National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Lewistown Divide MT-200 MP 90.3 (MTLEW)

Lat: 47.07579°NLon: 109.26247°WElev: 4723.0ft.

NA

64°F

18°C

Humidity 18%
Wind Speed WNW 10 MPH
Barometer NA
Dewpoint 20°F (-7°C)
Visibility NA
Last update 16 Oct 03:45 PM MDT
Extended Forecast for

Lewistown Municipal MT

  • Tonight

    Tonight: Partly cloudy, with a low around 45. South southwest wind 9 to 14 mph, with gusts as high as 20 mph.

    Low: 45 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 72. West southwest wind 13 to 16 mph, with gusts as high as 25 mph.

    High: 72 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 39. Southwest wind 9 to 14 mph becoming light west southwest after midnight. Winds could gust as high as 18 mph.

    Low: 39 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 60. Calm wind becoming southeast around 5 mph in the afternoon.

    High: 60 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 39. South southeast wind 3 to 8 mph.

    Low: 39 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 69. Light south southeast wind.

    High: 69 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 43. Light south southeast wind increasing to 5 to 9 mph in the evening.

    Low: 43 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 63. Calm wind becoming northwest around 6 mph in the afternoon.

    High: 63 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 38.

    Low: 38 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around 45. South southwest wind 9 to 14 mph, with gusts as high as 20 mph.
Saturday
Sunny, with a high near 72. West southwest wind 13 to 16 mph, with gusts as high as 25 mph.
Saturday Night
Mostly cloudy, with a low around 39. Southwest wind 9 to 14 mph becoming light west southwest after midnight. Winds could gust as high as 18 mph.
Sunday
Mostly sunny, with a high near 60. Calm wind becoming southeast around 5 mph in the afternoon.
Sunday Night
Mostly clear, with a low around 39. South southeast wind 3 to 8 mph.
Monday
Sunny, with a high near 69. Light south southeast wind.
Monday Night
Partly cloudy, with a low around 43. Light south southeast wind increasing to 5 to 9 mph in the evening.
Tuesday
Mostly sunny, with a high near 63. Calm wind becoming northwest around 6 mph in the afternoon.
Tuesday Night
Mostly cloudy, with a low around 38.
Wednesday
Mostly sunny, with a high near 61.
Wednesday Night
Partly cloudy, with a low around 42.
Thursday
Mostly sunny, with a high near 65.
Thursday Night
A chance of rain. Mostly cloudy, with a low around 41.
Friday
A chance of rain. Mostly cloudy, with a high near 50.
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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:
12:36 pm MDT Oct 16, 2026
Forecast Valid:
4pm MDT Oct 16, 2026-6pm MDT Oct 23, 2026
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation