National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
7-Day Forecast 47.07°N 109.43°W (Text-Only)
NWS Forecast for: Lewistown MT
Issued by: National Weather Service Great Falls, MT
Last Update: 2:11 pm MDT May 4, 2024		Print

  • Tonight

    Tonight: Increasing clouds, with a low around 36. Breezy, with an east southeast wind 14 to 23 mph, with gusts as high as 34 mph.

    Low: 36 °F

    Increasing
    Clouds and
    Breezy

  • Sunday

    Sunday: A 20 percent chance of rain after 4pm. Mostly cloudy, with a high near 67. East southeast wind 10 to 14 mph, with gusts as high as 21 mph.

    High: 67 °F

    Mostly Cloudy
    then Slight
    Chance Rain

  • Sunday
    Night

    Sunday Night: Showers and possibly a thunderstorm. Low around 39. South southeast wind 8 to 11 mph becoming west after midnight. Winds could gust as high as 18 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 39 °F

    Showers



  • Monday

    Monday: Rain likely. Cloudy, with a high near 49. Windy, with a west northwest wind 13 to 18 mph increasing to 25 to 30 mph in the afternoon. Winds could gust as high as 45 mph. Chance of precipitation is 70%.

    High: 49 °F

    Rain Likely
    and Windy


  • Monday
    Night

    Monday Night: A 50 percent chance of rain. Mostly cloudy, with a low around 34. Windy, with a west wind 30 to 35 mph increasing to 36 to 41 mph after midnight. Winds could gust as high as 60 mph.

    Low: 34 °F

    Chance Rain
    and Windy


  • Tuesday

    Tuesday: A chance of rain and snow before noon, then rain likely. Mostly cloudy, with a high near 42. Windy, with a west wind 34 to 41 mph, with gusts as high as 60 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.

    High: 42 °F

    Windy. Chance
    Rain/Snow
    then Rain
    Likely

  • Tuesday
    Night

    Tuesday Night: Rain before midnight, then rain and snow. Low around 32. Windy, with a west northwest wind 34 to 39 mph decreasing to 28 to 33 mph after midnight. Winds could gust as high as 60 mph. Chance of precipitation is 80%. New snow accumulation of less than one inch possible.

    Low: 32 °F

    Rain and
    Windy then
    Rain/Snow and
    Breezy

  • Wednesday

    Wednesday: Rain, possibly mixed with snow, becoming all rain after noon. Cloudy, with a high near 41. Breezy, with a west northwest wind 21 to 26 mph, with gusts as high as 39 mph.

    High: 41 °F

    Breezy.
    Rain/Snow
    then Rain

  • Wednesday
    Night

    Wednesday Night: Rain. Cloudy, with a low around 33.

    Low: 33 °F

    Rain



    • Tonight: Increasing clouds, with a low around 36. Breezy, with an east southeast wind 14 to 23 mph, with gusts as high as 34 mph.

    Sunday: A 20 percent chance of rain after 4pm. Mostly cloudy, with a high near 67. East southeast wind 10 to 14 mph, with gusts as high as 21 mph.

    Sunday Night: Showers and possibly a thunderstorm. Low around 39. South southeast wind 8 to 11 mph becoming west after midnight. Winds could gust as high as 18 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Monday: Rain likely. Cloudy, with a high near 49. Windy, with a west northwest wind 13 to 18 mph increasing to 25 to 30 mph in the afternoon. Winds could gust as high as 45 mph. Chance of precipitation is 70%.

    Monday Night: A 50 percent chance of rain. Mostly cloudy, with a low around 34. Windy, with a west wind 30 to 35 mph increasing to 36 to 41 mph after midnight. Winds could gust as high as 60 mph.

    Tuesday: A chance of rain and snow before noon, then rain likely. Mostly cloudy, with a high near 42. Windy, with a west wind 34 to 41 mph, with gusts as high as 60 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.

    Tuesday Night: Rain before midnight, then rain and snow. Low around 32. Windy, with a west northwest wind 34 to 39 mph decreasing to 28 to 33 mph after midnight. Winds could gust as high as 60 mph. Chance of precipitation is 80%. New snow accumulation of less than one inch possible.

    Wednesday: Rain, possibly mixed with snow, becoming all rain after noon. Cloudy, with a high near 41. Breezy, with a west northwest wind 21 to 26 mph, with gusts as high as 39 mph.

    Wednesday Night: Rain. Cloudy, with a low around 33.

    Thursday: Rain likely. Mostly cloudy, with a high near 49.

    Thursday Night: A chance of rain. Mostly cloudy, with a low around 34.

    Friday: A slight chance of rain. Mostly sunny, with a high near 59.

    Friday Night: Mostly clear, with a low around 37.

    Saturday: Sunny, with a high near 67.


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

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