10-Day Weather Forecast - Lewistown, MT

Colder. Mostly sunny. Highs in the upper 30s. West winds 10 to 20 mph with gusts to around 35 mph.

Partly cloudy. Lows in the mid 20s. Southwest winds 5 to 15 mph with gusts to around 30 mph.

Mostly cloudy. A 20 percent chance of snow in the afternoon. Highs around 40. South winds up to 10 mph.

Mostly cloudy with a 20 percent chance of rain and snow. Near steady temperature in the mid 30s. South winds up to 10 mph.

Mostly cloudy. Chance of snow and slight chance of rain in the morning. Highs in the mid 40s. West winds 5 to 15 mph. Chance of precipitation 50 percent.

Mostly cloudy. Lows in the mid 20s. Highs 41 to 47.

Mostly cloudy. Lows in the mid 20s. Highs 41 to 47.

Mostly cloudy. Lows around 30. Highs in the lower 50s.

Mostly cloudy. Lows around 30. Highs in the lower 50s.

Mostly cloudy. A 20 percent chance of snow after midnight. Lows in the mid 20s.

Mostly cloudy. Highs around 40. Lows in the lower 20s.

Mostly cloudy. Highs around 40. Lows in the lower 20s.

Mostly cloudy. Highs around 40. Lows in the lower 20s.

Mostly cloudy. Highs around 40. Lows in the lower 20s.

Mostly cloudy. Highs around 40. Lows in the lower 20s.

Mostly clear. Low temperature around 28F. Dew point will be around 18F with an average humidity of 62%. Winds will be 10 mph from the SW.

Sunny. High temperature around 40F. Dew point will be around 20F with an average humidity of 50%. Winds will be 12 mph from the SW.

Clear. Low temperature around 31F. Dew point will be around 17F with an average humidity of 54%. Winds will be 13 mph from the SW.