NWS Forecast for: Lewistown MT
Issued by: National Weather Service Great Falls, MT
Last Update: 4:24 am MDT Jun 27, 2019		Print

  • Overnight

    Overnight: A 30 percent chance of rain. Mostly cloudy, with a low around 53. Southeast wind around 7 mph.

    Chance Rain




    Low: 53 °F

  • Thursday

    Thursday: A chance of rain, mainly between 11am and noon, then a chance of showers and thunderstorms after noon. Some of the storms could be severe. Partly sunny, with a high near 78. East southeast wind 6 to 13 mph. Chance of precipitation is 50%.

    Chance Rain
    then Severe
    Thunderstorms


    High: 78 °F

  • Thursday
    Night

    Thursday Night: A 40 percent chance of showers and thunderstorms, mainly before 10pm. Some of the storms could be severe. Patchy fog after midnight. Otherwise, partly cloudy, with a low around 49. South southeast wind 9 to 14 mph becoming light and variable after midnight. Winds could gust as high as 20 mph.

    Severe
    Thunderstorms
    then Patchy
    Fog

    Low: 49 °F

  • Friday

    Friday: A chance of rain before 3pm, then a chance of showers and thunderstorms after 3pm. Some of the storms could be severe. Patchy fog before 9am. Otherwise, partly sunny, with a high near 75. Calm wind becoming northeast 5 to 7 mph in the afternoon. Chance of precipitation is 50%.

    Chance Rain
    and Patchy
    Fog then
    Severe
    Thunderstorms

    High: 75 °F

  • Friday
    Night

    Friday Night: A chance of showers and thunderstorms before 9pm, then a chance of rain after 9pm. Some of the storms could be severe. Mostly cloudy, with a low around 49. East wind 5 to 8 mph becoming light and variable after midnight. Chance of precipitation is 50%.

    Severe
    Thunderstorms
    then Chance
    Rain

    Low: 49 °F

  • Saturday

    Saturday: A 50 percent chance of rain. Partly sunny, with a high near 73.

    Chance Rain




    High: 73 °F

  • Saturday
    Night

    Saturday Night: A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 49.

    Chance
    Showers



    Low: 49 °F

  • Sunday

    Sunday: Rain likely, mainly after noon. Mostly sunny, with a high near 74.

    Rain Likely




    High: 74 °F

  • Sunday
    Night

    Sunday Night: Showers likely and possibly a thunderstorm before midnight, then a chance of showers and thunderstorms after midnight. Mostly cloudy, with a low around 50.

    Showers
    Likely then
    Chance
    T-storms

    Low: 50 °F

    • Overnight: A 30 percent chance of rain. Mostly cloudy, with a low around 53. Southeast wind around 7 mph.

    Thursday: A chance of rain, mainly between 11am and noon, then a chance of showers and thunderstorms after noon. Some of the storms could be severe. Partly sunny, with a high near 78. East southeast wind 6 to 13 mph. Chance of precipitation is 50%.

    Thursday Night: A 40 percent chance of showers and thunderstorms, mainly before 10pm. Some of the storms could be severe. Patchy fog after midnight. Otherwise, partly cloudy, with a low around 49. South southeast wind 9 to 14 mph becoming light and variable after midnight. Winds could gust as high as 20 mph.

    Friday: A chance of rain before 3pm, then a chance of showers and thunderstorms after 3pm. Some of the storms could be severe. Patchy fog before 9am. Otherwise, partly sunny, with a high near 75. Calm wind becoming northeast 5 to 7 mph in the afternoon. Chance of precipitation is 50%.

    Friday Night: A chance of showers and thunderstorms before 9pm, then a chance of rain after 9pm. Some of the storms could be severe. Mostly cloudy, with a low around 49. East wind 5 to 8 mph becoming light and variable after midnight. Chance of precipitation is 50%.

    Saturday: A 50 percent chance of rain. Partly sunny, with a high near 73.

    Saturday Night: A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 49.

    Sunday: Rain likely, mainly after noon. Mostly sunny, with a high near 74.

    Sunday Night: Showers likely and possibly a thunderstorm before midnight, then a chance of showers and thunderstorms after midnight. Mostly cloudy, with a low around 50.

    Monday: A chance of rain before noon, then a chance of showers and thunderstorms after noon. Mostly sunny, with a high near 78.

    Monday Night: A chance of rain and thunderstorms. Partly cloudy, with a low around 51.

    Tuesday: A chance of rain and thunderstorms. Mostly sunny, with a high near 77.

    Tuesday Night: A chance of rain and thunderstorms. Partly cloudy, with a low around 50.

    Wednesday: A chance of rain and thunderstorms. Partly sunny, with a high near 73.


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

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