Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS Billings, MT
Issued by NWS Billings, MT
258 FNUS55 KBYZ 150834 FWFBYZ Fire Weather Planning Forecast for SCen and SErn Montana National Weather Service Billings MT 234 AM MDT Sun Jun 15 2025 .DISCUSSION... Unsettled conditions will persist through midweek as disturbances move through the region bringing periods of showers and thunderstorms, mainly during the afternoons and evenings. Some of the thunderstorms could be strong to severe producing strong wind gusts, hail and heavy rainfall. Temperatures over the lower elevations will range from the 70s to 80s, approaching 90 on Thursday. Afternoon RH will range from 30-50 percent through the first part of the week, decreasing to 20-40% for the second half of the week. Archer MTZ123-152230- Gallatin National Forest- 234 AM MDT Sun Jun 15 2025 .Today... * Sky/weather...........Partly sunny. Numerous rain showers and scattered thunderstorms in the afternoon. Some thunderstorms may be severe. * Max temperature.......77-87 at 5000 feet...66-76 at 7000 feet. * 24 hr trend.........Unchanged. * Min humidity..........28-38 percent at 5000 feet...32-42 percent at 7000 feet. * 24 hr trend.........5 percent wetter. * Wind (20 ft) * Slope/valley.........Light winds in the morning becoming north 5 to 10 mph in the afternoon. * Ridgetop.............South 5 to 10 mph. * Chance of lightning...45 percent. * CWR...................30 percent. .TONIGHT... * Sky/weather...........Partly cloudy. Scattered showers and thunderstorms in the evening. Some thunderstorms may be severe. * Min temperature.......45-55 at 5000 feet...42-52 at 7000 feet. * 24 hr trend.........1 degree cooler. * Max humidity..........81-91 percent at 5000 feet...74-84 percent at 7000 feet. * 24 hr trend.........25 percent wetter. * Wind (20 ft) * Slope/valley.........North winds 5 to 10 mph in the evening becoming light overnight. * Ridgetop.............West 5 to 15 mph. * Chance of lightning...28 percent. * CWR...................15 percent. .MONDAY... * Sky/weather...........Mostly sunny in the morning, then mostly cloudy with numerous rain showers and scattered thunderstorms in the afternoon. * Max temperature.......71-81 at 5000 feet...60-70 at 7000 feet. * 24 hr trend.........5 degrees cooler. * Min humidity..........35-45 percent at 5000 feet...37-47 percent at 7000 feet. * 24 hr trend.........3 percent wetter. * Wind (20 ft) * Slope/valley.........Light winds in the morning becoming northwest 5 to 10 mph in the afternoon. * Ridgetop.............Southwest 5 to 10 mph. * Chance of lightning...49 percent. * CWR...................50 percent. .Forecast days 3 through 7...... .MONDAY NIGHT...Mostly cloudy. Scattered showers and thunderstorms. Lows 45 to 54. West winds 5 to 10 mph. .TUESDAY...Partly cloudy. Scattered showers and thunderstorms. Lows 43 to 53. Highs 67 to 77. West winds 5 to 10 mph. .WEDNESDAY...Mostly clear. Lows 46 to 56. Highs 74 to 84. Southwest winds 5 to 10 mph. .THURSDAY...Partly cloudy. Isolated showers and thunderstorms. Lows 47 to 57. Highs 80 to 90. Southwest winds 5 to 10 mph. .FRIDAY...Partly cloudy. Isolated showers and thunderstorms. Lows 43 to 53. Highs 74 to 84. .SATURDAY...Mostly sunny. Scattered showers and thunderstorms. Highs 66 to 76. $$ MTZ124-152230- Wheatland County/Sweet Grass County- 234 AM MDT Sun Jun 15 2025 .Today... * Sky/weather...........Partly sunny. Rain showers with thunderstorms likely in the afternoon. Some thunderstorms may be severe. * Max temperature.......75-80. * 24 hr trend.........4 degrees warmer. * Min humidity..........48-53 percent. * 24 