10-Day Weather Forecast - Big Arm, MT

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

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

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

Partly cloudy. Lows in the 50s.

Partly cloudy. A 20 percent chance of showers and thunderstorms in the afternoon. Highs in the upper 80s to mid 90s.

Partly cloudy. Lows in the 50s.

Mostly sunny. Highs in the 80s.

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

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

Mostly clear. Lows in the 40s to lower 50s.

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

Mostly clear. Lows in the 40s.

Mostly sunny. Highs in the 70s.

Clear. Low temperature around 52F. Dew point will be around 37F with an average humidity of 41%. Winds will be 3 mph from the W.

Sunny. High temperature around 74F. Dew point will be around 46F with an average humidity of 49%. Winds will be 2 mph from the SW.

Clear. Low temperature around 51F. Dew point will be around 41F with an average humidity of 50%. Winds will be 2 mph from the W.

Sunny. High temperature around 74F. Dew point will be around 47F with an average humidity of 56%. Winds will be 2 mph from the SW.

Clear. Low temperature around 50F. Dew point will be around 39F with an average humidity of 48%. Winds will be 2 mph from the W.