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

Frigid Airmass to Bring Significantly Colder Temperatures; Snow Continues Downwind of the Great Lakes

A frigid cold airmass will bring significantly colder weather across the eastern two thirds of the country early this week. Record low temperatures are expected in the Southeast by Tuesday morning. Moderate to heavy lake effect snow will continue downwind of the Great Lakes through Monday. Several inches of snow accumulation is expected, including in portions of the Chicago Metro Read More >

Current conditions at

Berkeley Lab (LBNL1)

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

NA

67°F

19°C

Humidity 53%
Wind Speed W 0 MPH
Barometer NA
Dewpoint 49°F (9°C)
Visibility NA
Last update 10 Nov 03:30 AM PST
Extended Forecast for

Hercules CA

  • Overnight

    Overnight: Partly cloudy, with a low around 56. East wind around 9 mph.

    Low: 56 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 77. East northeast wind 7 to 11 mph.

    High: 77 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 56. East wind around 8 mph.

    Low: 56 °F

    Partly Cloudy

  • Veterans Day

    Veterans Day: Mostly cloudy, with a high near 73. East wind 6 to 10 mph becoming south in the afternoon.

    High: 73 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 55. Southwest wind 6 to 11 mph.

    Low: 55 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Rain, mainly after 4pm. High near 65. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

    High: 65 °F

    Chance Rain
    then Rain

  • Wednesday Night

    Wednesday Night: Rain. Low around 52. Breezy. Chance of precipitation is 100%.

    Low: 52 °F

    Rain and
    Breezy

  • Thursday

    Thursday: Rain likely. Mostly cloudy, with a high near 58.

    High: 58 °F

    Rain Likely

  • Thursday Night

    Thursday Night: A chance of rain. Mostly cloudy, with a low around 48.

    Low: 48 °F

    Chance Rain

Detailed Forecast

Overnight
Partly cloudy, with a low around 56. East wind around 9 mph.
Monday
Mostly sunny, with a high near 77. East northeast wind 7 to 11 mph.
Monday Night
Partly cloudy, with a low around 56. East wind around 8 mph.
Veterans Day
Mostly cloudy, with a high near 73. East wind 6 to 10 mph becoming south in the afternoon.
Tuesday Night
Mostly cloudy, with a low around 55. Southwest wind 6 to 11 mph.
Wednesday
Rain, mainly after 4pm. High near 65. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday Night
Rain. Low around 52. Breezy. Chance of precipitation is 100%.
Thursday
Rain likely. Mostly cloudy, with a high near 58.
Thursday Night
A chance of rain. Mostly cloudy, with a low around 48.
Friday
A chance of rain, mainly before 4pm. Partly sunny, with a high near 56.
Friday Night
A slight chance of rain. Partly cloudy, with a low around 48.
Saturday
Mostly sunny, with a high near 60.
Saturday Night
A slight chance of rain. Partly cloudy, with a low around 49.
Sunday
A chance of rain. Partly sunny, with a high near 60.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Hercules CA
 38°N 122.27°W (Elev. 377 ft)
Last Update:
1:27 am PST Nov 10, 2025
Forecast Valid:
3am PST Nov 10, 2025-6pm PST Nov 16, 2025
 
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Additional Resources

Radar & Satellite Image

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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