Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS Billings, MT
Issued by NWS Billings, MT
379 FNUS55 KBYZ 281842 FWFBYZ Fire Weather Planning Forecast for SCen and SErn Montana National Weather Service Billings MT 1242 PM MDT Mon Sep 28 2026 .DISCUSSION... Isolated showers & thunderstorms are expected late this afternoon and evening, mainly over the mountains/foothills and possibly in far southeast MT. Expect dry & warmer weather Tuesday, with breezy west winds along the foothills west of Billings (gusts 30-40 mph). Above normal temperatures and breezy winds continue Wednesday, then a weak cold front brings cooler and more humid conditions w/ easterly winds on Thursday. Looking ahead, there are no significant precipitation events expected over the next 7 days. JKL MTZ123-291015- Gallatin National Forest- 1242 PM MDT Mon Sep 28 2026 .Tonight... * Sky/weather...........Mostly clear. * Min temperature.......36-46 at 5000 feet...31-41 at 7000 feet. * 24 hr trend.........2 degrees cooler. * Max humidity..........76-86 percent at 5000 feet...74-84 percent at 7000 feet. * 24 hr trend.........5 percent drier. * Wind (20 ft) * Slope/valley.........North winds 5 to 10 mph in the evening shifting to the southeast overnight. * Ridgetop.............West 5 to 15 mph. * Chance of lightning...4 percent. * CWR...................Zero. .TUESDAY... * Sky/weather...........Sunny. * Max temperature.......68-75 at 5000 feet...55-65 at 7000 feet. * 24 hr trend.........6 degrees warmer. * Min humidity..........20-30 percent at 5000 feet...25-35 percent at 7000 feet. * 24 hr trend.........14 percent drier. * Wind (20 ft) * Slope/valley.........Southeast winds 5 to 10 mph in the morning shifting to the west in the afternoon. * Ridgetop.............West 10 to 20 mph. * Chance of lightning...0 percent. * CWR...................Zero. .TUESDAY NIGHT... * Sky/weather...........Mostly clear. * Min temperature.......40-50 at 5000 feet...34-44 at 7000 feet. * 24 hr trend.........3 degrees warmer. * Max humidity..........63-73 percent at 5000 feet...68-78 percent at 7000 feet. * 24 hr trend.........9 percent drier. * Wind (20 ft) * Slope/valley.........South winds 5 to 10 mph. * Ridgetop.............West 10 to 20 mph. * Chance of lightning...0 percent. * CWR...................Zero. .WEDNESDAY... * Sky/weather...........Sunny. * Max temperature.......64-72 at 5000 feet...53-63 at 7000 feet. * 24 hr trend.........3 degrees cooler. * Min humidity..........28-38 percent at 5000 feet...39-49 percent at 7000 feet. * 24 hr trend.........11 percent wetter. * Wind (20 ft) * Slope/valley.........Southwest winds 5 to 10 mph in the morning shifting to the northwest in the afternoon. * Ridgetop.............West 10 to 20 mph. * Chance of lightning...0 percent. * CWR...................Zero. .Forecast days 3 through 7...... .WEDNESDAY NIGHT...Mostly clear. Lows 34 to 44. Light winds. .THURSDAY...Partly cloudy. Lows 39 to 49. Highs 65 to 75. Southwest winds 5 to 10 mph. .FRIDAY...Partly cloudy. Lows 40 to 50. Highs 68 to 77. Southwest winds 5 to 10 mph. .SATURDAY...Partly cloudy. Lows 34 to 44. Highs 62 to 72. South winds 5 to 10 mph. .SUNDAY...Partly cloudy. Lows 39 to 49. Highs 65 to 75. .MONDAY...Mostly sunny. Highs 70 to 79. $$ MTZ124-291015- Wheatland County/Sweet Grass County- 1242 PM MDT Mon Sep 28 2026 .Tonight... * Sky/weather...........Mostly clear. * Min temperature.......39-44. * 24 hr trend.........3 degrees warmer. * Max humidity..........75-80 percent. * 24 hr trend.........2 