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Westby, MT Weather Forecast
Westby, MT Weather Forecast Date: 346 AM MDT Tue Sep 15 2026
The area/counties/county of: Sheridan, including the cities of: Plentywood and Medicine Lake.or toggle through each period.
Today... Partly sunny. Highs in the lower 60s. Northwest wind 10 to 15 mph.
Tonight... Mostly cloudy. Lows in the mid 40s. East wind 5 to 10 mph.
Wednesday... Cloudy with a slight chance of showers in the morning, then partly sunny in the afternoon. Highs in the lower 60s. Northeast wind 10 to 15 mph. Chance of rain 20%.
Wednesday Night... Mostly clear. Lows in the upper 30s. Northeast wind 5 to 10 mph, becoming southeast after midnight.
Thursday... Sunny. Highs in the upper 60s. Southeast wind around 5 mph, increasing to around 15 mph in the afternoon.
Thursday Night... A chance of showers with a slight chance of thunderstorms. Lows in the lower 50s.
Friday... Showers likely with a chance of thunderstorms. Highs in the upper 60s.
Friday Night... Showers likely with a chance of thunderstorms. Lows around 50.
Saturday... A chance of showers. Highs in the upper 60s. Lows in the upper 40s.
Saturday Night... A chance of showers. Highs in the upper 60s. Lows in the upper 40s.
Sunday... Mostly sunny. Highs in the lower 70s.
Sunday Night... Mostly clear. Lows in the mid 40s. Highs in the mid 70s.
POP = Probability of Precipitation
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