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.

NA

N/A

Humidity 48%
Wind Speed W 8 MPH
Barometer NA
Dewpoint N/A
Visibility 10.00 mi
Last update 15 Apr 02:05 AM MDT
Extended Forecast for

Lewistown Municipal MT

  • Overnight

    Overnight: Mostly clear, with a low around 28. South southeast wind around 6 mph.

    Low: 28 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 65. South southeast wind around 6 mph becoming light and variable.

    High: 65 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 40. West wind 6 to 10 mph becoming south southeast in the evening.

    Low: 40 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 72. Southwest wind around 7 mph becoming northwest in the afternoon.

    High: 72 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 44. North wind around 7 mph becoming south after midnight.

    Low: 44 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 78. Southwest wind 6 to 8 mph.

    High: 78 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 50. South southeast wind 8 to 10 mph.

    Low: 50 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 70. South wind 9 to 16 mph becoming west in the afternoon. Winds could gust as high as 25 mph.

    High: 70 °F

    Partly Sunny
    then Showers
    Likely

  • Wednesday Night

    Wednesday Night: Rain showers before midnight, then rain between midnight and 3am, then rain and snow after 3am. Some thunder is also possible. Cloudy, with a low around 28. Blustery.

    Low: 28 °F

    Showers then
    Rain/Snow and
    Blustery

Detailed Forecast

Overnight
Mostly clear, with a low around 28. South southeast wind around 6 mph.
Sunday
Sunny, with a high near 65. South southeast wind around 6 mph becoming light and variable.
Sunday Night
Partly cloudy, with a low around 40. West wind 6 to 10 mph becoming south southeast in the evening.
Monday
Mostly sunny, with a high near 72. Southwest wind around 7 mph becoming northwest in the afternoon.
Monday Night
Partly cloudy, with a low around 44. North wind around 7 mph becoming south after midnight.
Tuesday
Mostly sunny, with a high near 78. Southwest wind 6 to 8 mph.
Tuesday Night
Mostly cloudy, with a low around 50. South southeast wind 8 to 10 mph.
Wednesday
Showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 70. South wind 9 to 16 mph becoming west in the afternoon. Winds could gust as high as 25 mph.
Wednesday Night
Rain showers before midnight, then rain between midnight and 3am, then rain and snow after 3am. Some thunder is also possible. Cloudy, with a low around 28. Blustery.
Thursday
Snow likely, mainly before noon. Mostly cloudy, with a high near 39. Windy.
Thursday Night
A chance of snow. Mostly cloudy, with a low around 23. Blustery.
Friday
A chance of snow. Partly sunny, with a high near 39.
Friday Night
A slight chance of snow. Mostly cloudy, with a low around 20.
Saturday
A slight chance of snow. Partly sunny, with a high near 40.
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ABOUT THIS FORECAST

 
Point Forecast:
Lewistown Municipal MT
 47.04°N 109.45°W (Elev. 4111 ft)
Last Update:
12:31 am MDT Apr 19, 2026
Forecast Valid:
1am MDT Apr 19, 2026-6pm MDT Apr 25, 2026
 
Forecast Discussion
 
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Additional Resources

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