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

Heavy Snow in the Cascades and Northern Rockies; Wintry Mix in the Northeast; High Winds in Southern California

Two more cold fronts will pass through the Northwest U.S. this week with heavy mountain snow continuing across the Cascades, and northern Rockies. A quick moving storm system will bring mixed precipitation including some freezing rain across the Northeast U.S. today. High winds could blow down trees and power lines in the mountains of southern California this evening through Thursday. Read More >

Hazardous Weather Conditions

Current conditions at

Berkeley Lab (LBNL1)

Lat: 37.8771°NLon: 122.2486°WElev: 888.0ft.

NA

51°F

11°C

Humidity 76%
Wind Speed W 7 MPH
Barometer NA
Dewpoint 44°F (7°C)
Visibility NA
Last update 07 Jan 11:00 AM PST
Extended Forecast for

Hercules CA

Extreme Cold Watch January 9, 01:00am until January 9, 09:00am
Click here for hazard details and duration
Extreme Cold Watch

  • Today

    Today: Sunny, with a high near 56. West northwest wind around 10 mph.

    High: 56 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 43. West wind around 11 mph, with gusts as high as 22 mph.

    Low: 43 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 53. North northwest wind around 10 mph.

    High: 53 °F

    Sunny

  • Thursday Night

    Thursday Night: Increasing clouds, with a low around 40. North wind around 7 mph.

    Low: 40 °F

    Increasing
    Clouds

  • Friday

    Friday: Sunny, with a high near 50. East northeast wind 7 to 9 mph.

    High: 50 °F

    Sunny

  • Friday Night

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

    Low: 38 °F

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 52.

    High: 52 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 41.

    Low: 41 °F

    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 54.

    High: 54 °F

    Partly Sunny

Detailed Forecast

Today
Sunny, with a high near 56. West northwest wind around 10 mph.
Tonight
Mostly clear, with a low around 43. West wind around 11 mph, with gusts as high as 22 mph.
Thursday
Sunny, with a high near 53. North northwest wind around 10 mph.
Thursday Night
Increasing clouds, with a low around 40. North wind around 7 mph.
Friday
Sunny, with a high near 50. East northeast wind 7 to 9 mph.
Friday Night
Partly cloudy, with a low around 38.
Saturday
Partly sunny, with a high near 52.
Saturday Night
Mostly cloudy, with a low around 41.
Sunday
Partly sunny, with a high near 54.
Sunday Night
Partly cloudy, with a low around 41.
Monday
Sunny, with a high near 55.
Monday Night
Mostly clear, with a low around 42.
Tuesday
Sunny, with a high near 56.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Hercules CA
 38.02°N 122.27°W (Elev. 92 ft)
Last Update:
12:26 am PST Jan 7, 2026
Forecast Valid:
11am PST Jan 7, 2026-6pm PST Jan 13, 2026
 
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Additional Resources

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National Digital Forecast Database

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High Temperature

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Chance of Precipitation