FNUS55 KGGW 231940 FWFGGW Fire Weather Planning Forecast for Northeast Montana National Weather Service Glasgow MT 140 PM MDT Sun Aug 23 2026 .DISCUSSION... Seasonably hot temperatures with a mix of wet and dry thunderstorms are expected through tomorrow. Strong to severe thunderstorms this afternoon will bring gusty, erratic winds and frequent lightning. Though min RH values in the 20-40% range and good overnight recovery will mitigate fire weather concerns. Warm and dry conditions are expected to resume Tuesday. MTZ134-241015- Northern Valley and Northern Phillips Counties- 140 PM MDT Sun Aug 23 2026 .TONIGHT... Sky/weather.........Mostly cloudy (50-60 percent) then becoming partly cloudy (25-35 percent). A chance of showers and a slight chance of thunderstorms in the evening. Some thunderstorms may be severe. Chance of thunder...20 percent. Min temperature.....57-62. Max humidity........62-67 percent. 20-foot winds.......West winds 10 to 20 mph decreasing to 5 to 15 mph in the late evening and overnight. CWR (> 0.10 inch)...10 percent. .MONDAY... Sky/weather.........Sunny (20-30 percent). Chance of thunder...0 percent. Max temperature.....80-85. Min humidity........29-34 percent. 20-foot winds.......West winds 10 to 15 mph increasing to 15 to 25 mph in the late morning and afternoon. CWR (> 0.10 inch)...Zero. .MONDAY NIGHT... Sky/weather.........Partly cloudy (40-50 percent). Chance of thunder...0 percent. Min temperature.....53-58. Max humidity........81-86 percent. 20-foot winds.......Northwest winds 15 to 25 mph decreasing to 5 to 15 mph after midnight. CWR (> 0.10 inch)...Zero. .TUESDAY... Sky/weather.........Partly cloudy (30-40 percent) then becoming sunny (5-15 percent). Chance of thunder...0 percent. Max temperature.....80-85. Min humidity........26-31 percent. 20-foot winds.......Northwest winds 5 to 15 mph. CWR (> 0.10 inch)...Zero. .Forecast days 3 through 7...... .WEDNESDAY...Mostly clear. Lows in the lower 50s. Highs in the mid 80s. Northeast winds 10 to 15 mph. .THURSDAY...Partly cloudy. Lows in the upper 50s. Highs around 90. Southeast winds 10 to 20 mph. .FRIDAY...Partly cloudy. A slight chance of showers. Lows in the upper 50s. Highs in the upper 80s. East winds 10 to 20 mph. .SATURDAY...Partly cloudy. A slight chance of showers. Lows in the mid 50s. Highs in the mid 80s. .SUNDAY...Partly cloudy. A slight chance of showers. Lows in the lower 50s. Highs in the upper 70s. $$ MTZ135-241015- The Little Rockies- 140 PM MDT Sun Aug 23 2026 .TONIGHT... Sky/weather.........A chance of showers in the evening. Chance of thunder...0 percent. Min temperature.....57-62. Max humidity........44-49 percent. 20-foot winds....... Lower elevation......West winds 5 to 15 mph. Ridge............West winds 10 to 20 mph. CWR (> 0.10 inch)...Less than 10 percent. .MONDAY... Sky/weather.........Sunny (10-20 percent). Chance of thunder...0 percent. Max temperature.....82-87 valleys and 72-77 ridges. Min humidity........26-31 percent. 20-foot winds....... Lower elevation......West winds 5 to 15 mph. Ridge............West winds 10 to 20 mph. CWR (> 0.10 inch)...Zero. .MONDAY NIGHT... Sky/weather.........Mostly clear (15-25 percent). Chance of thunder...0 percent. Min temperature.....57-62 valleys and 50-55 ridges. Max humidity........63-68 percent. 20-foot winds....... Lower elevation......Northwest winds 5 to 15 mph until early morning becoming downslope/downvalley 5-10 mph. Ridge............Northwest winds 5 to 15 mph. CWR (> 0.10 inch)...Zero. .TUESDAY... Sky/weather.........Partly cloudy (20-30 percent) then becoming sunny (0-10 percent). Chance of thunder...0 percent. Max temperature.....83-88 valleys and 73-78 ridges. Min humidity........26-31 percent. 20-foot winds....... Lower elevation......Upslope/upvalley 2-5 mph. Ridge............Northwest winds up to 5 mph. CWR (> 0.10 inch)...Zero. .Forecast days 3 through 7...... .WEDNESDAY...Mostly clear. Lows in the upper 50s. Highs in the mid 80s. East winds 5 to 15 mph. .THURSDAY...Partly cloudy. Lows in the lower 60s. Highs in the upper 80s. Southeast winds 5 to 15 mph. .FRIDAY...Partly cloudy. A slight chance of showers and thunderstorms. Lows in the mid 60s. Highs in the mid 80s. North winds 5 to 10 mph. .SATURDAY...Partly cloudy. A slight chance of showers. Lows in the lower 60s. Highs in the lower 80s. .SUNDAY...Partly cloudy. A chance of showers. Lows in the mid 50s. Highs in the mid 70s. $$ MTZ136-241015- The Lower Missouri River Breaks including the Charles M Russell National Wildlife Refuge- 140 PM MDT Sun Aug 23 2026 .TONIGHT... Sky/weather.........Partly cloudy (20-30 percent). Showers likely and a slight chance of thunderstorms in the evening. Some thunderstorms may be severe. Chance of thunder...20 percent. Min temperature.....61-66. Max humidity........55-60 percent. 20-foot winds....... Lower elevation......West winds 5 to 15 mph. Ridge............West winds 10 to 20 mph decreasing to 5 to 15 mph in the late evening and overnight. CWR (> 0.10 inch)...10 percent. .MONDAY... Sky/weather.........Sunny (20-30 percent). Chance of thunder...0 percent. Max temperature.....81-86. Min humidity........23-28 percent. 20-foot winds....... Lower elevation......West winds 10 to 20 mph. Ridge............West winds 10 to 20 mph. CWR (> 0.10 inch)...Zero. .MONDAY NIGHT... Sky/weather.........Mostly clear (20-30 percent). Chance of thunder...0 percent. Min temperature.....56-61. Max humidity........67-72 percent. 20-foot winds....... Lower elevation......Northwest winds 5 to 10 mph. Ridge............Northwest winds 10 to 15 mph. CWR (> 0.10 inch)...Zero. .TUESDAY... Sky/weather.........Partly cloudy (30-40 percent) then becoming sunny (0-10 percent). Chance of thunder...0 percent. Max temperature.....80-85. Min humidity........26-31 percent. 20-foot winds....... Lower elevation......Northwest winds 5 to 15 mph. Ridge............Northwest winds 5 to 15 mph. CWR (> 0.10 inch)...Zero. .Forecast days 3 through 7...... .WEDNESDAY...Mostly clear. Lows in the upper 50s. Highs in the mid 80s. East winds 5 to 10 mph. .THURSDAY...Partly cloudy. A slight chance of showers. Lows in the lower 60s. Highs in the lower 90s. Southeast winds 5 to 15 mph. .FRIDAY...Partly cloudy. A slight chance of showers. Lows in the mid 60s. Highs in the upper 80s. East winds 5 to 15 mph. .SATURDAY...Partly cloudy. A slight chance of showers. Lows in the lower 60s. Highs in the mid 80s. .SUNDAY...Partly cloudy. A slight chance of showers. Lows in the upper 50s. Highs in the upper 70s. $$ MTZ137-241015- Southern Petroleum and Southern Garfield Counties- 140 PM MDT Sun Aug 23 2026 .TONIGHT... Sky/weather.........Mostly cloudy (50-60 percent) then becoming partly cloudy (25-35 percent). A slight chance of showers and thunderstorms in the evening. Some thunderstorms may be severe. Chance of thunder...20 percent. Min temperature.....59-64. Max humidity........59-64 percent. 20-foot winds....... Lower elevation......West winds 5 to 15 mph. Ridge............Northwest winds 10 to 20 mph becoming west 5 to 15 mph in the late evening and overnight. CWR (> 0.10 inch)...20 percent. .MONDAY... Sky/weather.........Partly cloudy (25-35 percent) then becoming sunny (10-20 percent). Chance of thunder...0 percent. Max temperature.....81-86. Min humidity........20-25 percent. 20-foot winds....... Lower elevation......Northwest winds 10 to 20 mph. Ridge............Northwest winds 10 to 20 mph. CWR (> 0.10 inch)...Zero. .MONDAY NIGHT... Sky/weather.........Partly cloudy (30-40 percent). Chance of thunder...0 percent. Min temperature.....54-59. Max humidity........66-71 percent. 20-foot winds....... Lower elevation......Northwest winds 5 to 15 mph in the evening becoming downslope/downvalley 2-5 mph. Ridge............Northwest winds 5 to 10 mph. CWR (> 0.10 inch)...Zero. .TUESDAY... Sky/weather.........Partly cloudy (30-40 percent) then becoming sunny (5-15 percent). Chance of thunder...0 percent. Max temperature.....80-85. Min humidity........26-31 percent. 20-foot winds....... Lower elevation......Northwest winds 5 to 15 mph. Ridge............Northwest winds 5 to 15 mph. CWR (> 0.10 inch)...Zero. .Forecast days 3 through 7...... .WEDNESDAY...Mostly clear. Lows in the mid 50s. Highs in the upper 80s. East winds 10 to 15 mph. .THURSDAY...Partly cloudy. Lows around 60. Highs in the lower 90s. Southeast winds 5 to 15 mph. .FRIDAY...Partly cloudy. A slight chance of showers. Lows in the lower 60s. Highs in the upper 80s. Southeast winds 5 to 15 mph. .SATURDAY...Partly cloudy. A slight chance of showers. Lows in the upper 50s. Highs in the mid 80s. .SUNDAY...Partly cloudy. A slight chance of showers. Lows in the mid 50s. Highs in the upper 70s. $$ MTZ120-241015- Fort Peck Reservation and Daniels/Roosevelt/Sheridan Counties- 140 PM MDT Sun Aug 23 2026 .TONIGHT... Sky/weather.........Mostly cloudy (50-60 percent) then becoming partly cloudy (40-50 percent). A slight chance of showers and thunderstorms in the evening, then a slight chance of showers after midnight. Chance of thunder...20 percent. Min temperature.....58-63. Max humidity........83-88 percent. 20-foot winds.......South winds 5 to 15 mph becoming west after midnight. CWR (> 0.10 inch)...10 percent. .MONDAY... Sky/weather.........Partly cloudy (30-40 percent) then becoming sunny (20-30 percent). Chance of thunder...0 percent. Max temperature.....81-86. Min humidity........29-34 percent. 20-foot winds.......West winds 20 to 30 mph. CWR (> 0.10 inch)...Less than 10 percent. .MONDAY NIGHT... Sky/weather.........Partly cloudy (40-50 percent). Chance of thunder...0 percent. Min temperature.....55-60. Max humidity........81-86 percent. 20-foot winds.......West winds 15 to 25 mph. CWR (> 0.10 inch)...Zero. .TUESDAY... Sky/weather.........Mostly cloudy (50-60 percent) then becoming sunny (20-30 percent). Chance of thunder...0 percent. Max temperature.....79-84. Min humidity........32-37 percent. 20-foot winds.......Northwest winds 15 to 25 mph. CWR (> 0.10 inch)...Zero. .Forecast days 3 through 7...... .WEDNESDAY...Mostly clear. Lows in the lower 50s. Highs in the lower 80s. North winds 10 to 20 mph. .THURSDAY...Partly cloudy. Lows in the mid 50s. Highs in the mid 80s. East winds 5 to 15 mph. .FRIDAY...Partly cloudy. A chance of showers and a slight chance of thunderstorms. Lows in the upper 50s. Highs in the mid 80s. Southeast winds 10 to 20 mph. .SATURDAY...Partly cloudy. A slight chance of showers and thunderstorms. Lows in the mid 50s. Highs in the mid 80s. .SUNDAY...Partly cloudy. A chance of showers. Lows in the mid 50s. Highs in the upper 70s. $$ MTZ122-241015- Dawson/McCone/Prairie/Richland/Wibaux Counties- 140 PM MDT Sun Aug 23 2026 .TONIGHT... Sky/weather.........Partly cloudy (40-50 percent). A slight chance of showers and thunderstorms in the evening. Chance of thunder...20 percent. Min temperature.....60-65. Max humidity........73-78 percent. 20-foot winds.......Northwest winds 5 to 15 mph becoming west after midnight. CWR (> 0.10 inch)...Less than 10 percent. .MONDAY... Sky/weather.........Sunny (20-30 percent). Chance of thunder...0 percent. Max temperature.....82-87. Min humidity........23-28 percent. 20-foot winds.......West winds 10 to 20 mph. CWR (> 0.10 inch)...Less than 10 percent. .MONDAY NIGHT... Sky/weather.........Partly cloudy (25-35 percent). Chance of thunder...0 percent. Min temperature.....55-60. Max humidity........75-80 percent. 20-foot winds.......West winds 10 to 20 mph decreasing to 5 to 15 mph after midnight. CWR (> 0.10 inch)...Zero. .TUESDAY... Sky/weather.........Partly cloudy (30-40 percent) then becoming sunny (10-20 percent). Chance of thunder...0 percent. Max temperature.....80-85. Min humidity........29-34 percent. 20-foot winds.......Northwest winds 10 to 20 mph. CWR (> 0.10 inch)...Zero. .Forecast days 3 through 7...... .WEDNESDAY...Mostly clear. Lows in the lower 50s. Highs in the lower 80s. North winds 10 to 15 mph. .THURSDAY...Partly cloudy. Lows in the mid 50s. Highs in the upper 80s. East winds 5 to 15 mph. .FRIDAY...Partly cloudy. A chance of showers and a slight chance of thunderstorms. Lows in the lower 60s. Highs in the upper 80s. Southeast winds 5 to 15 mph. .SATURDAY...Partly cloudy. A slight chance of showers and thunderstorms. Lows in the upper 50s. Highs in the mid 80s. .SUNDAY...Partly cloudy. A slight chance of showers and thunderstorms. Lows in the mid 50s. Highs around 80. $$ weather.gov/glasgow