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 96%
Wind Speed NNW 1 MPH
Barometer NA
Dewpoint 44°F (7°C)
Visibility NA
Last update 10 Dec 03:15 AM PST
Extended Forecast for

4 Miles E Cascade Summit OR

  • Overnight

    Overnight: A 20 percent chance of rain before 5am.  Mostly cloudy, with a low around 41. West southwest wind around 10 mph.

    Low: 41 °F

    Slight Chance
    Rain

  • Wednesday

    Wednesday: Partly sunny, with a high near 51. West wind 10 to 14 mph, with gusts as high as 21 mph.

    High: 51 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 35. West wind around 7 mph.

    Low: 35 °F

    Partly Cloudy

  • Thursday

    Thursday: Patchy fog before 10am.  Otherwise, mostly sunny, with a high near 52. Light west wind.

    High: 52 °F

    Patchy Fog
    then Sunny

  • 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 55.

    High: 55 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 35.

    Low: 35 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 55.

    High: 55 °F

    Sunny

  • Saturday Night

    Saturday Night: A slight chance of rain after 4am.  Snow level 7100 feet lowering to 6300 feet after midnight . Partly cloudy, with a low around 35.

    Low: 35 °F

    Partly Cloudy
    then Slight
    Chance Rain

Detailed Forecast

Overnight
A 20 percent chance of rain before 5am. Mostly cloudy, with a low around 41. West southwest wind around 10 mph.
Wednesday
Partly sunny, with a high near 51. West wind 10 to 14 mph, with gusts as high as 21 mph.
Wednesday Night
Partly cloudy, with a low around 35. West wind around 7 mph.
Thursday
Patchy fog before 10am. Otherwise, mostly sunny, with a high near 52. 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 55.
Friday Night
Partly cloudy, with a low around 35.
Saturday
Sunny, with a high near 55.
Saturday Night
A slight chance of rain after 4am. Snow level 7100 feet lowering to 6300 feet after midnight . Partly cloudy, with a low around 35.
Sunday
A chance of rain, mainly after 10am. Snow level 6100 feet rising to 7000 feet in the afternoon. Partly sunny, with a high near 48.
Sunday Night
A chance of rain. Snow level 7000 feet. Mostly cloudy, with a low around 36.
Monday
Rain. Snow level 7500 feet rising to 8300 feet in the afternoon. Mostly cloudy, with a high near 48.
Monday Night
Rain. Snow level 7700 feet lowering to 6800 feet after midnight . Mostly cloudy, with a low around 37.
Tuesday
Rain likely. Snow level 6000 feet. Mostly cloudy, with a high near 42.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles E Cascade Summit OR
 43.57°N 121.96°W (Elev. 5135 ft)
3:41 am PST Dec 10, 2025
4am 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

National Digital Forecast Database