Dangerous Heat over the South-Central and Southwest U.S. Through Next Week

Dangerous heat persists across the Desert Southwest through this weekend and across the Southern Plains and Lower Mississippi Valley through at least the middle of next week. Numerous daily record high temperatures are expected through at least Tuesday for much of Texas and Oklahoma as well as portions of Louisiana, New Mexico, and Arizona. 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

Lewistown MT

  • This Afternoon

    This Afternoon: Sunny, with a high near 86. Light northeast wind becoming east 6 to 11 mph.

    High: 86 °F

    Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 59. East southeast wind 11 to 17 mph, with gusts as high as 31 mph.

    Low: 59 °F

    Increasing
    Clouds

  • Saturday

    Saturday: A slight chance of showers between 9am and noon.  Partly sunny, with a high near 90. East southeast wind 7 to 9 mph becoming south southwest in the afternoon.  Chance of precipitation is 20%.

    High: 90 °F

    Slight Chance
    Showers then
    Mostly Cloudy

  • Saturday Night

    Saturday Night: A 20 percent chance of showers and thunderstorms before midnight.  Increasing clouds, with a low around 59. South southeast wind 3 to 7 mph.

    Low: 59 °F

    Slight Chance
    T-storms then
    Cloudy

  • Sunday

    Sunday: A chance of showers between noon and 3pm, then a chance of showers and thunderstorms after 3pm.  Partly sunny, with a high near 91. Calm wind becoming west 5 to 8 mph in the afternoon. Winds could gust as high as 18 mph.  Chance of precipitation is 30%.

    High: 91 °F

    Partly Sunny
    then Chance
    Showers

  • Sunday Night

    Sunday Night: A slight chance of showers and thunderstorms before 9pm, then a slight chance of showers between 9pm and midnight.  Partly cloudy, with a low around 54. West wind 5 to 9 mph becoming calm  after midnight. Winds could gust as high as 18 mph.  Chance of precipitation is 20%.

    Low: 54 °F

    Slight Chance
    T-storms then
    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 82. Light and variable wind becoming northwest 5 to 9 mph in the afternoon. Winds could gust as high as 18 mph.

    High: 82 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 51. North northwest wind 5 to 8 mph becoming light and variable  in the evening.

    Low: 51 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 85.

    High: 85 °F

    Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 86. Light northeast wind becoming east 6 to 11 mph.
Tonight
Increasing clouds, with a low around 59. East southeast wind 11 to 17 mph, with gusts as high as 31 mph.
Saturday
A slight chance of showers between 9am and noon. Partly sunny, with a high near 90. East southeast wind 7 to 9 mph becoming south southwest in the afternoon. Chance of precipitation is 20%.
Saturday Night
A 20 percent chance of showers and thunderstorms before midnight. Increasing clouds, with a low around 59. South southeast wind 3 to 7 mph.
Sunday
A chance of showers between noon and 3pm, then a chance of showers and thunderstorms after 3pm. Partly sunny, with a high near 91. Calm wind becoming west 5 to 8 mph in the afternoon. Winds could gust as high as 18 mph. Chance of precipitation is 30%.
Sunday Night
A slight chance of showers and thunderstorms before 9pm, then a slight chance of showers between 9pm and midnight. Partly cloudy, with a low around 54. West wind 5 to 9 mph becoming calm after midnight. Winds could gust as high as 18 mph. Chance of precipitation is 20%.
Monday
Sunny, with a high near 82. Light and variable wind becoming northwest 5 to 9 mph in the afternoon. Winds could gust as high as 18 mph.
Monday Night
Mostly clear, with a low around 51. North northwest wind 5 to 8 mph becoming light and variable in the evening.
Tuesday
Sunny, with a high near 85.
Tuesday Night
Mostly clear, with a low around 54.
Wednesday
Mostly sunny, with a high near 88.
Wednesday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 54.
Thursday
Mostly sunny, with a high near 84.
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ABOUT THIS FORECAST

 
Point Forecast:
Lewistown MT
 47.09°N 109.46°W (Elev. 3898 ft)
12:31 pm MDT Aug 21, 2026
1pm MDT Aug 21, 2026-6pm MDT Aug 27, 2026
 
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Additional Resources

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