Severe Thunderstorms and Heavy Rainfall from the Lower Mississippi Valley to the Mid-Atlantic; Active Pattern Continues in Hawaii

Scattered severe thunderstorms are expected today from the ArkLaTex and Lower Mississippi Valley through the Ohio Valley and Mid-Atlantic. Thunderstorms may produce heavy to excessive rain that could pose a flooding threat today from east Texas into New York. A powerful kona storm will continue to impact Hawaii through Saturday, bringing heavy rainfall, strong winds, and severe thunderstorms. Read More >

Current conditions at

Lewistown, Lewistown Municipal Airport (KLWT)

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

Mostly Cloudy

27°F

-3°C

Humidity 40%
Wind Speed SSW 6 MPH
Barometer 30.13 in (1020.32 mb)
Dewpoint 6°F (-14°C)
Visibility 10.00 mi
Wind Chill20°F (-7°C)
Last update 11 Mar 08:54 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
  • Today

    Today: Mostly cloudy, with a high near 41. Breezy, with a west wind 11 to 16 mph increasing to 18 to 23 mph in the afternoon. Winds could gust as high as 36 mph.

    High: 41 °F

    Mostly Cloudy
    then Partly
    Sunny and
    Breezy

  • Tonight

    Tonight: 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.  Temperature falling to around 37 by 5pm. 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.  High near 34. East southeast wind 8 to 14 mph becoming north northwest in the afternoon. Winds could gust as high as 23 mph.  Chance of precipitation is 100%. New snow accumulation of 3 to 5 inches possible.

    High: 34 °F

    Snow

  • Saturday Night

    Saturday Night: Snow, mainly before midnight.  Cloudy, with a low around 7. West wind 6 to 15 mph, with gusts as high as 25 mph.

    Low: 7 °F

    Snow

  • Sunday

    Sunday: A chance of snow.  Partly sunny, with a high near 29.

    High: 29 °F

    Chance Snow

Detailed Forecast

Today
Mostly cloudy, with a high near 41. Breezy, with a west wind 11 to 16 mph increasing to 18 to 23 mph in the afternoon. Winds could gust as high as 36 mph.
Tonight
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. Temperature falling to around 37 by 5pm. 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. High near 34. East southeast wind 8 to 14 mph becoming north northwest in the afternoon. Winds could gust as high as 23 mph. Chance of precipitation is 100%. New snow accumulation of 3 to 5 inches possible.
Saturday Night
Snow, mainly before midnight. Cloudy, with a low around 7. West wind 6 to 15 mph, with gusts as high as 25 mph.
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)
4:52 am MDT Mar 11, 2026
9am MDT Mar 11, 2026-6pm MDT Mar 17, 2026
 
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