Winter Weather Across Portions of the Mid-Atlantic; Heavy Rain Along the Gulf Coast and Southeast

A storm system will continue to slowly move through the Gulf Coast and Southeast U.S. over the next couple of days, bringing a heavy rainfall threat through the weekend. Isolated instances of flooding may occur. On the north side of this storm system, colder air will support areas of mixed wintry precipitation and light snow from the Tennessee Valley to the Mid-Atlantic Friday. Read More >

Current conditions at

BLACK DIAMOND (PIBC1)

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

NA

49°F

9°C

Humidity 40%
Wind Speed NNE 4 MPH
Barometer NA
Dewpoint 26°F (-3°C)
Visibility NA
Wind Chill48°F (9°C)
Last update 05 Dec 03:28 AM PST
Extended Forecast for

Brentwood CA

Cold Weather Advisory December 5, 03:48am until December 5, 08:00am
Click here for hazard details and duration
Cold Weather Advisory
  •  
    Cold Weather Advisory December 5, 03:48am until December 5, 08:00am

    NOW until 8:00am Fri

    Cold Weather Advisory

  • Overnight

    Low: 35 °F

    Patchy Frost
    and Areas Fog

  • Friday

    Friday: Areas of frost before 8am.  Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 54. East southeast wind around 5 mph becoming calm  in the morning.

    High: 54 °F

    Areas Frost
    then Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 42. South southeast wind around 6 mph becoming calm  after midnight.

    Low: 42 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 58. North northwest wind 3 to 6 mph.

    High: 58 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 44. West northwest wind around 5 mph.

    Low: 44 °F

    Partly Cloudy

  • Sunday

    Sunday: Patchy fog before 9am.  Otherwise, partly sunny, with a high near 60.

    High: 60 °F

    Patchy Fog
    then Mostly
    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 45.

    Low: 45 °F

    Partly Cloudy

  • Monday

    Monday: Patchy fog between 7am and 8am.  Otherwise, mostly sunny, with a high near 62.

    High: 62 °F

    Patchy Fog
    then Mostly
    Sunny

Detailed Forecast

Overnight
Areas of fog. Patchy frost. Otherwise, mostly cloudy, with a low around 35. Calm wind.
Friday
Areas of frost before 8am. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 54. East southeast wind around 5 mph becoming calm in the morning.
Friday Night
Partly cloudy, with a low around 42. South southeast wind around 6 mph becoming calm after midnight.
Saturday
Mostly sunny, with a high near 58. North northwest wind 3 to 6 mph.
Saturday Night
Partly cloudy, with a low around 44. West northwest wind around 5 mph.
Sunday
Patchy fog before 9am. Otherwise, partly sunny, with a high near 60.
Sunday Night
Partly cloudy, with a low around 45.
Monday
Patchy fog between 7am and 8am. Otherwise, mostly sunny, with a high near 62.
Monday Night
Partly cloudy, with a low around 45.
Tuesday
Partly sunny, with a high near 61.
Tuesday Night
Patchy fog. Otherwise, partly cloudy, with a low around 46.
Wednesday
Patchy fog. Otherwise, mostly sunny, with a high near 64.
Wednesday Night
Patchy fog. Otherwise, mostly clear, with a low around 47.
Thursday
Patchy fog. Otherwise, mostly sunny, with a high near 63.
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ABOUT THIS FORECAST

 
Point Forecast:
Brentwood CA
 37.93°N 121.7°W (Elev. 75 ft)
1:40 am PST Dec 5, 2025
3am PST Dec 5, 2025-6pm PST Dec 11, 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