Severe Weather and Heavy Rain from the Great Lakes to the Mid-Atlantic; Heat Persists in the East

Widespread strong thunderstorms with damaging winds and locally heavy rain are expected from the Upper Ohio Valley into the southern Mid-Atlantic today and portions of the central Appalachians and Carolinas on Saturday. Monsoonal moisture will bring a flash flooding threat to the Desert Southwest. Sweltering heat persists from the Plains to the southern Mid-Atlantic through tonight. Read More >

Current conditions at

Lewistown Divide MT-200 MP 90.3 (MTLEW)

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

NA

45°F

7°C

Humidity 75%
Wind Speed NW 4 MPH
Barometer NA
Dewpoint 37°F (3°C)
Visibility NA
Wind Chill43°F (6°C)
Last update 05 Sep 07:00 AM MDT
Extended Forecast for

5 Miles WSW Lewistown Municipal MT

  • Today

    Today: Sunny, with a high near 76. Calm wind becoming northeast 5 to 9 mph in the afternoon.

    High: 76 °F

    Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 48. East northeast wind 5 to 9 mph becoming calm  after midnight.

    Low: 48 °F

    Increasing
    Clouds

  • Sunday

    Sunday: A 20 percent chance of showers and thunderstorms after 5pm.  Mostly sunny, with a high near 77. Calm wind becoming north northeast 5 to 8 mph in the afternoon.

    High: 77 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Sunday Night

    Sunday Night: Showers and possibly a thunderstorm before 3am, then rain after 3am.  Low around 50. North northeast wind 5 to 9 mph becoming light and variable  after midnight.  Chance of precipitation is 90%.

    Low: 50 °F

    Showers

  • Labor Day

    Labor Day: Rain likely, then showers and possibly a thunderstorm after noon.  High near 69. Light west northwest wind becoming west 6 to 11 mph in the afternoon. Winds could gust as high as 22 mph.  Chance of precipitation is 80%.

    High: 69 °F

    Showers

  • Monday Night

    Monday Night: Showers likely and possibly a thunderstorm before 9pm, then rain likely, mainly between 9pm and midnight.  Mostly cloudy, with a low around 44. Breezy, with a west southwest wind 17 to 22 mph, with gusts as high as 36 mph.  Chance of precipitation is 60%.

    Low: 44 °F

    Showers
    Likely and
    Breezy

  • Tuesday

    Tuesday: A 40 percent chance of rain before noon.  Partly sunny, with a high near 67. Breezy, with a west wind 23 to 25 mph, with gusts as high as 37 mph.

    High: 67 °F

    Breezy.
    Chance Rain
    then Mostly
    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 43. Northwest wind 12 to 17 mph becoming west northwest 5 to 10 mph in the evening. Winds could gust as high as 29 mph.

    Low: 43 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 76.

    High: 76 °F

    Mostly Sunny

Detailed Forecast

Today
Sunny, with a high near 76. Calm wind becoming northeast 5 to 9 mph in the afternoon.
Tonight
Increasing clouds, with a low around 48. East northeast wind 5 to 9 mph becoming calm after midnight.
Sunday
A 20 percent chance of showers and thunderstorms after 5pm. Mostly sunny, with a high near 77. Calm wind becoming north northeast 5 to 8 mph in the afternoon.
Sunday Night
Showers and possibly a thunderstorm before 3am, then rain after 3am. Low around 50. North northeast wind 5 to 9 mph becoming light and variable after midnight. Chance of precipitation is 90%.
Labor Day
Rain likely, then showers and possibly a thunderstorm after noon. High near 69. Light west northwest wind becoming west 6 to 11 mph in the afternoon. Winds could gust as high as 22 mph. Chance of precipitation is 80%.
Monday Night
Showers likely and possibly a thunderstorm before 9pm, then rain likely, mainly between 9pm and midnight. Mostly cloudy, with a low around 44. Breezy, with a west southwest wind 17 to 22 mph, with gusts as high as 36 mph. Chance of precipitation is 60%.
Tuesday
A 40 percent chance of rain before noon. Partly sunny, with a high near 67. Breezy, with a west wind 23 to 25 mph, with gusts as high as 37 mph.
Tuesday Night
Partly cloudy, with a low around 43. Northwest wind 12 to 17 mph becoming west northwest 5 to 10 mph in the evening. Winds could gust as high as 29 mph.
Wednesday
Mostly sunny, with a high near 76.
Wednesday Night
Partly cloudy, with a low around 48.
Thursday
Mostly sunny, with a high near 78.
Thursday Night
Partly cloudy, with a low around 48.
Friday
A slight chance of showers. Mostly sunny, with a high near 73.
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles WSW Lewistown Municipal MT
 47.04°N 109.55°W (Elev. 4091 ft)
5:26 am MDT Sep 5, 2026
7am MDT Sep 5, 2026-6pm MDT Sep 11, 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