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High Lake, MT Weather Forecast
High Lake, MT Weather Forecast Date: 546 PM MDT Mon Sep 21 2026
The area/counties/county of: Yellowstone National Park, including the cities of: Lake, Mammoth, and Old Faithful.or toggle through each period.
Tonight... Mostly clear. Patchy fog after midnight. Lows in the mid 30s.
Tuesday... Partly cloudy. Patchy fog in the morning. A chance of rain showers with a slight chance of thunderstorms in the afternoon. Highs around 60. Southwest winds around 10 mph with gusts up to 20 mph in the afternoon. Chance of rain 30%.
Tuesday Night... A chance of thunderstorms in the evening. Cloudy with rain showers likely. Lows in the mid 30s. Chance of rain 60%.
Wednesday... Partly cloudy in the morning, then clearing. Highs in the upper 50s. Southwest winds around 10 mph with gusts up to 20 mph in the afternoon.
Wednesday Night... Mostly clear. Lows in the mid 30s. Southwest winds around 10 mph with gusts up to 20 mph in the evening.
Thursday... Sunny. Highs in the mid 60s.
Thursday Night... Mostly clear. Lows around 40.
Friday... Mostly sunny. Highs in the lower 60s.
Friday Night... Mostly clear. Lows in the upper 30s.
Saturday... Mostly sunny. Highs in the upper 50s.
Saturday Night... Partly cloudy. Lows in the upper 30s.
Sunday... Partly cloudy. A slight chance of rain showers in the morning, then a chance of rain showers with a slight chance of thunderstorms in the afternoon. Highs in the upper 50s. Chance of rain 30%.
Sunday Night... Partly cloudy in the evening, then becoming mostly cloudy. A slight chance of thunderstorms in the evening. A chance of rain showers. Lows in the mid 30s. Chance of rain 40%.
POP = Probability of Precipitation
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