10-Day Weather Forecast - Plains, MT

Mostly sunny in the morning then becoming mostly cloudy. Highs in the 80s.

Mostly cloudy. Lows in the 50s.

Mostly sunny. Highs in the mid 80s to lower 90s.

Mostly clear. Lows in the 50s.

Mostly sunny. Highs in the 80s.

Mostly clear. Lows in the upper 40s to mid 50s.

Mostly sunny. Highs in the upper 70s to mid 80s.

Mostly clear. Lows in the upper 40s to mid 50s.

Sunny. Highs in the 80s to lower 90s.

Mostly clear. Lows in the 50s.

Mostly sunny. Highs in the 80s.

Partly cloudy. Lows in the 50s.

Mostly sunny. Highs in the 80s to lower 90s.

Clear. Low temperature around 59F. Dew point will be around 49F with an average humidity of 47%. Winds will be 3 mph from the W.

Sunny. High temperature around 98F. Dew point will be around 49F with an average humidity of 37%. Winds will be 2 mph from the W.

Clear. Low temperature around 59F. Dew point will be around 49F with an average humidity of 46%. Winds will be 3 mph from the W.

Sunny. High temperature around 98F. Dew point will be around 50F with an average humidity of 37%. Winds will be 1 mph from the W.

Clear. Low temperature around 60F. Dew point will be around 51F with an average humidity of 49%. Winds will be 2 mph from the W.