Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS Billings, MT
Issued by NWS Billings, MT
270 FNUS55 KBYZ 170847 FWFBYZ Fire Weather Planning Forecast for SCen and SErn Montana National Weather Service Billings MT 247 AM MDT Sat May 17 2025 .DISCUSSION... Expect scattered showers and a few thunderstorms this afternoon and evening, mainly over western and central zones. Winds will shift to the east and be lighter today. Look for a dynamic weather system to bring rain, mountain snow, cooler temps and gusty winds Sunday and Monday. Precipitation amounts are expected to range from 0.50" to 1.50", and 2+ inches is possible (20-30% chance) near the Bighorns. Unsettled weather and elevated humidities will continue through next week. JKL MTZ123-172215- Gallatin National Forest- 247 AM MDT Sat May 17 2025 .Today... * Sky/weather...........Partly sunny. Isolated rain showers and snow showers in the morning, then scattered rain showers and isolated thunderstorms in the afternoon. * Max temperature.......57-66 at 5000 feet...47-57 at 7000 feet. * 24 hr trend.........10 degrees warmer. * Min humidity..........35-45 percent at 5000 feet...43-53 percent at 7000 feet. * 24 hr trend.........28 percent drier. * Wind (20 ft) * Slope/valley.........South winds 5 to 10 mph. * Ridgetop.............South 5 to 15 mph. * Chance of lightning...17 percent. * CWR...................Zero. .TONIGHT... * Sky/weather...........Mostly cloudy. Numerous rain showers and isolated thunderstorms in the evening, then rain showers overnight. * Min temperature.......39-47 at 5000 feet...31-41 at 7000 feet. * 24 hr trend.........3 degrees warmer. * Max humidity..........85-95 percent at 5000 feet...80-90 percent at 7000 feet. * 24 hr trend.........9 percent drier. * Wind (20 ft) * Slope/valley.........South winds 5 to 10 mph. * Ridgetop.............South 10 to 20 mph. * Chance of lightning...17 percent. * CWR...................20 percent. .SUNDAY... * Sky/weather...........Cloudy. Rain showers, snow showers and isolated thunderstorms in the morning, then rain showers and isolated thunderstorms in the afternoon. * Max temperature.......47-55 at 5000 feet...38-48 at 7000 feet. * 24 hr trend.........13 degrees cooler. * Min humidity..........64-74 percent at 5000 feet...70-80 percent at 7000 feet. * 24 hr trend.........32 percent wetter. * Wind (20 ft) * Slope/valley.........West winds 5 to 10 mph. * Ridgetop.............West 5 to 15 mph. * Chance of lightning...20 percent. * CWR...................100 percent. .Forecast days 3 through 7...... .SUNDAY NIGHT...Colder, cloudy. Numerous snow showers and showers. Lows 31 to 41. Northwest winds 5 to 10 mph. .MONDAY...Mostly cloudy. Scattered snow showers. Lows 32 to 42. Highs 50 to 60. West winds 5 to 10 mph. .TUESDAY...Mostly cloudy. Scattered showers and isolated thunderstorms. Lows 33 to 43. Highs 56 to 66. Southwest winds 5 to 10 mph. .WEDNESDAY...Mostly cloudy. Scattered showers and isolated thunderstorms. Lows 36 to 45. Highs 59 to 69. Southwest winds 5 to 10 mph. .THURSDAY...Mostly cloudy. Scattered showers and isolated thunderstorms. Lows 34 to 43. Highs 59 to 69. .FRIDAY...Mostly sunny. Scattered showers and isolated thunderstorms. Highs 61 to 71. $$ MTZ124-172215- Wheatland County/Sweet Grass County- 247 AM MDT Sat May 17 2025 .Today... * Sky/weather...........Partly sunny. Patchy fog in the morning. Scattered rain showers and isolated thunderstorms in the afternoon. * Max temperature.......60-65. * 24 hr trend.........3 degrees warmer. * Min humidity..........43-48 percent. * 24 hr trend.........12 percent wetter. * Wind (20 ft) * Plains...............West winds 5 to 10 mph in the morning shifting to the southeast 5 to 15 mph in the afternoon. * Chance of lightning...17 percent. * CWR...................20 percent. .TONIGHT... * Sky/weather...........Mostly cloudy. Scattered rain showers and isolated thunderstorms in the evening, then numerous rain showers overnight. * Min temperature.......41-46. * 24 hr trend.........6 degrees warmer. * Max humidity..........90-95 percent. * 24 hr trend.........Unchanged. * Wind (20 ft) * Plains...............East winds 5 to 15 mph. * Chance of lightning...17 percent. * CWR...................20 percent. .SUNDAY... * Sky/weather...........Cloudy. Numerous rain showers in the morning, then rain showers and isolated thunderstorms in the afternoon. * Max temperature.......54-59. * 24 hr trend.........6 degrees cooler. * Min humidity..........64-69 percent. * 24 hr trend.........21 percent wetter. * Wind (20 ft) * Plains...............East winds 5 to 15 mph in the morning shifting to the north 10 to 20 mph with gusts to around 30 mph in the afternoon. * Chance of lightning...22 percent. * CWR...................90 percent. .Forecast days 3 through 7...... .SUNDAY NIGHT...Cloudy. Showers and isolated thunderstorms. Lows 35 to 40. Northwest winds 15 to 25 mph with gusts to around 30 mph. .MONDAY...Mostly cloudy. Numerous showers. Lows 35 to 40. Highs 53 to 58. West winds 10 to 20 mph with gusts to around 30 mph. .TUESDAY...Mostly cloudy. Scattered showers and isolated thunderstorms. Lows 35 to 40. Highs 60 to 65. West winds 10 to 20 mph with gusts to around 30 mph. .WEDNESDAY...Mostly cloudy. Scattered showers and isolated thunderstorms. Lows 37 to 42. Highs 62 to 67. West winds 5 to 15 mph. .THURSDAY...Mostly cloudy. Scattered showers and isolated thunderstorms. Lows 35 to 40. Highs 60 to 65. .FRIDAY...Mostly sunny. Scattered showers and isolated thunderstorms. Highs 61 to 66. $$ MTZ125-172215- Stillwater County- 247 AM MDT Sat May 17 2025 .Today... * Sky/weather...........Mostly sunny. Scattered rain showers and isolated thunderstorms in the afternoon. * Max temperature.......63-68. * 24 hr trend.........4 degrees warmer. * Min humidity..........38-43 percent. * 24 hr trend.........2 percent wetter. * Wind (20 ft) * Plains...............Southeast winds 5 to 10 mph. * Chance of lightning...17 percent. * CWR...................Zero. .TONIGHT... * Sky/weather...........Cloudy. Scattered rain showers and isolated thunderstorms in the evening, then scattered rain showers overnight. * Min temperature.......43-48. * 24 hr trend.........4 degrees warmer. * Max humidity..........84-89 percent. * 24 hr trend.........7 percent drier. * Wind (20 ft) * Plains...............East winds 5 to 10 mph in the evening becoming light overnight. * Chance of lightning...17 percent. * CWR...................Less than 10 percent. .SUNDAY... * Sky/weather...........Cloudy. Numerous rain showers in the morning, then rain showers and scattered thunderstorms in the afternoon. * Max temperature.......57-62. * 24 hr trend.........6 degrees cooler. * Min humidity..........55-60 percent. * 24 hr trend.........17 percent wetter. * Wind (20 ft) * Plains...............Northwest winds 5 to 15 mph. * Chance of lightning...28 percent. * CWR...................90 percent. .Forecast days 3 through 7...... .SUNDAY NIGHT...Cloudy. Showers and isolated thunderstorms. Lows 38 to 43. Northwest winds 10 to 20 mph. .MONDAY...Mostly cloudy. Numerous showers. Lows 37 to 42. Highs 54 to 59. West winds 5 to 15 mph. .TUESDAY...Mostly cloudy. Numerous showers and isolated thunderstorms. Lows 38 to 43. Highs 62 to 67. West winds 5 to 15 mph. .WEDNESDAY...Mostly cloudy. Scattered showers and isolated thunderstorms. Lows 41 to 46. Highs 64 to 69. West winds 5 to 10 mph. .THURSDAY...Mostly cloudy. Scattered showers and isolated thunderstorms. Lows 39 to 44. Highs 65 to 70. .FRIDAY...Mostly sunny. Scattered showers and isolated thunderstorms. Highs 64 to 69. $$ MTZ126-172215- Beartooth Ranger District Custer National Forest- 247 AM MDT Sat May 17 2025 .Today... * Sky/weather...........Mostly sunny. Scattered rain showers and isolated thunderstorms in the afternoon. * Max temperature.......59-67 at 5000 feet...50-60 at 7000 feet. * 24 hr trend.........11 degrees warmer. * Min humidity..........31-41 percent at 5000 feet...40-50 percent at 7000 feet. * 24 hr trend.........7 percent drier. * Wind (20 ft) * Slope/valley.........Southeast winds 5 to 15 mph. * Ridgetop.............Southwest 5 to 10 mph. * Chance of lightning...17 percent. * CWR...................20 percent. .TONIGHT... * Sky/weather...........Mostly cloudy. Numerous rain showers with possible snow showers and thunderstorms in the evening, then numerous rain showers and snow showers overnight. * Min temperature.......44-49 at 5000 feet...36-46 at 7000 feet. * 24 hr trend.........5 degrees warmer. * Max humidity..........76-81 percent. * 24 hr trend.........11 percent drier. * Wind (20 ft) * Slope/valley.........South winds 5 to 10 mph. * Ridgetop.............South 10 to 20 mph. * Chance of lightning...17 percent. * CWR...................10 percent. .SUNDAY... * Sky/weather...........Mostly cloudy. Numerous rain showers and snow showers in the morning, then rain showers and scattered thunderstorms in the afternoon. * Max temperature.......56-66 at 5000 feet...47-57 at 7000 feet. * 24 hr trend.........4 degrees cooler. * Min humidity..........49-59 percent at 5000 feet...57-67 percent at 7000 feet. * 24 hr trend.........15 percent wetter. * Wind (20 ft) * Slope/valley.........North winds 5 to 15 mph. * Ridgetop.............South 5 to 15 mph. * Chance of lightning...31 percent. * CWR...................100 percent. .Forecast days 3 through 7...... .SUNDAY NIGHT...Cloudy. Snow showers and isolated thunderstorms. Lows 38 to 43. Northwest winds 15 to 25 mph with gusts to around 30 mph. .MONDAY...Mostly cloudy. Numerous snow showers. Lows 38 to 43. Highs 44 to 54. Northwest winds 10 to 20 mph with gusts to around 30 mph. .TUESDAY...Mostly cloudy. Numerous snow showers and isolated thunderstorms. Lows 39 to 45. Highs 56 to 64. West winds 5 to 15 mph. .WEDNESDAY...Mostly cloudy. Scattered showers, snow showers and isolated thunderstorms. Lows 42 to 48. Highs 58 to 66. West winds 5 to 15 mph. .THURSDAY...Mostly cloudy. Scattered showers, snow showers and isolated thunderstorms. Lows 40 to 45. Highs 61 to 69. .FRIDAY...Mostly sunny. Scattered showers, isolated thunderstorms and snow showers. Highs 61 to 68. $$ MTZ127-172215- Golden Valley County/Musselshell county- 247 AM MDT Sat May 17 2025 .Today... * Sky/weather...........Mostly sunny. Isolated showers and thunderstorms in the afternoon. * Max temperature.......61-66. * 24 hr trend.........7 degrees warmer. * Min humidity..........39-44 percent. * 24 hr trend.........6 percent drier. * Wind (20 ft) * Plains...............South winds 5 to 10 mph. * Chance of lightning...17 percent. * CWR...................Zero. .TONIGHT... * Sky/weather...........Mostly cloudy. Isolated showers and thunderstorms in the evening, then scattered rain showers overnight. * Min temperature.......46-51. * 24 hr trend.........3 degrees warmer. * Max humidity..........73-78 percent. * 24 hr trend.........11 percent drier. * Wind (20 ft) * Plains...............East winds 10 to 20 mph. * Chance of lightning...17 percent. * CWR...................Zero. .SUNDAY... * Sky/weather...........Mostly cloudy. Scattered rain showers in the morning, then rain showers and isolated thunderstorms in the afternoon. * Max temperature.......57-62. * 24 hr trend.........4 degrees cooler. * Min humidity..........60-65 percent. * 24 hr trend.........21 percent wetter. * Wind (20 ft) * Plains...............Northeast winds 10 to 20 mph. * Chance of lightning...24 percent. * CWR...................80 percent. .Forecast days 3 through 7...... .SUNDAY NIGHT...Cloudy. Showers and scattered thunderstorms. Lows 41 to 46. North winds 15 to 25 mph with gusts to around 30 mph. .MONDAY...Cooler. Mostly cloudy. Showers. Lows 40 to 45. Highs 46 to 51. North winds 5 to 15 mph. .TUESDAY...Warmer. Mostly cloudy. Scattered showers. Lows 43 to 48. Highs 59 to 64. West winds 5 to 15 mph. .WEDNESDAY...Partly cloudy. Scattered showers and isolated thunderstorms. Lows 45 to 50. Highs 61 to 66. South winds 5 to 15 mph. .THURSDAY...Mostly cloudy. Scattered showers and isolated thunderstorms. Lows 43 to 48. Highs 60 to 65. .FRIDAY...Mostly sunny. Scattered showers and isolated thunderstorms. Highs 60 to 65. $$ MTZ128-172215- Yellowstone County- 247 AM MDT Sat May 17 2025 .Today... * Sky/weather...........Mostly sunny. Patchy fog in the morning. Isolated showers and thunderstorms in the afternoon. * Max temperature.......66-71. * 24 hr trend.........4 degrees warmer. * Min humidity..........37-42 percent. * 24 hr trend.........2 percent wetter. * Wind (20 ft) * Plains...............Southwest winds 5 to 10 mph in the morning shifting to the east 5 to 15 mph in the afternoon. * Chance of lightning...17 percent. * CWR...................Zero. .TONIGHT... * Sky/weather...........Mostly cloudy. Isolated showers and thunderstorms in the evening, then isolated rain showers overnight. * Min temperature.......47-52. * 24 hr trend.........4 degrees warmer. * Max humidity..........78-83 percent. * 24 hr trend.........6 percent drier. * Wind (20 ft) * Plains...............Northeast winds 10 to 20 mph. * Chance of lightning...17 percent. * CWR...................Zero. .SUNDAY... * Sky/weather...........Mostly cloudy. Isolated rain showers in the morning, then rain showers and scattered thunderstorms in the afternoon. * Max temperature.......63-68. * 24 hr trend.........3 degrees cooler. * Min humidity..........53-58 percent. * 24 hr trend.........16 percent wetter. * Wind (20 ft) * Plains...............North winds 5 to 15 mph. * Chance of lightning...28 percent. * CWR...................90 percent. .Forecast days 3 through 7...... .SUNDAY NIGHT...Cloudy. Showers and scattered thunderstorms. Lows 43 to 48. Northwest winds 15 to 25 mph with gusts to around 35 mph. .MONDAY...Cooler. Mostly cloudy. Numerous showers. Lows 41 to 46. Highs 51 to 56. Northwest winds 10 to 20 mph with gusts to around 30 mph. .TUESDAY...Warmer. Mostly cloudy. Scattered showers and isolated thunderstorms. Lows 42 to 47. Highs 64 to 69. West winds 5 to 15 mph. .WEDNESDAY...Partly cloudy. Scattered showers and isolated thunderstorms. Lows 45 to 50. Highs 66 to 71. North winds 5 to 15 mph. .THURSDAY...Mostly cloudy. Scattered showers and isolated thunderstorms. Lows 43 to 48. Highs 66 to 71. .FRIDAY...Mostly sunny. Scattered showers and isolated thunderstorms. Highs 65 to 70. $$ MTZ129-172215- Crow Indian Reservation/Bighorn Canyon Rec Area- 247 AM MDT Sat May 17 2025 .Today... * Sky/weather...........Mostly sunny. Scattered rain showers and isolated thunderstorms in