Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS Billings, MT
Issued by NWS Billings, MT
943 FNUS55 KBYZ 200903 FWFBYZ Fire Weather Planning Forecast for SCen and SErn Montana National Weather Service Billings MT 303 AM MDT Mon May 20 2024 .DISCUSSION... ...Cool with daily showers through the week ahead... Showers and mountain snow expected today through Tuesday across the district, and an isolated thunderstorm is possible during the afternoon hours each day. The best areas for a wetting rain will be along and south of I-90/US-212. Significant wet snow (6-14 in)is expected over area mountains. Afternoon RH values will be elevated (35-50%) with strong recoveries overnight (80-100%). Theres a brief break in precipitation potential Tuesday night into Wednesday morning. By Wednesday afternoon another significant storm system moves into the area bringing high wetting rain chances for most of the fire district into Friday, along with mountain snowfall. The weekend forecast looks drier but still advertises a chance of showers each day into Memorial day. Chambers MTZ123-202215- Gallatin National Forest- 303 AM MDT Mon May 20 2024 .Today... * Sky/weather...........Cloudy. Snow likely in the morning, then scattered snow showers and isolated thunderstorms in the afternoon. * Max temperature.......46-53 at 5000 feet...34-44 at 7000 feet. * 24 hr trend.........1 degree cooler. * Min humidity..........46-56 percent at 5000 feet...51-61 percent at 7000 feet. * 24 hr trend.........10 percent wetter. * Wind (20 ft) * Slope/valley.........North winds 5 to 10 mph. * Ridgetop.............Northeast 5 to 15 mph. * LAL...................2...1 to 8 strikes/15 min/cell. * CWR...................50 percent. * Haines index..........3. .TONIGHT... * Sky/weather...........Mostly cloudy. Scattered snow showers and isolated thunderstorms in the evening, then scattered snow showers overnight. * Min temperature.......29-38 at 5000 feet...23-33 at 7000 feet. * 24 hr trend.........Unchanged. * Max humidity..........89-94 percent. * 24 hr trend.........8 percent wetter. * Wind (20 ft) * Slope/valley.........Northwest winds 5 to 10 mph. * Ridgetop.............North 10 to 20 mph. * LAL...................2...1 to 8 strikes/15 min/cell. * CWR...................20 percent. .TUESDAY... * Sky/weather...........Mostly cloudy. Scattered snow showers in the morning, then scattered snow showers, rain showers and isolated thunderstorms in the afternoon. * Max temperature.......52-59 at 5000 feet...41-51 at 7000 feet. * 24 hr trend.........7 degrees warmer. * Min humidity..........37-43 percent at 5000 feet...42-52 percent at 7000 feet. * 24 hr trend.........21 percent drier. * Wind (20 ft) * Slope/valley.........Northwest winds 5 to 10 mph. * Ridgetop.............Northwest 5 to 15 mph. * LAL...................2...1 to 8 strikes/15 min/cell. * CWR...................30 percent. * Haines index..........3. .Forecast days 3 through 7...... .TUESDAY NIGHT...Partly cloudy. Scattered showers, snow showers and isolated thunderstorms. Lows 33 to 39. Southwest winds 5 to 10 mph. .WEDNESDAY...Cloudy. Showers, snow showers and isolated thunderstorms. Lows 35 to 41. Highs 53 to 61. Southwest winds 5 to 10 mph. .THURSDAY...Cloudy. Snow showers and isolated thunderstorms. Lows 31 to 39. Highs 43 to 53. West winds 5 to 10 mph. .FRIDAY...Mostly cloudy. Scattered showers, isolated thunderstorms and snow showers. Lows 35 to 43. Highs 53 to 61. Southwest winds 5 to 10 mph. .SATURDAY...Mostly cloudy. Numerous showers, scattered thunderstorms and snow showers. Lows 33 to 43. Highs 58 to 66. .SUNDAY...Partly sunny. Scattered showers and snow showers. Highs 54 to 63. $$ MTZ124-202215- Wheatland County/Sweet Grass County- 303 AM MDT Mon May 20 2024 .Today... * Sky/weather...........Cloudy. Isolated rain showers in the morning, then scattered rain showers and isolated thunderstorms in the afternoon. * Max temperature.......51-56. * 24 hr trend.........5 degrees warmer. * Min humidity..........44-49 percent. * 24 hr trend.........9 percent wetter. * Wind (20 ft) * Plains...............North winds 5 to 10 mph. * LAL...................2...1 to 8 strikes/15 min/cell. * CWR...................30 percent. * Haines index..........3. .TONIGHT... * Sky/weather...........Mostly cloudy. Scattered rain showers and isolated thunderstorms in the evening. * Min temperature.......31-36. * 24 hr trend.........2 degrees warmer. * Max humidity..........84-89 percent. * 24 hr trend.........3 percent wetter. * Wind (20 ft) * Plains...............Northwest winds 5 to 15 mph. * LAL...................2...1 to 8 strikes/15 min/cell. * CWR...................10 percent. .TUESDAY... * Sky/weather...........Mostly sunny in the morning, then mostly cloudy with numerous rain showers and scattered thunderstorms in the afternoon. * Max temperature.......57-62. * 24 hr trend.........6 degrees warmer. * Min humidity..........38-43 percent. * 24 hr trend.........6 percent drier. * Wind (20 ft) * Plains...............Northwest winds 5 to 15 mph. * LAL...................3...9 to 15 strikes/15 min/cell. * CWR...................20 percent. * Haines index..........3. .Forecast days 3 through 7...... .TUESDAY NIGHT...Mostly cloudy. Scattered showers and isolated thunderstorms. Lows 34 to 39. Southwest winds 5 to 10 mph. .WEDNESDAY...Mostly cloudy. Showers and isolated thunderstorms. Lows 37 to 42. Highs 59 to 64. West winds 5 to 15 mph. .THURSDAY...Cooler. Mostly cloudy. Showers and isolated thunderstorms. Lows 34 to 39. Highs 49 to 54. Northwest winds 10 to 20 mph. .FRIDAY...Mostly cloudy. Scattered showers and isolated thunderstorms. Lows 36 to 41. Highs 59 to 64. West winds 10 to 20 mph with gusts to around 30 mph. .SATURDAY...Mostly cloudy. Scattered showers and thunderstorms. Lows 36 to 41. Highs 63 to 68. .SUNDAY...Partly sunny. Scattered showers and isolated thunderstorms. Highs 60 to 65. $$ MTZ125-202215- Stillwater County- 303 AM MDT Mon May 20 2024 .Today... * Sky/weather...........Mostly cloudy. Scattered rain showers and isolated snow showers in the morning, then numerous rain showers and scattered thunderstorms in the afternoon. * Max temperature.......49-54. * 24 hr trend.........2 degrees cooler. * Min humidity..........54-59 percent. * 24 hr trend.........20 percent wetter. * Wind (20 ft) * Plains...............North winds 5 to 10 mph. * LAL...................3...9 to 15 strikes/15 min/cell. * CWR...................50 percent. * Haines index..........3. .TONIGHT... * Sky/weather...........Mostly cloudy. Rain showers and scattered thunderstorms in the evening, then rain likely overnight. * Min temperature.......35-40. * 24 hr trend.........1 degree warmer. * Max humidity..........86-91 percent. * 24 hr trend.........13 percent wetter. * Wind (20 ft) * Plains...............West winds 5 to 15 mph. * LAL...................3...9 to 15 strikes/15 min/cell. * CWR...................70 percent. .TUESDAY... * Sky/weather...........Mostly cloudy. Rain likely in the morning, then rain showers and isolated thunderstorms in the afternoon. * Max temperature.......55-60. * 24 hr trend.........6 degrees warmer. * Min humidity..........40-45 percent. * 24 hr trend.........14 percent drier. * Wind (20 ft) * Plains...............Northwest winds 5 to 15 mph. * LAL...................2...1 to 8 strikes/15 min/cell. * CWR...................40 percent. * Haines index..........3. .Forecast days 3 through 7...... .TUESDAY NIGHT...Mostly cloudy. Scattered showers and isolated thunderstorms. Lows 35 to 40. Southwest winds 5 to 15 mph. .WEDNESDAY...Mostly cloudy. Numerous showers and isolated thunderstorms. Lows 38 to 43. Highs 60 to 65. Southwest winds 5 to 10 mph. .THURSDAY...Cooler. Mostly cloudy. Showers and isolated thunderstorms. Lows 34 to 39. Highs 50 to 55. Northwest winds 5 to 15 mph. .FRIDAY...Mostly cloudy. Scattered showers and isolated thunderstorms. Lows 39 to 44. Highs 58 to 63. Southwest winds 5 to 15 mph. .SATURDAY...Mostly cloudy. Scattered showers and isolated thunderstorms. Lows 38 to 43. Highs 63 to 68. .SUNDAY...Partly sunny. Scattered showers and isolated thunderstorms. Highs 61 to 66. $$ MTZ126-202215- Beartooth Ranger District Custer National Forest- 303 AM MDT Mon May 20 2024 .Today... * Sky/weather...........Cloudy. Snow likely in the morning, then snow showers and scattered thunderstorms in the afternoon. * Max temperature.......48-56 at 5000 feet...37-47 at 7000 feet. * 24 hr trend.........2 degrees cooler. * Min humidity..........47-57 percent at 5000 feet...57-67 percent at 7000 feet. * 24 hr trend.........Unchanged. * Wind (20 ft) * Slope/valley.........Northeast winds 5 to 15 mph. * Ridgetop.............Southeast 5 to 10 mph. * LAL...................3...9 to 15 strikes/15 min/cell. * CWR...................100 percent. * Haines index..........3. .TONIGHT... * Sky/weather...........Cloudy. Snow showers and scattered thunderstorms in the evening, then snow overnight. * Min temperature.......36-41 at 5000 feet...27-37 at 7000 feet. * 24 hr trend.........1 degree warmer. * Max humidity..........81-88 percent at 5000 feet...84-92 percent at 7000 feet. * 24 hr trend.........11 percent wetter. * Wind (20 ft) * Slope/valley.........Northwest winds 5 to 15 mph. * Ridgetop.............North 5 to 15 mph. * LAL...................3...9 to 15 strikes/15 min/cell. * CWR...................90 percent. .TUESDAY... * Sky/weather...........Cloudy. Snow in the morning, then snow showers and isolated thunderstorms in the afternoon. * Max temperature.......48-56 at 5000 feet...40-50 at 7000 feet. * 24 hr trend.........4 degrees warmer. * Min humidity..........40-50 percent at 5000 feet...45-55 percent at 7000 feet. * 24 hr trend.........16 percent drier. * Wind (20 ft) * Slope/valley.........Northwest winds 5 to 15 mph. * Ridgetop.............North 10 to 20 mph. * LAL...................2...1 to 8 strikes/15 min/cell. * CWR...................60 percent. * Haines index..........3. .Forecast days 3 through 7...... .TUESDAY NIGHT...Mostly cloudy. Scattered snow showers. Lows 36 to 41. Southwest winds 5 to 15 mph. .WEDNESDAY...Mostly cloudy. Numerous snow showers and isolated thunderstorms. Lows 38 to 43. Highs 56 to 64. Southwest winds 5 to 15 mph. .THURSDAY...Mostly cloudy. Snow showers and isolated thunderstorms. Lows 33 to 38. Highs 47 to 54. West winds 10 to 20 mph. .FRIDAY...Mostly cloudy. Scattered snow showers and isolated thunderstorms. Lows 39 to 44. Highs 52 to 61. West winds 10 to 20 mph. .SATURDAY...Mostly cloudy. Scattered showers, snow showers and isolated thunderstorms. Lows 40 to 45. Highs 60 to 68. .SUNDAY...Partly sunny. Scattered snow showers and isolated thunderstorms. Highs 57 to 64. $$ MTZ127-202215- Golden Valley County/Musselshell county- 303 AM MDT Mon May 20 2024 .Today... * Sky/weather...........Mostly cloudy. Scattered rain showers and isolated thunderstorms in the afternoon. * Max temperature.......52-57. * 24 hr trend.........7 degrees warmer. * Min humidity..........40-45 percent. * 24 hr trend.........9 percent drier. * Wind (20 ft) * Plains...............North winds 5 to 10 mph. * LAL...................2...1 to 8 strikes/15 min/cell. * CWR...................10 percent. * Haines index..........3. .TONIGHT... * Sky/weather...........Mostly