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Big Arm, MT Weather Forecast
Big Arm, MT Weather Forecast Date: 1228 AM MDT Sat Oct 24 2026
The area/counties/county of: Flathead/Mission Valleys, including the cities of: Kalispell, Polson, and St. Ignatius.or toggle through each period.
Today... Partly cloudy. Highs in the upper 40s to mid 50s.
Tonight... Mostly cloudy in the evening then becoming partly cloudy. Patchy fog after midnight. Lows in the 20s.
Sunday... Mostly cloudy. Highs in the upper 40s to mid 50s.
Sunday Night... Mostly cloudy. Lows in the 20s.
Monday... Mostly cloudy. Highs in the upper 40s to mid 50s.
Monday Night... Mostly cloudy with a 50% chance of rain. Lows in the 20s to lower 30s.
Tuesday... Mostly cloudy with a chance of rain. A chance of snow in the morning. Chance of precipitation 50%. Highs in the mid 40s to lower 50s.
Tuesday Night... Mostly cloudy with a 50% chance of rain. Lows in the 20s to lower 30s.
Wednesday... Rain and snow likely in the morning, then a chance of rain and snow in the afternoon. Chance of precipitation 60%. Highs in the mid 40s to lower 50s.
Wednesday Night... Mostly cloudy with a 40% chance of rain and snow. Lows 19 to 26.
Thursday... Mostly cloudy with a 40% chance of rain and snow. Highs in the 40s.
Thursday Night... Mostly cloudy with a 30% chance of rain and snow. Lows 17 to 24.
POP = Probability of Precipitation
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