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

Heavy Rain and Flooding Concerns in Hawaii; Severe Weather in the Plains

A storm system is expected to bring strong winds, widespread heavy rainfall, and flooding concerns to the Hawaiian Islands through the weekend. Strong to severe thunderstorms are forecast from the Southern Plains to the Mid-Missouri Valley Thursday afternoon and evening. Large hail and strong winds are the primary threats. Read More >

Current conditions at

BLACK DIAMOND (PIBC1)

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

NA

60°F

16°C

Humidity 63%
Wind Speed SE 7 MPH
Barometer NA
Dewpoint 47°F (8°C)
Visibility NA
Last update 09 Apr 04:28 AM PDT
Extended Forecast for

5 Miles N Discovery Bay CA

  • Today

    Today: A 30 percent chance of showers and thunderstorms after 5pm. Partly sunny, with a high near 77. Calm wind becoming west northwest 5 to 7 mph in the afternoon.

    High: 77 °F

    Partly Sunny
    then Chance
    Showers

  • Tonight

    Tonight: A chance of rain and thunderstorms. Patchy fog after 5am. Otherwise, mostly cloudy, with a low around 55. West wind 5 to 7 mph becoming calm after midnight. Chance of precipitation is 50%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 55 °F

    Chance Rain
    and Patchy
    Fog

  • Friday

    Friday: Showers and possibly a thunderstorm. Patchy fog before 8am. High near 67. Calm wind becoming southwest 5 to 7 mph in the afternoon. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    High: 67 °F

    Showers and
    Patchy Fog

  • Friday Night

    Friday Night: Showers likely and possibly a thunderstorm before 8pm, then rain likely after 8pm. Mostly cloudy, with a low around 53. West southwest wind 5 to 8 mph becoming light and variable. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 53 °F

    Showers
    Likely

  • Saturday

    Saturday: Rain likely, then showers and possibly a thunderstorm after 11am. High near 63. South southwest wind 6 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    High: 63 °F

    Showers

  • Saturday Night

    Saturday Night: Rain and possibly a thunderstorm before 11pm, then showers likely and possibly a thunderstorm between 11pm and 2am, then rain likely after 2am. Low around 46. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 46 °F

    Showers

  • Sunday

    Sunday: Rain likely, then showers and possibly a thunderstorm after 11am. High near 59. Chance of precipitation is 80%.

    High: 59 °F

    Showers

  • Sunday Night

    Sunday Night: A chance of rain before 11pm. Partly cloudy, with a low around 44.

    Low: 44 °F

    Chance Rain
    then Partly
    Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 66.

    High: 66 °F

    Mostly Sunny

Detailed Forecast

Today
A 30 percent chance of showers and thunderstorms after 5pm. Partly sunny, with a high near 77. Calm wind becoming west northwest 5 to 7 mph in the afternoon.
Tonight
A chance of rain and thunderstorms. Patchy fog after 5am. Otherwise, mostly cloudy, with a low around 55. West wind 5 to 7 mph becoming calm after midnight. Chance of precipitation is 50%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday
Showers and possibly a thunderstorm. Patchy fog before 8am. High near 67. Calm wind becoming southwest 5 to 7 mph in the afternoon. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Friday Night
Showers likely and possibly a thunderstorm before 8pm, then rain likely after 8pm. Mostly cloudy, with a low around 53. West southwest wind 5 to 8 mph becoming light and variable. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday
Rain likely, then showers and possibly a thunderstorm after 11am. High near 63. South southwest wind 6 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Saturday Night
Rain and possibly a thunderstorm before 11pm, then showers likely and possibly a thunderstorm between 11pm and 2am, then rain likely after 2am. Low around 46. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Sunday
Rain likely, then showers and possibly a thunderstorm after 11am. High near 59. Chance of precipitation is 80%.
Sunday Night
A chance of rain before 11pm. Partly cloudy, with a low around 44.
Monday
Mostly sunny, with a high near 66.
Monday Night
Mostly clear, with a low around 44.
Tuesday
Sunny, with a high near 71.
Tuesday Night
Mostly clear, with a low around 46.
Wednesday
Mostly sunny, with a high near 73.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles N Discovery Bay CA
 37.97°N 121.57°W (Elev. 3 ft)
Last Update:
1:26 am PDT Apr 9, 2026
Forecast Valid:
5am PDT Apr 9, 2026-6pm PDT Apr 15, 2026
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation