FNUS55 KBYZ 210833 FWFBYZ Fire Weather Planning Forecast for SCen and SErn Montana National Weather Service Billings MT 233 AM MDT Sun Jun 21 2026 .DISCUSSION... Unsettled weather will continue through Monday with periods of showers and thunderstorms, greatest over eastern districts. Some of the thunderstorms could be strong to severe on Monday afternoon. There are moderate to high wetting rain chances over the eastern districts through Monday, with lower chances elsewhere. Conditions trend warmer for the middle to latter part of this week with seasonal temperatures and generally low shower/thunderstorm chances. A more significant storm system could impact the region next weekend. Palmquist MTZ123-212230- Gallatin National Forest- 233 AM MDT Sun Jun 21 2026 .Today... * Sky/weather...........Mostly sunny. * Max temperature.......70-80 at 5000 feet...57-67 at 7000 feet. * 24 hr trend.........3 degrees warmer. * Min humidity..........22-32 percent at 5000 feet...27-37 percent at 7000 feet. * 24 hr trend.........22 percent drier. * Wind (20 ft) * Slope/valley.........West winds 5 to 10 mph. * Ridgetop.............West 5 to 15 mph. * Chance of lightning...8 percent. * CWR...................Zero. .TONIGHT... * Sky/weather...........Partly cloudy. Isolated showers and thunderstorms in the evening. * Min temperature.......42-52 at 5000 feet...39-49 at 7000 feet. * 24 hr trend.........2 degrees cooler. * Max humidity..........80-90 percent at 5000 feet...77-87 percent at 7000 feet. * 24 hr trend.........16 percent drier. * Wind (20 ft) * Slope/valley.........North winds 5 to 10 mph in the evening becoming light overnight. * Ridgetop.............Northwest 5 to 10 mph. * Chance of lightning...16 percent. * CWR...................Less than 10 percent. .MONDAY... * Sky/weather...........Mostly sunny. Isolated showers and thunderstorms in the afternoon. * Max temperature.......67-77 at 5000 feet...54-64 at 7000 feet. * 24 hr trend.........4 degrees cooler. * Min humidity..........36-46 percent at 5000 feet...41-51 percent at 7000 feet. * 24 hr trend.........7 percent wetter. * Wind (20 ft) * Slope/valley.........Northwest winds 5 to 10 mph. * Ridgetop.............Northwest 5 to 15 mph. * Chance of lightning...19 percent. * CWR...................10 percent. .Forecast days 3 through 7...... .MONDAY NIGHT...Mostly clear. Lows 39 to 49. North winds 5 to 10 mph. .TUESDAY...Mostly clear. Lows 41 to 51. Highs 70 to 80. Northeast winds 5 to 10 mph. .WEDNESDAY...Partly cloudy. Lows 44 to 54. Highs 73 to 83. Northeast winds 5 to 10 mph. .THURSDAY...Mostly cloudy. Scattered showers and thunderstorms. Lows 47 to 57. Highs 77 to 87. Southwest winds 5 to 10 mph. .FRIDAY...Mostly cloudy. Scattered showers and isolated thunderstorms. Lows 46 to 56. Highs 78 to 88. .SATURDAY...Cooler. Mostly cloudy. Numerous showers and scattered thunderstorms. Highs 65 to 75. $$ MTZ124-212230- Wheatland County/Sweet Grass County- 233 AM MDT Sun Jun 21 2026 .Today... * Sky/weather...........Sunny. * Max temperature.......73-78. * 24 hr trend.........2 degrees cooler. * Min humidity..........25-30 percent. * 24 hr trend.........4 percent drier. * Wind (20 ft) * Plains...............Northwest winds 10 to 20 mph. * Chance of lightning...8 percent. * CWR...................Zero. .TONIGHT... * Sky/weather...........Mostly cloudy with scattered rain showers and isolated thunderstorms. * Min temperature.......45-50. * 24 hr trend.........3 degrees cooler. * Max humidity..........80-85 percent. * 24 hr trend.........4 percent drier. * Wind (20 ft) * Plains...............Northeast winds 5 to 15 mph in the evening shifting to the west 5 to 10 mph overnight. * Chance of lightning...24 percent. * CWR...................20 percent. .MONDAY... * Sky/weather...........Partly sunny. Scattered rain showers in the morning, then rain showers and scattered thunderstorms in the afternoon. * Max temperature.......65-70. * 24 hr trend.........8 degrees cooler. * Min humidity..........42-47 percent. * 24 hr trend.........17 percent wetter. * Wind (20 ft) * Plains...............North winds 10 to 20 mph. * Chance of lightning...30 percent. * CWR...................25 percent. .Forecast days 3 through 7...... .MONDAY NIGHT...Partly cloudy. Isolated showers and thunderstorms. Lows 40 to 45. North winds 5 to 15 mph. .TUESDAY...Mostly clear. Lows 42 to 47. Highs 70 to 75. Northeast winds 5 to 15 mph. .WEDNESDAY...Partly cloudy. Lows 46 to 51. Highs 74 to 79. East winds 5 to 15 mph. .THURSDAY...Mostly cloudy. Scattered showers and thunderstorms. Lows 49 to 54. Highs 79 to 84. Southeast winds 5 to 10 mph. .FRIDAY...Mostly cloudy. Scattered showers and thunderstorms. Lows 49 to 54. Highs 82 to 87. .SATURDAY...Partly sunny. Numerous showers and scattered thunderstorms. Highs 70 to 75. $$ MTZ125-212230- Stillwater County- 233 AM MDT Sun Jun 21 2026 .Today... * Sky/weather...........Mostly sunny. * Max temperature.......74-79. * 24 hr trend.........3 degrees warmer. * Min humidity..........26-31 percent. * 24 hr trend.........15 percent drier. * Wind (20 ft) * Plains...............Northwest winds 5 to 15 mph. * Chance of lightning...13 percent. * CWR...................Zero. .TONIGHT... * Sky/weather...........Mostly cloudy. Scattered rain showers and isolated thunderstorms in the evening, then scattered rain showers overnight. * Min temperature.......48-53. * 24 hr trend.........4 degrees cooler. * Max humidity..........76-81 percent. * 24 hr trend.........18 percent drier. * Wind (20 ft) * Plains...............Southeast winds 5 to 10 mph in the evening shifting to the west overnight. * Chance of lightning...19 percent. * CWR...................15 percent. .MONDAY... * Sky/weather...........Partly sunny. Scattered rain showers in the morning, then rain showers and scattered thunderstorms in the afternoon. * Max temperature.......67-72. * 24 hr trend.........7 degrees cooler. * Min humidity..........50-55 percent. * 24 hr trend.........24 percent wetter. * Wind (20 ft) * Plains...............North winds 5 to 10 mph. * Chance of lightning...40 percent. * CWR...................50 percent. .Forecast days 3 through 7...... .MONDAY NIGHT...Mostly cloudy. Scattered showers and isolated thunderstorms. Lows 46 to 51. Northeast winds 5 to 10 mph. .TUESDAY...Partly cloudy. Lows 45 to 50. Highs 72 to 77. East winds 5 to 10 mph. .WEDNESDAY...Partly cloudy. Isolated showers and thunderstorms. Lows 49 to 54. Highs 75 to 80. East winds 5 to 10 mph. .THURSDAY...Mostly cloudy. Scattered showers and thunderstorms. Lows 51 to 56. Highs 80 to 85. Southeast winds 5 to 10 mph. .FRIDAY...Mostly cloudy. Scattered showers and isolated thunderstorms. Lows 53 to 58. Highs 86 to 91. .SATURDAY...Partly sunny. Numerous showers and scattered thunderstorms. Highs 74 to 79. $$ MTZ126-212230- Beartooth Ranger District Custer National Forest- 233 AM MDT Sun Jun 21 2026 .Today... * Sky/weather...........Mostly sunny. Scattered showers and thunderstorms in the afternoon. * Max temperature.......68-75 at 5000 feet...57-67 at 7000 feet. * 24 hr trend.........3 degrees cooler. * Min humidity..........27-36 percent at 5000 feet...34-44 percent at 7000 feet. * 24 hr trend.........10 percent wetter. * Wind (20 ft) * Slope/valley.........Northwest winds 5 to 15 mph. * Ridgetop.............North 5 to 15 mph. * Chance of lightning...25 percent. * CWR...................15 percent. .TONIGHT... * Sky/weather...........Mostly cloudy. Numerous rain showers and isolated thunderstorms in the evening, then scattered rain showers overnight. * Min temperature.......49-56 at 5000 feet...40-50 at 7000 feet. * 24 hr trend.........1 degree cooler. * Max humidity..........71-81 percent at 5000 feet...79-89 percent at 7000 feet. * 24 hr trend.........9 percent drier. * Wind (20 ft) * Slope/valley.........West winds 5 to 10 mph. * Ridgetop.............West 5 to 15 mph. * Chance of lightning...20 percent. * CWR...................20 percent. .MONDAY... * Sky/weather...........Mostly sunny with scattered rain showers in the morning, then cloudy with rain showers and scattered thunderstorms in the afternoon. * Max temperature.......63-71 at 5000 feet...54-64 at 7000 feet. * 24 hr trend.........3 degrees cooler. * Min humidity..........52-62 percent at 5000 feet...63-73 percent at 7000 feet. * 24 hr trend.........27 percent wetter. * Wind (20 ft) * Slope/valley.........North winds 5 to 15 mph. * Ridgetop.............North 10 to 20 mph. * Chance of lightning...40 percent. * CWR...................60 percent. .Forecast days 3 through 7...... .MONDAY NIGHT...Mostly cloudy. Scattered showers and isolated thunderstorms. Lows 47 to 52. Northwest winds 5 to 10 mph. .TUESDAY...Partly cloudy. Lows 46 to 52. Highs 66 to 74. North winds 5 to 15 mph. .WEDNESDAY...Partly cloudy. Scattered showers and thunderstorms. Lows 50 to 57. Highs 71 to 79. Northwest winds 5 to 10 mph. .THURSDAY...Mostly cloudy. Scattered showers and thunderstorms. Lows 52 to 61. Highs 75 to 83. West winds 5 to 15 mph. .FRIDAY...Partly cloudy. Scattered showers and isolated thunderstorms. Lows 54 to 60. Highs 81 to 89. .SATURDAY...Partly sunny. Numerous showers and scattered thunderstorms. Highs 70 to 78. $$ MTZ127-212230- Golden Valley County/Musselshell county- 233 AM MDT Sun Jun 21 2026 .Today... * Sky/weather...........Mostly sunny. * Max temperature.......69-74. * 24 hr trend.........2 degrees cooler. * Min humidity..........30-35 percent. * 24 hr trend.........4 percent drier. * Wind (20 ft) * Plains...............North winds 10 to 20 mph. * Chance of lightning...7 percent. * CWR...................Zero. .TONIGHT... * Sky/weather...........Mostly cloudy. Scattered showers and thunderstorms overnight. * Min temperature.......51-56. * 24 hr trend.........5 degrees cooler. * Max humidity..........78-83 percent. * 24 hr trend.........15 percent wetter. * Wind (20 ft) * Plains...............Northeast winds 5 to 15 mph. * Chance of lightning...29 percent. * CWR...................10 percent. .MONDAY... * Sky/weather...........Mostly cloudy. Rain showers and scattered thunderstorms in the morning, then numerous rain showers and scattered thunderstorms in the afternoon. * Max temperature.......63-68. * 24 hr trend.........6 degrees cooler. * Min humidity..........50-55 percent. * 24 hr trend.........20 percent wetter. * Wind (20 ft) * Plains...............North winds 10 to 20 mph. * Chance of lightning...35 percent. * CWR...................70 percent. .Forecast days 3 through 7...... .MONDAY NIGHT...Partly cloudy. Lows 48 to 53. North winds 5 to 15 mph. .TUESDAY...Mostly clear. Lows 49 to 54. Highs 67 to 72. North winds 5 to 15 mph. .WEDNESDAY...Partly cloudy. Lows 52 to 57. Highs 70 to 75. East winds 5 to 15 mph. .THURSDAY...Partly cloudy. Scattered showers and thunderstorms. Lows 56 to 61. Highs 77 to 82. Southeast winds 5 to 15 mph. .FRIDAY...Mostly cloudy. Scattered showers and thunderstorms. Lows 57 to 62. Highs 82 to 87. .SATURDAY...Partly sunny. Numerous showers and scattered thunderstorms. Highs 71 to 76. $$ MTZ128-212230- Yellowstone County- 233 AM MDT Sun Jun 21 2026 .Today... * Sky/weather...........Mostly sunny. * Max temperature.......76-81. * 24 hr trend.........1 degree warmer. * Min humidity..........25-30 percent. * 24 hr trend.........9 percent drier. * Wind (20 ft) * Plains...............North winds 5 to 15 mph. * Chance of lightning...5 percent. * CWR...................Zero. .TONIGHT... * Sky/weather...........Mostly cloudy. Scattered showers and thunderstorms overnight. * Min temperature.......53-58. * 24 hr trend.........3 degrees cooler. * Max humidity..........77-82 percent. * 24 hr trend.........8 percent drier. * Wind (20 ft) * Plains...............Northeast winds 5 to 15 mph. * Chance of lightning...25 percent. * CWR...................10 percent. .MONDAY... * Sky/weather...........Mostly cloudy. Numerous rain showers and isolated thunderstorms in the morning, then numerous rain showers and scattered thunderstorms in the afternoon. * Max temperature.......69-74. * 24 hr trend.........7 degrees cooler. * Min humidity..........46-51 percent. * 24 hr trend.........21 percent wetter. * Wind (20 ft) * Plains...............Northeast winds 5 to 15 mph. * Chance of lightning...30 percent. * CWR...................40 percent. .Forecast days 3 through 7...... .MONDAY NIGHT...Partly cloudy. Isolated showers and thunderstorms. Lows 49 to 54. North winds 5 to 15 mph. .TUESDAY...Partly cloudy. Lows 49 to 54. Highs 74 to 79. Northeast winds 5 to 15 mph. .WEDNESDAY...Partly cloudy. Lows 53 to 58. Highs 78 to 83. East winds 5 to 15 mph. .THURSDAY...Partly cloudy. Isolated showers and thunderstorms. Lows 55 to 60. Highs 83 to 88. East winds 5 to 10 mph. .FRIDAY...Mostly cloudy. Scattered showers and thunderstorms. Lows 57 to 62. Highs 89 to 94. .SATURDAY...Partly sunny. Numerous showers and scattered thunderstorms. Highs 77 to 82. $$ MTZ129-212230- Crow Indian Reservation/Bighorn Canyon Rec Area- 233 AM MDT Sun Jun 21 2026 .Today... * Sky/weather...........Mostly cloudy with scattered rain showers and isolated thunderstorms in the morning, then partly cloudy with scattered showers and thunderstorms in the afternoon. * Max temperature.......65-75 at 5000 feet...58-65 at 7000 feet. * 24 hr trend.........2 degrees cooler. * Min humidity..........33-43 percent at 5000 feet...40-50 percent at 7000 feet. * 24 hr trend.........4 percent drier. * Wind (20 ft) * Slope/valley.........Northwest winds 5 to 15 mph. * Ridgetop.............Northwest 10 to 20 mph. * Chance of lightning...30 percent. * CWR...................25 percent. .TONIGHT... * Sky/weather...........Mostly cloudy. Scattered rain showers and isolated thunderstorms overnight. * Min temperature.......49-55 at 5000 feet...46-51 at 7000 feet. * 24 hr trend.........1 degree cooler. * Max humidity..........77-87 percent at 5000 feet...80-90 percent at 7000 feet. * 24 hr trend.........7 percent wetter. * Wind (20 ft) * Slope/valley.........Southeast winds 5 to 15 mph. * Ridgetop.............Southeast 5 to 15 mph. * Chance of lightning...18 percent. * CWR...................30 percent. .MONDAY... * Sky/weather...........Mostly cloudy. Rain showers and isolated thunderstorms in the morning, then rain showers and scattered thunderstorms in the afternoon. * Max temperature.......60-70 at 5000 feet...54-60 at 7000 feet. * 24 hr trend.........5 degrees cooler. * Min humidity..........59-69 percent at 5000 feet...74-84 percent at 7000 feet. * 24 hr trend.........25 percent wetter. * Wind (20 ft) * Slope/valley.........East winds 5 to 10 mph in the morning shifting to the north 5 to 15 mph in the afternoon. * Ridgetop.............North 10 to 20 mph. * Chance of lightning...35 percent. * CWR...................90 percent. .Forecast days 3 through 7...... .MONDAY NIGHT...Partly cloudy. Scattered showers and thunderstorms. Lows 45 to 51. Northwest winds 5 to 10 mph. .TUESDAY...Partly cloudy. Lows 46 to 52. Highs 64 to 74. North winds 5 to 15 mph. .WEDNESDAY...Partly cloudy. Lows 49 to 56. Highs 68 to 78. East winds 5 to 15 mph. .THURSDAY...Partly cloudy. Isolated showers and thunderstorms. Lows 53 to 60. Highs 73 to 83. Southeast winds 5 to 15 mph. .FRIDAY...Mostly cloudy. Scattered showers and thunderstorms. Lows 54 to 60. Highs 78 to 88. .SATURDAY...Partly sunny. Numerous showers and scattered thunderstorms. Highs 68 to 78. $$ MTZ130-212230- Northern Rosebud/Northern Treasure Counties- 233 AM MDT Sun Jun 21 2026 .Today... * Sky/weather...........Partly sunny. Scattered rain showers and isolated thunderstorms in the morning, then scattered showers and thunderstorms in the afternoon. * Max temperature.......74-79. * 24 hr trend.........4 degrees cooler. * Min humidity..........40-45 percent. * 24 hr trend.........5 percent wetter. * Wind (20 ft) * Plains...............Northeast winds 5 to 15 mph. * Chance of lightning...30 percent. * CWR...................25 percent. .TONIGHT... * Sky/weather...........Mostly clear in the evening, then mostly cloudy with scattered rain showers and isolated thunderstorms overnight. * Min temperature.......50-55. * 24 hr trend.........3 degrees cooler. * Max humidity..........94-99 percent. * 24 hr trend.........3 percent drier. * Wind (20 ft) * Plains...............East winds 5 to 10 mph. * Chance of lightning...17 percent. * CWR...................10 percent. .MONDAY... * Sky/weather...........Mostly cloudy. Rain showers and isolated thunderstorms in the morning, then rain showers and scattered thunderstorms in the afternoon. * Max temperature.......68-73. * 24 hr trend.........6 degrees cooler. * Min humidity..........55-60 percent. * 24 hr trend.........15 percent wetter. * Wind (20 ft) * Plains...............North winds 5 to 10 mph. * Chance of lightning...35 percent. * CWR...................80 percent. .Forecast days 3 through 7...... .MONDAY NIGHT...Partly cloudy. Lows 47 to 52. Northwest winds 5 to 10 mph. .TUESDAY...Mostly clear. Lows 46 to 51. Highs 70 to 75. North winds 5 to 10 mph. .WEDNESDAY...Partly cloudy. Lows 49 to 54. Highs 73 to 78. East winds 5 to 10 mph. .THURSDAY...Partly cloudy. Scattered showers and thunderstorms. Lows 53 to 58. Highs 80 to 85. East winds 5 to 15 mph. .FRIDAY...Mostly cloudy. Scattered showers and thunderstorms. Lows 56 to 61. Highs 86 to 91. .SATURDAY...Partly sunny. Scattered showers and isolated thunderstorms. Highs 77 to 82. $$ MTZ131-212230- Northern Cheyenne Indian Reservation/Ashland Ranger District Custer Natl Forest- 233 AM MDT Sun Jun 21 2026 .Today... * Sky/weather...........Mostly cloudy. Scattered rain showers