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

BLACK DIAMOND (PIBC1)

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

NA

60°F

16°C

Humidity 46%
Wind Speed S 20 MPH
Barometer NA
Dewpoint 39°F (4°C)
Visibility NA
Last update 19 Oct 03:28 PM PDT
Extended Forecast for

4 Miles NNW Discovery Bay CA

  • Tonight

    Tonight: Mostly cloudy, with a low around 49. West wind 5 to 10 mph becoming light southwest in the evening.

    Low: 49 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Patchy fog before 8am. Otherwise, increasing clouds, with a high near 72. Calm wind becoming north around 5 mph in the afternoon.

    High: 72 °F

    Patchy Fog
    then Mostly
    Cloudy

  • Tuesday Night

    Tuesday Night: A slight chance of showers before 2am, then a slight chance of showers after 4am. Cloudy, with a low around 53. Light west wind. Chance of precipitation is 20%.

    Low: 53 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Wednesday

    Wednesday: A 40 percent chance of showers. Mostly cloudy, with a high near 72. West wind 3 to 6 mph. New precipitation amounts of less than a tenth of an inch possible.

    High: 72 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: A 30 percent chance of showers. Patchy fog after 1am. Otherwise, mostly cloudy, with a low around 52. West wind around 6 mph becoming calm in the evening. New precipitation amounts of less than a tenth of an inch possible.

    Low: 52 °F

    Chance
    Showers and
    Patchy Fog

  • Thursday

    Thursday: A 40 percent chance of showers. Patchy fog before 8am. Otherwise, partly sunny, with a high near 72. New precipitation amounts of less than a tenth of an inch possible.

    High: 72 °F

    Chance
    Showers and
    Patchy Fog

  • Thursday Night

    Thursday Night: Patchy fog after 5am. Otherwise, partly cloudy, with a low around 50.

    Low: 50 °F

    Partly Cloudy
    then Patchy
    Fog

  • Friday

    Friday: Patchy fog before 8am. Otherwise, sunny, with a high near 74.

    High: 74 °F

    Patchy Fog
    then Sunny

  • Friday Night

    Friday Night: Clear, with a low around 48.

    Low: 48 °F

    Clear

Detailed Forecast

Tonight
Mostly cloudy, with a low around 49. West wind 5 to 10 mph becoming light southwest in the evening.
Tuesday
Patchy fog before 8am. Otherwise, increasing clouds, with a high near 72. Calm wind becoming north around 5 mph in the afternoon.
Tuesday Night
A slight chance of showers before 2am, then a slight chance of showers after 4am. Cloudy, with a low around 53. Light west wind. Chance of precipitation is 20%.
Wednesday
A 40 percent chance of showers. Mostly cloudy, with a high near 72. West wind 3 to 6 mph. New precipitation amounts of less than a tenth of an inch possible.
Wednesday Night
A 30 percent chance of showers. Patchy fog after 1am. Otherwise, mostly cloudy, with a low around 52. West wind around 6 mph becoming calm in the evening. New precipitation amounts of less than a tenth of an inch possible.
Thursday
A 40 percent chance of showers. Patchy fog before 8am. Otherwise, partly sunny, with a high near 72. New precipitation amounts of less than a tenth of an inch possible.
Thursday Night
Patchy fog after 5am. Otherwise, partly cloudy, with a low around 50.
Friday
Patchy fog before 8am. Otherwise, sunny, with a high near 74.
Friday Night
Clear, with a low around 48.
Saturday
Sunny, with a high near 74.
Saturday Night
Mostly clear, with a low around 49.
Sunday
Sunny, with a high near 74.
Sunday Night
Mostly clear, with a low around 49.
Monday
Sunny, with a high near 74.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles NNW Discovery Bay CA
 37.97°N 121.63°W (Elev. 3 ft)
Last Update:
1:47 pm PDT Oct 19, 2026
Forecast Valid:
4pm PDT Oct 19, 2026-6pm PDT Oct 26, 2026
 
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Additional Resources

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Chance of Precipitation