the afternoon. * Max temperature.......58-68 at 5000 feet...52-59 at 7000 feet. * 24 hr trend.........7 degrees warmer. * Min humidity..........32-42 percent at 5000 feet...46-56 percent at 7000 feet. * 24 hr trend.........8 percent drier. * Wind (20 ft) * Slope/valley.........Southeast winds 5 to 15 mph. * Ridgetop.............Southwest 5 to 10 mph. * Chance of lightning...17 percent. * CWR...................Zero. .TONIGHT... * Sky/weather...........Mostly cloudy. Isolated showers and thunderstorms in the evening. * Min temperature.......45-50 at 5000 feet...41-46 at 7000 feet. * 24 hr trend.........7 degrees warmer. * Max humidity..........71-76 percent. * 24 hr trend.........23 percent drier. * Wind (20 ft) * Slope/valley.........Southeast winds 10 to 20 mph. * Ridgetop.............South 10 to 20 mph. * Chance of lightning...16 percent. * CWR...................Zero. .SUNDAY... * Sky/weather...........Mostly cloudy. Isolated rain showers in the morning, then rain showers and scattered thunderstorms in the afternoon. Some thunderstorms may produce heavy rainfall in the afternoon. * Max temperature.......57-67 at 5000 feet...51-58 at 7000 feet. * 24 hr trend.........1 degree warmer. * Min humidity..........46-56 percent at 5000 feet...52-57 percent at 7000 feet. * 24 hr trend.........8 percent wetter. * Wind (20 ft) * Slope/valley.........Southeast winds 10 to 20 mph. * Ridgetop.............South 15 to 25 mph. * Chance of lightning...35 percent. * CWR...................90 percent. .Forecast days 3 through 7...... .SUNDAY NIGHT...Cloudy. Showers and scattered thunderstorms. Lows 36 to 43. West winds 10 to 20 mph with gusts to around 30 mph. .MONDAY...Much colder. Cloudy, showers. Lows 37 to 43. Highs 41 to 51. Northwest winds 10 to 20 mph. .TUESDAY...Warmer. Mostly cloudy. Scattered showers. Lows 39 to 45. Highs 56 to 66. West winds 5 to 15 mph. .WEDNESDAY...Mostly cloudy. Scattered showers and isolated thunderstorms. Lows 43 to 48. Highs 58 to 68. Southwest winds 5 to 15 mph. .THURSDAY...Mostly cloudy. Scattered showers and isolated thunderstorms. Lows 40 to 46. Highs 59 to 69. .FRIDAY...Partly sunny. Scattered showers and isolated thunderstorms. Highs 58 to 68. $$ MTZ130-172215- Northern Rosebud/Northern Treasure Counties- 247 AM MDT Sat May 17 2025 .Today... * Sky/weather...........Mostly sunny. Patchy fog in the morning. Isolated rain showers in the afternoon. * Max temperature.......67-72. * 24 hr trend.........9 degrees warmer. * Min humidity..........36-41 percent. * 24 hr trend.........4 percent drier. * Wind (20 ft) * Plains...............Southeast winds 5 to 15 mph. * Chance of lightning...2 percent. * CWR...................Zero. .TONIGHT... * Sky/weather...........Mostly cloudy. Isolated showers and thunderstorms in the evening, then isolated rain showers overnight. * Min temperature.......47-52. * 24 hr trend.........7 degrees warmer. * Max humidity..........73-78 percent. * 24 hr trend.........5 percent drier. * Wind (20 ft) * Plains...............East winds 10 to 20 mph. * Chance of lightning...16 percent. * CWR...................Zero. .SUNDAY... * Sky/weather...........Mostly cloudy. Scattered rain showers in the morning, then numerous rain showers and isolated thunderstorms in the afternoon. * Max temperature.......68-73. * 24 hr trend.........1 degree warmer. * Min humidity..........44-49 percent. * 24 hr trend.........8 percent wetter. * Wind (20 ft) * Plains...............East winds 15 to 25 mph with gusts to around 30 mph. * Chance of lightning...24 percent. * CWR...................60 percent. .Forecast days 3 through 7...... .SUNDAY