10-Day Weather Forecast - Lewistown, MT

Not as cool. Mostly sunny. Highs 44 to 50. Southwest winds up to 10 mph with gusts to around 30 mph shifting to the west with gusts to around 40 mph in the afternoon.

Windy. Mostly clear in the evening then becoming mostly cloudy. Lows in the mid 20s. Northwest winds 15 to 30 mph with gusts to around 60 mph.

Windy colder. Partly sunny. Highs in the mid 30s. Northwest winds 15 to 30 mph. Gusts up to 60 mph decreasing to 45 mph in the afternoon.

Mostly cloudy in the evening then becoming partly cloudy. Lows around 17. Northwest winds 5 to 15 mph with gusts to around 35 mph.

Mostly sunny. Highs in the upper 30s. West winds 5 to 15 mph with gusts to around 30 mph.

Breezy. Mostly cloudy. Lows in the mid 20s. Highs in the upper 30s.

Breezy. Mostly cloudy. Lows in the mid 20s. Highs in the upper 30s.

Colder. Mostly cloudy. Lows around 16. Highs in the upper 20s.

Colder. Mostly cloudy. Lows around 16. Highs in the upper 20s.

Partly cloudy in the evening then becoming mostly cloudy. Lows around 11.

Partly sunny with a 20 percent chance of snow. Highs around 30.

Colder. Mostly cloudy with a 50 percent chance of snow. Lows around 4. Highs around 20.

Colder. Mostly cloudy with a 50 percent chance of snow. Lows around 4. Highs around 20.

Cloudy with a chance of snow. Chance of precipitation 40%. Low temperature around 5F. Dew point will be around -1F with an average humidity of 71%. Winds will be 4 mph from the SW.

Cloudy with a chance of snow. Chance of precipitation 35%. High temperature around 13F. Dew point will be around 1F with an average humidity of 64%. Winds will be 5 mph from the W.

Cloudy with a slight chance of snow. Chance of precipitation 25%. Low temperature around 8F. Dew point will be around 1F with an average humidity of 67%. Winds will be 6 mph from the SW.

Cloudy with a slight chance of snow. Chance of precipitation 25%. High temperature around 24F. Dew point will be around 9F with an average humidity of 59%. Winds will be 8 mph from the W.

Cloudy. Low temperature around 18F. Dew point will be around 9F with an average humidity of 63%. Winds will be 9 mph from the SW.