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Current conditions at

Lewistown, Lewistown Municipal Airport (KLWT)

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

light snow,mist

6°F

-14°C

Humidity 86%
Wind Speed W 9 MPH
Barometer 30.06 in (1017.95 mb)
Dewpoint 3°F (-16°C)
Visibility 3.00 mi
Wind Chill-8°F (-22°C)
Last update 24 Jan 06:54 PM MST
Extended Forecast for

Lewistown MT

Winter Weather Advisory January 24, 07:14pm until January 25, 05:00am
Click here for hazard details and duration
Winter Weather Advisory
  •  
    Winter Weather Advisory January 24, 07:14pm until January 25, 05:00am

    NOW until 5:00am Sun

    Winter Weather Advisory

  • Tonight

    Low: -8 °F

    Snow

  • Sunday

    Sunday: A 20 percent chance of snow before 11am.  Mostly cloudy, then gradually becoming sunny, with a high near 18. Wind chill values as low as -5. Calm wind becoming south southwest around 6 mph in the afternoon.

    High: 18 °F

    Slight Chance
    Snow then
    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a temperature falling to near 9 by 8pm, then rising to around 19 during the remainder of the night. Wind chill values as low as -5. Southeast wind 8 to 10 mph becoming southwest after midnight.

    Low: 9 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 38. West wind 8 to 10 mph, with gusts as high as 21 mph.

    High: 38 °F

    Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 21. West southwest wind around 8 mph.

    Low: 21 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 40. West southwest wind around 7 mph.

    High: 40 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 21. South southwest wind around 6 mph.

    Low: 21 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 45. South southwest wind around 6 mph.

    High: 45 °F

    Mostly Sunny

Detailed Forecast

Tonight
Snow. Low around -8. Northwest wind 3 to 7 mph. Chance of precipitation is 80%. Total nighttime snow accumulation of around an inch possible.
Sunday
A 20 percent chance of snow before 11am. Mostly cloudy, then gradually becoming sunny, with a high near 18. Wind chill values as low as -5. Calm wind becoming south southwest around 6 mph in the afternoon.
Sunday Night
Mostly clear, with a temperature falling to near 9 by 8pm, then rising to around 19 during the remainder of the night. Wind chill values as low as -5. Southeast wind 8 to 10 mph becoming southwest after midnight.
Monday
Sunny, with a high near 38. West wind 8 to 10 mph, with gusts as high as 21 mph.
Monday Night
Mostly cloudy, with a low around 21. West southwest wind around 8 mph.
Tuesday
Mostly sunny, with a high near 40. West southwest wind around 7 mph.
Tuesday Night
Partly cloudy, with a low around 21. South southwest wind around 6 mph.
Wednesday
Mostly sunny, with a high near 45. South southwest wind around 6 mph.
Wednesday Night
Mostly cloudy, with a low around 23.
Thursday
Partly sunny, with a high near 44.
Thursday Night
Mostly cloudy, with a low around 23.
Friday
Partly sunny, with a high near 46.
Friday Night
Mostly cloudy, with a low around 27.
Saturday
Mostly sunny, with a high near 49.
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ABOUT THIS FORECAST

 
Point Forecast:
Lewistown MT
 47.07°N 109.43°W (Elev. 3898 ft)
3:34 pm MST Jan 24, 2026
7pm MST Jan 24, 2026-6pm MST Jan 31, 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