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. 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 >

Current conditions at

BLACK DIAMOND (PIBC1)

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

NA

45°F

7°C

Humidity 84%
Wind Speed NNE 3 MPH
Barometer NA
Dewpoint 40°F (4°C)
Visibility NA
Last update 07 Dec 02:28 AM PST
Extended Forecast for

Brentwood CA

  • Overnight

    Overnight: Areas of dense fog. Otherwise, mostly cloudy, with a low around 42. Light south southeast wind.

    Low: 42 °F

    Areas Dense
    Fog

  • Sunday

    Sunday: Areas of dense fog before 9am. Otherwise, mostly cloudy, with a high near 53. East southeast wind around 5 mph becoming calm in the morning.

    High: 53 °F

    Areas Dense
    Fog then
    Partly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 42. Northwest wind 3 to 6 mph.

    Low: 42 °F

    Partly Cloudy

  • Monday

    Monday: Mostly cloudy, then gradually becoming sunny, with a high near 57. Light north wind.

    High: 57 °F

    Decreasing
    Clouds

  • Monday Night

    Monday Night: Patchy fog between 2am and 4am. Otherwise, partly cloudy, with a low around 43. North northwest wind around 6 mph becoming calm after midnight.

    Low: 43 °F

    Mostly Clear
    then Patchy
    Fog

  • Tuesday

    Tuesday: Patchy fog between 7am and 10am. Otherwise, partly sunny, with a high near 58.

    High: 58 °F

    Patchy Fog
    then Mostly
    Sunny

  • Tuesday Night

    Tuesday Night: Patchy fog after 5am. Otherwise, partly cloudy, with a low around 45.

    Low: 45 °F

    Partly Cloudy
    then Patchy
    Fog

  • Wednesday

    Wednesday: Patchy fog before 8am. Otherwise, mostly sunny, with a high near 61.

    High: 61 °F

    Patchy Fog
    then Mostly
    Sunny

  • Wednesday Night

    Wednesday Night: Patchy fog after 3am. Otherwise, partly cloudy, with a low around 46.

    Low: 46 °F

    Mostly Clear
    then Patchy
    Fog

Detailed Forecast

Overnight
Areas of dense fog. Otherwise, mostly cloudy, with a low around 42. Light south southeast wind.
Sunday
Areas of dense fog before 9am. Otherwise, mostly cloudy, with a high near 53. East southeast wind around 5 mph becoming calm in the morning.
Sunday Night
Partly cloudy, with a low around 42. Northwest wind 3 to 6 mph.
Monday
Mostly cloudy, then gradually becoming sunny, with a high near 57. Light north wind.
Monday Night
Patchy fog between 2am and 4am. Otherwise, partly cloudy, with a low around 43. North northwest wind around 6 mph becoming calm after midnight.
Tuesday
Patchy fog between 7am and 10am. Otherwise, partly sunny, with a high near 58.
Tuesday Night
Patchy fog after 5am. Otherwise, partly cloudy, with a low around 45.
Wednesday
Patchy fog before 8am. Otherwise, mostly sunny, with a high near 61.
Wednesday Night
Patchy fog after 3am. Otherwise, partly cloudy, with a low around 46.
Thursday
Patchy fog before 9am. Otherwise, mostly sunny, with a high near 62.
Thursday Night
Patchy fog. Otherwise, partly cloudy, with a low around 44.
Friday
Patchy fog. Otherwise, mostly sunny, with a high near 61.
Friday Night
Patchy fog. Otherwise, partly cloudy, with a low around 44.
Saturday
Patchy fog. Otherwise, mostly sunny, with a high near 61.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Brentwood CA
 37.93°N 121.7°W (Elev. 75 ft)
Last Update:
2:33 am PST Dec 7, 2025
Forecast Valid:
3am PST Dec 7, 2025-6pm PST Dec 13, 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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation