National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Significant Flooding to Continue Across Portions of the South; Another Round of Heavy Snows Across the Desert Southwest through Tonight

Periods of heavy rainfall will continue to enhance river flooding and the risk for flash flooding from the Ohio and Mississippi Valleys to the Deep South through this weekend. Additionally, severe thunderstorms with damaging winds and a few tornadoes are possible across this region on Saturday. Heavy snows, even in lower elevations, return to the Desert Southwest through tonight. Read More >

Hazardous Weather Conditions

Current conditions at

Lewistown, Lewistown Municipal Airport (KLWT)

Lat: 47.04917°NLon: 109.46639°WElev: 4167ft.

Lt Snow, Freezing Fog

-13°C

8°F

Humidity 91%
Wind Speed WNW 13 MPH
Barometer 30.02 in (1023.2 mb)
Dewpoint -14°C (6°F)
Visibility 0.80 km
Wind Chill-22°C (-8°F)
Last update 21 Feb 8:54 am MST
Extended Forecast for

Lewistown MT

Winter Weather Advisory until February 21, 11:00am
Click here for hazard details and duration
...
  •  
    Winter Weather Advisory until February 21, 11:00am

    NOW until
    11:00am Thu

    Winter Weather Advisory

  • Today

    Today: Snow likely, mainly before 1pm. Patchy blowing snow between 11am and 1pm. Cloudy and cold, with a temperature falling to around -16 by 5pm. Wind chill values as low as -22. West northwest wind 14 to 18 km/h. Chance of precipitation is 70%. Total daytime snow accumulation of less than a half centimeter possible.

    Snow Likely
    and Patchy
    Blowing Snow

    High: -13 °C⇓

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming clear, with a low around -22. Wind chill values as low as -29. South southeast wind 8 to 11 km/h.

    Decreasing
    Clouds

    Low: -22 °C

  • Friday

    Friday: Sunny, with a high near -5. Wind chill values as low as -28. South wind 11 to 16 km/h becoming west southwest in the afternoon.

    Sunny

    High: -5 °C

  • Friday
    Night

    Friday Night: Patchy blowing snow after 10pm. Partly cloudy, with a low around -12. Wind chill values as low as -19. Southwest wind 14 to 18 km/h.

    Patchy
    Blowing Snow

    Low: -12 °C

  • Saturday

    Saturday: A 20 percent chance of snow after 11am. Partly sunny, with a high near -5. West southwest wind 21 to 23 km/h becoming northwest in the afternoon. Winds could gust as high as 34 km/h.

    Slight Chance
    Snow

    High: -5 °C

  • Saturday
    Night

    Saturday Night: A 30 percent chance of snow. Cloudy, with a low around -21. New snow accumulation of around a centimeter possible.

    Chance Snow

    Low: -21 °C

  • Sunday

    Sunday: A 30 percent chance of snow. Mostly cloudy and cold, with a high near -17. New snow accumulation of around a centimeter possible.

    Chance Snow

    High: -17 °C

  • Sunday
    Night

    Sunday Night: A chance of snow. Cloudy, with a low around -26.

    Chance Snow

    Low: -26 °C

Detailed Forecast

Today
Snow likely, mainly before 1pm. Patchy blowing snow between 11am and 1pm. Cloudy and cold, with a temperature falling to around -16 by 5pm. Wind chill values as low as -22. West northwest wind 14 to 18 km/h. Chance of precipitation is 70%. Total daytime snow accumulation of less than a half centimeter possible.
Tonight
Mostly cloudy, then gradually becoming clear, with a low around -22. Wind chill values as low as -29. South southeast wind 8 to 11 km/h.
Friday
Sunny, with a high near -5. Wind chill values as low as -28. South wind 11 to 16 km/h becoming west southwest in the afternoon.
Friday Night
Patchy blowing snow after 10pm. Partly cloudy, with a low around -12. Wind chill values as low as -19. Southwest wind 14 to 18 km/h.
Saturday
A 20 percent chance of snow after 11am. Partly sunny, with a high near -5. West southwest wind 21 to 23 km/h becoming northwest in the afternoon. Winds could gust as high as 34 km/h.
Saturday Night
A 30 percent chance of snow. Cloudy, with a low around -21. New snow accumulation of around a centimeter possible.
Sunday
A 30 percent chance of snow. Mostly cloudy and cold, with a high near -17. New snow accumulation of around a centimeter possible.
Sunday Night
A chance of snow. Cloudy, with a low around -26.
Monday
A chance of snow. Cloudy and cold, with a high near -18.
Monday Night
A chance of snow. Cloudy, with a low around -26.
Tuesday
Partly sunny and cold, with a high near -16.
Tuesday Night
A slight chance of snow. Partly cloudy, with a low around -23.
Wednesday
Mostly sunny, with a high near -9.
Click Map For Forecast
Disclaimer
Map Legend
Point Forecast:
Lewistown MT
 47.07°N 109.43°W (Elev. 1188 m)
Last Update:
8:56 am MST Feb 21, 2019
Forecast Valid:
9am MST Feb 21, 2019-6pm MST Feb 27, 2019
 
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