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

Pacific Storm System Impacting the Western U.S.; Critical to Extremely Critical Fire Weather in the Central U.S.

A Pacific storm will move through the western U.S. today and Tuesday with areas of heavy mountain snow, gusty to high winds, and lower elevation rain. Ahead of this storm, gusty winds and dry conditions over the central and southern Plains will contribute to widespread critical to extremely critical fire weather through Tuesday. Read More >

Current conditions at

Berkeley Lab (LBNL1)

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

NA

48°F

9°C

Humidity 86%
Wind Speed E 16 MPH
Barometer NA
Dewpoint 44°F (7°C)
Visibility NA
Wind Chill42°F (6°C)
Last update 17 Mar 06:00 PM PDT
Extended Forecast for

Hercules CA

  • Tonight

    Tonight: A slight chance of showers and thunderstorms before 8pm, then a slight chance of showers between 8pm and 11pm. Mostly clear, with a low around 41. West northwest wind 10 to 15 mph, with gusts as high as 24 mph. Chance of precipitation is 20%.

    Low: 41 °F

    Slight Chance
    T-storms then
    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 59. Northwest wind 3 to 7 mph.

    High: 59 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 42. Southwest wind 3 to 8 mph.

    Low: 42 °F

    Mostly Clear

  • Wednesday

    Wednesday: Increasing clouds, with a high near 58. Calm wind becoming southwest 5 to 9 mph in the afternoon.

    High: 58 °F

    Increasing
    Clouds

  • Wednesday Night

    Wednesday Night: Rain, mainly before 11pm. Low around 46. South southwest wind 7 to 11 mph, with gusts as high as 18 mph. Chance of precipitation is 90%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 46 °F

    Rain then
    Chance Rain

  • Thursday

    Thursday: Mostly sunny, with a high near 61.

    High: 61 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 44.

    Low: 44 °F

    Partly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 62.

    High: 62 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 46.

    Low: 46 °F

    Mostly Cloudy

Detailed Forecast

Tonight
A slight chance of showers and thunderstorms before 8pm, then a slight chance of showers between 8pm and 11pm. Mostly clear, with a low around 41. West northwest wind 10 to 15 mph, with gusts as high as 24 mph. Chance of precipitation is 20%.
Tuesday
Sunny, with a high near 59. Northwest wind 3 to 7 mph.
Tuesday Night
Mostly clear, with a low around 42. Southwest wind 3 to 8 mph.
Wednesday
Increasing clouds, with a high near 58. Calm wind becoming southwest 5 to 9 mph in the afternoon.
Wednesday Night
Rain, mainly before 11pm. Low around 46. South southwest wind 7 to 11 mph, with gusts as high as 18 mph. Chance of precipitation is 90%. New precipitation amounts of less than a tenth of an inch possible.
Thursday
Mostly sunny, with a high near 61.
Thursday Night
Partly cloudy, with a low around 44.
Friday
Partly sunny, with a high near 62.
Friday Night
Mostly cloudy, with a low around 46.
Saturday
Partly sunny, with a high near 65.
Saturday Night
Partly cloudy, with a low around 48.
Sunday
Mostly sunny, with a high near 69.
Sunday Night
Mostly clear, with a low around 50.
Monday
Sunny, with a high near 75.
Click Map For Forecast
Disclaimer
Map Legend

ABOUT THIS FORECAST

 
Point Forecast:
Hercules CA
 38.02°N 122.27°W (Elev. 92 ft)
Last Update:
1:26 pm PDT Mar 17, 2025
Forecast Valid:
6pm PDT Mar 17, 2025-6pm PDT Mar 24, 2025
 
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