National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Tracking Weekend Storm Impacts

A storm and trailing cold front will continue to slowly move through the Gulf Coast and Southeast U.S. through this weekend with widespread rain showers and isolated thunderstorms. Some snow and a wintry mix is occurring today to the north. A fast-moving clipper storm may bring several inches of snow to the north-central Plains, Midwest, eastern Great Lakes, and Northeast regions this weekend. Read More >

Hazardous Weather Conditions

Current conditions at

BLACK DIAMOND (PIBC1)

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

NA

46°F

8°C

Humidity 58%
Wind Speed NE 3 MPH
Barometer NA
Dewpoint 32°F (0°C)
Visibility NA
Last update 05 Dec 07:28 AM PST
Extended Forecast for

Antioch CA

Dense Fog Advisory December 5, 07:53am until December 5, 11:00am
Click here for hazard details and duration
...
  •  
    Dense Fog Advisory December 5, 07:53am until December 5, 11:00am

    NOW until 11:00am Fri

    Dense Fog Advisory

  • Today

    High: 55 °F

    Decreasing
    Clouds

  • Tonight

    Tonight: Partly cloudy, with a low around 42. Southeast wind 5 to 8 mph becoming calm.

    Low: 42 °F

    Partly Cloudy

  • Saturday

    Saturday: Patchy fog before 9am. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 59. Light north northwest wind.

    High: 59 °F

    Patchy Fog
    then Mostly
    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 45. Light and variable wind.

    Low: 45 °F

    Mostly Clear

  • Sunday

    Sunday: Partly sunny, with a high near 60. Light and variable wind.

    High: 60 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 46.

    Low: 46 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 61.

    High: 61 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 46.

    Low: 46 °F

    Partly Cloudy

Detailed Forecast

Today
Mostly cloudy, then gradually becoming sunny, with a high near 55. East southeast wind around 5 mph becoming calm in the afternoon.
Tonight
Partly cloudy, with a low around 42. Southeast wind 5 to 8 mph becoming calm.
Saturday
Patchy fog before 9am. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 59. Light north northwest wind.
Saturday Night
Mostly clear, with a low around 45. Light and variable wind.
Sunday
Partly sunny, with a high near 60. Light and variable wind.
Sunday Night
Partly cloudy, with a low around 46.
Monday
Mostly sunny, with a high near 61.
Monday Night
Partly cloudy, with a low around 46.
Tuesday
Partly sunny, with a high near 61.
Tuesday Night
Partly cloudy, with a low around 47.
Wednesday
Patchy fog. Otherwise, mostly sunny, with a high near 63.
Wednesday Night
Patchy fog. Otherwise, mostly clear, with a low around 48.
Thursday
Patchy fog. Otherwise, mostly sunny, with a high near 62.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Antioch CA
 38°N 121.81°W (Elev. 36 ft)
Last Update:
1:40 am PST Dec 5, 2025
Forecast Valid:
7am PST Dec 5, 2025-6pm PST Dec 11, 2025
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation