Fort Harrison, MT 7-Day Weather Forecast
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Fort Harrison Weather Forecast


Fort Harrison, MT Weather Forecast Date: 1232 AM MDT Wed Sep 09 2026
Weather forecast for Fort Harrison, MT
| Tonight Lo: 49°F Lo: 9°C |
Tonight... Breezy. Partly cloudy. Highs in the lower 70s. Lows 43 to 53. Southwest winds 5 to 25 mph with gusts to around 65 mph. |
| Thu Hi: 75°FHi: 24°C Lo: 45°F Lo: 7°C |
Thursday... Breezy. Mostly cloudy. Highs in the mid 70s. Southwest winds 10 to 25 mph. Gusts up to 60 mph Decreasing to 40 mph in the afternoon. |
| Fri Hi: 59°FHi: 15°C Lo: 41°F Lo: 5°C |
Friday... Cooler. Mostly cloudy. Rain showers likely in the morning, then chance of rain showers in the afternoon. Highs in the upper 50s. North winds up to 10 mph. Chance of showers 70%. |
| Sat Hi: 51°FHi: 11°C Lo: 39°F Lo: 4°C |
Saturday... Mostly cloudy. Rain likely in the morning, then chance of rain in the afternoon. Highs in the lower 50s. Chance of rain 70%. |
| Sun Hi: 49°FHi: 9°C Lo: 39°F Lo: 4°C |
Sunday... Rain showers and snow showers in the morning, then rain showers likely in the afternoon. Highs in the upper 40s. Chance of precipitation 80%. |
| Mon Hi: 59°FHi: 15°C Lo: 39°F Lo: 4°C |
Monday... Warmer. Partly cloudy. Highs in the upper 50s. Lows in the upper 30s. |
| Tue Hi: 59°FHi: 15°C Lo: 39°F Lo: 4°C |
Tuesday... Mostly sunny with a 20% chance of rain showers. Highs in the upper 50s. |
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