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

Wet and Cool in the East this Memorial Day Weekend; Well Above Normal Temperatures in the Northern Plains

A wet Memorial Day weekend is in store for the East, with widespread rainfall of 1 to more than 2 inches expected from the Gulf Coast to southern New England. Well above normal temperatures are forecast to build across the northern Plains. Another round of heavy to excessive rainfall is expected to impact the western Gulf Coast this weekend with Flood Watches in effect. Read More >

Current conditions at

Hayward, Hayward Air Terminal (KHWD)

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

Clear

64°F

18°C

Humidity 64%
Wind Speed WNW 18 MPH
Barometer 29.81 in (1009.48 mb)
Dewpoint 52°F (11°C)
Visibility 10.00 mi
Last update 22 May 04:54 PM PDT
Extended Forecast for

Castro Valley CA

  • Tonight

    Tonight: Increasing clouds, with a low around 52. West wind 5 to 9 mph becoming light after midnight.

    Low: 52 °F

    Increasing
    Clouds

  • Saturday

    Saturday: Mostly cloudy through mid morning, then gradual clearing, with a high near 73. West wind 5 to 10 mph, with gusts as high as 18 mph.

    High: 73 °F

    Becoming
    Sunny

  • Saturday Night

    Saturday Night: Increasing clouds, with a low around 52. West wind 6 to 10 mph, with gusts as high as 20 mph.

    Low: 52 °F

    Increasing
    Clouds

  • Sunday

    Sunday: Partly sunny, then gradually becoming sunny, with a high near 71. West southwest wind 6 to 10 mph, with gusts as high as 20 mph.

    High: 71 °F

    Becoming
    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 51. West wind 7 to 10 mph, with gusts as high as 20 mph.

    Low: 51 °F

    Partly Cloudy

  • Memorial Day

    Memorial Day: Mostly sunny, with a high near 66.

    High: 66 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 51.

    Low: 51 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 69.

    High: 69 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 50.

    Low: 50 °F

    Mostly Clear

Detailed Forecast

Tonight
Increasing clouds, with a low around 52. West wind 5 to 9 mph becoming light after midnight.
Saturday
Mostly cloudy through mid morning, then gradual clearing, with a high near 73. West wind 5 to 10 mph, with gusts as high as 18 mph.
Saturday Night
Increasing clouds, with a low around 52. West wind 6 to 10 mph, with gusts as high as 20 mph.
Sunday
Partly sunny, then gradually becoming sunny, with a high near 71. West southwest wind 6 to 10 mph, with gusts as high as 20 mph.
Sunday Night
Partly cloudy, with a low around 51. West wind 7 to 10 mph, with gusts as high as 20 mph.
Memorial Day
Mostly sunny, with a high near 66.
Monday Night
Mostly cloudy, with a low around 51.
Tuesday
Sunny, with a high near 69.
Tuesday Night
Mostly clear, with a low around 50.
Wednesday
Sunny, with a high near 74.
Wednesday Night
Mostly clear, with a low around 52.
Thursday
Sunny, with a high near 75.
Thursday Night
Mostly clear, with a low around 52.
Friday
Sunny, with a high near 74.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Castro Valley CA
 37.72°N 122.05°W (Elev. 397 ft)
Last Update:
1:26 pm PDT May 22, 2026
Forecast Valid:
5pm PDT May 22, 2026-6pm PDT May 29, 2026
 
Forecast Discussion
 
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