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Current conditions at

Lewistown, Lewistown Municipal Airport (KLWT)

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

Overcast

20°F

-7°C

Humidity 70%
Wind Speed W 8 MPH
Barometer 30.23 in (1023.71 mb)
Dewpoint 12°F (-11°C)
Visibility 10.00 mi
Wind Chill10°F (-12°C)
Last update 21 Jan 11:54 AM MST
Extended Forecast for

Lewistown MT

  • This Afternoon

    This Afternoon: Partly sunny, with a high near 27. West northwest wind 9 to 14 mph, with gusts as high as 24 mph.

    High: 27 °F

    Partly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 6. West wind around 6 mph.

    Low: 6 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly cloudy, with a high near 16. Wind chill values as low as zero. Northwest wind 5 to 8 mph.

    High: 16 °F

    Mostly Cloudy

  • Thursday Night

    Thursday Night: A 20 percent chance of snow. Mostly cloudy, with a low around -7. North wind 5 to 7 mph becoming east after midnight.

    Low: -7 °F

    Slight Chance
    Snow

  • Friday

    Friday: Partly sunny, with a high near 10. Calm wind becoming northwest around 5 mph in the afternoon.

    High: 10 °F

    Partly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around -4. Light and variable wind becoming southwest around 5 mph after midnight.

    Low: -4 °F

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 21. West northwest wind 5 to 10 mph, with gusts as high as 18 mph.

    High: 21 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 3. West wind 6 to 8 mph.

    Low: 3 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 29.

    High: 29 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Partly sunny, with a high near 27. West northwest wind 9 to 14 mph, with gusts as high as 24 mph.
Tonight
Mostly cloudy, with a low around 6. West wind around 6 mph.
Thursday
Mostly cloudy, with a high near 16. Wind chill values as low as zero. Northwest wind 5 to 8 mph.
Thursday Night
A 20 percent chance of snow. Mostly cloudy, with a low around -7. North wind 5 to 7 mph becoming east after midnight.
Friday
Partly sunny, with a high near 10. Calm wind becoming northwest around 5 mph in the afternoon.
Friday Night
Partly cloudy, with a low around -4. Light and variable wind becoming southwest around 5 mph after midnight.
Saturday
Partly sunny, with a high near 21. West northwest wind 5 to 10 mph, with gusts as high as 18 mph.
Saturday Night
Mostly cloudy, with a low around 3. West wind 6 to 8 mph.
Sunday
Mostly sunny, with a high near 29.
Sunday Night
Partly cloudy, with a low around 12.
Monday
Mostly sunny, with a high near 40.
Monday Night
Mostly cloudy, with a low around 21.
Tuesday
Partly sunny, with a high near 39.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Lewistown MT
 47.07°N 109.43°W (Elev. 3898 ft)
Last Update:
10:00 am MST Jan 21, 2026
Forecast Valid:
12pm MST Jan 21, 2026-6pm MST Jan 27, 2026
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation