Prolonged Atmospheric River in the Pacific Northwest; Snow and High Winds in the North-Central U.S.

A prolonged atmospheric river will continue impacting the Pacific Northwest with heavy rainfall which has lead to areas of urban and river flooding along with gusty winds into Thursday. A clipper will bring heavy snow, some mixed wintry precipitation, and gusty to high winds across the northern Plains, Upper Midwest, and the Great Lakes into Thursday morning. Read More >

Current conditions at

BLACK DIAMOND (PIBC1)

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

NA

49°F

9°C

Humidity 73%
Wind Speed NNE 5 MPH
Barometer NA
Dewpoint 41°F (5°C)
Visibility NA
Wind Chill47°F (8°C)
Last update 09 Dec 08:28 AM PST
Extended Forecast for

Antioch CA

  • Today

    Today: Patchy fog before 10am.  Otherwise, partly sunny, with a high near 48. Calm wind becoming east northeast around 5 mph.

    High: 48 °F

    Patchy Fog
    then Mostly
    Sunny

  • Tonight

    Tonight: Patchy dense fog between midnight and 5am.  Otherwise, mostly cloudy, with a low around 44. Calm wind.

    Low: 44 °F

    Patchy Dense
    Fog

  • Wednesday

    Wednesday: Patchy dense fog before 10am.  Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 56. Calm wind becoming northeast around 5 mph in the afternoon.

    High: 56 °F

    Patchy Dense
    Fog then
    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 44. Calm wind.

    Low: 44 °F

    Partly Cloudy

  • Thursday

    Thursday: Patchy fog before 10am.  Otherwise, mostly sunny, with a high near 60. Calm wind becoming north northeast around 5 mph in the afternoon.

    High: 60 °F

    Patchy Fog
    then Mostly
    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 43.

    Low: 43 °F

    Mostly Clear

  • Friday

    Friday: Patchy fog before 10am.  Otherwise, mostly sunny, with a high near 57.

    High: 57 °F

    Patchy Fog
    then Mostly
    Sunny

  • Friday Night

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

    Low: 43 °F

    Partly Cloudy
    then Patchy
    Fog

  • Saturday

    Saturday: Patchy fog before 10am.  Otherwise, partly sunny, with a high near 56.

    High: 56 °F

    Patchy Fog
    then Mostly
    Sunny

Detailed Forecast

Today
Patchy fog before 10am. Otherwise, partly sunny, with a high near 48. Calm wind becoming east northeast around 5 mph.
Tonight
Patchy dense fog between midnight and 5am. Otherwise, mostly cloudy, with a low around 44. Calm wind.
Wednesday
Patchy dense fog before 10am. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 56. Calm wind becoming northeast around 5 mph in the afternoon.
Wednesday Night
Partly cloudy, with a low around 44. Calm wind.
Thursday
Patchy fog before 10am. Otherwise, mostly sunny, with a high near 60. Calm wind becoming north northeast around 5 mph in the afternoon.
Thursday Night
Mostly clear, with a low around 43.
Friday
Patchy fog before 10am. Otherwise, mostly sunny, with a high near 57.
Friday Night
Patchy fog after 5am. Otherwise, partly cloudy, with a low around 43.
Saturday
Patchy fog before 10am. Otherwise, partly sunny, with a high near 56.
Saturday Night
Patchy fog after 2am. Otherwise, partly cloudy, with a low around 44.
Sunday
Areas of fog. Otherwise, partly sunny, with a high near 57.
Sunday Night
Patchy fog. Otherwise, mostly cloudy, with a low around 46.
Monday
A slight chance of rain. Patchy fog. Otherwise, mostly cloudy, with a high near 58.
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ABOUT THIS FORECAST

 
Point Forecast:
Antioch CA
 38°N 121.81°W (Elev. 36 ft)
9:23 am PST Dec 9, 2025
9am PST Dec 9, 2025-6pm PST Dec 15, 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