Unsettled Weather in the West; Marine and Coastal Impacts Along the East Coast

A series of Pacific fronts will bring periodic waves of showers and thunderstorms to parts of the Great Basin and Pacific Northwest the next few days. Swells, high surf, dangerous rip currents and areas of coastal flooding continue along much of the East Coast from both Humberto and Imelda. Unseasonably hot temperatures continue for much of the Plains and Midwest through the remainder of the week. Read More >

Current conditions at

Lewistown, Lewistown Municipal Airport (KLWT)

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

Clear

41°F

5°C

Humidity 75%
Wind Speed ESE 4 MPH
Barometer 30.04 in (1017.27 mb)
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Wind Chill38°F (3°C)
Last update 02 Oct 04:55 AM MDT
Extended Forecast for

Lewistown MT

  • Today

    Today: Increasing clouds, with a high near 73. Light and variable wind becoming west southwest around 6 mph in the afternoon.

    High: 73 °F

    Increasing
    Clouds

  • Tonight

    Tonight: A 40 percent chance of rain between 11pm and 3am.  Mostly cloudy, with a low around 45. Southwest wind around 5 mph becoming calm  in the evening.

    Low: 45 °F

    Chance Rain

  • Friday

    Friday: A 20 percent chance of rain.  Cloudy, then gradually becoming mostly sunny, with a high near 71. Calm wind becoming north northwest 5 to 7 mph in the afternoon.

    High: 71 °F

    Slight Chance
    Rain

  • Friday Night

    Friday Night: Rain.  Low around 43. West wind 3 to 8 mph.  Chance of precipitation is 80%.

    Low: 43 °F

    Rain

  • Saturday

    Saturday: Rain likely.  Cloudy, with a high near 56. West wind 5 to 11 mph, with gusts as high as 21 mph.  Chance of precipitation is 70%.

    High: 56 °F

    Rain Likely

  • Saturday Night

    Saturday Night: Rain likely, mainly before midnight.  Mostly cloudy, with a low around 31. North northwest wind 6 to 10 mph, with gusts as high as 20 mph.  Chance of precipitation is 70%.

    Low: 31 °F

    Rain Likely

  • Sunday

    Sunday: A 40 percent chance of rain.  Partly sunny, with a high near 47. Northwest wind 6 to 9 mph.

    High: 47 °F

    Chance Rain

  • Sunday Night

    Sunday Night: A slight chance of rain before midnight.  Partly cloudy, with a low around 25. Northwest wind around 6 mph becoming south southeast after midnight.

    Low: 25 °F

    Slight Chance
    Rain then
    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 56.

    High: 56 °F

    Sunny

Detailed Forecast

Today
Increasing clouds, with a high near 73. Light and variable wind becoming west southwest around 6 mph in the afternoon.
Tonight
A 40 percent chance of rain between 11pm and 3am. Mostly cloudy, with a low around 45. Southwest wind around 5 mph becoming calm in the evening.
Friday
A 20 percent chance of rain. Cloudy, then gradually becoming mostly sunny, with a high near 71. Calm wind becoming north northwest 5 to 7 mph in the afternoon.
Friday Night
Rain. Low around 43. West wind 3 to 8 mph. Chance of precipitation is 80%.
Saturday
Rain likely. Cloudy, with a high near 56. West wind 5 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 70%.
Saturday Night
Rain likely, mainly before midnight. Mostly cloudy, with a low around 31. North northwest wind 6 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 70%.
Sunday
A 40 percent chance of rain. Partly sunny, with a high near 47. Northwest wind 6 to 9 mph.
Sunday Night
A slight chance of rain before midnight. Partly cloudy, with a low around 25. Northwest wind around 6 mph becoming south southeast after midnight.
Monday
Sunny, with a high near 56.
Monday Night
Mostly clear, with a low around 30.
Tuesday
Sunny, with a high near 61.
Tuesday Night
Mostly clear, with a low around 36.
Wednesday
Sunny, with a high near 68.
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ABOUT THIS FORECAST

 
Point Forecast:
Lewistown MT
 47.07°N 109.43°W (Elev. 3898 ft)
2:27 am MDT Oct 2, 2025
5am MDT Oct 2, 2025-6pm MDT Oct 8, 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