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

36°F

2°C

Humidity 45%
Wind Speed SSE 4 MPH
Barometer 29.89 in (1012.19 mb)
Dewpoint 17°F (-8°C)
Visibility 10.00 mi
Wind Chill33°F (1°C)
Last update 02 Mar 07:54 PM MST
Extended Forecast for

Lewistown Municipal MT

  • Tonight

    Tonight: Mostly clear, with a low around 29. South southwest wind around 7 mph.

    Low: 29 °F

    Mostly Clear

  • Tuesday

    Tuesday: Increasing clouds, with a high near 61. South southwest wind 6 to 9 mph.

    High: 61 °F

    Increasing
    Clouds

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 35. South southwest wind around 10 mph.

    Low: 35 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 57. Southwest wind 7 to 10 mph.

    High: 57 °F

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: Rain likely before 5am, then a chance of rain and snow.  Cloudy, with a low around 32. West southwest wind 5 to 7 mph becoming south in the evening.  Chance of precipitation is 60%. Little or no snow accumulation expected.

    Low: 32 °F

    Rain Likely
    then
    Rain/Snow
    Likely

  • Thursday

    Thursday: A chance of rain and snow before 8am, then a chance of snow between 8am and 2pm, then a chance of rain after 2pm.  Mostly cloudy, with a high near 45. West northwest wind 9 to 16 mph, with gusts as high as 28 mph.  Chance of precipitation is 40%. Little or no snow accumulation expected.

    High: 45 °F

    Chance
    Rain/Snow

  • Thursday Night

    Thursday Night: A slight chance of rain, mixing with snow after 8pm, then gradually ending.  Mostly cloudy, with a low around 27. West wind 7 to 11 mph, with gusts as high as 21 mph.  Chance of precipitation is 20%.

    Low: 27 °F

    Slight Chance
    Rain/Snow
    then Mostly
    Cloudy

  • Friday

    Friday: A slight chance of snow after 11am.  Partly sunny, with a high near 45. West northwest wind 8 to 16 mph, with gusts as high as 25 mph.

    High: 45 °F

    Slight Chance
    Snow

  • Friday Night

    Friday Night: Mostly clear, with a low around 28.

    Low: 28 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 29. South southwest wind around 7 mph.
Tuesday
Increasing clouds, with a high near 61. South southwest wind 6 to 9 mph.
Tuesday Night
Mostly cloudy, with a low around 35. South southwest wind around 10 mph.
Wednesday
Mostly cloudy, with a high near 57. Southwest wind 7 to 10 mph.
Wednesday Night
Rain likely before 5am, then a chance of rain and snow. Cloudy, with a low around 32. West southwest wind 5 to 7 mph becoming south in the evening. Chance of precipitation is 60%. Little or no snow accumulation expected.
Thursday
A chance of rain and snow before 8am, then a chance of snow between 8am and 2pm, then a chance of rain after 2pm. Mostly cloudy, with a high near 45. West northwest wind 9 to 16 mph, with gusts as high as 28 mph. Chance of precipitation is 40%. Little or no snow accumulation expected.
Thursday Night
A slight chance of rain, mixing with snow after 8pm, then gradually ending. Mostly cloudy, with a low around 27. West wind 7 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 20%.
Friday
A slight chance of snow after 11am. Partly sunny, with a high near 45. West northwest wind 8 to 16 mph, with gusts as high as 25 mph.
Friday Night
Mostly clear, with a low around 28.
Saturday
Mostly sunny, with a high near 53. Breezy.
Saturday Night
A slight chance of rain. Mostly cloudy, with a low around 35. Breezy.
Sunday
A slight chance of rain. Mostly cloudy, with a high near 53. Breezy.
Sunday Night
A chance of rain and snow. Mostly cloudy, with a low around 32. Breezy.
Monday
A chance of rain and snow. Mostly cloudy, with a high near 47. Breezy.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
Lewistown Municipal MT
 47.04°N 109.45°W (Elev. 4111 ft)
3:57 pm MST Mar 2, 2026
8pm MST Mar 2, 2026-6pm MDT Mar 9, 2026
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database