percent drier. * Wind (20 ft) * Plains...............West winds 10 to 20 mph. Gusts up to 30 mph overnight. * Chance of lightning...2 percent. * CWR...................Zero. .TUESDAY... * Sky/weather...........Sunny. * Max temperature.......72-77. * 24 hr trend.........4 degrees warmer. * Min humidity..........19-24 percent. * 24 hr trend.........8 percent drier. * Wind (20 ft) * Plains...............West winds 15 to 25 mph with gusts to around 40 mph. * Chance of lightning...0 percent. * CWR...................Zero. .TUESDAY NIGHT... * Sky/weather...........Partly cloudy. * Min temperature.......46-51. * 24 hr trend.........7 degrees warmer. * Max humidity..........69-74 percent. * 24 hr trend.........6 percent drier. * Wind (20 ft) * Plains...............West winds 10 to 20 mph. * Chance of lightning...0 percent. * CWR...................Zero. .WEDNESDAY... * Sky/weather...........Sunny. * Max temperature.......68-73. * 24 hr trend.........4 degrees cooler. * Min humidity..........32-37 percent. * 24 hr trend.........13 percent wetter. * Wind (20 ft) * Plains...............Northwest winds 15 to 25 mph. Gusts up to 35 mph in the afternoon. * Chance of lightning...1 percent. * CWR...................Zero. .Forecast days 3 through 7...... .WEDNESDAY NIGHT...Colder. Partly cloudy. Lows 37 to 42. Northeast winds 5 to 15 mph. .THURSDAY...Partly cloudy. Lows 41 to 46. Highs 66 to 71. Southeast winds 5 to 10 mph. .FRIDAY...Partly cloudy. Scattered showers. Lows 43 to 48. Highs 71 to 76. West winds 5 to 15 mph. .SATURDAY...Mostly clear. Lows 37 to 42. Highs 62 to 67. Northeast winds 5 to 15 mph. .SUNDAY...Partly cloudy. Lows 41 to 46. Highs 65 to 70. .MONDAY...Warmer, sunny. Highs 74 to 79. $$ MTZ125-291015- Stillwater County- 1242 PM MDT Mon Sep 28 2026 .Tonight... * Sky/weather...........Partly cloudy in the evening then clearing. * Min temperature.......41-46. * 24 hr trend.........1 degree warmer. * Max humidity..........74-79 percent. * 24 hr trend.........3 percent drier. * Wind (20 ft) * Plains...............Southwest winds 5 to 15 mph. * Chance of lightning...11 percent. * CWR...................Zero. .TUESDAY... * Sky/weather...........Sunny. * Max temperature.......73-78. * 24 hr trend.........7 degrees warmer. * Min humidity..........21-26 percent. * 24 hr trend.........14 percent drier. * Wind (20 ft) * Plains...............Southwest winds 5 to 15 mph in the morning shifting to the east in the afternoon. * Chance of lightning...0 percent. * CWR...................Zero. .TUESDAY NIGHT... * Sky/weather...........Mostly clear. * Min temperature.......45-50. * 24 hr trend.........4 degrees warmer. * Max humidity..........61-66 percent. * 24 hr trend.........13 percent drier. * Wind (20 ft) * Plains...............Southwest winds 5 to 10 mph. * Chance of lightning...0 percent. * CWR...................Zero. .WEDNESDAY... * Sky/weather...........Sunny. * Max temperature.......70-75. * 24 hr trend.........3 degrees cooler. * Min humidity..........29-34 percent. * 24 hr trend.........8 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...0 percent. * CWR...................Zero. .Forecast days 3 through 7...... .WEDNESDAY NIGHT...Partly cloudy. Lows 40 to 45. Northeast winds 5 to 10 mph. .THURSDAY...Partly cloudy. Lows 44 to 49. Highs 66 to 71. East winds 5 to 10 mph. .FRIDAY...Partly cloudy. Scattered showers. Lows 45 to 50. Highs 72 to 77. West winds 5 to 10 mph. .SATURDAY...Partly cloudy. Lows 39 to 44. Highs 63 to 68. East winds 5 to 10 mph. .SUNDAY...Partly cloudy. Lows 43 to 48. Highs 66 to 71. .MONDAY...Warmer. Mostly sunny. Highs 75 to 80. $$ MTZ126-291015- Beartooth Ranger District Custer National Forest- 1242 PM MDT Mon Sep 28 2026 .Tonight... * Sky/weather...........Mostly cloudy with scattered rain showers and isolated thunderstorms in the evening, then mostly clear overnight. * Min temperature.......42-49 at 5000 feet...36-46 at 7000 feet. * 24 hr trend.........4 degrees cooler. * Max humidity..........64-74 percent at 5000 feet...70-80 percent at 7000 feet. * 24 hr trend.........5 percent wetter. * Wind (20 ft) * Slope/valley.........West winds 5 to 15 mph. * Ridgetop.............West 5 to 15 mph. * Chance of lightning...15 percent. * CWR...................10 percent. .TUESDAY... * Sky/weather...........Sunny. * Max temperature.......65-75 at 5000 feet...59-69 at 7000 feet. * 24 hr trend.........7 degrees warmer. * Min humidity..........22-32 percent at 5000 feet...25-35 percent at 7000 feet. * 24 hr trend.........14 percent drier. * Wind (20 ft) * Slope/valley.........Southwest winds 5 to 15 mph in the morning shifting to the east 5 to 10 mph in the afternoon. * Ridgetop.............West 5 to 15 mph. * Chance of lightning...0 percent. * CWR...................Zero. .TUESDAY NIGHT... * Sky/weather...........Mostly clear. * Min temperature.......46-53 at 5000 feet...39-49 at 7000 feet. * 24 hr trend.........4 degrees warmer. * Max humidity..........49-59 percent at 5000 feet...52-62 percent at 7000 feet. * 24 hr trend.........18 percent drier. * Wind (20 ft) * Slope/valley.........Southwest winds 5 to 10 mph. * Ridgetop.............West 5 to 10 mph. * Chance of lightning...0 percent. * CWR...................Zero. .WEDNESDAY... * Sky/weather...........Sunny. * Max temperature.......64-72 at 5000 feet...55-65 at 7000 feet. * 24 hr trend.........4 degrees cooler. * Min humidity..........29-36 percent at 5000 feet...34-44 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 north 5 to 15 mph in the afternoon. * Ridgetop.............West 5 to 15 mph. * Chance of lightning...1 percent. * CWR...................Zero. .Forecast days 3 through 7...... .WEDNESDAY NIGHT...Partly cloudy. Lows 41 to 46. North winds 5 to 10 mph. .THURSDAY...Partly cloudy. Lows 45 to 52. Highs 63 to 70. West winds 5 to 10 mph. .FRIDAY...Partly cloudy. Scattered showers. Lows 46 to 52. Highs 67 to 75. West winds 5 to 10 mph. .SATURDAY...Partly cloudy. Lows 40 to 47. Highs 60 to 66. Northwest winds 5 to 10 mph. .SUNDAY...Partly cloudy. Lows 44 to 51. Highs 61 to 69. .MONDAY...Mostly sunny. Highs 67 to 77. $$ MTZ127-291015- Golden Valley County/Musselshell county- 1242 PM MDT Mon Sep 28 2026 .Tonight... * Sky/weather...........Mostly clear. * Min temperature.......44-49. * 24 hr trend.........2 degrees warmer. * Max humidity..........66-71 percent. * 24 hr trend.........8 percent wetter. * Wind (20 ft) * Plains...............Southeast winds 5 to 10 mph in the evening shifting to the southwest 5 to 15 mph overnight. * Chance of lightning...0 percent. * CWR...................Zero. .TUESDAY... * Sky/weather...........Sunny. * Max temperature.......70-75. * 24 hr trend.........7 degrees warmer. * Min humidity..........23-28 percent. * 24 hr trend.........14 percent drier. * Wind (20 ft) * Plains...............West winds 10 to 20 mph. * Chance of lightning...0 percent. * CWR...................Zero. .TUESDAY NIGHT... * Sky/weather...........Mostly clear. * Min temperature.......50-55. * 24 hr trend.........6 degrees warmer. * Max humidity..........57-62 percent. * 24 hr trend.........9 percent drier. * Wind (20 ft) * Plains...............West winds 5 to 15 mph. * Chance of lightning...0 percent. * CWR...................Zero. .WEDNESDAY... * Sky/weather...........Mostly sunny. * Max temperature.......65-70. * 24 hr trend.........5 degrees cooler. * Min humidity..........37-42 percent. * 24 hr trend.........14 percent wetter. * Wind (20 ft) * Plains...............Northwest winds 5 to 15 mph. * Chance of lightning...1 percent. * CWR...................Zero. .Forecast days 3 through 7...... .WEDNESDAY NIGHT...Colder. Partly cloudy. Lows 42 to 47. Northeast winds 5 to 15 mph. .THURSDAY...Mostly clear. Lows 45 to 50. Highs 60 to 65. Southeast winds 5 to 10 mph. .FRIDAY...Partly cloudy. Isolated showers. Lows 47 to 52. Highs 66 to 71. Northwest winds 5 to 10 mph. .SATURDAY...Partly cloudy. Lows 41 to 46. Highs 58 to 63. Northeast winds 5 to 15 mph. .SUNDAY...Partly cloudy. Lows 45 to 50. Highs 59 to 64. .MONDAY...Warmer. Mostly sunny. Highs 70 to 75. $$ MTZ128-291015- Yellowstone County- 1242 PM MDT Mon Sep 28 2026 .Tonight... * Sky/weather...........Mostly cloudy in the evening then clearing. * Min temperature.......45-50. * 24 hr trend.........2 degrees warmer. * Max humidity..........81-86 percent. * 24 hr trend.........4 percent wetter. * Wind (20 ft) * Plains...............North winds 5 to 10 mph in the evening shifting to the southwest 5 to 15 mph overnight. * Chance of lightning...2 percent. * CWR...................Zero. .TUESDAY... * Sky/weather...........Sunny. * Max temperature.......75-80. * 24 hr trend.........7 degrees warmer. * Min humidity..........22-27 percent. * 24 hr trend.........10 percent drier. * Wind (20 ft) * Plains...............Southwest winds 10 to 20 mph. Gusts up to 30 mph in the afternoon. * Chance of lightning...0 percent. * CWR...................Zero. .TUESDAY NIGHT... * Sky/weather...........Mostly clear. * Min temperature.......47-52. * 24 hr trend.........2 degrees warmer. * Max humidity..........69-74 percent. * 24 hr trend.........12 percent drier. * Wind (20 ft) * Plains...............West winds 5 to 10 mph. * Chance of lightning...0 percent. * CWR...................Zero. .WEDNESDAY... * Sky/weather...........Sunny. * Max temperature.......71-76. * 24 hr trend.........4 degrees cooler. * Min humidity..........33-38 percent. * 24 hr trend.........11 percent wetter. * Wind (20 ft) * Plains...............Northwest winds 5 to 15 mph. * Chance of lightning...0 percent. * CWR...................Zero. .Forecast days 3 through 7...... .WEDNESDAY NIGHT...Partly cloudy. Lows 43 to 48. Northeast winds 5 to 15 mph. .THURSDAY...Mostly clear. Lows 45 to 50. Highs 66 to 71. East winds 5 to 10 mph. .FRIDAY...Partly cloudy. Isolated showers. Lows 47 to 52. Highs 72 to 77. Northwest winds 5 to 10 mph. .SATURDAY...Partly cloudy. Lows 42 to 47. Highs 64 to 69. Northeast winds 5 to 15 mph. .SUNDAY...Partly cloudy. Lows 45 to 50. Highs 66 to 71. .MONDAY...Warmer. Mostly sunny. Highs 75 to 80. $$ MTZ129-291015- Crow Indian Reservation/Bighorn Canyon Rec Area- 1242 PM MDT Mon Sep 28 2026 .Tonight... * Sky/weather...........Mostly cloudy in the evening then clearing. * Min temperature.......44-50 at 5000 feet...42-47 at 7000 feet. * 24 hr trend.........2 degrees warmer. * Max humidity..........64-74 percent at 5000 feet...62-69 percent at 7000 feet. * 24 hr trend.........4 percent drier. * Wind (20 ft) * Slope/valley.........Southwest winds 5 to 10 mph. * Ridgetop.............West 