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

Arctic Air for the Northeast and Mid-Atlantic; Increase Moisture for Pacific Northwest; Active Pattern for Hawaii

An arctic cold front will impact the Great Lakes, Northeast and mid-Atlantic. Snow showers and squalls will accompany this system with increasing winds and falling temperatures. Damaging wind gusts may result in tree damage and power outages. Meanwhile, moisture returns for the Pacific Northwest and Hawaii this weekend with both coverage and intensity of rainfall and higher elevation snows. Read More >

Current conditions at

BLACK DIAMOND (PIBC1)

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

NA

57°F

14°C

Humidity 42%
Wind Speed SSE 8 MPH
Barometer NA
Dewpoint 34°F (1°C)
Visibility NA
Last update 06 Feb 09:28 PM PST
Extended Forecast for

Brentwood CA

  • Tonight

    Tonight: Patchy fog after 4am. Otherwise, mostly clear, with a low around 45. West northwest wind 3 to 5 mph.

    Low: 45 °F

    Mostly Clear
    then Patchy
    Fog

  • Saturday

    Saturday: Patchy fog before 9am. Otherwise, mostly sunny, with a high near 67. Northwest wind 3 to 7 mph.

    High: 67 °F

    Patchy Fog
    then Mostly
    Sunny

  • Saturday Night

    Saturday Night: Patchy fog after 4am. Otherwise, partly cloudy, with a low around 44. West southwest wind 3 to 5 mph.

    Low: 44 °F

    Mostly Clear
    then Patchy
    Fog

  • Sunday

    Sunday: Patchy fog before 8am. Otherwise, mostly sunny, with a high near 66. West wind 3 to 6 mph.

    High: 66 °F

    Patchy Fog
    then Mostly
    Sunny

  • Sunday Night

    Sunday Night: A 20 percent chance of rain before 10pm. Patchy fog after 10pm. Otherwise, mostly cloudy, with a low around 50. West southwest wind around 6 mph.

    Low: 50 °F

    Slight Chance
    Rain and
    Patchy Fog
    then Patchy
    Fog

  • Monday

    Monday: Patchy fog before 9am. Otherwise, mostly cloudy, with a high near 62.

    High: 62 °F

    Patchy Fog
    then Mostly
    Cloudy

  • Monday Night

    Monday Night: A 20 percent chance of rain after 10pm. Mostly cloudy, with a low around 44.

    Low: 44 °F

    Slight Chance
    Rain

  • Tuesday

    Tuesday: A chance of rain. Mostly cloudy, with a high near 55.

    High: 55 °F

    Chance Rain

  • Tuesday Night

    Tuesday Night: A chance of rain, mainly before 4am. Patchy fog after 2am. Otherwise, mostly cloudy, with a low around 43.

    Low: 43 °F

    Chance Rain
    and Patchy
    Fog

Detailed Forecast

Tonight
Patchy fog after 4am. Otherwise, mostly clear, with a low around 45. West northwest wind 3 to 5 mph.
Saturday
Patchy fog before 9am. Otherwise, mostly sunny, with a high near 67. Northwest wind 3 to 7 mph.
Saturday Night
Patchy fog after 4am. Otherwise, partly cloudy, with a low around 44. West southwest wind 3 to 5 mph.
Sunday
Patchy fog before 8am. Otherwise, mostly sunny, with a high near 66. West wind 3 to 6 mph.
Sunday Night
A 20 percent chance of rain before 10pm. Patchy fog after 10pm. Otherwise, mostly cloudy, with a low around 50. West southwest wind around 6 mph.
Monday
Patchy fog before 9am. Otherwise, mostly cloudy, with a high near 62.
Monday Night
A 20 percent chance of rain after 10pm. Mostly cloudy, with a low around 44.
Tuesday
A chance of rain. Mostly cloudy, with a high near 55.
Tuesday Night
A chance of rain, mainly before 4am. Patchy fog after 2am. Otherwise, mostly cloudy, with a low around 43.
Wednesday
A slight chance of rain before 10am. Areas of fog before 9am. Otherwise, partly sunny, with a high near 58.
Wednesday Night
Mostly clear, with a low around 41.
Thursday
Patchy fog. Otherwise, sunny, with a high near 61.
Thursday Night
Partly cloudy, with a low around 41.
Friday
A chance of rain. 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:
2:55 pm PST Feb 6, 2026
Forecast Valid:
10pm PST Feb 6, 2026-6pm PST Feb 13, 2026
 
Forecast Discussion
 
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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