Winter Returns Across the Northern Tier; Record Warmth for the Southwest

A large high pressure system will usher in cold air for this first day of March across the northern Plains, Great Lakes, Northeast and mid-Atlantic. Some wintry precipitation may evolve across the mid-Mississippi Valley, Ohio Valley and mid-Atlantic through Monday. Meanwhile, record warmth will spread across the Southwest, southern Plains through early this week. Read More >

Current conditions at

Lewistown, Lewistown Municipal Airport (KLWT)

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

Clear

54°F

12°C

Humidity 20%
Wind Speed W 9 MPH
Barometer 29.93 in (1013.55 mb)
Dewpoint 14°F (-10°C)
Visibility 10.00 mi
Last update 01 Mar 02:20 PM MST
Extended Forecast for

Lewistown MT

  • This Afternoon

    This Afternoon: Sunny, with a high near 51. West wind around 6 mph becoming south.

    High: 51 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 28. South southeast wind around 7 mph.

    Low: 28 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 53. Southwest wind around 5 mph becoming northwest in the afternoon.

    High: 53 °F

    Sunny

  • Monday Night

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

    Low: 29 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 58. Southwest wind 7 to 9 mph.

    High: 58 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 35. Southwest wind around 8 mph.

    Low: 35 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A 20 percent chance of rain after 11am.  Cloudy, with a high near 55. Southwest wind around 8 mph.

    High: 55 °F

    Slight Chance
    Rain

  • Wednesday Night

    Wednesday Night: Rain likely, mainly before 11pm.  Cloudy, with a low around 31. West wind around 7 mph.

    Low: 31 °F

    Rain Likely

  • Thursday

    Thursday: A slight chance of rain and snow after 11am.  Mostly cloudy, with a high near 46.

    High: 46 °F

    Slight Chance
    Rain/Snow

Detailed Forecast

This Afternoon
Sunny, with a high near 51. West wind around 6 mph becoming south.
Tonight
Mostly clear, with a low around 28. South southeast wind around 7 mph.
Monday
Sunny, with a high near 53. Southwest wind around 5 mph becoming northwest in the afternoon.
Monday Night
Mostly clear, with a low around 29. South southwest wind around 7 mph.
Tuesday
Mostly sunny, with a high near 58. Southwest wind 7 to 9 mph.
Tuesday Night
Mostly cloudy, with a low around 35. Southwest wind around 8 mph.
Wednesday
A 20 percent chance of rain after 11am. Cloudy, with a high near 55. Southwest wind around 8 mph.
Wednesday Night
Rain likely, mainly before 11pm. Cloudy, with a low around 31. West wind around 7 mph.
Thursday
A slight chance of rain and snow after 11am. Mostly cloudy, with a high near 46.
Thursday Night
A slight chance of rain and snow before 8pm, then a slight chance of snow between 8pm and 11pm. Mostly cloudy, with a low around 25.
Friday
Mostly sunny, with a high near 45.
Friday Night
A slight chance of rain and snow. Partly cloudy, with a low around 28.
Saturday
A slight chance of rain. Partly sunny, 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)
11:32 am MST Mar 1, 2026
2pm MST Mar 1, 2026-6pm MST Mar 7, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database