Late January Extreme Cold; Watching for Another East Coast Storm Threat This Weekend

Well below normal temperatures will continue for the eastern half of the Lower 48 this week. Another blast of arctic air will spread from the Plains through the East/Southeast Friday into Saturday with more record lows expected even into Florida. Forecasts are being monitored for increasing potential of another significant winter storm to impact the eastern United States this coming weekend. Read More >

Current conditions at

BLACK DIAMOND (PIBC1)

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

NA

55°F

13°C

Humidity 70%
Wind Speed SSW 5 MPH
Barometer NA
Dewpoint 45°F (7°C)
Visibility NA
Last update 27 Jan 02:28 PM PST
Extended Forecast for

Brentwood CA

  • This Afternoon

    This Afternoon: Mostly sunny early, then becoming cloudy, with a high near 60. Calm wind.

    High: 60 °F

    Becoming
    Cloudy

  • Tonight

    Tonight: A 30 percent chance of rain.  Patchy fog after 3am.  Otherwise, cloudy, then gradually becoming partly cloudy, with a low around 48. South wind around 6 mph becoming calm  after midnight.  New precipitation amounts of less than a tenth of an inch possible.

    Low: 48 °F

    Chance Rain
    and Patchy
    Fog

  • Wednesday

    Wednesday: Mostly cloudy, then gradually becoming sunny, with a high near 59. North northwest wind 3 to 7 mph.

    High: 59 °F

    Decreasing
    Clouds

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 42. Light west wind.

    Low: 42 °F

    Partly Cloudy

  • Thursday

    Thursday: Patchy fog before 9am.  Otherwise, mostly sunny, with a high near 59. Calm wind becoming north around 5 mph in the afternoon.

    High: 59 °F

    Patchy Fog
    then Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 43.

    Low: 43 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly cloudy, with a high near 60.

    High: 60 °F

    Mostly Cloudy

  • Friday Night

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

    Low: 44 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly cloudy, with a high near 62.

    High: 62 °F

    Mostly Cloudy

Detailed Forecast

This Afternoon
Mostly sunny early, then becoming cloudy, with a high near 60. Calm wind.
Tonight
A 30 percent chance of rain. Patchy fog after 3am. Otherwise, cloudy, then gradually becoming partly cloudy, with a low around 48. South wind around 6 mph becoming calm after midnight. New precipitation amounts of less than a tenth of an inch possible.
Wednesday
Mostly cloudy, then gradually becoming sunny, with a high near 59. North northwest wind 3 to 7 mph.
Wednesday Night
Partly cloudy, with a low around 42. Light west wind.
Thursday
Patchy fog before 9am. Otherwise, mostly sunny, with a high near 59. Calm wind becoming north around 5 mph in the afternoon.
Thursday Night
Mostly cloudy, with a low around 43.
Friday
Mostly cloudy, with a high near 60.
Friday Night
Mostly cloudy, with a low around 44.
Saturday
Mostly cloudy, with a high near 62.
Saturday Night
Mostly cloudy, with a low around 44.
Sunday
A slight chance of rain. Mostly cloudy, with a high near 61.
Sunday Night
A slight chance of rain. Mostly cloudy, with a low around 48.
Monday
Mostly sunny, with a high near 60.
Monday Night
Partly cloudy, with a low around 43.
Tuesday
Mostly sunny, with a high near 61.
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ABOUT THIS FORECAST

 
Point Forecast:
Brentwood CA
 37.93°N 121.7°W (Elev. 75 ft)
12:26 pm PST Jan 27, 2026
3pm PST Jan 27, 2026-6pm PST Feb 3, 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