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

Dangerous Cold and Gusty Winds Anticipated This Weekend

A significant arctic outbreak will bring frigid temperatures and dangerously cold wind chills to the Northeast and Mid-Atlantic this weekend. Strong winds which could produce tree damage and power outages, and periods of snow squalls are also possible. Relief from this cold and a warming trend is forecast to commence by the beginning to middle of next week. Read More >

Current conditions at

Berkeley Lab (LBNL1)

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

NA

66°F

19°C

Humidity 49%
Wind Speed N 0 MPH
Barometer NA
Dewpoint 47°F (8°C)
Visibility NA
Last update 05 Feb 06:00 PM PST
Extended Forecast for

Hercules CA

  • Tonight

    Tonight: Mostly cloudy, with a low around 52. East wind around 5 mph becoming calm in the evening.

    Low: 52 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly cloudy, then gradually becoming sunny, with a high near 65. Light and variable wind becoming southwest around 6 mph in the afternoon.

    High: 65 °F

    Decreasing
    Clouds

  • Friday Night

    Friday Night: Patchy fog after 3am. Otherwise, partly cloudy, with a low around 49. West southwest wind around 6 mph.

    Low: 49 °F

    Partly Cloudy
    then Patchy
    Fog

  • Saturday

    Saturday: Patchy fog before 9am. Otherwise, mostly sunny, with a high near 63. West wind 3 to 6 mph.

    High: 63 °F

    Patchy Fog
    then Mostly
    Sunny

  • Saturday Night

    Saturday Night: Patchy fog after 1am. Otherwise, partly cloudy, with a low around 50. West southwest wind 5 to 7 mph.

    Low: 50 °F

    Partly Cloudy
    then Patchy
    Fog

  • Sunday

    Sunday: A 10 percent chance of rain after 4pm. Partly sunny, with a high near 64.

    High: 64 °F

    Partly Sunny
    then Slight
    Chance Rain

  • Sunday Night

    Sunday Night: A 20 percent chance of rain before 10pm. Patchy fog after 3am. Otherwise, mostly cloudy, with a low around 51.

    Low: 51 °F

    Slight Chance
    Rain then
    Patchy Fog

  • Monday

    Monday: Patchy fog before 7am. Otherwise, mostly cloudy, with a high near 61.

    High: 61 °F

    Patchy Fog
    then Mostly
    Cloudy

  • Monday Night

    Monday Night: A slight chance of rain. Mostly cloudy, with a low around 47.

    Low: 47 °F

    Slight Chance
    Rain

Detailed Forecast

Tonight
Mostly cloudy, with a low around 52. East wind around 5 mph becoming calm in the evening.
Friday
Mostly cloudy, then gradually becoming sunny, with a high near 65. Light and variable wind becoming southwest around 6 mph in the afternoon.
Friday Night
Patchy fog after 3am. Otherwise, partly cloudy, with a low around 49. West southwest wind around 6 mph.
Saturday
Patchy fog before 9am. Otherwise, mostly sunny, with a high near 63. West wind 3 to 6 mph.
Saturday Night
Patchy fog after 1am. Otherwise, partly cloudy, with a low around 50. West southwest wind 5 to 7 mph.
Sunday
A 10 percent chance of rain after 4pm. Partly sunny, with a high near 64.
Sunday Night
A 20 percent chance of rain before 10pm. Patchy fog after 3am. Otherwise, mostly cloudy, with a low around 51.
Monday
Patchy fog before 7am. Otherwise, mostly cloudy, with a high near 61.
Monday Night
A slight chance of rain. Mostly cloudy, with a low around 47.
Tuesday
A chance of rain, mainly after 10am. Partly sunny, with a high near 58.
Tuesday Night
A chance of rain. Mostly cloudy, with a low around 44.
Wednesday
A chance of rain. Partly sunny, with a high near 56.
Wednesday Night
A chance of rain. Partly cloudy, with a low around 44.
Thursday
A slight chance of rain. Mostly sunny, with a high near 60.
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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 pm PST Feb 5, 2026
Forecast Valid:
6pm PST Feb 5, 2026-6pm PST Feb 12, 2026
 
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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