Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS Billings, MT
Issued by NWS Billings, MT
087 FNUS55 KBYZ 062137 FWFBYZ Fire Weather Planning Forecast for SCen and SErn Montana National Weather Service Billings MT 337 PM MDT Sun Sep 6 2026 .DISCUSSION... ...Warm, Breezy, and Dry over the Mountains of South-Central Montana Today... ...Widespread Windy Conditions Late Monday into Tuesday... Isolated to scattered showers and thunderstorms are expected to develop and move north to northeast through the area this evening into Monday morning. With this, thunderstorms will be capable of producing locally heavy rain, as well as gusty winds and hail. The chance of seeing a wetting rain is greatest around and north/west of Billings, as well as over the mountains. Additional isolated showers and thunderstorms are forecast on Monday. However, the main concern Monday is the windy conditions that are expected to develop during the afternoon and evening. With the wind, high temperatures will be in the 60s and 70s west of Billings and generally 80s east of Billings. Minimum relative humidity values will be in the 20s and 30s percent, with a few localized teens into Wyoming. Tuesday will be another windy day though temperatures will be cooler in the 70s to 80 degrees. Minimum relative humidity will be a bit lower, but still generally in the 20s and 30s percent. Temperatures trend warmer and relative humidity trends drier Wednesday into Thursday. LA MTZ123-071045- Gallatin National Forest- 337 PM MDT Sun Sep 6 2026 .Tonight... * Sky/weather...........Mostly cloudy. Numerous rain showers and isolated thunderstorms overnight. * Min temperature.......48-58 at 5000 feet...41-51 at 7000 feet. * 24 hr trend.........5 degrees warmer. * Max humidity..........78-88 percent at 5000 feet...76-86 percent at 7000 feet. * 24 hr trend.........25 percent drier. * Wind (20 ft) * Slope/valley.........Southeast winds 5 to 15 mph. * Ridgetop.............South 10 to 20 mph. * Chance of lightning...19 percent. * CWR...................15 percent. .MONDAY... * Sky/weather...........Mostly cloudy with numerous rain showers and isolated thunderstorms in the morning, then mostly sunny with isolated showers and thunderstorms in the afternoon. * Max temperature.......63-71 at 5000 feet...50-60 at 7000 feet. * 24 hr trend.........14 degrees cooler. * Min humidity..........24-34 percent at 5000 feet...31-41 percent at 7000 feet. * 24 hr trend.........13 percent wetter. * Wind (20 ft) * Slope/valley.........Southwest winds 10 to 20 mph. Gusts up to 30 mph in the afternoon. * Ridgetop.............Southwest 15 to 30 mph. * Chance of lightning...19 percent. * CWR...................20 percent. .MONDAY NIGHT... * Sky/weather...........Partly cloudy. * Min temperature.......39-49 at 5000 feet...33-43 at 7000 feet. * 24 hr trend.........8 degrees cooler. * Max humidity..........63-68 percent. * 24 hr trend.........10 percent drier. * Wind (20 ft) * Slope/valley.........Southwest winds 5 to 15 mph. * Ridgetop.............West 15 to 25 mph. * Chance of lightning...2 percent. * CWR...................Zero. .TUESDAY... * Sky/weather...........Sunny. * Max temperature.......64-74 at 5000 feet...51-61 at 7000 feet. * 24 hr trend.........2 degrees warmer. * Min humidity..........21-31 percent at 5000 feet...29-39 percent at 7000 feet. * 24 hr trend.........7 percent drier. * Wind (20 ft) * Slope/valley.........West winds 5 to 15 mph. * Ridgetop.............West 10 to 20 mph. * Chance of lightning...4 percent. * CWR...................Zero. .Forecast days 3 through 7...... .TUESDAY NIGHT...Mostly clear. Lows 38 to 48. Southwest winds 5 to 10 mph. .WEDNESDAY...Mostly clear. Lows 44 to 54. Highs 72 to 81. Southwest winds 5 to 15 mph. .THURSDAY...Mostly clear. Lows 46 to 56. Highs 76 to 84. Southwest winds 5 to 15 mph. .FRIDAY...Partly cloudy. Scattered showers and isolated thunderstorms. Lows 38 to 48. Highs 68 to 78. West winds 5 to 10 mph. .SATURDAY...Mostly cloudy. Scattered showers and isolated thunderstorms. Lows 35 to 45. Highs 59 to 69. .SUNDAY...Mostly sunny. Scattered showers and snow showers. Highs 60 to 70. $$ MTZ124-071045- Wheatland County/Sweet Grass County- 337 PM MDT Sun Sep 6 2026 .Tonight... * Sky/weather...........Partly cloudy with isolated showers and thunderstorms in the evening, then cloudy with numerous rain showers and scattered thunderstorms overnight. * Min temperature.......50-55. * 24 hr trend.........1 degree warmer. * Max humidity..........100 percent. * 24 hr trend.........21 percent wetter. * Wind (20 ft) * Plains...............East winds 5 to 15 mph in the evening shifting to the north overnight. * Chance of lightning...29 percent. * CWR...................60 percent. .MONDAY... * Sky/weather...........Mostly sunny with scattered rain showers and isolated thunderstorms. * Max temperature.......68-73. * 24 hr trend.........11 degrees cooler. * Min humidity..........30-35 percent. * 24 hr trend.........9 percent drier. * Wind (20 ft) * Plains...............Windy in the afternoon. West winds 10 to 20 mph with gusts to around 35 mph in the morning increasing to 20 to 35 mph with gusts to around 50 mph in the afternoon. * Chance of lightning...18 percent. * CWR...................20 percent. .MONDAY NIGHT... * Sky/weather...........Mostly clear. * Min temperature.......43-48. * 24 hr trend.........7 degrees cooler. * Max humidity..........70-75 percent. * 24 hr trend.........26 percent drier. * Wind (20 ft) * Plains...............Windy. West winds 20 to 35 mph with gusts to around 50 mph. * Chance of lightning...0 percent. * CWR...................Zero. .TUESDAY... * Sky/weather...........Sunny. * Max temperature.......67-72. * 24 hr trend.........1 degree cooler. * Min humidity..........27-32 percent. * 24 hr trend.........3 percent drier. * Wind (20 ft) * Plains...............Windy. West winds 20 to 35 mph with gusts to around 45 mph. * Chance of lightning...1 percent. * CWR...................Zero. .Forecast days 3 through 7...... .TUESDAY NIGHT...Mostly clear. Lows 41 to 46. West winds 15 to 25 mph with gusts to around 40 mph. .WEDNESDAY...Clear. Lows 45 to 50. Highs 75 to 80. West winds 10 to 20 mph with gusts to around 35 mph. .THURSDAY...Mostly clear. Isolated showers. Lows 47 to 52. Highs 79 to 84. West winds 15 to 25 mph with gusts to around 40 mph. .FRIDAY...Not as warm. Mostly cloudy. Scattered showers and isolated thunderstorms. Lows 40 to 45. Highs 68 to 73. North winds 10 to 20 mph with gusts to around 30 mph. .SATURDAY...Mostly cloudy. Scattered showers. Lows 37 to 42. Highs 60 to 65. .SUNDAY...Mostly sunny. Scattered showers. Highs 62 to 67. $$ MTZ125-071045- Stillwater County- 337 PM MDT Sun Sep 6 2026 .Tonight... * Sky/weather...........Mostly cloudy. Isolated showers and thunderstorms in the evening, then numerous rain showers and isolated thunderstorms overnight. * Min temperature.......55-60. * 24 hr trend.........4 degrees warmer. * Max humidity..........76-81 percent. * 24 hr trend.........4 percent wetter. * Wind (20 ft) * Plains...............Northwest winds 5 to 15 mph in the evening shifting to the southwest 10 to 20 mph with gusts to around 30 mph overnight. * Chance of lightning...24 percent. * CWR...................Less than 10 percent. .MONDAY... * Sky/weather...........Partly sunny with isolated rain showers in the morning, then sunny in the afternoon. * Max temperature.......73-78. * 24 hr trend.........8 degrees cooler. * Min humidity..........17-22 percent. * 24 hr trend.........1 percent drier. * Wind (20 ft) * Plains...............South winds 5 to 15 mph in the morning increasing to west 15 to 25 mph with gusts to around 30 mph in the afternoon. * Chance of lightning...10 percent. * CWR...................Less than 10 percent. .MONDAY NIGHT... * Sky/weather...........Mostly clear. * Min temperature.......45-50. * 24 hr trend.........10 degrees cooler. * Max humidity..........50-55 percent. * 24 hr trend.........26 percent drier. * Wind (20 ft) * Plains...............West winds 10 to 20 mph. Gusts up to 30 mph in the evening. * Chance of lightning...0 percent. * CWR...................Zero. .TUESDAY... * Sky/weather...........Sunny. * Max temperature.......70-75. * 24 hr trend.........3 degrees