10 to 20 mph. * Chance of lightning...4 percent. * CWR...................Zero. .TUESDAY... * Sky/weather...........Sunny. * Max temperature.......66-76 at 5000 feet...60-67 at 7000 feet. * 24 hr trend.........9 degrees warmer. * Min humidity..........24-30 percent at 5000 feet...26-34 percent at 7000 feet. * 24 hr trend.........17 percent drier. * Wind (20 ft) * Slope/valley.........West winds 5 to 10 mph. * Ridgetop.............West 15 to 25 mph. * Chance of lightning...0 percent. * CWR...................Zero. .TUESDAY NIGHT... * Sky/weather...........Mostly clear. * Min temperature.......47-53 at 5000 feet...46-51 at 7000 feet. * 24 hr trend.........3 degrees warmer. * Max humidity..........49-59 percent at 5000 feet...46-54 percent at 7000 feet. * 24 hr trend.........17 percent drier. * Wind (20 ft) * Slope/valley.........Southwest winds 5 to 10 mph in the evening becoming light overnight. * Ridgetop.............West 10 to 20 mph. * Chance of lightning...0 percent. * CWR...................Zero. .WEDNESDAY... * Sky/weather...........Sunny. * Max temperature.......62-72 at 5000 feet...56-63 at 7000 feet. * 24 hr trend.........5 degrees cooler. * Min humidity..........29-39 percent at 5000 feet...37-42 percent at 7000 feet. * 24 hr trend.........13 percent wetter. * Wind (20 ft) * Slope/valley.........Northwest winds 5 to 10 mph. * Ridgetop.............West 10 to 20 mph. * Chance of lightning...0 percent. * CWR...................Zero. .Forecast days 3 through 7...... .WEDNESDAY NIGHT...Partly cloudy. Lows 41 to 46. Northeast winds 5 to 10 mph. .THURSDAY...Mostly clear. Lows 45 to 52. Highs 61 to 71. Southeast winds 5 to 10 mph. .FRIDAY...Partly cloudy. Scattered showers. Lows 46 to 52. Highs 66 to 76. Southwest winds 5 to 10 mph. .SATURDAY...Cooler. Mostly clear. Lows 41 to 47. Highs 57 to 67. North winds 5 to 10 mph. .SUNDAY...Partly cloudy. Lows 46 to 52. Highs 59 to 69. .MONDAY...Warmer. Mostly sunny. Highs 68 to 78. $$ MTZ130-291015- Northern Rosebud/Northern Treasure Counties- 1242 PM MDT Mon Sep 28 2026 .Tonight... * Sky/weather...........Mostly cloudy in the evening then clearing. * Min temperature.......43-48. * 24 hr trend.........Unchanged. * Max humidity..........91-96 percent. * 24 hr trend.........7 percent wetter. * Wind (20 ft) * Plains...............West winds 5 to 10 mph. * Chance of lightning...0 percent. * CWR...................Zero. .TUESDAY... * Sky/weather...........Sunny. * Max temperature.......75-80. * 24 hr trend.........9 degrees warmer. * Min humidity..........24-29 percent. * 24 hr trend.........22 percent drier. * Wind (20 ft) * Plains...............West winds 5 to 15 mph. * Chance of lightning...0 percent. * CWR...................Zero. .TUESDAY NIGHT... * Sky/weather...........Mostly clear. * Min temperature.......47-52. * 24 hr trend.........4 degrees warmer. * Max humidity..........73-78 percent. * 24 hr trend.........18 percent drier. * Wind (20 ft) * Plains...............West winds 5 to 10 mph in the evening becoming light overnight. * Chance of lightning...0 percent. * CWR...................Zero. .WEDNESDAY... * Sky/weather...........Mostly sunny. * Max temperature.......69-74. * 24 hr trend.........6 degrees cooler. * Min humidity..........36-41 percent. * 24 hr trend.........12 percent wetter. * Wind (20 ft) * Plains...............Northwest winds 5 to 15 mph. * Chance of lightning...0 percent. * CWR...................Zero. .Forecast days 3 through 7...... .WEDNESDAY NIGHT...Partly cloudy. Lows 