NIGHT...Cloudy. Showers and scattered thunderstorms. Lows 43 to 48. East winds 10 to 20 mph. .MONDAY...Cooler, cloudy, showers. Lows 41 to 46. Highs 49 to 54. East winds 5 to 15 mph. .TUESDAY...Warmer. Mostly cloudy. Scattered showers. Lows 41 to 46. Highs 60 to 65. North winds 5 to 10 mph. .WEDNESDAY...Mostly cloudy. Scattered showers and isolated thunderstorms. Lows 45 to 50. Highs 64 to 69. Northwest winds 5 to 10 mph. .THURSDAY...Mostly cloudy. Scattered showers. Lows 45 to 50. Highs 67 to 72. .FRIDAY...Partly sunny. Scattered showers. Highs 64 to 69. $$ MTZ131-172215- Northern Cheyenne Indian Reservation/Ashland Ranger District Custer Natl Forest- 247 AM MDT Sat May 17 2025 .Today... * Sky/weather...........Mostly sunny. Isolated showers and thunderstorms in the afternoon. * Max temperature.......67-72. * 24 hr trend.........9 degrees warmer. * Min humidity..........34-39 percent. * 24 hr trend.........8 percent drier. * Wind (20 ft) * Slope/valley.........Southeast winds 5 to 15 mph. * Ridgetop.............South 5 to 10 mph. * Chance of lightning...17 percent. * CWR...................Zero. .TONIGHT... * Sky/weather...........Partly cloudy. Isolated showers and thunderstorms in the evening. * Min temperature.......46-51. * 24 hr trend.........9 degrees warmer. * Max humidity..........77-82 percent. * 24 hr trend.........14 percent drier. * Wind (20 ft) * Slope/valley.........Southeast winds 10 to 20 mph with gusts to around 30 mph. * Ridgetop.............South 15 to 25 mph. * Chance of lightning...16 percent. * CWR...................Zero. .SUNDAY... * Sky/weather...........Partly sunny in the morning, then cloudy with rain showers and scattered thunderstorms in the afternoon. * Max temperature.......70-75. * 24 hr trend.........3 degrees warmer. * Min humidity..........38-43 percent. * 24 hr trend.........4 percent wetter. * Wind (20 ft) * Slope/valley.........Southeast winds 10 to 20 mph. * Ridgetop.............South 15 to 30 mph. * Chance of lightning...31 percent. * CWR...................70 percent. .Forecast days 3 through 7...... .SUNDAY NIGHT...Cloudy. Showers and scattered thunderstorms. Lows 40 to 45. East winds 10 to 20 mph. .MONDAY...Much cooler. Cloudy, showers. Lows 37 to 42. Highs 45 to 50. North winds 5 to 15 mph. .TUESDAY...Warmer. Mostly cloudy. Scattered showers. Lows 39 to 44. Highs 59 to 64. Northwest winds 5 to 15 mph. .WEDNESDAY...Partly cloudy. Scattered showers and isolated thunderstorms. Lows 43 to 48. Highs 64 to 69. West winds 5 to 15 mph. .THURSDAY...Mostly cloudy. Scattered showers and isolated thunderstorms. Lows 43 to 48. Highs 66 to 71. .FRIDAY...Mostly sunny. Scattered showers. Highs 64 to 69. $$ MTZ132-172215- Custer County- 247 AM MDT Sat May 17 2025 .Today... * Sky/weather...........Mostly sunny. Patchy fog in the morning. * Max temperature.......61-66. * 24 hr trend.........5 degrees warmer. * Min humidity..........40-45 percent. * 24 hr trend.........3 percent drier. * Wind (20 ft) * Plains...............Southeast winds 5 to 15 mph. * Chance of lightning...0 percent. * CWR...................Zero. .TONIGHT... * Sky/weather...........Partly cloudy. * Min temperature.......42-47. * 24 hr trend.........6 degrees warmer. * Max humidity..........78-83 percent. * 24 hr trend.........8 percent drier. * Wind (20 ft) * Plains...............East winds 10 to 20 mph with gusts to around 35 mph. * Chance of lightning...7 percent. * CWR...................Zero. .SUNDAY... * Sky/weather...........Partly sunny. Scattered rain showers in the morning, then scattered rain showers and isolated thunderstorms in the afternoon. * Max temperature.......59-64. * 24 hr trend.........2 degrees cooler. * Min humidity..........55-60 percent. * 24 hr trend.........15 percent wetter. * Wind (20 ft) * Plains...............Windy. Southeast winds 15 to 30 mph. Gusts up to 35 mph in the morning increasing to 45 mph in the afternoon. * Chance of lightning...17 percent. * CWR...................10 percent. .Forecast days 3 through 7...... .SUNDAY NIGHT...Cloudy. Showers and isolated thunderstorms. Lows 41 to 46. East winds 15 to 25 mph with gusts to around 40 mph. .MONDAY...Cooler, cloudy, showers. Lows 39 to 44. Highs 45 to 50. East winds 5 to 15 mph. .TUESDAY...Mostly cloudy. Scattered showers. Lows 37 to 42. Highs 52 to 57. Northeast winds 5 to 10 mph. .WEDNESDAY...Partly cloudy. Scattered showers. Lows 42 to 47. Highs 60 to 65. South winds 5 to 15 mph. .THURSDAY...Mostly cloudy. Scattered showers. Lows 43 to 48. Highs 64 to 69. .FRIDAY...Partly sunny. Scattered showers. Highs 62 to 67. $$ MTZ133-172215- Sioux Ranger District Custer National Forest- 247 AM MDT Sat May 17 2025 .Today... * Sky/weather...........Mostly sunny. Patchy fog in the morning. * Max temperature.......60-65. * 24 hr trend.........5 degrees warmer. * Min humidity..........46-51 percent. * 24 hr trend.........5 percent drier. * Wind (20 ft) * Plains...............Southeast winds 5 to 15 mph. * Chance of lightning...1 percent. * CWR...................Zero. .TONIGHT... * Sky/weather...........Partly cloudy. Isolated rain showers overnight. * Min temperature.......40-45. * 24 hr trend.........7 degrees warmer. * Max humidity..........91-96 percent. * 24 hr trend.........Unchanged. * Wind (20 ft) * Plains...............Southeast winds 15 to 25 mph with gusts to around 35 mph. * Chance of lightning...9 percent. * CWR...................Zero. .SUNDAY... * Sky/weather...........Mostly cloudy. Scattered rain showers in the morning, then scattered rain showers and isolated thunderstorms in the afternoon. * Max temperature.......56-61. * 24 hr trend.........4 degrees cooler. * Min humidity..........65-70 percent. * 24 hr trend.........19 percent wetter. * Wind (20 ft) * Plains...............Windy. Southeast winds 20 to 35 mph with gusts to around 50 mph. * Chance of lightning...24 percent. * CWR...................20 percent. .Forecast days 3 through 7...... .SUNDAY NIGHT...Windy, cloudy. Showers and isolated thunderstorms. Lows 38 to 43. East winds 15 to 30 mph with gusts to around 45 mph. .MONDAY...Cooler, cloudy, showers. Lows 37 to 42. Highs 43 to 48. Northeast winds 10 to 20 mph. .TUESDAY...Mostly cloudy. Numerous showers. Lows 35 to 40. Highs 49 to 54. Northeast winds 5 to 15 mph. .WEDNESDAY...Partly cloudy. Scattered showers. Lows 38 to 43. Highs 59 to 64. South winds 5 to 15 mph. .THURSDAY...Mostly cloudy. Scattered showers. Lows 43 to 48. Highs 64 to 69. .FRIDAY...Partly sunny. Scattered showers. Highs 61 to 66. $$ WYZ274-172215- Sheridan County- 247 AM MDT Sat May 17 2025 .Today... * Sky/weather...........Mostly sunny. Patchy fog in the morning. Scattered rain showers and isolated thunderstorms in the afternoon. * Max temperature.......66-71. * 24 hr trend.........8 degrees warmer. * Min humidity..........35-40 percent. * 24 hr trend.........7 percent drier. * Wind (20 ft) * Slope/valley.........East winds 5 to 10 mph. * Ridgetop.............South 5 to 10 mph. * Chance of lightning...17 percent. * CWR...................Zero. .TONIGHT... * Sky/weather...........Mostly cloudy. Isolated showers and thunderstorms in the evening. * Min temperature.......42-47. * 24 hr trend.........8 degrees warmer. * Max humidity..........82-87 percent. * 24 hr trend.........7 