Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS Billings, MT
Issued by NWS Billings, MT
231 FNUS55 KBYZ 292033 FWFBYZ Fire Weather Planning Forecast for SCen and SErn Montana National Weather Service Billings MT 233 PM MDT Fri Aug 29 2025 .DISCUSSION... Showers/t-storms, elevated humidity and slightly cooler than normal temperatures will continue through Saturday, though by tomorrow drier air will begin to affect western zones. The probability of additional wetting rain is 30-60%, and some showers may produce heavy rain. Warmer and drier conditions expected Sunday and Monday, with western zones likely to see afternoon RHs fall below 20%. Cold front and cooler conditions possible Tuesday-Thursday. JKL/LT MTZ123-301015- Gallatin National Forest- 233 PM MDT Fri Aug 29 2025 .Tonight... * Sky/weather...........Mostly cloudy with isolated rain showers. * Min temperature.......46-56 at 5000 feet...40-50 at 7000 feet. * 24 hr trend.........2 degrees warmer. * Max humidity..........79-89 percent at 5000 feet...75-85 percent at 7000 feet. * 24 hr trend.........28 percent drier. * Wind (20 ft) * Slope/valley.........Northwest winds 5 to 10 mph in the evening shifting to the south overnight. * Ridgetop.............Northwest 5 to 15 mph. * Chance of lightning...11 percent. * CWR...................Less than 10 percent. .SATURDAY... * Sky/weather...........Sunny. * Max temperature.......73-83 at 5000 feet...61-71 at 7000 feet. * 24 hr trend.........3 degrees warmer. * Min humidity..........25-35 percent at 5000 feet...28-38 percent at 7000 feet. * 24 hr trend.........14 percent drier. * Wind (20 ft) * Slope/valley.........Southwest winds 5 to 10 mph in the morning shifting to the northwest in the afternoon. * Ridgetop.............Northwest 10 to 20 mph. * Chance of lightning...6 percent. * CWR...................Zero. .SATURDAY NIGHT... * Sky/weather...........Mostly clear. * Min temperature.......47-57 at 5000 feet...42-52 at 7000 feet. * 24 hr trend.........3 degrees warmer. * Max humidity..........53-63 percent at 5000 feet...55-65 percent at 7000 feet. * 24 hr trend.........26 percent drier. * Wind (20 ft) * Slope/valley.........Southeast winds 5 to 10 mph. * Ridgetop.............Northwest 5 to 15 mph. * Chance of lightning...1 percent. * CWR...................Zero. .SUNDAY... * Sky/weather...........Sunny. * Max temperature.......77-86 at 5000 feet...66-76 at 7000 feet. * 24 hr trend.........4 degrees warmer. * Min humidity..........19-24 percent. * 24 hr trend.........6 percent drier. * Wind (20 ft) * Slope/valley.........South winds 5 to 10 mph in the morning shifting to the northwest in the afternoon. * Ridgetop.............Northwest 5 to 10 mph. * Chance of lightning...2 percent. * CWR...................Zero. .Forecast days 3 through 7...... .SUNDAY NIGHT...Mostly clear. Lows 47 to 57. Southeast winds 5 to 10 mph. .MONDAY...Mostly clear. Lows 47 to 57. Highs 78 to 88. Southeast winds 5 to 10 mph. .TUESDAY...Mostly clear. Lows 46 to 56. Highs 77 to 87. Southeast winds 5 to 10 mph. .WEDNESDAY...Mostly clear. Lows 45 to 55. Highs 73 to 83. Northeast winds 5 to 10 mph. .THURSDAY...Partly cloudy. Lows 45 to 55. Highs 75 to 85. .FRIDAY...Mostly sunny. Highs 76 to 86. $$ MTZ124-301015- Wheatland County/Sweet Grass County- 233 PM MDT Fri Aug 29 2025 .Tonight... * Sky/weather...........Mostly cloudy. Scattered showers and thunderstorms in the evening, then isolated rain showers overnight. Patchy fog overnight. * Min temperature.......48-53. * 24 hr trend.........9 degrees cooler. * Max humidity..........93-98 percent. * 24 hr trend.........2 percent wetter. * Wind (20 ft) * Plains...............Northeast winds 5 to 10 mph in the evening shifting to the west overnight. * Chance of lightning...32 percent. * CWR...................30 percent. .SATURDAY... * Sky/weather...........Mostly sunny. Patchy fog in the morning. Scattered sprinkles and isolated thunderstorms in the afternoon. * Max temperature.......77-82. * 24 hr trend.........5 degrees warmer. * Min humidity..........32-37 percent. * 24 hr trend.........20 percent drier. * Wind (20 ft) * Plains...............Northwest winds 5 to 15 mph. * Chance of lightning...18 percent. * CWR...................Zero. .SATURDAY NIGHT... * Sky/weather...........Mostly clear. * Min temperature.......47-52. * 24 hr trend.........1 degree cooler. * Max humidity..........66-71 percent. * 24 hr trend.........27 percent drier. * Wind (20 ft) * Plains...............Northwest winds 5 to 10 mph. * Chance of lightning...5 percent. * CWR...................Zero. .SUNDAY... * Sky/weather...........Sunny. * Max temperature.......82-87. * 24 hr trend.........5 degrees warmer. * Min humidity..........20-25 percent. * 24 hr trend.........12 percent drier. * Wind (20 ft) * Plains...............West winds 5 to 15 mph. * Chance of lightning...3 percent. * CWR...................Zero. .Forecast days 3 through 7...... .SUNDAY NIGHT...Mostly clear. Lows 49 to 54. Northwest winds 5 to 15 mph. .MONDAY...Mostly clear. Lows 48 to 53. Highs 82 to 87. North winds 5 to 15 mph. .TUESDAY...Mostly clear. Isolated showers and thunderstorms. Lows 47 to 52. Highs 80 to 85. North winds 5 to 15 mph. .WEDNESDAY...Mostly clear. Lows 46 to 51. Highs 75 to 80. North winds 5 to 15 mph. .THURSDAY...Mostly clear. Lows 45 to 50. Highs 78 to 83. .FRIDAY...Mostly sunny. Highs 80 to 85. $$ MTZ125-301015- Stillwater County- 233 PM MDT Fri Aug 29 2025 .Tonight... * Sky/weather...........Mostly cloudy. Scattered rain showers and isolated thunderstorms in the evening, then isolated rain showers overnight. * Min temperature.......50-55. * 24 hr trend.........5 degrees cooler. * Max humidity..........80-85 percent. * 24 hr trend.........11 percent drier. * Wind (20 ft) * Plains...............West winds 5 to 10 mph. * Chance of lightning...24 percent. * CWR...................20 percent. .SATURDAY... * Sky/weather...........Mostly sunny. Scattered sprinkles in the morning, then scattered rain showers and isolated thunderstorms in the afternoon. * Max temperature.......79-84. * 24 hr trend.........2 degrees warmer. * Min humidity..........27-32 percent. * 24 hr trend.........9 percent drier. * Wind (20 ft) * Plains...............Northwest winds 5 to 10 mph. * Chance of lightning...23 percent. * CWR...................Zero. .SATURDAY NIGHT... * Sky/weather...........Mostly clear. * Min temperature.......52-57. * 24 hr trend.........2 degrees warmer. * Max humidity..........52-57 percent. * 24 hr trend.........28 percent drier. * Wind (20 ft) * Plains...............Southwest winds 5 to 10 mph. * Chance of lightning...5 percent. * CWR...................Zero. .SUNDAY... * Sky/weather...........Sunny. * Max temperature.......83-88. * 24 hr trend.........4 degrees warmer. * Min humidity..........18-23 percent. * 24 hr trend.........9 percent drier. * Wind (20 ft) * Plains...............Southwest winds 5 to 10 mph in the morning shifting to the north in the afternoon. * Chance of lightning...4 percent. * CWR...................Zero. .Forecast days 3 through 7...... .SUNDAY NIGHT...Mostly clear. Lows 52 to 57. West winds 5 to 10 mph. .MONDAY...Mostly clear. Lows 53 to 58. Highs 83 to 88. Southwest winds 5 to 10 mph. .TUESDAY...Mostly clear. Isolated showers. Lows 51 to 56. Highs 82 to 87. Northwest winds 5 to 10 mph. .WEDNESDAY...Partly cloudy. Isolated showers. Lows 50 to 55. Highs 77 to 82. North winds 5 to 10 mph. .THURSDAY...Partly cloudy. Lows 49 to 54. Highs 80 to 85. .FRIDAY...Mostly sunny. Highs 81 to 86. $$ MTZ126-301015- Beartooth Ranger District Custer National Forest- 233 PM MDT Fri Aug 29 2025 .Tonight... * Sky/weather...........Mostly cloudy. Isolated showers and thunderstorms in the evening, then isolated rain showers overnight. * Min temperature.......51-58 at 5000 feet...43-53 at 7000 feet. * 24 hr trend.........3 degrees warmer. * Max humidity..........70-80 percent at 5000 feet...67-77 percent at 7000 feet. * 24 hr trend.........20 percent drier. * Wind (20 ft) * Slope/valley.........Northwest winds 5 to 10 mph. * Ridgetop.............Northwest 5 to 15 mph. * Chance of lightning...21 percent. * CWR...................20 percent. .SATURDAY... * Sky/weather...........Mostly sunny. Scattered sprinkles in the morning, then isolated showers and thunderstorms in the afternoon. * Max temperature.......71-80 at 5000 feet...63-73 at 7000 feet. * 24 hr trend.........3 degrees warmer. * Min humidity..........31-41 percent at 5000 feet...35-45 percent at 7000 feet. * 24 hr trend.........17 percent drier. * Wind (20 ft) * Slope/valley.........Northwest winds 5 to 10 mph. * Ridgetop.............Northwest 10 to 20 mph. * Chance of lightning...23 percent. * CWR...................10 percent. .SATURDAY NIGHT... * Sky/weather...........Mostly clear. * Min temperature.......52-60 at 5000 feet...44-54 at 7000 feet. * 24 hr trend.........2 degrees warmer. * Max humidity..........48-53 percent. * 24 hr trend.........23 percent drier. * Wind (20 ft) * Slope/valley.........West winds 5 to 15 mph. * Ridgetop.............Northwest 10 to 20 mph. * Chance of lightning...7 percent. * CWR...................Zero. .SUNDAY... * Sky/weather...........Sunny. * Max temperature.......75-85 at 5000 feet...67-77 at 7000 feet. * 24 hr trend.........4 degrees warmer. * Min humidity..........18-28 percent at 5000 feet...22-32 percent at 7000 feet. * 24 hr trend.........11 percent drier. * Wind (20 ft) * Slope/valley.........West winds 5 to 15 mph in the morning shifting to the north 5 to 10 mph in the afternoon. * Ridgetop.............Northwest 5 to 15 mph. * Chance of lightning...5 percent. * CWR...................Zero. .Forecast days 3 through 7...... .SUNDAY NIGHT...Mostly clear. Lows 53 to 61. West winds 5 to 10 mph. .MONDAY...Mostly clear. Lows 53 to 61. Highs 76 to 85. Northwest winds 5 to 10 mph. .TUESDAY...Partly cloudy. Isolated showers and thunderstorms. Lows 51 to 58. Highs 75 to 84. Northwest winds 5 to 15 mph. .WEDNESDAY...Partly cloudy. Isolated showers and thunderstorms. Lows 51 to 57. Highs 70 to 79. Northwest winds 5 to 15 mph. .THURSDAY...Partly cloudy. Lows 50 to 57. Highs 72 to 82. .FRIDAY...Mostly sunny. Highs 74 to 83. $$ MTZ127-301015- Golden Valley County/Musselshell county- 233 PM MDT Fri Aug 29 2025 .Tonight... * Sky/weather...........Mostly cloudy. Scattered showers and thunderstorms in the evening, then scattered rain showers overnight. Patchy fog through the night. * Min temperature.......55-60. * 24 hr trend.........3 degrees cooler. * Max humidity..........86-91 percent. * 24 hr trend.........2 percent drier. * Wind (20 ft) * Plains...............North winds 5 to 10 mph in the evening becoming light overnight. * Chance of lightning...29 percent. * CWR...................20 percent. .SATURDAY... * Sky/weather...........Mostly sunny. Patchy fog in the morning. Scattered rain showers in the morning, then isolated showers and thunderstorms in the afternoon. * Max temperature.......75-80. * 24 hr trend.........4 degrees warmer. * Min humidity..........41-46 percent. * 24 hr trend.........22 percent drier. * Wind (20 ft) * Plains...............Northwest winds 5 to 10 mph. * Chance of lightning...15 percent. * CWR...................10 percent. .SATURDAY NIGHT... * Sky/weather...........Mostly clear. * Min temperature.......56-61. * 24 hr trend.........1 degree warmer. * Max humidity..........65-70 percent. * 24 hr trend.........21 percent drier. * Wind (20 ft) * Plains...............East winds 5 to 10 mph in the evening shifting to the south overnight. * Chance of lightning...5 percent. * CWR...................Zero. .SUNDAY... * Sky/weather...........Sunny. * Max temperature.......82-87. * 24 hr trend.........7 degrees warmer. * Min humidity..........23-28 percent. * 24 hr trend.........18 percent drier. * Wind (20 ft) * Plains...............West winds 5 to 10 mph. * Chance of lightning...2 percent. * CWR...................Zero. .Forecast days 3 through 7...... .SUNDAY NIGHT...Mostly clear. Lows 57 to 62. North winds 5 to 10 mph. .MONDAY...Mostly clear. Lows 56 to 61. Highs 81 to 86. North winds 5 to 10 mph. .TUESDAY...Partly cloudy. Isolated showers and thunderstorms. Lows 52 to 57. Highs 79 to 84. North winds 5 to 15 mph. .WEDNESDAY...Partly cloudy. Lows 49 to 54. Highs 72 to 77. Northeast winds 5 to 10 mph. .THURSDAY...Mostly clear. Lows 50 to 55. Highs 76 to 81. .FRIDAY...Sunny. Highs 78 to 83. $$ MTZ128-301015- Yellowstone County- 233 PM MDT Fri Aug 29 2025 .Tonight... * Sky/weather...........Mostly cloudy. Scattered showers and thunderstorms in the evening, then isolated rain showers overnight. Patchy fog overnight. * Min temperature.......55-60. * 24 hr trend.........6 degrees cooler. * Max humidity..........88-93 percent. * 24 hr trend.........Unchanged. * Wind (20 ft) * Plains...............Northwest winds 5 to 10 mph. * Chance of lightning...29 percent. * CWR...................30 percent. .SATURDAY... * Sky/weather...........Mostly sunny. Patchy fog in the morning. Isolated rain showers in the morning, then isolated showers and thunderstorms in the afternoon. * Max temperature.......80-85. * 24 hr trend.........3 degrees warmer. * Min humidity..........36-41 percent. * 24 hr trend.........16 percent drier. * Wind (20 ft) * Plains...............Northwest winds 5 to 10 mph. * Chance of lightning...17 percent. * CWR...................Less than 10 percent. .SATURDAY NIGHT... * Sky/weather...........Mostly clear. * Min temperature.......55-60. * 24 hr trend.........Unchanged. * Max humidity..........64-69 percent. * 24 hr trend.........24 percent drier. * Wind (20 ft) * Plains...............East winds 5 to 10 mph in the evening shifting to the southwest overnight. * Chance of lightning...4 percent. * CWR...................Zero. .SUNDAY... * Sky/weather...........Sunny. * Max temperature.......86-91. * 24 hr trend.........6 degrees warmer. * Min humidity..........19-24 percent. * 24 hr trend.........17 percent drier. * Wind (20 ft) * Plains...............West winds 5 to 10 mph. * Chance of lightning...2 percent. * CWR...................Zero. .Forecast days 3 through 7...... .SUNDAY NIGHT...Mostly clear. Lows 55 to 60. Northwest winds 5 to 10 mph. .MONDAY...Mostly clear. Lows 55 to 60. Highs 85 to 90. North winds 5 to 10 mph. .TUESDAY...Mostly clear. Isolated showers and thunderstorms. Lows 52 to 57. Highs 84 to 89. North winds 5 to 15 mph. .WEDNESDAY...Partly cloudy. Lows 50 to 55. Highs 77 to 82. Northeast winds 5 to 15 mph. .THURSDAY...Partly cloudy. Lows 51 to 56. Highs 80 to 85. .FRIDAY...Sunny. Highs 83 to 88. $$ MTZ129-301015- Crow Indian Reservation/Bighorn Canyon Rec Area- 233 PM MDT Fri Aug 29 2025 .Tonight... * Sky/weather...........Mostly cloudy. Scattered showers and thunderstorms in the evening, then scattered rain showers overnight. Patchy fog overnight. * Min temperature.......53-58 at 5000 feet...49-54 at 7000 feet. * 24 hr trend.........Unchanged. * Max humidity..........84-89 percent. * 24 hr trend.........14 percent drier. * Wind (20 ft) * Slope/valley.........Northeast winds 5 to 10 mph in the evening shifting to the southwest overnight. * Ridgetop.............North 5 to 10 mph. * Chance of lightning...35 percent. * CWR...................30 percent. .SATURDAY... * Sky/weather...........Mostly sunny. Patchy fog in the morning. Scattered rain showers and isolated thunderstorms in the morning, then isolated showers and thunderstorms in the afternoon. * Max temperature.......70-80 at 5000 feet...60-69 at 7000 feet. * 24 hr trend.........2 degrees warmer. * Min humidity..........35-45 percent at 5000 feet...45-55 percent at 7000 feet. * 24 hr