Severe Thunderstorms and Excessive Rainfall in the Central U.S.; Heat Building in the Western U.S.

A cold front pressing east across the central U.S. will be the focus for areas of strong to severe thunderstorms and excessive rainfall through this weekend. Strong to severe thunderstorms my bring damaging winds, hail, and a few tornadoes while excessive rainfall may lead to areas of flooding. Heat will build across the western U.S. with heat-related watches, warnings, and advisories issued. Read More >

Current conditions at

Lewistown, Lewistown Municipal Airport (KLWT)

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

Clear

70°F

21°C

Humidity 46%
Wind Speed N 0 MPH
Barometer 30.12 in (1019.98 mb)
Dewpoint 48°F (9°C)
Visibility 10.00 mi
Last update 13 Jul 08:30 AM MDT
Extended Forecast for

Lewistown Municipal MT

  • Today

    Today: Sunny, with a high near 88. West southwest wind 6 to 10 mph becoming northwest in the afternoon. Winds could gust as high as 20 mph.

    High: 88 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 57. North northwest wind 6 to 9 mph becoming south southeast in the evening.

    Low: 57 °F

    Mostly Clear

  • Monday

    Monday: A slight chance of showers between noon and 3pm, then a slight chance of showers and thunderstorms after 3pm.  Sunny, with a high near 88. South wind 5 to 13 mph becoming north northwest in the afternoon. Winds could gust as high as 20 mph.  Chance of precipitation is 20%.

    High: 88 °F

    Sunny then
    Slight Chance
    T-storms

  • Monday Night

    Monday Night: Showers likely and possibly a thunderstorm.  Mostly cloudy, with a low around 48. North wind 11 to 14 mph, with gusts as high as 24 mph.  Chance of precipitation is 70%.

    Low: 48 °F

    Showers
    Likely

  • Tuesday

    Tuesday: Showers likely, with thunderstorms also possible after 3pm.  Mostly cloudy, with a high near 58. East northeast wind around 11 mph, with gusts as high as 22 mph.  Chance of precipitation is 70%.

    High: 58 °F

    Showers
    Likely

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms.  Mostly cloudy, with a low around 44. East northeast wind 6 to 11 mph, with gusts as high as 21 mph.  Chance of precipitation is 50%.

    Low: 44 °F

    Chance
    Showers

  • Wednesday

    Wednesday: A chance of showers, with thunderstorms also possible after noon.  Partly sunny, with a high near 62. East northeast wind 6 to 8 mph.  Chance of precipitation is 40%.

    High: 62 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 43. Southeast wind 6 to 8 mph.

    Low: 43 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 76.

    High: 76 °F

    Sunny

Detailed Forecast

Today
Sunny, with a high near 88. West southwest wind 6 to 10 mph becoming northwest in the afternoon. Winds could gust as high as 20 mph.
Tonight
Mostly clear, with a low around 57. North northwest wind 6 to 9 mph becoming south southeast in the evening.
Monday
A slight chance of showers between noon and 3pm, then a slight chance of showers and thunderstorms after 3pm. Sunny, with a high near 88. South wind 5 to 13 mph becoming north northwest in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 20%.
Monday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 48. North wind 11 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 70%.
Tuesday
Showers likely, with thunderstorms also possible after 3pm. Mostly cloudy, with a high near 58. East northeast wind around 11 mph, with gusts as high as 22 mph. Chance of precipitation is 70%.
Tuesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 44. East northeast wind 6 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 50%.
Wednesday
A chance of showers, with thunderstorms also possible after noon. Partly sunny, with a high near 62. East northeast wind 6 to 8 mph. Chance of precipitation is 40%.
Wednesday Night
Partly cloudy, with a low around 43. Southeast wind 6 to 8 mph.
Thursday
Sunny, with a high near 76.
Thursday Night
Partly cloudy, with a low around 49.
Friday
Mostly sunny, with a high near 79.
Friday Night
Mostly clear, with a low around 52.
Saturday
Sunny, with a high near 84.
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ABOUT THIS FORECAST

 
Point Forecast:
Lewistown Municipal MT
 47.04°N 109.45°W (Elev. 4111 ft)
6:32 am MDT Jul 13, 2025
8am MDT Jul 13, 2025-6pm MDT Jul 19, 2025
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database