National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Lewistown, Lewistown Municipal Airport (KLWT)

Lat: 47.04917°NLon: 109.46639°WElev: 4167.0ft.

Clear

45°F

7°C

Humidity 52%
Wind Speed SSW 16 MPH
Barometer 29.8 in (1009.14 mb)
Dewpoint 28°F (-2°C)
Visibility 10.00 mi
Wind Chill38°F (3°C)
Last update 14 Apr 08:20 AM MDT
Extended Forecast for

Lewistown Municipal MT

  • Today

    Today: Mostly sunny, with a high near 60. West wind 10 to 16 mph, with gusts as high as 23 mph.

    High: 60 °F

    Mostly Sunny

  • Tonight

    Tonight: A slight chance of rain between 4am and 5am. Mostly cloudy, with a low around 36. Southwest wind 11 to 16 mph decreasing to 5 to 10 mph in the evening. Winds could gust as high as 23 mph. Chance of precipitation is 20%.

    Low: 36 °F

    Mostly Cloudy
    then Slight
    Chance Rain

  • Wednesday

    Wednesday: A slight chance of rain before 11am, then a chance of rain after noon. Mostly cloudy, with a high near 58. Southwest wind 8 to 13 mph, with gusts as high as 20 mph. Chance of precipitation is 50%.

    High: 58 °F

    Slight Chance
    Rain then
    Chance Rain

  • Wednesday Night

    Wednesday Night: Rain before midnight, then rain and snow. Some thunder is also possible. Low around 28. South wind 8 to 15 mph, with gusts as high as 23 mph. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.

    Low: 28 °F

    Showers then
    Rain/Snow

  • Thursday

    Thursday: Snow likely. Mostly cloudy, with a high near 37. West northwest wind 16 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.

    High: 37 °F

    Snow Likely

  • Thursday Night

    Thursday Night: A 20 percent chance of snow before midnight. Mostly cloudy, with a low around 16. Northwest wind 10 to 18 mph, with gusts as high as 28 mph.

    Low: 16 °F

    Slight Chance
    Snow then
    Mostly Cloudy

  • Friday

    Friday: A 40 percent chance of snow after noon. Partly sunny, with a high near 42. West wind 10 to 16 mph, with gusts as high as 26 mph. Little or no snow accumulation expected.

    High: 42 °F

    Mostly Sunny
    then Chance
    Snow

  • Friday Night

    Friday Night: A slight chance of snow before midnight. Partly cloudy, with a low around 23. North northwest wind 6 to 14 mph becoming west southwest after midnight. Winds could gust as high as 23 mph.

    Low: 23 °F

    Slight Chance
    Snow then
    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 51.

    High: 51 °F

    Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 60. West wind 10 to 16 mph, with gusts as high as 23 mph.
Tonight
A slight chance of rain between 4am and 5am. Mostly cloudy, with a low around 36. Southwest wind 11 to 16 mph decreasing to 5 to 10 mph in the evening. Winds could gust as high as 23 mph. Chance of precipitation is 20%.
Wednesday
A slight chance of rain before 11am, then a chance of rain after noon. Mostly cloudy, with a high near 58. Southwest wind 8 to 13 mph, with gusts as high as 20 mph. Chance of precipitation is 50%.
Wednesday Night
Rain before midnight, then rain and snow. Some thunder is also possible. Low around 28. South wind 8 to 15 mph, with gusts as high as 23 mph. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.
Thursday
Snow likely. Mostly cloudy, with a high near 37. West northwest wind 16 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.
Thursday Night
A 20 percent chance of snow before midnight. Mostly cloudy, with a low around 16. Northwest wind 10 to 18 mph, with gusts as high as 28 mph.
Friday
A 40 percent chance of snow after noon. Partly sunny, with a high near 42. West wind 10 to 16 mph, with gusts as high as 26 mph. Little or no snow accumulation expected.
Friday Night
A slight chance of snow before midnight. Partly cloudy, with a low around 23. North northwest wind 6 to 14 mph becoming west southwest after midnight. Winds could gust as high as 23 mph.
Saturday
Sunny, with a high near 51.
Saturday Night
Mostly clear, with a low around 29.
Sunday
Sunny, with a high near 63.
Sunday Night
Partly cloudy, with a low around 38.
Monday
A slight chance of rain. Mostly sunny, with a high near 69.
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ABOUT THIS FORECAST

 
Point Forecast:
Lewistown Municipal MT
 47.04°N 109.45°W (Elev. 4111 ft)
Last Update:
3:12 am MDT Apr 14, 2026
Forecast Valid:
8am MDT Apr 14, 2026-6pm MDT Apr 20, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation