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.

Mostly Cloudy

61°F

16°C

Humidity 38%
Wind Speed NW 10 MPH
Barometer 29.77 in (1008.13 mb)
Dewpoint 35°F (2°C)
Visibility 10.00 mi
Last update 27 Apr 02:05 PM MDT
Extended Forecast for

Lewistown MT

  • This Afternoon

    This Afternoon: Showers likely, with thunderstorms also possible after 3pm. Cloudy, with a high near 63. North northwest wind 13 to 15 mph, with gusts as high as 21 mph. Chance of precipitation is 70%.

    High: 63 °F

    Showers
    Likely

  • Tonight

    Tonight: Rain showers before 4am, then rain and snow showers between 4am and 5am, then snow after 5am. Some thunder is also possible. Low around 30. North northwest wind 14 to 16 mph, with gusts as high as 23 mph. Chance of precipitation is 100%. New snow accumulation of less than a half inch possible.

    Low: 30 °F

    Showers then
    Rain/Snow

  • Monday

    Monday: Rain showers and snow likely before 3pm, then a slight chance of rain showers between 3pm and 4pm. Mostly cloudy, with a high near 48. Northwest wind 8 to 16 mph, with gusts as high as 23 mph. Chance of precipitation is 70%. New snow accumulation of less than one inch possible.

    High: 48 °F

    Snow Likely
    then Slight
    Chance
    Rain/Snow

  • Monday Night

    Monday Night: Partly cloudy, with a low around 32. West wind 6 to 10 mph becoming south in the evening.

    Low: 32 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 63. West wind 9 to 14 mph, with gusts as high as 24 mph.

    High: 63 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: A 40 percent chance of showers. Mostly cloudy, with a low around 39. West wind 9 to 14 mph, with gusts as high as 25 mph.

    Low: 39 °F

    Chance
    Showers

  • Wednesday

    Wednesday: A 30 percent chance of showers. Partly sunny, with a high near 59. West northwest wind 8 to 11 mph, with gusts as high as 21 mph.

    High: 59 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: A chance of showers before midnight. Partly cloudy, with a low around 38. Northwest wind 6 to 9 mph becoming south southwest after midnight.

    Low: 38 °F

    Chance
    Showers then
    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 68.

    High: 68 °F

    Sunny

Detailed Forecast

This Afternoon
Showers likely, with thunderstorms also possible after 3pm. Cloudy, with a high near 63. North northwest wind 13 to 15 mph, with gusts as high as 21 mph. Chance of precipitation is 70%.
Tonight
Rain showers before 4am, then rain and snow showers between 4am and 5am, then snow after 5am. Some thunder is also possible. Low around 30. North northwest wind 14 to 16 mph, with gusts as high as 23 mph. Chance of precipitation is 100%. New snow accumulation of less than a half inch possible.
Monday
Rain showers and snow likely before 3pm, then a slight chance of rain showers between 3pm and 4pm. Mostly cloudy, with a high near 48. Northwest wind 8 to 16 mph, with gusts as high as 23 mph. Chance of precipitation is 70%. New snow accumulation of less than one inch possible.
Monday Night
Partly cloudy, with a low around 32. West wind 6 to 10 mph becoming south in the evening.
Tuesday
Partly sunny, with a high near 63. West wind 9 to 14 mph, with gusts as high as 24 mph.
Tuesday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 39. West wind 9 to 14 mph, with gusts as high as 25 mph.
Wednesday
A 30 percent chance of showers. Partly sunny, with a high near 59. West northwest wind 8 to 11 mph, with gusts as high as 21 mph.
Wednesday Night
A chance of showers before midnight. Partly cloudy, with a low around 38. Northwest wind 6 to 9 mph becoming south southwest after midnight.
Thursday
Sunny, with a high near 68.
Thursday Night
Mostly clear, with a low around 43.
Friday
Sunny, with a high near 76.
Friday Night
Mostly clear, with a low around 47.
Saturday
A chance of showers. Mostly sunny, with a high near 70.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Lewistown MT
 47.07°N 109.43°W (Elev. 3898 ft)
Last Update:
10:14 am MDT Apr 27, 2025
Forecast Valid:
2pm MDT Apr 27, 2025-6pm MDT May 3, 2025
 
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