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 Divide MT-200 MP 90.3 (MTLEW)

Lat: 47.07579°NLon: 109.26247°WElev: 4723.0ft.

NA

81°F

27°C

Humidity 30%
Wind Speed ESE 12 MPH
Barometer NA
Dewpoint 47°F (8°C)
Visibility NA
Heat Index80°F (27°C)
Last update 21 Aug 03:15 PM MDT
Extended Forecast for

6 Miles SE Lewistown MT

  • Tonight

    Tonight: Partly cloudy, with a low around 59. East wind 11 to 15 mph, with gusts as high as 28 mph.

    Low: 59 °F

    Partly Cloudy

  • Saturday

    Saturday: A slight chance of showers between 10am and noon.  Increasing clouds, with a high near 88. East southeast wind 7 to 9 mph becoming south in the afternoon. Winds could gust as high as 18 mph.  Chance of precipitation is 20%.

    High: 88 °F

    Slight Chance
    Showers then
    Mostly Cloudy

  • Saturday Night

    Saturday Night: A 20 percent chance of showers and thunderstorms before midnight.  Mostly cloudy, with a low around 60. Southeast wind 5 to 7 mph becoming southwest after midnight.

    Low: 60 °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.  Mostly cloudy through mid morning, then becoming sunny, with a high near 89. Light southwest wind becoming west 5 to 9 mph in the afternoon. Winds could gust as high as 18 mph.  Chance of precipitation is 30%.

    High: 89 °F

    Mostly 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 55. Southwest wind 6 to 8 mph, with gusts as high as 18 mph.  Chance of precipitation is 20%.

    Low: 55 °F

    Slight Chance
    T-storms then
    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 81. West southwest wind 6 to 9 mph becoming northwest in the afternoon. Winds could gust as high as 20 mph.

    High: 81 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 52. North northwest wind 5 to 8 mph becoming light and variable  after midnight.

    Low: 52 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 83. Calm wind becoming north around 5 mph in the afternoon.

    High: 83 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 55.

    Low: 55 °F

    Mostly Clear

Detailed Forecast

Tonight
Partly cloudy, with a low around 59. East wind 11 to 15 mph, with gusts as high as 28 mph.
Saturday
A slight chance of showers between 10am and noon. Increasing clouds, with a high near 88. East southeast wind 7 to 9 mph becoming south in the afternoon. Winds could gust as high as 18 mph. Chance of precipitation is 20%.
Saturday Night
A 20 percent chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 60. Southeast wind 5 to 7 mph becoming southwest after midnight.
Sunday
A chance of showers between noon and 3pm, then a chance of showers and thunderstorms after 3pm. Mostly cloudy through mid morning, then becoming sunny, with a high near 89. Light southwest wind becoming west 5 to 9 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 55. Southwest wind 6 to 8 mph, with gusts as high as 18 mph. Chance of precipitation is 20%.
Monday
Sunny, with a high near 81. West southwest wind 6 to 9 mph becoming northwest in the afternoon. Winds could gust as high as 20 mph.
Monday Night
Partly cloudy, with a low around 52. North northwest wind 5 to 8 mph becoming light and variable after midnight.
Tuesday
Sunny, with a high near 83. Calm wind becoming north around 5 mph in the afternoon.
Tuesday Night
Mostly clear, with a low around 55.
Wednesday
Mostly sunny, with a high near 86.
Wednesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 55.
Thursday
Mostly sunny, with a high near 82.
Thursday Night
A slight chance of showers. Partly cloudy, with a low around 53.
Friday
Mostly sunny, with a high near 82.
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ABOUT THIS FORECAST

 
Point Forecast:
6 Miles SE Lewistown MT
 47.01°N 109.36°W (Elev. 4196 ft)
12:31 pm MDT Aug 21, 2026
3pm MDT Aug 21, 2026-6pm MDT Aug 28, 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