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

55°F

13°C

Humidity 87%
Wind Speed E 4 MPH
Barometer 30.17 in (1021.67 mb)
Dewpoint 52°F (11°C)
Visibility 10.00 mi
Last update 02 Aug 07:35 AM MDT
Extended Forecast for

2 Miles N Lewistown MT

  • Today

    Today: A slight chance of showers and thunderstorms before 8am, then a chance of showers and thunderstorms after 1pm. Patchy fog before 9am. Otherwise, mostly sunny, with a high near 78. Calm wind becoming west northwest 5 to 8 mph in the morning. Chance of precipitation is 50%.

    High: 78 °F

    Slight Chance
    T-storms and
    Patchy Fog
    then Chance
    T-storms

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms, mainly before 7pm. Partly cloudy, with a low around 53. West northwest wind 5 to 8 mph becoming south after midnight.

    Low: 53 °F

    Chance
    T-storms then
    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 79. South wind 5 to 9 mph becoming west northwest in the afternoon. Winds could gust as high as 18 mph.

    High: 79 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 54. Northwest wind around 6 mph becoming light and variable after midnight.

    Low: 54 °F

    Partly Cloudy

  • Monday

    Monday: A slight chance of showers between noon and 3pm, then a slight chance of showers and thunderstorms after 3pm. Mostly sunny, with a high near 83. Calm wind becoming east southeast 5 to 8 mph in the afternoon. Chance of precipitation is 20%.

    High: 83 °F

    Sunny then
    Slight Chance
    T-storms

  • Monday Night

    Monday Night: Showers likely and possibly a thunderstorm before midnight, then a chance of showers and thunderstorms after midnight. Mostly cloudy, with a low around 52. East southeast wind 5 to 9 mph becoming light and variable after midnight. Chance of precipitation is 60%.

    Low: 52 °F

    Showers
    Likely then
    Chance
    T-storms

  • Tuesday

    Tuesday: A 30 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 77. Light west southwest wind becoming west northwest 5 to 10 mph in the morning. Winds could gust as high as 20 mph.

    High: 77 °F

    Mostly Sunny
    then Chance
    Showers

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 52. West northwest wind 5 to 10 mph becoming light and variable after midnight. Winds could gust as high as 18 mph.

    Low: 52 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 83.

    High: 83 °F

    Sunny

Detailed Forecast

Today
A slight chance of showers and thunderstorms before 8am, then a chance of showers and thunderstorms after 1pm. Patchy fog before 9am. Otherwise, mostly sunny, with a high near 78. Calm wind becoming west northwest 5 to 8 mph in the morning. Chance of precipitation is 50%.
Tonight
A 30 percent chance of showers and thunderstorms, mainly before 7pm. Partly cloudy, with a low around 53. West northwest wind 5 to 8 mph becoming south after midnight.
Sunday
Sunny, with a high near 79. South wind 5 to 9 mph becoming west northwest in the afternoon. Winds could gust as high as 18 mph.
Sunday Night
Partly cloudy, with a low around 54. Northwest wind around 6 mph becoming light and variable after midnight.
Monday
A slight chance of showers between noon and 3pm, then a slight chance of showers and thunderstorms after 3pm. Mostly sunny, with a high near 83. Calm wind becoming east southeast 5 to 8 mph in the afternoon. Chance of precipitation is 20%.
Monday Night
Showers likely and possibly a thunderstorm before midnight, then a chance of showers and thunderstorms after midnight. Mostly cloudy, with a low around 52. East southeast wind 5 to 9 mph becoming light and variable after midnight. Chance of precipitation is 60%.
Tuesday
A 30 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 77. Light west southwest wind becoming west northwest 5 to 10 mph in the morning. Winds could gust as high as 20 mph.
Tuesday Night
Mostly clear, with a low around 52. West northwest wind 5 to 10 mph becoming light and variable after midnight. Winds could gust as high as 18 mph.
Wednesday
Sunny, with a high near 83.
Wednesday Night
Partly cloudy, with a low around 55.
Thursday
A slight chance of showers. Mostly sunny, with a high near 82.
Thursday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 54.
Friday
A chance of showers and thunderstorms. Partly sunny, with a high near 72.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles N Lewistown MT
 47.09°N 109.43°W (Elev. 3901 ft)
Last Update:
5:44 am MDT Aug 2, 2025
Forecast Valid:
7am MDT Aug 2, 2025-6pm MDT Aug 8, 2025
 
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