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.

Clear

N/A

Humidity 80%
Wind Speed SE 4 MPH
Barometer NA
Dewpoint N/A
Visibility 10.00 mi
Last update 05 Apr 02:15 AM MDT
Extended Forecast for

Lewistown Municipal MT

  • This Afternoon

    This Afternoon: Sunny, with a high near 65. East southeast wind around 9 mph.

    High: 65 °F

    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 40. East southeast wind 7 to 9 mph.

    Low: 40 °F

    Partly Cloudy

  • Saturday

    Saturday: A 30 percent chance of showers, mainly after 3pm. Mostly sunny, with a high near 73. South southeast wind 7 to 14 mph becoming west southwest in the afternoon. Winds could gust as high as 23 mph.

    High: 73 °F

    Mostly Sunny
    then Chance
    Showers

  • Saturday Night

    Saturday Night: Showers likely before midnight, then a slight chance of rain after midnight. Mostly cloudy, with a low around 40. West southwest wind around 10 mph, with gusts as high as 18 mph. Chance of precipitation is 60%.

    Low: 40 °F

    Showers
    Likely then
    Slight Chance
    Rain

  • Sunday

    Sunday: A 50 percent chance of rain after noon. Partly sunny, with a high near 60. West southwest wind around 10 mph becoming northwest in the afternoon. Winds could gust as high as 18 mph.

    High: 60 °F

    Mostly Sunny
    then Chance
    Rain

  • Sunday Night

    Sunday Night: Rain. Low around 37. East northeast wind 6 to 8 mph becoming south after midnight. Chance of precipitation is 90%.

    Low: 37 °F

    Rain then
    Rain Likely

  • Monday

    Monday: A chance of rain, then showers and possibly a thunderstorm after noon. High near 53. West southwest wind 7 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 90%.

    High: 53 °F

    Chance Rain
    then Showers

  • Monday Night

    Monday Night: A chance of rain, mainly before midnight. Mostly cloudy, with a low around 33. West southwest wind around 9 mph, with gusts as high as 18 mph.

    Low: 33 °F

    Chance Rain

  • Tuesday

    Tuesday: A slight chance of rain after noon. Mostly sunny, with a high near 57.

    High: 57 °F

    Mostly Sunny
    then Slight
    Chance Rain

Detailed Forecast

This Afternoon
Sunny, with a high near 65. East southeast wind around 9 mph.
Tonight
Partly cloudy, with a low around 40. East southeast wind 7 to 9 mph.
Saturday
A 30 percent chance of showers, mainly after 3pm. Mostly sunny, with a high near 73. South southeast wind 7 to 14 mph becoming west southwest in the afternoon. Winds could gust as high as 23 mph.
Saturday Night
Showers likely before midnight, then a slight chance of rain after midnight. Mostly cloudy, with a low around 40. West southwest wind around 10 mph, with gusts as high as 18 mph. Chance of precipitation is 60%.
Sunday
A 50 percent chance of rain after noon. Partly sunny, with a high near 60. West southwest wind around 10 mph becoming northwest in the afternoon. Winds could gust as high as 18 mph.
Sunday Night
Rain. Low around 37. East northeast wind 6 to 8 mph becoming south after midnight. Chance of precipitation is 90%.
Monday
A chance of rain, then showers and possibly a thunderstorm after noon. High near 53. West southwest wind 7 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 90%.
Monday Night
A chance of rain, mainly before midnight. Mostly cloudy, with a low around 33. West southwest wind around 9 mph, with gusts as high as 18 mph.
Tuesday
A slight chance of rain after noon. Mostly sunny, with a high near 57.
Tuesday Night
Partly cloudy, with a low around 35.
Wednesday
A chance of rain. Mostly cloudy, with a high near 56.
Wednesday Night
Rain and snow likely. Mostly cloudy, with a low around 27.
Thursday
Snow likely. Mostly cloudy, with a high near 40.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Lewistown Municipal MT
 47.04°N 109.45°W (Elev. 4111 ft)
Last Update:
12:32 pm MDT Apr 10, 2026
Forecast Valid:
12pm MDT Apr 10, 2026-6pm MDT Apr 16, 2026
 
Forecast Discussion
 
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Additional Resources

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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