FNUS55 KBYZ 091915 FWFBYZ Fire Weather Planning Forecast for SCen and SErn Montana National Weather Service Billings MT 115 PM MDT Thu Jul 9 2026 .EXTREME HEAT FORECAST THIS WEEKEND INTO MONDAY... .CRITICAL FIRE WEATHER CONDITIONS POSSIBLE SUNDAY... .DISCUSSION... Very hot and dry conditions are forecast into next week. Record temperatures are possible with highs in the 100s to 110F, beginning Saturday, with the hottest day being Sunday. Expect conditions to become drier through the weekend, with minimum RH values in the single digits percent by Sunday. Winds look to increase across the region on Sunday with peak wind gusts in the 20s and 30s mph. This may result in Critical Fire Weather Conditions. A few isolated showers and a weak thunderstorm or two are possible on Friday, though the chance for a wetting rain is very low (less than 10%). Expect moderate to strong mixing through the period, with very strong mixing forecast on Sunday. MTZ123-101015- Gallatin National Forest- 115 PM MDT Thu Jul 9 2026 .Tonight... * Sky/weather...........Mostly clear. * Min temperature.......51-61 at 5000 feet...47-57 at 7000 feet. * 24 hr trend.........2 degrees warmer. * Max humidity..........38-43 percent. * 24 hr trend.........27 percent drier. * Wind (20 ft) * Slope/valley.........Northwest winds 5 to 10 mph in the evening becoming light overnight. * Ridgetop.............West 5 to 10 mph. * Chance of lightning...1 percent. * CWR...................Zero. .FRIDAY... * Sky/weather...........Sunny. Isolated showers and thunderstorms in the afternoon. * Max temperature.......85-94 at 5000 feet...73-83 at 7000 feet. * 24 hr trend.........4 degrees warmer. * Min humidity..........13-22 percent at 5000 feet...14-24 percent at 7000 feet. * 24 hr trend.........1 percent drier. * Wind (20 ft) * Slope/valley.........Light winds in the morning becoming west 5 to 10 mph in the afternoon. * Ridgetop.............Southwest 5 to 15 mph. * Chance of lightning...15 percent. * CWR...................Less than 10 percent. .FRIDAY NIGHT... * Sky/weather...........Partly cloudy. Isolated rain showers in the evening. * Min temperature.......54-64 at 5000 feet...49-59 at 7000 feet. * 24 hr trend.........4 degrees warmer. * Max humidity..........39-49 percent at 5000 feet...35-45 percent at 7000 feet. * 24 hr trend.........14 percent drier. * Wind (20 ft) * Slope/valley.........South winds 5 to 10 mph. * Ridgetop.............Southwest 5 to 15 mph. * Chance of lightning...12 percent. * CWR...................Less than 10 percent. .SATURDAY... * Sky/weather...........Sunny. * Max temperature.......92-100 at 5000 feet...79-89 at 7000 feet. * 24 hr trend.........6 degrees warmer. * Min humidity..........10-15 percent. * 24 hr trend.........7 percent drier. * Wind (20 ft) * Slope/valley.........Southwest winds 5 to 15 mph. * Ridgetop.............Southwest 15 to 25 mph. * Chance of lightning...2 percent. * CWR...................Zero. .Forecast days 3 through 7...... .SATURDAY NIGHT...Mostly clear. Lows 58 to 68. South winds 5 to 15 mph. .SUNDAY...Partly cloudy. Lows 58 to 68. Highs 96 to 104. Southwest winds 5 to 10 mph with gusts to around 30 mph. .MONDAY...Partly cloudy. Lows 57 to 67. Highs 89 to 99. East winds 5 to 10 mph. .TUESDAY...Mostly cloudy. Scattered showers and thunderstorms. Lows 56 to 66. Highs 86 to 96. Northeast winds 5 to 10 mph. .WEDNESDAY...Partly cloudy. Scattered showers and thunderstorms. Lows 53 to 63. Highs 84 to 92. .THURSDAY...Mostly sunny. Isolated showers and thunderstorms. Highs 81 to 91. $$ MTZ124-101015- Wheatland County/Sweet Grass County- 115 PM MDT Thu Jul 9 2026 .Tonight... * Sky/weather...........Mostly clear. * Min temperature.......52-57. * 24 hr trend.........1 degree cooler. * Max humidity..........49-54 percent. * 24 hr trend.........7 percent drier. * Wind (20 ft) * Plains...............Northwest winds 5 to 15 mph. * Chance of lightning...2 percent. * CWR...................Zero. .FRIDAY... * Sky/weather...........Sunny. Isolated showers and thunderstorms in the afternoon. * Max temperature.......89-94. * 24 hr trend.........4 degrees warmer. * Min humidity..........17-22 percent. * 24 hr trend.........1 percent wetter. * Wind (20 ft) * Plains...............West winds 5 to 10 mph in the morning shifting to the northeast in the afternoon. * Chance of lightning...15 percent. * CWR...................10 percent. .FRIDAY NIGHT... * Sky/weather...........Partly cloudy. Isolated showers and thunderstorms in the evening. * Min temperature.......55-60. * 24 hr trend.........3 degrees warmer. * Max humidity..........53-58 percent. * 24 hr trend.........4 percent wetter. * Wind (20 ft) * Plains...............West winds 5 to 10 mph. * Chance of lightning...15 percent. * CWR...................10 percent. .SATURDAY... * Sky/weather...........Sunny. * Max temperature.......98-103. * 24 hr trend.........9 degrees warmer. * Min humidity..........9-14 percent. * 24 hr trend.........8 percent drier. * Wind (20 ft) * Plains...............Southwest winds 5 to 15 mph. * Chance of lightning...3 percent. * CWR...................Zero. .Forecast days 3 through 7...... .SATURDAY NIGHT...Mostly clear. Lows 58 to 63. West winds 5 to 15 mph. .SUNDAY...Partly cloudy. Lows 61 to 66. Highs 100 to 105. West winds 5 to 15 mph with gusts to around 30 mph. .MONDAY...Partly cloudy. Isolated showers and thunderstorms. Lows 60 to 65. Highs 92 to 97. Southeast winds 10 to 20 mph with gusts to around 30 mph. .TUESDAY...Partly cloudy. Scattered showers and thunderstorms. Lows 58 to 63. Highs 90 to 95. Northeast winds 5 to 15 mph. .WEDNESDAY...Mostly cloudy. Scattered showers and thunderstorms. Lows 56 to 61. Highs 88 to 93. .THURSDAY...Mostly sunny. Isolated showers and thunderstorms. Highs 84 to 89. $$ MTZ125-101015- Stillwater County- 115 PM MDT Thu Jul 9 2026 .Tonight... * Sky/weather...........Mostly clear. * Min temperature.......55-60. * 24 hr trend.........Unchanged. * Max humidity..........45-50 percent. * 24 hr trend.........9 percent drier. * Wind (20 ft) * Plains...............West winds 5 to 10 mph. * Chance of lightning...6 percent. * CWR...................Zero. .FRIDAY... * Sky/weather...........Sunny. Isolated showers and thunderstorms in the afternoon. * Max temperature.......91-96. * 24 hr trend.........4 degrees warmer. * Min humidity..........15-20 percent. * 24 hr trend.........3 percent drier. * Wind (20 ft) * Plains...............North winds 5 to 10 mph. * Chance of lightning...15 percent. * CWR...................Less than 10 percent. .FRIDAY NIGHT... * Sky/weather...........Mostly clear. Isolated rain showers in the evening. * Min temperature.......57-62. * 24 hr trend.........2 degrees warmer. * Max humidity..........41-46 percent. * 24 hr trend.........4 percent drier. * Wind (20 ft) * Plains...............Southwest winds 5 to 10 mph. * Chance of lightning...14 percent. * CWR...................Less than 10 percent. .SATURDAY... * Sky/weather...........Sunny. * Max temperature.......99-104. * 24 hr trend.........8 degrees warmer. * Min humidity..........8-13 percent. * 24 hr trend.........7 percent drier. * Wind (20 ft) * Plains...............Southwest winds 5 to 10 mph. * Chance of lightning...2 percent. * CWR...................Zero. .Forecast days 3 through 7...... .SATURDAY NIGHT...Mostly clear. Lows 61 to 66. Southwest winds 5 to 15 mph. .SUNDAY...Partly cloudy. Lows 65 to 70. Highs 103 to 108. Southwest winds 5 to 15 mph. .MONDAY...Not as warm. Partly cloudy. Lows 62 to 67. Highs 93 to 98. East winds 5 to 10 mph. .TUESDAY...Partly cloudy. Scattered showers and thunderstorms. Lows 61 to 66. Highs 91 to 96. West winds 5 to 10 mph. .WEDNESDAY...Mostly cloudy. Numerous showers and scattered thunderstorms. Lows 60 to 65. Highs 89 to 94. .THURSDAY...Mostly sunny. Scattered showers and thunderstorms. Highs 87 to 92. $$ MTZ126-101015- Beartooth Ranger District Custer National Forest- 115 PM MDT Thu Jul 9 2026 .Tonight... * Sky/weather...........Mostly clear. Isolated rain showers in the evening. * Min temperature.......56-66 at 5000 feet...50-60 at 7000 feet. * 24 hr trend.........Unchanged. * Max humidity..........38-48 percent at 5000 feet...44-54 percent at 7000 feet. * 24 hr trend.........9 percent drier. * Wind (20 ft) * Slope/valley.........West winds 5 to 10 mph. * Ridgetop.............Southwest 5 to 10 mph. * Chance of lightning...13 percent. * CWR...................Less than 10 percent. .FRIDAY... * Sky/weather...........Sunny. Isolated showers and thunderstorms in the afternoon. * Max temperature.......87-95 at 5000 feet...77-87 at 7000 feet. * 24 hr trend.........5 degrees warmer. * Min humidity..........13-18 percent at 5000 feet...17-24 percent at 7000 feet. * 24 hr trend.........10 percent drier. * Wind (20 ft) * Slope/valley.........West winds 5 to 10 mph. * Ridgetop.............Southwest 5 to 15 mph. * Chance of lightning...15 percent. * CWR...................Less than 10 percent. .FRIDAY NIGHT... * Sky/weather...........Mostly clear. * Min temperature.......59-69 at 5000 feet...54-64 at 7000 feet. * 24 hr trend.........4 degrees warmer. * Max humidity..........31-41 percent at 5000 feet...28-38 percent at 7000 feet. * 24 hr trend.........13 percent drier. * Wind (20 ft) * Slope/valley.........Southwest winds 5 to 15 mph. * Ridgetop.............Southwest 5 to 15 mph. * Chance of lightning...12 percent. * CWR...................Less than 10 percent. .SATURDAY... * Sky/weather...........Sunny. * Max temperature.......93-100 at 5000 feet...83-93 at 7000 feet. * 24 hr trend.........7 degrees warmer. * Min humidity..........7-12 percent at 5000 feet...10-15 percent at 7000 feet. * 24 hr trend.........8 percent drier. * Wind (20 ft) * Slope/valley.........Southwest winds 10 to 20 mph. Gusts up to 30 mph in the afternoon. * Ridgetop.............Southwest 10 to 20 mph. * Chance of lightning...1 percent. * CWR...................Zero. .Forecast days 3 through 7...... .SATURDAY NIGHT...Mostly clear. Lows 63 to 73. Southwest winds 10 to 20 mph with gusts to around 30 mph. .SUNDAY...Partly cloudy. Lows 66 to 72. Highs 98 to 106. Southwest winds 10 to 20 mph with gusts to around 40 mph. .MONDAY...Partly cloudy. Lows 64 to 71. Highs 90 to 98. Northwest winds 5 to 15 mph. .TUESDAY...Mostly cloudy. Scattered showers and thunderstorms. Lows 62 to 71. Highs 87 to 94. North winds 5 to 15 mph. .WEDNESDAY...Mostly cloudy. Numerous showers and scattered thunderstorms. Lows 61 to 67. Highs 85 to 92. .THURSDAY...Mostly sunny. Scattered showers and thunderstorms. Highs 83 to 90. $$ MTZ127-101015- Golden Valley County/Musselshell county- 115 PM MDT Thu Jul 9 2026 .Tonight... * Sky/weather...........Mostly clear. * Min temperature.......61-66. * 24 hr trend.........Unchanged. * Max humidity..........39-44 percent. * 24 hr trend.........12 percent drier. * Wind (20 ft) * Plains...............Northeast winds 5 to 15 mph. * Chance of lightning...2 percent. * CWR...................Zero. .FRIDAY... * Sky/weather...........Sunny. * Max temperature.......89-94. * 24 hr trend.........5 degrees warmer. * Min humidity..........16-21 percent. * 24 hr trend.........Unchanged. * Wind (20 ft) * Plains...............Southeast winds 5 to 10 mph in the morning shifting to the southwest in the afternoon. * Chance of lightning...12 percent. * CWR...................Less than 10 percent. .FRIDAY NIGHT... * Sky/weather...........Partly cloudy. Isolated rain showers in the evening. * Min temperature.......64-69. * 24 hr trend.........3 degrees warmer. * Max humidity..........44-49 percent. * 24 hr trend.........5 percent wetter. * Wind (20 ft) * Plains...............Northwest winds 5 to 10 mph. * Chance of lightning...13 percent. * CWR...................Less than 10 percent. .SATURDAY... * Sky/weather...........Sunny. * Max temperature.......97-102. * 24 hr trend.........8 degrees warmer. * Min humidity..........8-13 percent. * 24 hr trend.........8 percent drier. * Wind (20 ft) * Plains...............Southwest winds 5 to 15 mph. * Chance of lightning...1 percent. * CWR...................Zero. .Forecast days 3 through 7...... .SATURDAY NIGHT...Mostly clear. Lows 68 to 73. Northwest winds 5 to 15 mph. .SUNDAY...Partly cloudy. Lows 69 to 74. Highs 101 to 106. Southwest winds 10 to 20 mph with gusts to around 30 mph. .MONDAY...Not as warm. Partly cloudy. Lows 67 to 72. Highs 89 to 94. Northeast winds 10 to 20 mph with gusts to around 30 mph. .TUESDAY...Partly cloudy. Scattered showers and thunderstorms. Lows 66 to 71. Highs 87 to 92. Northeast winds 5 to 15 mph. .WEDNESDAY...Mostly cloudy. Scattered showers and thunderstorms. Lows 62 to 67. Highs 86 to 91. .THURSDAY...Mostly sunny. Highs 82 to 87. $$ MTZ128-101015- Yellowstone County- 115 PM MDT Thu Jul 9 2026 .Tonight... * Sky/weather...........Mostly clear. * Min temperature.......60-65. * 24 hr trend.........Unchanged. * Max humidity..........42-47 percent. * 24 hr trend.........19 percent drier. * Wind (20 ft) * Plains...............North winds 5 to 10 mph. * Chance of lightning...2 percent. * CWR...................Zero. .FRIDAY... * Sky/weather...........Sunny. * Max temperature.......95-100. * 24 hr trend.........5 degrees warmer. * Min humidity..........15-20 percent. * 24 hr trend.........Unchanged. * Wind (20 ft) * Plains...............West winds 5 to 10 mph in the morning shifting to the southeast in the afternoon. * Chance of lightning...12 percent. * CWR...................Zero. .FRIDAY NIGHT... * Sky/weather...........Partly cloudy. * Min temperature.......63-68. * 24 hr trend.........3 degrees warmer. * Max humidity..........48-53 percent. * 24 hr trend.........6 percent wetter. * Wind (20 ft) * Plains...............East winds 5 to 10 mph in the evening shifting to the southwest overnight. * Chance of lightning...13 percent. * CWR...................Zero. .SATURDAY... * Sky/weather...........Sunny. * Max temperature.......102-107. * 24 hr trend.........7 degrees warmer. * Min humidity..........7-12 percent. * 24 hr trend.........8 percent drier. * Wind (20 ft) * Plains...............Southwest winds 5 to 15 mph. * Chance of lightning...0 percent. * CWR...................Zero. .Forecast days 3 through 7...... .SATURDAY NIGHT...Mostly clear. Lows 66 to 71. Southwest winds 5 to 15 mph. .SUNDAY...Partly cloudy. Lows 70 to 75. Highs 107 to 112. South winds 5 to 15 mph with gusts to around 30 mph. .MONDAY...Not as warm. Partly cloudy. Lows 68 to 73. Highs 96 to 101. Northeast winds 5 to 15 mph. .TUESDAY...Partly cloudy. Isolated showers and thunderstorms. Lows 66 to 71. Highs 93 to 98. Northeast winds 5 to 15 mph. .WEDNESDAY...Mostlycloudy. Scattered showers and thunderstorms. Lows 64 to 69. Highs 92 to 97. .THURSDAY...Mostly sunny. Highs 88 to 93. $$ MTZ129-101015- Crow Indian Reservation/Bighorn Canyon Rec Area- 115 PM MDT Thu Jul 9 2026 .Tonight... * Sky/weather...........Mostly clear. * Min temperature.......59-65 at 5000 feet...57-63 at 7000 feet. * 24 hr trend.........Unchanged. * Max humidity..........39-47 percent at 5000 feet...38-45 percent at 7000 feet. * 24 hr trend.........18 percent drier. * Wind (20 ft) * Slope/valley.........Northeast winds 5 to 10 mph in the evening shifting to the southeast 5 to 15 mph overnight. * Ridgetop.............Southwest 5 to 10 mph. * Chance of lightning...1 percent. * CWR...................Zero. .FRIDAY... * Sky/weather...........Sunny. * Max temperature.......85-95 at 5000 feet...77-85 at 7000 feet. * 24 hr trend.........6 degrees warmer. * Min humidity..........19-24 percent. * 24 hr trend.........3 percent drier. * Wind (20 ft) * Slope/valley.........Southwest winds 5 to 10 mph. * Ridgetop.............Southwest 5 to 15 mph. * Chance of lightning...14 percent. * CWR...................Zero. .FRIDAY NIGHT... * Sky/weather...........Mostly clear. * Min temperature.......63-68. * 24 hr trend.........4 degrees warmer. * Max humidity..........30-40 percent at 5000 feet...26-32 percent at 7000 feet. * 24 hr trend.........5 percent drier. * Wind (20 ft) * Slope/valley.........South winds 5 to 15 mph. * Ridgetop.............South 5 to 15 mph. * Chance of lightning...13 percent. * CWR...................Zero. .SATURDAY... * Sky/weather...........Sunny. * Max temperature.......91-101 at 5000 feet...83-91 at 7000 feet. * 24 hr trend.........6 degrees warmer. * Min humidity..........9-14 percent. * 24 hr trend.........10 percent drier. * Wind (20 ft) * Slope/valley.........Southwest winds 5 to 10 mph. * Ridgetop.............West 10 to 20 mph. * Chance of lightning...0 percent. * CWR...................Zero. .Forecast days 3 through 7...... .SATURDAY NIGHT...Mostly clear. Lows 65 to 73. South winds 5 to 10 mph. .SUNDAY...Mostly clear. Lows 66 to 73. Highs 96 to 106. South winds 10 to 20 mph with gusts to around 30 mph. .MONDAY...Mostly clear. Lows 65 to 72. Highs 87 to 97. Northeast winds 5 to 15 mph. .TUESDAY...Partly cloudy. Isolated showers and thunderstorms. Lows 64 to 70. Highs 84 to 94. East winds 5 to 15 mph. .WEDNESDAY...Partly cloudy. Scattered showers and thunderstorms. Lows 62 to 68. Highs 82 to 92. .THURSDAY...Mostly sunny. Highs 80 to 90. $$ MTZ130-101015- Northern Rosebud/Northern Treasure Counties- 115 PM MDT Thu Jul 9 2026 .Tonight... * Sky/weather...........Mostly clear. * Min temperature.......58-63. * 24 hr trend.........1 degree cooler. * Max humidity..........54-59 percent. * 24 hr trend.........28 percent drier. * Wind (20 ft) * Plains...............Northeast winds 5 to 10 mph. * Chance of lightning...1 percent. * CWR...................Zero. .FRIDAY... * Sky/weather...........Sunny. * Max temperature.......96-101. * 24 hr trend.........7 degrees warmer. * Min humidity..........16-21 percent. * 24 hr trend.........Unchanged. * Wind (20 ft) * Plains...............Southeast winds 5 to 10 mph. * Chance of lightning...5 percent. * CWR...................Zero. .FRIDAY NIGHT... * Sky/weather...........Partly cloudy. * Min temperature.......62-67. * 24 hr trend.........4 degrees warmer. * Max humidity..........55-60 percent. * 24 hr trend.........1 percent wetter. * Wind (20 ft) * Plains...............Southeast winds 5 to 10 mph. * Chance of lightning...12 percent. * CWR...................Zero. .SATURDAY... * Sky/weather...........Sunny. * Max temperature.......103-108. * 24 hr trend.........7 degrees warmer. * Min humidity..........9-14 percent. * 24 hr trend.........7 percent drier. * Wind (20 ft) * Plains...............Southwest winds 5 to 10 mph. * Chance of lightning...0 percent. * CWR...................Zero. .Forecast days 3 through 7...... .SATURDAY NIGHT...Mostly clear. Lows 66 to 71. South winds 5 to 10 mph. .SUNDAY...Mostly clear. Lows 70 to 75. Highs 109 to 114. Southeast winds 5 to 15 mph. .MONDAY...Not as warm. Mostly clear. Lows 67 to 72. Highs 97 to 102. Northeast winds 5 to 15 mph. .TUESDAY...Partly cloudy. Isolated showers and thunderstorms. Lows 66 to 71. Highs 93 to 98. East winds 5 to 15 mph. .WEDNESDAY...Partly cloudy. Scattered showers and isolated thunderstorms. Lows 64 to 69. Highs 92 to 97. .THURSDAY...Mostly sunny. Highs 89 to 94. $$ MTZ131-101015- Northern Cheyenne Indian Reservation/Ashland Ranger District Custer Natl Forest- 115 PM MDT Thu Jul 9 2026 .Tonight... * Sky/weather...........Mostly clear. * Min temperature.......58-63. * 24 hr trend.........2 degrees warmer. * Max humidity..........53-58 percent. * 24 hr trend.........29 percent drier. * Wind (20 ft) * Slope/valley.........North winds 5 to 10 mph in the evening shifting to the south overnight. * Ridgetop.............Southwest 5 to 15 mph. * Chance of lightning...2 percent. * CWR...................Zero. .FRIDAY... * Sky/weather...........Sunny. * Max temperature.......95-100. * 24 hr trend.........7 degrees warmer. * Min humidity..........14-19 percent. * 24 hr trend.........4 percent drier. * Wind (20 ft) * Slope/valley.........South winds 5 to 10 mph. * Ridgetop.............Southwest 5 to 15 mph. * Chance of lightning...11 percent. * CWR...................Zero. .FRIDAY NIGHT... * Sky/weather...........Mostly clear. * Min temperature.......64-69. * 24 hr trend.........6 degrees warmer. * Max humidity..........45-50 percent. * 24 hr trend.........8 percent drier. * Wind (20 ft) * Slope/valley.........Southeast winds 5 to 15 mph. * Ridgetop.............South 5 to 15 mph. * Chance of lightning...13 percent. * CWR...................Zero. .SATURDAY... * Sky/weather...........Sunny. * Max temperature.......102-107. * 24 hr trend.........7 degrees warmer. * Min humidity..........7-12 percent. * 24 hr trend.........7 percent drier. * Wind (20 ft) * Slope/valley.........Southwest winds 5 to 15 mph. * Ridgetop.............West 5 to 15 mph. * Chance of lightning...1 percent. * CWR...................Zero. .Forecast days 3 through 7...... .SATURDAY NIGHT...Mostly clear. Lows 66 to 71. South winds 5 to 15 mph. .SUNDAY...Mostly clear. Lows 71 to 76. Highs 107 to 112. South winds 10 to 20 mph with gusts to around 30 mph. .MONDAY...Mostly clear. Lows 66 to 71. Highs 98 to 103. Northeast winds 5 to 15 mph. .TUESDAY...Partly cloudy. Isolated showers and thunderstorms. Lows 66 to 71. Highs 95 to 100. East winds 5 to 15 mph. .WEDNESDAY...Partly cloudy. Scattered showers and thunderstorms. Lows 63 to 68. Highs 92 to 97. .THURSDAY...Mostly sunny. Highs 89 to 94. $$ MTZ132-101015- Custer County- 115 PM MDT Thu Jul 9 2026 .Tonight... * Sky/weather...........Mostly clear. * Min temperature.......57-62. * 24 hr trend.........2 degrees cooler. * Max humidity..........68-73 percent. * 24 hr trend.........10 percent wetter. * Wind (20 ft) * Plains...............North winds 5 to 15 mph in the evening shifting to the east 5 to 10 mph overnight. * Chance of lightning...0 percent. * CWR...................Zero. .FRIDAY... * Sky/weather...........Sunny. * Max temperature.......91-96. * 24 hr trend.........5 degrees warmer. * Min humidity..........17-22 percent.* 24 hr trend.........2 percent drier. * Wind (20 ft) * Plains...............Southeast winds 5 to 15 mph. * Chance of lightning...4 percent. * CWR...................Zero. .FRIDAY NIGHT... * Sky/weather...........Partly cloudy. * Min temperature.......65-70. * 24 hr trend.........8 degrees warmer. * Max humidity..........48-53 percent. * 24 hr trend.........20 percent drier. * Wind (20 ft) * Plains...............Southeast winds 5 to 15 mph. * Chance of lightning...9 percent. * CWR...................Zero. .SATURDAY... * Sky/weather...........Sunny. * Max temperature.......99-104. * 24 hr trend.........8 degrees warmer. * Min humidity..........11-16 percent. * 24 hr trend.........6 percent drier. * Wind (20 ft) * Plains...............South winds 10 to 20 mph. * Chance of lightning...1 percent. * CWR...................Zero. .Forecast days 3 through 7...... .SATURDAY NIGHT...Mostly clear. Lows 66 to 71. South winds 5 to 15 mph. .SUNDAY...Mostly clear. Lows 71 to 76. Highs 104 to 109. South winds 10 to 20 mph with gusts to around 30 mph. .MONDAY...Mostly clear. Lows 64 to 69. Highs 95 to 100. East winds 5 to 15 mph. .TUESDAY...Partly cloudy. Isolated showers. Lows 63 to 68. Highs 91 to 96. East winds 10 to 20 mph. .WEDNESDAY...Partly cloudy. Scattered showers and isolated thunderstorms. Lows 64 to 69. Highs 90 to 95. .THURSDAY...Sunny. Highs 87 to 92. $$ MTZ133-101015- Sioux Ranger District Custer National Forest- 115 PM MDT Thu Jul 9 2026 .Tonight... * Sky/weather...........Mostly clear. * Min temperature.......56-61. * 24 hr trend.........Unchanged. * Max humidity..........72-77 percent. * 24 hr trend.........3 percent drier. * Wind (20 ft) * Plains...............West winds 5 to 10 mph. * Chance of lightning...7 percent. * CWR...................Zero. .FRIDAY... * Sky/weather...........Sunny. * Max temperature.......90-95. * 24 hr trend.........4 degrees warmer. * Min humidity..........21-26 percent. * 24 hr trend.........5 percent drier. * Wind (20 ft) * Plains...............Southeast winds 5 to 15 mph. * Chance of lightning...5 percent. * CWR...................Zero. .FRIDAY NIGHT... * Sky/weather...........Mostly clear. * Min temperature.......62-67. * 24 hr trend.........6 degrees warmer. * Max humidity..........60-65 percent. * 24 hr trend.........12 percent drier. * Wind (20 ft) * Plains...............Southeast winds 10 to 20 mph. * Chance of lightning...3 percent. * CWR...................Zero. .SATURDAY... * Sky/weather...........Sunny. * Max temperature.......96-101. * 24 hr trend.........6 degrees warmer. * Min humidity..........16-21 percent. * 24 hr trend.........5 percent drier. * Wind (20 ft) * Plains...............South winds 5 to 15 mph. * Chance of lightning...2 percent. * CWR...................Zero. .Forecast days 3 through 7...... .SATURDAY NIGHT...Mostly clear. Lows 64 to 69. South winds 5 to 15 mph. .SUNDAY...Clear. Lows 69 to 74. Highs 101 to 106. South winds 10 to 20 mph with gusts to around 35 mph. .MONDAY...Mostly clear. Lows 65 to 70. Highs 97 to 102. Southeast winds 10 to 20 mph with gusts to around 30 mph. .TUESDAY...Mostly clear. Lows 64 to 69. Highs 91 to 96. East winds 10 to 20 mph with gusts to around 30 mph. .WEDNESDAY...Partly cloudy. Scattered showers and thunderstorms. Lows 63 to 68. Highs 90 to 95. .THURSDAY...Sunny. Highs 88 to 93. $$ WYZ274-101015- Sheridan County- 115 PM MDT Thu Jul 9 2026 .Tonight... * Sky/weather...........Mostly clear. * Min temperature.......53-58. * 24 hr trend.........1 degree warmer. * Max humidity..........45-50 percent. * 24 hr trend.........43 percent drier. * Wind (20 ft) * Slope/valley.........Southwestwinds 5 to 10 mph in the evening becoming light overnight. * Ridgetop.............South 5 to 10 mph. * Chance of lightning...3 percent. * CWR...................Zero. .FRIDAY... * Sky/weather...........Sunny. Isolated showers and thunderstorms in the afternoon. * Max temperature.......92-97. * 24 hr trend.........6 degrees warmer. * Min humidity..........17-22 percent. * 24 hr trend.........7 percent drier. * Wind (20 ft) * Slope/valley.........Light winds in the morning becoming south 5 to 10 mph in the afternoon. * Ridgetop.............Southwest 5 to 10 mph. * Chance of lightning...15 percent. * CWR...................Less than 10 percent. .FRIDAY NIGHT... * Sky/weather...........Mostly clear. * Min temperature.......57-62. * 24 hr trend.........4 degrees warmer. * Max humidity..........48-53 percent. * 24 hr trend.........3 percent wetter. * Wind (20 ft) * Slope/valley.........South winds 5 to 10 mph. * Ridgetop.............South 5 to 10 mph. * Chance of lightning...12 percent. * CWR...................Less than 10 percent. .SATURDAY... * Sky/weather...........Sunny. * Max temperature.......99-104. * 24 hr trend.........7 degrees warmer. * Min humidity..........8-13 percent. * 24 hr trend.........9 percent drier. * Wind (20 ft) * Slope/valley.........Light winds in the morning becoming west 5 to 10 mph in the afternoon. * Ridgetop.............West 5 to 15 mph. * Chance of lightning...0 percent. * CWR...................Zero. .Forecast days 3 through 7...... .SATURDAY NIGHT...Mostly clear. Lows 60 to 65. Southwest winds 5 to 10 mph. .SUNDAY...Mostly clear. Lows 66 to 71. Highs 105 to 110. South winds 10 to 20 mph with gusts to around 40 mph. .MONDAY...Mostly clear. Lows 62 to 67. Highs 96 to 101. Northwest winds 5 to 15 mph. .TUESDAY...Partly cloudy. Lows 62 to 67. Highs 94 to 99. South winds 5 to 10 mph. .WEDNESDAY...Partly cloudy. Scattered showers and thunderstorms. Lows 60 to 65. Highs 91 to 96. .THURSDAY...Mostly sunny. Scattered showers and thunderstorms. Highs 88 to 93. $$ WYZ284-101015- Bighorn National Forest- 115 PM MDT Thu Jul 9 2026 .Tonight... * Sky/weather...........Mostly clear. * Min temperature.......45-50. * 24 hr trend.........Unchanged. * Max humidity..........55-60 percent. * 24 hr trend.........26 percent drier. * Wind (20 ft) * At Burgess Jct.......East winds 5 to 10 mph in the evening shifting to the southwest 5 to 15 mph overnight. * Chance of lightning...12 percent. * CWR...................Zero. .FRIDAY... * Sky/weather...........Sunny. Isolated showers and thunderstorms in the afternoon. * Max temperature.......76-81. * 24 hr trend.........6 degrees warmer. * Min humidity..........16-21 percent. * 24 hr trend.........15 percent drier. * Wind (20 ft) * At Burgess Jct.......Southwest winds 5 to 15 mph. * Chance of lightning...15 percent. * CWR...................Less than 10 percent. .FRIDAY NIGHT... * Sky/weather...........Mostly clear. * Min temperature.......49-54. * 24 hr trend.........4 degrees warmer. * Max humidity..........41-46 percent. * 24 hr trend.........14 percent drier. * Wind (20 ft) * At Burgess Jct.......Southwest winds 5 to 15 mph. * Chance of lightning...7 percent. * CWR...................Less than 10 percent. .SATURDAY... * Sky/weather...........Sunny. * Max temperature.......82-87. * 24 hr trend.........6 degrees warmer. * Min humidity..........9-14 percent. * 24 hr trend.........7 percent drier. * Wind (20 ft) * At Burgess Jct.......Southwest winds 10 to 20 mph. * Chance of lightning...0 percent. * CWR...................Zero. .Forecast days 3 through 7...... .SATURDAY NIGHT...Mostly clear. Lows 53 to 58. Southwest winds 5 to 15 mph. .SUNDAY...Mostly clear. Lows 56 to 61. Highs 87 to 92. South winds 10 to 20 mph with gusts to around 30 mph. .MONDAY...Mostly clear. Lows 52 to 57. Highs 81 to 86. East winds 5 to 15 mph. .TUESDAY...Partly cloudy. Isolated showers and thunderstorms. Lows 51 to 56. Highs 78 to 83. Southeast winds 5 to 15 mph. .WEDNESDAY...Partly cloudy. Scattered showers and thunderstorms. Lows 50 to 55. Highs 76 to 81. .THURSDAY...Mostly sunny. Scattered showers and thunderstorms. Highs 74 to 79. $$ weather.gov/billings