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

Tracking Winter Weather and Frigid Temperatures Through This Weekend

A clipper storm will move across the Great Lakes through this weekend with periods of light snow, gusty winds, and lake effect snow bands which could make for hazardous travel at times. A frigid airmass will spread eastward behind this storm into the Midwest and Eastern U.S. through the weekend. Read More >

Current conditions at

BLACK DIAMOND (PIBC1)

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

NA

62°F

17°C

Humidity 22%
Wind Speed NNW 5 MPH
Barometer NA
Dewpoint 23°F (-5°C)
Visibility NA
Last update 16 Jan 05:28 PM PST
Extended Forecast for

Brentwood CA

  • Tonight

    Tonight: Patchy dense fog after 11pm. Otherwise, increasing clouds, with a low around 39. Calm wind.

    Low: 39 °F

    Patchy Dense
    Fog

  • Saturday

    Saturday: Areas of dense fog before 10am. Otherwise, partly sunny, with a high near 57. Calm wind becoming northeast around 5 mph in the afternoon.

    High: 57 °F

    Areas Dense
    Fog then
    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 43. Calm wind.

    Low: 43 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly cloudy, then gradually becoming sunny, with a high near 62. Light north northeast wind.

    High: 62 °F

    Decreasing
    Clouds

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 42. Calm wind.

    Low: 42 °F

    Mostly Clear

  • M.L.King Day

    M.L.King Day: Mostly sunny, with a high near 60.

    High: 60 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Patchy fog after 3am. Otherwise, partly cloudy, with a low around 41.

    Low: 41 °F

    Mostly Clear
    then Patchy
    Fog

  • Tuesday

    Tuesday: Patchy fog before 10am. Otherwise, mostly sunny, with a high near 60.

    High: 60 °F

    Patchy Fog
    then Mostly
    Sunny

  • Tuesday Night

    Tuesday Night: Patchy fog after 5am. Otherwise, partly cloudy, with a low around 41.

    Low: 41 °F

    Partly Cloudy
    then Patchy
    Fog

Detailed Forecast

Tonight
Patchy dense fog after 11pm. Otherwise, increasing clouds, with a low around 39. Calm wind.
Saturday
Areas of dense fog before 10am. Otherwise, partly sunny, with a high near 57. Calm wind becoming northeast around 5 mph in the afternoon.
Saturday Night
Mostly cloudy, with a low around 43. Calm wind.
Sunday
Mostly cloudy, then gradually becoming sunny, with a high near 62. Light north northeast wind.
Sunday Night
Mostly clear, with a low around 42. Calm wind.
M.L.King Day
Mostly sunny, with a high near 60.
Monday Night
Patchy fog after 3am. Otherwise, partly cloudy, with a low around 41.
Tuesday
Patchy fog before 10am. Otherwise, mostly sunny, with a high near 60.
Tuesday Night
Patchy fog after 5am. Otherwise, partly cloudy, with a low around 41.
Wednesday
Patchy fog before 8am. Otherwise, partly sunny, with a high near 60.
Wednesday Night
Patchy fog. Otherwise, partly cloudy, with a low around 44.
Thursday
Patchy fog. Otherwise, partly sunny, with a high near 60.
Thursday Night
Patchy fog. Otherwise, partly cloudy, with a low around 45.
Friday
Patchy fog. Otherwise, mostly sunny, with a high near 59.
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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:
12:26 pm PST Jan 16, 2026
Forecast Valid:
6pm PST Jan 16, 2026-6pm PST Jan 23, 2026
 
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Additional Resources

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Chance of Precipitation