Storm Tracking Across the Plains; Powerful Pacific System is Approaching

Some heavy rain and possible flash flooding may affect the Central Plains through Thursday. Meanwhile, wintry weather conditions will spread through portions of Central and Northern Plains. A powerful storm system is forecast to approach the Pacific Northwest, then spreading inland and down through California through the end of this week. A series of storms will impact Alaska into the weekend. Read More >

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Current conditions at

Hayward, Hayward Air Terminal (KHWD)

Lat: 37.66083°NLon: 122.11833°WElev: 46ft.

Mostly Cloudy

43°F

6°C

Humidity	86%
Wind Speed	ENE 4 MPH
Barometer	30.3 in (1026.08 mb)
Dewpoint	39°F (4°C)
Visibility	10.00 mi
Wind Chill	41°F (5°C)
Last update	08 Dec 01:55 AM PST

More Information:

Local Forecast Office More Local Wx 3 Day History Mobile Weather Hourly Weather Forecast

Extended Forecast for

Castro Valley CA

Overnight

Partly Cloudy
Low: 41 °F
Thursday

Chance Rain
then Rain
High: 55 °F
Thursday
Night

Rain then
Chance Rain
Low: 41 °F
Friday

Patchy Fog
then Partly
Sunny
High: 54 °F
Friday
Night

Chance Rain
Low: 45 °F
Saturday

Rain and
Breezy
High: 55 °F
Saturday
Night

Showers
Low: 45 °F
Sunday

Rain
High: 52 °F
Sunday
Night

Chance Rain
Low: 37 °F

Detailed Forecast

Overnight

Partly cloudy, with a low around 41. Light east wind.

Thursday

Rain, mainly after 4pm. High near 55. Southeast wind 5 to 11 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

Thursday Night

Rain, mainly before 10pm. Low around 41. South southwest wind 5 to 10 mph becoming light and variable after midnight. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

Friday

Patchy fog before 9am. Otherwise, partly sunny, with a high near 54. Calm wind becoming southwest around 5 mph in the afternoon.

Friday Night

A 40 percent chance of rain after 10pm. Mostly cloudy, with a low around 45. South southeast wind 5 to 15 mph, with gusts as high as 18 mph. New precipitation amounts between a tenth and quarter of an inch possible.

Saturday

Rain. High near 55. Breezy. Chance of precipitation is 100%. New precipitation amounts between three quarters and one inch possible.

Saturday Night

Showers and possibly a thunderstorm before 4am, then rain and possibly a thunderstorm after 4am. Some of the storms could produce small hail. Low around 45. Chance of precipitation is 100%.

Sunday

Rain, mainly before 4pm. Mostly cloudy, with a high near 52.

Sunday Night

A chance of rain, mainly before 10pm. Mostly cloudy, with a low around 37.

Monday

Mostly sunny, with a high near 51.

Monday Night

Patchy frost. Otherwise, partly cloudy, with a low around 35.

Tuesday

Areas of frost. Otherwise, mostly sunny, with a high near 50.

Tuesday Night

Partly cloudy, with a low around 36.