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Current conditions at

Lewistown, Lewistown Municipal Airport (KLWT)

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

Overcast

1°F

-17°C

Humidity 70%
Wind Speed N 0 MPH
Barometer 30.03 in (1016.93 mb)
Dewpoint -6°F (-21°C)
Visibility 10.00 mi
Last update 24 Jan 02:05 AM MST
Extended Forecast for

Lewistown MT

Winter Weather Advisory January 24, 05:00am until January 25, 05:00am
Cold Weather Advisory January 24, 02:30am until January 24, 09:00am
Click here for hazard details and duration
Winter Weather Advisory
Cold Weather Advisory
  •  
    Cold Weather Advisory January 24, 02:30am until January 24, 09:00am

    NOW until 9:00am Sat

    Cold Weather Advisory

  • Overnight

    Low: -12 °F

    Chance Snow

  • Saturday

    Saturday: Snow likely, mainly after 8am.  Patchy blowing snow after 8am. Cloudy, with a high near 17. Wind chill values as low as -5. Northwest wind 7 to 14 mph, with gusts as high as 25 mph.  Chance of precipitation is 70%. New snow accumulation of 1 to 3 inches possible.

    High: 17 °F

    Snow Likely
    and Patchy
    Blowing Snow

  • Saturday Night

    Saturday Night: Snow, mainly before midnight.  Low around -7. Northwest wind 5 to 9 mph, with gusts as high as 18 mph.  Chance of precipitation is 80%. New snow accumulation of around an inch possible.

    Low: -7 °F

    Snow then
    Chance Snow

  • Sunday

    Sunday: Cloudy through mid morning, then gradual clearing, with a high near 20. Wind chill values as low as -15. Light and variable wind becoming southwest around 6 mph in the afternoon.

    High: 20 °F

    Gradual
    Clearing

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 7. Southwest wind 7 to 10 mph.

    Low: 7 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 39. West southwest wind 8 to 10 mph, with gusts as high as 21 mph.

    High: 39 °F

    Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 20. West southwest wind around 8 mph.

    Low: 20 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 41. West southwest wind around 7 mph.

    High: 41 °F

    Mostly Sunny

Detailed Forecast

Overnight
A 30 percent chance of snow, mainly after 5am. Mostly clear early, then becoming cloudy, with a low around -12. Southwest wind around 6 mph. Total nighttime snow accumulation of less than a half inch possible.
Saturday
Snow likely, mainly after 8am. Patchy blowing snow after 8am. Cloudy, with a high near 17. Wind chill values as low as -5. Northwest wind 7 to 14 mph, with gusts as high as 25 mph. Chance of precipitation is 70%. New snow accumulation of 1 to 3 inches possible.
Saturday Night
Snow, mainly before midnight. Low around -7. Northwest wind 5 to 9 mph, with gusts as high as 18 mph. Chance of precipitation is 80%. New snow accumulation of around an inch possible.
Sunday
Cloudy through mid morning, then gradual clearing, with a high near 20. Wind chill values as low as -15. Light and variable wind becoming southwest around 6 mph in the afternoon.
Sunday Night
Mostly clear, with a low around 7. Southwest wind 7 to 10 mph.
Monday
Sunny, with a high near 39. West southwest wind 8 to 10 mph, with gusts as high as 21 mph.
Monday Night
Mostly cloudy, with a low around 20. West southwest wind around 8 mph.
Tuesday
Mostly sunny, with a high near 41. West southwest wind around 7 mph.
Tuesday Night
Mostly clear, with a low around 21.
Wednesday
Mostly sunny, with a high near 44.
Wednesday Night
Mostly cloudy, with a low around 23.
Thursday
Partly sunny, with a high near 41.
Thursday Night
Mostly cloudy, with a low around 21.
Friday
Mostly sunny, with a high near 45.
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ABOUT THIS FORECAST

 
Point Forecast:
Lewistown MT
 47.07°N 109.43°W (Elev. 3898 ft)
11:52 pm MST Jan 23, 2026
2am MST Jan 24, 2026-6pm MST Jan 30, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database