Weather WorldSummit Lake, MT 7-Day Weather Forecast
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Summit Lake Weather Forecast
Summit Lake, MT Weather Forecast Date: 206 AM MDT Tue Sep 01 2026
Weather forecast for Summit Lake, MT
Today Hi: 80°FHi: 27°C Lo: 46°F Lo: 8°C |
Today... Mostly sunny. Patchy smoke late in the afternoon. Highs in the upper 70s to mid 80s. |
Wed Hi: 66°FHi: 19°C Lo: 36°F Lo: 2°C |
Wednesday... Chance of rain showers in the morning, then rain showers likely and a chance of thunderstorms in the afternoon. Areas of fog in the morning. Chance of precipitation 70%. Some thunderstorms May produce gusty winds. Highs in the mid 60s to lower 70s. |
Thu Hi: 60°FHi: 16°C Lo: 36°F Lo: 2°C |
Thursday... Rain showers likely in the morning, then chance of rain showers in the afternoon. Areas of fog in the morning. Chance of showers 60%. Highs in the upper 50s to mid 60s. |
Fri Hi: 65°FHi: 18°C Lo: 36°F Lo: 2°C |
Friday... Partly cloudy with a 30% chance of rain showers. Areas of fog in the morning. Highs in the 60s. |
Sat Hi: 70°FHi: 21°C Lo: 40°F Lo: 4°C |
Saturday... Mostly cloudy. A 30% chance of rain in the morning. Highs in the upper 60s to mid 70s. |
| Sun Hi: 70°FHi: 21°C Lo: 45°F Lo: 7°C |
Sunday... Partly cloudy. Slight chance of rain in the morning, then chance of rain showers and a slight chance of thunderstorms in the afternoon. Chance of precipitation 30%. Highs in the upper 60s to mid 70s. |
| Labor Day Hi: 66°FHi: 19°C |
Labor Day... Mostly cloudy with a 50% chance of rain. Highs in the 60s to lower 70s. |
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