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

Concord, Buchanan Field (KCCR)

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

Mostly Cloudy

59°F

15°C

Humidity 59%
Wind Speed S 14 MPH
Barometer 29.9 in (1012.53 mb)
Dewpoint 45°F (7°C)
Visibility 10.00 mi
Last update 26 Dec 12:53 PM PST
Extended Forecast for

2 Miles NNE Walnut Creek CA

Flood Watch December 26, 01:03pm until December 26, 10:00pm
Click here for hazard details and duration
Flood Watch
  •  
    Flood Watch December 26, 01:03pm until December 26, 10:00pm

    NOW until 10:00pm Fri

    Flood Watch

  • This Afternoon

    High: 56 °F

    Chance
    Showers

  • Tonight

    Tonight: A 10 percent chance of showers before 7pm. Partly cloudy, with a low around 44. South southwest wind around 6 mph.

    Low: 44 °F

    Slight Chance
    Showers then
    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 52. Light and variable wind becoming north around 6 mph in the morning.

    High: 52 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Increasing clouds, with a low around 38. Calm wind.

    Low: 38 °F

    Increasing
    Clouds

  • Sunday

    Sunday: Mostly sunny, with a high near 51. Northeast wind 3 to 6 mph.

    High: 51 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 37.

    Low: 37 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 53.

    High: 53 °F

    Sunny

  • Monday Night

    Monday Night: Patchy frost after 5am. Otherwise, mostly clear, with a low around 35.

    Low: 35 °F

    Mostly Clear
    then Patchy
    Frost

Detailed Forecast

This Afternoon
A 50 percent chance of showers before 5pm. Mostly cloudy, with a high near 56. South southwest wind 9 to 11 mph, with gusts as high as 23 mph. New precipitation amounts of less than a tenth of an inch possible.
Tonight
A 10 percent chance of showers before 7pm. Partly cloudy, with a low around 44. South southwest wind around 6 mph.
Saturday
Mostly sunny, with a high near 52. Light and variable wind becoming north around 6 mph in the morning.
Saturday Night
Increasing clouds, with a low around 38. Calm wind.
Sunday
Mostly sunny, with a high near 51. Northeast wind 3 to 6 mph.
Sunday Night
Mostly clear, with a low around 37.
Monday
Sunny, with a high near 53.
Monday Night
Patchy frost after 5am. Otherwise, mostly clear, with a low around 35.
Tuesday
Patchy frost before 8am. Otherwise, mostly sunny, with a high near 53.
Tuesday Night
Mostly clear, with a low around 36.
Wednesday
Mostly sunny, with a high near 52.
Wednesday Night
A slight chance of showers. Mostly cloudy, with a low around 40.
New Year's Day
A chance of showers. Cloudy, with a high near 53.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles NNE Walnut Creek CA
 37.92°N 122.05°W (Elev. 197 ft)
Last Update:
12:27 pm PST Dec 26, 2025
Forecast Valid:
1pm PST Dec 26, 2025-6pm PST Jan 1, 2026
 
Forecast Discussion
 
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Additional Resources

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National Digital Forecast Database

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High Temperature

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Chance of Precipitation