cooler. * Min humidity..........21-26 percent. * 24 hr trend.........4 percent wetter. * Wind (20 ft) * Plains...............Northwest winds 5 to 15 mph. * Chance of lightning...2 percent. * CWR...................Zero. .Forecast days 3 through 7...... .TUESDAY NIGHT...Mostly clear. Lows 44 to 49. West winds 5 to 15 mph with gusts to around 30 mph. .WEDNESDAY...Mostly clear. Lows 49 to 54. Highs 77 to 82. West winds 5 to 10 mph. .THURSDAY...Mostly clear. Lows 51 to 56. Highs 83 to 88. West winds 5 to 15 mph. .FRIDAY...Not as warm. Mostly cloudy. Scattered showers and isolated thunderstorms. Lows 44 to 49. Highs 72 to 77. North winds 5 to 10 mph. .SATURDAY...Cooler. Mostly cloudy. Scattered showers and isolated thunderstorms. Lows 41 to 46. Highs 61 to 66. .SUNDAY...Partly sunny. Scattered showers. Highs 63 to 68. $$ MTZ126-071045- Beartooth Ranger District Custer National Forest- 337 PM MDT Sun Sep 6 2026 .Tonight... * Sky/weather...........Mostly cloudy. Isolated showers and thunderstorms in the evening, then numerous rain showers and isolated thunderstorms overnight. * Min temperature.......56-63 at 5000 feet...46-56 at 7000 feet. * 24 hr trend.........1 degree warmer. * Max humidity..........68-73 percent. * 24 hr trend.........1 percent drier. * Wind (20 ft) * Slope/valley.........Southwest winds 5 to 15 mph. * Ridgetop.............Southwest 10 to 20 mph. * Chance of lightning...18 percent. * CWR...................20 percent. .MONDAY... * Sky/weather...........Mostly sunny. Isolated rain showers in the morning. * Max temperature.......70-80 at 5000 feet...60-70 at 7000 feet. * 24 hr trend.........10 degrees cooler. * Min humidity..........15-21 percent at 5000 feet...22-32 percent at 7000 feet. * 24 hr trend.........4 percent wetter. * Wind (20 ft) * Slope/valley.........West winds 15 to 25 mph. Gusts up to 30 mph in the afternoon. * Ridgetop.............Southwest 15 to 30 mph. * Chance of lightning...8 percent. * CWR...................Less than 10 percent. .MONDAY NIGHT... * Sky/weather...........Mostly clear. * Min temperature.......46-53 at 5000 feet...37-47 at 7000 feet. * 24 hr trend.........9 degrees cooler. * Max humidity..........42-52 percent at 5000 feet...47-57 percent at 7000 feet. * 24 hr trend.........24 percent drier. * Wind (20 ft) * Slope/valley.........Southwest winds 10 to 20 mph. Gusts up to 30 mph in the evening. * Ridgetop.............Southwest 15 to 25 mph. * Chance of lightning...0 percent. * CWR...................Zero. .TUESDAY... * Sky/weather...........Sunny. * Max temperature.......68-75 at 5000 feet...58-68 at 7000 feet. * 24 hr trend.........1 degree cooler. * Min humidity..........17-27 percent at 5000 feet...21-31 percent at 7000 feet. * 24 hr trend.........2 percent wetter. * Wind (20 ft) * Slope/valley.........West winds 5 to 15 mph. * Ridgetop.............West 10 to 20 mph. * Chance of lightning...1 percent. * CWR...................Zero. .Forecast days 3 through 7...... .TUESDAY NIGHT...Mostly clear. Lows 45 to 51. West winds 5 to 15 mph. .WEDNESDAY...Mostly clear. Lows 49 to 56. Highs 69 to 78. West winds 5 to 15 mph. .THURSDAY...Mostly clear. Lows 53 to 58. Highs 74 to 84. West winds 10 to 20 mph with gusts to around 35 mph. .FRIDAY...Mostly cloudy. Scattered showers and isolated thunderstorms. Lows 45 to 51. Highs 69 to 76. Northwest winds 5 to 15 mph. .SATURDAY...Cooler. Mostly cloudy. Scattered showers, snow showers and isolated thunderstorms. Lows 41 to 48. Highs 59 to 66. .SUNDAY...Partly sunny. Scattered showers and snow showers. Highs 58 to 67. $$ MTZ127-071045- Golden Valley County/Musselshell county- 337 PM MDT Sun Sep 6 2026 .Tonight... * Sky/weather...........Mostly cloudy. Isolated showers and thunderstorms in the evening, then numerous rain showers and scattered thunderstorms overnight. * Min temperature.......57-62. * 24 hr trend.........2 degrees warmer. * Max humidity..........84-89 percent. * 24 hr trend.........1 percent drier. * Wind (20 ft) * Plains...............North winds 10 to 20 mph. * Chance of lightning...46 percent. * CWR...................50 percent. .MONDAY... * Sky/weather...........Mostly sunny. Scattered rain showers in the morning, then isolated showers and thunderstorms in the afternoon. * Max temperature.......71-76. * 24 hr trend.........6 degrees cooler. * Min humidity..........26-31 percent. * 24 hr trend.........22 percent drier. * Wind (20 ft) * Plains...............West winds 10 to 20 mph. Gusts up to 35 mph in the afternoon. * Chance of lightning...15 percent. * CWR...................30 percent. .MONDAY NIGHT... * Sky/weather...........Mostly clear. * Min temperature.......52-57. * 24 hr trend.........5 degrees cooler. * Max humidity..........48-53 percent. * 24 hr trend.........36 percent drier. * Wind (20 ft) * Plains...............West winds 15 to 25 mph with gusts to around 35 mph. * Chance of lightning...2 percent. * CWR...................Zero. .TUESDAY... * Sky/weather...........Sunny. * Max temperature.......66-71. * 24 hr trend.........5 degrees cooler. * Min humidity..........25-30 percent. * 24 hr trend.........1 percent drier. * Wind (20 ft) * Plains...............West winds 15 to 25 mph with gusts to around 35 mph. * Chance of lightning...2 percent. * CWR...................Zero. .Forecast days 3 through 7...... .TUESDAY NIGHT...Mostly clear. Lows 47 to 52. West winds 10 to 20 mph with gusts to around 30 mph. .WEDNESDAY...Clear. Lows 52 to 57. Highs 73 to 78. West winds 5 to 15 mph. .THURSDAY...Mostly clear. Lows 53 to 58. Highs 79 to 84. West winds 5 to 15 mph with gusts to around 30 mph. .FRIDAY...Cooler. Mostly cloudy. Scattered showers. Lows 45 to 50. Highs 66 to 71. North winds 5 to 15 mph. .SATURDAY...Mostly cloudy. Scattered showers. Lows 42 to 47. Highs 57 to 62. .SUNDAY...Mostly sunny. Scattered showers. Highs 59 to 64. $$ MTZ128-071045- Yellowstone County- 337 PM MDT Sun Sep 6 2026 .Tonight... * Sky/weather...........Mostly cloudy. Isolated showers and thunderstorms in the evening, then scattered showers and thunderstorms overnight. * Min temperature.......59-64. * 24 hr trend.........2 degrees warmer. * Max humidity..........85-90 percent. * 24 hr trend.........9 percent wetter. * Wind (20 ft) * Plains...............Northeast winds 10 to 20 mph in the evening shifting to the northwest 5 to 15 mph overnight. * Chance of lightning...37 percent. * CWR...................30 percent. .MONDAY... * Sky/weather...........Mostly sunny. Isolated rain showers in the morning, then isolated showers and thunderstorms in the afternoon. * Max temperature.......78-83. * 24 hr trend.........6 degrees cooler. * Min humidity..........20-25 percent. * 24 hr trend.........10 percent drier. * Wind (20 ft) * Plains...............West winds 5 to 15 mph in the morning increasing to 15 to 25 mph with gusts to around 35 mph in the afternoon. * Chance of lightning...15 percent. * CWR...................Less than 10 percent. .MONDAY NIGHT... * Sky/weather...........Mostly clear. * Min temperature.......50-55. * 24 hr trend.........9 degrees cooler. * Max humidity..........59-64 percent. * 24 hr trend.........26 percent drier. * Wind (20 ft) * Plains...............West winds 15 to 25 mph. Gusts up to 40 mph in the evening. * Chance of lightning...1 percent. * CWR...................Zero. .TUESDAY... * Sky/weather...........Sunny. * Max temperature.......73-78. * 24 hr trend.........5 degrees cooler. * Min humidity..........19-24 percent. * 24 hr trend.........1 percent drier. * Wind (20 ft) * Plains...............West winds 15 to 25 mph with gusts to around 30 mph. * Chance of lightning...1 percent. * CWR...................Zero. .Forecast days 3 through 7...... .TUESDAY NIGHT...Mostly clear. Lows 48 to 53. West winds 10 to 20 mph with gusts to around 30 mph. .WEDNESDAY...Mostly clear. Lows 52 to 57. Highs 79 to 84. West winds 5 to 15 mph. .THURSDAY...Mostly clear. Lows 53 to 58. Highs 85 to 90. West winds 5 to 15 mph. .FRIDAY...Not as warm. Mostly cloudy. Scattered showers. Lows 46 to 51. Highs 72 to 77. Northeast winds 5 to 15 mph. .SATURDAY...Mostly cloudy. Scattered showers. Lows 43 to 48. Highs 63 to 68. .SUNDAY...Mostly sunny. Scattered showers. Highs 65 to 70. $$ MTZ129-071045- Crow Indian Reservation/Bighorn Canyon Rec