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Current conditions at

Lewistown, Lewistown Municipal Airport (KLWT)

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

Overcast

12°F

-11°C

Humidity 66%
Wind Speed WNW 9 MPH
Barometer 30.2 in (1022.69 mb)
Dewpoint 3°F (-16°C)
Visibility 10.00 mi
Wind Chill-0°F (-18°C)
Last update 22 Jan 06:54 AM MST
Extended Forecast for

Lewistown MT

  • Today

    Today: A 30 percent chance of snow after 5pm.  Mostly cloudy, with a high near 16. Wind chill values as low as zero. Northwest wind 5 to 7 mph.  Total daytime snow accumulation of less than a half inch possible.

    High: 16 °F

    Partly Sunny
    then Chance
    Snow

  • Tonight

    Tonight: A 40 percent chance of snow after 2am.  Cloudy, with a low around -6. Wind chill values as low as -15. North northeast wind 5 to 7 mph becoming east southeast after midnight.  New snow accumulation of less than one inch possible.

    Low: -6 °F

    Chance Snow

  • Friday

    Friday: A 30 percent chance of snow before 11am.  Cloudy, then gradually becoming mostly sunny, with a high near 6. Wind chill values as low as -15. Light and variable wind becoming northwest around 5 mph in the afternoon.  New snow accumulation of less than a half inch possible.

    High: 6 °F

    Chance Snow
    then Partly
    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around -7. Light southwest wind.

    Low: -7 °F

    Partly Cloudy

  • Saturday

    Saturday: A 20 percent chance of snow after 11am.  Mostly cloudy, with a high near 19. Northwest wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 19 °F

    Slight Chance
    Snow

  • Saturday Night

    Saturday Night: A 30 percent chance of snow, mainly before 11pm.  Mostly cloudy, with a low around 3. West northwest wind 6 to 8 mph.  New snow accumulation of around an inch possible.

    Low: 3 °F

    Chance Snow

  • Sunday

    Sunday: Mostly sunny, with a high near 30. West southwest wind around 7 mph.

    High: 30 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 12. West southwest wind around 7 mph.

    Low: 12 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 36.

    High: 36 °F

    Sunny

Detailed Forecast

Today
A 30 percent chance of snow after 5pm. Mostly cloudy, with a high near 16. Wind chill values as low as zero. Northwest wind 5 to 7 mph. Total daytime snow accumulation of less than a half inch possible.
Tonight
A 40 percent chance of snow after 2am. Cloudy, with a low around -6. Wind chill values as low as -15. North northeast wind 5 to 7 mph becoming east southeast after midnight. New snow accumulation of less than one inch possible.
Friday
A 30 percent chance of snow before 11am. Cloudy, then gradually becoming mostly sunny, with a high near 6. Wind chill values as low as -15. Light and variable wind becoming northwest around 5 mph in the afternoon. New snow accumulation of less than a half inch possible.
Friday Night
Partly cloudy, with a low around -7. Light southwest wind.
Saturday
A 20 percent chance of snow after 11am. Mostly cloudy, with a high near 19. Northwest wind 5 to 10 mph, with gusts as high as 20 mph.
Saturday Night
A 30 percent chance of snow, mainly before 11pm. Mostly cloudy, with a low around 3. West northwest wind 6 to 8 mph. New snow accumulation of around an inch possible.
Sunday
Mostly sunny, with a high near 30. West southwest wind around 7 mph.
Sunday Night
Partly cloudy, with a low around 12. West southwest wind around 7 mph.
Monday
Sunny, with a high near 36.
Monday Night
Partly cloudy, with a low around 17.
Tuesday
A slight chance of snow. Partly sunny, with a high near 35.
Tuesday Night
A slight chance of snow. Mostly cloudy, with a low around 14.
Wednesday
A slight chance of snow. Partly sunny, with a high near 31.
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ABOUT THIS FORECAST

 
Point Forecast:
Lewistown MT
 47.07°N 109.43°W (Elev. 3898 ft)
3:27 am MST Jan 22, 2026
7am MST Jan 22, 2026-6pm MST Jan 28, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

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