Super Typhoon Sinlaku to Impact the Marianas and Guam; Severe Weather Threat from the Central Plains to the Great Lakes

Super Typhoon Sinlaku will bring destructive winds, widespread heavy rain/flooding, and thunderstorms to the Marianas Islands into Wednesday. Tropical Storm conditions are likely over Guam. Severe thunderstorms and heavy rain are likely across the Upper Mississippi Valley and Great Lakes region with potential for large to very large hail, damaging wind, and tornadoes through Tuesday. Read More >

Current conditions at

Hayward, Hayward Air Terminal (KHWD)

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

Mostly Cloudy

61°F

16°C

Humidity 59%
Wind Speed W 9 MPH
Barometer 30.13 in (1020.32 mb)
Dewpoint 46°F (8°C)
Visibility 10.00 mi
Last update 13 Apr 12:20 PM PDT
Extended Forecast for

2 Miles SW Castro Valley CA

  • This Afternoon

    This Afternoon: Sunny, with a high near 65. West wind 5 to 9 mph.

    High: 65 °F

    Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 49. Southwest wind 3 to 8 mph.

    Low: 49 °F

    Increasing
    Clouds

  • Tuesday

    Tuesday: Partly sunny, then gradually becoming sunny, with a high near 64. Light west southwest wind becoming west 5 to 10 mph in the morning.

    High: 64 °F

    Becoming
    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 48. West southwest wind 5 to 10 mph.

    Low: 48 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 66. Light west southwest wind becoming west 6 to 11 mph in the morning.

    High: 66 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 50.

    Low: 50 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 69.

    High: 69 °F

    Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 48.

    Low: 48 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 74.

    High: 74 °F

    Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 65. West wind 5 to 9 mph.
Tonight
Increasing clouds, with a low around 49. Southwest wind 3 to 8 mph.
Tuesday
Partly sunny, then gradually becoming sunny, with a high near 64. Light west southwest wind becoming west 5 to 10 mph in the morning.
Tuesday Night
Partly cloudy, with a low around 48. West southwest wind 5 to 10 mph.
Wednesday
Partly sunny, with a high near 66. Light west southwest wind becoming west 6 to 11 mph in the morning.
Wednesday Night
Partly cloudy, with a low around 50.
Thursday
Sunny, with a high near 69.
Thursday Night
Clear, with a low around 48.
Friday
Sunny, with a high near 74.
Friday Night
Partly cloudy, with a low around 48.
Saturday
Mostly sunny, with a high near 75.
Saturday Night
Mostly cloudy, with a low around 50.
Sunday
A slight chance of showers. Partly sunny, with a high near 68.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SW Castro Valley CA
 37.69°N 122.1°W (Elev. 174 ft)
12:36 pm PDT Apr 13, 2026
12pm PDT Apr 13, 2026-6pm PDT Apr 19, 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