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 >

Hazardous Weather Conditions

Current conditions at

Port Chicago (PCOC1)

Lat: 38.056°NLon: 122.0395°WElev: 0.0ft.

NA

53°F

12°C

Humidity NA
Wind Speed SSE 7 MPH
Barometer 29.88 in (1011.85 mb)
Dewpoint N/A
Visibility NA
Last update NA
Extended Forecast for

5 Miles NW Concord CA

Flood Watch December 26, 07:26am until December 26, 10:00pm
Click here for hazard details and duration
Flood Watch
  •  
    Flood Watch December 26, 07:26am until December 26, 10:00pm

    NOW until 10:00pm Fri

    Flood Watch

  • Today

    High: 56 °F

    Chance
    Showers

  • Tonight

    Tonight: A 10 percent chance of showers before 7pm. Partly cloudy, with a low around 44. Southwest wind around 7 mph.

    Low: 44 °F

    Slight Chance
    Showers then
    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 51. West northwest wind 5 to 7 mph becoming north in the afternoon.

    High: 51 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Increasing clouds, with a low around 39. Northwest wind 3 to 5 mph.

    Low: 39 °F

    Increasing
    Clouds

  • Sunday

    Sunday: Mostly sunny, with a high near 49. Northeast wind around 7 mph.

    High: 49 °F

    Mostly Sunny

  • Sunday Night

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

    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 36.

    Low: 36 °F

    Mostly Clear

Detailed Forecast

Today
A chance of showers between 10am and 5pm. Partly sunny, with a high near 56. South southwest wind 10 to 15 mph, with gusts as high as 26 mph. Chance of precipitation is 50%. New precipitation amounts between a tenth and quarter of an inch possible.
Tonight
A 10 percent chance of showers before 7pm. Partly cloudy, with a low around 44. Southwest wind around 7 mph.
Saturday
Mostly sunny, with a high near 51. West northwest wind 5 to 7 mph becoming north in the afternoon.
Saturday Night
Increasing clouds, with a low around 39. Northwest wind 3 to 5 mph.
Sunday
Mostly sunny, with a high near 49. Northeast wind around 7 mph.
Sunday Night
Mostly clear, with a low around 38.
Monday
Sunny, with a high near 51.
Monday Night
Mostly clear, with a low around 36.
Tuesday
Mostly sunny, with a high near 51.
Tuesday Night
Mostly clear, with a low around 38.
Wednesday
Mostly sunny, with a high near 50.
Wednesday Night
A slight chance of showers. Mostly cloudy, with a low around 41.
New Year's Day
A chance of showers. Cloudy, with a high near 50.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
5 Miles NW Concord CA
 38.04°N 122.05°W (Elev. 3 ft)
Last Update:
3:07 am PST Dec 26, 2025
Forecast Valid:
7am PST Dec 26, 2025-6pm PST Jan 1, 2026
 
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