Heavy Lake Effect Snow Downwind of Lakes Erie and Ontario; Fire Weather Concerns in the Southern Plains and Southeast

A multi-day heavy lake effect snow event is expected downwind of Lakes Erie and Ontario through New Year's Day. There is increasing confidence in snow squalls causing bursts of snow & gusty winds on New Year's Eve. Elevated fire weather conditions will continue today over parts of the Southern Plains and across much of the Southeast U.S. Read More >

Current conditions at

Concord, Buchanan Field (KCCR)

Lat: 37.99167°NLon: 122.05194°WElev: 23.0ft.

Mist

43°F

6°C

Humidity 93%
Wind Speed NE 5 MPH
Barometer 30.25 in (1024.38 mb)
Dewpoint 41°F (5°C)
Visibility 2.00 mi
Wind Chill40°F (4°C)
Last update 30 Dec 08:00 AM PST
Extended Forecast for

3 Miles N Hercules CA

Cold Weather Advisory until December 30, 09:00am
Dense Fog Advisory December 30, 08:27am until December 30, 10:00am
Click here for hazard details and duration
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  •  
    Cold Weather Advisory until December 30, 09:00am
    Dense Fog Advisory December 30, 08:27am until December 30, 10:00am

    NOW: Multiple hazards in effect

    Click HERE for Details

  • Today

    High: 50 °F

    Mostly Cloudy

  • Tonight

    Tonight: A 10 percent chance of rain after 4am.  Cloudy, with a low around 46. East wind 11 to 15 mph, with gusts as high as 21 mph.

    Low: 46 °F

    Cloudy then
    Slight Chance
    Rain

  • Wednesday

    Wednesday: Rain, mainly after 10am.  High near 50. East northeast wind 7 to 14 mph, with gusts as high as 18 mph.  Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 50 °F

    Rain

  • Wednesday Night

    Wednesday Night: Rain.  Low around 48. East northeast wind 11 to 13 mph.  Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 48 °F

    Rain

  • New Year's Day

    New Year's Day: Rain.  Patchy fog. High near 55. East wind around 7 mph becoming south southeast in the afternoon.  Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 55 °F

    Rain and
    Patchy Fog

  • Thursday Night

    Thursday Night: Rain before 4am, then showers likely and possibly a thunderstorm after 4am.  Patchy fog before 1am. Low around 54. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 54 °F

    Showers and
    Patchy Fog

  • Friday

    Friday: Showers likely and possibly a thunderstorm, then rain after 10am.  High near 57. Chance of precipitation is 80%.

    High: 57 °F

    Showers

  • Friday Night

    Friday Night: Rain.  Cloudy, with a low around 49.

    Low: 49 °F

    Rain

Detailed Forecast

Today
Mostly cloudy, with a high near 50. East wind 14 to 17 mph, with gusts as high as 22 mph.
Tonight
A 10 percent chance of rain after 4am. Cloudy, with a low around 46. East wind 11 to 15 mph, with gusts as high as 21 mph.
Wednesday
Rain, mainly after 10am. High near 50. East northeast wind 7 to 14 mph, with gusts as high as 18 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Wednesday Night
Rain. Low around 48. East northeast wind 11 to 13 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
New Year's Day
Rain. Patchy fog. High near 55. East wind around 7 mph becoming south southeast in the afternoon. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Thursday Night
Rain before 4am, then showers likely and possibly a thunderstorm after 4am. Patchy fog before 1am. Low around 54. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday
Showers likely and possibly a thunderstorm, then rain after 10am. High near 57. Chance of precipitation is 80%.
Friday Night
Rain. Cloudy, with a low around 49.
Saturday
Rain likely. Mostly cloudy, with a high near 53.
Saturday Night
Rain likely, mainly before 10pm. Patchy fog. Otherwise, mostly cloudy, with a low around 46.
Sunday
A chance of rain. Patchy fog. Otherwise, mostly cloudy, with a high near 53.
Sunday Night
Rain likely. Patchy fog. Otherwise, mostly cloudy, with a low around 46.
Monday
Rain likely. Mostly cloudy, with a high near 53.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles N Hercules CA
 38.05°N 122.25°W (Elev. 56 ft)
12:27 am PST Dec 30, 2025
8am PST Dec 30, 2025-6pm PST Jan 5, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

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