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

Hazardous Weather Conditions

Current conditions at

BLACK DIAMOND (PIBC1)

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

NA

51°F

11°C

Humidity 81%
Wind Speed N 5 MPH
Barometer NA
Dewpoint 45°F (7°C)
Visibility NA
Last update 25 Nov 01:28 AM PST
Extended Forecast for

Brentwood CA

Dense Fog Advisory November 25, 01:56am until November 25, 11:00am
Click here for hazard details and duration
Dense Fog Advisory
  •  
    Dense Fog Advisory November 25, 01:56am until November 25, 11:00am

    NOW until 11:00am Tue

    Dense Fog Advisory

  • Overnight

    Low: 44 °F

    Patchy Dense
    Fog

  • Tuesday

    Tuesday: Areas of dense fog before 9am. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 59. Light and variable wind.

    High: 59 °F

    Areas Dense
    Fog then
    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Patchy dense fog after 4am. Otherwise, partly cloudy, with a low around 42. Calm wind.

    Low: 42 °F

    Partly Cloudy
    then Patchy
    Dense Fog

  • Wednesday

    Wednesday: Areas of dense fog before 10am. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 61. Light east northeast wind.

    High: 61 °F

    Areas Dense
    Fog then
    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 43. Calm wind.

    Low: 43 °F

    Partly Cloudy

  • Thanksgiving Day

    Thanksgiving Day: Partly sunny, with a high near 63.

    High: 63 °F

    Partly Sunny

  • Thursday Night

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

    Low: 45 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 63.

    High: 63 °F

    Mostly Sunny

Detailed Forecast

Overnight
Patchy dense fog. Otherwise, mostly cloudy, with a low around 44. Light southeast wind.
Tuesday
Areas of dense fog before 9am. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 59. Light and variable wind.
Tuesday Night
Patchy dense fog after 4am. Otherwise, partly cloudy, with a low around 42. Calm wind.
Wednesday
Areas of dense fog before 10am. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 61. Light east northeast wind.
Wednesday Night
Partly cloudy, with a low around 43. Calm wind.
Thanksgiving Day
Partly sunny, with a high near 63.
Thursday Night
Partly cloudy, with a low around 45.
Friday
Mostly sunny, with a high near 63.
Friday Night
Partly cloudy, with a low around 44.
Saturday
Mostly sunny, with a high near 61.
Saturday Night
Partly cloudy, with a low around 43.
Sunday
Mostly sunny, with a high near 60.
Sunday Night
Mostly clear, with a low around 42.
Monday
Sunny, with a high near 61.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Brentwood CA
 37.93°N 121.7°W (Elev. 75 ft)
Last Update:
1:17 am PST Nov 25, 2025
Forecast Valid:
1am PST Nov 25, 2025-6pm PST Dec 1, 2025
 
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Additional Resources

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