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

Prolonged Atmospheric River Will Impact the Northwest Early this Week

A weather system in the Pacific Northwest will produce rain throughout the day, before a potent atmospheric river produces a prolonged round of heavy rainfall, widespread urban and river flooding, and high elevation snow to the region Monday through Wednesday. Showers and thunderstorms may produce isolated damaging winds, a brief tornado, and locally heavy rainfall across parts of Florida today. Read More >

Current conditions at

Concord, Buchanan Field (KCCR)

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

Mist

47°F

8°C

Humidity 89%
Wind Speed N 5 MPH
Barometer 30.28 in (1025.4 mb)
Dewpoint 44°F (7°C)
Visibility 2.00 mi
Wind Chill45°F (7°C)
Last update 07 Dec 02:53 PM PST
Extended Forecast for

2 Miles NE Walnut Creek CA

  • Tonight

    Tonight: Widespread dense fog after 10pm. Otherwise, partly cloudy, with a low around 40. Calm wind.

    Low: 40 °F

    Dense Fog

  • Monday

    Monday: Widespread dense fog, mainly before 9am. Otherwise, sunny, with a high near 57. Light north wind.

    High: 57 °F

    Dense Fog
    then Sunny

  • Monday Night

    Monday Night: Patchy fog after 1am. Otherwise, partly cloudy, with a low around 42. Calm wind.

    Low: 42 °F

    Mostly Clear
    then Patchy
    Fog

  • Tuesday

    Tuesday: Patchy fog before 9am. Otherwise, mostly sunny, with a high near 62. Light north wind.

    High: 62 °F

    Patchy Fog
    then Mostly
    Sunny

  • Tuesday Night

    Tuesday Night: Patchy fog after 3am. Otherwise, partly cloudy, with a low around 43. Calm wind.

    Low: 43 °F

    Partly Cloudy
    then Patchy
    Fog

  • Wednesday

    Wednesday: Patchy fog before 8am. Otherwise, mostly sunny, with a high near 65.

    High: 65 °F

    Patchy Fog
    then Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 44.

    Low: 44 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 64.

    High: 64 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 43.

    Low: 43 °F

    Mostly Clear

Detailed Forecast

Tonight
Widespread dense fog after 10pm. Otherwise, partly cloudy, with a low around 40. Calm wind.
Monday
Widespread dense fog, mainly before 9am. Otherwise, sunny, with a high near 57. Light north wind.
Monday Night
Patchy fog after 1am. Otherwise, partly cloudy, with a low around 42. Calm wind.
Tuesday
Patchy fog before 9am. Otherwise, mostly sunny, with a high near 62. Light north wind.
Tuesday Night
Patchy fog after 3am. Otherwise, partly cloudy, with a low around 43. Calm wind.
Wednesday
Patchy fog before 8am. Otherwise, mostly sunny, with a high near 65.
Wednesday Night
Mostly clear, with a low around 44.
Thursday
Mostly sunny, with a high near 64.
Thursday Night
Mostly clear, with a low around 43.
Friday
Mostly sunny, with a high near 63.
Friday Night
Mostly clear, with a low around 43.
Saturday
Mostly sunny, with a high near 63.
Saturday Night
Partly cloudy, with a low around 44.
Sunday
Partly sunny, with a high near 62.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles NE Walnut Creek CA
 37.92°N 122.05°W (Elev. 197 ft)
Last Update:
12:41 pm PST Dec 7, 2025
Forecast Valid:
3pm PST Dec 7, 2025-6pm PST Dec 14, 2025
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation