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

Storm Brings Rain and Snow to the Southwest U.S. this weekend; Heavy Snow and Rain for Alaska

A storm will pass through the southwestern U.S. this weekend with widespread rain and mountain snow. Rainfall will be mostly beneficial but poses a risk for dangerous debris flows over recent burn scars. A significant winter storm will impact Alaska through the weekend with heavy snow across western Alaska and heavy rainfall across Southcentral with strong winds and marine/coastal impacts. Read More >

Hazardous Weather Conditions

Current conditions at

Berkeley Lab (LBNL1)

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

NA

47°F

8°C

Humidity 84%
Wind Speed SSE 6 MPH
Barometer NA
Dewpoint 43°F (6°C)
Visibility NA
Wind Chill44°F (7°C)
Last update 25 Jan 02:15 AM PST
Extended Forecast for

Hercules CA

Freeze Watch January 26, 01:00am until January 28, 09:00am
Frost Advisory January 25, 02:36am until January 25, 09:00am
Click here for hazard details and duration
Freeze Watch
Frost Advisory
  •  
    Frost Advisory January 25, 02:36am until January 25, 09:00am

    NOW until 9:00am Sat

    Frost Advisory

  • Overnight

    Low: 41 °F

    Partly Cloudy

  • Saturday

    Saturday: Rain likely, mainly after 4pm. Increasing clouds, with a high near 54. East northeast wind 7 to 14 mph. Chance of precipitation is 60%.

    High: 54 °F

    Chance Rain
    then Rain
    Likely

  • Saturday Night

    Saturday Night: Rain likely, mainly before 10pm. Mostly cloudy, with a low around 41. East northeast wind 7 to 14 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 41 °F

    Rain Likely
    then Chance
    Rain

  • Sunday

    Sunday: A 20 percent chance of rain. Mostly sunny, with a high near 56. East northeast wind 13 to 16 mph, with gusts as high as 21 mph.

    High: 56 °F

    Slight Chance
    Rain

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 39. East northeast wind 7 to 13 mph.

    Low: 39 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 58.

    High: 58 °F

    Sunny

  • Monday Night

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

    Low: 40 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 57.

    High: 57 °F

    Sunny

Detailed Forecast

Overnight
Partly cloudy, with a low around 41. Southeast wind 5 to 7 mph.
Saturday
Rain likely, mainly after 4pm. Increasing clouds, with a high near 54. East northeast wind 7 to 14 mph. Chance of precipitation is 60%.
Saturday Night
Rain likely, mainly before 10pm. Mostly cloudy, with a low around 41. East northeast wind 7 to 14 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Sunday
A 20 percent chance of rain. Mostly sunny, with a high near 56. East northeast wind 13 to 16 mph, with gusts as high as 21 mph.
Sunday Night
Mostly clear, with a low around 39. East northeast wind 7 to 13 mph.
Monday
Sunny, with a high near 58.
Monday Night
Mostly clear, with a low around 40.
Tuesday
Sunny, with a high near 57.
Tuesday Night
Mostly clear, with a low around 41.
Wednesday
Patchy fog before 7am. Otherwise, mostly sunny, with a high near 58.
Wednesday Night
Mostly clear, with a low around 41.
Thursday
Partly sunny, with a high near 57.
Thursday Night
A chance of rain. Mostly cloudy, with a low around 46.
Friday
A chance of rain. Mostly cloudy, with a high near 57.
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:
12:26 am PST Jan 25, 2025
Forecast Valid:
2am PST Jan 25, 2025-6pm PST Jan 31, 2025
 
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