Strong Atmospheric River Bringing Heavy Rain to the Pacific Northwest; Areas of Snow in the North-Central and Eastern U.S.

A strong atmospheric river will bring prolonged heavy rainfall along with gusty winds to the Pacific Northwest through much of this week. The heavy rainfall may lead to widespread urban and river flooding. Accumulating snow is expected over parts of the central Appalachians and Mid-Atlantic today as well as the Upper Midwest and the Upper Great Lakes this evening into Tuesday. Read More >

Current conditions at

Concord, Buchanan Field (KCCR)

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

Clear

48°F

9°C

Humidity 81%
Wind Speed N 9 MPH
Barometer 30.31 in (1026.41 mb)
Dewpoint 43°F (6°C)
Visibility 7.00 mi
Wind Chill44°F (7°C)
Last update 08 Dec 03:35 PM PST
Extended Forecast for

3 Miles E Hercules CA

  • Tonight

    Tonight: Patchy fog after 7pm.  Otherwise, increasing clouds, with a low around 42. Calm wind.

    Low: 42 °F

    Patchy Fog

  • Tuesday

    Tuesday: Mostly cloudy, then gradually becoming sunny, with a high near 51. East northeast wind around 6 mph.

    High: 51 °F

    Decreasing
    Clouds

  • Tuesday Night

    Tuesday Night: Patchy fog.  Otherwise, partly cloudy, with a low around 44. Calm wind.

    Low: 44 °F

    Patchy Fog

  • Wednesday

    Wednesday: Mostly sunny, with a high near 61. Northeast wind around 6 mph.

    High: 61 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Patchy fog.  Otherwise, mostly clear, with a low around 44. Calm wind.

    Low: 44 °F

    Patchy Fog

  • Thursday

    Thursday: Mostly sunny, with a high near 60.

    High: 60 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Patchy fog between midnight and 1am.  Otherwise, mostly clear, with a low around 44.

    Low: 44 °F

    Mostly Clear
    then Patchy
    Fog

  • Friday

    Friday: Mostly sunny, with a high near 60.

    High: 60 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Patchy fog between 10pm and 1am.  Otherwise, mostly clear, with a low around 43.

    Low: 43 °F

    Patchy Fog

Detailed Forecast

Tonight
Patchy fog after 7pm. Otherwise, increasing clouds, with a low around 42. Calm wind.
Tuesday
Mostly cloudy, then gradually becoming sunny, with a high near 51. East northeast wind around 6 mph.
Tuesday Night
Patchy fog. Otherwise, partly cloudy, with a low around 44. Calm wind.
Wednesday
Mostly sunny, with a high near 61. Northeast wind around 6 mph.
Wednesday Night
Patchy fog. Otherwise, mostly clear, with a low around 44. Calm wind.
Thursday
Mostly sunny, with a high near 60.
Thursday Night
Patchy fog between midnight and 1am. Otherwise, mostly clear, with a low around 44.
Friday
Mostly sunny, with a high near 60.
Friday Night
Patchy fog between 10pm and 1am. Otherwise, mostly clear, with a low around 43.
Saturday
Mostly sunny, with a high near 60.
Saturday Night
Patchy fog. Otherwise, partly cloudy, with a low around 45.
Sunday
Partly sunny, with a high near 59.
Sunday Night
A slight chance of rain. Patchy fog. Otherwise, mostly cloudy, with a low around 48.
Monday
A chance of rain. Mostly cloudy, with a high near 60.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles E Hercules CA
 38.01°N 122.21°W (Elev. 384 ft)
12:26 pm PST Dec 8, 2025
3pm PST Dec 8, 2025-6pm PST Dec 15, 2025
 
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Additional Resources

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