Weather WorldPlains, MT 7-Day Weather Forecast
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Plains Weather Forecast
Plains, MT Weather Forecast Date: 1222 PM MDT Tue Sep 15 2026
Weather forecast for Plains, MT
Tonight Lo: 40°F Lo: 4°C |
Tonight... Mostly cloudy until early morning then becoming partly cloudy. Areas of fog late in the night. Lows in the upper 30s to mid 40s. |
Wed Hi: 70°FHi: 21°C Lo: 45°F Lo: 7°C |
Wednesday... Mostly sunny. Areas of fog in the morning. Highs in the upper 60s to mid 70s. |
| Thu Hi: 76°FHi: 24°C Lo: 46°F Lo: 8°C |
Thursday... Mostly sunny. Areas of fog in the morning. Highs in the 70s to lower 80s. |
Fri Hi: 70°FHi: 21°C Lo: 46°F Lo: 8°C |
Friday... A chance of rain in the morning, then rain showers likely and a slight chance of thunderstorms in the afternoon. Chance of precipitation 60%. Highs in the upper 60s to mid 70s. |
Sat Hi: 70°FHi: 21°C Lo: 46°F Lo: 8°C |
Saturday... Mostly sunny. A 20% chance of rain in the morning. Highs in the upper 60s to mid 70s. |
| Sun Hi: 76°FHi: 24°C Lo: 46°F Lo: 8°C |
Sunday... Mostly sunny. Highs in the 70s to lower 80s. |
| Mon Hi: 76°FHi: 24°C Lo: 46°F Lo: 8°C |
Monday... Mostly sunny. Highs in the mid 70s to lower 80s. |
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