Extreme Heat in the Southwest; Severe Weather in the Northern Plains; Heavy Rain in the East

Extreme heat continues across the Southwest as temperatures may top 120 degrees. The heat may expand across the West and south-central U.S. into the middle of the month. Severe thunderstorms capable of severe wind gusts and large hail will be the primary hazards today across the northern Plains into the upper Midwest. Rainfall could be locally heavy across the Eastern U.S. today. Read More >

Current conditions at

Lewistown, Lewistown Municipal Airport (KLWT)

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

Clear

N/A

Humidity 59%
Wind Speed N 0 MPH
Barometer NA
Dewpoint N/A
Visibility 10.00 mi
Last update 30 Jul 04:50 AM MDT
Extended Forecast for

8 Miles NW Lewistown Municipal MT

  • Tonight

    Tonight: Mostly clear, with a low around 39. North northwest wind 5 to 14 mph becoming south southeast after midnight. Winds could gust as high as 26 mph.

    Low: 39 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 74. Light and variable wind becoming north northwest 5 to 7 mph in the afternoon.

    High: 74 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Clear, then becoming mostly cloudy toward daybreak, with a low around 44. North wind around 6 mph becoming south southeast after midnight.

    Low: 44 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, then gradually becoming sunny, with a high near 83. South southeast wind 5 to 7 mph becoming calm.

    High: 83 °F

    Decreasing
    Clouds

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 49. North northwest wind 5 to 8 mph becoming light and variable.

    Low: 49 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 92. Light and variable wind becoming northwest 5 to 7 mph in the afternoon.

    High: 92 °F

    Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 53. North northwest wind 5 to 9 mph becoming south southeast after midnight.

    Low: 53 °F

    Clear

  • Friday

    Friday: Sunny and hot, with a high near 96. Light and variable wind becoming north northwest 5 to 9 mph in the afternoon. Winds could gust as high as 20 mph.

    High: 96 °F

    Hot

  • Friday Night

    Friday Night: Mostly clear, with a low around 56.

    Low: 56 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 39. North northwest wind 5 to 14 mph becoming south southeast after midnight. Winds could gust as high as 26 mph.
Tuesday
Sunny, with a high near 74. Light and variable wind becoming north northwest 5 to 7 mph in the afternoon.
Tuesday Night
Clear, then becoming mostly cloudy toward daybreak, with a low around 44. North wind around 6 mph becoming south southeast after midnight.
Wednesday
Mostly cloudy, then gradually becoming sunny, with a high near 83. South southeast wind 5 to 7 mph becoming calm.
Wednesday Night
Mostly clear, with a low around 49. North northwest wind 5 to 8 mph becoming light and variable.
Thursday
Sunny, with a high near 92. Light and variable wind becoming northwest 5 to 7 mph in the afternoon.
Thursday Night
Clear, with a low around 53. North northwest wind 5 to 9 mph becoming south southeast after midnight.
Friday
Sunny and hot, with a high near 96. Light and variable wind becoming north northwest 5 to 9 mph in the afternoon. Winds could gust as high as 20 mph.
Friday Night
Mostly clear, with a low around 56.
Saturday
Sunny, with a high near 93.
Saturday Night
Partly cloudy, with a low around 56.
Sunday
Sunny, with a high near 88.
Sunday Night
A slight chance of showers. Partly cloudy, with a low around 54.
Monday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 84.
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ABOUT THIS FORECAST

 
Point Forecast:
8 Miles NW Lewistown Municipal MT
 47.12°N 109.56°W (Elev. 3707 ft)
4:11 pm MDT Aug 3, 2026
6pm MDT Aug 3, 2026-6pm MDT Aug 10, 2026
 
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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