Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS Billings, MT
Issued by NWS Billings, MT
352 FNUS55 KBYZ 280148 FWFBYZ Fire Weather Planning Forecast for SCen and SErn Montana National Weather Service Billings MT 748 PM MDT Wed Aug 27 2025 .DISCUSSION... Updated forecast for precipitation chances, temperatures, and winds through Thursday. Wetting rain chances will be elevated tomorrow over the western half of the forecast area. This area will also see cooler temperatures due to the abundant cloud cover and precipitation. Chambers Temperatures through the weekend will remain seasonable to below normal. Above average atmospheric moisture will create daily afternoon scattered showers and thunderstorms through Saturday. Given the environment and the expectation of slow moving storms, any thunderstorms will have the ability to produce heavy rainfall. Most locations over the lower elevations have a 25-50% chance of getting over 0.50 inches of rain. Ridging and dryer conditions look to return the beginning of next week. TS/LT MTZ123-281030- Gallatin National Forest- 748 PM MDT Wed Aug 27 2025 .Rest of Tonight... * Sky/weather...........Cloudy. Rain showers and scattered thunderstorms in the evening, then numerous rain showers and isolated thunderstorms overnight. * Min temperature.......46-55 at 5000 feet...42-52 at 7000 feet. * 24 hr trend.........1 degree cooler. * Max humidity..........94-99 percent. * 24 hr trend.........Unchanged. * Wind (20 ft) * Slope/valley.........Southeast winds 5 to 10 mph. * Ridgetop.............Southeast 10 to 20 mph. * Chance of lightning...25 percent. * CWR...................50 percent. .THURSDAY... * Sky/weather...........Cloudy. Rain showers and isolated thunderstorms in the morning, then rain showers and scattered thunderstorms in the afternoon. * Max temperature.......61-71 at 5000 feet...50-60 at 7000 feet. * 24 hr trend.........1 degree cooler. * Min humidity..........75-85 percent at 5000 feet...78-88 percent at 7000 feet. * 24 hr trend.........19 percent wetter. * Wind (20 ft) * Slope/valley.........Southeast winds 5 to 10 mph in the morning shifting to the northwest in the afternoon. * Ridgetop.............South 5 to 15 mph. * Chance of lightning...53 percent. * CWR...................80 percent. .THURSDAY NIGHT... * Sky/weather...........Mostly cloudy. Scattered showers and thunderstorms in the evening, then isolated rain showers overnight. * Min temperature.......47-57 at 5000 feet...41-51 at 7000 feet. * 24 hr trend.........1 degree cooler. * Max humidity..........89-99 percent at 5000 feet...87-97 percent at 7000 feet. * 24 hr trend.........3 percent wetter. * Wind (20 ft) * Slope/valley.........Light winds in the evening becoming south 5 to 10 mph overnight. * Ridgetop.............West 10 to 20 mph. * Chance of lightning...25 percent. * CWR...................40 percent. .FRIDAY... * Sky/weather...........Partly sunny. Scattered rain showers in the morning, then scattered rain showers and isolated thunderstorms in the afternoon. * Max temperature.......69-79 at 5000 feet...56-66 at 7000 feet. * 24 hr trend.........8 degrees warmer. * Min humidity..........41-51 percent at 5000 feet...46-56 percent at 7000 feet. * 24 hr trend.........37 percent drier. * Wind (20 ft) * Slope/valley.........West winds 5 to 10 mph. * Ridgetop.............West 10 to 20 mph. * Chance of lightning...23 percent. * CWR...................20 percent. .Forecast days 3 through 7...... .FRIDAY NIGHT...Partly cloudy. Isolated showers and thunderstorms. Lows 45 to 55. Southwest winds 5 to 10 mph. .SATURDAY...Mostly clear. Isolated showers. Lows 45 to 55. Highs 72 to 81. Southwest winds 5 to 10 mph. .SUNDAY...Mostly clear. Lows 47 to 57. Highs 77 to 86. Southwest winds 5 to 10 mph. .MONDAY...Partly cloudy. Isolated showers and thunderstorms. Lows 47 to 57. Highs 79 to 88. Southwest winds 5 to 10 mph. .TUESDAY...Partly cloudy. Scattered showers and thunderstorms. Lows 44 to 54. Highs 75 to 85. .WEDNESDAY...Mostly sunny. Scattered showers and isolated thunderstorms. Highs 71 to 81. $$ MTZ124-281030- Wheatland County/Sweet Grass County- 748 PM MDT Wed Aug 27 2025 .Rest of Tonight... * Sky/weather...........Cloudy with scattered rain showers. * Min temperature.......52-57. * 24 hr trend.........1 degree warmer. * Max humidity..........67-72 percent. * 24 hr trend.........18 percent wetter. * Wind (20 ft) * Plains...............Northeast winds 5 to 15 mph. * Chance of lightning...7 percent. * CWR...................Zero. .THURSDAY... * Sky/weather...........Mostly cloudy. Scattered rain showers in the morning, then numerous rain showers and scattered thunderstorms in the afternoon. * Max temperature.......70-75. * 24 hr trend.........3 degrees cooler. * Min humidity..........55-60 percent. * 24 hr trend.........30 percent wetter. * Wind (20 ft) * Plains...............Southwest winds 5 to 10 mph in the morning shifting to the southeast 5 to 15 mph in the afternoon. * Chance of lightning...36 percent. * CWR...................60 percent. .THURSDAY NIGHT... * Sky/weather...........Cloudy. Numerous rain showers and scattered thunderstorms in the evening, then scattered rain showers overnight. * Min temperature.......50-55. * 24 hr trend.........2 degrees cooler. * Max humidity..........89-94 percent. * 24 hr trend.........22 percent wetter. * Wind (20 ft) * Plains...............Northwest winds 5 to 15 mph. * Chance of lightning...28 percent. * CWR...................30 percent. .FRIDAY... * Sky/weather...........Mostly cloudy. Scattered rain showers in the morning, then scattered showers and thunderstorms in the afternoon. * Max temperature.......71-76. * 24 hr trend.........1 degree warmer. * Min humidity..........46-51 percent. * 24 hr trend.........9 percent drier. * Wind (20 ft) * Plains...............Northwest winds 5 to 15 mph. * Chance of lightning...27 percent. * CWR...................20 percent. .Forecast days 3 through 7...... .FRIDAY NIGHT...Mostly cloudy. Scattered showers and isolated thunderstorms. Lows 48 to 53. Northwest winds 5 to 15 mph. .SATURDAY...Partly cloudy. Isolated showers. Lows 46 to 51. Highs 76 to 81. West winds 5 to 15 mph. .SUNDAY...Mostly clear. Lows 48 to 53. Highs 82 to 87. South winds 5 to 15 mph. .MONDAY...Partly cloudy. Isolated showers. Lows 49 to 54. Highs 83 to 88. Northwest winds 5 to 15 mph. .TUESDAY...Partly cloudy. Isolated showers and thunderstorms. Lows 46 to 51. Highs 78 to 83. .WEDNESDAY...Mostly sunny. Isolated showers. Highs 77 to 82. $$ MTZ125-281030- Stillwater County- 748 PM MDT Wed Aug 27 2025 .Rest of Tonight... * Sky/weather...........Cloudy. Scattered rain showers and isolated thunderstorms in the evening, then isolated rain showers overnight. * Min temperature.......53-58. * 24 hr trend.........2 degrees cooler. * Max humidity..........81-86 percent. * 24 hr trend.........33 percent wetter. * Wind (20 ft) * Plains...............Southwest winds 5 to 10 mph. * Chance of lightning...19 percent. * CWR...................30 percent. .THURSDAY... * Sky/weather...........Mostly cloudy. Scattered rain showers in the morning, then rain showers and scattered thunderstorms in the afternoon. * Max temperature.......69-74. * 24 hr trend.........2 degrees warmer. * Min humidity..........65-70 percent. * 24 hr trend.........29 percent wetter. * Wind (20 ft) * Plains...............Northwest winds 5 to 10 mph. * Chance of lightning...43 percent. * CWR...................50 percent. .THURSDAY NIGHT... * Sky/weather...........Mostly cloudy. Numerous rain showers and scattered thunderstorms in the evening, then isolated rain showers overnight. * Min temperature.......50-55. * 24 hr trend.........3 degrees cooler. * Max humidity..........92-97 percent. * 24 hr trend.........11 percent wetter. * Wind (20 ft) * Plains...............Southwest winds 5 to 10 mph. * Chance of lightning...28 percent. * CWR...................40 percent. .FRIDAY... * Sky/weather...........Partly sunny. Scattered rain showers in the morning, then numerous rain showers and scattered thunderstorms in the afternoon. * Max temperature.......74-79. * 24 hr trend.........5 degrees warmer. * Min humidity..........39-44 percent. * 24 hr trend.........26 percent drier. * Wind (20 ft) * Plains...............Northwest winds 5 to 10 mph. * Chance of lightning...26 percent. * CWR...................20 percent. .Forecast days 3 through 7...... .FRIDAY NIGHT...Mostly cloudy. Scattered showers and isolated thunderstorms. Lows 50 to 55. West winds 5 to 10 mph. .SATURDAY...Partly cloudy. Scattered showers. Lows 49 to 54. Highs 