Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS Billings, MT
Issued by NWS Billings, MT
267 FNUS55 KBYZ 301943 FWFBYZ Fire Weather Planning Forecast for SCen and SErn Montana National Weather Service Billings MT 143 PM MDT Sat Aug 30 2025 .DISCUSSION... Look for isolated to scattered showers and thundershowers over the eastern districts (mainly Yellowstone County eastward) through the evening. Dry and warmer conditions are then expected over the region through Tuesday...the exception being some thunderstorm activity in the Sioux Ranger District tomorrow (Sunday). Western districts may see afternoon RHs in the teens to low 20s the next few days. A late day cold front is expected to bring a shift to breezy north winds Tuesday evening followed by cooler conditions through midweek. BT MTZ123-311015- Gallatin National Forest- 143 PM MDT Sat Aug 30 2025 .Tonight... * Sky/weather...........Mostly clear. * Min temperature.......47-57 at 5000 feet...42-52 at 7000 feet. * 24 hr trend.........6 degrees warmer. * Max humidity..........58-68 percent at 5000 feet...56-66 percent at 7000 feet. * 24 hr trend.........43 percent drier. * Wind (20 ft) * Slope/valley.........Southeast winds 5 to 10 mph. * Ridgetop.............Northwest 5 to 15 mph. * Chance of lightning...2 percent. * CWR...................Zero. .SUNDAY... * Sky/weather...........Sunny. * Max temperature.......78-86 at 5000 feet...66-76 at 7000 feet. * 24 hr trend.........5 degrees warmer. * Min humidity..........15-21 percent at 5000 feet...18-28 percent at 7000 feet. * 24 hr trend.........11 percent drier. * Wind (20 ft) * Slope/valley.........Southeast winds 5 to 10 mph in the morning shifting to the north in the afternoon. * Ridgetop.............Northwest 5 to 10 mph. * Chance of lightning...1 percent. * CWR...................Zero. .SUNDAY NIGHT... * Sky/weather...........Mostly clear. * Min temperature.......49-59 at 5000 feet...44-54 at 7000 feet. * 24 hr trend.........2 degrees warmer. * Max humidity..........46-56 percent at 5000 feet...48-58 percent at 7000 feet. * 24 hr trend.........14 percent drier. * Wind (20 ft) * Slope/valley.........Southeast winds 5 to 10 mph. * Ridgetop.............Northeast 5 to 10 mph. * Chance of lightning...0 percent. * CWR...................Zero. .MONDAY... * Sky/weather...........Sunny. * Max temperature.......79-88 at 5000 feet...67-77 at 7000 feet. * 24 hr trend.........2 degrees warmer. * Min humidity..........14-23 percent at 5000 feet...18-28 percent at 7000 feet. * 24 hr trend.........1 percent wetter. * Wind (20 ft) * Slope/valley.........South winds 5 to 10 mph in the morning shifting to the north in the afternoon. * Ridgetop.............Light winds. * Chance of lightning...1 percent. * CWR...................Zero. .Forecast days 3 through 7...... .MONDAY NIGHT...Mostly clear. Lows 48 to 58. Southeast winds 5 to 10 mph. .TUESDAY...Mostly clear. Lows 45 to 55. Highs 79 to 88. Southeast winds 5 to 10 mph. .WEDNESDAY...Mostly clear. Lows 45 to 55. Highs 74 to 84. West winds 5 to 10 mph. .THURSDAY...Partly cloudy. Lows 45 to 55. Highs 76 to 85. Southwest winds 5 to 10 mph. .FRIDAY...Partly cloudy. Lows 48 to 58. Highs 77 to 87. .SATURDAY...Mostly sunny. Scattered showers and isolated thunderstorms. Highs 77 to 87. $$ MTZ124-311015- Wheatland County/Sweet Grass County- 143 PM MDT Sat Aug 30 2025 .Tonight... * Sky/weather...........Mostly clear. Isolated rain showers in the evening. * Min temperature.......47-52. * 24 hr trend.........3 degrees cooler. * Max