Area- 337 PM MDT Sun Sep 6 2026 .Tonight... * Sky/weather...........Cloudy. Scattered rain showers and isolated thunderstorms overnight. * Min temperature.......56-64 at 5000 feet...53-58 at 7000 feet. * 24 hr trend.........4 degrees warmer. * Max humidity..........67-77 percent at 5000 feet...63-73 percent at 7000 feet. * 24 hr trend.........11 percent drier. * Wind (20 ft) * Slope/valley.........East winds 5 to 15 mph in the evening shifting to the southwest 10 to 20 mph overnight. * Ridgetop.............East 5 to 15 mph in the evening shifting to the west 10 to 20 mph overnight. * Chance of lightning...15 percent. * CWR...................Less than 10 percent. .MONDAY... * Sky/weather...........Mostly sunny. Isolated rain showers in the morning, then isolated showers and thunderstorms in the afternoon. * Max temperature.......70-80 at 5000 feet...64-71 at 7000 feet. * 24 hr trend.........6 degrees cooler. * Min humidity..........14-21 percent at 5000 feet...20-25 percent at 7000 feet. * 24 hr trend.........4 percent drier. * Wind (20 ft) * Slope/valley.........West winds 10 to 20 mph. Gusts up to 30 mph in the afternoon. * Ridgetop.............West 15 to 25 mph. * Chance of lightning...15 percent. * CWR...................Less than 10 percent. .MONDAY NIGHT... * Sky/weather...........Mostly clear. * Min temperature.......47-53 at 5000 feet...44-49 at 7000 feet. * 24 hr trend.........9 degrees cooler. * Max humidity..........45-55 percent at 5000 feet...40-48 percent at 7000 feet. * 24 hr trend.........22 percent drier. * Wind (20 ft) * Slope/valley.........West winds 15 to 25 mph. Gusts up to 30 mph in the evening. * Ridgetop.............West 15 to 25 mph. * Chance of lightning...2 percent. * CWR...................Zero. .TUESDAY... * Sky/weather...........Sunny. * Max temperature.......65-75 at 5000 feet...60-66 at 7000 feet. * 24 hr trend.........7 degrees cooler. * Min humidity..........15-25 percent at 5000 feet...21-27 percent at 7000 feet. * 24 hr trend.........2 percent wetter. * Wind (20 ft) * Slope/valley.........Northwest winds 10 to 20 mph. Gusts up to 30 mph in the afternoon. * Ridgetop.............West 15 to 25 mph. * Chance of lightning...0 percent. * CWR...................Zero. .Forecast days 3 through 7...... .TUESDAY NIGHT...Mostly clear. Lows 46 to 51. West winds 10 to 20 mph with gusts to around 30 mph. .WEDNESDAY...Mostly clear. Lows 51 to 57. Highs 70 to 80. Southwest winds 5 to 10 mph. .THURSDAY...Mostly clear. Lows 53 to 58. Highs 76 to 86. West winds 5 to 15 mph. .FRIDAY...Not as warm. Partly cloudy. Scattered showers. Lows 46 to 51. Highs 67 to 77. North winds 5 to 10 mph. .SATURDAY...Mostly cloudy. Scattered showers. Lows 42 to 48. Highs 56 to 66. .SUNDAY...Mostly sunny. Isolated showers. Highs 58 to 68. $$ MTZ130-071045- Northern Rosebud/Northern Treasure Counties- 337 PM MDT Sun Sep 6 2026 .Tonight... * Sky/weather...........Mostly cloudy. Scattered showers and thunderstorms overnight. * Min temperature.......60-65. * 24 hr trend.........2 degrees warmer. * Max humidity..........91-96 percent. * 24 hr trend.........7 percent drier. * Wind (20 ft) * Plains...............Northeast winds 10 to 20 mph in the evening shifting to the northwest overnight. * Chance of lightning...27 percent. * CWR...................Less than 10 percent. .MONDAY... * Sky/weather...........Partly sunny with scattered rain showers in the morning, then mostly sunny with isolated showers and thunderstorms in the afternoon. * Max temperature.......81-86. * 24 hr trend.........7 degrees cooler. * Min humidity..........22-27 percent. * 24 hr trend.........12 percent drier. * Wind (20 ft) * Plains...............West winds 10 to 20 mph. Gusts up to 30 mph in the afternoon. * Chance of lightning...15 percent. * CWR...................Less than 10 percent. .MONDAY NIGHT... * Sky/weather...........Mostly clear. Isolated showers and thunderstorms in the evening. * Min temperature.......50-55. * 24 hr trend.........10 degrees cooler. * Max humidity..........64-69 percent. * 24 hr trend.........27 percent drier. * Wind (20 ft) * Plains...............West winds 10 to 20 mph. Gusts up to 30 mph in the evening. * Chance of lightning...15 percent. * CWR...................Less than 10 percent. .TUESDAY... * Sky/weather...........Sunny. * Max temperature.......74-79. * 24 hr trend.........7 degrees cooler. * Min humidity..........22-27 percent. * 24 hr trend.........Unchanged. * Wind (20 ft) * Plains...............West winds 15 to 25 mph with gusts to around 30 mph. * Chance of lightning...0 percent. * CWR...................Zero. .Forecast days 3 through 7...... .TUESDAY NIGHT...Partly cloudy. Lows 47 to 52. Northwest winds 10 to 20 mph with gusts to around 30 mph. .WEDNESDAY...Mostly clear. Lows 49 to 54. Highs 78 to 83. West winds 5 to 10 mph. .THURSDAY...Mostly clear. Lows 50 to 55. Highs 85 to 90. West winds 5 to 15 mph. .FRIDAY...Not as warm. Partly cloudy. Scattered showers. Lows 44 to 49. Highs 72 to 77. North winds 5 to 15 mph. .SATURDAY...Mostly cloudy. Scattered showers. Lows 41 to 46. Highs 64 to 69. .SUNDAY...Mostly sunny. Scattered showers. Highs 66 to 71. $$ MTZ131-071045- Northern Cheyenne Indian Reservation/Ashland Ranger District Custer Natl Forest- 337 PM MDT Sun Sep 6 2026 .Tonight... * Sky/weather...........Cloudy. Scattered rain showers overnight. * Min temperature.......60-65. * 24 hr trend.........8 degrees warmer. * Max humidity..........68-73 percent. * 24 hr trend.........26 percent drier. * Wind (20 ft) * Slope/valley.........Northeast winds 5 to 15 mph in the evening shifting to the southwest 10 to 20 mph overnight. * Ridgetop.............Southeast 10 to 20 mph in the evening shifting to the southwest overnight. * Chance of lightning...10 percent. * CWR...................Less than 10 percent. .MONDAY... * Sky/weather...........Mostly sunny. Isolated rain showers in the morning, then isolated showers and thunderstorms in the afternoon. * Max temperature.......83-88. * 24 hr trend.........7 degrees cooler. * Min humidity..........19-24 percent. * 24 hr trend.........1 percent wetter. * Wind (20 ft) * Slope/valley.........West winds 10 to 20 mph. * Ridgetop.............West 15 to 25 mph. * Chance of lightning...15 percent. * CWR...................Less than 10 percent. .MONDAY NIGHT... * Sky/weather...........Mostly clear. * Min temperature.......45-50. * 24 hr trend.........15 degrees cooler. * Max humidity..........67-72 percent. * 24 hr trend.........1 percent drier. * Wind (20 ft) * Slope/valley.........West winds 10 to 20 mph. * Ridgetop.............West 15 to 25 mph. * Chance of lightning...6 percent. * CWR...................Zero. .TUESDAY... * Sky/weather...........Sunny. * Max temperature.......76-81. * 24 hr trend.........7 degrees cooler. * Min humidity..........17-22 percent. * 24 hr trend.........2 percent drier. * Wind (20 ft) * Slope/valley.........West winds 10 to 20 mph. * Ridgetop.............West 15 to 25 mph. * Chance of lightning...0 percent. * CWR...................Zero. .Forecast days 3 through 7...... .TUESDAY NIGHT...Mostly clear. Lows 44 to 49. Northwest winds 5 to 15 mph. .WEDNESDAY...Mostly clear. Lows 47 to 52. Highs 78 to 83. Southwest winds 5 to 10 mph. .THURSDAY...Mostly clear. Lows 49 to 54. Highs 85 to 90. West winds 5 to 10 mph. .FRIDAY...Partly cloudy. Scattered showers. Lows 43 to 48. Highs 77 to 82. North winds 5 to 15 mph. .SATURDAY...Cooler. Mostly cloudy. Scattered showers. Lows 40 to 45. Highs 66 to 71. .SUNDAY...Mostly sunny. Isolated showers. Highs 67 to 72. $$ MTZ132-071045- Custer County- 337 PM MDT Sun Sep 6 2026 .Tonight... * Sky/weather...........Mostly cloudy. Isolated showers and thunderstorms in the evening, then scattered rain showers and isolated thunderstorms overnight. * Min temperature.......65-70. * 24 hr trend.........4 degrees warmer. * Max humidity..........67-72 percent. * 24 hr trend.........31 percent drier. * Wind (20 ft) * Plains...............Southeast winds 10 to 20 mph. * Chance of lightning...19 percent. * CWR...................20 percent. .MONDAY... * Sky/weather...........Partly sunny with scattered rain showers in the morning, then mostly sunny with isolated showers and thunderstorms in the afternoon. * Max temperature.......81-86. * 24 hr trend.........9 degrees cooler. * Min humidity..........31-36 percent. * 24 hr trend.........5 percent wetter. * Wind (20 ft) * Plains...............West winds 10 to 20 mph. * Chance of lightning...15 percent. * CWR...................Less than 10 percent. .MONDAY NIGHT... * Sky/weather...........Mostly clear. Isolated showers and thunderstorms in the evening. * Min temperature.......51-56. * 24 hr trend.........14 degrees cooler. * Max humidity..........64-69 percent. * 24 hr trend.........3 percent drier. * Wind (20 ft) * Plains...............West winds 10 to 20 mph. * Chance of lightning...15 percent. * CWR...................Less than 10 percent. .TUESDAY... * Sky/weather...........Sunny. * Max temperature.......73-78. * 24 hr trend.........8 degrees cooler. * Min humidity..........27-32 percent. * 24 hr trend.........4 percent drier. * Wind (20 ft) * Plains...............West winds 15 to 25 mph with gusts to around 35 mph. * Chance of lightning...0 percent. * CWR...................Zero. .Forecast days 3 through 7...... .TUESDAY NIGHT...Mostly clear. Lows 48 to 53. Northwest winds 10 to 20 mph with gusts to around 30 mph. .WEDNESDAY...Mostly clear. Lows 50 to 55. Highs 74 to 79. West winds 5 to 15 mph. .THURSDAY...Mostly clear. Lows 52 to 57. Highs 82 to 87. West winds 5 to 15 mph. .FRIDAY...Not as warm. Partly cloudy. Scattered showers. Lows 46 to 51. Highs 72 to 77. North winds 5 to 15 mph. .SATURDAY...Mostly cloudy. Scattered showers. Lows 42 to 47. Highs 64 to 69. .SUNDAY...Mostly sunny. Isolated showers. Highs 64 to 69. $$ MTZ133-071045- Sioux Ranger District Custer National Forest- 337 PM MDT Sun Sep 6 2026 .Tonight... * Sky/weather...........Mostly cloudy. Isolated showers and thunderstorms in the evening, then scattered showers and thunderstorms overnight. * Min temperature.......65-70. * 24 hr trend.........7 degrees warmer. * Max humidity..........75-80 percent. * 24 hr trend.........2 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...................Less than 10 percent. .MONDAY... * Sky/weather...........Mostly cloudy with scattered rain showers in the morning, then mostly sunny with isolated showers and thunderstorms in the afternoon. * Max temperature.......86-91. * 24 hr trend.........8 degrees cooler. * Min humidity..........27-32 percent. * 24 hr trend.........2 percent wetter. * Wind (20 ft) * Plains...............West winds 10 to 20 mph. Gusts up to 30 mph in the afternoon. * Chance of lightning...15 percent. * CWR...................Less than 10 percent. .MONDAY NIGHT... * Sky/weather...........Partly cloudy. Isolated showers and thunderstorms in the evening. * Min temperature.......52-57. * 24 hr trend.........13 degrees cooler. * Max humidity..........63-68 percent. * 24 hr trend.........12 percent drier. * Wind (20 ft) * Plains...............Northwest winds 10 to 20 mph. * Chance of lightning...15 percent. * CWR...................Less than 10 percent. .TUESDAY... * Sky/weather...........Sunny. * Max temperature.......77-82. * 24 hr trend.........9 degrees cooler. * Min humidity..........22-27 percent. * 24 hr trend.........5 percent drier. * Wind (20 ft) * Plains...............West winds 15 to 25 mph with gusts to around 35 mph. * Chance of lightning...0 percent. * CWR...................Zero. .Forecast days 3 through 7...... .TUESDAY NIGHT...Mostly clear. Lows 48 to 53. Northwest winds 15 to 25 mph with gusts to around 35 mph. .WEDNESDAY...Mostly clear. Lows 49 to 54. Highs 77 to 82. West winds 5 to 15 mph. .THURSDAY...Mostly clear. Lows 52 to 57. Highs 86 to 91. West winds 5 to 15 mph. .FRIDAY...Partly cloudy. Scattered showers. Lows 46 to 51. Highs 77 to 82. North winds 5 to 15 mph. .SATURDAY...Mostly cloudy. Scattered showers. Lows 42 to 47. Highs 68 to 73. .SUNDAY...Mostly sunny. Isolated showers. Highs 66 to 71. $$ WYZ274-071045- Sheridan County- 337 PM MDT Sun Sep 6 2026 .Tonight... * Sky/weather...........Mostly cloudy. Isolated rain showers overnight. * Min temperature.......55-60. * 24 hr trend.........8 degrees warmer. * Max humidity..........81-86 percent. * 24 hr trend.........Unchanged. * Wind (20 ft) * Slope/valley.........Southwest winds 5 to 15 mph. * Ridgetop.............South 10 to 15 mph. * Chance of lightning...5 percent. * CWR...................Less than 10 percent. .MONDAY... * Sky/weather...........Mostly sunny. Isolated rain showers in the morning, then isolated showers and thunderstorms in the afternoon. * Max temperature.......81-86. * 24 hr trend.........7 degrees cooler. * Min humidity..........21-26 percent. * 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...15 percent. * CWR...................Less than 10 percent. .MONDAY NIGHT... * Sky/weather...........Mostly clear. * Min temperature.......42-47. * 24 hr trend.........13 degrees cooler. * Max humidity..........69-74 percent. * 24 hr trend.........12 percent drier. * Wind (20 ft) * Slope/valley.........West winds 5 to 15 mph. * Ridgetop.............West 10 to 20 mph. * Chance of lightning...3 percent. * CWR...................Zero. .TUESDAY... * Sky/weather...........Sunny. * Max temperature.......75-80. * 24 hr trend.........6 degrees cooler. * Min humidity..........19-24 percent. * 24 hr trend.........2 percent drier. * Wind (20 ft) * Slope/valley.........Northwest winds 5 to 15 mph. * Ridgetop.............Northwest 10 to 20 mph. * Chance of lightning...0 percent. * CWR...................Zero. .Forecast days 3 through 7...... .TUESDAY NIGHT...Mostly clear. Lows 41 to 46. Northwest winds 5 to 15 mph. .WEDNESDAY...Mostly clear. Lows 43 to 48. Highs 76 to 81. Southwest winds 5 to 10 mph. .THURSDAY...Mostly clear. Lows 48 to 53. Highs 84 to 89. West winds 5 to 10 mph. .FRIDAY...Partly cloudy. Scattered showers. Lows 41 to 46. Highs 77 to 82. North winds 5 to 10 mph. .SATURDAY...Cooler. Mostly cloudy. Scattered showers. Lows 37 to 42. Highs 65 to 70. .SUNDAY...Mostly sunny. Isolated showers. Highs 66 to 71. $$ WYZ284-071045- Bighorn National Forest- 337 PM MDT Sun Sep 6 2026 .Tonight... * Sky/weather...........Mostly cloudy. Scattered rain showers overnight. * Min temperature.......45-50. * 24 hr trend.........3 degrees warmer. * Max humidity..........82-87 percent. * 24 hr trend.........8 percent wetter. * Wind (20 ft) * At Burgess Jct.......South winds 10 to 20 mph. Gusts up to 30 mph overnight. * Chance of lightning...5 percent. * CWR...................Less than 10 percent. .MONDAY... * Sky/weather...........Mostly sunny. Isolated rain showers in the morning, then isolated showers and thunderstorms in the afternoon. * Max temperature.......62-67. * 24 hr trend.........10 degrees cooler. * Min humidity..........25-30 percent. * 24 hr trend.........9 percent wetter. * Wind (20 ft) * At Burgess Jct.......Southwest winds 15 to 25 mph with gusts to around 45 mph. * Chance of lightning...15 percent. * CWR...................Less than 10 percent. .MONDAY NIGHT... * Sky/weather...........Mostly clear. * Min temperature.......34-39. * 24 hr trend.........11 degrees cooler. * Max humidity..........59-64 percent. * 24 hr trend.........23 percent drier. * Wind (20 ft) * At Burgess Jct.......Southwest winds 10 to 20 mph. Gusts up to 35 mph in the evening. * Chance of lightning...2 percent. * CWR...................Zero. .TUESDAY... * Sky/weather...........Sunny. * Max temperature.......58-63. * 24 hr trend.........4 degrees cooler. * Min humidity..........18-23 percent. * 24 hr trend.........7 percent drier. * Wind (20 ft) * At Burgess Jct.......West winds 15 to 25 mph with gusts to around 35 mph. * Chance of lightning...0 percent. * CWR...................Zero. .Forecast days 3 through 7...... .TUESDAY NIGHT...Mostly clear. Lows 30 to 35. West winds 5 to 15 mph with gusts to around 30 mph. .WEDNESDAY...Mostly clear. Lows 39 to 44. Highs 60 to 65. West winds 5 to 15 mph. .THURSDAY...Mostly clear. Lows 40 to 45. Highs 66 to 71. Southwest winds 10 to 20 mph with gusts to around 30 mph. .FRIDAY...Partly cloudy. Scattered showers. Lows 34 to 39. Highs 61 to 66. West winds 5 to 15 mph. .SATURDAY...Cooler. Mostly cloudy. Scattered showers and snow showers. Lows 30 to 35. Highs 51 to 56. .SUNDAY...Mostly sunny. Isolated showers and snow showers. Highs 51 to 56. $$ weather.gov/billings