42 to 47. North winds 5 to 15 mph. .THURSDAY...Partly cloudy. Lows 43 to 48. Highs 65 to 70. East winds 5 to 15 mph. .FRIDAY...Partly cloudy. Isolated showers. Lows 46 to 51. Highs 71 to 76. North winds 5 to 10 mph. .SATURDAY...Partly cloudy. Lows 41 to 46. Highs 63 to 68. North winds 5 to 10 mph. .SUNDAY...Partly cloudy. Lows 44 to 49. Highs 65 to 70. .MONDAY...Warmer. Mostly sunny. Highs 73 to 78. $$ MTZ131-291015- Northern Cheyenne Indian Reservation/Ashland Ranger District Custer Natl Forest- 1242 PM MDT Mon Sep 28 2026 .Tonight... * Sky/weather...........Mostly cloudy. * Min temperature.......43-48. * 24 hr trend.........6 degrees cooler. * Max humidity..........88-93 percent. * 24 hr trend.........4 percent wetter. * Wind (20 ft) * Slope/valley.........West winds 5 to 10 mph. * Ridgetop.............Northwest 10 to 20 mph. * Chance of lightning...3 percent. * CWR...................Zero. .TUESDAY... * Sky/weather...........Sunny. * Max temperature.......76-81. * 24 hr trend.........8 degrees warmer. * Min humidity..........20-25 percent. * 24 hr trend.........18 percent drier. * Wind (20 ft) * Slope/valley.........West winds 5 to 10 mph. * Ridgetop.............West 15 to 25 mph. * Chance of lightning...0 percent. * CWR...................Zero. .TUESDAY NIGHT... * Sky/weather...........Mostly clear. * Min temperature.......44-49. * 24 hr trend.........1 degree warmer. * Max humidity..........67-72 percent. * 24 hr trend.........21 percent drier. * Wind (20 ft) * Slope/valley.........West winds 5 to 10 mph in the evening becoming light overnight. * Ridgetop.............West 15 to 25 mph. * Chance of lightning...0 percent. * CWR...................Zero. .WEDNESDAY... * Sky/weather...........Sunny. * Max temperature.......71-76. * 24 hr trend.........5 degrees cooler. * Min humidity..........29-34 percent. * 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...0 percent. * CWR...................Zero. .Forecast days 3 through 7...... .WEDNESDAY NIGHT...Partly cloudy. Lows 41 to 46. North winds 5 to 15 mph. .THURSDAY...Partly cloudy. Lows 44 to 49. Highs 68 to 73. Southeast winds 5 to 15 mph. .FRIDAY...Partly cloudy. Isolated showers. Lows 45 to 50. Highs 74 to 79. South winds 5 to 10 mph. .SATURDAY...Mostly clear. Lows 39 to 44. Highs 65 to 70. North winds 5 to 15 mph. .SUNDAY...Partly cloudy. Lows 43 to 48. Highs 68 to 73. .MONDAY...Warmer. Mostly sunny. Highs 76 to 81. $$ MTZ132-291015- Custer County- 1242 PM MDT Mon Sep 28 2026 .Tonight... * Sky/weather...........Mostly cloudy. * Min temperature.......46-51. * 24 hr trend.........5 degrees cooler. * Max humidity..........95-100 percent. * 24 hr trend.........4 percent wetter. * Wind (20 ft) * Plains...............Northwest winds 5 to 10 mph. * Chance of lightning...5 percent. * CWR...................Zero. .TUESDAY... * Sky/weather...........Sunny. * Max temperature.......73-78. * 24 hr trend.........8 degrees warmer. * Min humidity..........26-31 percent. * 24 hr trend.........36 percent drier. * Wind (20 ft) * Plains...............West winds 5 to 15 mph. * Chance of lightning...0 percent. * CWR...................Zero. .TUESDAY NIGHT... * Sky/weather...........Mostly clear. * Min temperature.......48-53. * 24 hr trend.........2 degrees warmer. * Max humidity..........64-69 percent. * 24 hr trend.........31 percent drier. * Wind (20 ft) * Plains...............Southwest winds 5 to 10 mph. * Chance of lightning...0 percent. * CWR...................Zero. .WEDNESDAY... * Sky/weather...........Sunny. * Max temperature.......68-73. * 24 hr trend.........5 degrees cooler. * Min humidity..........37-42 percent. * 24 hr trend.........11 percent wetter. * Wind (20 ft) * Plains...............Northwest winds 5 to 15 mph. * Chance of lightning...0 percent. * CWR...................Zero. .Forecast days 3 through 7...... .WEDNESDAY NIGHT...Partly cloudy. Lows 41 to 46. North winds 5 to 15 mph. .THURSDAY...Partly cloudy. Lows 44 to 49. Highs 61 to 66. Southeast winds 5 to 15 mph. .FRIDAY...Partly cloudy. Isolated showers. Lows 46 to 51. Highs 69 to 74. South winds 5 to 10 mph. .SATURDAY...Partly cloudy. Lows 40 to 45. Highs 61 to 66. North winds 5 to 15 mph. .SUNDAY...Partly cloudy. Lows 44 to 49. Highs 61 to 66. .MONDAY...Warmer. Mostly sunny. Highs 69 to 74. $$ MTZ133-291015- Sioux Ranger District Custer National Forest- 1242 PM MDT Mon Sep 28 2026 .Tonight... * Sky/weather...........Mostly cloudy. Isolated showers and thunderstorms in the evening. * Min temperature.......49-54. * 24 hr trend.........3 degrees cooler. * Max humidity..........100 percent. * 24 hr trend.........4 percent wetter. * Wind (20 ft) * Plains...............Northwest winds 5 to 10 mph. * Chance of lightning...15 percent. * CWR...................Less than 10 percent. .TUESDAY... * Sky/weather...........Sunny. * Max temperature.......74-79. * 24 hr trend.........5 degrees warmer. * Min humidity..........28-33 percent. * 24 hr trend.........32 percent drier. * Wind (20 ft) * Plains...............West winds 5 to 15 mph. * Chance of lightning...0 percent. * CWR...................Zero. .TUESDAY NIGHT... * Sky/weather...........Mostly clear. * Min temperature.......48-53. * 24 hr trend.........1 degree cooler. * Max humidity..........66-71 percent. * 24 hr trend.........32 percent drier. * Wind (20 ft) * Plains...............Southwest winds 5 to 10 mph. * Chance of lightning...0 percent. * CWR...................Zero. .WEDNESDAY... * Sky/weather...........Sunny. * Max temperature.......72-77. * 24 hr trend.........2 degrees cooler. * Min humidity..........33-38 percent. * 24 hr trend.........5 percent wetter. * Wind (20 ft) * Plains...............Northwest winds 5 to 15 mph. Gusts up to 30 mph in the afternoon. * Chance of lightning...0 percent. * CWR...................Zero. .Forecast days 3 through 7...... .WEDNESDAY NIGHT...Partly cloudy. Lows 43 to 48. North winds 5 to 15 mph with gusts to around 30 mph. .THURSDAY...Cooler. Partly cloudy. Lows 44 to 49. Highs 62 to 67. Southeast winds 5 to 15 mph with gusts to around 30 mph. .FRIDAY...Partly cloudy. Isolated showers. Lows 47 to 52. Highs 71 to 76. South winds 5 to 15 mph. .SATURDAY...Mostly clear. Lows 40 to 45. Highs 64 to 69. North winds 5 to 15 mph with gusts to around 30 mph. .SUNDAY...Partly cloudy. Lows 42 to 47. Highs 61 to 66. .MONDAY...Warmer, sunny. Highs 71 to 76. $$ WYZ274-291015- Sheridan County- 1242 PM MDT Mon Sep 28 2026 .Tonight... * Sky/weather...........Partly cloudy. Isolated rain showers in the evening. * Min temperature.......38-43. * 24 hr trend.........9 degrees cooler. * Max humidity..........100 percent. * 24 hr trend.........23 percent wetter. * Wind (20 ft) * Slope/valley.........West winds 5 to 10 mph. * Ridgetop.............West 5 to 15 mph. * Chance of lightning...6 percent. * CWR...................Less than 10 percent. .TUESDAY... * Sky/weather...........Sunny. * Max temperature.......75-80. * 24 hr trend.........10 degrees warmer. * Min humidity..........24-29 percent. * 24 hr trend.........14 percent