Weather WorldGrass Lake, MT 7-Day Weather Forecast
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Grass Lake Weather Forecast
Grass Lake, MT Weather Forecast Date: 327 AM MDT Fri Oct 09 2026
Weather forecast for Grass Lake, MT
Today Hi: 66°FHi: 19°C Lo: 35°F Lo: 2°C |
Today... Mostly cloudy. A 20% chance of rain late in the afternoon. Highs in the mid 60s to lower 70s. South winds to 15 mph shifting to the southwest in the afternoon. |
| Sat Hi: 50°FHi: 10°C Lo: 30°F Lo: -1°C |
Saturday... Mostly cloudy with a 50% chance of rain. Highs in the upper 40s to mid 50s. Northeast winds 15 to 20 mph. |
Sun Hi: 45°FHi: 7°C Lo: 25°F Lo: -4°C |
Sunday... Mostly cloudy. A 30% chance of snow in the morning. Highs in the 40s. |
Columbus Day Hi: 50°FHi: 10°C Lo: 26°F Lo: -3°C |
Columbus Day... Mostly sunny. Highs in the upper 40s to mid 50s. |
| Tue Hi: 56°FHi: 13°C Lo: 30°F Lo: -1°C |
Tuesday... Mostly sunny. Highs in the 50s to lower 60s. |
| Wed Hi: 55°FHi: 13°C Lo: 30°F Lo: -1°C |
Wednesday... Mostly cloudy with a 40% chance of rain. Highs in the 50s. |
Thu Hi: 56°FHi: 13°C |
Thursday... Partly cloudy. Highs in the 50s to lower 60s. |
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