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

Areas of Excessive Rainfall and Severe Thunderstorms; Typhoon Watch for Guam/CNMI

Heavy to excessive rainfall will continue today from the Texas Big Bend region into southern Oklahoma. Locally considerable flash and urban flooding is possible, and river flooding will continue in central Oklahoma. Scattered severe thunderstorms are possible in parts of the Mid-Atlantic Friday. A Typhoon Watch has been issued for Guam and CNMI. Read More >

Current conditions at

Lewistown Divide MT-200 MP 90.3 (MTLEW)

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

NA

40°F

4°C

Humidity 56%
Wind Speed W 10 MPH
Barometer NA
Dewpoint 25°F (-4°C)
Visibility NA
Wind Chill34°F (1°C)
Last update 15 Oct 04:15 PM MDT
Extended Forecast for

Lewistown MT

  • Tonight

    Tonight: Mostly clear, with a low around 26. Calm wind becoming southeast 5 to 9 mph in the evening.

    Low: 26 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 69. Southeast wind 5 to 9 mph becoming west southwest in the afternoon. Winds could gust as high as 18 mph.

    High: 69 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 45. South wind 9 to 13 mph, with gusts as high as 18 mph.

    Low: 45 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 74. South wind 10 to 14 mph, with gusts as high as 24 mph.

    High: 74 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 39. West southwest wind 5 to 10 mph becoming light west after midnight. Winds could gust as high as 20 mph.

    Low: 39 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 59. Calm wind becoming south southeast around 5 mph in the afternoon.

    High: 59 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 37. South southeast wind 3 to 7 mph.

    Low: 37 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 68. Calm wind becoming south southwest around 5 mph in the afternoon.

    High: 68 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 43.

    Low: 43 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 26. Calm wind becoming southeast 5 to 9 mph in the evening.
Friday
Sunny, with a high near 69. Southeast wind 5 to 9 mph becoming west southwest in the afternoon. Winds could gust as high as 18 mph.
Friday Night
Partly cloudy, with a low around 45. South wind 9 to 13 mph, with gusts as high as 18 mph.
Saturday
Sunny, with a high near 74. South wind 10 to 14 mph, with gusts as high as 24 mph.
Saturday Night
Partly cloudy, with a low around 39. West southwest wind 5 to 10 mph becoming light west after midnight. Winds could gust as high as 20 mph.
Sunday
Sunny, with a high near 59. Calm wind becoming south southeast around 5 mph in the afternoon.
Sunday Night
Mostly clear, with a low around 37. South southeast wind 3 to 7 mph.
Monday
Sunny, with a high near 68. Calm wind becoming south southwest around 5 mph in the afternoon.
Monday Night
Partly cloudy, with a low around 43.
Tuesday
Mostly sunny, with a high near 63.
Tuesday Night
Partly cloudy, with a low around 38.
Wednesday
Mostly sunny, with a high near 58.
Wednesday Night
Partly cloudy, with a low around 41.
Thursday
Mostly sunny, with a high near 61.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Lewistown MT
 47.05°N 109.42°W (Elev. 4075 ft)
Last Update:
4:21 pm MDT Oct 15, 2026
Forecast Valid:
4pm MDT Oct 15, 2026-6pm MDT Oct 22, 2026
 
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