drier. * Wind (20 ft) * Slope/valley.........Light winds in the morning becoming northeast 5 to 10 mph in the afternoon. * Ridgetop.............West 5 to 15 mph. * Chance of lightning...0 percent. * CWR...................Zero. .TUESDAY NIGHT... * Sky/weather...........Mostly clear. * Min temperature.......40-45. * 24 hr trend.........2 degrees warmer. * Max humidity..........74-79 percent. * 24 hr trend.........24 percent drier. * Wind (20 ft) * Slope/valley.........West winds 5 to 10 mph in the evening becoming light overnight. * Ridgetop.............West 5 to 10 mph. * Chance of lightning...0 percent. * CWR...................Zero. .WEDNESDAY... * Sky/weather...........Sunny. * Max temperature.......70-75. * 24 hr trend.........5 degrees cooler. * Min humidity..........31-36 percent. * 24 hr trend.........7 percent wetter. * Wind (20 ft) * Slope/valley.........Light winds in the morning becoming north 5 to 15 mph in the afternoon. * Ridgetop.............West 5 to 15 mph. * Chance of lightning...1 percent. * CWR...................Zero. .Forecast days 3 through 7...... .WEDNESDAY NIGHT...Partly cloudy. Lows 38 to 43. North winds 5 to 10 mph. .THURSDAY...Partly cloudy. Lows 40 to 45. Highs 69 to 74. Southeast winds 5 to 10 mph. .FRIDAY...Partly cloudy. Isolated showers. Lows 42 to 47. Highs 74 to 79. Light winds. .SATURDAY...Mostly clear. Lows 37 to 42. Highs 65 to 70. North winds 5 to 10 mph. .SUNDAY...Partly cloudy. Lows 40 to 45. Highs 67 to 72. .MONDAY...Warmer, sunny. Highs 75 to 80. $$ WYZ284-291015- Bighorn National Forest- 1242 PM MDT Mon Sep 28 2026 .Tonight... * Sky/weather...........Partly cloudy. Isolated rain showers in the evening. * Min temperature.......32-37. * 24 hr trend.........7 degrees cooler. * Max humidity..........100 percent. * 24 hr trend.........30 percent wetter. * Wind (20 ft) * At Burgess Jct.......Southwest winds 5 to 10 mph. * Chance of lightning...8 percent. * CWR...................Less than 10 percent. .TUESDAY... * Sky/weather...........Sunny. * Max temperature.......59-64. * 24 hr trend.........4 degrees warmer. * Min humidity..........29-34 percent. * 24 hr trend.........18 percent drier. * Wind (20 ft) * At Burgess Jct.......Southwest winds 5 to 15 mph. * Chance of lightning...0 percent. * CWR...................Zero. .TUESDAY NIGHT... * Sky/weather...........Mostly clear. * Min temperature.......35-40. * 24 hr trend.........3 degrees warmer. * Max humidity..........68-73 percent. * 24 hr trend.........30 percent drier. * Wind (20 ft) * At Burgess Jct.......South winds 5 to 10 mph. * Chance of lightning...0 percent. * CWR...................Zero. .WEDNESDAY... * Sky/weather...........Sunny. * Max temperature.......55-60. * 24 hr trend.........4 degrees cooler. * Min humidity..........38-43 percent. * 24 hr trend.........9 percent wetter. * Wind (20 ft) * At Burgess Jct.......West winds 5 to 10 mph in the morning shifting to the north 10 to 20 mph in the afternoon. * Chance of lightning...2 percent. * CWR...................Zero. .Forecast days 3 through 7...... .WEDNESDAY NIGHT...Partly cloudy. Lows 29 to 34. Northeast winds 5 to 15 mph. .THURSDAY...Mostly clear. Lows 34 to 39. Highs 56 to 61. Southwest winds 5 to 15 mph. .FRIDAY...Partly cloudy. Isolated showers. Lows 34 to 39. Highs 60 to 65. Southwest winds 5 to 15 mph. .SATURDAY...Mostly clear. Lows 30 to 35. Highs 52 to 57. West winds 5 to 15 mph. .SUNDAY...Partly cloudy. Lows 35 to 40. Highs 56 to 61. .MONDAY...Sunny. Highs 61 to 66. $$ weather.gov/billings