Winter Weather in the Eastern U.S.; Heavy Rains Begin Across the Southern Plains into the Ohio Valley

A wintry mix may impact travel across portions of the Mid-Atlantic through the morning and the Northeast U.S. through Tuesday. Heavy rain and thunderstorms may cause a flooding threat across the Southern Plains into the Ohio Valley beginning Tuesday. Fire weather concerns will continue across portions of the central and southern High Plains through Wednesday. Read More >

Current conditions at

Lewistown, Lewistown Municipal Airport (KLWT)

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

Clear

30°F

-1°C

Humidity 58%
Wind Speed N 0 MPH
Barometer 29.95 in (1014.22 mb)
Dewpoint 17°F (-8°C)
Visibility 10.00 mi
Last update 02 Mar 11:55 PM MST
Extended Forecast for

Lewistown MT

  • Overnight

    Overnight: Mostly clear, with a low around 26. Southwest wind around 6 mph.

    Low: 26 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 61. Southwest wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 61 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 35. South wind 6 to 9 mph.

    Low: 35 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 58. South southwest wind around 6 mph.

    High: 58 °F

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: A 50 percent chance of rain.  Cloudy, with a low around 31. Light and variable wind becoming west northwest around 6 mph after midnight.

    Low: 31 °F

    Chance Rain

  • Thursday

    Thursday: A chance of rain and snow.  Mostly cloudy, with a high near 44. West northwest wind 7 to 15 mph, with gusts as high as 25 mph.  Chance of precipitation is 50%. Little or no snow accumulation expected.

    High: 44 °F

    Chance
    Rain/Snow

  • Thursday Night

    Thursday Night: A chance of rain and snow before 8pm, then a chance of snow.  Mostly cloudy, with a low around 25. West wind 6 to 11 mph, with gusts as high as 21 mph.  Chance of precipitation is 30%. Little or no snow accumulation expected.

    Low: 25 °F

    Chance
    Rain/Snow
    then Slight
    Chance Snow

  • Friday

    Friday: A slight chance of snow.  Partly sunny, with a high near 44. West northwest wind 6 to 11 mph, with gusts as high as 21 mph.

    High: 44 °F

    Slight Chance
    Snow

  • Friday Night

    Friday Night: Mostly clear, with a low around 26.

    Low: 26 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly clear, with a low around 26. Southwest wind around 6 mph.
Tuesday
Mostly sunny, with a high near 61. Southwest wind 5 to 10 mph, with gusts as high as 20 mph.
Tuesday Night
Partly cloudy, with a low around 35. South wind 6 to 9 mph.
Wednesday
Mostly cloudy, with a high near 58. South southwest wind around 6 mph.
Wednesday Night
A 50 percent chance of rain. Cloudy, with a low around 31. Light and variable wind becoming west northwest around 6 mph after midnight.
Thursday
A chance of rain and snow. Mostly cloudy, with a high near 44. West northwest wind 7 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 50%. Little or no snow accumulation expected.
Thursday Night
A chance of rain and snow before 8pm, then a chance of snow. Mostly cloudy, with a low around 25. West wind 6 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 30%. Little or no snow accumulation expected.
Friday
A slight chance of snow. Partly sunny, with a high near 44. West northwest wind 6 to 11 mph, with gusts as high as 21 mph.
Friday Night
Mostly clear, with a low around 26.
Saturday
Mostly sunny, with a high near 54. Breezy.
Saturday Night
Mostly cloudy, with a low around 36.
Sunday
A slight chance of rain. Partly sunny, with a high near 53.
Sunday Night
A chance of rain and snow. Mostly cloudy, with a low around 32.
Monday
A chance of rain and snow. Mostly cloudy, with a high near 53. Breezy.
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ABOUT THIS FORECAST

 
Point Forecast:
Lewistown MT
 47.07°N 109.43°W (Elev. 3898 ft)
11:31 pm MST Mar 2, 2026
12am MST Mar 3, 2026-6pm MDT Mar 9, 2026
 
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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