NWS Forecast for: Lewistown MT
Issued by: National Weather Service Great Falls, MT
Last Update: 3:13 am MDT Aug 25, 2019
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  • Today

    Today: A slight chance of showers between 3pm and 4pm, then a chance of showers and thunderstorms after 4pm.  Increasing clouds, with a high near 73. West northwest wind 6 to 15 mph, with gusts as high as 24 mph.  Chance of precipitation is 50%.

    Sunny then
    Chance
    Showers

    High: 73 °F

  • Tonight

    Tonight: A 50 percent chance of showers and thunderstorms before 10pm.  Partly cloudy, with a low around 45. West wind 5 to 15 mph, with gusts as high as 26 mph.

    Chance
    Showers then
    Partly Cloudy

    Low: 45 °F

  • Monday

    Monday: A chance of showers, with thunderstorms also possible after 4pm.  Sunny, with a high near 65. West southwest wind 5 to 15 mph becoming northwest in the afternoon. Winds could gust as high as 26 mph.  Chance of precipitation is 30%.

    Chance
    Showers

    High: 65 °F

  • Monday
    Night

    Monday Night: A chance of showers and thunderstorms before 7pm, then a slight chance of showers between 7pm and 1am.  Partly cloudy, with a low around 39. Northwest wind 7 to 15 mph, with gusts as high as 26 mph.  Chance of precipitation is 30%.

    Chance
    Showers

    Low: 39 °F

  • Tuesday

    Tuesday: Sunny, with a high near 68. West wind 6 to 10 mph, with gusts as high as 18 mph.

    Sunny


    High: 68 °F

  • Tuesday
    Night

    Tuesday Night: Clear, with a low around 43.

    Clear


    Low: 43 °F

  • Wednesday

    Wednesday: Sunny, with a high near 78.

    Sunny


    High: 78 °F

  • Wednesday
    Night

    Wednesday Night: Mostly clear, with a low around 45.

    Mostly Clear


    Low: 45 °F

  • Thursday

    Thursday: Sunny, with a high near 72.

    Sunny


    High: 72 °F

  • Today: A slight chance of showers between 3pm and 4pm, then a chance of showers and thunderstorms after 4pm. Increasing clouds, with a high near 73. West northwest wind 6 to 15 mph, with gusts as high as 24 mph. Chance of precipitation is 50%.

    Tonight: A 50 percent chance of showers and thunderstorms before 10pm. Partly cloudy, with a low around 45. West wind 5 to 15 mph, with gusts as high as 26 mph.

    Monday: A chance of showers, with thunderstorms also possible after 4pm. Sunny, with a high near 65. West southwest wind 5 to 15 mph becoming northwest in the afternoon. Winds could gust as high as 26 mph. Chance of precipitation is 30%.

    Monday Night: A chance of showers and thunderstorms before 7pm, then a slight chance of showers between 7pm and 1am. Partly cloudy, with a low around 39. Northwest wind 7 to 15 mph, with gusts as high as 26 mph. Chance of precipitation is 30%.

    Tuesday: Sunny, with a high near 68. West wind 6 to 10 mph, with gusts as high as 18 mph.

    Tuesday Night: Clear, with a low around 43.

    Wednesday: Sunny, with a high near 78.

    Wednesday Night: Mostly clear, with a low around 45.

    Thursday: Sunny, with a high near 72.

    Thursday Night: A slight chance of rain after 1am. Mostly cloudy, with a low around 46.

    Friday: A slight chance of rain. Mostly sunny, with a high near 74.

    Friday Night: Partly cloudy, with a low around 48.

    Saturday: Sunny, with a high near 79.



    Lewistown MT
     47.07°N 109.43°W (Elev. 3898 ft)

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