hr trend.........1 percent drier. * Wind (20 ft) * Plains...............North winds 5 to 10 mph in the morning shifting to the east 5 to 15 mph in the afternoon. * Chance of lightning...57 percent. * CWR...................50 percent. .TONIGHT... * Sky/weather...........Mostly cloudy. Rain showers and scattered thunderstorms in the evening, then isolated rain showers overnight. Patchy fog overnight. Some thunderstorms may be severe. * Min temperature.......48-53. * 24 hr trend.........3 degrees cooler. * Max humidity..........91-96 percent. * 24 hr trend.........3 percent drier. * 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...50 percent. * CWR...................70 percent. .MONDAY... * Sky/weather...........Mostly sunny with isolated rain showers in the morning, then mostly cloudy with numerous rain showers and scattered thunderstorms in the afternoon. * Max temperature.......71-76. * 24 hr trend.........4 degrees cooler. * Min humidity..........47-52 percent. * 24 hr trend.........1 percent drier. * Wind (20 ft) * Plains...............North winds 5 to 10 mph in the morning shifting to the east 5 to 15 mph in the afternoon. * Chance of lightning...39 percent. * CWR...................50 percent. .Forecast days 3 through 7...... .MONDAY NIGHT...Mostly cloudy. Scattered showers and thunderstorms. Lows 48 to 53. Northwest winds 5 to 15 mph. .TUESDAY...Partly cloudy. Numerous showers and scattered thunderstorms. Lows 45 to 50. Highs 69 to 74. West winds 5 to 15 mph. .WEDNESDAY...Mostly clear. Lows 48 to 53. Highs 76 to 81. West winds 5 to 15 mph. .THURSDAY...Partly cloudy. Scattered showers and thunderstorms. Lows 49 to 54. Highs 80 to 85. Northwest winds 5 to 15 mph. .FRIDAY...Mostly cloudy. Scattered showers and thunderstorms. Lows 46 to 51. Highs 75 to 80. .SATURDAY...Partly sunny. Scattered showers and isolated thunderstorms. Highs 65 to 70. $$ MTZ125-152230- Stillwater County- 234 AM MDT Sun Jun 15 2025 .Today... * Sky/weather...........Partly sunny. Numerous rain showers and scattered thunderstorms in the afternoon. Some thunderstorms may be severe. * Max temperature.......76-81. * 24 hr trend.........10 degrees warmer. * Min humidity..........46-51 percent. * 24 hr trend.........20 percent drier. * Wind (20 ft) * Plains...............Northeast winds 5 to 10 mph. * Chance of lightning...53 percent. * CWR...................15 percent. .TONIGHT... * Sky/weather...........Mostly cloudy. Numerous rain showers and scattered thunderstorms in the evening. Some thunderstorms may be severe. * Min temperature.......50-55. * 24 hr trend.........1 degree cooler. * Max humidity..........83-88 percent. * 24 hr trend.........9 percent wetter. * Wind (20 ft) * Plains...............North winds 5 to 10 mph in the evening shifting to the southwest overnight. * Chance of lightning...46 percent. * CWR...................40 percent. .MONDAY... * Sky/weather...........Mostly sunny with isolated rain showers in the morning, then mostly cloudy with numerous rain showers and scattered thunderstorms in the afternoon. * Max temperature.......73-78. * 24 hr trend.........3 degrees cooler. * Min humidity..........46-51 percent. * 24 hr trend.........Unchanged. * Wind (20 ft) * Plains...............Northeast winds 5 to 10 mph. * Chance of lightning...40 percent. * CWR...................40 percent. .Forecast days 3 through 7...... .MONDAY NIGHT...Mostly cloudy. Numerous showers and scattered thunderstorms. Lows 49 to 54. West winds 5 to 10 mph. .TUESDAY...Partly cloudy. Numerous showers and scattered thunderstorms. Lows 47 to 52. Highs 70 to 75. West winds 5 to 10 mph. .WEDNESDAY...Mostly clear. Lows 51 to 56. Highs 77 to 82. South winds 5 to 10 mph. .THURSDAY...Partly cloudy. Isolated showers and thunderstorms. Lows 53 to 58. Highs 83 to 88. South winds 5 to 10 mph. .FRIDAY...Partly cloudy. Isolated showers and thunderstorms. Lows 50 to 55. Highs 80 to 85. .SATURDAY...Mostly sunny. Isolated showers and thunderstorms. Highs 72 to 77. $$ MTZ126-152230- Beartooth Ranger District Custer National Forest- 234 AM MDT Sun Jun 15 2025 .Today... * Sky/weather...........Partly sunny. Numerous rain showers and scattered thunderstorms in the afternoon. Some thunderstorms may be severe. * Max temperature.......75-84 at 5000 feet...67-77 at 7000 feet. * 24 hr trend.........2 degrees cooler. * Min humidity..........45-50 percent. * 24 hr trend.........20 percent wetter. * Wind (20 ft) * Slope/valley.........Southwest winds 5 to 10 mph in the morning shifting to the northeast 5 to 15 mph in the afternoon. * Ridgetop.............South 5 to 15 mph. * Chance of lightning...48 percent. * CWR...................20 percent. .TONIGHT... * Sky/weather...........Mostly cloudy. Scattered showers and thunderstorms in the evening. Some thunderstorms may be severe. * Min temperature.......52-57 at 5000 feet...44-54 at 7000 feet. * 24 hr trend.........4 degrees cooler. * Max humidity..........74-84 percent at 5000 feet...72-82 percent at 7000 feet. * 24 hr trend.........29 percent wetter. * Wind (20 ft) * Slope/valley.........Northwest winds 5 to 15 mph. * Ridgetop.............West 10 to 20 mph. * Chance of lightning...36 percent. * CWR...................10 percent. .MONDAY... * Sky/weather...........Mostly sunny with isolated rain showers in the morning, then mostly cloudy with numerous rain showers and scattered thunderstorms in the afternoon. * Max temperature.......70-78 at 5000 feet...62-72 at 7000 feet. * 24 hr trend.........5 degrees cooler. * Min humidity..........48-53 percent. * 24 hr trend.........3 percent wetter. * Wind (20 ft) * Slope/valley.........Northeast winds 5 to 15 mph. * Ridgetop.............Southwest 5 to 10 mph. * Chance of lightning...39 percent. * CWR...................10 percent. .Forecast days 3 through 7...... .MONDAY NIGHT...Mostly cloudy. Numerous showers and scattered thunderstorms. Lows 50 to 55. Northwest winds 5 to 10 mph. .TUESDAY...Mostly cloudy. Showers and scattered thunderstorms. Lows 49 to 54. Highs 65 to 72. West winds 5 to 15 mph. .WEDNESDAY...Mostly clear. Lows 52 to 59. Highs 72 to 81. West winds 5 to 15 mph. .THURSDAY...Partly cloudy. Isolated showers and thunderstorms. Lows 53 to 61. Highs 81 to 90. Southwest winds 5 to 15 mph. .FRIDAY...Partly cloudy. Isolated showers and thunderstorms. Lows 52 to 58. Highs 80 to 87. .SATURDAY...Mostly sunny. Isolated showers and thunderstorms. Highs 71 to 79. $$ MTZ127-152230- Golden Valley County/Musselshell county- 234 AM MDT Sun Jun 15 2025 .Today... * Sky/weather...........Mostly sunny. Scattered showers and thunderstorms in the afternoon. Some thunderstorms may be severe. * Max temperature.......75-80. * 24 hr trend.........6 degrees warmer. * Min humidity..........51-56 percent. * 24 hr trend.........10 percent drier. * Wind (20 ft) * Plains...............Northeast winds 5 to 10 mph. * Chance of lightning...36 percent. * CWR...................10 percent. .TONIGHT... * Sky/weather...........Mostly cloudy. Rain showers with thunderstorms likely in the evening, then isolated rain showers overnight. Some thunderstorms may be severe. * Min temperature.......54-59. * 24 hr trend.........3 degrees cooler. * Max humidity..........86-91 percent. * 24 hr trend.........1 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...59 percent. * CWR...................60 percent. .MONDAY... * Sky/weather...........Partly sunny. Isolated rain showers in the morning, then scattered showers and thunderstorms in the afternoon. * Max temperature.......71-76. * 24 hr trend.........4 degrees cooler. * Min humidity..........49-54 percent. * 24 hr trend.........2 percent drier. * Wind (20 ft) * Plains...............Northwest winds 5 to 10 mph in the morning shifting to the east in the afternoon. * Chance of lightning...25 percent. * CWR...................30 percent. .Forecast days 3 through 7...... .MONDAY NIGHT...Mostly cloudy. Scattered showers and thunderstorms. Lows 53 to 58. North winds 5 to 10 mph. .TUESDAY...Mostly cloudy. Numerous showers and scattered thunderstorms. Lows 52 to 57. Highs 66 to 71. Northwest winds 5 to 10 mph. .WEDNESDAY...Mostly clear. Lows 56 to 61. Highs 76 to 81. Southwest winds 5 to 10 mph. .THURSDAY...Partly cloudy. Isolated showers and thunderstorms. Lows 57 to 62. Highs 79 to 84. North winds 5 to 15 mph. .FRIDAY...Partly cloudy. Scattered showers and thunderstorms. Lows 54 to 59. Highs 78 to 83. .SATURDAY...Mostly sunny. Isolated showers and thunderstorms. Highs 68 to 73. $$ MTZ128-152230- Yellowstone County- 234 AM MDT Sun Jun 15 2025 .Today... * Sky/weather...........Partly sunny. Scattered showers and thunderstorms in the afternoon. Some thunderstorms may be severe. * Max temperature.......81-86. * 24 hr trend.........10 degrees warmer. * Min humidity..........44-49 percent. * 24 hr trend.........15 percent drier. * Wind (20 ft) * Plains...............Northeast winds 5 to 10 mph. * Chance of lightning...44 percent. * CWR...................10 percent. .TONIGHT... * Sky/weather...........Mostly cloudy. Numerous showers and thunderstorms likely in the evening. Some thunderstorms may be severe. * Min temperature.......54-59. * 24 hr trend.........3 degrees cooler. * Max humidity..........87-92 percent. * 24 hr trend.........5 percent drier. * Wind (20 ft) * Plains...............North winds 5 to 15 mph. * Chance of lightning...55 percent. * CWR...................40 percent. .MONDAY... * Sky/weather...........Partly sunny. Scattered showers and thunderstorms in the afternoon. * Max temperature.......77-82. * 24 hr trend.........4 degrees cooler. * Min humidity..........43-48 percent. * 24 hr trend.........1 percent drier. * Wind (20 ft) * Plains...............Southwest winds 5 to 10 mph in the morning shifting to the east in the afternoon. * Chance of lightning...29 percent. * CWR...................15 percent. .Forecast days 3 through 7...... .MONDAY NIGHT...Mostly cloudy. Scattered showers and thunderstorms. Lows 53 to 58. North winds 5 to 10 mph. .TUESDAY...Mostly cloudy. Numerous showers and scattered thunderstorms. Lows 52 to 57. Highs 72 to 77. West winds 5 to 10 mph. .WEDNESDAY...Mostly clear. Lows 55 to 60. Highs 82 to 87. Southwest winds 5 to 10 mph. .THURSDAY...Partly cloudy. Lows 56 to 61. Highs 86 to 91. Northeast winds 5 to 15 mph. .FRIDAY...Partly cloudy. Isolated showers and thunderstorms. Lows 54 to 59. Highs 84 to 89. .SATURDAY...Mostly sunny. Highs 74 to 79. $$ MTZ129-152230- Crow Indian Reservation/Bighorn Canyon Rec Area- 234 AM MDT Sun Jun 15 2025 .Today... * Sky/weather...........Mostly sunny. Scattered showers and thunderstorms in the afternoon. Some thunderstorms may be severe. * Max temperature.......74-84 at 5000 feet...68-74 at 7000 feet. * 24 hr trend.........6 degrees warmer. * Min humidity..........37-47 percent at 5000 feet...45-55 percent at 7000 feet. * 24 hr