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

BLACK DIAMOND (PIBC1)

Lat: 37.95°NLon: 121.88444°WElev: 1600.0ft.

NA

41°F

5°C

Humidity 85%
Wind Speed N 2 MPH
Barometer NA
Dewpoint 37°F (3°C)
Visibility NA
Last update 07 Dec 07:28 PM PST
Extended Forecast for

2 Miles ESE Antioch CA

  • Tonight

    Tonight: Areas of dense fog. Otherwise, mostly cloudy, with a low around 42. Calm wind.

    Low: 42 °F

    Areas Dense
    Fog

  • Monday

    Monday: Widespread dense fog, mainly before 11am. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 46. Light east wind.

    High: 46 °F

    Dense Fog
    then Sunny

  • Monday Night

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

    Low: 42 °F

    Patchy Fog

  • Tuesday

    Tuesday: Areas of fog before noon. Otherwise, partly sunny, with a high near 57. Light north wind.

    High: 57 °F

    Areas Fog
    then Mostly
    Sunny

  • Tuesday Night

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

    Low: 44 °F

    Patchy Fog

  • Wednesday

    Wednesday: Areas of fog before noon. Otherwise, mostly sunny, with a high near 60.

    High: 60 °F

    Areas Fog
    then Mostly
    Sunny

  • Wednesday Night

    Wednesday Night: Patchy fog after 1am. Otherwise, partly cloudy, with a low around 45.

    Low: 45 °F

    Mostly Clear
    then Patchy
    Fog

  • Thursday

    Thursday: Areas of fog before noon. Otherwise, mostly sunny, with a high near 60.

    High: 60 °F

    Areas Fog
    then Mostly
    Sunny

  • Thursday Night

    Thursday Night: Patchy fog after 2am. Otherwise, partly cloudy, with a low around 44.

    Low: 44 °F

    Mostly Clear
    then Patchy
    Fog

Detailed Forecast

Tonight
Areas of dense fog. Otherwise, mostly cloudy, with a low around 42. Calm wind.
Monday
Widespread dense fog, mainly before 11am. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 46. Light east wind.
Monday Night
Patchy fog. Otherwise, partly cloudy, with a low around 42. Calm wind.
Tuesday
Areas of fog before noon. Otherwise, partly sunny, with a high near 57. Light north wind.
Tuesday Night
Patchy fog. Otherwise, partly cloudy, with a low around 44. Calm wind.
Wednesday
Areas of fog before noon. Otherwise, mostly sunny, with a high near 60.
Wednesday Night
Patchy fog after 1am. Otherwise, partly cloudy, with a low around 45.
Thursday
Areas of fog before noon. Otherwise, mostly sunny, with a high near 60.
Thursday Night
Patchy fog after 2am. Otherwise, partly cloudy, with a low around 44.
Friday
Areas of fog before noon. Otherwise, mostly sunny, with a high near 59.
Friday Night
Patchy fog. Otherwise, partly cloudy, with a low around 44.
Saturday
Areas of fog. Otherwise, mostly sunny, with a high near 58.
Saturday Night
Patchy fog. Otherwise, partly cloudy, with a low around 44.
Sunday
Areas of fog. Otherwise, partly sunny, with a high near 58.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles ESE Antioch CA
 37.99°N 121.77°W (Elev. 200 ft)
Last Update:
6:20 pm PST Dec 7, 2025
Forecast Valid:
8pm PST Dec 7, 2025-6pm PST Dec 14, 2025
 
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Additional Resources

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National Digital Forecast Database

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Chance of Precipitation