FNUS55 KGGW 221953 FWFGGW Fire Weather Planning Forecast for Northeast Montana National Weather Service Glasgow MT 153 PM MDT Sat Aug 22 2026 .DISCUSSION... Seasonably hot temperatures with a mix of wet and dry thunderstorms are expected through Monday. Two rounds of showers and thunderstorms begin this evening with steadier showers will see wetting rains. Strong to severe thunderstorms in the afternoon tomorrow will bring gusty, erratic winds and frequent lightning. Areas that didn't see rain the night before may be at a higher risk for lightning starts as fuels will continue to dry out with high temperatures and stronger winds tomorrow. 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. MTZ134-231015- Northern Valley and Northern Phillips Counties- 153 PM MDT Sat Aug 22 2026 .TONIGHT... Sky/weather.........Mostly cloudy (70-80 percent). A chance of showers and a slight chance of thunderstorms after midnight. Chance of thunder...20 percent. Min temperature.....63-68. Max humidity........67-72 percent. 20-foot winds.......Southeast winds 15 to 25 mph. CWR (> 0.10 inch)...10 percent. .SUNDAY... Sky/weather.........Mostly cloudy (50-60 percent). A slight chance of showers and thunderstorms in the afternoon. Chance of thunder...20 percent. Max temperature.....90-95. Min humidity........28-33 percent. 20-foot winds.......Southeast winds 5 to 15 mph becoming southwest in the afternoon. CWR (> 0.10 inch)...Less than 10 percent. .SUNDAY NIGHT... Sky/weather.........Mostly cloudy (55-65 percent) then becoming partly cloudy (25-35 percent). A chance of showers and thunderstorms in the evening. Chance of thunder...50 percent. Min temperature.....57-62. Max humidity........66-71 percent. 20-foot winds.......West winds 5 to 15 mph. CWR (> 0.10 inch)...10 percent. .MONDAY... Sky/weather.........Partly cloudy (25-35 percent) then becoming sunny (5-15 percent). Chance of thunder...0 percent. Max temperature.....80-85. Min humidity........28-33 percent. 20-foot winds.......West winds 15 to 25 mph. CWR (> 0.10 inch)...Zero. .Forecast days 3 through 7...... .TUESDAY...Mostly clear. Lows in the mid 50s. Highs in the lower 80s. Northwest winds 10 to 20 mph. .WEDNESDAY...Mostly clear. Lows in the lower 50s. Highs in the mid 80s. East winds 10 to 15 mph. .THURSDAY...Partly cloudy. A slight chance of showers. Lows in the upper 50s. Highs around 90. Southeast winds 5 to 15 mph. .FRIDAY...Partly cloudy. A slight chance of showers. Lows in the upper 50s. Highs in the mid 80s. .SATURDAY...Partly cloudy. Lows in the mid 50s. Highs in the mid 80s. $$ MTZ135-231015- The Little Rockies- 153 PM MDT Sat Aug 22 2026 .TONIGHT... Sky/weather.........Mostly cloudy (70-80 percent). Chance of thunder...0 percent. Min temperature.....68-73 valleys and 62-67 ridges. Max humidity........58-63 percent. 20-foot winds....... Lower elevation......Southeast winds 5 to 15 mph becoming variable less than 5 mph late in the night. Ridge............Southeast winds 10 to 20 mph becoming west 5 to 10 mph late in the night. CWR (> 0.10 inch)...Less than 10 percent. .SUNDAY... Sky/weather.........A chance of showers and a slight chance of thunderstorms in the afternoon. Chance of thunder...20 percent. Max temperature.....94-99 valleys and 83-88 ridges. Min humidity........23-28 percent. 20-foot winds....... Lower elevation......West winds 5 to 15 mph.Ridge............West winds 5 to 15 mph. CWR (> 0.10 inch)...10 percent. .SUNDAY NIGHT... Sky/weather.........Mostly cloudy (50-60 percent) then becoming mostly clear (15-25 percent). A chance of showers and a slight chance of thunderstorms in the evening. Chance of thunder...20 percent. Min temperature.....58-63. Max humidity........45-50 percent. 20-foot winds....... Lower elevation......West winds 10 to 15 mph. Ridge............West winds 10 to 15 mph. CWR (> 0.10 inch)...10 percent. .MONDAY... Sky/weather.........Sunny (15-25 percent). Chance of thunder...0 percent. Max temperature.....82-87 valleys and 72-77 ridges. Min humidity........25-30 percent. 