77 to 82. West winds 5 to 10 mph. .SUNDAY...Mostly clear. Lows 52 to 57. Highs 83 to 88. South winds 5 to 10 mph. .MONDAY...Partly cloudy. Isolated showers. Lows 53 to 58. Highs 83 to 88. West winds 5 to 10 mph. .TUESDAY...Partly cloudy. Scattered showers and isolated thunderstorms. Lows 50 to 55. Highs 79 to 84. .WEDNESDAY...Mostly sunny. Scattered showers and isolated thunderstorms. Highs 79 to 84. $$ MTZ126-281030- Beartooth Ranger District Custer National Forest- 748 PM MDT Wed Aug 27 2025 .Rest of Tonight... * Sky/weather...........Cloudy. Scattered rain showers and isolated thunderstorms in the evening, then scattered rain showers overnight. * Min temperature.......54-59 at 5000 feet...45-55 at 7000 feet. * 24 hr trend.........4 degrees cooler. * Max humidity..........79-88 percent at 5000 feet...83-93 percent at 7000 feet. * 24 hr trend.........39 percent wetter. * Wind (20 ft) * Slope/valley.........Southwest winds 5 to 10 mph. * Ridgetop.............Southeast 5 to 15 mph. * Chance of lightning...19 percent. * CWR...................30 percent. .THURSDAY... * Sky/weather...........Mostly cloudy. Scattered rain showers in the morning, then rain showers and scattered thunderstorms in the afternoon. * Max temperature.......66-73 at 5000 feet...55-65 at 7000 feet. * 24 hr trend.........1 degree cooler. * Min humidity..........61-71 percent at 5000 feet...69-79 percent at 7000 feet. * 24 hr trend.........34 percent wetter. * Wind (20 ft) * Slope/valley.........South winds 5 to 10 mph in the morning shifting to the northeast in the afternoon. * Ridgetop.............Southwest 5 to 15 mph. * Chance of lightning...47 percent. * CWR...................80 percent. .THURSDAY NIGHT... * Sky/weather...........Mostly cloudy. Numerous rain showers and scattered thunderstorms in the evening, then isolated rain showers overnight. * Min temperature.......51-59 at 5000 feet...44-54 at 7000 feet. * 24 hr trend.........2 degrees cooler. * Max humidity..........94-99 percent. * 24 hr trend.........5 percent wetter. * Wind (20 ft) * Slope/valley.........West winds 5 to 10 mph. * Ridgetop.............West 5 to 15 mph. * Chance of lightning...28 percent. * CWR...................60 percent. .FRIDAY... * Sky/weather...........Partly sunny. Scattered rain showers in the morning, then numerous rain showers and scattered thunderstorms in the afternoon. * Max temperature.......68-76 at 5000 feet...58-68 at 7000 feet. * 24 hr trend.........3 degrees warmer. * Min humidity..........43-53 percent at 5000 feet...52-62 percent at 7000 feet. * 24 hr trend.........21 percent drier. * Wind (20 ft) * Slope/valley.........Northwest winds 5 to 10 mph. * Ridgetop.............Northwest 10 to 20 mph. * Chance of lightning...28 percent. * CWR...................50 percent. .Forecast days 3 through 7...... .FRIDAY NIGHT...Mostly cloudy. Scattered showers and isolated thunderstorms. Lows 51 to 57. Northwest winds 5 to 10 mph. .SATURDAY...Partly cloudy. Scattered showers. Lows 51 to 58. Highs 69 to 78. Northwest winds 5 to 10 mph. .SUNDAY...Mostly clear. Lows 53 to 60. Highs 74 to 83. South winds 5 to 10 mph. .MONDAY...Partly cloudy. Isolated showers and thunderstorms. Lows 54 to 60. Highs 77 to 86. West winds 5 to 10 mph. .TUESDAY...Partly cloudy. Scattered showers and isolated thunderstorms. Lows 51 to 58. Highs 73 to 82. .WEDNESDAY...Mostly sunny. Scattered showers and isolated thunderstorms. Highs 69 to 79. $$ MTZ127-281030- Golden Valley County/Musselshell county- 748 PM MDT Wed Aug 27 2025 .Rest of Tonight... * Sky/weather...........Cloudy. Scattered rain showers and isolated thunderstorms in the evening, then isolated rain showers overnight. * Min temperature.......59-64. * 24 hr trend.........1 degree warmer. * Max humidity..........72-77 percent. * 24 hr trend.........30 percent wetter. * Wind (20 ft) * Plains...............Southeast winds 5 to 10 mph. * Chance of lightning...17 percent. * CWR...................Zero. .THURSDAY... * Sky/weather...........Mostly cloudy. Isolated rain showers in the morning, then scattered thunderstorms and rain showers in the afternoon. * Max temperature.......71-76. * 24 hr trend.........6 degrees cooler. * Min humidity..........55-60 percent. * 24 hr trend.........31 percent wetter. * Wind (20 ft) * Plains...............Southeast winds 5 to 10 mph. * Chance of lightning...26 percent. * CWR...................10 percent. .THURSDAY NIGHT... * Sky/weather...........Cloudy. Scattered showers and thunderstorms in the evening, then scattered rain showers overnight. * Min temperature.......57-62. * 24 hr trend.........2 degrees cooler. * Max humidity..........92-97 percent. * 24 hr trend.........20 percent wetter. * Wind (20 ft) * Plains...............East winds 5 to 10 mph in the evening shifting to the north overnight. * Chance of lightning...30 percent. * CWR...................40 percent. .FRIDAY... * Sky/weather...........Mostly cloudy. Scattered rain showers in the morning, then scattered showers and thunderstorms in the afternoon. * Max temperature.......69-74. * 24 hr trend.........2 degrees cooler. * Min humidity..........56-61 percent. * 24 hr trend.........1 percent wetter. * Wind (20 ft) * Plains...............North winds 5 to 10 mph. * Chance of lightning...29 percent. * CWR...................40 percent. .Forecast days 3 through 7...... .FRIDAY NIGHT...Mostly cloudy. Scattered showers and thunderstorms. Lows 54 to 59. North winds 5 to 10 mph. .SATURDAY...Partly cloudy. Isolated showers. Lows 53 to 58. Highs 73 to 78. Northwest winds 5 to 10 mph. .SUNDAY...Mostly clear. Lows 55 to 60. Highs 80 to 85. South winds 5 to 10 mph. .MONDAY...Mostly clear. Lows 56 to 61. Highs 82 to 87. North winds 5 to 10 mph. .TUESDAY...Partly cloudy. Isolated showers. Lows 51 to 56. Highs 77 to 82. .WEDNESDAY...Mostly sunny. Highs 75 to 80. $$ MTZ128-281030- Yellowstone County- 748 PM MDT Wed Aug 27 2025 .Rest of Tonight... * Sky/weather...........Cloudy. Scattered rain showers and isolated thunderstorms in the evening, then isolated rain showers overnight. * Min temperature.......59-64. * 24 hr trend.........1 degree warmer. * Max humidity..........72-77 percent. * 24 hr trend.........26 percent wetter. * Wind (20 ft) * Plains...............South winds 5 to 15 mph in the evening shifting to the northwest 5 to 10 mph overnight. * Chance of lightning...21 percent. * CWR...................10 percent. .THURSDAY... * Sky/weather...........Mostly cloudy. Isolated rain showers in the morning, then numerous rain showers and scattered thunderstorms in the afternoon. * Max temperature.......74-79. * 24 hr trend.........5 degrees cooler. * Min humidity..........54-59 percent. * 24 hr trend.........27 percent wetter. * Wind (20 ft) * Plains...............East winds 5 to 10 mph. * Chance of lightning...32 percent. * CWR...................50 percent. .THURSDAY NIGHT... * Sky/weather...........Mostly cloudy. Scattered showers and thunderstorms in the evening, then isolated rain showers overnight. * Min temperature.......57-62. * 24 hr trend.........2 degrees cooler. * Max humidity..........89-94 percent. * 24 hr trend.........17 percent wetter. * Wind (20 ft) * Plains...............North winds 5 to 15 mph in the evening shifting to the west 5 to 10 mph overnight. * Chance of lightning...28 percent. * CWR...................40 percent. .FRIDAY... * Sky/weather...........Partly sunny. Scattered rain showers in the morning, then scattered showers and thunderstorms in the afternoon. * Max temperature.......74-79. * 24 hr trend.........Unchanged. * Min humidity..........46-51 percent. * 24 hr trend.........8 percent drier. * Wind (20 ft) * Plains...............Northwest winds 5 to 10 mph. * Chance of lightning...25 percent. * CWR...................10 percent. .Forecast days 3 through 7...... .FRIDAY NIGHT...Mostly cloudy. Scattered showers and thunderstorms. Lows 54 to 59. North winds 5 to 15 mph. .SATURDAY...Partly cloudy. Isolated showers. Lows 53 to 58. Highs 79 to 84. Northwest winds 5 to 10 mph. .SUNDAY...Mostly clear. Lows 55 to 60. Highs 84 to 89. South winds 5 to 10 mph. .MONDAY...Mostly clear. Lows 55 to 60. Highs 86 to 91. Northwest winds 5 to 10 mph. .TUESDAY...Partly cloudy. Isolated showers. Lows 53 to 58. Highs 82 to 87. .WEDNESDAY...Mostly sunny. Isolated showers. Highs 80 to 85. $$ MTZ129-281030- Crow Indian Reservation/Bighorn Canyon Rec Area- 748 PM MDT Wed Aug 27 2025 .Rest of Tonight... * Sky/weather...........Cloudy. Numerous rain showers and scattered thunderstorms in the evening, then isolated rain showers overnight. * Min temperature.......56-61 at 5000 feet...52-57 at 7000 feet. * 24 hr trend.........Unchanged. * Max humidity..........79-89 percent at 5000 feet...82-91 percent at 7000 feet. * 24 hr trend.........25 percent wetter. * Wind (20 ft) * Slope/valley.........Southeast winds 5 to 15 mph. * Ridgetop.............Southeast 5 to 15 mph. * Chance of lightning...26 percent. * CWR...................10 percent. .THURSDAY... * Sky/weather...........Mostly cloudy. Scattered rain showers in the morning, then scattered thunderstorms and rain showers in the afternoon. * Max temperature.......63-73 at 5000 feet...55-63 at 7000 feet. * 24 hr trend.........10 degrees cooler. * Min humidity..........60-70 percent at 5000 feet...70-80 percent at 7000 feet. * 24 hr trend.........34 percent wetter. * Wind (20 ft) * Slope/valley.........Southeast winds 5 to 15 mph. * Ridgetop.............Southeast 10 to 20 mph. * Chance of lightning...33 percent. * CWR...................50 percent. .THURSDAY NIGHT... * Sky/weather...........Mostly cloudy. Numerous rain showers and scattered thunderstorms in the evening, then scattered rain showers overnight. * Min temperature.......54-59 at 5000 feet...50-55 at 7000 feet. * 24 hr trend.........3 degrees cooler. * Max humidity..........82-92 percent at 5000 feet...89-95 percent at 7000 feet. * 24 hr trend.........9 percent wetter. * Wind (20 ft) * Slope/valley.........South winds 5 to 10 mph. * Ridgetop.............West 10 to 20 mph. * Chance of lightning...36 percent. * CWR...................30 percent. .FRIDAY... * Sky/weather...........Partly sunny. Scattered rain showers in the morning, then scattered showers and thunderstorms in the afternoon. * Max temperature.......65-75 at 5000 feet...56-65 at 7000 feet. * 24 hr trend.........2 degrees cooler. * Min humidity..........45-55 percent at 5000 feet...60-70 percent at 7000 feet. * 24 hr trend.........3 percent drier. * Wind (20 ft) * Slope/valley.........Northwest winds 5 to 15 mph. * Ridgetop.............West 15 to 30 mph. * Chance of lightning...30 percent. * CWR...................20 percent. .Forecast days 3 through 7...... .FRIDAY NIGHT...Mostly cloudy. Scattered showers and thunderstorms. Lows 52 to 57. Northwest winds 5 to 10 mph. .SATURDAY...Partly cloudy. Scattered showers. Lows 52 to 58. Highs 68 to 78. West winds 5 to 10 mph. .SUNDAY...Mostly clear. Lows 55 to 60. Highs 73 to 83. Southeast winds 5 to 10 mph. .MONDAY...Mostly clear. Lows 55 to 60. Highs 76 to 86. Southeast winds 5 to 10 mph. .TUESDAY...Partly cloudy. Scattered showers. Lows 52 to 57. Highs 72 to 82. .WEDNESDAY...Mostly sunny. Isolated showers. Highs 69 to 79. $$ MTZ130-281030- Northern Rosebud/Northern Treasure Counties- 748 PM MDT Wed Aug 27 2025 .Rest of Tonight... * Sky/weather...........Mostly cloudy. Isolated rain showers in the evening. * Min temperature.......59-64. * 24 hr trend.........5 degrees warmer. * Max humidity..........72-77 percent. * 24 hr trend.........21 percent wetter. * Wind (20 ft) * Plains...............East winds 5 to 15 mph. * Chance of lightning...9 percent. * CWR...................Zero. .THURSDAY... * Sky/weather...........Mostly cloudy. Scattered rain showers in the morning, then scattered rain showers and isolated thunderstorms in the afternoon. * Max temperature.......80-85. * 24 hr trend.........3 degrees cooler. * Min humidity..........41-46 percent. * 24 hr trend.........23 percent wetter. * Wind (20 ft) * Plains...............Southeast winds 5 to 15 mph. * Chance of lightning...19 percent. * CWR...................10 percent. .THURSDAY NIGHT... * Sky/weather...........Cloudy. Scattered rain showers and isolated thunderstorms in the evening, then scattered rain showers overnight. * Min temperature.......57-62. * 24 hr trend.........2 degrees cooler. * Max humidity..........93-98 percent. * 24 hr trend.........21 percent wetter. * Wind (20 ft) * Plains...............Southeast winds 5 to 10 mph. * Chance of lightning...21 percent. * CWR...................30 percent. .FRIDAY... * Sky/weather...........Mostly cloudy. Scattered rain showers in the morning, then scattered rain showers and isolated thunderstorms in the afternoon. * Max temperature.......71-76. * 24 hr trend.........9 degrees cooler. * Min humidity..........50-55 percent. * 24 hr trend.........9 