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

53°F

12°C

Humidity 62%
Wind Speed N 4 MPH
Barometer NA
Dewpoint 40°F (4°C)
Visibility NA
Last update 11 Dec 12:28 AM PST
Extended Forecast for

Antioch CA

  • Overnight

    Overnight: Mostly cloudy, with a low around 42. East southeast wind around 6 mph.

    Low: 42 °F

    Mostly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 48. East wind 3 to 5 mph.

    High: 48 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Patchy fog before 7pm.  Otherwise, partly cloudy, with a low around 41. Calm wind becoming east southeast around 5 mph after midnight.

    Low: 41 °F

    Patchy Fog
    then Mostly
    Cloudy

  • Friday

    Friday: Mostly cloudy, then gradually becoming sunny, with a high near 50. East northeast wind around 5 mph.

    High: 50 °F

    Decreasing
    Clouds

  • Friday Night

    Friday Night: Patchy fog after 1am.  Otherwise, partly cloudy, with a low around 41. Light east southeast wind.

    Low: 41 °F

    Partly Cloudy
    then Patchy
    Fog

  • Saturday

    Saturday: Patchy fog before 11am.  Otherwise, mostly sunny, with a high near 56.

    High: 56 °F

    Patchy Fog
    then Mostly
    Sunny

  • Saturday Night

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

    Low: 42 °F

    Mostly Clear
    then Patchy
    Fog

  • Sunday

    Sunday: Areas of fog before 10am.  Otherwise, partly sunny, with a high near 56.

    High: 56 °F

    Areas Fog
    then Partly
    Sunny

  • Sunday Night

    Sunday Night: Patchy fog after 5am.  Otherwise, mostly cloudy, with a low around 43.

    Low: 43 °F

    Partly Cloudy
    then Patchy
    Fog

Detailed Forecast

Overnight
Mostly cloudy, with a low around 42. East southeast wind around 6 mph.
Thursday
Partly sunny, with a high near 48. East wind 3 to 5 mph.
Thursday Night
Patchy fog before 7pm. Otherwise, partly cloudy, with a low around 41. Calm wind becoming east southeast around 5 mph after midnight.
Friday
Mostly cloudy, then gradually becoming sunny, with a high near 50. East northeast wind around 5 mph.
Friday Night
Patchy fog after 1am. Otherwise, partly cloudy, with a low around 41. Light east southeast wind.
Saturday
Patchy fog before 11am. Otherwise, mostly sunny, with a high near 56.
Saturday Night
Patchy fog after 2am. Otherwise, partly cloudy, with a low around 42.
Sunday
Areas of fog before 10am. Otherwise, partly sunny, with a high near 56.
Sunday Night
Patchy fog after 5am. Otherwise, mostly cloudy, with a low around 43.
Monday
Patchy fog before 9am. Otherwise, mostly cloudy, with a high near 56.
Monday Night
A slight chance of rain. Mostly cloudy, with a low around 50.
Tuesday
A chance of rain. Mostly cloudy, with a high near 60.
Tuesday Night
A chance of rain. Mostly cloudy, with a low around 53.
Wednesday
A slight chance of rain. Mostly cloudy, with a high near 60.
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ABOUT THIS FORECAST

 
Point Forecast:
Antioch CA
 38°N 121.81°W (Elev. 36 ft)
12:26 am PST Dec 11, 2025
1am PST Dec 11, 2025-6pm PST Dec 17, 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