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City of Great Falls, MTGreat Falls, MT 7-Day Weather Forecast
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Great Falls Weather Forecast
Great Falls, MT Weather Forecast Date: 336 PM MDT Sat Aug 22 2026
Weather forecast for Great Falls, MT
Tonight Lo: 61°F Lo: 16°C |
Tonight... Mostly cloudy. Slight chance of thunderstorms early in the evening, then slight chance of showers late in the evening. Lows in the lower 60s. South winds 5 to 15 mph. Chance of precipitation 20%. |
Sun Hi: 89°FHi: 32°C Lo: 55°F Lo: 13°C |
Sunday... Breezy. Mostly sunny. A 20% chance of thunderstorms in the afternoon. Highs in the upper 80s. Southwest winds 5 to 15 mph increasing to west 15 to 25 mph in the afternoon. |
Mon Hi: 81°FHi: 27°C Lo: 55°F Lo: 13°C |
Monday... Sunny. Highs in the lower 80s. West winds up to 10 mph shifting to the northwest in the afternoon. |
| Tue Hi: 85°FHi: 29°C Lo: 55°F Lo: 13°C |
Tuesday... Mostly clear. Highs in the mid 80s. Lows in the mid 50s. |
| Wed Hi: 90°FHi: 32°C Lo: 59°F Lo: 15°C |
Wednesday... Mostly sunny. Highs around 90. |
| Thu Hi: 89°FHi: 32°C Lo: 55°F Lo: 13°C |
Thursday... Mostly sunny. Highs in the upper 80s. |
| Fri Hi: 85°FHi: 29°C Lo: 51°F Lo: 11°C |
Friday... Sunny. Highs in the mid 80s. |
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