cloudy. Scattered rain showers and isolated thunderstorms in the evening. * Min temperature.......38-43. * 24 hr trend.........4 degrees warmer. * Max humidity..........76-81 percent. * 24 hr trend.........5 percent wetter. * Wind (20 ft) * Plains...............Northwest winds 5 to 15 mph. * LAL...................2...1 to 8 strikes/15 min/cell. * CWR...................10 percent. .TUESDAY... * Sky/weather...........Partly sunny. Isolated rain showers in the morning, then scattered rain showers and isolated thunderstorms in the afternoon. * Max temperature.......55-60. * 24 hr trend.........3 degrees warmer. * Min humidity..........41-46 percent. * 24 hr trend.........1 percent wetter. * Wind (20 ft) * Plains...............North winds 5 to 15 mph. * LAL...................2...1 to 8 strikes/15 min/cell. * CWR...................20 percent. * Haines index..........3. .Forecast days 3 through 7...... .TUESDAY NIGHT...Partly cloudy. Isolated rain showers. Lows 40 to 45. Southwest winds 5 to 15 mph. .WEDNESDAY...Mostly cloudy. Scattered showers and isolated thunderstorms. Lows 41 to 46. Highs 61 to 66. Southwest winds 5 to 15 mph. .THURSDAY...Cooler. Mostly cloudy. Showers and isolated thunderstorms. Lows 37 to 42. Highs 50 to 55. Northwest winds 10 to 20 mph. .FRIDAY...Mostly cloudy. Scattered showers and isolated thunderstorms. Lows 42 to 47. Highs 58 to 63. West winds 5 to 15 mph. .SATURDAY...Mostly cloudy. Scattered showers and isolated thunderstorms. Lows 43 to 48. Highs 64 to 69. .SUNDAY...Partly sunny. Scattered showers. Highs 60 to 65. $$ MTZ128-202215- Yellowstone County- 303 AM MDT Mon May 20 2024 .Today... * Sky/weather...........Mostly cloudy. Isolated rain showers in the morning, then scattered rain showers and isolated thunderstorms in the afternoon. * Max temperature.......57-62. * 24 hr trend.........2 degrees warmer. * Min humidity..........39-44 percent. * 24 hr trend.........1 percent wetter. * Wind (20 ft) * Plains...............Northeast winds 5 to 10 mph. * LAL...................2...1 to 8 strikes/15 min/cell. * CWR...................30 percent. * Haines index..........3. .TONIGHT... * Sky/weather...........Mostly cloudy. Numerous rain showers and isolated thunderstorms in the evening, then scattered rain showers overnight. * Min temperature.......40-45. * 24 hr trend.........4 degrees warmer. * Max humidity..........81-86 percent. * 24 hr trend.........5 percent wetter. * Wind (20 ft) * Plains...............Northwest winds 5 to 15 mph. * LAL...................2...1 to 8 strikes/15 min/cell. * CWR...................40 percent. .TUESDAY... * 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 warmer. * Min humidity..........37-42 percent. * 24 hr trend.........2 percent drier. * Wind (20 ft) * Plains...............Northwest winds 5 to 10 mph. * LAL...................2...1 to 8 strikes/15 min/cell. * CWR...................30 percent. * Haines index..........3. .Forecast days 3 through 7...... .TUESDAY NIGHT...Partly cloudy. Isolated rain showers. Lows 40 to 45. Southwest winds 5 to 15 mph. .WEDNESDAY...Mostly cloudy. Scattered rain showers. Lows 43 to 48. Highs 66 to 71. South winds 5 to 15 mph. .THURSDAY...Cooler. Mostly cloudy. Showers and scattered thunderstorms. Lows 37 to 42. Highs 55 to 60. Northwest winds 10 to 20 mph. .FRIDAY...Mostly cloudy. Scattered showers and isolated thunderstorms. Lows 42 to 47. Highs 63 to 68. Southwest winds 5 to 15 mph. .SATURDAY...Mostly cloudy. Scattered showers and isolated thunderstorms. Lows 44 to 49. Highs 69 to 74. .SUNDAY...Partly sunny. Scattered showers. Highs 65 to 70. $$ MTZ129-202215- Crow Indian Reservation/Bighorn Canyon Rec Area- 303 AM MDT Mon May 20 2024 .Today... * Sky/weather...........Mostly