Excessive Rainfall Possible This Weekend; October Heat Wave in California

A slow moving front will be the focus area for heavy to excessive rainfall and a threat for flash/urban flooding across the northern Gulf Coast and Southeast U.S. through this weekend. Abnormally hot, potentially record-breaking, temperatures will impact southern California and stretch north toward the Bay Area and Central Valley into next week. Read More >

Current conditions at

Lewistown Divide MT-200 MP 90.3 (MTLEW)

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

NA

65°F

18°C

Humidity 40%
Wind Speed WNW 2 MPH
Barometer NA
Dewpoint 40°F (4°C)
Visibility NA
Last update 04 Oct 10:45 AM MDT
Extended Forecast for

Lewistown Municipal MT

  • Today

    Today: Sunny, with a high near 79. Light and variable wind.

    High: 79 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 53. Light and variable wind becoming south 6 to 11 mph in the evening.

    Low: 53 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 83. Southwest wind 9 to 14 mph becoming west northwest 15 to 20 mph in the afternoon. Winds could gust as high as 28 mph.

    High: 83 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 50. West northwest wind 6 to 10 mph becoming southwest after midnight. Winds could gust as high as 20 mph.

    Low: 50 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 76. Light and variable wind becoming northwest around 6 mph in the afternoon.

    High: 76 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 46. Light and variable wind becoming south southwest around 5 mph after midnight.

    Low: 46 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 75. Light and variable wind becoming northwest 5 to 8 mph in the afternoon.

    High: 75 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 44. Light and variable wind.

    Low: 44 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 71.

    High: 71 °F

    Sunny

Detailed Forecast

Today
Sunny, with a high near 79. Light and variable wind.
Tonight
Mostly clear, with a low around 53. Light and variable wind becoming south 6 to 11 mph in the evening.
Monday
Sunny, with a high near 83. Southwest wind 9 to 14 mph becoming west northwest 15 to 20 mph in the afternoon. Winds could gust as high as 28 mph.
Monday Night
Mostly clear, with a low around 50. West northwest wind 6 to 10 mph becoming southwest after midnight. Winds could gust as high as 20 mph.
Tuesday
Sunny, with a high near 76. Light and variable wind becoming northwest around 6 mph in the afternoon.
Tuesday Night
Partly cloudy, with a low around 46. Light and variable wind becoming south southwest around 5 mph after midnight.
Wednesday
Sunny, with a high near 75. Light and variable wind becoming northwest 5 to 8 mph in the afternoon.
Wednesday Night
Mostly clear, with a low around 44. Light and variable wind.
Thursday
Sunny, with a high near 71.
Thursday Night
Partly cloudy, with a low around 45.
Friday
Mostly sunny, with a high near 76.
Friday Night
Mostly cloudy, with a low around 45.
Saturday
A chance of rain. Partly sunny, with a high near 61.
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ABOUT THIS FORECAST

 
Point Forecast:
Lewistown Municipal MT
 47.04°N 109.45°W (Elev. 4111 ft)
10:21 am MDT Oct 4, 2026
11am MDT Oct 4, 2026-6pm MDT Oct 10, 2026
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database