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Current conditions at

Lewistown, Lewistown Municipal Airport (KLWT)

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

Clear

0°F

-18°C

Humidity 70%
Wind Speed W 5 MPH
Barometer 30.3 in (1026.08 mb)
Dewpoint -8°F (-22°C)
Visibility 10.00 mi
Wind Chill-11°F (-24°C)
Last update 23 Jan 02:05 PM MST
Extended Forecast for

Lewistown MT

  • This Afternoon

    This Afternoon: Partly sunny, with a high near 7. Wind chill values as low as zero. Light west northwest wind.

    High: 7 °F

    Partly Sunny

  • Tonight

    Tonight: Increasing clouds, with a temperature falling to near -4 by 11pm, then rising to around 4 during the remainder of the night. Wind chill values as low as -15. Calm wind becoming south southeast around 5 mph after midnight.

    Low: -4 °F⇑

    Increasing
    Clouds

  • Saturday

    Saturday: Snow likely, mainly after 11am. Cloudy, with a high near 19. Wind chill values as low as -5. West southwest wind 6 to 14 mph becoming northwest in the morning. Winds could gust as high as 25 mph. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.

    High: 19 °F

    Snow Likely

  • Saturday Night

    Saturday Night: Snow, mainly before 11pm. Low around -4. Northwest wind 5 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 80%. New snow accumulation of less than one inch possible.

    Low: -4 °F

    Snow then
    Chance Snow

  • Sunday

    Sunday: Mostly sunny, with a high near 25. Southwest wind 3 to 6 mph.

    High: 25 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 13. West southwest wind around 9 mph.

    Low: 13 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 37. West wind 6 to 8 mph.

    High: 37 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 15. West wind around 7 mph.

    Low: 15 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 35.

    High: 35 °F

    Partly Sunny

Detailed Forecast

This Afternoon
Partly sunny, with a high near 7. Wind chill values as low as zero. Light west northwest wind.
Tonight
Increasing clouds, with a temperature falling to near -4 by 11pm, then rising to around 4 during the remainder of the night. Wind chill values as low as -15. Calm wind becoming south southeast around 5 mph after midnight.
Saturday
Snow likely, mainly after 11am. Cloudy, with a high near 19. Wind chill values as low as -5. West southwest wind 6 to 14 mph becoming northwest in the morning. Winds could gust as high as 25 mph. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.
Saturday Night
Snow, mainly before 11pm. Low around -4. Northwest wind 5 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 80%. New snow accumulation of less than one inch possible.
Sunday
Mostly sunny, with a high near 25. Southwest wind 3 to 6 mph.
Sunday Night
Mostly clear, with a low around 13. West southwest wind around 9 mph.
Monday
Mostly sunny, with a high near 37. West wind 6 to 8 mph.
Monday Night
Mostly cloudy, with a low around 15. West wind around 7 mph.
Tuesday
Partly sunny, with a high near 35.
Tuesday Night
Partly cloudy, with a low around 16.
Wednesday
Partly sunny, with a high near 37.
Wednesday Night
Mostly cloudy, with a low around 17.
Thursday
Partly sunny, with a high near 37.
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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:
3:22 am MST Jan 23, 2026
Forecast Valid:
2pm MST Jan 23, 2026-6pm MST Jan 29, 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