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

Lake Effect Snow through Saturday: A Series of Storms Impact the West

Lake effect snow showers will continue through Saturday downwind of Lakes Erie, Ontario and the eastern portion of Lake Superior. A series of storm systems will continue to impact California and the Pacific Northwest through the weekend and into next week, bringing widespread rainfall, mountain snowfall, and gusty winds. Coastal flooding is expected in northern California. Read More >

Current conditions at

BLACK DIAMOND (PIBC1)

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

NA

53°F

12°C

Humidity 89%
Wind Speed NNE 10 MPH
Barometer NA
Dewpoint 50°F (10°C)
Visibility NA
Last update 01 Jan 05:28 PM PST
Extended Forecast for

Brentwood CA

  • New Year's Day

    New Year's Day: A 20 percent chance of rain. Mostly cloudy, with a steady temperature around 57. South wind around 9 mph, with gusts as high as 20 mph.

    High: 57 °F

    Slight Chance
    Rain

  • Tonight

    Tonight: A 30 percent chance of rain, mainly before 11pm. Mostly cloudy, with a low around 47. Southeast wind 5 to 7 mph.

    Low: 47 °F

    Chance Rain
    then Mostly
    Cloudy

  • Friday

    Friday: Rain likely after 4pm. Mostly cloudy, with a high near 58. Southeast wind 7 to 16 mph, with gusts as high as 22 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    High: 58 °F

    Partly Sunny
    then Rain
    Likely

  • Friday Night

    Friday Night: Rain. Low around 54. Southeast wind 18 to 21 mph, with gusts as high as 34 mph. Chance of precipitation is 100%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 54 °F

    Rain

  • Saturday

    Saturday: Rain before 1pm, then showers and possibly a thunderstorm after 1pm. High near 60. South wind 11 to 14 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 60 °F

    Showers

  • Saturday Night

    Saturday Night: Showers and possibly a thunderstorm before 7pm, then rain after 7pm. Low around 53. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 53 °F

    Showers

  • Sunday

    Sunday: Rain. High near 55. Chance of precipitation is 100%.

    High: 55 °F

    Rain

  • Sunday Night

    Sunday Night: Rain. Mostly cloudy, with a low around 48.

    Low: 48 °F

    Rain

  • Monday

    Monday: Rain likely. Cloudy, with a high near 53.

    High: 53 °F

    Rain Likely

Detailed Forecast

New Year's Day
A 20 percent chance of rain. Mostly cloudy, with a steady temperature around 57. South wind around 9 mph, with gusts as high as 20 mph.
Tonight
A 30 percent chance of rain, mainly before 11pm. Mostly cloudy, with a low around 47. Southeast wind 5 to 7 mph.
Friday
Rain likely after 4pm. Mostly cloudy, with a high near 58. Southeast wind 7 to 16 mph, with gusts as high as 22 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Friday Night
Rain. Low around 54. Southeast wind 18 to 21 mph, with gusts as high as 34 mph. Chance of precipitation is 100%. New precipitation amounts between a tenth and quarter of an inch possible.
Saturday
Rain before 1pm, then showers and possibly a thunderstorm after 1pm. High near 60. South wind 11 to 14 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday Night
Showers and possibly a thunderstorm before 7pm, then rain after 7pm. Low around 53. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday
Rain. High near 55. Chance of precipitation is 100%.
Sunday Night
Rain. Mostly cloudy, with a low around 48.
Monday
Rain likely. Cloudy, with a high near 53.
Monday Night
A chance of rain, mainly before 4am. Mostly cloudy, with a low around 45.
Tuesday
A slight chance of rain. Mostly cloudy, with a high near 53.
Tuesday Night
Mostly cloudy, with a low around 43.
Wednesday
A slight chance of rain. Partly sunny, with a high near 52.
Wednesday Night
A chance of rain. Mostly cloudy, with a low around 41.
Thursday
A slight chance of rain. Mostly sunny, with a high near 50.
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ABOUT THIS FORECAST

 
Point Forecast:
Brentwood CA
 37.93°N 121.7°W (Elev. 75 ft)
Last Update:
12:32 pm PST Jan 1, 2026
Forecast Valid:
5pm PST Jan 1, 2026-6pm PST Jan 8, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation