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Rainbow Lake, MT Weather Forecast
Rainbow Lake, MT Weather Forecast Date: 1231 AM MDT Tue Sep 15 2026
The area/counties/county of: Yellowstone National Park, including the cities of: Lake, Mammoth, and Old Faithful.or toggle through each period.
Rest of Tonight... Mostly clear. Lows in the upper 20s.
Tuesday... Mostly sunny. Highs around 60. South winds around 10 mph, becoming southwest with gusts up to 25 mph in the afternoon.
Tuesday Night... Mostly clear. Lows in the mid 30s. Southwest winds around 10 mph with gusts up to 20 mph in the evening.
Wednesday... Mostly sunny. Highs in the mid 60s. Southwest winds around 10 mph in the afternoon.
Wednesday Night... Partly cloudy. A chance of rain showers after midnight. Lows in the upper 30s. Southeast winds around 10 mph. Chance of rain 40%.
Thursday... Partly cloudy. A chance of rain showers in the morning, then rain showers with a slight chance of thunderstorms in the afternoon. Highs in the lower 60s. Chance of rain 80%.
Thursday Night... Partly cloudy. Rain showers with a chance of thunderstorms in the evening, then a chance of rain showers with a slight chance of thunderstorms after midnight. Lows in the upper 30s. Chance of rain 80%.
Friday... Partly cloudy with rain showers likely. A chance of thunderstorms in the afternoon. Highs in the mid 50s. Chance of rain 60%.
Friday Night... Partly cloudy with a chance of rain showers with a slight chance of thunderstorms in the evening, then mostly clear with a slight chance of rain showers after midnight. Lows in the mid 30s. Chance of rain 30%.
Saturday... Partly cloudy with a slight chance of rain showers in the morning, then mostly sunny with a chance of rain showers with a slight chance of thunderstorms in the afternoon. Highs in the upper 50s. Chance of rain 30%.
Saturday Night... Mostly clear. Lows in the lower 30s.
Sunday... Mostly sunny. Highs in the lower 60s.
Sunday Night... Mostly clear. Lows in the mid 30s.
POP = Probability of Precipitation
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