Thunderstorms and Heavy Rain in the Mid-South; Heat Continues in the Southeast and Southwest

Severe thunderstorms and heavy rain are expected across portions of the mid-Mississippi Valley into the Ohio Valley and portions of Arizona. Dangerous heat persists in the South and Southeast while building into the Southwest. Overnight lows will be so warm that, when combined with oppressive dew points, little-to-no relief from the scorching daytime highs will be available. Read More >

Current conditions at

Lewistown Divide MT-200 MP 90.3 (MTLEW)

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

NA

59°F

15°C

Humidity 47%
Wind Speed NNW 0 MPH
Barometer NA
Dewpoint 39°F (4°C)
Visibility NA
Last update 19 Aug 01:00 AM MDT
Extended Forecast for

9 Miles ENE Lewistown MT

  • Overnight

    Overnight: Mostly clear, with a low around 56. West southwest wind around 8 mph.

    Low: 56 °F

    Mostly Clear

  • Wednesday

    Wednesday: Patchy smoke after 11am. Partly sunny, then gradually becoming sunny, with a high near 75. West northwest wind 9 to 14 mph, with gusts as high as 24 mph.

    High: 75 °F

    Patchy Smoke

  • Wednesday Night

    Wednesday Night: Patchy smoke before 8pm. Mostly clear, with a low around 57. Northwest wind 5 to 11 mph becoming southeast after midnight.

    Low: 57 °F

    Patchy Smoke
    then Mostly
    Clear

  • Thursday

    Thursday: Sunny, with a high near 80. Southeast wind 5 to 7 mph becoming west northwest in the afternoon.

    High: 80 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 59. Northwest wind around 5 mph becoming south after midnight.

    Low: 59 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 75. South southwest wind 5 to 9 mph becoming northeast in the morning. Winds could gust as high as 20 mph.

    High: 75 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 60. East wind 11 to 13 mph, with gusts as high as 23 mph.

    Low: 60 °F

    Partly Cloudy

  • Saturday

    Saturday: A slight chance of showers.  Partly sunny, with a high near 77. East southeast wind around 10 mph, with gusts as high as 22 mph.

    High: 77 °F

    Slight Chance
    Showers

  • Saturday Night

    Saturday Night: A chance of showers before midnight.  Mostly cloudy, with a low around 61.

    Low: 61 °F

    Chance
    Showers then
    Mostly Cloudy

Detailed Forecast

Overnight
Mostly clear, with a low around 56. West southwest wind around 8 mph.
Wednesday
Patchy smoke after 11am. Partly sunny, then gradually becoming sunny, with a high near 75. West northwest wind 9 to 14 mph, with gusts as high as 24 mph.
Wednesday Night
Patchy smoke before 8pm. Mostly clear, with a low around 57. Northwest wind 5 to 11 mph becoming southeast after midnight.
Thursday
Sunny, with a high near 80. Southeast wind 5 to 7 mph becoming west northwest in the afternoon.
Thursday Night
Mostly clear, with a low around 59. Northwest wind around 5 mph becoming south after midnight.
Friday
Sunny, with a high near 75. South southwest wind 5 to 9 mph becoming northeast in the morning. Winds could gust as high as 20 mph.
Friday Night
Partly cloudy, with a low around 60. East wind 11 to 13 mph, with gusts as high as 23 mph.
Saturday
A slight chance of showers. Partly sunny, with a high near 77. East southeast wind around 10 mph, with gusts as high as 22 mph.
Saturday Night
A chance of showers before midnight. Mostly cloudy, with a low around 61.
Sunday
A slight chance of showers and thunderstorms after noon. Mostly sunny, with a high near 76.
Sunday Night
A slight chance of showers. Mostly clear, with a low around 55.
Monday
Sunny, with a high near 75.
Monday Night
Partly cloudy, with a low around 57.
Tuesday
Mostly sunny, with a high near 77.
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ABOUT THIS FORECAST

 
Point Forecast:
9 Miles ENE Lewistown MT
 47.1°N 109.25°W (Elev. 5325 ft)
12:31 am MDT Aug 19, 2026
1am MDT Aug 19, 2026-6pm MDT Aug 25, 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