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Arch Lake Weather Forecast
Arch Lake, MT Weather Forecast Date: 1159 AM MST Thu Nov 05 2026
Weather forecast for Arch Lake, MT
Today Hi: 49°FHi: 9°C Lo: 25°F Lo: -4°C |
Rest of Today... Increasing clouds. Highs in the upper 40s. Southwest winds 5 to 15 mph. |
Fri Hi: 45°FHi: 7°C Lo: 21°F Lo: -6°C |
Friday... Mostly sunny. Highs in the mid 40s. Southwest winds 5 to 15 mph. |
| Sat Hi: 55°FHi: 13°C Lo: 29°F Lo: -2°C |
Saturday... Sunny. Highs in the mid 50s. Southwest winds 5 to 10 mph. |
| Sun Hi: 59°FHi: 15°C Lo: 29°F Lo: -2°C |
Sunday... Sunny. Highs in the upper 50s. |
| Mon Hi: 51°FHi: 11°C Lo: 29°F Lo: -2°C |
Monday... Mostly sunny. Highs in the lower 50s. |
| Tue Hi: 51°FHi: 11°C Lo: 29°F Lo: -2°C |
Tuesday... Mostly sunny. Highs in the lower 50s. |
| Veterans Day Hi: 55°FHi: 13°C Lo: 29°F Lo: -2°C |
Veterans Day... Mostly sunny. Highs in the mid 50s. |
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