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

52°F

11°C

Humidity 96%
Wind Speed NNE 4 MPH
Barometer NA
Dewpoint 51°F (11°C)
Visibility NA
Last update 02 Jan 01:28 AM PST
Extended Forecast for

Brentwood CA

  • Overnight

    Overnight: A 30 percent chance of rain. Mostly cloudy, with a steady temperature around 50. Southeast wind around 6 mph.

    Low: 50 °F

    Chance Rain

  • Friday

    Friday: Rain likely after 4pm. Mostly cloudy, with a high near 58. Southeast wind 5 to 13 mph, with gusts as high as 24 mph. Chance of precipitation is 60%.

    High: 58 °F

    Mostly Cloudy
    then Rain
    Likely

  • Friday Night

    Friday Night: Rain. Low around 54. Southeast wind 11 to 18 mph, with gusts as high as 34 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 54 °F

    Rain

  • Saturday

    Saturday: Rain. High near 60. South wind 10 to 14 mph, with gusts as high as 26 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 60 °F

    Rain

  • Saturday Night

    Saturday Night: Rain. Low around 52. South southeast wind around 9 mph, with gusts as high as 18 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 52 °F

    Rain

  • Sunday

    Sunday: Rain. High near 54. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    High: 54 °F

    Rain

  • Sunday Night

    Sunday Night: Rain likely. Mostly cloudy, with a low around 48. Chance of precipitation is 70%.

    Low: 48 °F

    Rain Likely

  • Monday

    Monday: Rain likely. Cloudy, with a high near 52.

    High: 52 °F

    Rain Likely

  • Monday Night

    Monday Night: A chance of rain. Mostly cloudy, with a low around 46.

    Low: 46 °F

    Chance Rain

Detailed Forecast

Overnight
A 30 percent chance of rain. Mostly cloudy, with a steady temperature around 50. Southeast wind around 6 mph.
Friday
Rain likely after 4pm. Mostly cloudy, with a high near 58. Southeast wind 5 to 13 mph, with gusts as high as 24 mph. Chance of precipitation is 60%.
Friday Night
Rain. Low around 54. Southeast wind 11 to 18 mph, with gusts as high as 34 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Saturday
Rain. High near 60. South wind 10 to 14 mph, with gusts as high as 26 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Saturday Night
Rain. Low around 52. South southeast wind around 9 mph, with gusts as high as 18 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Sunday
Rain. High near 54. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Sunday Night
Rain likely. Mostly cloudy, with a low around 48. Chance of precipitation is 70%.
Monday
Rain likely. Cloudy, with a high near 52.
Monday Night
A chance of rain. Mostly cloudy, with a low around 46.
Tuesday
Partly sunny, with a high near 54.
Tuesday Night
A chance of rain. Mostly cloudy, with a low around 43.
Wednesday
A chance of rain. Mostly cloudy, with a high near 53.
Wednesday Night
A chance of rain. Mostly cloudy, with a low around 39.
Thursday
A slight chance of rain. Mostly sunny, with a high near 50.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Brentwood CA
 37.93°N 121.7°W (Elev. 75 ft)
Last Update:
2:04 am PST Jan 2, 2026
Forecast Valid:
2am PST Jan 2, 2026-6pm PST Jan 8, 2026
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation