Heavy Great Lakes Snow through Friday; Watching Potential for Major Winter Storm Late Week into this Weekend

Heavy lake effect snow will continue in the Great Lakes into Wednesday before another storm brings a widespread general snow followed by another round of heavy lake effect snow. A wide-ranging winter storm will produce great swaths of heavy snow, sleet, and treacherous freezing rain from the southern Rockies/Plains and Mid-South starting Friday and shifting toward the East Coast through Sunday. Read More >

Current conditions at

BLACK DIAMOND (PIBC1)

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

NA

48°F

9°C

Humidity 74%
Wind Speed N 8 MPH
Barometer NA
Dewpoint 40°F (4°C)
Visibility NA
Wind Chill44°F (7°C)
Last update 20 Jan 06:28 AM PST
Extended Forecast for

Brentwood CA

  • Today

    Today: Patchy dense fog before 11am.  Otherwise, mostly cloudy, with a high near 55. Light and variable wind.

    High: 55 °F

    Patchy Dense
    Fog then
    Mostly Cloudy

  • Tonight

    Tonight: Mostly cloudy, with a low around 44. Calm wind.

    Low: 44 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Cloudy, with a high near 59. Calm wind.

    High: 59 °F

    Cloudy

  • Wednesday Night

    Wednesday Night: Cloudy, with a low around 46. Calm wind.

    Low: 46 °F

    Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 62. Calm wind becoming northwest around 5 mph in the afternoon.

    High: 62 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 44.

    Low: 44 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 60.

    High: 60 °F

    Mostly Sunny

  • Friday Night

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

    Low: 42 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 60.

    High: 60 °F

    Mostly Sunny

Detailed Forecast

Today
Patchy dense fog before 11am. Otherwise, mostly cloudy, with a high near 55. Light and variable wind.
Tonight
Mostly cloudy, with a low around 44. Calm wind.
Wednesday
Cloudy, with a high near 59. Calm wind.
Wednesday Night
Cloudy, with a low around 46. Calm wind.
Thursday
Partly sunny, with a high near 62. Calm wind becoming northwest around 5 mph in the afternoon.
Thursday Night
Partly cloudy, with a low around 44.
Friday
Mostly sunny, with a high near 60.
Friday Night
Mostly clear, with a low around 42.
Saturday
Mostly sunny, with a high near 60.
Saturday Night
Partly cloudy, with a low around 42.
Sunday
Partly sunny, with a high near 59.
Sunday Night
Patchy fog. Otherwise, mostly cloudy, with a low around 42.
Monday
Patchy fog. Otherwise, partly sunny, with a high near 60.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
Brentwood CA
 37.93°N 121.7°W (Elev. 75 ft)
12:26 am PST Jan 20, 2026
7am PST Jan 20, 2026-6pm PST Jan 26, 2026
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database