Halfmoon Lake, MT 7-Day Weather Forecast
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Halfmoon Lake Weather Forecast


Halfmoon Lake, MT Weather Forecast Date: 900 PM MDT Wed Sep 23 2026
Weather forecast for Halfmoon Lake, MT
| Tonight Lo: 46°F Lo: 8°C |
Tonight... Partly cloudy. Lows in the 40s to lower 50s. |
| Thu Hi: 70°FHi: 21°C Lo: 55°F Lo: 13°C |
Thursday... Mostly sunny. Highs in the upper 60s to mid 70s. |
| Fri Hi: 66°FHi: 19°C Lo: 36°F Lo: 2°C |
Friday... Partly cloudy. A 40% chance of rain in the afternoon. Highs in the mid 60s to lower 70s. Southwest winds 15 to 20 mph with gusts to around 30 mph. |
| Sat Hi: 50°FHi: 10°C Lo: 36°F Lo: 2°C |
Saturday... Mostly cloudy. A chance of rain and a slight chance of snow in the morning. Chance of precipitation 30%. Cooler. Highs in the upper 40s to mid 50s. |
| Sun Hi: 55°FHi: 13°C Lo: 40°F Lo: 4°C |
Sunday... Mostly cloudy. Highs in the 50s. |
| Mon Hi: 50°FHi: 10°C Lo: 40°F Lo: 4°C |
Monday... Partly cloudy. Highs in the upper 40s to mid 50s. |
| Tue Hi: 50°FHi: 10°C Lo: 40°F Lo: 4°C |
Tuesday... Partly cloudy. Highs in the upper 40s to mid 50s. |
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