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

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

Multiple clipper systems will bring cold temperatures and enhance lake-effect snow downwind of the Great Lakes. An arctic blast will bring frigid temperatures accompanied with gusty winds that may lead to dangerous wind chills beginning in the Northern Plains Thursday before expanding to the South and East. An expansive winter storm will start Friday in the Southern Rockies/Plains and Mid-South. Read More >

Current conditions at

BLACK DIAMOND (PIBC1)

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

NA

52°F

11°C

Humidity 45%
Wind Speed NNE 7 MPH
Barometer NA
Dewpoint 31°F (-1°C)
Visibility NA
Last update 21 Jan 07:28 AM PST
Extended Forecast for

3 Miles NE Brentwood CA

  • Today

    Today: Widespread dense fog, mainly before 9am. Otherwise, cloudy, with a high near 54. Light north northeast wind.

    High: 54 °F

    Dense Fog

  • Tonight

    Tonight: Widespread dense fog before 1am, then widespread dense fog after 2am. Otherwise, cloudy, with a low around 46. Calm wind.

    Low: 46 °F

    Dense Fog

  • Thursday

    Thursday: Widespread dense fog, mainly before 7am. Otherwise, partly sunny, with a high near 62. Calm wind becoming west around 5 mph in the afternoon.

    High: 62 °F

    Dense Fog
    then Partly
    Sunny

  • Thursday Night

    Thursday Night: Patchy fog after 4am. Otherwise, partly cloudy, with a low around 45. Light southwest wind.

    Low: 45 °F

    Partly Cloudy
    then Patchy
    Fog

  • Friday

    Friday: Patchy fog before 10am. Otherwise, partly sunny, with a high near 58. Calm wind becoming north northwest around 5 mph in the afternoon.

    High: 58 °F

    Patchy Fog
    then Mostly
    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 42.

    Low: 42 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 59.

    High: 59 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 38.

    Low: 38 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly cloudy, with a high near 56.

    High: 56 °F

    Mostly Cloudy

Detailed Forecast

Today
Widespread dense fog, mainly before 9am. Otherwise, cloudy, with a high near 54. Light north northeast wind.
Tonight
Widespread dense fog before 1am, then widespread dense fog after 2am. Otherwise, cloudy, with a low around 46. Calm wind.
Thursday
Widespread dense fog, mainly before 7am. Otherwise, partly sunny, with a high near 62. Calm wind becoming west around 5 mph in the afternoon.
Thursday Night
Patchy fog after 4am. Otherwise, partly cloudy, with a low around 45. Light southwest wind.
Friday
Patchy fog before 10am. Otherwise, partly sunny, with a high near 58. Calm wind becoming north northwest around 5 mph in the afternoon.
Friday Night
Partly cloudy, with a low around 42.
Saturday
Sunny, with a high near 59.
Saturday Night
Partly cloudy, with a low around 38.
Sunday
Mostly cloudy, with a high near 56.
Sunday Night
Mostly cloudy, with a low around 40.
Monday
Partly sunny, with a high near 58.
Monday Night
Mostly cloudy, with a low around 39.
Tuesday
Mostly cloudy, with a high near 58.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NE Brentwood CA
 37.96°N 121.65°W (Elev. 20 ft)
Last Update:
2:13 am PST Jan 21, 2026
Forecast Valid:
8am PST Jan 21, 2026-6pm PST Jan 27, 2026
 
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