trend.........12 percent drier. * Wind (20 ft) * Slope/valley.........Northwest winds 5 to 10 mph. * Ridgetop.............Northwest 5 to 10 mph. * Chance of lightning...19 percent. * CWR...................10 percent. .SATURDAY NIGHT... * Sky/weather...........Mostly clear. * Min temperature.......54-60 at 5000 feet...51-56 at 7000 feet. * 24 hr trend.........1 degree warmer. * Max humidity..........57-67 percent at 5000 feet...52-59 percent at 7000 feet. * 24 hr trend.........17 percent drier. * Wind (20 ft) * Slope/valley.........Southeast winds 5 to 10 mph. * Ridgetop.............Northwest 10 to 20 mph. * Chance of lightning...7 percent. * CWR...................Zero. .SUNDAY... * Sky/weather...........Sunny. * Max temperature.......75-85 at 5000 feet...65-74 at 7000 feet. * 24 hr trend.........7 degrees warmer. * Min humidity..........20-30 percent at 5000 feet...25-35 percent at 7000 feet. * 24 hr trend.........21 percent drier. * Wind (20 ft) * Slope/valley.........Southwest winds 5 to 10 mph in the morning shifting to the northwest 5 to 15 mph in the afternoon. * Ridgetop.............Northwest 10 to 20 mph. * Chance of lightning...3 percent. * CWR...................Zero. .Forecast days 3 through 7...... .SUNDAY NIGHT...Mostly clear. Lows 55 to 60. South winds 5 to 10 mph. .MONDAY...Mostly clear. Lows 54 to 60. Highs 75 to 85. Northwest winds 5 to 10 mph. .TUESDAY...Partly cloudy. Scattered showers and isolated thunderstorms. Lows 52 to 57. Highs 74 to 84. North winds 5 to 15 mph. .WEDNESDAY...Partly cloudy. Lows 48 to 56. Highs 68 to 78. North winds 5 to 10 mph. .THURSDAY...Partly cloudy. Lows 50 to 56. Highs 71 to 81. .FRIDAY...Sunny. Highs 73 to 83. $$ MTZ130-301015- Northern Rosebud/Northern Treasure Counties- 233 PM MDT Fri Aug 29 2025 .Tonight... * Sky/weather...........Mostly cloudy. Scattered showers and thunderstorms in the evening, then scattered rain showers overnight. Patchy fog overnight. * Min temperature.......58-63. * 24 hr trend.........2 degrees cooler. * Max humidity..........86-91 percent. * 24 hr trend.........1 percent wetter. * Wind (20 ft) * Plains...............North winds 5 to 10 mph. * Chance of lightning...26 percent. * CWR...................20 percent. .SATURDAY... * Sky/weather...........Patchy fog in the morning. Mostly cloudy with scattered rain showers and isolated thunderstorms in the morning, then mostly sunny with isolated showers and thunderstorms in the afternoon. * Max temperature.......77-82. * 24 hr trend.........Unchanged. * Min humidity..........47-52 percent. * 24 hr trend.........2 percent wetter. * Wind (20 ft) * Plains...............Southwest winds 5 to 10 mph in the morning shifting to the northeast in the afternoon. * Chance of lightning...22 percent. * CWR...................30 percent. .SATURDAY NIGHT... * Sky/weather...........Partly cloudy. Isolated showers and thunderstorms in the evening. * Min temperature.......53-58. * 24 hr trend.........5 degrees cooler. * Max humidity..........85-90 percent. * 24 hr trend.........1 percent drier. * Wind (20 ft) * Plains...............East winds 5 to 10 mph in the evening becoming light overnight. * Chance of lightning...15 percent. * CWR...................Zero. .SUNDAY... * Sky/weather...........Sunny. * Max temperature.......84-89. * 24 hr trend.........7 degrees warmer. * Min humidity..........24-29 percent. * 24 hr trend.........23 percent drier. * Wind (20 ft) * Plains...............Light winds in the morning becoming west 5 to 10 mph in the afternoon. * Chance of lightning...2 percent. * CWR...................Zero. .Forecast days 3 through 7...... .SUNDAY NIGHT...Mostly clear. Lows 55 to 60. Northwest winds 5 to 10 mph. .MONDAY...Mostly clear. Lows 55 to 60. Highs 85 to 90. Northwest winds 5 to 10 mph. .TUESDAY...Partly cloudy. Isolated showers and thunderstorms. Lows 50 to 55. Highs 82 to 87. North winds 5 to 10 mph. .WEDNESDAY...Partly cloudy. Lows 47 to 52. Highs 73 to 78. Northeast winds 5 to 10 mph. .THURSDAY...Mostly clear. Lows 49 to 54. Highs 77 to 82. .FRIDAY...Sunny. Highs 80 to 85. $$ MTZ131-301015- Northern Cheyenne Indian Reservation/Ashland Ranger District Custer Natl Forest- 233 PM MDT Fri Aug 29 2025 .Tonight... * Sky/weather...........Mostly cloudy. Scattered showers and thunderstorms in the evening, then isolated rain showers overnight. Patchy fog overnight. * Min temperature.......54-59. * 24 hr trend.........Unchanged. * Max humidity..........92-97 percent. * 24 hr trend.........2 percent drier. * Wind (20 ft) * Slope/valley.........East winds 5 to 10 mph in the evening becoming light overnight. * Ridgetop.............North 5 to 15 mph. * Chance of lightning...31 percent. * CWR...................10 percent. .SATURDAY... * Sky/weather...........Partly sunny. Patchy fog in the morning. Isolated showers and thunderstorms in the morning, then scattered showers and thunderstorms in the afternoon. * Max temperature.......74-79. * 24 hr trend.........1 degree warmer. * Min humidity..........48-53 percent. * 24 hr trend.........5 percent drier. * Wind (20 ft) * Slope/valley.........North winds 5 to 10 mph. * Ridgetop.............North 5 to 15 mph. * Chance of lightning...29 percent. * CWR...................20 percent. .SATURDAY NIGHT... * Sky/weather...........Mostly clear. Isolated showers and thunderstorms in the evening. * Min temperature.......50-55. * 24 hr trend.........4 degrees cooler. * Max humidity..........84-89 percent. * 24 hr trend.........8 percent drier. * Wind (20 ft) * Slope/valley.........Southeast winds 5 to 10 mph. * Ridgetop.............Northwest 10 to 20 mph. * Chance of lightning...15 percent. * CWR...................Zero. .SUNDAY... * Sky/weather...........Sunny. * Max temperature.......82-87. * 24 hr trend.........8 degrees warmer. * Min humidity..........24-29 percent. * 24 hr trend.........24 percent drier. * Wind (20 ft) * Slope/valley.........Southwest winds 5 to 10 mph in the morning shifting to the northwest in the afternoon. * Ridgetop.............Northwest 5 to 15 mph. * Chance of lightning...2 percent. * CWR...................Zero. .Forecast days 3 through 7...... .SUNDAY NIGHT...Mostly clear. Lows 52 to 57. West winds 5 to 10 mph. .MONDAY...Mostly clear. Lows 51 to 56. Highs 82 to 87. Northwest winds 5 to 10 mph. .TUESDAY...Partly cloudy. Scattered showers and isolated thunderstorms. Lows 48 to 53. Highs 81 to 86. North winds 5 to 15 mph. .WEDNESDAY...Not as warm. Partly cloudy. Lows 45 to 50. Highs 71 to 76. Northeast winds 5 to 10 mph. .THURSDAY...Mostly clear. Lows 46 to 51. Highs 76 to 81. .FRIDAY...Sunny. Highs 79 to 84. $$ MTZ132-301015- Custer County- 233 PM MDT Fri Aug 29 2025 .Tonight... * Sky/weather...........Mostly cloudy. Isolated showers and thunderstorms in the evening, then scattered rain showers and isolated thunderstorms overnight. * Min temperature.......56-61. * 24 hr trend.........2 degrees cooler. * Max humidity..........86-91 percent. * 24 hr trend.........1 percent wetter. * Wind (20 ft) * Plains...............Southeast winds 5 to 10 mph in the evening shifting to the north overnight. * Chance of lightning...15 percent. * CWR...................Zero. .SATURDAY... * Sky/weather...........Mostly cloudy. Scattered rain showers in the morning, then scattered showers and thunderstorms in the afternoon. * Max temperature.......72-77. * 24 hr trend.........1 degree cooler. * Min humidity..........55-60 percent. * 24 hr trend.........6 percent wetter. * Wind (20 ft) * Plains...............West winds 5 to 10 mph in the morning shifting to the north in the afternoon. * Chance of lightning...28 percent. * CWR...................10 percent. .SATURDAY NIGHT... * Sky/weather...........Mostly cloudy. Isolated showers and thunderstorms in the evening. * Min temperature.......54-59. * 24 hr trend.........2 degrees