humidity..........74-79 percent. * 24 hr trend.........20 percent drier. * Wind (20 ft) * Plains...............East winds 5 to 10 mph in the evening shifting to the west 5 to 15 mph overnight. * Chance of lightning...6 percent. * CWR...................Zero. .SUNDAY... * Sky/weather...........Sunny. * Max temperature.......82-87. * 24 hr trend.........5 degrees warmer. * Min humidity..........18-23 percent. * 24 hr trend.........8 percent drier. * Wind (20 ft) * Plains...............Northwest winds 5 to 15 mph. * Chance of lightning...2 percent. * CWR...................Zero. .SUNDAY NIGHT... * Sky/weather...........Mostly clear. * Min temperature.......48-53. * 24 hr trend.........1 degree warmer. * Max humidity..........59-64 percent. * 24 hr trend.........15 percent drier. * Wind (20 ft) * Plains...............Northwest winds 5 to 10 mph. * Chance of lightning...0 percent. * CWR...................Zero. .MONDAY... * Sky/weather...........Sunny. * Max temperature.......82-87. * 24 hr trend.........Unchanged. * Min humidity..........18-23 percent. * 24 hr trend.........Unchanged. * Wind (20 ft) * Plains...............West winds 5 to 10 mph in the morning shifting to the northeast in the afternoon. * Chance of lightning...1 percent. * CWR...................Zero. .Forecast days 3 through 7...... .MONDAY NIGHT...Mostly clear. Lows 48 to 53. North winds 5 to 15 mph. .TUESDAY...Partly cloudy. Lows 46 to 51. Highs 83 to 88. North winds 5 to 15 mph. .WEDNESDAY...Not as warm. Partly cloudy. Lows 44 to 49. Highs 73 to 78. East winds 5 to 15 mph. .THURSDAY...Partly cloudy. Lows 44 to 49. Highs 79 to 84. Northwest winds 5 to 15 mph. .FRIDAY...Mostly clear. Lows 47 to 52. Highs 80 to 85. .SATURDAY...Mostly sunny. Isolated showers. Highs 81 to 86. $$ MTZ125-311015- Stillwater County- 143 PM MDT Sat Aug 30 2025 .Tonight... * Sky/weather...........Mostly clear. * Min temperature.......52-57. * 24 hr trend.........3 degrees warmer. * Max humidity..........56-61 percent. * 24 hr trend.........35 percent drier. * Wind (20 ft) * Plains...............West winds 5 to 10 mph. * Chance of lightning...4 percent. * CWR...................Zero. .SUNDAY... * Sky/weather...........Sunny. * Max temperature.......83-88. * 24 hr trend.........5 degrees warmer. * Min humidity..........18-23 percent. * 24 hr trend.........6 percent drier. * Wind (20 ft) * Plains...............Northwest winds 5 to 10 mph. * Chance of lightning...1 percent. * CWR...................Zero. .SUNDAY NIGHT... * Sky/weather...........Mostly clear. * Min temperature.......53-58. * 24 hr trend.........1 degree warmer. * Max humidity..........46-51 percent. * 24 hr trend.........10 percent drier. * Wind (20 ft) * Plains...............West winds 5 to 10 mph. * Chance of lightning...0 percent. * CWR...................Zero. .MONDAY... * Sky/weather...........Sunny. * Max temperature.......84-89. * 24 hr trend.........1 degree warmer. * Min humidity..........18-23 percent. * 24 hr trend.........Unchanged. * Wind (20 ft) * Plains...............West winds 5 to 10 mph in the morning shifting to the northeast in the afternoon. * Chance of lightning...3 percent. * CWR...................Zero. .Forecast days 3 through 7...... .MONDAY NIGHT...Mostly clear. Lows 53 to 58. South winds 5 to 10 mph. .TUESDAY...Partly cloudy. Lows 49 to 54. Highs 84 to 89. North winds 5 to 10 mph. .WEDNESDAY...Not as warm. Partly cloudy. Lows 49 to 54. Highs 74 to 79. Northeast winds 5 to 10 mph. .THURSDAY...Partly cloudy. Lows 49 to 54. Highs 79 to 84. Northwest winds 5 