percent drier. * Wind (20 ft) * Slope/valley.........Southeast winds 5 to 10 mph. * Ridgetop.............South 10 to 20 mph. * Chance of lightning...17 percent. * CWR...................Zero. .SUNDAY... * Sky/weather...........Mostly cloudy. Rain showers and scattered thunderstorms in the afternoon. Some thunderstorms may produce heavy rainfall in the afternoon. * Max temperature.......68-73. * 24 hr trend.........2 degrees warmer. * Min humidity..........42-47 percent. * 24 hr trend.........7 percent wetter. * Wind (20 ft) * Slope/valley.........Southeast winds 5 to 15 mph. * Ridgetop.............South 10 to 20 mph. * Chance of lightning...38 percent. * CWR...................80 percent. .Forecast days 3 through 7...... .SUNDAY NIGHT...Cloudy. Showers and scattered thunderstorms. Lows 37 to 42. Northwest winds 10 to 20 mph. .MONDAY...Much cooler. Cloudy, showers. Lows 36 to 41. Highs 46 to 51. Northwest winds 10 to 20 mph with gusts to around 30 mph. .TUESDAY...Warmer. Mostly cloudy. Scattered showers. Lows 35 to 40. Highs 61 to 66. Northwest winds 5 to 15 mph. .WEDNESDAY...Partly cloudy. Scattered showers and isolated thunderstorms. Lows 38 to 43. Highs 64 to 69. Northwest winds 5 to 10 mph. .THURSDAY...Mostly cloudy. Scattered showers and isolated thunderstorms. Lows 38 to 43. Highs 68 to 73. .FRIDAY...Mostly sunny. Scattered showers and isolated thunderstorms. Highs 64 to 69. $$ WYZ284-172215- Bighorn National Forest- 247 AM MDT Sat May 17 2025 .Today... * Sky/weather...........Mostly sunny. Scattered rain showers and isolated thunderstorms in the afternoon. * Max temperature.......51-56. * 24 hr trend.........7 degrees warmer. * Min humidity..........40-45 percent. * 24 hr trend.........7 percent drier. * Wind (20 ft) * At Burgess Jct.......South winds 5 to 15 mph. * Chance of lightning...17 percent. * CWR...................Zero. .TONIGHT... * Sky/weather...........Mostly cloudy. Scattered rain showers and isolated thunderstorms in the evening, then isolated rain showers overnight. * Min temperature.......36-41. * 24 hr trend.........8 degrees warmer. * Max humidity..........69-74 percent. * 24 hr trend.........18 percent drier. * Wind (20 ft) * At Burgess Jct.......South winds 5 to 15 mph. * Chance of lightning...17 percent. * CWR...................Zero. .SUNDAY... * Sky/weather...........Mostly cloudy. Scattered rain showers in the morning, then rain showers and scattered thunderstorms in the afternoon. Some thunderstorms may produce heavy rainfall in the afternoon. * Max temperature.......52-57. * 24 hr trend.........1 degree warmer. * Min humidity..........45-50 percent. * 24 hr trend.........5 percent wetter. * Wind (20 ft) * At Burgess Jct.......South winds 10 to 20 mph. * Chance of lightning...41 percent. * CWR...................80 percent. .Forecast days 3 through 7...... .SUNDAY NIGHT...Colder, cloudy. Showers, snow showers and scattered thunderstorms. Lows 28 to 33. North winds 10 to 20 mph. .MONDAY...Colder, cloudy. Snow showers. Lows 28 to 33. Highs 34 to 39. Northwest winds 10 to 20 mph with gusts to around 30 mph. .TUESDAY...Not as cool. Mostly cloudy. Numerous showers and snow showers. Lows 29 to 34. Highs 47 to 52. West winds 5 to 15 mph with gusts to around 30 mph. .WEDNESDAY...Mostly cloudy. Scattered showers, snow showers and isolated thunderstorms. Lows 33 to 38. Highs 49 to 54. Southwest winds 5 to 15 mph. .THURSDAY...Mostly cloudy. Scattered showers and isolated thunderstorms. Lows 30 to 35. Highs 53 to 58. .FRIDAY...Partly sunny. Scattered showers, snow showers and isolated thunderstorms. Highs 52 to 57. $$ weather.gov/billings