Flooding Threat Along the Gulf Coast, Southern Rockies and High Plains; Cooler Weather in the Central and Eastern U.S.

Strong thunderstorms may bring excessive rainfall and flooding over parts of the northern Gulf Coast today and over parts of the southern Rockies into the High Plains today through the weekend. A refreshingly cool and dry air mass will continue to produce below average temperatures across the central and eastern U.S. through the weekend. Read More >

Current conditions at

Lewistown, Lewistown Municipal Airport (KLWT)

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

Rain

55°F

13°C

Humidity 100%
Wind Speed N 0 MPH
Barometer 30.19 in (1022.35 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 30 Aug 05:30 AM MDT
Extended Forecast for

Lewistown MT

  • Overnight

    Overnight: A 20 percent chance of showers.  Areas of fog.  Otherwise, mostly cloudy, with a low around 55. Calm wind.

    Low: 55 °F

    Slight Chance
    Showers and
    Areas Fog

  • Saturday

    Saturday: A chance of showers and thunderstorms before 5pm, then a slight chance of showers.  Areas of fog before 10am.  Otherwise, partly sunny, with a high near 76. Light and variable wind becoming west northwest around 6 mph in the afternoon.  Chance of precipitation is 40%.

    High: 76 °F

    Chance
    Showers and
    Areas Fog

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 52. Light and variable wind becoming southeast around 6 mph in the evening.

    Low: 52 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 83. Light and variable wind becoming west northwest around 6 mph in the afternoon.

    High: 83 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 54. North northwest wind around 6 mph becoming light and variable  after midnight.

    Low: 54 °F

    Mostly Clear

  • Labor Day

    Labor Day: Sunny, with a high near 83. Calm wind becoming north northeast around 6 mph in the afternoon.

    High: 83 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 53. Northeast wind around 6 mph becoming south southeast after midnight.

    Low: 53 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 82. Light and variable wind becoming north 5 to 7 mph in the afternoon.

    High: 82 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 50.

    Low: 50 °F

    Partly Cloudy

Detailed Forecast

Overnight
A 20 percent chance of showers. Areas of fog. Otherwise, mostly cloudy, with a low around 55. Calm wind.
Saturday
A chance of showers and thunderstorms before 5pm, then a slight chance of showers. Areas of fog before 10am. Otherwise, partly sunny, with a high near 76. Light and variable wind becoming west northwest around 6 mph in the afternoon. Chance of precipitation is 40%.
Saturday Night
Mostly clear, with a low around 52. Light and variable wind becoming southeast around 6 mph in the evening.
Sunday
Sunny, with a high near 83. Light and variable wind becoming west northwest around 6 mph in the afternoon.
Sunday Night
Mostly clear, with a low around 54. North northwest wind around 6 mph becoming light and variable after midnight.
Labor Day
Sunny, with a high near 83. Calm wind becoming north northeast around 6 mph in the afternoon.
Monday Night
Mostly clear, with a low around 53. Northeast wind around 6 mph becoming south southeast after midnight.
Tuesday
Sunny, with a high near 82. Light and variable wind becoming north 5 to 7 mph in the afternoon.
Tuesday Night
Partly cloudy, with a low around 50.
Wednesday
Mostly sunny, with a high near 75.
Wednesday Night
Partly cloudy, with a low around 49.
Thursday
Sunny, with a high near 79.
Thursday Night
Mostly clear, with a low around 49.
Friday
Sunny, with a high near 80.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
Lewistown MT
 47.07°N 109.43°W (Elev. 3898 ft)
2:57 am MDT Aug 30, 2025
5am MDT Aug 30, 2025-6pm MDT Sep 5, 2025
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database