to 10 mph. .FRIDAY...Mostly clear. Lows 51 to 56. Highs 81 to 86. .SATURDAY...Mostly sunny. Scattered showers. Highs 83 to 88. $$ MTZ126-311015- Beartooth Ranger District Custer National Forest- 143 PM MDT Sat Aug 30 2025 .Tonight... * Sky/weather...........Mostly clear. Patchy smoke overnight. * Min temperature.......53-59 at 5000 feet...45-55 at 7000 feet. * 24 hr trend.........6 degrees warmer. * Max humidity..........54-59 percent. * 24 hr trend.........30 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. Patchy smoke through the day. * Max temperature.......76-84 at 5000 feet...67-77 at 7000 feet. * 24 hr trend.........6 degrees warmer. * Min humidity..........17-24 percent at 5000 feet...21-29 percent at 7000 feet. * 24 hr trend.........16 percent drier. * Wind (20 ft) * Slope/valley.........Northwest winds 5 to 10 mph. * Ridgetop.............Northwest 5 to 15 mph. * Chance of lightning...2 percent. * CWR...................Zero. .SUNDAY NIGHT... * Sky/weather...........Mostly clear. * Min temperature.......54-61 at 5000 feet...47-57 at 7000 feet. * 24 hr trend.........3 degrees warmer. * Max humidity..........37-47 percent at 5000 feet...39-49 percent at 7000 feet. * 24 hr trend.........17 percent drier. * Wind (20 ft) * Slope/valley.........Southwest winds 5 to 10 mph. * Ridgetop.............Northwest 5 to 10 mph. * Chance of lightning...0 percent. * CWR...................Zero. .MONDAY... * Sky/weather...........Sunny. * Max temperature.......77-86 at 5000 feet...68-78 at 7000 feet. * 24 hr trend.........1 degree warmer. * Min humidity..........18-24 percent at 5000 feet...23-31 percent at 7000 feet. * 24 hr trend.........3 percent wetter. * Wind (20 ft) * Slope/valley.........Southwest winds 5 to 10 mph in the morning shifting to the northeast in the afternoon. * Ridgetop.............Light winds. * Chance of lightning...6 percent. * CWR...................Zero. .Forecast days 3 through 7...... .MONDAY NIGHT...Mostly clear. Lows 53 to 62. Southwest winds 5 to 10 mph. .TUESDAY...Partly cloudy. Lows 50 to 57. Highs 78 to 86. Northwest winds 5 to 15 mph. .WEDNESDAY...Partly cloudy. Isolated showers and thunderstorms. Lows 48 to 56. Highs 68 to 77. Northwest winds 5 to 15 mph. .THURSDAY...Partly cloudy. Lows 49 to 56. Highs 71 to 81. Northwest winds 5 to 15 mph. .FRIDAY...Partly cloudy. Lows 51 to 59. Highs 74 to 82. .SATURDAY...Mostly sunny. Scattered showers and isolated thunderstorms. Highs 77 to 85. $$ MTZ127-311015- Golden Valley County/Musselshell county- 143 PM MDT Sat Aug 30 2025 .Tonight... * Sky/weather...........Mostly clear. Isolated rain showers in the evening. * Min temperature.......56-61. * 24 hr trend.........2 degrees warmer. * Max humidity..........66-71 percent. * 24 hr trend.........22 percent drier. * Wind (20 ft) * Plains...............East winds 5 to 10 mph in the evening shifting to the southwest overnight. * Chance of lightning...5 percent. * CWR...................Zero. .SUNDAY... * Sky/weather...........Sunny. * Max temperature.......82-87. * 24 hr trend.........9 degrees warmer. * Min humidity..........20-25 percent. * 24 hr trend.........18 percent drier. * Wind (20 ft) * Plains...............Northwest winds 5 to 10 mph. * Chance of lightning...1 percent. * CWR...................Zero. .SUNDAY NIGHT... * Sky/weather...........Mostly clear. * Min temperature.......58-63. * 24 hr trend.........2 degrees warmer. * Max humidity..........49-54 percent. * 24 hr trend.........17 percent drier. * Wind (20 ft) * Plains...............North winds 5 to 10 mph. * Chance of lightning...0 percent. * CWR...................Zero. .MONDAY... * Sky/weather...........Sunny. * Max temperature.......82-87. * 24 hr trend.........Unchanged. * Min humidity..........20-25 percent. * 24 hr trend.........Unchanged. * Wind (20 ft) * Plains...............Northwest winds 5 to 10 mph. * Chance of lightning...0 percent. * CWR...................Zero. .Forecast days 3 through 7...... .MONDAY NIGHT...Mostly clear. Lows 57 to 62. Northeast winds 5 to 10 mph. .TUESDAY...Partly cloudy. Lows 51 to 56. Highs 82 to 87. North winds 5 to 10 mph. .WEDNESDAY...Not as warm. Partly cloudy. Lows 49 to 54. Highs 68 to 73. East winds 5 to 10 mph. .THURSDAY...Partly cloudy. Lows 50 to 55. Highs 75 to 80. Northwest winds 5 to 10 mph. .FRIDAY...Mostly clear. Lows 53 to 58. Highs 78 to 83. .SATURDAY...Mostly sunny. Highs 81 to 86. $$ MTZ128-311015- Yellowstone County- 143 PM MDT Sat Aug 30 2025 .Tonight... * Sky/weather...........Partly cloudy. Isolated rain showers in the evening. * Min temperature.......54-59. * 24 hr trend.........1 degree cooler. * Max humidity..........70-75 percent. * 24 hr trend.........21 percent drier. * Wind (20 ft) * Plains...............Northeast winds 5 to 10 mph in the evening shifting to the southwest overnight. * Chance of lightning...6 percent. * CWR...................Zero. .SUNDAY... * Sky/weather...........Sunny. * Max temperature.......86-91. * 24 hr trend.........8 degrees warmer. * Min humidity..........15-20 percent. * 24 hr trend.........16 percent drier. * Wind (20 ft) * Plains...............Northwest winds 5 to 10 mph. * Chance of lightning...0 percent. * CWR...................Zero. .SUNDAY NIGHT... * Sky/weather...........Mostly clear. * Min temperature.......56-61. * 24 hr trend.........2 degrees warmer. * Max humidity..........53-58 percent. * 24 hr trend.........17 percent drier. * Wind (20 ft) * Plains...............Northeast winds 5 to 10 mph in the evening shifting to the west overnight. * Chance of lightning...0 percent. * CWR...................Zero. .MONDAY... * Sky/weather...........Sunny. * Max temperature.......86-91. * 24 hr trend.........Unchanged. * Min humidity..........16-21 percent. * 24 hr trend.........1 percent wetter. * Wind (20 ft) * Plains...............Northwest winds 5 to 10 mph. * Chance of lightning...0 percent. * CWR...................Zero. .Forecast days 3 through 7...... .MONDAY NIGHT...Mostly clear. Lows 55 to 60. Northeast winds 5 to 10 mph. .TUESDAY...Partly cloudy. Lows 53 to 58. Highs 86 to 91. North winds 5 to 15 mph. .WEDNESDAY...Not as warm. Partly cloudy. Lows 49 to 54. Highs 73 to 78. Northeast winds 5 to 15 mph. .THURSDAY...Partly cloudy. Lows 50 to 55. Highs 80 to 85. Northwest winds 5 to 15 mph. .FRIDAY...Mostly clear. Lows 53 to 58. Highs 82 to 87. .SATURDAY...Mostly sunny. Highs 86 to 91. $$ MTZ129-311015- Crow Indian Reservation/Bighorn Canyon Rec Area- 143 PM MDT Sat Aug 30 2025 .Tonight... * Sky/weather...........Mostly clear. Isolated rain showers in the evening. * Min temperature.......53-58 at 5000 feet...50-55 at 7000 feet. * 24 hr trend.........2 degrees warmer. * Max humidity..........59-69 percent at 5000 feet...53-61 percent at 7000 feet. * 24 hr trend.........26 percent drier. * Wind (20 ft) * Slope/valley.........Northeast winds 5 to 10 mph in the evening shifting to the southwest overnight. * Ridgetop.............Northwest 15 to 25 mph. * Chance of lightning...6 percent. * CWR...................Zero. .SUNDAY... * Sky/weather...........Sunny. * Max temperature.......75-85 at 5000 feet...66-74 at 7000 feet. * 24 hr trend.........7 degrees warmer. * Min humidity..........17-27 percent at 5000 feet...23-28 percent at 7000 feet. * 24 hr trend.........14 percent drier. * Wind (20 ft) * Slope/valley.........Northwest winds 5 to 10 mph. * Ridgetop.............Northwest 10 to 20 mph. * Chance of lightning...1 percent. * CWR...................Zero. .SUNDAY NIGHT... * Sky/weather...........Mostly clear. * Min temperature.......56-62 at 5000 feet...53-58 at 7000 feet. * 24 hr trend.........4 degrees warmer. * Max humidity..........37-47 percent at 5000 feet...35-41 percent at 7000 feet. * 24 hr trend.........24 percent drier. * Wind (20 ft) * Slope/valley.........East winds 5 to 10 mph in the evening shifting to the south overnight. * Ridgetop.............Northwest 5 to 15 mph. * Chance of lightning...0 percent. * CWR...................Zero. .MONDAY... * Sky/weather...........Sunny. * Max temperature.......76-86 at 5000 feet...67-75 at 7000 feet. * 24 hr trend.........2 degrees warmer. * Min humidity..........18-25 percent at 5000 feet...21-27 percent at 7000 feet. * 24 hr trend.........4 percent drier. * Wind (20 ft) * Slope/valley.........Northwest winds 5 to 10 mph. * Ridgetop.............Northwest 10 to 20 mph. * Chance of lightning...0 percent. * CWR...................Zero. .Forecast days 3 through 7...... .MONDAY NIGHT...Mostly clear. Lows 55 to 61. East winds 5 to 10 mph. .TUESDAY...Partly cloudy. Lows 50 to 56. Highs 76 to 86. North winds 5 to 15 mph. .WEDNESDAY...Cooler. Partly cloudy. Lows 46 to 54. Highs 65 to 75. Northeast winds 5 to 15 mph. .THURSDAY...Partly cloudy. Lows 49 to 56. Highs 70 to 80. West winds 5 to 15 mph. .FRIDAY...Mostly clear. Lows 52 to 59. Highs 73 to 83. .SATURDAY...Mostly sunny. Highs 76 to 86. $$ MTZ130-311015- Northern Rosebud/Northern Treasure Counties- 143 PM MDT Sat Aug 30 2025 .Tonight... * Sky/weather...........Mostly clear. Isolated rain showers in the evening. * Min temperature.......53-58. * 24 hr trend.........6 degrees cooler. * Max humidity..........88-93 percent. * 24 hr trend.........3 percent drier. * Wind (20 ft) * Plains...............East winds 5 to 10 mph in the evening becoming light overnight. * Chance of lightning...7 percent. * CWR...................Zero. .SUNDAY... * Sky/weather...........Sunny. * Max temperature.......83-88. * 24 hr trend.........6 degrees warmer. * Min humidity..........23-28 percent. * 24 hr trend.........7 percent drier. * Wind (20 ft) * Plains...............West winds 5 to 10 mph. * Chance of lightning...1 percent. * CWR...................Zero. .SUNDAY NIGHT... * Sky/weather...........Mostly clear. * Min temperature.......56-61. * 24 hr trend.........3 degrees warmer. * Max humidity..........64-69 percent. * 24 hr trend.........24 percent drier. * Wind (20 ft) * Plains...............East winds 5 to 10 mph in the evening becoming light overnight. * Chance of lightning...1 percent. * CWR...................Zero. .MONDAY... * Sky/weather...........Sunny. * Max temperature.......85-90. * 24 hr trend.........2 degrees warmer. * Min humidity..........18-23 percent. * 24 hr trend.........5 percent drier. * Wind (20 ft) * Plains...............Northwest winds 5 to 10 mph. * Chance of lightning...0 percent. * CWR...................Zero. .Forecast days 3 through 7...... .MONDAY NIGHT...Mostly clear. Lows 55 to 60. Northwest winds 5 to 10 mph. .TUESDAY...Partly cloudy. Lows 49 to 54. Highs 84 to 89. North winds 5 to 10 mph. .WEDNESDAY...Not as warm. Partly cloudy. Lows 44 to 49. Highs 70 to 75. East winds 5 to 10 mph. .THURSDAY...Mostly clear. Lows 48 to 53. Highs 76 to 81. Northwest winds 5 to 10 mph. .FRIDAY...Mostly clear. Lows 51 to 56. Highs 79 to 84. .SATURDAY...Mostly sunny. Highs 83 to 88. $$ MTZ131-311015- Northern Cheyenne Indian Reservation/Ashland Ranger District Custer Natl Forest- 143 PM MDT Sat Aug 30 2025 .Tonight... * Sky/weather...........Mostly clear. Isolated rain showers in the evening. * Min temperature.......49-54. * 24 hr trend.........3 degrees cooler. * Max humidity..........87-92 percent. * 24 hr trend.........7 percent drier. * Wind (20 ft) * Slope/valley.........East winds 5 to 10 mph in the evening shifting to the southwest overnight. * Ridgetop.............Northwest 10 to 20 mph. * Chance of lightning...6 percent. * CWR...................Zero. .SUNDAY... * Sky/weather...........Sunny. * Max temperature.......80-85. * 24 hr trend.........6 degrees warmer. * Min humidity..........25-30 percent. * 24 hr trend.........14 percent drier. * Wind (20 ft) * Slope/valley.........Northwest winds 5 to 10 mph. * Ridgetop.............Northwest 15 to 25 mph. * Chance of lightning...1 percent. * CWR...................Zero. .SUNDAY NIGHT... * Sky/weather...........Mostly clear. * Min temperature.......52-57. * 24 hr trend.........3 degrees warmer. * Max humidity..........63-68 percent. * 24 hr trend.........24 percent drier. * Wind (20 ft) * Slope/valley.........East winds 5 to 10 mph in the evening shifting to the south overnight. * Ridgetop.............Northwest 10 to 20 mph. * Chance of lightning...0 percent. * CWR...................Zero. .MONDAY... * Sky/weather...........Sunny. * Max temperature.......83-88. * 24 hr trend.........3 degrees warmer. * Min humidity..........19-24 percent. * 24 hr trend.........6 percent drier. * Wind (20 ft) * Slope/valley.........Northwest winds 5 to 10 mph. * Ridgetop.............Northwest 10 to 20 mph. * Chance of lightning...0 percent. * CWR...................Zero. .Forecast days 3 through 7...... .MONDAY NIGHT...Mostly clear. Lows 52 to 57. Northwest winds 5 to 10 mph. .TUESDAY...Partly cloudy. Lows 48 to 53. Highs 83 to 88. North winds 5 to 10 mph. .WEDNESDAY...Not as warm. Partly cloudy. Lows 41 to 46. Highs 68 to 73. Northeast winds 5 to 10 mph. .THURSDAY...Mostly clear. Lows 46 to 51. Highs 74 to 79. Northwest winds 5 to 10 mph. .FRIDAY...Mostly clear. Lows 49 to 54. Highs 78 to 83. .SATURDAY...Mostly sunny. Highs 83 to 88. $$ MTZ132-311015- Custer County- 143 PM MDT Sat Aug 30 2025 .Tonight... * Sky/weather...........Mostly cloudy. Scattered rain showers in the evening. * Min temperature.......53-58. * 24 hr trend.........4 degrees cooler. * Max humidity..........95-100 percent. * 24 hr trend.........10 percent wetter. * Wind (20 ft) * Plains...............Southeast winds 5 to 10 mph. * Chance of lightning...12 percent. * CWR...................Zero. .SUNDAY... * Sky/weather...........Mostly sunny. Isolated rain showers in the afternoon. * Max temperature.......77-82. * 24 hr trend.........4 degrees warmer. * Min humidity..........31-36 percent. * 24 hr trend.........16 percent drier. * Wind (20 ft) * Plains...............South winds 5 to 10 mph in the morning shifting to the west in the afternoon. * Chance of lightning...3 percent. * CWR...................Zero. .SUNDAY NIGHT... * Sky/weather...........Mostly clear. * Min temperature.......55-60. * 24 hr trend.........2 degrees warmer. * Max humidity..........78-83 percent. * 24 hr trend.........17 percent drier. * Wind (20 ft) * Plains...............Southeast winds 5 to 10 mph. * Chance of lightning...1 percent. * CWR...................Zero. .MONDAY... * Sky/weather...........Sunny. * Max temperature.......82-87. * 24 hr trend.........5 degrees warmer. * Min humidity..........24-29 percent. * 24 hr trend.........7 percent drier. * Wind (20 ft) * Plains...............Southwest winds 5 to 10 mph in the morning shifting to the northwest 5 to 15 mph in the afternoon. * Chance of lightning...1 percent. * CWR...................Zero. .Forecast days 3 through 7...... .MONDAY NIGHT...Partly cloudy. Lows 54 to 59. Northwest winds 5 to 10 mph. .TUESDAY...Mostly cloudy. Isolated showers and thunderstorms. Lows 46 to 51. Highs 80 to 85. North winds 5 to 15 mph. .WEDNESDAY...Cooler. Partly cloudy. Lows 41 to 46. Highs 64 to 69. Northeast winds 5 to 10 mph. .THURSDAY...Mostly clear. Lows 45 to 50. Highs 71 to 76. Northwest winds 5 to 15 mph. .FRIDAY...Mostly clear. Lows 49 to 54. Highs 74 to 79. .SATURDAY...Sunny. Highs 79 to 84. $$ MTZ133-311015- Sioux Ranger District Custer National Forest- 143 PM MDT Sat Aug 30 2025 .Tonight... * Sky/weather...........Mostly cloudy. Scattered showers and thunderstorms in the evening, then isolated rain showers overnight. Patchy fog overnight. * Min temperature.......53-58. * 24 hr trend.........2 degrees cooler. * Max humidity..........100 percent. * 24 hr trend.........Unchanged. * Wind (20 ft) * Plains...............Southeast winds 5 to 10 mph. * Chance of lightning...26 percent. * CWR...................Less than 10 percent. .SUNDAY... * Sky/weather...........Mostly sunny. Patchy fog in the morning. Isolated rain showers in the afternoon. * Max temperature.......73-78. * 24 hr trend.........5 degrees warmer. * Min humidity..........48-53 percent. * 24 hr trend.........20 percent drier. * Wind (20 ft) * Plains...............Southeast winds 5 to 10 mph. * Chance of lightning...12 percent. * CWR...................Zero. .SUNDAY NIGHT... * Sky/weather...........Mostly clear. * Min temperature.......50-55. * 24 hr trend.........3 degrees cooler. * Max humidity..........92-97 percent. * 24 hr trend.........6 percent drier. * Wind (20 ft) * Plains...............South winds 5 to 10 mph. * Chance of lightning...4 percent. * CWR...................Zero. .MONDAY... * Sky/weather...........Sunny. * Max temperature.......82-87. * 24 hr trend.........9 degrees warmer. * Min humidity..........27-32 percent. * 24 hr trend.........21 percent drier. * Wind (20 ft) * Plains...............West winds 5 to 15 mph. * Chance of lightning...2 percent. * CWR...................Zero. .Forecast days 3 through 7...... .MONDAY NIGHT...Partly cloudy. Lows 54 to 59. Northwest winds 5 to 15 mph. .TUESDAY...Partly cloudy. Scattered showers and isolated thunderstorms. Lows 46 to 51. Highs 81 to 86. North winds 5 to 15 mph. .WEDNESDAY...Cooler. Partly cloudy. Lows 38 to 43. Highs 64 to 69. Northeast winds 5 to 15 mph. .THURSDAY...Mostly clear. Lows 45 to 50. Highs 72 to 77. Northwest winds 5 to 15 mph. .FRIDAY...Mostly clear. Lows 46 to 51. Highs 75 to 80. .SATURDAY...Sunny. Highs 79 to 84. $$ WYZ274-311015- Sheridan County- 143 PM MDT Sat Aug 30 2025 .Tonight... * Sky/weather...........Mostly clear. Isolated rain showers in the evening. * Min temperature.......47-52. * 24 hr trend.........1 degree cooler. * Max humidity..........83-88 percent. * 24 hr trend.........2 percent wetter. * Wind (20 ft) * Slope/valley.........West winds 5 to 10 mph. * Ridgetop.............Northwest 15 to 25 mph. * Chance of lightning...5 percent. * CWR...................Zero. .SUNDAY... * Sky/weather...........Sunny. * Max temperature.......81-86. * 24 hr trend.........8 degrees warmer. * Min humidity..........23-28 percent. * 24 hr trend.........12 percent drier. * Wind (20 ft) * Slope/valley.........Northwest winds 5 to 10 mph. * Ridgetop.............Northwest 15 to 25 mph. * Chance of lightning...2 percent. * CWR...................Zero. .SUNDAY NIGHT... * Sky/weather...........Mostly clear. * Min temperature.......49-54. * 24 hr trend.........2 degrees warmer. * Max humidity..........62-67 percent. * 24 hr trend.........21 percent drier. * Wind (20 ft) * Slope/valley.........Southwest winds 5 to 10 mph. * Ridgetop.............Northwest 5 to 15 mph. * Chance of lightning...0 percent. * CWR...................Zero. .MONDAY... * Sky/weather...........Sunny. * Max temperature.......83-88. * 24 hr trend.........2 degrees warmer. * Min humidity..........18-23 percent. * 24 hr trend.........5 percent drier. * Wind (20 ft) * Slope/valley.........Northwest winds 5 to 10 mph. * Ridgetop.............Northwest 10 to 20 mph. * Chance of lightning...0 percent. * CWR...................Zero. .Forecast days 3 through 7...... .MONDAY NIGHT...Mostly clear. Lows 48 to 53. West winds 5 to 10 mph. .TUESDAY...Mostly clear. Lows 47 to 52. Highs 83 to 88. Northwest winds 5 to 10 mph. .WEDNESDAY...Not as warm. Partly cloudy. Lows 41 to 46. Highs 70 to 75. North winds 5 to 10 mph. .THURSDAY...Partly cloudy. Lows 44 to 49. Highs 76 to 81. Northwest winds 5 to 15 mph. .FRIDAY...Mostly clear. Lows 47 to 52. Highs 78 to 83. .SATURDAY...Mostly sunny. Highs 83 to 88. $$ WYZ284-311015- Bighorn National Forest- 143 PM MDT Sat Aug 30 2025 .Tonight... * Sky/weather...........Mostly clear. Isolated rain showers in the evening. * Min temperature.......38-43. * 24 hr trend.........1 degree cooler. * Max humidity..........79-84 percent. * 24 hr trend.........12 percent drier. * Wind (20 ft) * At Burgess Jct.......West winds 5 to 10 mph. * Chance of lightning...7 percent. * CWR...................Zero. .SUNDAY... * Sky/weather...........Sunny. * Max temperature.......64-69. * 24 hr trend.........7 degrees warmer. * Min humidity..........27-32 percent. * 24 hr trend.........17 percent drier. * Wind (20 ft) * At Burgess Jct.......Northwest winds 5 to 15 mph. * Chance of lightning...3 percent. * CWR...................Zero. .SUNDAY NIGHT... * Sky/weather...........Mostly clear. * Min temperature.......41-46. * 24 hr trend.........3 degrees warmer. * Max humidity..........58-63 percent. * 24 hr trend.........21 percent drier. * Wind (20 ft) * At Burgess Jct.......Southwest winds 5 to 15 mph. * Chance of lightning...0 percent. * CWR...................Zero. .MONDAY... * Sky/weather...........Sunny. * Max temperature.......66-71. * 24 hr trend.........2 degrees warmer. * Min humidity..........20-25 percent. * 24 hr trend.........7 percent drier. * 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...... .MONDAY NIGHT...Mostly clear. Lows 39 to 44. Southwest winds 5 to 15 mph. .TUESDAY...Partly cloudy. Lows 38 to 43. Highs 66 to 71. Northwest winds 5 to 15 mph. .WEDNESDAY...Partly cloudy. Isolated showers and thunderstorms. Lows 36 to 41. Highs 58 to 63. Northwest winds 5 to 15 mph. .THURSDAY...Partly cloudy. Lows 38 to 43. Highs 61 to 66. Northwest winds 5 to 15 mph. .FRIDAY...Mostly clear. Lows 42 to 47. Highs 64 to 69. .SATURDAY...Mostly sunny. Isolated showers. Highs 68 to 73. $$ weather.gov/billings