Weather Forecast for
Zip Code 59457 Lewistown, MT

Overnight: Mostly cloudy, with a low around 43. South southeast wind 3 to 5 mph.

Wednesday: A 30 percent chance of showers and thunderstorms, mainly between 4pm and 5pm. Cloudy, then gradually becoming mostly sunny, with a high near 66. Light and variable wind becoming east northeast around 5 mph in the afternoon.

Wednesday Night: Partly cloudy, with a low around 46. East southeast wind 6 to 9 mph.

Thursday: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1pm. High near 66. East southeast wind 5 to 7 mph. Chance of precipitation is 80%.

Thursday Night: A chance of showers and thunderstorms before 9pm, then a chance of showers between 9pm and midnight. Mostly cloudy, with a low around 47. East wind around 6 mph becoming south after midnight. Chance of precipitation is 30%.

Friday: A 50 percent chance of showers and thunderstorms after noon. Mostly cloudy, with a high near 71. South southeast wind 5 to 7 mph.

Friday Night: Showers and possibly a thunderstorm before midnight, then a chance of showers. Low around 47. South wind 5 to 9 mph becoming west after midnight. Chance of precipitation is 90%.

Saturday: A chance of showers, then showers and possibly a thunderstorm after noon. Mostly cloudy, with a high near 62. West wind around 6 mph.

Saturday Night: Showers and possibly a thunderstorm before midnight, then showers likely. Mostly cloudy, with a low around 42.

Sunday: Showers likely, then showers and possibly a thunderstorm after noon. Mostly cloudy, with a high near 55.

Sunday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 40.

Monday: A chance of showers and thunderstorms. Mostly cloudy, with a high near 59. Breezy.

Monday Night: A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 43.

Tuesday: A slight chance of showers and thunderstorms. Mostly sunny, with a high near 66.

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