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Tracking Areas of Fire Weather, Severe Weather, and Winter Weather

Gusty winds and dry conditions will continue to bring fire weather concerns to the southern Plains through Friday. Severe thunderstorms including a few tornadoes, large hail and damaging wind gusts are expected across parts of the Midwest and lower Ohio Valley today. A Pacific storm will bring low elevation rain and thunderstorms across southern California and heavy snow through the Sierra. Read More >

Current conditions at

Lewistown, Lewistown Municipal Airport (KLWT)

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

Clear

3°F

-16°C

Humidity 61%
Wind Speed N 4 MPH
Barometer 29.78 in (1008.47 mb)
Dewpoint -7°F (-22°C)
Visibility 10.00 mi
Wind Chill-5°F (-21°C)
Last update 19 Feb 01:54 PM MST
Extended Forecast for

Lewistown Municipal MT

  • This Afternoon

    This Afternoon: Partly sunny, with a high near 6. Wind chill values as low as zero. Light north northeast wind.

    High: 6 °F

    Partly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around -5. Wind chill values as low as -15. East southeast wind around 6 mph.

    Low: -5 °F

    Mostly Clear

  • Friday

    Friday: A slight chance of snow before 3pm, then a chance of snow after 5pm. Increasing clouds, with a high near 28. Wind chill values as low as -10. Southeast wind around 5 mph becoming calm in the afternoon. Chance of precipitation is 30%. New snow accumulation of less than a half inch possible.

    High: 28 °F

    Sunny then
    Chance Snow

  • Friday Night

    Friday Night: Snow likely, mainly before 8pm. Mostly cloudy, with a low around 4. Southwest wind around 6 mph. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.

    Low: 4 °F

    Snow Likely
    then Chance
    Snow

  • Saturday

    Saturday: Mostly sunny, with a high near 28. West southwest wind around 5 mph becoming light and variable in the morning.

    High: 28 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 8. Northeast wind around 6 mph becoming southeast after midnight.

    Low: 8 °F

    Partly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 37. Southeast wind 6 to 9 mph.

    High: 37 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 18. South southwest wind 9 to 11 mph, with gusts as high as 18 mph.

    Low: 18 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 51.

    High: 51 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Partly sunny, with a high near 6. Wind chill values as low as zero. Light north northeast wind.
Tonight
Mostly clear, with a low around -5. Wind chill values as low as -15. East southeast wind around 6 mph.
Friday
A slight chance of snow before 3pm, then a chance of snow after 5pm. Increasing clouds, with a high near 28. Wind chill values as low as -10. Southeast wind around 5 mph becoming calm in the afternoon. Chance of precipitation is 30%. New snow accumulation of less than a half inch possible.
Friday Night
Snow likely, mainly before 8pm. Mostly cloudy, with a low around 4. Southwest wind around 6 mph. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.
Saturday
Mostly sunny, with a high near 28. West southwest wind around 5 mph becoming light and variable in the morning.
Saturday Night
Partly cloudy, with a low around 8. Northeast wind around 6 mph becoming southeast after midnight.
Sunday
Partly sunny, with a high near 37. Southeast wind 6 to 9 mph.
Sunday Night
Mostly clear, with a low around 18. South southwest wind 9 to 11 mph, with gusts as high as 18 mph.
Monday
Mostly sunny, with a high near 51.
Monday Night
Mostly cloudy, with a low around 30.
Tuesday
A slight chance of rain and snow. Mostly cloudy, with a high near 45.
Tuesday Night
A slight chance of snow. Partly cloudy, with a low around 24.
Wednesday
A slight chance of snow. Mostly sunny, with a high near 46.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Lewistown Municipal MT
 47.04°N 109.45°W (Elev. 4111 ft)
Last Update:
12:37 pm MST Feb 19, 2026
Forecast Valid:
2pm MST Feb 19, 2026-6pm MST Feb 25, 2026
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation