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

Lewistown, Lewistown Municipal Airport (KLWT)

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

Overcast

45°F

7°C

Humidity 45%
Wind Speed W 5 MPH
Barometer 29.91 in (1012.87 mb)
Dewpoint 25°F (-4°C)
Visibility 10.00 mi
Wind Chill42°F (6°C)
Last update 29 Mar 02:05 AM MDT
Extended Forecast for

Lewistown Municipal MT

  • Overnight

    Overnight: Partly cloudy, with a low around 34. West southwest wind around 8 mph.

    Low: 34 °F

    Partly Cloudy

  • Sunday

    Sunday: A 30 percent chance of rain, mainly after 4pm. Increasing clouds, with a high near 58. West southwest wind 6 to 9 mph becoming north northwest in the afternoon.

    High: 58 °F

    Mostly Sunny
    then Chance
    Rain

  • Sunday Night

    Sunday Night: Rain likely, mainly before 10pm. Mostly cloudy, with a low around 33. North northwest wind 5 to 8 mph becoming east southeast in the evening. Chance of precipitation is 60%.

    Low: 33 °F

    Rain Likely

  • Monday

    Monday: Rain likely before 9am, then rain and snow likely between 9am and noon, then snow likely after noon. Cloudy, with a high near 43. Breezy, with a west northwest wind 7 to 12 mph increasing to 18 to 23 mph in the afternoon. Winds could gust as high as 32 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.

    High: 43 °F

    Rain/Snow
    Likely then
    Snow Likely
    and Breezy

  • Monday Night

    Monday Night: A 20 percent chance of snow before midnight. Partly cloudy, with a low around 15. Blustery, with a northwest wind 18 to 23 mph decreasing to 5 to 10 mph after midnight. Winds could gust as high as 30 mph.

    Low: 15 °F

    Slight Chance
    Snow and
    Blustery then
    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 42. West wind 5 to 7 mph becoming southeast in the morning.

    High: 42 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 23. Southeast wind 8 to 10 mph.

    Low: 23 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 56. South southeast wind 7 to 9 mph.

    High: 56 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: A chance of rain. Mostly cloudy, with a low around 32.

    Low: 32 °F

    Chance Rain

Detailed Forecast

Overnight
Partly cloudy, with a low around 34. West southwest wind around 8 mph.
Sunday
A 30 percent chance of rain, mainly after 4pm. Increasing clouds, with a high near 58. West southwest wind 6 to 9 mph becoming north northwest in the afternoon.
Sunday Night
Rain likely, mainly before 10pm. Mostly cloudy, with a low around 33. North northwest wind 5 to 8 mph becoming east southeast in the evening. Chance of precipitation is 60%.
Monday
Rain likely before 9am, then rain and snow likely between 9am and noon, then snow likely after noon. Cloudy, with a high near 43. Breezy, with a west northwest wind 7 to 12 mph increasing to 18 to 23 mph in the afternoon. Winds could gust as high as 32 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.
Monday Night
A 20 percent chance of snow before midnight. Partly cloudy, with a low around 15. Blustery, with a northwest wind 18 to 23 mph decreasing to 5 to 10 mph after midnight. Winds could gust as high as 30 mph.
Tuesday
Mostly sunny, with a high near 42. West wind 5 to 7 mph becoming southeast in the morning.
Tuesday Night
Mostly cloudy, with a low around 23. Southeast wind 8 to 10 mph.
Wednesday
Mostly sunny, with a high near 56. South southeast wind 7 to 9 mph.
Wednesday Night
A chance of rain. Mostly cloudy, with a low around 32.
Thursday
A chance of rain before 9am, then a chance of rain and snow between 9am and noon, then rain after noon. Mostly cloudy, with a high near 49.
Thursday Night
Rain and snow likely. Mostly cloudy, with a low around 23.
Friday
Snow likely. Mostly cloudy, with a high near 38. Breezy.
Friday Night
A chance of snow. Mostly cloudy, with a low around 21.
Saturday
Mostly sunny, with a high near 48.
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:
12:31 am MDT Mar 29, 2026
Forecast Valid:
2am MDT Mar 29, 2026-6pm MDT Apr 4, 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