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Harrison Lake, MT Weather Forecast
Harrison Lake, MT Weather Forecast Date: 206 PM MDT Sat Oct 17 2026
The area/counties/county of: West Glacier Region, including the city of Swan Lake.or toggle through each period.
Tonight... Very windy with southwest winds 25 to 35 mph in the evening. Partly cloudy. Areas of fog late in the night. Lows in the 30s. 15 to 20 mph with gusts to around 30 mph after midnight.
Sunday... Partly cloudy in the morning then becoming sunny. Highs in the upper 40s to mid 50s.
Sunday Night... Partly cloudy in the evening then becoming mostly cloudy. Lows in the 30s.
Monday... Partly cloudy. Highs in the mid 50s to lower 60s.
Monday Night... Mostly cloudy. Lows in the mid 30s to lower 40s.
Tuesday... Partly cloudy. Highs in the 50s to lower 60s.
Tuesday Night... Mostly clear. Lows in the 30s.
Wednesday... Mostly sunny. Highs in the mid 50s to lower 60s.
Wednesday Night... Mostly clear. Lows in the mid 30s to lower 40s.
Thursday... Partly cloudy. Highs in the mid 50s to lower 60s.
Thursday Night... Mostly cloudy. Slight chance of rain in the evening, then a chance of rain and a slight chance of snow after midnight. Chance of precipitation 40%. Lows in the mid 30s to lower 40s.
Friday... Rain likely and a slight chance of snow. Chance of precipitation 70%. Highs in the mid 40s to lower 50s.
Friday Night... A chance of rain. Snow likely in the evening, then a chance of snow after midnight. Chance of precipitation 60%. Lows in the upper 20s to mid 30s.
POP = Probability of Precipitation
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