and isolated thunderstorms in the morning, then numerous rain showers and scattered thunderstorms in the afternoon. * Max temperature.......71-76. * 24 hr trend.........8 degrees cooler. * Min humidity..........47-52 percent. * 24 hr trend.........12 percent wetter. * Wind (20 ft) * Slope/valley.........North winds 5 to 15 mph. * Ridgetop.............North 10 to 20 mph. * Chance of lightning...35 percent. * CWR...................60 percent. .TONIGHT... * Sky/weather...........Mostly clear in the evening, then mostly cloudy with scattered rain showers and isolated thunderstorms overnight. * Min temperature.......49-54. * 24 hr trend.........3 degrees cooler. * Max humidity..........89-94 percent. * 24 hr trend.........1 percent drier. * Wind (20 ft) * Slope/valley.........South winds 5 to 10 mph. * Ridgetop.............South 5 to 10 mph. * Chance of lightning...17 percent. * CWR...................10 percent. .MONDAY... * Sky/weather...........Cloudy. Rain showers and isolated thunderstorms in the morning, then rain showers and scattered thunderstorms in the afternoon. * Max temperature.......69-74. * 24 hr trend.........2 degrees cooler. * Min humidity..........59-64 percent. * 24 hr trend.........12 percent wetter. * Wind (20 ft) * Slope/valley.........Southeast winds 5 to 10 mph in the morning shifting to the northeast 5 to 15 mph in the afternoon. * Ridgetop.............North 5 to 15 mph. * Chance of lightning...40 percent. * CWR...................80 percent. .Forecast days 3 through 7...... .MONDAY NIGHT...Mostly cloudy. Scattered showers and thunderstorms. Lows 46 to 51. Northwest winds 5 to 15 mph. .TUESDAY...Mostly clear. Lows 44 to 49. Highs 71 to 76. North winds 5 to 15 mph. .WEDNESDAY...Partly cloudy. Lows 49 to 54. Highs 73 to 78. East winds 5 to 10 mph. .THURSDAY...Partly cloudy. Scattered showers and thunderstorms. Lows 53 to 58. Highs 79 to 84. Southeast winds 5 to 15 mph. .FRIDAY...Mostly cloudy. Scattered showers and thunderstorms. Lows 57 to 62. Highs 87 to 92. .SATURDAY...Partly sunny. Scattered showers and thunderstorms. Highs 78 to 83. $$ MTZ132-212230- Custer County- 233 AM MDT Sun Jun 21 2026 .Today... * Sky/weather...........Mostly cloudy. Rain showers and isolated thunderstorms. * Max temperature.......65-70. * 24 hr trend.........9 degrees cooler. * Min humidity..........66-71 percent. * 24 hr trend.........28 percent wetter. * Wind (20 ft) * Plains...............Southeast winds 10 to 20 mph. * Chance of lightning...22 percent. * CWR...................70 percent. .TONIGHT... * Sky/weather...........Partly cloudy. Isolated rain showers in the evening. * Min temperature.......48-53. * 24 hr trend.........4 degrees cooler. * Max humidity..........95-100 percent. * 24 hr trend.........Unchanged. * Wind (20 ft) * Plains...............South winds 5 to 15 mph. * Chance of lightning...12 percent. * CWR...................Less than 10 percent. .MONDAY... * Sky/weather...........Mostly cloudy. Scattered rain showers in the morning, then rain showers and scattered thunderstorms in the afternoon. * Max temperature.......66-71. * 24 hr trend.........1 degree warmer. * Min humidity..........66-71 percent. * 24 hr trend.........Unchanged. * Wind (20 ft) * Plains...............South winds 5 to 10 mph in the morning shifting to the north 5 to 15 mph in the afternoon. * Chance of lightning...40 percent. * CWR...................60 percent. .Forecast days 3 through 7...... .MONDAY NIGHT...Partly cloudy. Scattered showers and isolated thunderstorms. Lows 46 to 51. Northwest winds 5 to 10 mph. .TUESDAY...Mostly clear. Lows 45 to 50. Highs 66 to 71. Northwest winds 5 to 15 mph. .WEDNESDAY...Mostly clear. Lows 47 to 52. Highs 69 to 74. Northeast winds 5 to 10 mph. .THURSDAY...Partly cloudy. Scattered showers and thunderstorms. Lows 53 to 58. Highs 75 to 80. Southeast winds 5 to 15 mph. .FRIDAY...Mostly cloudy. Scattered showers and thunderstorms. Lows 56 to 61. Highs 80 to 85. .SATURDAY...Partly sunny. Scattered showers and thunderstorms. Highs 75 to 80. $$ MTZ133-212230- Sioux Ranger District Custer National Forest- 233 AM MDT Sun Jun 21 2026 .Today... * Sky/weather...........Mostly cloudy. Rain showers and isolated thunderstorms. * Max temperature.......60-65. * 24 hr trend.........13 degrees cooler. * Min humidity..........87-92 percent. * 24 hr trend.........48 percent wetter. * Wind (20 ft) * Plains...............East winds 10 to 20 mph. * Chance of lightning...20 percent. * CWR...................80 percent. .TONIGHT... * Sky/weather...........Mostly cloudy. Isolated rain showers in the evening. * Min temperature.......46-51. * 24 hr trend.........4 degrees cooler. * Max humidity..........100 percent. * 24 hr trend.........Unchanged. * Wind (20 ft) * Plains...............South winds 5 to 15 mph. * Chance of lightning...10 percent. * CWR...................10 percent. .MONDAY... * Sky/weather...........Mostly cloudy. Scattered rain showers in the morning, rain showers and scattered thunderstorms in the afternoon. * Max temperature.......67-72. * 24 hr trend.........7 degrees warmer. * Min humidity..........71-76 percent. * 24 hr trend.........16 percent drier. * Wind (20 ft) * Plains...............Southeast winds 5 to 15 mph. * Chance of lightning...30 percent. * CWR...................40 percent. .Forecast days 3 through 7...... .MONDAY NIGHT...Mostly cloudy. Numerous showers and scattered thunderstorms. Lows 46 to 51. Northwest winds 5 to 15 mph. .TUESDAY...Mostly clear. Lows 43 to 48. Highs 67 to 72. Northwest winds 10 to 20 mph with gusts to around 30 mph. .WEDNESDAY...Partly cloudy. Lows 46 to 51. Highs 69 to 74. Northeast winds 5 to 10 mph. .THURSDAY...Mostly cloudy. Scattered showers and thunderstorms. Lows 51 to 56. Highs 72 to 77. Southeast winds 5 to 15 mph with gusts to around 30 mph. .FRIDAY...Mostly cloudy. Scattered showers and thunderstorms. Lows 55 to 60. Highs 78 to 83. .SATURDAY...Partly sunny. Scattered showers and thunderstorms. Highs 78 to 83. $$ WYZ274-212230- Sheridan County- 233 AM MDT Sun Jun 21 2026 .Today... * Sky/weather...........Cloudy with rain showers and isolated thunderstorms in the morning, then partly sunny with rain showers and scattered thunderstorms in the afternoon. * Max temperature.......73-78. * 24 hr trend.........1 degree cooler. * Min humidity..........41-46 percent. * 24 hr trend.........6 percent drier. * Wind (20 ft) * Slope/valley.........Northwest winds 10 to 20 mph with gusts to around 30 mph. * Ridgetop.............North 10 to 20 mph. * Chance of lightning...30 percent. * CWR...................20 percent. .TONIGHT... * Sky/weather...........Partly cloudy with scattered rain showers and isolated thunderstorms. * Min temperature.......46-51. * 24 hr trend.........2 degrees cooler. * Max humidity..........100 percent. * 24 hr trend.........2 percent wetter. * Wind (20 ft) * Slope/valley.........East winds 5 to 10 mph in the evening becoming light overnight. * Ridgetop.............South 5 to 10 mph. * Chance of lightning...24 percent. * CWR...................10 percent. .MONDAY... * Sky/weather...........Mostly cloudy. Rain showers and isolated thunderstorms in the morning, then rain showers and scattered thunderstorms in the afternoon. * Max temperature.......69-74. * 24 hr trend.........4 degrees cooler. * Min humidity..........61-66 percent. * 24 hr trend.........20 percent wetter. * Wind (20 ft) * Slope/valley.........Southeast winds 5 to 10 mph in the morning shifting to the north 5 to 15 mph in the afternoon. * Ridgetop.............Northwest 10 to 20 mph. * Chance of lightning...40 percent. * CWR...................70 percent. .Forecast days 3 through 7...... .MONDAY NIGHT...Mostly cloudy. Numerous showers and scattered thunderstorms. Lows 43 to 48. Northwest winds 5 to 10 mph. .TUESDAY...Partly cloudy. Isolated showers. Lows 42 to 47. Highs 69 to 74. North winds 5 to 10 mph. .WEDNESDAY...Mostly cloudy. Scattered showers and thunderstorms. Lows 45 to 50. Highs 73 to 78. East winds 5 to 10 mph. .THURSDAY...Mostly cloudy. Scattered showers and thunderstorms. Lows 48 to 53. Highs 78 to 83. Southeast winds 5 to 10 mph. .FRIDAY...Mostly cloudy. Scattered showers and thunderstorms. Lows 52 to 57. Highs 86 to 91. .SATURDAY...Partly sunny. Numerous showers and scattered thunderstorms. Highs 76 to 81. $$ WYZ284-212230- Bighorn National Forest- 233 AM MDT Sun Jun 21 2026 .Today... * Sky/weather...........Mostly cloudy. Rain showers and isolated thunderstorms in the morning, then scattered showers and thunderstorms in the afternoon. * Max temperature.......56-61. * 24 hr trend.........9 degrees cooler. * Min humidity..........55-60 percent. * 24 hr trend.........21 percent wetter. * Wind (20 ft) * At Burgess Jct.......Northwest winds 10 to 20 mph. Gusts up to 30 mph in the morning. * Chance of lightning...35 percent. * CWR...................30 percent. .TONIGHT... * Sky/weather...........Mostly cloudy with scattered rain showers and isolated thunderstorms. * Min temperature.......37-42. * 24 hr trend.........1 degree cooler. * Max humidity..........100 percent. * 24 hr trend.........Unchanged. * Wind (20 ft) * At Burgess Jct.......East winds 5 to 15 mph in the evening shifting to the southwest 5 to 10 mph overnight. * Chance of lightning...24 percent. * CWR...................15 percent. .MONDAY... * Sky/weather...........Mostly cloudy. Rain showers and isolated thunderstorms in the morning, then rain showers and scattered thunderstorms in the afternoon. * Max temperature.......56-61. * 24 hr trend.........Unchanged. * Min humidity..........69-74 percent. * 24 hr trend.........14 percent wetter. * Wind (20 ft) * At Burgess Jct.......Southwest winds 5 to 10 mph in the morning shifting to the north 10 to 20 mph in the afternoon. * Chance of lightning...40 percent. * CWR...................70 percent. .Forecast days 3 through 7...... .MONDAY NIGHT...Mostly cloudy. Numerous showers and scattered thunderstorms. Lows 34 to 39. Northwest winds 5 to 10 mph. .TUESDAY...Partly cloudy. Scattered showers. Lows 34 to 39. Highs 55 to 60. Northwest winds 5 to 15 mph. .WEDNESDAY...Mostly cloudy. Scattered showers and thunderstorms. Lows 37 to 42. Highs 59 to 64. Southwest winds 5 to 15 mph. .THURSDAY...Mostly cloudy. Scattered showers and thunderstorms. Lows 42 to 47. Highs 64 to 69. Southwest winds 5 to 15 mph. .FRIDAY...Partly cloudy. Scattered showers and thunderstorms. Lows 43 to 48. Highs 71 to 76. .SATURDAY...Partly sunny. Numerous showers and scattered thunderstorms. Highs 62 to 67. $$ weather.gov/billings