cloudy. Isolated rain showers in the morning, then scattered rain showers and isolated thunderstorms in the afternoon. * Max temperature.......46-56 at 5000 feet...41-46 at 7000 feet. * 24 hr trend.........2 degrees cooler. * Min humidity..........49-59 percent at 5000 feet...58-63 percent at 7000 feet. * 24 hr trend.........3 percent wetter. * Wind (20 ft) * Slope/valley.........Northeast winds 5 to 10 mph. * Ridgetop.............South 5 to 10 mph. * LAL...................2...1 to 8 strikes/15 min/cell. * CWR...................20 percent. * Haines index..........2. .TONIGHT... * Sky/weather...........Cloudy with numerous rain showers and isolated thunderstorms. * Min temperature.......35-41 at 5000 feet...31-36 at 7000 feet. * 24 hr trend.........4 degrees warmer. * Max humidity..........85-92 percent at 5000 feet...89-94 percent at 7000 feet. * 24 hr trend.........11 percent wetter. * Wind (20 ft) * Slope/valley.........Southeast winds 5 to 15 mph in the evening shifting to the northwest overnight. * Ridgetop.............East 10 to 20 mph. * LAL...................2...1 to 8 strikes/15 min/cell. * CWR...................60 percent. .TUESDAY... * Sky/weather...........Mostly cloudy. Rain likely in the morning, then numerous rain showers and isolated thunderstorms in the afternoon. * Max temperature.......46-56 at 5000 feet...40-47 at 7000 feet. * 24 hr trend.........Unchanged. * Min humidity..........47-57 percent at 5000 feet...52-62 percent at 7000 feet. * 24 hr trend.........Unchanged. * Wind (20 ft) * Slope/valley.........Northwest winds 5 to 15 mph. * Ridgetop.............Northeast 10 to 20 mph. * LAL...................2...1 to 8 strikes/15 min/cell. * CWR...................50 percent. * Haines index..........2. .Forecast days 3 through 7...... .TUESDAY NIGHT...Partly cloudy. Isolated showers and thunderstorms. Lows 34 to 41. Southwest winds 5 to 10 mph. .WEDNESDAY...Mostly cloudy. Scattered rain showers. Lows 37 to 44. Highs 55 to 65. South winds 5 to 15 mph. .THURSDAY...Mostly cloudy. Showers and isolated thunderstorms. Lows 32 to 40. Highs 46 to 56. Northwest winds 5 to 15 mph with gusts to around 30 mph. .FRIDAY...Mostly cloudy. Scattered showers. Lows 39 to 46. Highs 51 to 61. Southwest winds 5 to 15 mph. .SATURDAY...Warmer. Mostly cloudy. Scattered showers and isolated thunderstorms. Lows 40 to 47. Highs 60 to 70. .SUNDAY...Partly sunny. Scattered showers. Highs 55 to 65. $$ MTZ130-202215- Northern Rosebud/Northern Treasure Counties- 303 AM MDT Mon May 20 2024 .Today... * Sky/weather...........Mostly cloudy. Isolated rain showers in the afternoon. * Max temperature.......60-65. * 24 hr trend.........2 degrees cooler. * Min humidity..........34-39 percent. * 24 hr trend.........3 percent wetter. * Wind (20 ft) * Plains...............Northwest winds 5 to 10 mph. * LAL...................1...no thunderstorms. * CWR...................Less than 10 percent. * Haines index..........3. .TONIGHT... * Sky/weather...........Mostly cloudy with isolated rain showers. * Min temperature.......40-45. * 24 hr trend.........4 degrees warmer. * Max humidity..........80-85 percent. * 24 hr trend.........8 percent drier. * Wind (20 ft) * Plains...............North winds 5 to 10 mph. * LAL...................1...no thunderstorms. * CWR...................10 percent. .TUESDAY... * Sky/weather...........Partly sunny. Isolated rain showers in the morning, then scattered rain showers in the afternoon. * Max temperature.......62-67. * 24 hr trend.........2 degrees warmer. * Min humidity..........35-40 percent. * 24 hr trend.........1 percent wetter. * Wind (20 ft) * Plains...............Northwest winds 5 to 15 mph. * LAL...................1...no thunderstorms. * CWR...................10 percent. * Haines