FNUS55 KGGW 210638 FWFGGW Fire Weather Planning Forecast for Northeast Montana National Weather Service Glasgow MT 1238 AM MDT Sun Jun 21 2026 .DISCUSSION... An upper trough will bring several rounds of showers and thunderstorms to the area for today. Lingering showers and cooler temperatures will follow Monday into Tuesday before drier weather and warmer temperatures emerge late week. The next system will arrive with thunderstorm chances by Friday into the weekend. This overall active weather pattern will keep fire weather concerns low over the next several days. MTZ134-212215- Northern Valley and Northern Phillips Counties- 1238 AM MDT Sun Jun 21 2026 .TODAY... Sky/weather.........Mostly cloudy (50-60 percent). A chance of showers and a slight chance of thunderstorms in the morning, then a slight chance of showers and thunderstorms in the afternoon. Chance of thunder...20 percent. Max temperature.....71-76. Min humidity........43-48 percent. 20-foot winds.......Southeast winds 10 to 20 mph becoming west in the afternoon. CWR (> 0.10 inch)...10 percent. .TONIGHT... Sky/weather.........Partly cloudy (40-50 percent). A slight chance of showers after midnight. Chance of thunder...0 percent. Min temperature.....46-51. Max humidity........89-94 percent. 20-foot winds.......North winds 5 to 15 mph. CWR (> 0.10 inch)...10 percent. .MONDAY... Sky/weather.........Mostly cloudy (70-80 percent). A chance of showers in the morning, then a chance of showers and a slight chance of thunderstorms in the afternoon. Chance of thunder...20 percent. Max temperature.....65-70. Min humidity........54-59 percent. 20-foot winds.......Northwest winds 5 to 15 mph increasing to west 15 to 25 mph in the afternoon. CWR (> 0.10 inch)...20 percent. .Forecast days 3 through 7...... .TUESDAY...Partly cloudy. A slight chance of showers. Lows in the upper 40s. Highs in the upper 60s. Northwest winds 15 to 25 mph. .WEDNESDAY...Partly cloudy. Lows in the mid 40s. Highs in the lower 70s. Northeast winds 10 to 15 mph. .THURSDAY...Partly cloudy. Lows in the upper 40s. Highs in the upper 70s. Southeast winds 10 to 20 mph. .FRIDAY...Mostly cloudy. A chance of showers and a slight chance of thunderstorms. Lows in the mid 50s. Highs in the lower 80s. .SATURDAY...Mostly cloudy. A chance of showers and thunderstorms. Lows in the mid 50s. Highs in the mid 70s. $$ MTZ135-212215- The Little Rockies- 1238 AM MDT Sun Jun 21 2026 .TODAY... Sky/weather.........Partly cloudy (25-35 percent) then becoming sunny (10-20 percent). Chance of thunder...0 percent. Max temperature.....76-81 valleys and 65-70 ridges. Min humidity........27-32 percent valleys and 37-42 percent ridges. 20-foot winds....... Lower elevation......Northwest winds 5 to 15 mph. Ridge............Northwest winds 10 to 20 mph. CWR (> 0.10 inch)...Less than 10 percent. .TONIGHT... Sky/weather.........Partly cloudy (30-40 percent). A chance of showers and a slight chance of thunderstorms after midnight. Chance of thunder...20 percent. Min temperature.....53-58 valleys and 44-49 ridges. Max humidity........72-77 percent. 20-foot winds....... Lower elevation......Northwest winds 5 to 10 mph. Ridge............North winds 5 to 10 mph. CWR (> 0.10 inch)...10 percent. .MONDAY... Sky/weather.........A chance of showers in the morning, then a chance of showers and a slight chance of thunderstorms in the afternoon. Chance of thunder...20 percent. Max temperature.....68-73 valleys and 58-63 ridges. Min humidity........40-45 percent valleys and 54-59 percent ridges. 20-foot winds....... Lower elevation......Northwest winds 5 to 15 mph in the morning. Ridge............Northwest winds 5 to 15 mph. CWR (> 0.10 inch)...10 percent. .Forecast days 3 through 7...... .TUESDAY...Mostly clear. Lows in the upper 40s. Highs in the upper 60s. Northwest winds 10 to 20 mph. .WEDNESDAY...Partly cloudy. Lows in the upper 40s. Highs in the lower 70s. East winds 5 to 10 mph. .THURSDAY...Partly cloudy. A slight chance of showers and thunderstorms. Lows in the lower 50s. Highs in the upper 70s. Southeast winds 5 to 15 mph. .FRIDAY...Mostly cloudy. A chance of showers and a slight chance of thunderstorms. Lows in the upper 50s. Highs in the lower 80s. .SATURDAY...Mostly cloudy. A chance of showers and thunderstorms. Lows in the upper 50s. Highs in the lower 70s. $$ MTZ136-212215- The Lower Missouri River Breaks including the Charles M Russell National Wildlife Refuge- 1238 AM MDT Sun Jun 21 2026 .TODAY... Sky/weather.........Partly cloudy (45-55 percent). A chance of showers and a slight chance of thunderstorms in the morning, then a slight chance of showers and thunderstorms in the afternoon. Chance of thunder...20 percent. Max temperature.....74-79. Min humidity........41-46 percent. 20-foot winds....... Lower elevation......Northwest winds 5 to 15 mph. Ridge............Northwest winds 5 to 15 mph becoming 10 to 15 mph late in the afternoon. CWR (> 0.10 inch)...10 percent. .TONIGHT... Sky/weather.........Partly cloudy (30-40 percent) then becoming mostly cloudy (45-55 percent). A chance of showers and a slight chance of thunderstorms after midnight. Chance of thunder...20 percent. Min temperature.....50-55. Max humidity........81-86 percent. 20-foot winds....... Lower elevation......North winds 5 to 10 mph. Ridge............North winds 5 to 10 mph. CWR (> 0.10 inch)...10 percent. .MONDAY... Sky/weather.........A chance of showers and a slight chance of thunderstorms. Chance of thunder...20 percent. Max temperature.....66-71. Min humidity........52-57 percent. 20-foot winds....... Lower elevation......Northwest winds 5 to 15 mph. Ridge............Northwest winds 5 to 15 mph. CWR (> 0.10 inch)...60 percent. .Forecast days 3 through 7...... .TUESDAY...Partly cloudy. Lows in the upper 40s. Highs around 70. Northwest winds 5 to 15 mph. .WEDNESDAY...Partly cloudy. Lows in the upper 40s. Highs in the mid 70s. East winds 10 to 15 mph. .THURSDAY...Partly cloudy. A slight chance of showers. Lows in the lower 50s. Highs around 80. Southeast winds 5 to 15 mph. .FRIDAY...Mostly cloudy. A chance of showers and a slight chance of thunderstorms. Lows in the upper 50s. Highs in the mid 80s. .SATURDAY...Mostly cloudy. A chance of showers and thunderstorms. Lows in the upper 50s. Highs in the mid 70s. $$ MTZ137-212215- Southern Petroleum and Southern Garfield Counties- 1238 AM MDT Sun Jun 21 2026 .TODAY... Sky/weather.........Partly cloudy (45-55 percent). A chance of showers and a slight chance of thunderstorms in the morning, then a slight chance of showers and thunderstorms in the afternoon. Chance of thunder...20 percent. Max temperature.....74-79. Min humidity........41-46 percent. 20-foot winds....... Lower elevation......Southwest winds 5 to 15 mph becoming northwest in the afternoon. Ridge............Northwest winds 10 to 20 mph. CWR (> 0.10 inch)...Lessthan 10 percent. .TONIGHT... Sky/weather.........Partly cloudy (40-50 percent) then becoming mostly cloudy (60-70 percent). A chance of showers and a slight chance of thunderstorms after midnight. Chance of thunder...20 percent. Min temperature.....48-53. Max humidity........87-92 percent. 20-foot winds....... Lower elevation......North winds 5 to 10 mph early in the evening becoming downslope/downvalley 2-5 mph, then becoming variable less than 5 mph after midnight. Ridge............North winds 5 to 15 mph becoming northeast 5 to 10 mph in the late evening and overnight. CWR (> 0.10 inch)...10 percent. .MONDAY... Sky/weather.........Showers and a slight chance of thunderstorms in the morning, then a chance of showers and a slight chance of thunderstorms in the afternoon. Chance of thunder...20 percent. Max temperature.....66-71. Min humidity........53-58 percent. 20-foot winds....... Lower elevation......North winds 5 to 15 mph. Ridge............North winds 5 to 15 mph. CWR (> 0.10 inch)...70 percent. .Forecast days 3 through 7...... .TUESDAY...Mostly clear. Lows in the upper 40s. Highs in the lower 70s. Northwest winds 5 to 15 mph. .WEDNESDAY...Partly cloudy. Lows in the mid 40s. Highs in the mid 70s. East winds 10 to 15 mph. .THURSDAY...Partly cloudy. A slight chance of showers and thunderstorms. Lows around 50. Highs around 80. Southeast winds 5 to 15 mph. .FRIDAY...Mostly cloudy. A slight chance of showers and thunderstorms. Lows in the mid 50s. Highs in the mid 80s. .SATURDAY...Mostly cloudy. Showers likely and a chance of thunderstorms. Lows in the mid 50s. Highs in the mid 70s. $$ MTZ120-212215- Fort Peck Reservation and Daniels/Roosevelt/Sheridan Counties- 1238 AM MDT Sun Jun 21 2026 .TODAY... Sky/weather.........Showers likely and a slight chance of thunderstorms in the morning, then showers and a chance of thunderstorms in the afternoon. Patchy fog in the afternoon. Chance of thunder...50 percent. Max temperature.....65-70. Min humidity........68-73 percent. 20-foot winds.......Southeast winds 10 to 20 mph. CWR (> 0.10 inch)...90 percent. .TONIGHT... Sky/weather.........Mostly cloudy (50-60 percent). A chance of showers and a slight chance of thunderstorms in the evening. Chance of thunder...20 percent. Min temperature.....46-51. Max humidity........95-100 percent. 20-foot winds.......Southeast winds 5 to 15 mph becoming northeast 5 to 10 mph early in the morning. CWR (> 0.10 inch)...20 percent. .MONDAY... Sky/weather.........Mostly cloudy (70-80 percent). A chance of showers in the morning, then a chance of showers and a slight chance of thunderstorms in the afternoon. Chance of thunder...20 percent. Max temperature.....66-71. Min humidity........59-64 percent. 20-foot winds.......North winds 5 to 10 mph becoming west 5 to 15 mph in the late morning and afternoon. CWR (> 0.10 inch)...20 percent. .Forecast days 3 through 7...... .TUESDAY...Mostly cloudy. A chance of showers and a slight chance of thunderstorms. Lows in the upper 40s. Highs in the upper 60s. West winds 15 to 25 mph. .WEDNESDAY...Partly cloudy. Lows in the mid 40s. Highs around 70. North winds 10 to 20 mph. .THURSDAY...Partly cloudy. Lows in the upper 40s. Highs in the mid 70s. East winds 10 to 15 mph. .FRIDAY...Mostly cloudy. A slight chance of showers and thunderstorms. Lows in the lower 50s. Highs around 80. .SATURDAY...Mostly cloudy. Showers likely and a slight chance of thunderstorms. Lows in the mid 50s. Highs in the mid 70s. $$ MTZ122-212215- Dawson/McCone/Prairie/Richland/Wibaux Counties- 1238 AM MDT Sun Jun 21 2026 .TODAY... Sky/weather.........A chance of showers and a slight chance of thunderstorms in the morning, then showers and a chance of thunderstorms in the afternoon. Chance of thunder...50 percent. Max temperature.....67-72. Min humidity........65-70 percent. 20-foot winds.......Southeast winds 5 to 15 mph. CWR (> 0.10 inch)...60 percent. .TONIGHT... Sky/weather.........Partly cloudy (45-55 percent) then becoming mostly cloudy (45-55 percent). A slight chance of showers and thunderstorms in the evening. Chance of thunder...20 percent. Min temperature.....47-52. Max humidity........95-100 percent. 20-foot winds.......Southeast winds 5 to 15 mph. CWR (> 0.10 inch)...10 percent. .MONDAY... Sky/weather.........A chance of showers and a slight chance of thunderstorms in the morning, then a chance of showers and thunderstorms in the afternoon. Chance of thunder...50 percent. Max temperature.....67-72. Min humidity........63-68 percent. 20-foot winds.......Southwest winds up to 5 mph becoming northwest 5 to 10 mph in the late morning and afternoon. CWR (> 0.10 inch)...50 percent. .Forecast days 3 through 7...... .TUESDAY...Partly cloudy. A chance of showers and a slight chance of thunderstorms. Lows in the upper 40s. Highs in the upper 60s. Northwest winds 10 to 20 mph. .WEDNESDAY...Partly cloudy. Lows in the mid 40s. Highs in the lower 70s. North winds 10 to 20 mph. .THURSDAY...Partly cloudy. Lows in the upper 40s. Highs in the upper 70s. East winds 10 to 15 mph. .FRIDAY...Mostly cloudy. A slight chance of showers and thunderstorms. Lows in the mid 50s. Highs in the lower 80s. .SATURDAY...Mostly cloudy. A chance of showers and thunderstorms. Lows in the upper 50s. Highs in the upper 70s. $$ weather.gov/glasgow