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

Heavy Rain and Mountain Snow Lingers in California; Winter Storm Impacting the Great Lakes and Northeast U.S.

An atmospheric river will wind down through today across California with lingering heavy rainfall, heavy mountain snow, and gusty winds. A wintry mix of freezing rain, sleet, and snow will cause hazardous travel conditions for the Great Lakes into the northern Mid-Atlantic and southern New England today through Saturday morning. Areas of tree damage and power outages are possible. Read More >

Current conditions at

Berkeley Lab (LBNL1)

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

NA

47°F

8°C

Humidity 89%
Wind Speed W 4 MPH
Barometer NA
Dewpoint 44°F (7°C)
Visibility NA
Wind Chill45°F (7°C)
Last update 27 Dec 01:45 AM PST
Extended Forecast for

2 Miles N Hercules CA

  • Overnight

    Overnight: A 20 percent chance of rain. Partly cloudy, with a low around 46. West northwest wind around 8 mph.

    Low: 46 °F

    Slight Chance
    Rain

  • Saturday

    Saturday: Mostly sunny, with a high near 51. Northwest wind around 6 mph becoming north northeast in the afternoon.

    High: 51 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Increasing clouds, with a low around 40. Northwest wind 3 to 5 mph.

    Low: 40 °F

    Increasing
    Clouds

  • Sunday

    Sunday: Mostly cloudy through mid morning, then gradual clearing, with a high near 50. Northeast wind 5 to 7 mph.

    High: 50 °F

    Becoming
    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 38. Northeast wind around 7 mph.

    Low: 38 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 51.

    High: 51 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 38.

    Low: 38 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 51.

    High: 51 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 40.

    Low: 40 °F

    Mostly Clear

Detailed Forecast

Overnight
A 20 percent chance of rain. Partly cloudy, with a low around 46. West northwest wind around 8 mph.
Saturday
Mostly sunny, with a high near 51. Northwest wind around 6 mph becoming north northeast in the afternoon.
Saturday Night
Increasing clouds, with a low around 40. Northwest wind 3 to 5 mph.
Sunday
Mostly cloudy through mid morning, then gradual clearing, with a high near 50. Northeast wind 5 to 7 mph.
Sunday Night
Mostly clear, with a low around 38. Northeast wind around 7 mph.
Monday
Sunny, with a high near 51.
Monday Night
Mostly clear, with a low around 38.
Tuesday
Mostly sunny, with a high near 51.
Tuesday Night
Mostly clear, with a low around 40.
Wednesday
Mostly sunny, with a high near 50.
Wednesday Night
A slight chance of rain. Mostly cloudy, with a low around 42.
New Year's Day
A chance of rain. Cloudy, with a high near 50.
Thursday Night
Rain likely. Mostly cloudy, with a low around 45.
Friday
A chance of rain. Partly sunny, with a high near 52.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles N Hercules CA
 38.05°N 122.25°W (Elev. 56 ft)
Last Update:
12:27 am PST Dec 27, 2025
Forecast Valid:
2am PST Dec 27, 2025-6pm PST Jan 2, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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