10-Day Weather Forecast - Sumatra, MT

Sunny. Highs in the upper 80s. West winds 5 to 10 mph.

Mostly clear. Lows in the lower 60s. Northwest winds 5 to 10 mph in the evening becoming light overnight.

Sunny. Highs in the lower 90s. Southeast winds 5 to 10 mph.

Mostly cloudy. Chance of showers and slight chance of thunderstorms early in the evening then chance of showers in the late evening and overnight. Lows in the mid 60s. Chance of precipitation 30 percent.

Mostly sunny. A 20 percent chance of showers and thunderstorms in the afternoon. Highs in the upper 80s.

Partly cloudy. Lows in the lower 60s.

Sunny. Highs in the lower 90s.

Partly cloudy. Lows in the mid 60s.

Mostly sunny. Highs in the lower 90s.

Mostly cloudy. Slight chance of showers and thunderstorms in the evening then slight chance of showers overnight. Lows in the mid 60s. Chance of precipitation 20 percent.

Partly sunny. A 20 percent chance of showers in the afternoon. Highs in the mid 80s.

Mostly cloudy. Chance of showers and slight chance of thunderstorms in the evening then chance of showers overnight. Lows in the upper 50s. Chance of precipitation 40 percent.

Partly sunny with a 20 percent chance of showers. Highs in the upper 70s.

Partly cloudy. Low temperature around 57F. Dew point will be around 51F with an average humidity of 65%. Winds will be 3 mph from the N.

Sunny. High temperature around 78F. Dew point will be around 51F with an average humidity of 54%. Winds will be 2 mph from the W.

Clear. Low temperature around 59F. Dew point will be around 51F with an average humidity of 58%. Winds will be 2 mph from the SE.

Sunny. High temperature around 84F. Dew point will be around 52F with an average humidity of 48%. Winds will be 2 mph from the SW.

Clear. Low temperature around 63F. Dew point will be around 51F with an average humidity of 49%. Winds will be 1 mph from the N.