Tracking Atmospheric River in the Northwest U.S. and Clipper with Winter Weather in the Northeast U.S.

A prolonged atmospheric river will continue to bring gusty winds, heavy rainfall which may lead to urban and river flooding with possible landslides, and heavy inter-mountain snow over the Pacific Northwest into the northern Rockies through Thursday. A clipper will cross the Great Lakes and Northeast U.S. into Thursday with areas of moderate to heavy snow and mixed wintry precipitation. Read More >

Current conditions at

BLACK DIAMOND (PIBC1)

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

NA

50°F

10°C

Humidity 74%
Wind Speed N 12 MPH
Barometer NA
Dewpoint 42°F (6°C)
Visibility NA
Wind Chill45°F (7°C)
Last update 10 Dec 08:28 AM PST
Extended Forecast for

3 Miles SW Discovery Bay CA

  • Today

    Today: Patchy dense fog before 1pm.  Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 47. Light and variable wind.

    High: 47 °F

    Patchy Dense
    Fog

  • Tonight

    Tonight: Patchy dense fog.  Otherwise, increasing clouds, with a low around 42. Calm wind.

    Low: 42 °F

    Patchy Dense
    Fog

  • Thursday

    Thursday: Areas of dense fog before 11am.  Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 50. Light north northeast wind.

    High: 50 °F

    Areas Dense
    Fog then
    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 43. Calm wind.

    Low: 43 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 53. Light northeast wind.

    High: 53 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Patchy fog after 2am.  Otherwise, partly cloudy, with a low around 42.

    Low: 42 °F

    Partly Cloudy
    then Patchy
    Fog

  • Saturday

    Saturday: Patchy fog before 9am.  Otherwise, mostly sunny, with a high near 57.

    High: 57 °F

    Patchy Fog
    then Mostly
    Sunny

  • Saturday Night

    Saturday Night: Patchy fog after 5am.  Otherwise, partly cloudy, with a low around 42.

    Low: 42 °F

    Mostly Clear
    then Patchy
    Fog

  • Sunday

    Sunday: Patchy fog before 9am.  Otherwise, partly sunny, with a high near 57.

    High: 57 °F

    Patchy Fog
    then Partly
    Sunny

Detailed Forecast

Today
Patchy dense fog before 1pm. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 47. Light and variable wind.
Tonight
Patchy dense fog. Otherwise, increasing clouds, with a low around 42. Calm wind.
Thursday
Areas of dense fog before 11am. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 50. Light north northeast wind.
Thursday Night
Partly cloudy, with a low around 43. Calm wind.
Friday
Mostly sunny, with a high near 53. Light northeast wind.
Friday Night
Patchy fog after 2am. Otherwise, partly cloudy, with a low around 42.
Saturday
Patchy fog before 9am. Otherwise, mostly sunny, with a high near 57.
Saturday Night
Patchy fog after 5am. Otherwise, partly cloudy, with a low around 42.
Sunday
Patchy fog before 9am. Otherwise, partly sunny, with a high near 57.
Sunday Night
Mostly cloudy, with a low around 44.
Monday
A slight chance of rain. Patchy fog. Otherwise, mostly cloudy, with a high near 58.
Monday Night
A chance of rain. Mostly cloudy, with a low around 50.
Tuesday
A chance of rain. Mostly cloudy, with a high near 62.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SW Discovery Bay CA
 37.87°N 121.63°W (Elev. 16 ft)
12:26 am PST Dec 10, 2025
9am 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