trend.........22 percent drier. * Wind (20 ft) * Slope/valley.........Northwest winds 5 to 10 mph in the morning shifting to the east 5 to 15 mph in the afternoon. * Ridgetop.............Southwest 5 to 15 mph. * Chance of lightning...38 percent. * CWR...................10 percent. .TONIGHT... * Sky/weather...........Mostly cloudy. Numerous rain showers and scattered thunderstorms in the evening, then isolated rain showers overnight. Some thunderstorms may be severe. * Min temperature.......52-57 at 5000 feet...48-53 at 7000 feet. * 24 hr trend.........3 degrees cooler. * Max humidity..........93-98 percent. * 24 hr trend.........20 percent wetter. * Wind (20 ft) * Slope/valley.........East winds 5 to 15 mph in the evening shifting to the northwest overnight. * Ridgetop.............Southwest 5 to 15 mph. * Chance of lightning...45 percent. * CWR...................30 percent. .MONDAY... * Sky/weather...........Partly sunny. Scattered showers and thunderstorms in the afternoon. * Max temperature.......67-77 at 5000 feet...61-67 at 7000 feet. * 24 hr trend.........8 degrees cooler. * Min humidity..........46-56 percent at 5000 feet...59-69 percent at 7000 feet. * 24 hr trend.........9 percent wetter. * Wind (20 ft) * Slope/valley.........North winds 5 to 15 mph. * Ridgetop.............West 5 to 15 mph. * Chance of lightning...28 percent. * CWR...................10 percent. .Forecast days 3 through 7...... .MONDAY NIGHT...Mostly cloudy. Numerous showers and scattered thunderstorms. Lows 50 to 55. South winds 5 to 10 mph. .TUESDAY...Mostly cloudy. Showers and scattered thunderstorms. Lows 49 to 54. Highs 62 to 72. West winds 5 to 15 mph. .WEDNESDAY...Mostly clear. Lows 54 to 60. Highs 72 to 82. South winds 5 to 15 mph. .THURSDAY...Partly cloudy. Lows 55 to 63. Highs 79 to 89. Southeast winds 5 to 15 mph. .FRIDAY...Mostly clear. Isolated showers and thunderstorms. Lows 52 to 58. Highs 77 to 87. .SATURDAY...Mostly sunny. Highs 68 to 78. $$ MTZ130-152230- Northern Rosebud/Northern Treasure Counties- 234 AM MDT Sun Jun 15 2025 .Today... * Sky/weather...........Mostly sunny. Scattered showers and thunderstorms in the afternoon. Some thunderstorms may be severe. * Max temperature.......83-88. * 24 hr trend.........10 degrees warmer. * Min humidity..........40-45 percent. * 24 hr trend.........13 percent drier. * Wind (20 ft) * Plains...............East winds 5 to 10 mph. * Chance of lightning...30 percent. * CWR...................10 percent. .TONIGHT... * Sky/weather...........Mostly cloudy. Rain showers with thunderstorms likely in the evening, then scattered rain showers overnight. Some thunderstorms may be severe. * Min temperature.......56-61. * 24 hr trend.........3 degrees cooler. * Max humidity..........92-97 percent. * 24 hr trend.........Unchanged. * Wind (20 ft) * Plains...............North winds 5 to 10 mph. * Chance of lightning...59 percent. * CWR...................90 percent. .MONDAY... * Sky/weather...........Mostly sunny. Isolated rain showers in the morning, then scattered rain showers and isolated thunderstorms in the afternoon. * Max temperature.......77-82. * 24 hr trend.........6 degrees cooler. * Min humidity..........42-47 percent. * 24 hr trend.........2 percent wetter. * Wind (20 ft) * Plains...............North winds 5 to 10 mph. * Chance of lightning...20 percent. * CWR...................10 percent. .Forecast days 3 through 7...... .MONDAY NIGHT...Mostly cloudy. Scattered showers and thunderstorms. Lows 56 to 61. Northeast winds 5 to 10 mph. .TUESDAY...Mostly cloudy. Numerous showers and scattered thunderstorms. Lows 53 to 58. Highs 71 to 