Winter Storm System To Bring Widespread Impacts Across the Eastern Half of the U.S. Through Midweek

A developing winter storm system will bring a swath of heavy snow and ice from Oklahoma into the Midwest, Ohio Valley, Mid Atlantic, and the Northeast U.S. Tuesday through Wednesday. Areas of dangerous travel are likely. Further South, several inches of heavy rain will lead to the potential for flooding in the lower Mississippi and Tennessee River Valleys. Read More >

Current conditions at

Lewistown, Lewistown Municipal Airport (KLWT)

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

Fair

-11°F

-24°C

Humidity 83%
Wind Speed SSE 8 MPH
Barometer 30.02 in
Dewpoint -15°F (-26°C)
Visibility 10.00 mi
Wind Chill-28°F (-33°C)
Last update 18 Feb 11:35 pm MST
Extended Forecast for

Lewistown MT

  • Tonight

    Tonight: Clear, with a temperature rising to around -10 by 5am. Wind chill values as low as -30. South southeast wind 6 to 8 mph.

    Clear

    Low: -14 °F

  • Tuesday

    Tuesday: Sunny, with a high near 23. Wind chill values as low as -25. South wind around 8 mph becoming west in the morning.

    Sunny

    High: 23 °F

  • Tuesday
    Night

    Tuesday Night: A 20 percent chance of snow after 11pm.  Increasing clouds, with a low around 2. Wind chill values as low as -12. Southwest wind 6 to 8 mph.

    Slight Chance
    Snow

    Low: 2 °F

  • Wednesday

    Wednesday: A 40 percent chance of snow.  Mostly cloudy, with a high near 24. Wind chill values as low as zero. West southwest wind 6 to 10 mph becoming northwest in the afternoon.  New snow accumulation of less than a half inch possible.

    Chance Snow

    High: 24 °F

  • Wednesday
    Night

    Wednesday Night: A 50 percent chance of snow.  Cloudy, with a low around 6. Northwest wind 6 to 8 mph.  New snow accumulation of around an inch possible.

    Chance Snow

    Low: 6 °F

  • Thursday

    Thursday: Snow likely, mainly before 11am.  Mostly cloudy, with a high near 15. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.

    Snow Likely

    High: 15 °F

  • Thursday
    Night

    Thursday Night: Mostly cloudy, with a low around -7.

    Mostly Cloudy

    Low: -7 °F

  • Friday

    Friday: Sunny, with a high near 22.

    Sunny

    High: 22 °F

  • Friday
    Night

    Friday Night: Partly cloudy, with a low around 3.

    Partly Cloudy

    Low: 3 °F

Detailed Forecast

Tonight
Clear, with a temperature rising to around -10 by 5am. Wind chill values as low as -30. South southeast wind 6 to 8 mph.
Tuesday
Sunny, with a high near 23. Wind chill values as low as -25. South wind around 8 mph becoming west in the morning.
Tuesday Night
A 20 percent chance of snow after 11pm. Increasing clouds, with a low around 2. Wind chill values as low as -12. Southwest wind 6 to 8 mph.
Wednesday
A 40 percent chance of snow. Mostly cloudy, with a high near 24. Wind chill values as low as zero. West southwest wind 6 to 10 mph becoming northwest in the afternoon. New snow accumulation of less than a half inch possible.
Wednesday Night
A 50 percent chance of snow. Cloudy, with a low around 6. Northwest wind 6 to 8 mph. New snow accumulation of around an inch possible.
Thursday
Snow likely, mainly before 11am. Mostly cloudy, with a high near 15. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.
Thursday Night
Mostly cloudy, with a low around -7.
Friday
Sunny, with a high near 22.
Friday Night
Partly cloudy, with a low around 3.
Saturday
Partly sunny, with a high near 26.
Saturday Night
Mostly cloudy, with a low around 5.
Sunday
A slight chance of snow. Mostly cloudy, with a high near 18.
Sunday Night
A slight chance of snow. Mostly cloudy, with a low around -5.
Monday
A slight chance of snow. Mostly cloudy and cold, with a high near 10.
Click Map For Forecast
Point Forecast:
Lewistown MT
 47.07°N 109.43°W (Elev. 3898 ft)
8:21 pm MST Feb 18, 2019
11pm MST Feb 18, 2019-6pm MST Feb 25, 2019
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database