percent wetter. * Wind (20 ft) * Plains...............North winds 5 to 10 mph. * Chance of lightning...18 percent. * CWR...................20 percent. .Forecast days 3 through 7...... .FRIDAY NIGHT...Mostly cloudy. Scattered showers and isolated thunderstorms. Lows 55 to 60. North winds 5 to 10 mph. .SATURDAY...Partly cloudy. Isolated showers. Lows 53 to 58. Highs 77 to 82. Northeast winds 5 to 10 mph. .SUNDAY...Mostly clear. Lows 56 to 61. Highs 82 to 87. Southeast winds 5 to 10 mph. .MONDAY...Mostly clear. Lows 57 to 62. Highs 85 to 90. East winds 5 to 10 mph. .TUESDAY...Partly cloudy. Isolated showers. Lows 53 to 58. Highs 82 to 87. .WEDNESDAY...Mostly sunny. Highs 76 to 81. $$ MTZ131-281030- Northern Cheyenne Indian Reservation/Ashland Ranger District Custer Natl Forest- 748 PM MDT Wed Aug 27 2025 .Rest of Tonight... * Sky/weather...........Cloudy. Scattered rain showers and isolated thunderstorms in the evening, then isolated rain showers overnight. * Min temperature.......57-62. * 24 hr trend.........3 degrees warmer. * Max humidity..........85-90 percent. * 24 hr trend.........21 percent wetter. * Wind (20 ft) * Slope/valley.........Southeast winds 5 to 10 mph. * Ridgetop.............Southeast 5 to 15 mph. * Chance of lightning...24 percent. * CWR...................Less than 10 percent. .THURSDAY... * Sky/weather...........Mostly cloudy. Isolated rain showers in the morning, then numerous rain showers and scattered thunderstorms in the afternoon. * Max temperature.......73-78. * 24 hr trend.........12 degrees cooler. * Min humidity..........46-51 percent. * 24 hr trend.........18 percent wetter. * Wind (20 ft) * Slope/valley.........Southeast winds 5 to 15 mph. * Ridgetop.............Southeast 10 to 20 mph. * Chance of lightning...30 percent. * CWR...................40 percent. .THURSDAY NIGHT... * Sky/weather...........Mostly cloudy. Numerous rain showers and scattered thunderstorms in the evening, then scattered rain showers and isolated thunderstorms overnight. * Min temperature.......54-59. * 24 hr trend.........3 degrees cooler. * Max humidity..........100 percent. * 24 hr trend.........11 percent wetter. * Wind (20 ft) * Slope/valley.........South winds 5 to 10 mph. * Ridgetop.............Southwest 5 to 15 mph. * Chance of lightning...37 percent. * CWR...................50 percent. .FRIDAY... * Sky/weather...........Partly sunny. Scattered rain showers in the morning, then scattered showers and thunderstorms in the afternoon. * Max temperature.......73-78. * 24 hr trend.........Unchanged. * Min humidity..........49-54 percent. * 24 hr trend.........3 percent wetter. * Wind (20 ft) * Slope/valley.........Northwest winds 5 to 10 mph. * Ridgetop.............West 10 to 20 mph. * Chance of lightning...31 percent. * CWR...................20 percent. .Forecast days 3 through 7...... .FRIDAY NIGHT...Mostly cloudy. Scattered showers and thunderstorms. Lows 52 to 57. Northwest winds 5 to 10 mph. .SATURDAY...Partly cloudy. Scattered showers. Lows 50 to 55. Highs 75 to 80. North winds 5 to 10 mph. .SUNDAY...Mostly clear. Lows 52 to 57. Highs 82 to 87. Southeast winds 5 to 10 mph. .MONDAY...Mostly clear. Lows 53 to 58. Highs 85 to 90. Southeast winds 5 to 10 mph. .TUESDAY...Partly cloudy. Isolated showers. Lows 51 to 56. Highs 81 to 86. .WEDNESDAY...Mostly sunny. Highs 76 to 81. $$ MTZ132-281030- Custer County- 748 PM MDT Wed Aug 27 2025 .Rest of Tonight... * Sky/weather...........Mostly cloudy. * Min temperature.......56-61. * 24 hr trend.........2 degrees warmer. * Max humidity..........66-71 percent. * 24 hr trend.........1 percent wetter. * Wind (20 ft) * Plains...............Southeast winds 5 to 15 mph. * Chance of lightning...1 percent. * CWR...................Zero. .THURSDAY... * Sky/weather...........Partly sunny. * Max temperature.......78-83. * 24 hr trend.........4 degrees cooler. * Min humidity..........31-36 percent. * 24 hr trend.........15 percent wetter. * Wind (20 ft) * Plains...............Southeast winds 5 to 15 mph. * Chance of lightning...6 percent. * CWR...................Zero. .THURSDAY NIGHT... * Sky/weather...........Cloudy with scattered rain showers and isolated thunderstorms. * Min temperature.......57-62. * 24 hr trend.........1 degree warmer. * Max humidity..........82-87 percent. * 24 hr trend.........16 percent wetter. * Wind (20 ft) * Plains...............Southeast winds 5 to 15 mph. * Chance of lightning...19 percent. * CWR...................20 percent. .FRIDAY... * Sky/weather...........Mostly cloudy. Scattered rain showers in the morning, then scattered rain showers and isolated thunderstorms in the afternoon. * Max temperature.......69-74. * 24 hr trend.........9 degrees cooler. * Min humidity..........54-59 percent. * 24 hr trend.........23 percent wetter. * Wind (20 ft) * Plains...............East winds 5 to 15 mph. * Chance of lightning...24 percent. * CWR...................30 percent. .Forecast days 3 through 7...... .FRIDAY NIGHT...Mostly cloudy. Scattered showers and isolated thunderstorms. Lows 55 to 60. North winds 5 to 10 mph. .SATURDAY...Mostly cloudy. Scattered showers and isolated thunderstorms. Lows 54 to 59. Highs 71 to 76. North winds 5 to 10 mph. .SUNDAY...Mostly clear. Lows 54 to 59. Highs 77 to 82. Southeast winds 5 to 10 mph. .MONDAY...Mostly clear. Lows 55 to 60. Highs 81 to 86. Southeast winds 5 to 10 mph. .TUESDAY...Partly cloudy. Isolated showers. Lows 51 to 56. Highs 78 to 83. .WEDNESDAY...Mostly sunny. Highs 70 to 75. $$ MTZ133-281030- Sioux Ranger District Custer National Forest- 748 PM MDT Wed Aug 27 2025 .Rest of Tonight... * Sky/weather...........Mostly cloudy. * Min temperature.......56-61. * 24 hr trend.........3 degrees warmer. * Max humidity..........72-77 percent. * 24 hr trend.........19 percent drier. * Wind (20 ft) * Plains...............East winds 5 to 15 mph. * Chance of lightning...3 percent. * CWR...................Zero. .THURSDAY... * Sky/weather...........Partly sunny. * Max temperature.......78-83. * 24 hr trend.........4 degrees cooler. * Min humidity..........36-41 percent. * 24 hr trend.........14 percent wetter. * Wind (20 ft) * Plains...............Southeast winds 5 to 15 mph. * Chance of lightning...5 percent. * CWR...................Zero. .THURSDAY NIGHT... * Sky/weather...........Cloudy. Numerous rain showers and scattered thunderstorms in the evening, then scattered rain showers and isolated thunderstorms overnight. * Min temperature.......57-62. * 24 hr trend.........1 degree warmer. * Max humidity..........88-93 percent. * 24 hr trend.........16 percent wetter. * Wind (20 ft) * Plains...............Southeast winds 5 to 15 mph. * Chance of lightning...27 percent. * CWR...................40 percent. .FRIDAY... * Sky/weather...........Mostly cloudy. Scattered rain showers and isolated thunderstorms in the morning, then scattered showers and thunderstorms in the afternoon. * Max temperature.......72-77. * 24 hr trend.........6 degrees cooler. * Min humidity..........58-63 percent. * 24 hr trend.........22 percent wetter. * Wind (20 ft) * Plains...............Southeast winds 5 to 15 mph. * Chance of lightning...33 percent. * CWR...................30 percent. .Forecast days 3 through 7...... .FRIDAY NIGHT...Mostly cloudy. Scattered showers and thunderstorms. Lows 54 to 59. East winds 5 to 15 mph. .SATURDAY...Mostly cloudy. Scattered showers. Lows 53 to 58. Highs 73 to 78. North winds 5 to 10 mph. .SUNDAY...Mostly clear. Lows 52 to 57. Highs 77 to 82. Southeast winds 5 to 10 mph. .MONDAY...Partly cloudy. Lows 53 to 58. Highs 81 to 86. Southeast winds 5 to 15 mph. .TUESDAY...Partly cloudy. Scattered showers. Lows 51 to 56. Highs 81 to 86. .WEDNESDAY...Mostly sunny. Isolated showers. Highs 71 to 76. $$ WYZ274-281030- Sheridan County- 748 PM MDT Wed Aug 27 2025 .Rest of Tonight... * Sky/weather...........Cloudy. Scattered rain showers and isolated thunderstorms in the evening, then isolated rain showers overnight. * Min temperature.......52-57. * 24 hr trend.........1 degree cooler. * Max humidity..........91-96 percent. * 24 hr trend.........34 percent wetter. * Wind (20 ft) * Slope/valley.........West winds 5 to 10 mph in the evening shifting to the southeast overnight. * Ridgetop.............Southeast 10 to 20 mph. * Chance of lightning...23 percent. * CWR...................20 percent. .THURSDAY... * 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.......72-77. * 24 hr trend.........6 degrees cooler. * Min humidity..........56-61 percent. * 24 hr trend.........32 percent wetter. * Wind (20 ft) * Slope/valley.........Southeast winds 5 to 10 mph. * Ridgetop.............Southeast 5 to 15 mph. * Chance of lightning...42 percent. * CWR...................40 percent. .THURSDAY NIGHT... * Sky/weather...........Mostly cloudy. Numerous rain showers and scattered thunderstorms in the evening, then scattered rain showers overnight. * Min temperature.......49-54. * 24 hr trend.........3 degrees cooler. * Max humidity..........100 percent. * 24 hr trend.........7 percent wetter. * Wind (20 ft) * Slope/valley.........Southwest winds 5 to 10 mph. * Ridgetop.............West 5 to 15 mph. * Chance of lightning...36 percent. * CWR...................60 percent. .FRIDAY... * Sky/weather...........Partly sunny. Scattered rain showers in the morning, then numerous rain showers and scattered thunderstorms in the afternoon. * Max temperature.......74-79. * 24 hr trend.........2 degrees warmer. * Min humidity..........52-57 percent. * 24 hr trend.........4 percent drier. * Wind (20 ft) * Slope/valley.........Northwest winds 5 to 10 mph. * Ridgetop.............West 15 to 25 mph. * Chance of lightning...34 percent. * CWR...................40 percent. .Forecast days 3 through 7...... .FRIDAY NIGHT...Mostly cloudy. Scattered showers and thunderstorms. Lows 48 to 53. Northwest winds 5 to 10 mph. .SATURDAY...Partly cloudy. Scattered showers and isolated thunderstorms. Lows 47 to 52. Highs 74 to 79. Northwest winds 5 to 10 mph. .SUNDAY...Mostly clear. Lows 49 to 54. Highs 80 to 85. Southeast winds 5 to 10 mph. .MONDAY...Mostly clear. Lows 50 to 55. Highs 83 to 88. South winds 5 to 10 mph. .TUESDAY...Partly cloudy. Isolated showers and thunderstorms. Lows 48 to 53. Highs 79 to 84. .WEDNESDAY...Mostly sunny. Isolated showers. Highs 76 to 81. $$ WYZ284-281030- Bighorn National Forest- 748 PM MDT Wed Aug 27 2025 .Rest of Tonight... * Sky/weather...........Cloudy. Numerous rain showers and isolated thunderstorms in the evening, then scattered rain showers overnight. Patchy fog overnight. * Min temperature.......43-48. * 24 hr trend.........3 degrees cooler. * Max humidity..........88-93 percent. * 24 hr trend.........27 percent wetter. * Wind (20 ft) * At Burgess Jct.......South winds 5 to 10 mph. * Chance of lightning...24 percent. * CWR...................60 percent. .THURSDAY... * Sky/weather...........Mostly cloudy. Scattered rain showers in the morning, then rain showers and scattered thunderstorms in the afternoon. * Max temperature.......55-60. * 24 hr trend.........11 degrees cooler. * Min humidity..........74-79 percent. * 24 hr trend.........48 percent wetter. * Wind (20 ft) * At Burgess Jct.......South winds 5 to 10 mph in the morning shifting to the east in the afternoon. * Chance of lightning...44 percent. * CWR...................70 percent. .THURSDAY NIGHT... * Sky/weather...........Mostly cloudy. Numerous rain showers and scattered thunderstorms in the evening, then scattered rain showers overnight. * Min temperature.......41-46. * 24 hr trend.........2 degrees cooler. * Max humidity..........100 percent. * 24 hr trend.........10 percent wetter. * Wind (20 ft) * At Burgess Jct.......West winds 5 to 10 mph. * Chance of lightning...34 percent. * CWR...................60 percent. .FRIDAY... * Sky/weather...........Mostly cloudy. Scattered rain showers in the morning, then numerous rain showers and scattered thunderstorms in the afternoon. * Max temperature.......57-62. * 24 hr trend.........2 degrees warmer. * Min humidity..........53-58 percent. * 24 hr trend.........21 percent drier. * Wind (20 ft) * At Burgess Jct.......Northwest winds 5 to 15 mph. * Chance of lightning...34 percent. * CWR...................50 percent. .Forecast days 3 through 7...... .FRIDAY NIGHT...Mostly cloudy. Scattered showers and thunderstorms. Lows 38 to 43. Northwest winds 5 to 15 mph. .SATURDAY...Partly cloudy. Scattered showers and isolated thunderstorms. Lows 40 to 45. Highs 59 to 64. West winds 5 to 15 mph. .SUNDAY...Mostly clear. Lows 42 to 47. Highs 64 to 69. West winds 5 to 15 mph. .MONDAY...Partly cloudy. Isolated showers. Lows 42 to 47. Highs 67 to 72. Southwest winds 5 to 15 mph. .TUESDAY...Mostly cloudy. Scattered showers and isolated thunderstorms. Lows 40 to 45. Highs 64 to 69. .WEDNESDAY...Mostly sunny. Scattered showers. Highs 61 to 66. $$ weather.gov/billings