Marine and Coastal Impacts from Imelda; Unsettled Weather in the West

Swells and high surf from both Imelda and Humberto are expected to bring dangerous marine conditions and rip currents to much of the East Coast over the next several days. A series of Pacific frontal systems will bring waves of showers and thunderstorms to portions of northern California and the Pacific Northwest through midweek. Read More >

Current conditions at

BLACK DIAMOND (PIBC1)

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

NA

60°F

16°C

Humidity 90%
Wind Speed S 7 MPH
Barometer NA
Dewpoint 57°F (14°C)
Visibility NA
Last update 29 Sep 11:28 PM PDT
Extended Forecast for

Discovery Bay CA

  • Overnight

    Overnight: A 20 percent chance of rain.  Mostly cloudy, with a low around 62. Calm wind.

    Low: 62 °F

    Slight Chance
    Rain

  • Tuesday

    Tuesday: A 20 percent chance of rain before 11am.  Mostly sunny, with a high near 79. Calm wind becoming west southwest 5 to 8 mph in the afternoon.

    High: 79 °F

    Slight Chance
    Rain then
    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A 20 percent chance of rain after 11pm.  Partly cloudy, with a low around 60. West wind around 5 mph becoming calm  in the evening.

    Low: 60 °F

    Slight Chance
    Rain

  • Wednesday

    Wednesday: A 40 percent chance of rain.  Partly sunny, with a high near 73. Light and variable wind.  New precipitation amounts of less than a tenth of an inch possible.

    High: 73 °F

    Chance Rain

  • Wednesday Night

    Wednesday Night: A 20 percent chance of rain before 11pm.  Mostly cloudy, with a low around 60. West northwest wind around 6 mph becoming calm  in the evening.  New precipitation amounts of less than a tenth of an inch possible.

    Low: 60 °F

    Slight Chance
    Rain then
    Mostly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 78.

    High: 78 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 56.

    Low: 56 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 82.

    High: 82 °F

    Sunny

  • Friday Night

    Friday Night: Clear, with a low around 56.

    Low: 56 °F

    Clear

Detailed Forecast

Overnight
A 20 percent chance of rain. Mostly cloudy, with a low around 62. Calm wind.
Tuesday
A 20 percent chance of rain before 11am. Mostly sunny, with a high near 79. Calm wind becoming west southwest 5 to 8 mph in the afternoon.
Tuesday Night
A 20 percent chance of rain after 11pm. Partly cloudy, with a low around 60. West wind around 5 mph becoming calm in the evening.
Wednesday
A 40 percent chance of rain. Partly sunny, with a high near 73. Light and variable wind. New precipitation amounts of less than a tenth of an inch possible.
Wednesday Night
A 20 percent chance of rain before 11pm. Mostly cloudy, with a low around 60. West northwest wind around 6 mph becoming calm in the evening. New precipitation amounts of less than a tenth of an inch possible.
Thursday
Mostly sunny, with a high near 78.
Thursday Night
Mostly clear, with a low around 56.
Friday
Sunny, with a high near 82.
Friday Night
Clear, with a low around 56.
Saturday
Sunny, with a high near 86.
Saturday Night
Clear, with a low around 56.
Sunday
Sunny, with a high near 84.
Sunday Night
Mostly clear, with a low around 55.
Monday
Sunny, with a high near 80.
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ABOUT THIS FORECAST

 
Point Forecast:
Discovery Bay CA
 37.93°N 121.59°W (Elev. 3 ft)
8:15 pm PDT Sep 29, 2025
12am PDT Sep 30, 2025-6pm PDT Oct 6, 2025
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database