index..........3. .Forecast days 3 through 7...... .TUESDAY NIGHT...Partly cloudy. Isolated rain showers. Lows 39 to 44. Southwest winds 5 to 10 mph. .WEDNESDAY...Mostly cloudy. Scattered rain showers. Lows 43 to 48. Highs 69 to 74. Southeast winds 5 to 10 mph. .THURSDAY...Mostly cloudy. Numerous showers and isolated thunderstorms. Lows 39 to 44. Highs 61 to 66. North winds 5 to 15 mph. .FRIDAY...Mostly cloudy. Scattered showers. Lows 43 to 48. Highs 63 to 68. West winds 5 to 15 mph. .SATURDAY...Mostly cloudy. Scattered showers and isolated thunderstorms. Lows 45 to 50. Highs 72 to 77. .SUNDAY...Partly sunny. Scattered showers. Highs 67 to 72. $$ MTZ131-202215- Northern Cheyenne Indian Reservation/Ashland Ranger District Custer Natl Forest- 303 AM MDT Mon May 20 2024 .Today... * Sky/weather...........Cloudy. Isolated rain showers in the afternoon. * Max temperature.......56-61. * 24 hr trend.........5 degrees cooler. * Min humidity..........41-46 percent. * 24 hr trend.........4 percent wetter. * Wind (20 ft) * Slope/valley.........Northeast winds 5 to 10 mph. * Ridgetop.............Southwest 5 to 10 mph. * LAL...................1...no thunderstorms. * CWR...................Less than 10 percent. * Haines index..........2. .TONIGHT... * Sky/weather...........Mostly cloudy. Scattered rain showers in the evening, then rain likely overnight. * Min temperature.......39-44. * 24 hr trend.........5 degrees warmer. * Max humidity..........82-87 percent. * 24 hr trend.........3 percent drier. * Wind (20 ft) * Slope/valley.........South winds 5 to 10 mph in the evening shifting to the northwest overnight. * Ridgetop.............East 5 to 15 mph. * LAL...................1...no thunderstorms. * CWR...................30 percent. .TUESDAY... * Sky/weather...........Cloudy. Rain likely in the morning, then numerous rain showers and isolated thunderstorms in the afternoon. * Max temperature.......55-60. * 24 hr trend.........1 degree cooler. * Min humidity..........43-48 percent. * 24 hr trend.........2 percent wetter. * Wind (20 ft) * Slope/valley.........North winds 5 to 15 mph. * Ridgetop.............Northeast 10 to 20 mph. * LAL...................2...1 to 8 strikes/15 min/cell. * CWR...................50 percent. * Haines index..........2. .Forecast days 3 through 7...... .TUESDAY NIGHT...Mostly cloudy. Isolated rain showers. Lows 35 to 40. Southwest winds 5 to 15 mph. .WEDNESDAY...Warmer. Mostly cloudy. Isolated rain showers. Lows 40 to 45. Highs 67 to 72. Southeast winds 5 to 10 mph. .THURSDAY...Mostly cloudy. Numerous showers and isolated thunderstorms. Lows 34 to 39. Highs 60 to 65. Northwest winds 5 to 15 mph. .FRIDAY...Partly cloudy. Scattered showers. Lows 39 to 44. Highs 61 to 66. West winds 5 to 15 mph. .SATURDAY...Partly cloudy. Scattered showers. Lows 42 to 47. Highs 70 to 75. .SUNDAY...Partly sunny. Scattered showers. Highs 65 to 70. $$ MTZ132-202215- Custer County- 303 AM MDT Mon May 20 2024 .Today... * Sky/weather...........Partly sunny. * Max temperature.......58-63. * 24 hr trend.........4 degrees cooler. * Min humidity..........35-40 percent. * 24 hr trend.........9 percent drier. * Wind (20 ft) * Plains...............North winds 5 to 10 mph. * LAL...................1...no thunderstorms. * CWR...................Zero. * Haines index..........3. .TONIGHT... * Sky/weather...........Mostly cloudy. * Min temperature.......41-46. * 24 hr trend.........5 degrees warmer. * Max humidity..........73-78 percent. * 24 hr trend.........18 percent drier. * Wind (20 ft) * Plains...............Northeast winds 5 to 10 mph. * LAL...................1...no thunderstorms. * CWR...................Zero. .TUESDAY... * Sky/weather...........Partly sunny with isolated rain showers. * Max temperature.......58-63. * 24 hr trend.........Unchanged. * Min humidity..........37-42 percent. * 24 hr trend.........2 percent wetter. * Wind (20 ft) * Plains...............Northwest winds 5 to 15 mph. * LAL...................1...no thunderstorms. * CWR...................10 percent. * Haines index..........2. .Forecast days 3 through 7...... .TUESDAY NIGHT...Partly cloudy. Lows 38 to 43. West winds 5 to 15 mph. .WEDNESDAY...Partly cloudy. Isolated rain showers. Lows 43 to 48. Highs 66 to 71. Southeast winds 5 to 15 mph. .THURSDAY...Mostly cloudy. Numerous showers and isolated thunderstorms. Lows 37 to 42. Highs 61 to 66. North winds 10 to 20 mph. .FRIDAY...Partly cloudy. Scattered showers. Lows 40 to 45. Highs 57 to 62. West winds 5 to 15 mph. .SATURDAY...Warmer. Partly cloudy. Scattered showers. Lows 46 to 51. Highs 68 to 73. .SUNDAY...Mostly sunny. Scattered showers. Highs 64 to 69. $$ MTZ133-202215- Sioux Ranger District Custer National Forest- 303 AM MDT Mon May 20 2024 .Today... * Sky/weather...........Mostly cloudy. Isolated rain showers in the afternoon. * Max temperature.......59-64. * 24 hr trend.........9 degrees cooler. * Min humidity..........37-42 percent. * 24 hr trend.........5 percent drier. * Wind (20 ft) * Plains...............Northwest winds 5 to 15 mph in the morning shifting to the northeast 5 to 10 mph in the afternoon. * LAL...................1...no thunderstorms. * CWR...................Less than 10 percent. * Haines index..........3. .TONIGHT... * Sky/weather...........Mostly cloudy. Isolated rain showers in the evening, then scattered rain showers overnight. * Min temperature.......41-46. * 24 hr trend.........3 degrees warmer. * Max humidity..........79-84 percent. * 24 hr trend.........8 percent drier. * Wind (20 ft) * Plains...............Southeast winds 5 to 15 mph in the evening shifting to the west 5 to 10 mph overnight. * LAL...................1...no thunderstorms. * CWR...................10 percent. .TUESDAY... * Sky/weather...........Mostly cloudy with scattered rain showers. * Max temperature.......59-64. * 24 hr trend.........Unchanged. * Min humidity..........42-47 percent. * 24 hr trend.........5 percent wetter. * Wind (20 ft) * Plains...............North winds 5 to 15 mph. * LAL...................1...no thunderstorms. * CWR...................20 percent. * Haines index..........2. .Forecast days 3 through 7...... .TUESDAY NIGHT...Mostly cloudy. Isolated rain showers. Lows 38 to 43. Northwest winds 5 to 15 mph. .WEDNESDAY...Partly cloudy. Isolated rain showers. Lows 43 to 48. Highs 68 to 73. South winds 5 to 15 mph. .THURSDAY...Mostly cloudy. Numerous showers and isolated thunderstorms. Lows 38 to 43. Highs 65 to 70. Northeast winds 10 to 20 mph with gusts to around 30 mph. .FRIDAY...Partly cloudy. Scattered showers. Lows 39 to 44. Highs 60 to 65. West winds 10 to 20 mph with gusts to around 30 mph. .SATURDAY...Warmer. Partly cloudy. Scattered showers. Lows 46 to 51. Highs 71 to 76. .SUNDAY...Mostly sunny. Scattered showers. Highs 67 to 72. $$ WYZ274-202215- Sheridan County- 303 AM MDT Mon May 20 2024 .Today... * Sky/weather...........Cloudy. Isolated rain showers in the morning, then numerous rain showers and isolated thunderstorms in the afternoon. * Max temperature.......54-59. * 24 hr trend.........2 degrees cooler. * Min humidity..........51-56 percent. * 24 hr trend.........6 percent wetter. * Wind (20 ft) * Slope/valley.........East winds 5 to 10 mph. * Ridgetop.............South 5 to 10 mph. * LAL...................2...1 to 8 strikes/15 min/cell. * CWR...................10 percent. * Haines index..........2. .TONIGHT... * Sky/weather...........Cloudy. Numerous rain showers and isolated thunderstorms in the evening, then rain overnight. * Min temperature.......36-41. * 24 hr trend.........2 degrees warmer. * Max humidity..........90-95 percent. * 24 hr trend.........11 percent wetter. * Wind (20 ft) * Slope/valley.........West winds 5 to 10 mph. * Ridgetop.............East 10 to 20 mph. * LAL...................2...1 to 8 strikes/15 min/cell. * CWR...................80 percent. .TUESDAY... * Sky/weather...........Cloudy. Rain in the morning, then rain showers and isolated thunderstorms in the afternoon. * Max temperature.......51-56. * 24 hr trend.........3 degrees cooler. * Min humidity..........57-62 percent. * 24 hr trend.........6 percent wetter. * Wind (20 ft) * Slope/valley.........Northwest winds 5 to 15 mph. * Ridgetop.............Northeast 15 to 25 mph. * LAL...................2...1 to 8 strikes/15 min/cell. * CWR...................80 percent. * Haines index..........3. .Forecast days 3 through 7...... .TUESDAY NIGHT...Mostly cloudy. Scattered showers and isolated thunderstorms. Lows 32 to 37. Southwest winds 5 to 10 mph. .WEDNESDAY...Warmer. Mostly cloudy. Isolated rain showers. Lows 37 to 42. Highs 65 to 70. South winds 5 to 10 mph. .THURSDAY...Mostly cloudy. Numerous showers and isolated thunderstorms. Lows 33 to 38. Highs 58 to 63. Northwest winds 5 to 15 mph. .FRIDAY...Partly cloudy. Scattered showers and isolated thunderstorms. Lows 36 to 41. Highs 61 to 66. West winds 5 to 15 mph. .SATURDAY...Partly cloudy. Scattered showers and isolated thunderstorms. Lows 41 to 46. Highs 70 to 75. .SUNDAY...Partly sunny. Scattered showers. Highs 65 to 70. $$ WYZ284-202215- Bighorn National Forest- 303 AM MDT Mon May 20 2024 .Today... * Sky/weather...........Cloudy. Scattered snow showers in the morning, then snow showers and isolated thunderstorms in the afternoon. * Max temperature.......38-43. * 24 hr trend.........11 degrees cooler. * Min humidity..........66-71 percent. * 24 hr trend.........35 percent wetter. * Wind (20 ft) * At Burgess Jct.......East winds 5 to 10 mph. * LAL...................2...1 to 8 strikes/15 min/cell. * CWR...................30 percent. * Haines index..........3. .TONIGHT... * Sky/weather...........Cloudy. Snow showers and isolated thunderstorms in the evening, then snow overnight. * Min temperature.......26-31. * 24 hr trend.........1 degree warmer. * Max humidity..........93-98 percent. * 24 hr trend.........7 percent wetter. * Wind (20 ft) * At Burgess Jct.......Northeast winds 5 to 10 mph. * LAL...................2...1 to 8 strikes/15 min/cell. * CWR...................90 percent. .TUESDAY... * Sky/weather...........Cloudy. Snow in the morning, then snow showers and isolated thunderstorms in the afternoon. * Max temperature.......37-42. * 24 hr trend.........1 degree cooler. * Min humidity..........65-70 percent. * 24 hr trend.........1 percent drier. * Wind (20 ft) * At Burgess Jct.......North winds 5 to 15 mph. * LAL...................2...1 to 8 strikes/15 min/cell. * CWR...................90 percent. * Haines index..........3. .Forecast days 3 through 7...... .TUESDAY NIGHT...Mostly cloudy. Scattered snow showers. Lows 23 to 28. Southwest winds 5 to 15 mph. .WEDNESDAY...Mostly cloudy. Scattered rain showers and snow showers. Lows 29 to 34. Highs 47 to 52. Southwest winds 5 to 15 mph. .THURSDAY...Mostly cloudy. Snow showers, showers and isolated thunderstorms. Lows 23 to 28. Highs 43 to 48. West winds 10 to 20 mph with gusts to around 30 mph. .FRIDAY...Mostly cloudy. Scattered snow showers and isolated thunderstorms. Lows 28 to 33. Highs 43 to 48. Southwest winds 5 to 15 mph. .SATURDAY...Mostly cloudy. Scattered showers and isolated thunderstorms. Lows 31 to 36. Highs 52 to 57. .SUNDAY...Partly sunny. Numerous showers and scattered snow showers. Highs 48 to 53. $$ weather.gov/billings