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

Watching Hurricane Erin; Heavy Rainfall Threat for Upper Midwest; Heatrisk for Mississippi Valley

Hurricane Erin continues to track westward with its outer bands bringing heavy rainfall and gusty winds for Puerto Rico and US Virgin Islands. Life-threatening surf and rip currents are occurring and will spread across the Atlantic coasts this week. Meanwhile, heavy rainfall and possible flooding are in the forecast for upper Midwest through Monday. Heatrisk continues for the Mississippi Valley. Read More >

Current conditions at

BLACK DIAMOND (PIBC1)

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

NA

61°F

16°C

Humidity 57%
Wind Speed SSE 11 MPH
Barometer NA
Dewpoint 46°F (8°C)
Visibility NA
Last update 17 Aug 07:28 AM PDT
Extended Forecast for

3 Miles N Discovery Bay CA

  • Today

    Today: Sunny, with a high near 83. West southwest wind 7 to 14 mph.

    High: 83 °F

    Sunny

  • Tonight

    Tonight: Clear, with a low around 57. Southwest wind 6 to 11 mph, with gusts as high as 18 mph.

    Low: 57 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 86. Light west southwest wind becoming west 5 to 10 mph in the morning.

    High: 86 °F

    Sunny

  • Monday Night

    Monday Night: Clear, with a low around 57. West southwest wind 5 to 11 mph, with gusts as high as 18 mph.

    Low: 57 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 89. Light west southwest wind becoming west 5 to 9 mph in the afternoon.

    High: 89 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Clear, with a low around 57.

    Low: 57 °F

    Clear

  • Wednesday

    Wednesday: Sunny and hot, with a high near 96.

    High: 96 °F

    Hot

  • Wednesday Night

    Wednesday Night: Clear, with a low around 62.

    Low: 62 °F

    Clear

  • Thursday

    Thursday: Sunny and hot, with a high near 101.

    High: 101 °F

    Hot

Detailed Forecast

Today
Sunny, with a high near 83. West southwest wind 7 to 14 mph.
Tonight
Clear, with a low around 57. Southwest wind 6 to 11 mph, with gusts as high as 18 mph.
Monday
Sunny, with a high near 86. Light west southwest wind becoming west 5 to 10 mph in the morning.
Monday Night
Clear, with a low around 57. West southwest wind 5 to 11 mph, with gusts as high as 18 mph.
Tuesday
Sunny, with a high near 89. Light west southwest wind becoming west 5 to 9 mph in the afternoon.
Tuesday Night
Clear, with a low around 57.
Wednesday
Sunny and hot, with a high near 96.
Wednesday Night
Clear, with a low around 62.
Thursday
Sunny and hot, with a high near 101.
Thursday Night
Mostly clear, with a low around 63.
Friday
Sunny and hot, with a high near 100.
Friday Night
Clear, with a low around 63.
Saturday
Sunny and hot, with a high near 98.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles N Discovery Bay CA
 37.95°N 121.59°W (Elev. -2 ft)
Last Update:
2:33 am PDT Aug 17, 2025
Forecast Valid:
8am PDT Aug 17, 2025-6pm PDT Aug 23, 2025
 
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