NWS Forecast for: Lewistown MT
Issued by: National Weather Service Great Falls, MT
Last Update: 5:25 pm MDT Apr 18, 2019
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  • Tonight

    Tonight: Partly cloudy, with a low around 46. West southwest wind 11 to 16 mph, with gusts as high as 24 mph.

    Partly Cloudy




    Low: 46 °F

  • Friday

    Friday: A 20 percent chance of showers and thunderstorms after 3pm.  Mostly sunny, with a high near 73. Breezy, with a west wind 11 to 16 mph increasing to 17 to 22 mph in the afternoon. Winds could gust as high as 32 mph.

    Sunny then
    Slight Chance
    T-storms and
    Breezy

    High: 73 °F

  • Friday
    Night

    Friday Night: A chance of showers and thunderstorms.  Mostly cloudy, with a low around 43. Breezy, with a west wind 17 to 22 mph decreasing to 7 to 12 mph after midnight. Winds could gust as high as 32 mph.  Chance of precipitation is 50%.

    Chance
    T-storms and
    Breezy then
    Chance
    Showers

    Low: 43 °F

  • Saturday

    Saturday: A chance of showers before 7am, then a chance of rain after 7am.  Mostly cloudy, with a high near 51. North wind 7 to 10 mph.  Chance of precipitation is 50%.

    Chance
    Showers



    High: 51 °F

  • Saturday
    Night

    Saturday Night: A 50 percent chance of rain.  Cloudy, with a low around 34. North wind 5 to 10 mph.

    Chance Rain




    Low: 34 °F

  • Sunday

    Sunday: A chance of rain and snow before noon, then a slight chance of rain between noon and 1pm.  Mostly cloudy, with a high near 51. Chance of precipitation is 30%. Little or no snow accumulation expected.

    Chance
    Rain/Snow
    then Slight
    Chance Rain

    High: 51 °F

  • Sunday
    Night

    Sunday Night: Mostly cloudy, with a low around 32.

    Mostly Cloudy




    Low: 32 °F

  • Monday

    Monday: Partly sunny, with a high near 57.

    Partly Sunny




    High: 57 °F

  • Monday
    Night

    Monday Night: Mostly clear, with a low around 38.

    Mostly Clear




    Low: 38 °F

  • Tonight: Partly cloudy, with a low around 46. West southwest wind 11 to 16 mph, with gusts as high as 24 mph.

    Friday: A 20 percent chance of showers and thunderstorms after 3pm. Mostly sunny, with a high near 73. Breezy, with a west wind 11 to 16 mph increasing to 17 to 22 mph in the afternoon. Winds could gust as high as 32 mph.

    Friday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 43. Breezy, with a west wind 17 to 22 mph decreasing to 7 to 12 mph after midnight. Winds could gust as high as 32 mph. Chance of precipitation is 50%.

    Saturday: A chance of showers before 7am, then a chance of rain after 7am. Mostly cloudy, with a high near 51. North wind 7 to 10 mph. Chance of precipitation is 50%.

    Saturday Night: A 50 percent chance of rain. Cloudy, with a low around 34. North wind 5 to 10 mph.

    Sunday: A chance of rain and snow before noon, then a slight chance of rain between noon and 1pm. Mostly cloudy, with a high near 51. Chance of precipitation is 30%. Little or no snow accumulation expected.

    Sunday Night: Mostly cloudy, with a low around 32.

    Monday: Partly sunny, with a high near 57.

    Monday Night: Mostly clear, with a low around 38.

    Tuesday: Mostly sunny, with a high near 64.

    Tuesday Night: Partly cloudy, with a low around 42.

    Wednesday: A chance of rain. Partly sunny, with a high near 68.

    Wednesday Night: A chance of rain. Mostly clear, with a low around 43.

    Thursday: A chance of rain. Partly sunny, with a high near 62.



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

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