Another Arctic Blast in the East; Eastern U.S. Winter Storm

A powerful Arctic blast will bring dangerously cold, record low temperatures to the upper Ohio Valley, Mid-Atlantic, Gulf Coast and Southeast U.S. this weekend. A rapidly deepening storm will produce widespread heavy snow and wind from the southern Appalachians across the Carolinas and southern Virginia into Sunday. Storm-force winds and coastal flooding will be possible along the East Coast. Read More >

Current conditions at

BLACK DIAMOND (PIBC1)

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

NA

54°F

12°C

Humidity 84%
Wind Speed S 4 MPH
Barometer NA
Dewpoint 49°F (9°C)
Visibility NA
Last update 31 Jan 10:28 PM PST
Extended Forecast for

Brentwood CA

  • Tonight

    Tonight: Patchy dense fog.  Otherwise, mostly cloudy, with a low around 42. Calm wind.

    Low: 42 °F

    Patchy Dense
    Fog

  • Sunday

    Sunday: Areas of dense fog before 10am.  Otherwise, mostly cloudy, with a high near 63. Light and variable wind becoming north northwest 5 to 10 mph in the afternoon.

    High: 63 °F

    Areas Dense
    Fog then
    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 44. West wind around 8 mph, with gusts as high as 18 mph.

    Low: 44 °F

    Decreasing
    Clouds

  • Monday

    Monday: Sunny, with a high near 64. North wind 5 to 8 mph.

    High: 64 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 41. Calm wind.

    Low: 41 °F

    Mostly Clear

  • Tuesday

    Tuesday: Patchy fog before 7am.  Otherwise, sunny, with a high near 63.

    High: 63 °F

    Patchy Fog
    then Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 42.

    Low: 42 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 64.

    High: 64 °F

    Sunny

  • Wednesday Night

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

    Low: 43 °F

    Partly Cloudy

Detailed Forecast

Tonight
Patchy dense fog. Otherwise, mostly cloudy, with a low around 42. Calm wind.
Sunday
Areas of dense fog before 10am. Otherwise, mostly cloudy, with a high near 63. Light and variable wind becoming north northwest 5 to 10 mph in the afternoon.
Sunday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 44. West wind around 8 mph, with gusts as high as 18 mph.
Monday
Sunny, with a high near 64. North wind 5 to 8 mph.
Monday Night
Mostly clear, with a low around 41. Calm wind.
Tuesday
Patchy fog before 7am. Otherwise, sunny, with a high near 63.
Tuesday Night
Mostly clear, with a low around 42.
Wednesday
Sunny, with a high near 64.
Wednesday Night
Partly cloudy, with a low around 43.
Thursday
Mostly sunny, with a high near 64.
Thursday Night
Partly cloudy, with a low around 46.
Friday
Mostly sunny, with a high near 66.
Friday Night
Partly cloudy, with a low around 46.
Saturday
Partly sunny, with a high near 65.
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ABOUT THIS FORECAST

 
Point Forecast:
Brentwood CA
 37.93°N 121.7°W (Elev. 75 ft)
8:12 pm PST Jan 31, 2026
11pm PST Jan 31, 2026-6pm PST Feb 7, 2026
 
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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