Heavy Rainfall and Flooding Threats in the Midwest and Ohio Valley; Heat Continues in the Plains and Southeast

An active pattern will continue to bring heavy to excessive rainfall and flash flooding threats to the Midwest and Ohio Valley over the next couple of days. Dangerous heat continues across the central/southern Plains and Southeast U.S. into next week. There is potential for record-tying/breaking temperatures with many areas forecast to see their hottest temperatures so far this year. Read More >

Current conditions at

Hayward, Hayward Air Terminal (KHWD)

Lat: 37.66083°NLon: 122.11833°WElev: 46.0ft.

Clear

63°F

17°C

Humidity 77%
Wind Speed NW 9 MPH
Barometer 29.83 in (1010.16 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 12 Aug 09:00 PM PDT
Extended Forecast for

2 Miles SW Castro Valley CA

Coastal Flood Advisory August 12, 09:20pm until August 13, 02:00am
Click here for hazard details and duration
Coastal Flood Advisory
  •  
    Coastal Flood Advisory August 12, 09:20pm until August 13, 02:00am

    NOW until 2:00am Thu

    Coastal Flood Advisory

  • Tonight

    Low: 60 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly cloudy, then gradually becoming sunny, with a high near 72. West southwest wind 8 to 13 mph, with gusts as high as 20 mph.

    High: 72 °F

    Decreasing
    Clouds

  • Thursday Night

    Thursday Night: Increasing clouds, with a low around 60. West southwest wind 8 to 14 mph, with gusts as high as 21 mph.

    Low: 60 °F

    Increasing
    Clouds

  • Friday

    Friday: Cloudy through mid morning, then gradual clearing, with a high near 70. West southwest wind 7 to 10 mph.

    High: 70 °F

    Gradual
    Clearing

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 59. West wind 6 to 11 mph, with gusts as high as 18 mph.

    Low: 59 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 71.

    High: 71 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 58.

    Low: 58 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly cloudy, with a high near 70.

    High: 70 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 60. West wind 6 to 8 mph.
Thursday
Mostly cloudy, then gradually becoming sunny, with a high near 72. West southwest wind 8 to 13 mph, with gusts as high as 20 mph.
Thursday Night
Increasing clouds, with a low around 60. West southwest wind 8 to 14 mph, with gusts as high as 21 mph.
Friday
Cloudy through mid morning, then gradual clearing, with a high near 70. West southwest wind 7 to 10 mph.
Friday Night
Mostly cloudy, with a low around 59. West wind 6 to 11 mph, with gusts as high as 18 mph.
Saturday
Partly sunny, with a high near 71.
Saturday Night
Mostly cloudy, with a low around 58.
Sunday
Mostly cloudy, with a high near 70.
Sunday Night
Mostly cloudy, with a low around 58.
Monday
Mostly cloudy, with a high near 70.
Monday Night
Mostly cloudy, with a low around 59.
Tuesday
Mostly cloudy, with a high near 73.
Tuesday Night
Mostly cloudy, with a low around 60.
Wednesday
Partly sunny, with a high near 74.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SW Castro Valley CA
 37.69°N 122.07°W (Elev. 197 ft)
1:27 pm PDT Aug 12, 2026
9pm PDT Aug 12, 2026-6pm PDT Aug 19, 2026
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database