Severe Thunderstorms for the Center of the Nation; Fire Weather Concerns; Flooding Issues for the Great Lakes Region

A round of severe thunderstorms are forecast across areas of the Southern Plains, Mississippi Valley and Great Lakes this afternoon and tonight; The threat for flash flooding will also accompany these storms. The rainfall for the Great Lakes region could prolong the ongoing flooding. Where the rain is needed, the Southern High Plains, critical fire weather concerns through today. Read More >

Current conditions at

Hayward, Hayward Air Terminal (KHWD)

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

Clear

56°F

13°C

Humidity 71%
Wind Speed WSW 3 MPH
Barometer 30.04 in (1017.27 mb)
Dewpoint 47°F (8°C)
Visibility 10.00 mi
Last update 17 Apr 10:54 PM PDT
Extended Forecast for

2 Miles WNW Castro Valley CA

  • Tonight

    Tonight: Partly cloudy, with a low around 48. Light and variable wind.

    Low: 48 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 76. Calm wind becoming west around 6 mph in the afternoon.

    High: 76 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Increasing clouds, with a low around 52. West wind around 5 mph becoming calm  in the evening.

    Low: 52 °F

    Increasing
    Clouds

  • Sunday

    Sunday: Cloudy, then gradually becoming mostly sunny, with a high near 72. Calm wind becoming west 5 to 9 mph in the afternoon.

    High: 72 °F

    Decreasing
    Clouds

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 51. West wind 6 to 10 mph becoming south after midnight.

    Low: 51 °F

    Partly Cloudy

  • Monday

    Monday: A 50 percent chance of showers.  Partly sunny, with a high near 72. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 72 °F

    Chance
    Showers

  • Monday Night

    Monday Night: Showers and possibly a thunderstorm.  Low around 53. Chance of precipitation is 80%.

    Low: 53 °F

    Showers

  • Tuesday

    Tuesday: Showers, with thunderstorms also possible after 11am.  Cloudy, with a high near 64.

    High: 64 °F

    Showers

  • Tuesday Night

    Tuesday Night: A chance of rain.  Mostly cloudy, with a low around 50.

    Low: 50 °F

    Chance Rain

Detailed Forecast

Tonight
Partly cloudy, with a low around 48. Light and variable wind.
Saturday
Mostly sunny, with a high near 76. Calm wind becoming west around 6 mph in the afternoon.
Saturday Night
Increasing clouds, with a low around 52. West wind around 5 mph becoming calm in the evening.
Sunday
Cloudy, then gradually becoming mostly sunny, with a high near 72. Calm wind becoming west 5 to 9 mph in the afternoon.
Sunday Night
Partly cloudy, with a low around 51. West wind 6 to 10 mph becoming south after midnight.
Monday
A 50 percent chance of showers. Partly sunny, with a high near 72. New precipitation amounts between a tenth and quarter of an inch possible.
Monday Night
Showers and possibly a thunderstorm. Low around 53. Chance of precipitation is 80%.
Tuesday
Showers, with thunderstorms also possible after 11am. Cloudy, with a high near 64.
Tuesday Night
A chance of rain. Mostly cloudy, with a low around 50.
Wednesday
A chance of rain, mainly before 11am. Mostly sunny, with a high near 65.
Wednesday Night
Mostly clear, with a low around 49.
Thursday
Mostly sunny, with a high near 67.
Thursday Night
Mostly clear, with a low around 48.
Friday
Sunny, with a high near 70.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles WNW Castro Valley CA
 37.73°N 122.11°W (Elev. 397 ft)
10:56 pm PDT Apr 17, 2026
11pm PDT Apr 17, 2026-6pm PDT Apr 24, 2026
 
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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