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City of Sidney, MTSidney, MT 7-Day Night Weather Forecast
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Sidney, MT Weather Forecast
Sidney, MT Weather Forecast Date: 1246 PM MDT Tue Sep 08 2026
The area/counties/county of: Richland, including the cities of: Sidney and Fairview.or toggle through each period.
Rest of Today... Mostly sunny with a 20% chance of showers. Breezy. Near steady temperature in the lower 70s. West wind 20 to 25 mph with gusts up to 40 mph.
Tonight... Partly cloudy with a 20% chance of showers. Lows in the upper 40s. West wind 15 to 20 mph.
Wednesday... Sunny. Highs in the upper 70s. West wind 10 to 15 mph.
Wednesday Night... Mostly clear. Lows in the upper 40s. Southwest wind around 5 mph.
Thursday... Sunny. Highs in the upper 80s. Southwest wind 10 to 15 mph, becoming west 15 to 20 mph in the afternoon.
Thursday Night... Mostly clear. Lows in the lower 50s.
Friday... A slight chance of thunderstorms. Cooler with highs in the lower 70s.
Friday Night... A slight chance of showers. Lows in the lower 40s.
Saturday... Partly sunny. Highs in the mid 60s.
Saturday Night... A slight chance of showers. Lows in the upper 30s.
Sunday... A chance of showers with a slight chance of thunderstorms. Highs in the lower 60s.
Sunday Night... Showers likely. Lows in the lower 40s.
POP = Probability of Precipitation
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