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

BLACK DIAMOND (PIBC1)

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

NA

40°F

4°C

Humidity 100%
Wind Speed N 5 MPH
Barometer NA
Dewpoint 40°F (4°C)
Visibility NA
Wind Chill36°F (2°C)
Last update 28 Nov 07:28 PM PST
Extended Forecast for

Brentwood CA

  • Tonight

    Tonight: Mostly cloudy, with a low around 41. Calm wind.

    Low: 41 °F

    Mostly Cloudy

  • Saturday

    Saturday: Patchy fog before 9am. Otherwise, mostly sunny, with a high near 57. Light and variable wind.

    High: 57 °F

    Patchy Fog
    then Mostly
    Sunny

  • Saturday Night

    Saturday Night: Patchy fog after 5am. Otherwise, partly cloudy, with a low around 42. Calm wind.

    Low: 42 °F

    Partly Cloudy
    then Patchy
    Fog

  • Sunday

    Sunday: Patchy fog before 8am. Otherwise, mostly sunny, with a high near 60. Calm wind becoming north around 5 mph in the afternoon.

    High: 60 °F

    Patchy Fog
    then Mostly
    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 42. Calm wind.

    Low: 42 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 60.

    High: 60 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 43.

    Low: 43 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 62.

    High: 62 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 44.

    Low: 44 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 41. Calm wind.
Saturday
Patchy fog before 9am. Otherwise, mostly sunny, with a high near 57. Light and variable wind.
Saturday Night
Patchy fog after 5am. Otherwise, partly cloudy, with a low around 42. Calm wind.
Sunday
Patchy fog before 8am. Otherwise, mostly sunny, with a high near 60. Calm wind becoming north around 5 mph in the afternoon.
Sunday Night
Partly cloudy, with a low around 42. Calm wind.
Monday
Mostly sunny, with a high near 60.
Monday Night
Partly cloudy, with a low around 43.
Tuesday
Mostly sunny, with a high near 62.
Tuesday Night
Partly cloudy, with a low around 44.
Wednesday
Mostly sunny, with a high near 62.
Wednesday Night
Mostly clear, with a low around 42.
Thursday
Mostly sunny, with a high near 61.
Thursday Night
Mostly clear, with a low around 43.
Friday
Sunny, with a high near 62.
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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:
8:39 pm PST Nov 28, 2025
Forecast Valid:
8pm PST Nov 28, 2025-6pm PST Dec 5, 2025
 
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Additional Resources

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Chance of Precipitation