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 48%
Wind Speed NW 1 MPH
Barometer NA
Dewpoint 39°F (4°C)
Visibility NA
Last update 19 Aug 12:15 AM MDT
Extended Forecast for

4 Miles ENE Lewistown MT

  • Overnight

    Overnight: Mostly clear, with a low around 54. South wind around 7 mph.

    Low: 54 °F

    Mostly Clear

  • Wednesday

    Wednesday: Patchy smoke after 11am. Sunny, with a high near 83. South southwest wind 6 to 14 mph becoming northwest in the afternoon. Winds could gust as high as 23 mph.

    High: 83 °F

    Patchy Smoke

  • Wednesday Night

    Wednesday Night: Patchy smoke before 8pm. Increasing clouds, with a low around 54. Northwest wind 5 to 10 mph becoming light and variable.

    Low: 54 °F

    Patchy Smoke
    then Mostly
    Clear

  • Thursday

    Thursday: Sunny, with a high near 88. East southeast wind 5 to 8 mph becoming light and variable.

    High: 88 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 56. Northwest wind around 5 mph becoming calm  after midnight.

    Low: 56 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 84. Calm wind becoming east northeast 5 to 9 mph in the afternoon.

    High: 84 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 57. East southeast wind 9 to 13 mph, with gusts as high as 22 mph.

    Low: 57 °F

    Partly Cloudy

  • Saturday

    Saturday: A slight chance of showers after noon.  Partly sunny, with a high near 86. East southeast wind 6 to 8 mph becoming south in the afternoon. Winds could gust as high as 18 mph.

    High: 86 °F

    Partly Sunny
    then Slight
    Chance
    Showers

  • Saturday Night

    Saturday Night: A chance of showers before midnight.  Mostly cloudy, with a low around 57.

    Low: 57 °F

    Chance
    Showers then
    Mostly Cloudy

Detailed Forecast

Overnight
Mostly clear, with a low around 54. South wind around 7 mph.
Wednesday
Patchy smoke after 11am. Sunny, with a high near 83. South southwest wind 6 to 14 mph becoming northwest in the afternoon. Winds could gust as high as 23 mph.
Wednesday Night
Patchy smoke before 8pm. Increasing clouds, with a low around 54. Northwest wind 5 to 10 mph becoming light and variable.
Thursday
Sunny, with a high near 88. East southeast wind 5 to 8 mph becoming light and variable.
Thursday Night
Mostly clear, with a low around 56. Northwest wind around 5 mph becoming calm after midnight.
Friday
Sunny, with a high near 84. Calm wind becoming east northeast 5 to 9 mph in the afternoon.
Friday Night
Partly cloudy, with a low around 57. East southeast wind 9 to 13 mph, with gusts as high as 22 mph.
Saturday
A slight chance of showers after noon. Partly sunny, with a high near 86. East southeast wind 6 to 8 mph becoming south in the afternoon. Winds could gust as high as 18 mph.
Saturday Night
A chance of showers before midnight. Mostly cloudy, with a low around 57.
Sunday
A slight chance of showers and thunderstorms after noon. Mostly sunny, with a high near 84.
Sunday Night
A slight chance of showers. Mostly clear, with a low around 53.
Monday
Sunny, with a high near 82.
Monday Night
Partly cloudy, with a low around 55.
Tuesday
Mostly sunny, with a high near 85.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles ENE Lewistown MT
 47.07°N 109.37°W (Elev. 4098 ft)
12:31 am MDT Aug 19, 2026
12am MDT Aug 19, 2026-6pm MDT Aug 25, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database