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

Hurricane Isaias Approaching the Gulf Coast; Remnants of Rachel to Impact the Southwest U.S.

Hurricane Isaias is expected to make landfall along the U.S. northern Gulf Coast late Friday or early Saturday. A life-threatening storm surge is expected along the coast with damaging wind gusts extending well inland. Areas of heavy rainfall are forecast throughout much of the Southeast U.S. The remnants of Rachel will bring gusty winds and heavy rainfall to the Southwest U.S. this weekend. Read More >

Hazardous Weather Conditions

Current conditions at

Garrison I-90 MP 174.4 (MTGAR)

Lat: 46.52361°NLon: 112.80843°WElev: 4327.0ft.

NA

36°F

2°C

Humidity 73%
Wind Speed WSW 4 MPH
Barometer NA
Dewpoint 28°F (-2°C)
Visibility NA
Wind Chill33°F (1°C)
Last update 09 Oct 08:45 AM MDT
Extended Forecast for

Garrison MT

Winter Storm Watch October 10, 06:00pm until October 11, 06:00pm
Click here for hazard details and duration
Winter Storm Watch

  • Today

    Today: Sunny, with a high near 78. South southwest wind 9 to 18 mph becoming west in the afternoon. Winds could gust as high as 38 mph.

    High: 78 °F

    Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 34. West northwest wind 12 to 17 mph becoming light after midnight. Winds could gust as high as 30 mph.

    Low: 34 °F

    Mostly Cloudy

  • Saturday

    Saturday: Rain. High near 51. Light north northwest wind becoming north northeast 11 to 16 mph in the afternoon. Winds could gust as high as 25 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

    High: 51 °F

    Rain

  • Saturday Night

    Saturday Night: Rain before 7pm, then rain, possibly mixed with snow between 7pm and 9pm, then snow after 9pm. Patchy blowing snow between midnight and 3am. Low around 21. Northeast wind 14 to 20 mph, with gusts as high as 38 mph. Chance of precipitation is 100%. New snow accumulation of 1 to 2 inches possible.

    Low: 21 °F

    Rain/Snow
    then Snow and
    Patchy
    Blowing Snow

  • Sunday

    Sunday: Snow. High near 36. Northeast wind 8 to 11 mph, with gusts as high as 22 mph. Chance of precipitation is 100%. New snow accumulation of around an inch possible.

    High: 36 °F

    Snow then
    Snow Likely

  • Sunday Night

    Sunday Night: Snow. Low around 18. Chance of precipitation is 80%. New snow accumulation of less than one inch possible.

    Low: 18 °F

    Snow

  • Columbus Day

    Columbus Day: A chance of snow, mixing with rain after 9am, then gradually ending. Snow level rising to 7100 feet in the afternoon. Partly sunny, with a high near 44. Chance of precipitation is 40%. Little or no snow accumulation expected.

    High: 44 °F

    Chance
    Rain/Snow
    then Partly
    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 22.

    Low: 22 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 51.

    High: 51 °F

    Mostly Sunny

Detailed Forecast

Today
Sunny, with a high near 78. South southwest wind 9 to 18 mph becoming west in the afternoon. Winds could gust as high as 38 mph.
Tonight
Mostly cloudy, with a low around 34. West northwest wind 12 to 17 mph becoming light after midnight. Winds could gust as high as 30 mph.
Saturday
Rain. High near 51. Light north northwest wind becoming north northeast 11 to 16 mph in the afternoon. Winds could gust as high as 25 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Saturday Night
Rain before 7pm, then rain, possibly mixed with snow between 7pm and 9pm, then snow after 9pm. Patchy blowing snow between midnight and 3am. Low around 21. Northeast wind 14 to 20 mph, with gusts as high as 38 mph. Chance of precipitation is 100%. New snow accumulation of 1 to 2 inches possible.
Sunday
Snow. High near 36. Northeast wind 8 to 11 mph, with gusts as high as 22 mph. Chance of precipitation is 100%. New snow accumulation of around an inch possible.
Sunday Night
Snow. Low around 18. Chance of precipitation is 80%. New snow accumulation of less than one inch possible.
Columbus Day
A chance of snow, mixing with rain after 9am, then gradually ending. Snow level rising to 7100 feet in the afternoon. Partly sunny, with a high near 44. Chance of precipitation is 40%. Little or no snow accumulation expected.
Monday Night
Partly cloudy, with a low around 22.
Tuesday
Mostly sunny, with a high near 51.
Tuesday Night
Partly cloudy, with a low around 24.
Wednesday
A slight chance of rain and snow. Mostly sunny, with a high near 53.
Wednesday Night
A chance of rain and snow. Mostly cloudy, with a low around 25.
Thursday
A chance of rain and snow. Partly sunny, with a high near 52.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Garrison MT
 46.52°N 112.78°W (Elev. 4396 ft)
Last Update:
3:27 am MDT Oct 9, 2026
Forecast Valid:
9am MDT Oct 9, 2026-6pm MDT Oct 15, 2026
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation