Weather WorldLake Mason, MT 7-Day Night Weather Forecast
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Lake Mason, MT Weather Forecast
Lake Mason, MT Weather Forecast Date: 1151 PM MST Mon Nov 02 2026
The area/counties/county of: Musselshell, including the city of Roundup.or toggle through each period.
Rest of Tonight... Mostly clear. Colder. Lows in the upper 20s. Southwest winds 5 to 10 mph.
Tuesday... Sunny. Patchy fog early in the morning. Highs in the lower 50s. Southwest winds 5 to 15 mph.
Tuesday Night... Mostly clear. Lows in the upper 20s. Southwest winds 5 to 10 mph.
Wednesday... Decreasing clouds. Highs in the lower 50s. Southwest winds 5 to 10 mph in the morning becoming light in the afternoon.
Wednesday Night... Mostly clear. Lows in the upper 20s. Light and variable winds in the evening becoming southwest 5 to 10 mph overnight.
Thursday... Mostly sunny. Highs in the upper 50s.
Thursday Night... Partly cloudy. Lows in the lower 30s.
Friday... Sunny. Highs in the mid 50s.
Friday Night... Partly cloudy. Lows in the mid 30s.
Saturday... Sunny. Highs in the mid 50s.
Saturday Night... Mostly clear. Lows in the lower 30s.
Sunday... Mostly sunny. Highs around 60.
Sunday Night... Partly cloudy. Lows in the mid 30s.
POP = Probability of Precipitation
Lake Mason Radar Loop
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