10-Day Weather Forecast - Lewistown, MT

Cloudy with likely rain. Chance of precipitation 85%. High temperature around 55F. Dew point will be around 49F with an average humidity of 89%. Winds will be 5 mph from the N.

Mostly cloudy. Low temperature around 44F. Dew point will be around 44F with an average humidity of 90%. Winds will be 3 mph from the N.

Cloudy. A 20 percent chance of rain showers in the morning. Highs in the upper 50s. East winds up to 15 mph.

Mostly cloudy. Slight chance of rain showers in the evening, then chance of rain showers after midnight. Lows in the lower 40s. East winds 10 to 15 mph with gusts to around 35 mph. Chance of showers 30 percent.

Breezy. Mostly cloudy. Chance of rain showers in the morning, then rain showers likely and slight chance of thunderstorms in the afternoon. Highs in the lower 60s. Southeast winds 10 to 25 mph. Chance of precipitation 70 percent.

Mostly cloudy. Rain showers and slight chance of thunderstorms in the evening, then chance of rain showers after midnight. Lows in the lower 40s. West winds 10 to 20 mph. Gusts up to 45 mph after midnight. Chance of precipitation 90 percent.

Windy. Partly sunny. Highs around 60.

Partly cloudy. Lows in the lower 40s.

Partly cloudy. Highs in the lower 60s.

Partly cloudy. Lows in the lower 40s.

Partly cloudy. Highs in the lower 60s.

Mostly clear. Lows in the lower 40s.

Mostly clear. Highs in the upper 60s.

Mostly clear. Lows in the upper 40s.

Mostly clear. Highs in the lower 70s.

Mostly clear. Low temperature around 45F. Dew point will be around 44F with an average humidity of 76%. Winds will be 3 mph from the S.

Sunny. High temperature around 67F. Dew point will be around 46F with an average humidity of 60%. Winds will be 3 mph from the N.

Clear. Low temperature around 46F. Dew point will be around 43F with an average humidity of 71%. Winds will be 4 mph from the S.