * CWR...................10 percent. .MONDAY... * Sky/weather...........Mostly cloudy. Isolated rain showers in the afternoon. * Max temperature.......58-68 at 5000 feet...52-58 at 7000 feet. * 24 hr trend.........2 degrees cooler. * Min humidity..........42-52 percent at 5000 feet...54-64 percent at 7000 feet. * 24 hr trend.........9 percent wetter. * Wind (20 ft) * Slope/valley.........Northwest winds 5 to 10 mph. * Ridgetop.............West 10 to 20 mph. * Chance of lightning...8 percent. * CWR...................Less than 10 percent. .Forecast days 3 through 7...... .MONDAY NIGHT...Partly cloudy. Lows 43 to 48. Southwest winds 5 to 10 mph. .TUESDAY...Mostly clear. Lows 47 to 53. Highs 63 to 73. South winds 5 to 10 mph. .WEDNESDAY...Mostly clear. Lows 45 to 50. Highs 65 to 75. North winds 5 to 10 mph. .THURSDAY...Mostly clear. Lows 46 to 52. Highs 62 to 72. Southeast winds 5 to 10 mph. .FRIDAY...Partly cloudy. Lows 43 to 48. Highs 62 to 72. .SATURDAY...Mostly sunny. Isolated showers. Highs 53 to 63. $$ MTZ130-271030- Northern Rosebud/Northern Treasure Counties- 102 PM MDT Sat Sep 26 2026 .Tonight... * Sky/weather...........Partly cloudy. * Min temperature.......41-46. * 24 hr trend.........7 degrees cooler. * Max humidity..........49-54 percent. * 24 hr trend.........32 percent drier. * Wind (20 ft) * Plains...............North winds 5 to 10 mph. * Chance of lightning...1 percent. * CWR...................Zero. .SUNDAY... * Sky/weather...........Mostly cloudy with isolated rain showers. * Max temperature.......64-69. * 24 hr trend.........3 degrees cooler. * Min humidity..........29-34 percent. * 24 hr trend.........Unchanged. * Wind (20 ft) * Plains...............East winds 5 to 15 mph. * Chance of lightning...1 percent. * CWR...................Less than 10 percent. .SUNDAY NIGHT... * Sky/weather...........Cloudy with isolated rain showers. * Min temperature.......46-51. * 24 hr trend.........5 degrees warmer. * Max humidity..........94-99 percent. * 24 hr trend.........45 percent wetter. * Wind (20 ft) * Plains...............Northeast winds 5 to 10 mph. * Chance of lightning...4 percent. * CWR...................Less than 10 percent. .MONDAY... * Sky/weather...........Mostly cloudy. Patchy fog in the morning. * Max temperature.......66-71. * 24 hr trend.........2 degrees warmer. * Min humidity..........43-48 percent. * 24 hr trend.........14 percent wetter. * Wind (20 ft) * Plains...............Northwest winds 5 to 10 mph. * Chance of lightning...2 percent. * CWR...................Zero. .Forecast days 3 through 7...... .MONDAY NIGHT...Partly cloudy. Lows 44 to 49. West winds 5 to 10 mph. .TUESDAY...Mostly clear. Lows 47 to 52. Highs 72 to 77. Southwest winds 5 to 10 mph. .WEDNESDAY...Mostly clear. Lows 45 to 50. Highs 72 to 77. Northwest winds 5 to 10 mph. .THURSDAY...Mostly clear. Lows 45 to 50. Highs 67 to 72. East winds 5 to 10 mph. .FRIDAY...Partly cloudy. Lows 44 to 49. Highs 67 to 72. .SATURDAY...Mostly sunny. Highs 60 to 65. $$ MTZ131-271030- Northern Cheyenne Indian Reservation/Ashland Ranger District Custer Natl Forest- 102 PM MDT Sat Sep 26 2026 .Tonight... * Sky/weather...........Partly cloudy. * Min temperature.......41-46. * 24 hr trend.........9 degrees cooler. * Max humidity..........53-58 percent. * 24 hr trend.........19 percent drier. * Wind (20 ft) * Slope/valley.........North winds 5 to 10 mph. * Ridgetop.............Northeast 10 to 20 mph. * Chance of lightning...1 percent. * CWR...................Zero. .SUNDAY... * Sky/weather...........Partly sunny. Isolated rain showers in the morning. * Max temperature.......68-73. * 24 hr trend.........1 degree cooler. * Min humidity..........32-37 percent. * 24 hr trend.........8 percent wetter. * Wind (20 ft) * Slope/valley.........East winds 5 to 15 mph. * Ridgetop.............East 10 to 20 mph. * Chance of lightning...2 percent. * CWR...................Less than 10 percent. .SUNDAY NIGHT... * Sky/weather...........Cloudy with scattered rain showers. * Min temperature.......46-51. * 24 hr trend.........5 degrees warmer. * Max humidity..........90-95 percent. * 24 hr trend.........37 percent wetter. * Wind (20 ft) * Slope/valley.........East winds 5 to 15 mph in the evening shifting to the southwest 5 to 10 mph overnight. * Ridgetop.............Southeast 10 to 20 mph. * Chance of lightning...11 percent. * CWR...................30 percent. .MONDAY... * Sky/weather...........Mostly cloudy with isolated rain showers. * Max temperature.......66-71. * 24 hr trend.........2 degrees cooler. * Min humidity..........43-48 percent. * 24 hr trend.........11 percent wetter. * Wind (20 ft) * Slope/valley.........Northwest winds 5 to 10 mph. * Ridgetop.............Northwest 10 to 15 mph. * Chance of lightning...4 percent. * CWR...................Less than 10 percent. .Forecast days 3 through 7...... .MONDAY NIGHT...Partly cloudy. Patchy fog. Lows 43 to 48. West winds 5 to 10 mph. .TUESDAY...Mostly clear. Lows 45 to 50. Highs 71 to 76. Southwest winds 5 to 10 mph. .WEDNESDAY...Mostly clear. Lows 44 to 49. Highs 74 to 79. North winds 5 to 10 mph. .THURSDAY...Mostly clear. Lows 44 to 49. Highs 70 to 75. Southeast winds 5 to 10 mph. .FRIDAY...Partly cloudy. Lows 42 to 47. Highs 71 to 76. .SATURDAY...Mostly sunny. Highs 61 to 66. $$ MTZ132-271030- Custer County- 102 PM MDT Sat Sep 26 2026 .Tonight... * Sky/weather...........Partly cloudy. * Min temperature.......44-49. * 24 hr trend.........8 degrees cooler. * Max humidity..........44-49 percent. * 24 hr trend.........44 percent drier. * Wind (20 ft) * Plains...............North winds 5 to 10 mph. * Chance of lightning...1 percent. * CWR...................Zero. .SUNDAY... * Sky/weather...........Mostly cloudy with isolated rain showers. * Max temperature.......64-69. * 24 hr trend.........1 degree cooler. * Min humidity..........28-33 percent. * 24 hr trend.........4 percent wetter. * Wind (20 ft) * Plains...............East winds 5 to 15 mph. * Chance of lightning...0 percent. * CWR...................Less than 10 percent. .SUNDAY NIGHT... * Sky/weather...........Cloudy. Isolated showers and thunderstorms in the evening, then scattered rain showers and isolated thunderstorms overnight. * Min temperature.......49-54. * 24 hr trend.........5 degrees warmer. * Max humidity..........100 percent. * 24 hr trend.........54 percent wetter. * Wind (20 ft) * Plains...............Southeast winds 5 to 15 mph. * Chance of lightning...17 percent. * CWR...................40 percent. .MONDAY... * Sky/weather...........Mostly cloudy. Scattered rain showers in the morning. Patchy fog in the morning. * Max temperature.......64-69. * 24 hr trend.........Unchanged. * Min humidity..........61-66 percent. * 24 hr trend.........33 percent wetter. * Wind (20 ft) * Plains...............Southwest winds 5 to 10 mph in the morning shifting to the northwest in the afternoon. * Chance of lightning...8 percent. * CWR...................Less than 10 percent. .Forecast days 3 through 7...... .MONDAY NIGHT...Partly cloudy. Lows 45 to 50. Northwest winds 5 to 10 mph. .TUESDAY...Mostly clear. Lows 47 to 52. Highs 68 to 73. Southwest winds 5 to 