Hazardous Spring Weather Shifts to the Eastern and Northwest U.S. Wednesday

Isolated to scattered severe thunderstorms are expected Wednesday from the ArkLaTex and Lower Mississippi Valley northeastward through the Ohio Valley and Mid-Atlantic. Thunderstorms may produce heavy to excessive rain that could pose a flooding threat from east Texas into Upstate New York. A moderate atmospheric river will bring heavy snow and high winds to the Northwest U.S. Read More >

Current conditions at

Lewistown, Lewistown Municipal Airport (KLWT)

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

Partly Cloudy

21°F

-6°C

Humidity 64%
Wind Speed SW 10 MPH
Barometer 30.1 in (1019.3 mb)
Dewpoint 11°F (-12°C)
Visibility 10.00 mi
Wind Chill10°F (-12°C)
Last update 11 Mar 01:54 AM MDT
Extended Forecast for

Lewistown Municipal MT

Winter Storm Watch March 12, 06:00pm until March 14, 06:00pm
High Wind Warning March 12, 03:00am until March 12, 06:00pm
Click here for hazard details and duration
Winter Storm Watch
High Wind Warning
  • Overnight

    Overnight: Mostly clear, with a low around 16. West southwest wind around 9 mph.

    Low: 16 °F

    Mostly Clear

  • Wednesday

    Wednesday: Increasing clouds, with a high near 41. Breezy, with a west wind 9 to 14 mph increasing to 18 to 23 mph in the morning. Winds could gust as high as 36 mph.

    High: 41 °F

    Partly Sunny
    then Partly
    Sunny and
    Breezy

  • Wednesday Night

    Wednesday Night: A chance of snow before midnight, then a slight chance of rain and snow between midnight and 3am, then a slight chance of rain after 3am.  Cloudy, with a low around 31. Breezy, with a west southwest wind 11 to 16 mph becoming west southwest 23 to 28 mph after midnight. Winds could gust as high as 44 mph.  Chance of precipitation is 40%. New snow accumulation of less than a half inch possible.

    Low: 31 °F

    Chance Snow
    then Slight
    Chance
    Rain/Snow and
    Breezy

  • Thursday

    Thursday: A chance of rain before noon, then snow.  High near 47. Windy, with a west wind 30 to 37 mph, with gusts as high as 55 mph.  Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.

    High: 47 °F

    Windy. Chance
    Rain then
    Snow

  • Thursday Night

    Thursday Night: Snow.  Low around 24. Blustery, with a west wind 19 to 24 mph decreasing to 9 to 14 mph after midnight. Winds could gust as high as 37 mph.  Chance of precipitation is 100%. New snow accumulation of 2 to 4 inches possible.

    Low: 24 °F

    Snow and
    Blustery

  • Friday

    Friday: Snow.  High near 34. West northwest wind around 11 mph, with gusts as high as 20 mph.  Chance of precipitation is 100%. New snow accumulation of 3 to 5 inches possible.

    High: 34 °F

    Snow

  • Friday Night

    Friday Night: Snow.  Low around 20. North wind around 9 mph becoming southeast after midnight.  Chance of precipitation is 100%. New snow accumulation of 2 to 4 inches possible.

    Low: 20 °F

    Snow

  • Saturday

    Saturday: Snow.  Cloudy, with a high near 34. East southeast wind 8 to 14 mph becoming north northwest in the afternoon. Winds could gust as high as 23 mph.

    High: 34 °F

    Snow

  • Saturday Night

    Saturday Night: Snow, mainly before midnight.  Cloudy, with a low around 7.

    Low: 7 °F

    Snow

Detailed Forecast

Overnight
Mostly clear, with a low around 16. West southwest wind around 9 mph.
Wednesday
Increasing clouds, with a high near 41. Breezy, with a west wind 9 to 14 mph increasing to 18 to 23 mph in the morning. Winds could gust as high as 36 mph.
Wednesday Night
A chance of snow before midnight, then a slight chance of rain and snow between midnight and 3am, then a slight chance of rain after 3am. Cloudy, with a low around 31. Breezy, with a west southwest wind 11 to 16 mph becoming west southwest 23 to 28 mph after midnight. Winds could gust as high as 44 mph. Chance of precipitation is 40%. New snow accumulation of less than a half inch possible.
Thursday
A chance of rain before noon, then snow. High near 47. Windy, with a west wind 30 to 37 mph, with gusts as high as 55 mph. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.
Thursday Night
Snow. Low around 24. Blustery, with a west wind 19 to 24 mph decreasing to 9 to 14 mph after midnight. Winds could gust as high as 37 mph. Chance of precipitation is 100%. New snow accumulation of 2 to 4 inches possible.
Friday
Snow. High near 34. West northwest wind around 11 mph, with gusts as high as 20 mph. Chance of precipitation is 100%. New snow accumulation of 3 to 5 inches possible.
Friday Night
Snow. Low around 20. North wind around 9 mph becoming southeast after midnight. Chance of precipitation is 100%. New snow accumulation of 2 to 4 inches possible.
Saturday
Snow. Cloudy, with a high near 34. East southeast wind 8 to 14 mph becoming north northwest in the afternoon. Winds could gust as high as 23 mph.
Saturday Night
Snow, mainly before midnight. Cloudy, with a low around 7.
Sunday
A chance of snow. Partly sunny, with a high near 29.
Sunday Night
A chance of snow. Mostly cloudy, with a low around 16.
Monday
A chance of rain and snow. Cloudy, with a high near 47.
Monday Night
A chance of rain and snow. Mostly cloudy, with a low around 35.
Tuesday
A slight chance of rain. Mostly cloudy, with a high near 61.
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ABOUT THIS FORECAST

 
Point Forecast:
Lewistown Municipal MT
 47.04°N 109.45°W (Elev. 4111 ft)
1:52 am MDT Mar 11, 2026
2am MDT Mar 11, 2026-6pm MDT Mar 17, 2026
 
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