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

Prolonged Extreme Cold; Eastern U.S. Winter Storm

Another Arctic blast will surge south across the northern Plains Thursday night, crossing the Midwest and reaching the Gulf Coast Friday night. Confidence continues to increase for significant heavy snow across much of the Southern Appalachians, Carolinas, and southern Mid-Atlantic Friday into Sunday. Read More >

Current conditions at

BLACK DIAMOND (PIBC1)

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

NA

50°F

10°C

Humidity 89%
Wind Speed SSW 3 MPH
Barometer NA
Dewpoint 47°F (8°C)
Visibility NA
Last update 28 Jan 06:28 PM PST
Extended Forecast for

Brentwood CA

  • Tonight

    Tonight: Increasing clouds, with a low around 42. Northwest wind around 5 mph becoming calm in the evening.

    Low: 42 °F

    Increasing
    Clouds

  • Thursday

    Thursday: Mostly sunny, with a high near 60. Calm wind becoming north northeast around 5 mph in the afternoon.

    High: 60 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Patchy fog after 5am. Otherwise, increasing clouds, with a low around 41. Calm wind.

    Low: 41 °F

    Partly Cloudy
    then Patchy
    Fog

  • Friday

    Friday: Patchy fog before 9am. Otherwise, mostly cloudy, with a high near 60. Calm wind becoming northeast around 5 mph in the afternoon.

    High: 60 °F

    Patchy Fog
    then Partly
    Sunny

  • Friday Night

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

    Low: 43 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly cloudy, with a high near 62.

    High: 62 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 44.

    Low: 44 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly cloudy, with a high near 62.

    High: 62 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 46.

    Low: 46 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Increasing clouds, with a low around 42. Northwest wind around 5 mph becoming calm in the evening.
Thursday
Mostly sunny, with a high near 60. Calm wind becoming north northeast around 5 mph in the afternoon.
Thursday Night
Patchy fog after 5am. Otherwise, increasing clouds, with a low around 41. Calm wind.
Friday
Patchy fog before 9am. Otherwise, mostly cloudy, with a high near 60. Calm wind becoming northeast around 5 mph in the afternoon.
Friday Night
Mostly cloudy, with a low around 43. Calm wind.
Saturday
Mostly cloudy, with a high near 62.
Saturday Night
Mostly cloudy, with a low around 44.
Sunday
Mostly cloudy, with a high near 62.
Sunday Night
Mostly cloudy, with a low around 46.
Monday
Mostly sunny, with a high near 62.
Monday Night
Mostly clear, with a low around 43.
Tuesday
Sunny, with a high near 61.
Tuesday Night
Patchy fog. Otherwise, mostly clear, with a low around 42.
Wednesday
Patchy fog. Otherwise, mostly sunny, with a high near 63.
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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 28, 2026
Forecast Valid:
7pm PST Jan 28, 2026-6pm PST Feb 4, 2026
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation