Severe Weather in the Central U.S.; Heavy Rain in the Ohio Valley and Mid-Atlantic

Scattered severe thunderstorms capable of producing severe gusts, large hail, and perhaps a couple tornadoes are forecast from the north-central High Plains into the Upper Mississippi Valley. Widespread thunderstorms may produce excessive rainfall across portions of the Ohio Valley and Mid-Atlantic. Hot conditions and Critical Fire Weather looms over the Great Basin and Southwest through midweek. Read More >

Current conditions at

Lewistown, Lewistown Municipal Airport (KLWT)

Lat: 47.04917°NLon: 109.46639°WElev: 4167.0ft.

Partly Cloudy

59°F

15°C

Humidity 77%
Wind Speed W 3 MPH
Barometer 30.09 in (1018.96 mb)
Dewpoint 52°F (11°C)
Visibility 10.00 mi
Last update 16 Jun 10:54 AM MDT
Extended Forecast for

8 Miles NW Lewistown Municipal MT

  • Today

    Today: A chance of showers and thunderstorms before 1pm, then showers likely and possibly a thunderstorm between 1pm and 2pm, then a chance of showers and thunderstorms after 2pm.  Mostly cloudy, with a high near 72. Light and variable wind becoming north northwest around 5 mph in the afternoon.  Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 72 °F

    Showers
    Likely

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms, mainly between 7pm and 8pm.  Mostly cloudy, with a low around 47. West southwest wind around 6 mph becoming calm  in the evening.

    Low: 47 °F

    Chance
    Showers then
    Partly Cloudy

  • Tuesday

    Tuesday: A slight chance of showers, then a chance of showers and thunderstorms after noon.  Partly sunny, with a high near 75. Calm wind becoming west northwest around 6 mph in the morning.  Chance of precipitation is 40%.

    High: 75 °F

    Chance
    Showers

  • Tuesday Night

    Tuesday Night: A 20 percent chance of showers before midnight.  Mostly clear, with a low around 48. South wind around 6 mph.

    Low: 48 °F

    Slight Chance
    Showers then
    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 77. Southwest wind 6 to 8 mph becoming west northwest in the afternoon.

    High: 77 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 49. Northwest wind 5 to 7 mph becoming south southeast in the evening.

    Low: 49 °F

    Mostly Clear

  • Juneteenth

    Juneteenth: Sunny, with a high near 80. Light and variable wind becoming north northeast around 6 mph in the afternoon.

    High: 80 °F

    Sunny

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms.  Mostly cloudy, with a low around 51. East northeast wind 5 to 8 mph becoming south southeast after midnight.

    Low: 51 °F

    Chance
    Showers

  • Friday

    Friday: A slight chance of showers, then a chance of showers and thunderstorms after noon.  Partly sunny, with a high near 78.

    High: 78 °F

    Slight Chance
    Showers then
    Chance
    T-storms

Detailed Forecast

Today
A chance of showers and thunderstorms before 1pm, then showers likely and possibly a thunderstorm between 1pm and 2pm, then a chance of showers and thunderstorms after 2pm. Mostly cloudy, with a high near 72. Light and variable wind becoming north northwest around 5 mph in the afternoon. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tonight
A 30 percent chance of showers and thunderstorms, mainly between 7pm and 8pm. Mostly cloudy, with a low around 47. West southwest wind around 6 mph becoming calm in the evening.
Tuesday
A slight chance of showers, then a chance of showers and thunderstorms after noon. Partly sunny, with a high near 75. Calm wind becoming west northwest around 6 mph in the morning. Chance of precipitation is 40%.
Tuesday Night
A 20 percent chance of showers before midnight. Mostly clear, with a low around 48. South wind around 6 mph.
Wednesday
Sunny, with a high near 77. Southwest wind 6 to 8 mph becoming west northwest in the afternoon.
Wednesday Night
Mostly clear, with a low around 49. Northwest wind 5 to 7 mph becoming south southeast in the evening.
Juneteenth
Sunny, with a high near 80. Light and variable wind becoming north northeast around 6 mph in the afternoon.
Thursday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 51. East northeast wind 5 to 8 mph becoming south southeast after midnight.
Friday
A slight chance of showers, then a chance of showers and thunderstorms after noon. Partly sunny, with a high near 78.
Friday Night
Showers likely and possibly a thunderstorm before midnight, then a chance of showers. Mostly cloudy, with a low around 49.
Saturday
A chance of showers and thunderstorms. Partly sunny, with a high near 69.
Saturday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 39.
Sunday
Showers likely. Mostly cloudy, with a high near 54.
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ABOUT THIS FORECAST

 
Point Forecast:
8 Miles NW Lewistown Municipal MT
 47.12°N 109.56°W (Elev. 3707 ft)
9:01 am MDT Jun 16, 2025
11am MDT Jun 16, 2025-6pm MDT Jun 22, 2025
 
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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