15 mph. .WEDNESDAY...Mostly clear. Lows 46 to 51. Highs 70 to 75. Northwest winds 5 to 15 mph. .THURSDAY...Mostly clear. Lows 45 to 50. Highs 64 to 69. Southeast winds 5 to 15 mph. .FRIDAY...Partly cloudy. Lows 44 to 49. Highs 66 to 71. .SATURDAY...Mostly sunny. Highs 57 to 62. $$ MTZ133-271030- Sioux Ranger District Custer National Forest- 102 PM MDT Sat Sep 26 2026 .Tonight... * Sky/weather...........Partly cloudy. * Min temperature.......46-51. * 24 hr trend.........7 degrees cooler. * Max humidity..........54-59 percent. * 24 hr trend.........44 percent drier. * Wind (20 ft) * Plains...............North winds 5 to 15 mph. * Chance of lightning...4 percent. * CWR...................Zero. .SUNDAY... * Sky/weather...........Mostly cloudy with isolated rain showers. * Max temperature.......66-71. * 24 hr trend.........4 degrees cooler. * Min humidity..........33-38 percent. * 24 hr trend.........8 percent wetter. * Wind (20 ft) * Plains...............East winds 10 to 20 mph. Gusts up to 30 mph in the afternoon. * Chance of lightning...4 percent. * CWR...................Less than 10 percent. .SUNDAY NIGHT... * Sky/weather...........Cloudy. Scattered rain showers and isolated thunderstorms in the evening, then numerous rain showers and scattered thunderstorms overnight. * Min temperature.......51-56. * 24 hr trend.........5 degrees warmer. * Max humidity..........100 percent. * 24 hr trend.........44 percent wetter. * Wind (20 ft) * Plains...............Southeast winds 10 to 20 mph. Gusts up to 30 mph in the evening. * Chance of lightning...25 percent. * CWR...................60 percent. .MONDAY... * Sky/weather...........Mostly cloudy. Scattered rain showers in the morning, then scattered rain showers and isolated thunderstorms in the afternoon. * Max temperature.......69-74. * 24 hr trend.........3 degrees warmer. * Min humidity..........62-67 percent. * 24 hr trend.........29 percent wetter. * Wind (20 ft) * Plains...............South winds 5 to 10 mph in the morning shifting to the northwest 5 to 15 mph in the afternoon. * Chance of lightning...15 percent. * CWR...................Less than 10 percent. .Forecast days 3 through 7...... .MONDAY NIGHT...Mostly cloudy. Patchy fog. Lows 47 to 52. Northwest winds 5 to 15 mph. .TUESDAY...Mostly clear. Lows 46 to 51. Highs 71 to 76. Southwest winds 5 to 15 mph. .WEDNESDAY...Mostly clear. Lows 46 to 51. Highs 74 to 79. Northwest winds 5 to 15 mph. .THURSDAY...Mostly clear. Lows 45 to 50. Highs 67 to 72. East winds 5 to 15 mph. .FRIDAY...Partly cloudy. Lows 44 to 49. Highs 68 to 73. .SATURDAY...Mostly sunny. Highs 60 to 65. $$ WYZ274-271030- Sheridan County- 102 PM MDT Sat Sep 26 2026 .Tonight... * Sky/weather...........Mostly clear. * Min temperature.......39-44. * 24 hr trend.........8 degrees cooler. * Max humidity..........79-84 percent. * 24 hr trend.........13 percent wetter. * Wind (20 ft) * Slope/valley.........Northwest winds 5 to 10 mph in the evening becoming light overnight. * Ridgetop.............Southwest 10 to 20 mph. * Chance of lightning...1 percent. * CWR...................Zero. .SUNDAY... * Sky/weather...........Partly sunny. * Max temperature.......66-71. * 24 hr trend.........4 degrees cooler. * Min humidity..........36-41 percent. * 24 hr trend.........7 percent wetter. * Wind (20 ft) * Slope/valley.........Light winds in the morning becoming east 5 to 10 mph in the afternoon. * Ridgetop.............Southwest 10 to 20 mph. * Chance of lightning...3 percent. * CWR...................Zero. .SUNDAY NIGHT... * Sky/weather...........Cloudy. Isolated rain showers in the evening, then scattered rain showers overnight. * Min temperature.......44-49. * 24 hr trend.........5 degrees warmer. * Max humidity..........81-86 percent. * 24 hr trend.........2 percent wetter. * Wind (20 ft) * Slope/valley.........Light winds. * Ridgetop.............Southwest 10 to 20 mph. * Chance of lightning...8 percent. * CWR...................Less than 10 percent. .MONDAY... * Sky/weather...........Partly sunny. Isolated rain showers in the morning, then scattered rain showers in the afternoon. * Max temperature.......63-68. * 24 hr trend.........3 degrees cooler. * Min humidity..........48-53 percent. * 24 hr trend.........12 percent wetter. * Wind (20 ft) * Slope/valley.........Northwest winds 5 to 10 mph. * Ridgetop.............West 5 to 15 mph. * Chance of lightning...11 percent. * CWR...................10 percent. .Forecast days 3 through 7...... .MONDAY NIGHT...Partly cloudy. Patchy fog. Scattered showers. Lows 39 to 44. West winds 5 to 10 mph. .TUESDAY...Mostly clear. Lows 40 to 45. Highs 69 to 74. South winds 5 to 10 mph. .WEDNESDAY...Mostly clear. Lows 41 to 46. Highs 72 to 77. Northwest winds 5 to 10 mph. .THURSDAY...Mostly clear. Lows 41 to 46. Highs 69 to 74. Southeast winds 5 to 10 mph. .FRIDAY...Partly cloudy. Lows 39 to 44. Highs 70 to 75. .SATURDAY...Mostly sunny. Isolated showers. Highs 61 to 66. $$ WYZ284-271030- Bighorn National Forest- 102 PM MDT Sat Sep 26 2026 .Tonight... * Sky/weather...........Partly cloudy. * Min temperature.......34-39. * 24 hr trend.........2 degrees warmer. * Max humidity..........74-79 percent. * 24 hr trend.........6 percent drier. * Wind (20 ft) * At Burgess Jct.......Southwest winds 5 to 10 mph. * Chance of lightning...2 percent. * CWR...................Zero. .SUNDAY... * Sky/weather...........Partly sunny. Isolated rain showers in the morning. * Max temperature.......57-62. * 24 hr trend.........3 degrees cooler. * Min humidity..........34-39 percent. * 24 hr trend.........7 percent wetter. * Wind (20 ft) * At Burgess Jct.......South winds 5 to 15 mph. * Chance of lightning...3 percent. * CWR...................Less than 10 percent. .SUNDAY NIGHT... * Sky/weather...........Mostly cloudy. Scattered rain showers in the evening, then isolated rain showers and snow showers overnight. * Min temperature.......37-42. * 24 hr trend.........3 degrees warmer. * Max humidity..........81-86 percent. * 24 hr trend.........7 percent wetter. * Wind (20 ft) * At Burgess Jct.......South winds 5 to 15 mph. * Chance of lightning...6 percent. * CWR...................10 percent. .MONDAY... * Sky/weather...........Mostly cloudy. Scattered rain showers in the morning, then numerous rain showers in the afternoon. * Max temperature.......52-57. * 24 hr trend.........5 degrees cooler. * Min humidity..........53-58 percent. * 24 hr trend.........19 percent wetter. * Wind (20 ft) * At Burgess Jct.......West winds 5 to 15 mph. * Chance of lightning...14 percent. * CWR...................30 percent. .Forecast days 3 through 7...... .MONDAY NIGHT...Mostly cloudy. Patchy fog. Scattered showers. Lows 30 to 35. West winds 5 to 10 mph. .TUESDAY...Mostly clear. Lows 34 to 39. Highs 56 to 61. Southwest winds 5 to 10 mph. .WEDNESDAY...Mostly clear. Lows 33 to 38. Highs 59 to 64. West winds 5 to 15 mph. .THURSDAY...Mostly clear. Lows 35 to 40. Highs 56 to 61. Southwest winds 5 to 15 mph. .FRIDAY...Partly cloudy. Isolated showers. Lows 32 to 37. Highs 57 to 62. .SATURDAY...Mostly sunny. Isolated showers and snow showers. Highs 49 to 54. $$ weather.gov/billings