cooler. * Max humidity..........93-98 percent. * 24 hr trend.........7 percent wetter. * Wind (20 ft) * Plains...............Southeast winds 5 to 10 mph. * Chance of lightning...15 percent. * CWR...................Zero. .SUNDAY... * Sky/weather...........Sunny. * Max temperature.......79-84. * 24 hr trend.........7 degrees warmer. * Min humidity..........31-36 percent. * 24 hr trend.........24 percent drier. * Wind (20 ft) * Plains...............Southwest winds 5 to 10 mph. * Chance of lightning...6 percent. * CWR...................Zero. .Forecast days 3 through 7...... .SUNDAY NIGHT...Mostly clear. Lows 54 to 59. South winds 5 to 10 mph. .MONDAY...Mostly clear. Lows 54 to 59. Highs 81 to 86. Northwest winds 5 to 10 mph. .TUESDAY...Partly cloudy. Isolated showers and thunderstorms. Lows 47 to 52. Highs 77 to 82. North winds 5 to 15 mph. .WEDNESDAY...Cooler. Partly cloudy. Lows 44 to 49. Highs 66 to 71. Northeast winds 5 to 10 mph. .THURSDAY...Mostly clear. Lows 47 to 52. Highs 73 to 78. .FRIDAY...Sunny. Highs 75 to 80. $$ MTZ133-301015- Sioux Ranger District Custer National Forest- 233 PM MDT Fri Aug 29 2025 .Tonight... * Sky/weather...........Mostly cloudy. Scattered showers and thunderstorms in the evening, then scattered rain showers and isolated thunderstorms overnight. Patchy fog overnight. * Min temperature.......54-59. * 24 hr trend.........2 degrees cooler. * Max humidity..........100 percent. * 24 hr trend.........1 percent drier. * Wind (20 ft) * Plains...............Northeast winds 5 to 10 mph. * Chance of lightning...25 percent. * CWR...................20 percent. .SATURDAY... * Sky/weather...........Mostly cloudy. Patchy fog in the morning. Scattered rain showers in the morning, then numerous rain showers and scattered thunderstorms in the afternoon. * Max temperature.......70-75. * 24 hr trend.........1 degree cooler. * Min humidity..........66-71 percent. * 24 hr trend.........1 percent drier. * Wind (20 ft) * Plains...............Northeast winds 5 to 10 mph. * Chance of lightning...38 percent. * CWR...................30 percent. .SATURDAY NIGHT... * Sky/weather...........Mostly cloudy. Scattered rain showers and isolated thunderstorms in the evening, then scattered sprinkles overnight. * Min temperature.......51-56. * 24 hr trend.........3 degrees cooler. * Max humidity..........100 percent. * 24 hr trend.........1 percent wetter. * Wind (20 ft) * Plains...............Southeast winds 5 to 10 mph. * Chance of lightning...22 percent. * CWR...................Less than 10 percent. .SUNDAY... * Sky/weather...........Mostly sunny. * Max temperature.......76-81. * 24 hr trend.........6 degrees warmer. * Min humidity..........45-50 percent. * 24 hr trend.........21 percent drier. * Wind (20 ft) * Plains...............South winds 5 to 10 mph. * Chance of lightning...13 percent. * CWR...................Zero. .Forecast days 3 through 7...... .SUNDAY NIGHT...Mostly clear. Lows 52 to 57. South winds 5 to 10 mph. .MONDAY...Mostly clear. Lows 54 to 59. Highs 82 to 87. Northwest winds 5 to 15 mph. .TUESDAY...Partly cloudy. Scattered showers and isolated thunderstorms. Lows 48 to 53. Highs 79 to 84. North winds 5 to 15 mph. .WEDNESDAY...Not as warm. Partly cloudy. Lows 44 to 49. Highs 68 to 73. Northeast winds 5 to 15 mph. .THURSDAY...Mostly clear. Lows 46 to 51. Highs 74 to 79. .FRIDAY...Sunny. Highs 76 to 81. $$ WYZ274-301015- Sheridan County- 233 PM MDT Fri Aug 29 2025 .Tonight... * Sky/weather...........Mostly cloudy. Scattered showers and thunderstorms in the evening, then scattered sprinkles overnight. * Min temperature.......48-53. * 24 hr trend.........8 degrees cooler. * Max humidity..........100 percent. * 24 hr trend.........19 percent wetter. * 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...30 percent. * CWR...................30 percent. .SATURDAY... * Sky/weather...........Partly sunny. Scattered rain showers and isolated thunderstorms in the morning, then scattered showers and thunderstorms in the afternoon. * Max temperature.......75-80. * 24 hr trend.........1 degree warmer. * Min humidity..........43-48 percent. * 24 hr trend.........13 percent drier. * Wind (20 ft) * Slope/valley.........Northwest winds 5 to 10 mph. * Ridgetop.............Northwest 5 to 15 mph. * Chance of lightning...33 percent. * CWR...................10 percent. .SATURDAY NIGHT... * Sky/weather...........Mostly clear. * Min temperature.......47-52. * 24 hr trend.........1 degree cooler. * Max humidity..........81-86 percent. * 24 hr trend.........17 percent drier. * Wind (20 ft) * Slope/valley.........South winds 5 to 10 mph. * Ridgetop.............Northwest 10 to 20 mph. * Chance of lightning...8 percent. * CWR...................Zero. .SUNDAY... * Sky/weather...........Sunny. * Max temperature.......81-86. * 24 hr trend.........6 degrees warmer. * Min humidity..........26-31 percent. * 24 hr trend.........17 percent drier. * Wind (20 ft) * Slope/valley.........West winds 5 to 10 mph in the morning shifting to the north 5 to 15 mph in the afternoon. * Ridgetop.............Northwest 10 to 20 mph. * Chance of lightning...6 percent. * CWR...................Zero. .Forecast days 3 through 7...... .SUNDAY NIGHT...Mostly clear. Lows 49 to 54. West winds 5 to 10 mph. .MONDAY...Mostly clear. Lows 48 to 53. Highs 82 to 87. Northwest winds 5 to 15 mph. .TUESDAY...Partly cloudy. Scattered showers and isolated thunderstorms. Lows 47 to 52. Highs 81 to 86. Northwest winds 5 to 15 mph. .WEDNESDAY...Partly cloudy. Lows 44 to 49. Highs 74 to 79. Northwest winds 5 to 10 mph. .THURSDAY...Partly cloudy. Lows 45 to 50. Highs 77 to 82. .FRIDAY...Sunny. Highs 79 to 84. $$ WYZ284-301015- Bighorn National Forest- 233 PM MDT Fri Aug 29 2025 .Tonight... * Sky/weather...........Mostly cloudy. Scattered showers and thunderstorms in the evening, then isolated rain showers overnight. * Min temperature.......38-43. * 24 hr trend.........5 degrees cooler. * Max humidity..........95-100 percent. * 24 hr trend.........3 percent drier. * Wind (20 ft) * At Burgess Jct.......West winds 5 to 10 mph. * Chance of lightning...28 percent. * CWR...................30 percent. .SATURDAY... * Sky/weather...........Partly sunny. Scattered rain showers and isolated thunderstorms in the morning, then scattered showers and thunderstorms in the afternoon. * Max temperature.......59-64. * 24 hr trend.........2 degrees warmer. * Min humidity..........53-58 percent. * 24 hr trend.........13 percent drier. * Wind (20 ft) * At Burgess Jct.......Northwest winds 5 to 15 mph. * Chance of lightning...34 percent. * CWR...................30 percent. .SATURDAY NIGHT... * Sky/weather...........Mostly clear. * Min temperature.......37-42. * 24 hr trend.........1 degree cooler. * Max humidity..........79-84 percent. * 24 hr trend.........16 percent drier. * Wind (20 ft) * At Burgess Jct.......Southwest winds 5 to 15 mph. * Chance of lightning...9 percent. * CWR...................Zero. .SUNDAY... * Sky/weather...........Sunny. * Max temperature.......64-69. * 24 hr trend.........5 degrees warmer. * Min humidity..........31-36 percent. * 24 hr trend.........22 percent drier. * Wind (20 ft) * At Burgess Jct.......Northwest winds 5 to 15 mph. * Chance of lightning...8 percent. * CWR...................Zero. .Forecast days 3 through 7...... .SUNDAY NIGHT...Mostly clear. Lows 41 to 46. Southwest winds 5 to 15 mph. .MONDAY...Mostly clear. Lows 41 to 46. Highs 66 to 71. Northwest winds 5 to 15 mph. .TUESDAY...Partly cloudy. Scattered showers and isolated thunderstorms. Lows 39 to 44. Highs 64 to 69. Northwest winds 5 to 15 mph. .WEDNESDAY...Partly cloudy. Isolated showers. Lows 37 to 42. Highs 59 to 64. Northwest winds 5 to 15 mph. .THURSDAY...Partly cloudy. Lows 38 to 43. Highs 62 to 67. .FRIDAY...Mostly sunny. Highs 64 to 69. $$ weather.gov/billings