Thunderstorms in the North Central U.S.; Dangerous Heat in Texas

There is a severe weather and isolated flooding threat from the Central to Northern Plains tonight into early Thursday. The severe weather threat will progress eastward to the Upper Mississippi Valley/Great Lakes into the Lower Ohio Valley Thursday. Major to extreme heat will continue to impact much of southern Texas into next week, where widespread record-breaking temperatures are possible. Read More >

Current conditions at

Lewistown, Lewistown Municipal Airport (KLWT)

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

Mostly Cloudy

39°F

4°C

Humidity 93%
Wind Speed SSW 9 MPH
Barometer 29.81 in (1009.48 mb)
Dewpoint 37°F (3°C)
Visibility 10.00 mi
Wind Chill33°F (1°C)
Last update 14 May 10:05 PM MDT
Extended Forecast for

Lewistown Municipal MT

  • Tonight

    Tonight: Showers likely, mainly before midnight.  Cloudy, with a low around 38. Southwest wind 8 to 11 mph, with gusts as high as 18 mph.  Chance of precipitation is 70%.

    Low: 38 °F

    Showers
    Likely

  • Thursday

    Thursday: Showers likely, mainly between noon and 5pm.  Cloudy, with a high near 53. Breezy, with a west northwest wind 13 to 22 mph, with gusts as high as 33 mph.  Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 53 °F

    Showers
    Likely and
    Breezy

  • Thursday Night

    Thursday Night: A chance of showers before 2am, then a slight chance of showers after 4am.  Mostly cloudy, with a low around 35. West northwest wind 15 to 20 mph decreasing to 8 to 13 mph after midnight. Winds could gust as high as 30 mph.  Chance of precipitation is 40%.

    Low: 35 °F

    Chance
    Showers

  • Friday

    Friday: A 50 percent chance of showers, mainly after noon.  Mostly cloudy, with a high near 57. West wind 8 to 10 mph.

    High: 57 °F

    Slight Chance
    Showers then
    Chance
    Showers

  • Friday Night

    Friday Night: A 50 percent chance of showers.  Mostly cloudy, with a low around 38. North wind around 6 mph becoming south southeast after midnight.

    Low: 38 °F

    Chance
    Showers

  • Saturday

    Saturday: A chance of showers, then showers likely and possibly a thunderstorm after noon.  Mostly cloudy, with a high near 60. East southeast wind 5 to 8 mph.  Chance of precipitation is 70%.

    High: 60 °F

    Chance
    Showers then
    Showers
    Likely

  • Saturday Night

    Saturday Night: A 40 percent chance of showers.  Mostly cloudy, with a low around 40. East wind around 10 mph, with gusts as high as 18 mph.

    Low: 40 °F

    Chance
    Showers

  • Sunday

    Sunday: A chance of showers, then showers and possibly a thunderstorm after noon.  Mostly cloudy, with a high near 57. East wind 10 to 14 mph, with gusts as high as 23 mph.

    High: 57 °F

    Showers

  • Sunday Night

    Sunday Night: Showers and possibly a thunderstorm before midnight, then showers likely.  Cloudy, with a low around 38.

    Low: 38 °F

    Showers

Detailed Forecast

Tonight
Showers likely, mainly before midnight. Cloudy, with a low around 38. Southwest wind 8 to 11 mph, with gusts as high as 18 mph. Chance of precipitation is 70%.
Thursday
Showers likely, mainly between noon and 5pm. Cloudy, with a high near 53. Breezy, with a west northwest wind 13 to 22 mph, with gusts as high as 33 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Thursday Night
A chance of showers before 2am, then a slight chance of showers after 4am. Mostly cloudy, with a low around 35. West northwest wind 15 to 20 mph decreasing to 8 to 13 mph after midnight. Winds could gust as high as 30 mph. Chance of precipitation is 40%.
Friday
A 50 percent chance of showers, mainly after noon. Mostly cloudy, with a high near 57. West wind 8 to 10 mph.
Friday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 38. North wind around 6 mph becoming south southeast after midnight.
Saturday
A chance of showers, then showers likely and possibly a thunderstorm after noon. Mostly cloudy, with a high near 60. East southeast wind 5 to 8 mph. Chance of precipitation is 70%.
Saturday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 40. East wind around 10 mph, with gusts as high as 18 mph.
Sunday
A chance of showers, then showers and possibly a thunderstorm after noon. Mostly cloudy, with a high near 57. East wind 10 to 14 mph, with gusts as high as 23 mph.
Sunday Night
Showers and possibly a thunderstorm before midnight, then showers likely. Cloudy, with a low around 38.
Monday
Showers. Mostly cloudy, with a high near 56.
Monday Night
A chance of showers. Mostly cloudy, with a low around 37.
Tuesday
Showers likely. Partly sunny, with a high near 59.
Tuesday Night
A chance of showers. Mostly cloudy, with a low around 37.
Wednesday
A chance of showers and thunderstorms. Partly sunny, with a high near 57.
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ABOUT THIS FORECAST

 
Point Forecast:
Lewistown Municipal MT
 47.06°N 109.46°W (Elev. 4098 ft)
8:03 pm MDT May 14, 2025
10pm MDT May 14, 2025-6pm MDT May 21, 2025
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database