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 DIAMOND (PIBC1)

Lat: 37.95°NLon: 121.88444°WElev: 1600.0ft.

NA

48°F

9°C

Humidity 74%
Wind Speed N 9 MPH
Barometer NA
Dewpoint 40°F (4°C)
Visibility NA
Wind Chill44°F (7°C)
Last update 10 Dec 12:28 AM PST
Extended Forecast for

3 Miles ENE Bethel Island CA

  • Overnight

    Overnight: Mostly cloudy, with a low around 43. Light south southeast wind.

    Low: 43 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Patchy fog after 4pm.  Otherwise, partly sunny, with a high near 46. East southeast wind 3 to 5 mph.

    High: 46 °F

    Mostly Cloudy
    then Patchy
    Fog

  • Wednesday Night

    Wednesday Night: Areas of dense fog.  Otherwise, mostly cloudy, with a low around 43. Calm wind.

    Low: 43 °F

    Areas Dense
    Fog

  • Thursday

    Thursday: Patchy dense fog before 10am, then patchy dense fog after 5pm.  Otherwise, partly sunny, with a high near 49. Light east northeast wind.

    High: 49 °F

    Patchy Dense
    Fog

  • Thursday Night

    Thursday Night: Patchy fog before 2am.  Otherwise, partly cloudy, with a low around 44. Calm wind.

    Low: 44 °F

    Patchy Fog

  • Friday

    Friday: Partly sunny, with a high near 51.

    High: 51 °F

    Partly Sunny

  • Friday Night

    Friday Night: Patchy fog before 1am, then patchy fog after 2am.  Otherwise, partly cloudy, with a low around 44.

    Low: 44 °F

    Patchy Fog

  • Saturday

    Saturday: Patchy fog before 10am.  Otherwise, partly sunny, with a high near 53.

    High: 53 °F

    Patchy Fog
    then Mostly
    Sunny

  • Saturday Night

    Saturday Night: Patchy fog before midnight, then patchy fog after 2am.  Otherwise, partly cloudy, with a low around 44.

    Low: 44 °F

    Patchy Fog

Detailed Forecast

Overnight
Mostly cloudy, with a low around 43. Light south southeast wind.
Wednesday
Patchy fog after 4pm. Otherwise, partly sunny, with a high near 46. East southeast wind 3 to 5 mph.
Wednesday Night
Areas of dense fog. Otherwise, mostly cloudy, with a low around 43. Calm wind.
Thursday
Patchy dense fog before 10am, then patchy dense fog after 5pm. Otherwise, partly sunny, with a high near 49. Light east northeast wind.
Thursday Night
Patchy fog before 2am. Otherwise, partly cloudy, with a low around 44. Calm wind.
Friday
Partly sunny, with a high near 51.
Friday Night
Patchy fog before 1am, then patchy fog after 2am. Otherwise, partly cloudy, with a low around 44.
Saturday
Patchy fog before 10am. Otherwise, partly sunny, with a high near 53.
Saturday Night
Patchy fog before midnight, then patchy fog after 2am. Otherwise, partly cloudy, with a low around 44.
Sunday
Patchy fog after 4pm. Otherwise, partly sunny, with a high near 53.
Sunday Night
Patchy fog. Otherwise, mostly cloudy, with a low around 45.
Monday
A slight chance of rain. Mostly cloudy, with a high near 54.
Monday Night
A chance of rain. Mostly cloudy, with a low around 51.
Tuesday
A chance of rain. Mostly cloudy, with a high near 58.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles ENE Bethel Island CA
 38.04°N 121.61°W (Elev. 3 ft)
12:26 am PST Dec 10, 2025
12am PST Dec 10, 2025-6pm PST Dec 16, 2025
 
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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