76. West winds 5 to 10 mph. .WEDNESDAY...Mostly clear. Lows 57 to 62. Highs 80 to 85. Southwest winds 5 to 10 mph. .THURSDAY...Partly cloudy. Isolated showers and thunderstorms. Lows 59 to 64. Highs 86 to 91. Northeast winds 5 to 10 mph. .FRIDAY...Partly cloudy. Scattered showers and thunderstorms. Lows 57 to 62. Highs 84 to 89. .SATURDAY...Mostly sunny. Highs 77 to 82. $$ MTZ131-152230- Northern Cheyenne Indian Reservation/Ashland Ranger District Custer Natl Forest- 234 AM MDT Sun Jun 15 2025 .Today... * Sky/weather...........Mostly sunny. Scattered showers and thunderstorms in the afternoon. Some thunderstorms may be severe. * Max temperature.......85-90. * 24 hr trend.........9 degrees warmer. * Min humidity..........38-43 percent. * 24 hr trend.........18 percent drier. * Wind (20 ft) * Slope/valley.........Northwest winds 5 to 10 mph in the morning shifting to the northeast in the afternoon. * Ridgetop.............West 5 to 15 mph. * Chance of lightning...31 percent. * CWR...................Less than 10 percent. .TONIGHT... * Sky/weather...........Mostly cloudy. Rain showers with thunderstorms likely in the evening, then isolated rain showers overnight. Some thunderstorms may be severe. * Min temperature.......54-59. * 24 hr trend.........1 degree cooler. * Max humidity..........100 percent. * 24 hr trend.........5 percent wetter. * Wind (20 ft) * Slope/valley.........Southeast winds 5 to 15 mph in the evening shifting to the northwest overnight. * Ridgetop.............Southwest 5 to 15 mph. * Chance of lightning...58 percent. * CWR...................50 percent. .MONDAY... * Sky/weather...........Partly sunny. Scattered rain showers and isolated thunderstorms in the afternoon. * Max temperature.......76-81. * 24 hr trend.........9 degrees cooler. * Min humidity..........45-50 percent. * 24 hr trend.........7 percent wetter. * Wind (20 ft) * Slope/valley.........North winds 5 to 15 mph. * Ridgetop.............West 5 to 15 mph. * Chance of lightning...23 percent. * CWR...................10 percent. .Forecast days 3 through 7...... .MONDAY NIGHT...Mostly cloudy. Numerous showers and scattered thunderstorms. Lows 53 to 58. East winds 5 to 10 mph. .TUESDAY...Mostly cloudy. Showers and scattered thunderstorms. Lows 49 to 54. Highs 68 to 73. Northwest winds 5 to 10 mph. .WEDNESDAY...Clear. Lows 55 to 60. Highs 78 to 83. Southwest winds 5 to 10 mph. .THURSDAY...Mostly clear. Lows 56 to 61. Highs 86 to 91. Southeast winds 5 to 15 mph. .FRIDAY...Mostly clear. Lows 55 to 60. Highs 86 to 91. .SATURDAY...Mostly sunny. Highs 79 to 84. $$ MTZ132-152230- Custer County- 234 AM MDT Sun Jun 15 2025 .Today... * Sky/weather...........Mostly sunny. Scattered showers and thunderstorms in the afternoon. Some thunderstorms may be severe. * Max temperature.......82-87. * 24 hr trend.........7 degrees warmer. * Min humidity..........43-48 percent. * 24 hr trend.........13 percent drier. * Wind (20 ft) * Plains...............East winds 5 to 15 mph. * Chance of lightning...31 percent. * CWR...................10 percent. .TONIGHT... * Sky/weather...........Mostly cloudy. Rain showers with thunderstorms likely in the evening, then numerous rain showers and scattered thunderstorms overnight. Patchy fog overnight. Some thunderstorms may be severe. * Min temperature.......55-60. * 24 hr trend.........2 degrees cooler. * Max humidity..........94-99 percent. * 24 hr trend.........4 percent wetter. * Wind (20 ft) * Plains...............East winds 5 to 15 mph in the evening shifting to the north overnight. * Chance of lightning...72 percent. * CWR...................90 percent. .MONDAY... * Sky/weather...........Mostly sunny. Isolated rain showers in the morning, then scattered rain showers and isolated thunderstorms in the afternoon. * Max temperature.......74-79. * 24 hr trend.........8 degrees cooler. * Min humidity..........42-47 percent. * 24 hr trend.........1 percent drier. * Wind (20 ft) * Plains...............Northwest winds 5 to 15 mph. * Chance of lightning...20 percent. * CWR...................20 percent. .Forecast days 3 through 7...... .MONDAY NIGHT...Mostly cloudy. Scattered showers and thunderstorms. Lows 55 to 60. East winds 5 to 10 mph. .TUESDAY...Mostly cloudy. Numerous showers and scattered thunderstorms. Lows 52 to 57. Highs 70 to 75. East winds 5 to 10 mph. .WEDNESDAY...Mostly clear. Lows 55 to 60. Highs 77 to 82. Southwest winds 5 to 15 mph. .THURSDAY...Partly cloudy. Isolated showers and thunderstorms. Lows 58 to 63. Highs 83 to 88. Southeast winds 5 to 15 mph. .FRIDAY...Partly cloudy. Scattered showers and thunderstorms. Lows 56 to 61. Highs 83 to 88. .SATURDAY...Mostly sunny. Isolated showers. Highs 75 to 80. $$ MTZ133-152230- Sioux Ranger District Custer National Forest- 234 AM MDT Sun Jun 15 2025 .Today... * Sky/weather...........Mostly sunny. Patchy fog in the morning. * Max temperature.......82-87. * 24 hr trend.........11 degrees warmer. * Min humidity..........51-56 percent. * 24 hr trend.........13 percent drier. * Wind (20 ft) * Plains...............East winds 5 to 15 mph. * Chance of lightning...14 percent. * CWR...................Less than 10 percent. .TONIGHT... * Sky/weather...........Mostly cloudy. Rain showers with thunderstorms likely in the evening, then rain showers and scattered thunderstorms overnight. Some thunderstorms may be severe. Some thunderstorms may be severe. * Min temperature.......56-61. * 24 hr trend.........Unchanged. * Max humidity..........90-95 percent. * 24 hr trend.........5 percent drier. * Wind (20 ft) * Plains...............Southeast winds 5 to 15 mph in the evening shifting to the north overnight. * Chance of lightning...69 percent. * CWR...................80 percent. .MONDAY... * Sky/weather...........Mostly sunny. Isolated showers and thunderstorms in the afternoon. * Max temperature.......76-81. * 24 hr trend.........6 degrees cooler. * Min humidity..........48-53 percent. * 24 hr trend.........3 percent drier. * Wind (20 ft) * Plains...............North winds 10 to 20 mph. * Chance of lightning...20 percent. * CWR...................10 percent. .Forecast days 3 through 7...... .MONDAY NIGHT...Mostly cloudy. Scattered showers and thunderstorms. Lows 54 to 59. North winds 5 to 15 mph. .TUESDAY...Mostly cloudy. Numerous showers and scattered thunderstorms. Lows 51 to 56. Highs 69 to 74. Northeast winds 5 to 10 mph. .WEDNESDAY...Mostly clear. Lows 53 to 58. Highs 76 to 81. Southwest winds 5 to 15 mph. .THURSDAY...Mostly clear. Isolated showers. Lows 56 to 61. Highs 83 to 88. Southeast winds 5 to 15 mph. .FRIDAY...Mostly clear. Isolated showers and thunderstorms. Lows 57 to 62. Highs 84 to 89. .SATURDAY...Sunny. Highs 79 to 84. $$ WYZ274-152230- Sheridan County- 234 AM MDT Sun Jun 15 2025 .Today... * Sky/weather...........Mostly sunny. Scattered showers and thunderstorms in the afternoon. Some thunderstorms may be severe. * Max temperature.......83-88. * 24 hr trend.........11 degrees warmer. * Min humidity..........40-45 percent. * 24 hr trend.........20 percent drier. * Wind (20 ft) * Slope/valley.........Northwest winds 5 to 10 mph in the morning shifting to the northeast in the afternoon. * Ridgetop.............Southwest 5 to 10 mph. * Chance of lightning...34 percent. * CWR...................10 percent. .TONIGHT... * Sky/weather...........Mostly cloudy. Scattered showers and thunderstorms in the evening. Patchy fog overnight. Some thunderstorms may be severe. * Min temperature.......50-55. * 24 hr trend.........1 degree cooler. * Max humidity..........100 percent. * 24 hr trend.........14 percent wetter. * Wind (20 ft) * Slope/valley.........South winds 5 to 15 mph in the evening shifting to the northwest 5 to 10 mph overnight. * Ridgetop.............West 5 to 15 mph. * Chance of lightning...42 percent. * CWR...................20 percent. .MONDAY... * Sky/weather...........Partly sunny. Patchy fog in the morning. Scattered showers and thunderstorms in the afternoon. * Max temperature.......74-79. * 24 hr trend.........9 degrees cooler. * Min humidity..........50-55 percent. * 24 hr trend.........10 percent wetter. * Wind (20 ft) * Slope/valley.........North winds 5 to 10 mph. * Ridgetop.............West 10 to 20 mph. * Chance of lightning...39 percent. * CWR...................10 percent. .Forecast days 3 through 7...... .MONDAY NIGHT...Mostly cloudy. Numerous showers and scattered thunderstorms. Lows 49 to 54. Southwest winds 5 to 10 mph. .TUESDAY...Mostly cloudy. Showers and scattered thunderstorms. Lows 46 to 51. Highs 69 to 74. Northwest winds 5 to 10 mph. .WEDNESDAY...Mostly clear. Lows 50 to 55. Highs 78 to 83. South winds 5 to 10 mph. .THURSDAY...Mostly clear. Lows 55 to 60. Highs 86 to 91. South winds 5 to 10 mph. .FRIDAY...Mostly clear. Lows 53 to 58. Highs 86 to 91. .SATURDAY...Mostly sunny. Highs 79 to 84. $$ WYZ284-152230- Bighorn National Forest- 234 AM MDT Sun Jun 15 2025 .Today... * Sky/weather...........Mostly sunny. Scattered showers and thunderstorms in the afternoon. Some thunderstorms may be severe. * Max temperature.......71-76. * 24 hr trend.........2 degrees cooler. * Min humidity..........26-31 percent. * 24 hr trend.........7 percent wetter. * Wind (20 ft) * At Burgess Jct.......South winds 5 to 15 mph. * Chance of lightning...36 percent. * CWR...................20 percent. .TONIGHT... * Sky/weather...........Partly cloudy. Scattered showers and thunderstorms in the evening, then isolated rain showers overnight. Some thunderstorms may be severe. * Min temperature.......43-48. * 24 hr trend.........4 degrees cooler. * Max humidity..........84-89 percent. * 24 hr trend.........21 percent wetter. * Wind (20 ft) * At Burgess Jct.......Southwest winds 5 to 15 mph. * Chance of lightning...34 percent. * CWR...................10 percent. .MONDAY... * Sky/weather...........Mostly cloudy. Isolated rain showers in the morning, then numerous rain showers and scattered thunderstorms in the afternoon. * Max temperature.......64-69. * 24 hr trend.........7 degrees cooler. * Min humidity..........40-45 percent. * 24 hr trend.........14 percent wetter. * Wind (20 ft) * At Burgess Jct.......West winds 5 to 15 mph. * Chance of lightning...38 percent. * CWR...................10 percent. .Forecast days 3 through 7...... .MONDAY NIGHT...Mostly cloudy. Showers and scattered thunderstorms. Lows 41 to 46. Southwest winds 5 to 15 mph. .TUESDAY...Mostly cloudy. Showers and scattered thunderstorms. Lows 39 to 44. Highs 55 to 60. West winds 5 to 15 mph. .WEDNESDAY...Mostly clear. Lows 45 to 50. Highs 63 to 68. West winds 5 to 15 mph. .THURSDAY...Mostly clear. Lows 49 to 54. Highs 72 to 77. Southwest winds 10 to 20 mph. .FRIDAY...Mostly clear. Isolated showers and thunderstorms. Lows 46 to 51. Highs 72 to 77. .SATURDAY...Mostly sunny. Isolated showers and thunderstorms. Highs 65 to 70. $$ weather.gov/billings