NWS Forecast for: Lewistown MT
Issued by: National Weather Service Great Falls, MT
Last Update: 11:15 pm MDT Oct 20, 2020
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  • Tonight

    Tonight: A chance of snow between midnight and 4am.  Mostly cloudy, with a low around 22. Southeast wind 5 to 7 mph.  Chance of precipitation is 30%. Total nighttime snow accumulation of less than a half inch possible.

    Chance Snow



    Low: 22 °F

  • Wednesday

    Wednesday: A chance of rain before 3pm, then a chance of rain and snow between 3pm and 4pm, then snow likely after 4pm.  Partly sunny, with a high near 37. South southeast wind 5 to 8 mph becoming north northwest in the afternoon.  Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.

    Partly Sunny
    then
    Rain/Snow
    Likely

    High: 37 °F

  • Wednesday
    Night

    Wednesday Night: Snow.  Low around 14. North northwest wind around 10 mph.  Chance of precipitation is 90%. New snow accumulation of 2 to 4 inches possible.

    Snow



    Low: 14 °F

  • Thursday

    Thursday: A 50 percent chance of snow, mainly before noon.  Cloudy, with a high near 22. North northwest wind around 10 mph.  New snow accumulation of less than one inch possible.

    Chance Snow
    then Slight
    Chance Snow

    High: 22 °F

  • Thursday
    Night

    Thursday Night: Mostly cloudy, with a low around 3. North northwest wind around 6 mph becoming light and variable  in the evening.

    Mostly Cloudy



    Low: 3 °F

  • Friday

    Friday: A 30 percent chance of snow after noon.  Mostly cloudy, with a high near 20. Calm wind becoming east 5 to 9 mph in the afternoon.  New snow accumulation of less than a half inch possible.

    Partly Sunny
    then Chance
    Snow

    High: 20 °F

  • Friday
    Night

    Friday Night: Snow.  Low around 5. East wind around 8 mph.  Chance of precipitation is 80%. New snow accumulation of 3 to 5 inches possible.

    Snow



    Low: 5 °F

  • Saturday

    Saturday: Snow likely.  Cloudy, with a high near 14. North wind 7 to 11 mph.

    Snow Likely



    High: 14 °F

  • Saturday
    Night

    Saturday Night: A chance of snow.  Mostly cloudy, with a low around -2.

    Chance Snow



    Low: -2 °F



  • Tonight: A chance of snow between midnight and 4am. Mostly cloudy, with a low around 22. Southeast wind 5 to 7 mph. Chance of precipitation is 30%. Total nighttime snow accumulation of less than a half inch possible.

    Wednesday: A chance of rain before 3pm, then a chance of rain and snow between 3pm and 4pm, then snow likely after 4pm. Partly sunny, with a high near 37. South southeast wind 5 to 8 mph becoming north northwest in the afternoon. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.

    Wednesday Night: Snow. Low around 14. North northwest wind around 10 mph. Chance of precipitation is 90%. New snow accumulation of 2 to 4 inches possible.

    Thursday: A 50 percent chance of snow, mainly before noon. Cloudy, with a high near 22. North northwest wind around 10 mph. New snow accumulation of less than one inch possible.

    Thursday Night: Mostly cloudy, with a low around 3. North northwest wind around 6 mph becoming light and variable in the evening.

    Friday: A 30 percent chance of snow after noon. Mostly cloudy, with a high near 20. Calm wind becoming east 5 to 9 mph in the afternoon. New snow accumulation of less than a half inch possible.

    Friday Night: Snow. Low around 5. East wind around 8 mph. Chance of precipitation is 80%. New snow accumulation of 3 to 5 inches possible.

    Saturday: Snow likely. Cloudy, with a high near 14. North wind 7 to 11 mph.

    Saturday Night: A chance of snow. Mostly cloudy, with a low around -2.

    Sunday: Partly sunny, with a high near 13.

    Sunday Night: Partly cloudy, with a low around -2.

    Monday: Mostly sunny, with a high near 28.

    Monday Night: Mostly cloudy, with a low around 12.

    Tuesday: Partly sunny, with a high near 38.



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

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