10-Day Weather Forecast - Lewistown, MT
- 62|43°FSunnyHourly details
Today
62°FNot as cool. Sunny. Highs in the lower 60s. West winds up to 10 mph. Gusts up to 25 mph in the afternoon.
Tonight
43°FNot as cool. Partly cloudy in the evening then mostly cloudy with a 20 percent chance of thunderstorms after midnight. Lows in the lower 40s. Southwest winds up to 10 mph with gusts to around 25 mph.
- 64|42°F50% Chance of StormsHourly details
Day
64°FBreezy. Mostly cloudy. Chance of rain showers in the morning then chance of rain showers and slight chance of thunderstorms in the afternoon. Highs 64 to 70. West winds 10 to 15 mph shifting to the northwest 15 to 25 mph in the afternoon. Chance of precipitation 50 percent.
Night
42°FMostly cloudy in the evening then becoming partly cloudy. Lows in the lower 40s. West winds 5 to 15 mph. Gusts up to 35 mph in the evening.
- 69|46°FMostly SunnyHourly details
Day
69°FMostly sunny. Highs 70 to 76. West winds 5 to 15 mph. Gusts up to 30 mph in the afternoon.
Night
46°FCloudy. Chance of rain showers and slight chance of thunderstorms in the evening then chance of rain showers after midnight. Lows in the upper 40s. Chance of precipitation 50 percent.
Weekend Weather
- 62|38°F80% Chance of StormsHourly details
Day
62°FCooler. Mostly cloudy. Rain showers in the morning then chance of rain showers and slight chance of thunderstorms in the afternoon. Highs around 60. Chance of precipitation 80 percent.
Night
38°FMostly cloudy with a 20 percent chance of rain in the evening then partly cloudy after midnight. Lows around 40.
- 78|46°FSunnyHourly details
Day
78°FWarmer sunny. Highs in the lower 70s.
Night
46°FPartly cloudy. Lows in the upper 40s. Highs in the mid 70s.
- 69|45°FPartly CloudyHourly details
Day
69°FPartly cloudy. Lows in the upper 40s. Highs in the mid 70s.
Night
45°FPartly cloudy. Lows in the upper 40s. Highs in the mid 70s.
- 71|44°FPartly Cloudy
Day
71°FPartly cloudy. Lows in the upper 40s. Highs in the mid 70s.
Night
44°FClear. Low temperature around 44F. Dew point will be around 37F with an average humidity of 64%. Winds will be 6 mph from the S.
- 72|44°F30% Chance of Rain
Day
72°FMostly sunny with a slight chance of rain. Chance of precipitation 25%. High temperature around 72F. Dew point will be around 38F with an average humidity of 41%. Winds will be 7 mph from the W.
Night
44°FMostly clear with a slight chance of rain. Chance of precipitation 30%. Low temperature around 44F. Dew point will be around 38F with an average humidity of 61%. Winds will be 4 mph from the S.
- 73|44°FMostly Sunny
Day
73°FMostly sunny. High temperature around 72F. Dew point will be around 38F with an average humidity of 41%. Winds will be 7 mph from the W.
Night
44°FMostly clear. Low temperature around 44F. Dew point will be around 39F with an average humidity of 61%. Winds will be 3 mph from the S.
- 74|46°FSunny
Day
74°FSunny. High temperature around 74F. Dew point will be around 39F with an average humidity of 41%. Winds will be 5 mph from the W.
Night
46°FPartly cloudy. Low temperature around 46F. Dew point will be around 40F with an average humidity of 61%. Winds will be 4 mph from the S.