20-foot winds....... Lower elevation......West winds 5 to 15 mph. Ridge............West winds 5 to 15 mph. CWR (> 0.10 inch)...Zero. .Forecast days 3 through 7...... .TUESDAY...Mostly clear. Lows in the upper 50s. Highs in the lower 80s. Northwest winds 10 to 15 mph. .WEDNESDAY...Mostly clear. Lows in the upper 50s. Highs in the mid 80s. East winds 5 to 15 mph. .THURSDAY...Partly cloudy. A slight chance of showers. Lows in the lower 60s. Highs in the upper 80s. Southeast winds 5 to 15 mph. .FRIDAY...Partly cloudy. A slight chance of showers. Lows in the lower 60s. Highs in the lower 80s. .SATURDAY...Partly cloudy. Lows in the upper 50s. Highs in the lower 80s. $$ MTZ136-231015- The Lower Missouri River Breaks including the Charles M Russell National Wildlife Refuge- 153 PM MDT Sat Aug 22 2026 .TONIGHT... Sky/weather.........Mostly cloudy (60-70 percent). A slight chance of showers and thunderstorms after midnight. Chance of thunder...20 percent. Min temperature.....66-71. Max humidity........68-73 percent. 20-foot winds....... Lower elevation......Southeast winds 10 to 20 mph becoming south 5 to 10 mph late in the night. Ridge............Southeast winds 10 to 20 mph. CWR (> 0.10 inch)...10 percent. .SUNDAY... Chance of thunder...0 percent. Max temperature.....92-97. Min humidity........26-31 percent. 20-foot winds....... Lower elevation......Upslope/upvalley 2-5 mph. Ridge............West winds 5 to 10 mph. CWR (> 0.10 inch)...10 percent. .SUNDAY NIGHT... Sky/weather.........Mostly cloudy (60-70 percent) then becoming partly cloudy (25-35 percent). A chance of showers and a slight chance of thunderstorms in the evening. Chance of thunder...20 percent. Min temperature.....61-66. Max humidity........57-62 percent. 20-foot winds....... Lower elevation......West winds 10 to 15 mph. Ridge............West winds 10 to 15 mph. CWR (> 0.10 inch)...10 percent. .MONDAY... Sky/weather.........Partly cloudy (20-30 percent) then becoming sunny (0-10 percent). Chance of thunder...0 percent. Max temperature.....81-86. Min humidity........23-28 percent. 20-foot winds....... Lower elevation......Northwest winds 10 to 20 mph. Ridge............Northwest winds 10 to 20 mph. CWR (> 0.10 inch)...Zero. .Forecast days 3 through 7...... .TUESDAY...Mostly clear. Lows in the upper 50s. Highs in the lower 80s. Northwest winds 10 to 20 mph. .WEDNESDAY...Mostly clear. Lows in the upper 50s. Highs in the upper 80s. East winds 10 to 15 mph. .THURSDAY...Partly cloudy. 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 lower 60s. Highs in the mid 80s. .SATURDAY...Partly cloudy. Lows around 60. Highs in the mid 80s. $$ MTZ137-231015- Southern Petroleum and Southern Garfield Counties- 153 PM MDT SatAug 22 2026 .TONIGHT... Sky/weather.........Mostly cloudy (65-75 percent). A slight chance of showers in the evening, then a slight chance of showers and thunderstorms after midnight. Chance of thunder...20 percent. Min temperature.....65-70. Max humidity........69-74 percent. 20-foot winds....... Lower elevation......Southeast winds 10 to 20 mph. Ridge............Southeast winds 10 to 20 mph becoming south after midnight. CWR (> 0.10 inch)...10 percent. .SUNDAY... Sky/weather.........Mostly cloudy (45-55 percent). A chance of showers and a slight chance of thunderstorms in the afternoon. Chance of thunder...20 percent. Max temperature.....92-97. Min humidity........22-27 percent. 20-foot winds....... Lower elevation......Upslope/upvalley 5-10 mph. Ridge............West winds 5 to 10 mph. CWR (> 0.10 inch)...10 percent. .SUNDAY NIGHT... Sky/weather.........Mostly cloudy (60-70 percent) then becoming partly cloudy (25-35 percent). A chance of showers and a slight chance of thunderstorms in the evening. Chance of thunder...20 percent. Min temperature.....59-64. Max humidity........58-63 percent. 20-foot winds....... Lower elevation......Northwest winds 10 to 15 mph. Ridge............Northwest winds 10 to 15 mph. CWR (> 0.10 inch)...10 percent. .MONDAY... Sky/weather.........Partly cloudy (25-35 percent) then becoming sunny (0-10 percent). Chance of thunder...0 percent. Max temperature.....81-86. Min humidity........20-25 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...... .TUESDAY...Mostly clear. Lows in the mid 50s. Highs in the lower 80s. Northwest winds 10 to 15 mph. .WEDNESDAY...Mostly clear. Lows in the upper 50s. Highs in the upper 80s. East winds 10 to 15 mph. .THURSDAY...Partly cloudy. 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 lower 60s. Highs in the mid 80s. .SATURDAY...Partly cloudy. Lows in the upper 50s. Highs in the mid 80s. $$ MTZ120-231015- Fort Peck Reservation and Daniels/Roosevelt/Sheridan Counties- 153 PM MDT Sat Aug 22 2026 .TONIGHT... Sky/weather.........Mostly cloudy (60-70 percent). A chance of showers and a slight chance of thunderstorms after midnight. Chance of thunder...20 percent. Min temperature.....61-66. Max humidity........64-69 percent. 20-foot winds.......Southeast winds 10 to 20 mph. CWR (> 0.10 inch)...10 percent. .SUNDAY... Sky/weather.........Mostly cloudy (50-60 percent). A chance of showers and thunderstorms in the morning, then a slight chance of showers and thunderstorms in the afternoon. Chance of thunder...50 percent. Max temperature.....86-91. Min humidity........44-49 percent. 20-foot winds.......Southeast winds 10 to 20 mph. CWR (> 0.10 inch)...20 percent. .SUNDAY NIGHT... Sky/weather.........Mostly cloudy (55-65 percent). A chance of showers and a slight chance of thunderstorms in the evening, then a slight chance of showers after midnight. Chance of thunder...20 percent. Min temperature.....57-62. Max humidity........86-91 percent. 20-foot winds.......Southeast winds 5 to 15 mph becoming west 5 to 10 mph early in the morning. CWR (> 0.10 inch)...20 percent. .MONDAY... Sky/weather.........Partly cloudy (40-50 percent) then becoming sunny (5-15 percent). Chance of thunder...0 percent. Max temperature.....80-85. Min humidity........29-34 percent. 20-foot winds.......West winds 5 to 15 mph increasing to 15 to 25 mph in the afternoon. CWR (> 0.10 inch)...Zero. .Forecast days 3 through 7...... .TUESDAY...Mostly clear. Lows in the mid 50s. Highs in the lower 80s. Northwest winds 15 to 25 mph. .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 upper 80s. Southeast 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. .SATURDAY...Partly cloudy. A slight chance of showers. Lows in the mid 50s. Highs in the mid 80s. $$ MTZ122-231015- Dawson/McCone/Prairie/Richland/Wibaux Counties- 153 PM MDT Sat Aug 22 2026 .TONIGHT... Sky/weather.........Mostly cloudy (55-65 percent). A chance of showers and a slight chance of thunderstorms after midnight. Chance of thunder...20 percent. Min temperature.....63-68. Max humidity........68-73 percent. 20-foot winds.......Southeast winds 10 to 20 mph. CWR (> 0.10 inch)...10 percent. .SUNDAY... Sky/weather.........Mostly cloudy (45-55 percent). A chance of showers and thunderstorms in the morning. Chance of thunder...40 percent. Max temperature.....89-94. Min humidity........37-42 percent. 20-foot winds.......Southeast winds 10 to 20 mph becoming south 5 to 15 mph late in the afternoon. CWR (> 0.10 inch)...10 percent. .SUNDAY NIGHT... Sky/weather.........Mostly cloudy (55-65 percent) then becoming partly cloudy (40-50 percent). A chance of showers and a slight chance of thunderstorms in the evening. Chance of thunder...20 percent. Min temperature.....60-65. Max humidity........77-82 percent. 20-foot winds.......East winds 5 to 10 mph becoming west after midnight. CWR (> 0.10 inch)...20 percent. .MONDAY... Sky/weather.........Partly cloudy (45-55 percent) then becoming sunny (5-15 percent). Chance of thunder...0 percent. Max temperature.....82-87. Min humidity........23-28 percent. 20-foot winds.......Northwest winds 10 to 20 mph. CWR (> 0.10 inch)...Zero. .Forecast days 3 through 7...... .TUESDAY...Mostly clear. Lows in the mid 50s. Highs in the lower 80s. Northwest winds 10 to 20 mph. .WEDNESDAY...Mostly clear. Lows in the lower 50s. Highs in the mid 80s. Northeast winds 10 to 15 mph. .THURSDAY...Partly cloudy. A slight chance of showers. Lows in the upper 50s. Highs around 90. East winds 5 to 15 mph. .FRIDAY...Partly cloudy. A slight chance of showers and thunderstorms. Lows around 60. Highs in the upper 80s. .SATURDAY...Partly cloudy. A slight chance of showers. Lows in the upper 50s. Highs in the upper 80s. $$ weather.gov/glasgow