Prolonged Atmospheric River in the Pacific Northwest; Snow and High Winds from the Upper Midwest into the Northeast

A prolonged atmospheric river will continue to impact the Pacific Northwest into the Northern Rockies with heavy rainfall, areas of urban and river flooding, landslides, heavy mountain snow, and gusty winds into Thursday. A strong clipper system will bring the threat of heavy snow and high winds across the Upper Midwest/Great Lakes as well as portions of the interior Northeast and Appalachians. Read More >

Current conditions at

BLACK ROCK (OKFO3)

Lat: 43.52831°NLon: 121.81601°WElev: 4891.0ft.

NA

45°F

7°C

Humidity 99%
Wind Speed NNE 1 MPH
Barometer NA
Dewpoint 45°F (7°C)
Visibility NA
Last update 10 Dec 12:15 AM PST
Extended Forecast for

Cascade Summit OR

  • Overnight

    Overnight: A chance of rain before 2am, then a slight chance of rain after 4am.  Mostly cloudy, with a low around 40. West wind 11 to 15 mph, with gusts as high as 23 mph.  Chance of precipitation is 40%.

    Low: 40 °F

    Chance Rain

  • Wednesday

    Wednesday: Mostly sunny, with a high near 50. West wind 8 to 15 mph, with gusts as high as 23 mph.

    High: 50 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 35. West wind around 6 mph.

    Low: 35 °F

    Partly Cloudy

  • Thursday

    Thursday: Patchy fog after 5pm.  Otherwise, mostly sunny, with a high near 49. Light west wind.

    High: 49 °F

    Mostly Sunny
    then Patchy
    Fog

  • Thursday Night

    Thursday Night: Patchy fog before 10pm.  Otherwise, mostly clear, with a low around 34. Calm wind.

    Low: 34 °F

    Patchy Fog
    then Mostly
    Clear

  • Friday

    Friday: Sunny, with a high near 52.

    High: 52 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 33.

    Low: 33 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 53.

    High: 53 °F

    Sunny

  • Saturday Night

    Saturday Night: A slight chance of rain after 10pm.  Snow level 7000 feet lowering to 6400 feet after midnight . Partly cloudy, with a low around 34.

    Low: 34 °F

    Slight Chance
    Rain

Detailed Forecast

Overnight
A chance of rain before 2am, then a slight chance of rain after 4am. Mostly cloudy, with a low around 40. West wind 11 to 15 mph, with gusts as high as 23 mph. Chance of precipitation is 40%.
Wednesday
Mostly sunny, with a high near 50. West wind 8 to 15 mph, with gusts as high as 23 mph.
Wednesday Night
Partly cloudy, with a low around 35. West wind around 6 mph.
Thursday
Patchy fog after 5pm. Otherwise, mostly sunny, with a high near 49. Light west wind.
Thursday Night
Patchy fog before 10pm. Otherwise, mostly clear, with a low around 34. Calm wind.
Friday
Sunny, with a high near 52.
Friday Night
Partly cloudy, with a low around 33.
Saturday
Sunny, with a high near 53.
Saturday Night
A slight chance of rain after 10pm. Snow level 7000 feet lowering to 6400 feet after midnight . Partly cloudy, with a low around 34.
Sunday
A chance of rain. Snow level 6100 feet rising to 6800 feet in the afternoon. Partly sunny, with a high near 45.
Sunday Night
A chance of rain. Snow level 6800 feet. Mostly cloudy, with a low around 34.
Monday
Rain likely. Snow level 6900 feet rising to 7700 feet in the afternoon. Mostly cloudy, with a high near 45.
Monday Night
Rain. Snow level 7400 feet lowering to 6700 feet after midnight . Mostly cloudy, with a low around 34.
Tuesday
Rain likely. Snow level 6000 feet. Mostly cloudy, with a high near 41.
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ABOUT THIS FORECAST

 
Point Forecast:
Cascade Summit OR
 43.59°N 122.02°W (Elev. 4790 ft)
10:36 pm PST Dec 9, 2025
12am PST Dec 10, 2025-6pm PST Dec 16, 2025
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

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