National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Severe Thunderstorms and Heavy Rain Across the Central US; Wintry Mix in the Northern Plains and Northeast

Severe thunderstorms and flash flooding are possible across the central U.S. through Saturday. Large hail, damaging winds, and tornadoes are all possible. There is an increased threat for wildfire development in the southern to central High Plains. A wintry mix of snow, sleet and freezing rain are forecast across portions of the northern Plains and central New England into early Friday morning. Read More >

Hazardous Weather Conditions

Current conditions at

Lewistown, Lewistown Municipal Airport (KLWT)

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

Clear

28°F

-2°C

Humidity 86%
Wind Speed W 6 MPH
Barometer 29.97 in (1014.9 mb)
Dewpoint 25°F (-4°C)
Visibility 10.00 mi
Wind Chill21°F (-6°C)
Last update 06 Mar 01:00 AM MST
Extended Forecast for

Lewistown Municipal MT

High Wind Watch March 8, 06:00am until March 9, 12:00am
High Wind Watch March 7, 08:00am until March 7, 11:00pm
Click here for hazard details and duration
High Wind Watch
High Wind Watch

  • Overnight

    Overnight: A 10 percent chance of snow after 5am. Mostly cloudy, with a steady temperature around 29. West northwest wind around 6 mph.

    Low: 29 °F

    Slight Chance
    Snow

  • Friday

    Friday: Mostly cloudy, then gradually becoming sunny, with a high near 43. West wind 6 to 10 mph, with gusts as high as 18 mph.

    High: 43 °F

    Decreasing
    Clouds

  • Friday Night

    Friday Night: Partly cloudy, with a low around 26. West southwest wind around 11 mph, with gusts as high as 20 mph.

    Low: 26 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 55. West wind 13 to 21 mph, with gusts as high as 31 mph.

    High: 55 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 38. West wind 17 to 20 mph, with gusts as high as 32 mph.

    Low: 38 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 59. Windy, with a west southwest wind 17 to 22 mph increasing to 27 to 32 mph in the afternoon. Winds could gust as high as 45 mph.

    High: 59 °F

    Mostly Sunny
    and Windy

  • Sunday Night

    Sunday Night: Rain likely before 8pm, then rain and snow likely between 8pm and 11pm, then snow likely after 11pm. Mostly cloudy, with a low around 26. Breezy, with a west wind 21 to 26 mph decreasing to 11 to 16 mph after midnight. Winds could gust as high as 40 mph. Chance of precipitation is 60%. New snow accumulation of 1 to 2 inches possible.

    Low: 26 °F

    Rain/Snow
    Likely and
    Breezy then
    Snow Likely

  • Monday

    Monday: A chance of snow. Mostly cloudy, with a high near 42. West southwest wind 10 to 17 mph, with gusts as high as 28 mph.

    High: 42 °F

    Chance Snow

  • Monday Night

    Monday Night: A chance of snow, mainly before 11pm. Mostly cloudy, with a low around 19.

    Low: 19 °F

    Chance Snow

Detailed Forecast

Overnight
A 10 percent chance of snow after 5am. Mostly cloudy, with a steady temperature around 29. West northwest wind around 6 mph.
Friday
Mostly cloudy, then gradually becoming sunny, with a high near 43. West wind 6 to 10 mph, with gusts as high as 18 mph.
Friday Night
Partly cloudy, with a low around 26. West southwest wind around 11 mph, with gusts as high as 20 mph.
Saturday
Mostly sunny, with a high near 55. West wind 13 to 21 mph, with gusts as high as 31 mph.
Saturday Night
Partly cloudy, with a low around 38. West wind 17 to 20 mph, with gusts as high as 32 mph.
Sunday
Mostly sunny, with a high near 59. Windy, with a west southwest wind 17 to 22 mph increasing to 27 to 32 mph in the afternoon. Winds could gust as high as 45 mph.
Sunday Night
Rain likely before 8pm, then rain and snow likely between 8pm and 11pm, then snow likely after 11pm. Mostly cloudy, with a low around 26. Breezy, with a west wind 21 to 26 mph decreasing to 11 to 16 mph after midnight. Winds could gust as high as 40 mph. Chance of precipitation is 60%. New snow accumulation of 1 to 2 inches possible.
Monday
A chance of snow. Mostly cloudy, with a high near 42. West southwest wind 10 to 17 mph, with gusts as high as 28 mph.
Monday Night
A chance of snow, mainly before 11pm. Mostly cloudy, with a low around 19.
Tuesday
A chance of snow after 11am. Partly sunny, with a high near 36.
Tuesday Night
A slight chance of snow. Mostly cloudy, with a low around 18.
Wednesday
A slight chance of snow. Partly sunny, with a high near 42.
Wednesday Night
A chance of snow. Mostly cloudy, with a low around 25.
Thursday
A chance of snow. Partly sunny, with a high near 47. Breezy.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Lewistown Municipal MT
 47.04°N 109.45°W (Elev. 4111 ft)
Last Update:
11:32 pm MST Mar 5, 2026
Forecast Valid:
1am MST Mar 6, 2026-6pm MDT Mar 12, 2026
 
Forecast Discussion
 
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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation