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

Areas of Severe Thunderstorms and Heavy Rain Possible through the Weekend

There will be daily chances for scattered thunderstorms across portions of the Central and Eastern U.S. through the weekend, with severe thunderstorms possible in the northern Plains and Upper Midwest. Potential severe storm hazards may include large hail, damaging winds, and a few tornadoes. Storms could also produce heavy rain that may lead to isolated instances of flash flooding. Read More >

Current conditions at

Lewistown, Lewistown Municipal Airport (KLWT)

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

NA

N/A

Humidity NA
Wind Speed NA NA MPH
Barometer 30.04 in (1017.27 mb)
Dewpoint N/A
Visibility NA
Last update NA
Extended Forecast for

Lewistown MT

  • Tonight

    Tonight: Mostly clear, with a low around 47. North northwest wind 5 to 9 mph becoming light and variable in the evening. Winds could gust as high as 21 mph.

    Low: 47 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 74. Light and variable wind becoming northwest 5 to 10 mph in the morning. Winds could gust as high as 20 mph.

    High: 74 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 48. Northwest wind 5 to 10 mph becoming light and variable in the evening. Winds could gust as high as 18 mph.

    Low: 48 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 85. South southeast wind 3 to 6 mph.

    High: 85 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 56. Southeast wind 6 to 8 mph.

    Low: 56 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 88. Light and variable wind becoming north northeast around 6 mph in the afternoon.

    High: 88 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 59. Northeast wind around 7 mph becoming south southeast after midnight.

    Low: 59 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A slight chance of showers after noon. Mostly sunny, with a high near 90. East southeast wind 3 to 8 mph. Winds could gust as high as 18 mph.

    High: 90 °F

    Mostly Sunny
    then Slight
    Chance
    Showers

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 60.

    Low: 60 °F

    Chance
    T-storms then
    Mostly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 47. North northwest wind 5 to 9 mph becoming light and variable in the evening. Winds could gust as high as 21 mph.
Sunday
Sunny, with a high near 74. Light and variable wind becoming northwest 5 to 10 mph in the morning. Winds could gust as high as 20 mph.
Sunday Night
Mostly clear, with a low around 48. Northwest wind 5 to 10 mph becoming light and variable in the evening. Winds could gust as high as 18 mph.
Monday
Sunny, with a high near 85. South southeast wind 3 to 6 mph.
Monday Night
Mostly clear, with a low around 56. Southeast wind 6 to 8 mph.
Tuesday
Sunny, with a high near 88. Light and variable wind becoming north northeast around 6 mph in the afternoon.
Tuesday Night
Partly cloudy, with a low around 59. Northeast wind around 7 mph becoming south southeast after midnight.
Wednesday
A slight chance of showers after noon. Mostly sunny, with a high near 90. East southeast wind 3 to 8 mph. Winds could gust as high as 18 mph.
Wednesday Night
A chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 60.
Thursday
A chance of showers and thunderstorms after noon. Partly sunny, with a high near 87.
Thursday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 58.
Independence Day
A chance of showers and thunderstorms. Mostly sunny, with a high near 82.
Friday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 55.
Saturday
A chance of showers. Mostly sunny, with a high near 80.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Lewistown MT
 47.07°N 109.43°W (Elev. 3898 ft)
Last Update:
5:16 pm MDT Jun 28, 2025
Forecast Valid:
7pm MDT Jun 28, 2025-6pm MDT Jul 5, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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