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

45°F

7°C

Humidity 48%
Wind Speed W 8 MPH
Barometer 29.68 in (1005.08 mb)
Dewpoint 26°F (-3°C)
Visibility 10.00 mi
Wind Chill41°F (5°C)
Last update 15 Apr 02:05 AM MDT
Extended Forecast for

Lewistown Municipal MT

  • Tonight

    Tonight: Mostly cloudy, with a low around 23. West southwest wind around 7 mph.

    Low: 23 °F

    Mostly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 55. West northwest wind 8 to 13 mph, with gusts as high as 23 mph.

    High: 55 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 29. Northwest wind 6 to 10 mph becoming south in the evening.

    Low: 29 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 65. South southwest wind 5 to 7 mph.

    High: 65 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 40. West wind 7 to 10 mph becoming south in the evening.

    Low: 40 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 70. Southwest wind 7 to 9 mph becoming northwest in the afternoon.

    High: 70 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 44. North wind around 8 mph becoming south after midnight.

    Low: 44 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 77. Southwest wind 8 to 11 mph, with gusts as high as 20 mph.

    High: 77 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 47.

    Low: 47 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 23. West southwest wind around 7 mph.
Saturday
Sunny, with a high near 55. West northwest wind 8 to 13 mph, with gusts as high as 23 mph.
Saturday Night
Mostly clear, with a low around 29. Northwest wind 6 to 10 mph becoming south in the evening.
Sunday
Sunny, with a high near 65. South southwest wind 5 to 7 mph.
Sunday Night
Partly cloudy, with a low around 40. West wind 7 to 10 mph becoming south in the evening.
Monday
Mostly sunny, with a high near 70. Southwest wind 7 to 9 mph becoming northwest in the afternoon.
Monday Night
Mostly clear, with a low around 44. North wind around 8 mph becoming south after midnight.
Tuesday
Mostly sunny, with a high near 77. Southwest wind 8 to 11 mph, with gusts as high as 20 mph.
Tuesday Night
Partly cloudy, with a low around 47.
Wednesday
A chance of rain after noon. Partly sunny, with a high near 71.
Wednesday Night
Rain likely and possibly a thunderstorm. Mostly cloudy, with a low around 32.
Thursday
Rain and snow likely. Mostly cloudy, with a high near 45. Breezy.
Thursday Night
A chance of rain and snow. Mostly cloudy, with a low around 25.
Friday
A chance of snow. Partly sunny, with a high near 43.
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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:
9:32 pm MDT Apr 17, 2026
Forecast Valid:
10pm MDT Apr 17, 2026-6pm MDT Apr 24, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation