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.

Mostly Cloudy

N/A

Humidity 36%
Wind Speed WNW 16 MPH
Barometer NA
Dewpoint N/A
Visibility 10.00 mi
Last update 07 May 12:54 PM MDT
Extended Forecast for

6 Miles N Lewistown MT

  • Today

    Today: A 40 percent chance of showers and thunderstorms after noon. Partly sunny, with a high near 84. Calm wind becoming south southeast 5 to 7 mph in the afternoon.

    High: 84 °F

    Partly Sunny
    then Chance
    T-storms

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms, mainly before 7pm. Partly cloudy, with a low around 56. Southeast wind around 6 mph becoming calm after midnight.

    Low: 56 °F

    Chance
    Showers then
    Partly Cloudy

  • Thursday

    Thursday: A chance of showers between noon and 3pm, then a chance of showers and thunderstorms after 3pm. Mostly sunny, with a high near 88. Calm wind becoming southeast around 5 mph in the afternoon. Chance of precipitation is 30%.

    High: 88 °F

    Mostly Sunny
    then Chance
    T-storms

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms before 9pm, then a chance of showers between 9pm and midnight. Mostly cloudy, with a low around 58. East southeast wind 5 to 7 mph. Chance of precipitation is 30%.

    Low: 58 °F

    Chance
    T-storms then
    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 88. Calm wind becoming east southeast around 6 mph in the afternoon.

    High: 88 °F

    Mostly Sunny

  • Friday Night

    Friday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 54. South southeast wind 5 to 7 mph becoming light and variable after midnight. Chance of precipitation is 50%.

    Low: 54 °F

    Chance
    Showers

  • Saturday

    Saturday: Showers and possibly a thunderstorm. High near 71. Light west southwest wind becoming northwest 5 to 10 mph in the morning. Winds could gust as high as 21 mph. Chance of precipitation is 90%.

    High: 71 °F

    Showers

  • Saturday Night

    Saturday Night: Showers and possibly a thunderstorm before midnight, then rain likely after midnight. Mostly cloudy, with a low around 46. West wind 10 to 13 mph, with gusts as high as 22 mph.

    Low: 46 °F

    Showers

  • Sunday

    Sunday: Rain likely before noon, then a chance of showers and thunderstorms after noon. Mostly cloudy, with a high near 64.

    High: 64 °F

    Showers
    Likely

Detailed Forecast

Today
A 40 percent chance of showers and thunderstorms after noon. Partly sunny, with a high near 84. Calm wind becoming south southeast 5 to 7 mph in the afternoon.
Tonight
A 30 percent chance of showers and thunderstorms, mainly before 7pm. Partly cloudy, with a low around 56. Southeast wind around 6 mph becoming calm after midnight.
Thursday
A chance of showers between noon and 3pm, then a chance of showers and thunderstorms after 3pm. Mostly sunny, with a high near 88. Calm wind becoming southeast around 5 mph in the afternoon. Chance of precipitation is 30%.
Thursday Night
A chance of showers and thunderstorms before 9pm, then a chance of showers between 9pm and midnight. Mostly cloudy, with a low around 58. East southeast wind 5 to 7 mph. Chance of precipitation is 30%.
Friday
Mostly sunny, with a high near 88. Calm wind becoming east southeast around 6 mph in the afternoon.
Friday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 54. South southeast wind 5 to 7 mph becoming light and variable after midnight. Chance of precipitation is 50%.
Saturday
Showers and possibly a thunderstorm. High near 71. Light west southwest wind becoming northwest 5 to 10 mph in the morning. Winds could gust as high as 21 mph. Chance of precipitation is 90%.
Saturday Night
Showers and possibly a thunderstorm before midnight, then rain likely after midnight. Mostly cloudy, with a low around 46. West wind 10 to 13 mph, with gusts as high as 22 mph.
Sunday
Rain likely before noon, then a chance of showers and thunderstorms after noon. Mostly cloudy, with a high near 64.
Sunday Night
A chance of showers and thunderstorms before midnight, then a slight chance of rain after midnight. Mostly cloudy, with a low around 43.
Monday
A chance of rain and thunderstorms. Partly sunny, with a high near 67.
Monday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 44.
Tuesday
A chance of rain and thunderstorms. Mostly sunny, with a high near 69.
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ABOUT THIS FORECAST

 
Point Forecast:
6 Miles N Lewistown MT
 47.15°N 109.44°W (Elev. 4094 ft)
Last Update:
4:27 am MDT May 27, 2026
Forecast Valid:
5am MDT May 27, 2026-6pm MDT Jun 2, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation