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Sumatra, MT Weather Forecast
Sumatra, MT Weather Forecast Date: 350 AM MDT Mon Sep 07 2026
The area/counties/county of: Northern Rosebud, including the cities of: Colstrip and Forsyth.or toggle through each period.
Today... Decreasing clouds. A 20% chance of showers and thunderstorms late in the afternoon. Highs in the mid 80s. West winds 10 to 20 mph.
Tonight... Mostly clear. Colder. Lows in the lower 50s. West winds 10 to 20 mph.
Tuesday... Sunny. Highs in the upper 70s. West winds 15 to 25 mph.
Tuesday Night... Partly cloudy. Lows in the upper 40s. West winds 5 to 15 mph.
Wednesday... Sunny. Highs in the lower 80s. West winds 5 to 15 mph.
Wednesday Night... Mostly clear. Lows in the lower 50s.
Thursday... Sunny. Highs in the upper 80s.
Thursday Night... Mostly clear. Lows in the lower 50s.
Friday... Mostly sunny. Highs in the mid 70s.
Friday Night... Partly cloudy. Slight chance of rain showers in the evening, then chance of rain showers overnight. Lows in the mid 40s. Chance of precipitation 30%.
Saturday... Partly sunny. A 20% chance of rain showers in the afternoon. Highs in the upper 60s.
Saturday Night... Mostly cloudy with a 40% chance of rain showers. Lows in the lower 40s.
POP = Probability of Precipitation
Sumatra Radar Loop
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