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

Isaias Expected To Be A Strong Hurricane Approaching The Northern Gulf Coast Friday

Isaias is expected to strengthen and be a strong hurricane when it approaches the northern Gulf Coast on Friday. Damaging hurricane-force winds and life-threatening storm surge impacts are expected Friday into Saturday. Isaias will bring heavy rainfall to the northern Gulf Coast and much of the Southeast U.S. Friday into the weekend. Read More >

Current conditions at

Lewistown Divide MT-200 MP 90.3 (MTLEW)

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

NA

50°F

10°C

Humidity 40%
Wind Speed NNW 3 MPH
Barometer NA
Dewpoint 26°F (-3°C)
Visibility NA
Last update 08 Oct 07:45 AM MDT
Extended Forecast for

Lewistown MT

  • Today

    Today: Increasing clouds, with a high near 76. West northwest wind around 6 mph becoming calm in the afternoon.

    High: 76 °F

    Increasing
    Clouds

  • Tonight

    Tonight: Mostly cloudy, with a low around 51. Light and variable wind becoming south southeast 6 to 11 mph in the evening. Winds could gust as high as 18 mph.

    Low: 51 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 82. West southwest wind 10 to 17 mph, with gusts as high as 28 mph.

    High: 82 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 38. West northwest wind 5 to 7 mph.

    Low: 38 °F

    Mostly Cloudy

  • Saturday

    Saturday: Rain likely before 3pm, then rain and snow likely. Mostly cloudy, with a high near 50. Light northwest wind becoming north northwest 6 to 11 mph in the morning. Winds could gust as high as 20 mph. Chance of precipitation is 70%. Little or no snow accumulation expected.

    High: 50 °F

    Chance Rain
    then
    Rain/Snow
    Likely

  • Saturday Night

    Saturday Night: Rain and snow, becoming all snow after 9pm. Low around 25. North northwest wind 8 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 100%. New snow accumulation of around an inch possible.

    Low: 25 °F

    Rain/Snow
    then Snow

  • Sunday

    Sunday: Snow. High near 37. North wind around 7 mph. Chance of precipitation is 100%. New snow accumulation of around an inch possible.

    High: 37 °F

    Snow

  • Sunday Night

    Sunday Night: Snow. Cloudy, with a low around 20. North wind around 6 mph becoming calm after midnight.

    Low: 20 °F

    Snow

  • Columbus Day

    Columbus Day: A chance of snow before noon. Partly sunny, with a high near 40.

    High: 40 °F

    Chance Snow
    then Partly
    Sunny

Detailed Forecast

Today
Increasing clouds, with a high near 76. West northwest wind around 6 mph becoming calm in the afternoon.
Tonight
Mostly cloudy, with a low around 51. Light and variable wind becoming south southeast 6 to 11 mph in the evening. Winds could gust as high as 18 mph.
Friday
Mostly sunny, with a high near 82. West southwest wind 10 to 17 mph, with gusts as high as 28 mph.
Friday Night
Mostly cloudy, with a low around 38. West northwest wind 5 to 7 mph.
Saturday
Rain likely before 3pm, then rain and snow likely. Mostly cloudy, with a high near 50. Light northwest wind becoming north northwest 6 to 11 mph in the morning. Winds could gust as high as 20 mph. Chance of precipitation is 70%. Little or no snow accumulation expected.
Saturday Night
Rain and snow, becoming all snow after 9pm. Low around 25. North northwest wind 8 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 100%. New snow accumulation of around an inch possible.
Sunday
Snow. High near 37. North wind around 7 mph. Chance of precipitation is 100%. New snow accumulation of around an inch possible.
Sunday Night
Snow. Cloudy, with a low around 20. North wind around 6 mph becoming calm after midnight.
Columbus Day
A chance of snow before noon. Partly sunny, with a high near 40.
Monday Night
Partly cloudy, with a low around 25.
Tuesday
Sunny, with a high near 56.
Tuesday Night
Partly cloudy, with a low around 32.
Wednesday
A chance of rain. Mostly sunny, with a high near 58.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Lewistown MT
 47.07°N 109.43°W (Elev. 3898 ft)
Last Update:
4:41 am MDT Oct 8, 2026
Forecast Valid:
8am MDT Oct 8, 2026-6pm MDT Oct 14, 2026
 
Forecast Discussion
 
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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