Weather WorldLake Mason, MT 7-Day Night Weather Forecast
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Lake Mason, MT Weather Forecast
Lake Mason, MT Weather Forecast Date: 901 PM MDT Fri Oct 23 2026
The area/counties/county of: Musselshell, including the city of Roundup.or toggle through each period.
Rest of Tonight... Rain and snow showers late in the evening. Colder. No snow accumulation. Lows in the upper 20s. West winds 15 to 25 mph. Chance of precipitation 80%.
Saturday... Sunny, cooler. Highs in the upper 40s. Southwest winds 5 to 10 mph.
Saturday Night... Mostly clear. Lows in the mid 20s. Light and variable winds.
Sunday... Sunny. Highs in the upper 40s. Northeast winds 5 to 10 mph.
Sunday Night... Partly cloudy. Lows in the upper 20s. Northeast winds 5 to 10 mph.
Monday... Mostly sunny. Highs in the lower 50s.
Monday Night... Partly cloudy. Lows around 30.
Tuesday... Partly sunny. Slight chance of rain showers in the morning, then chance of rain showers in the afternoon. Highs in the lower 50s. Chance of precipitation 30%.
Tuesday Night... Mostly cloudy with a 40% chance of rain showers. Lows in the lower 30s.
Wednesday... Partly sunny. Chance of rain and snow showers early in the morning, then chance of snow showers late in the morning. Highs in the upper 40s. Chance of precipitation 30%.
Wednesday Night... Partly cloudy. Lows in the mid 20s.
Thursday... Mostly sunny. Highs in the mid 40s.
Thursday Night... Mostly cloudy. Lows in the mid 20s.
POP = Probability of Precipitation
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