Heavy Rain in the Southern U.S.; Active Weather Continues in Alaska

A storm system will bring heavy rainfall, thunderstorms, and flooding threats to portions of the Southern Plains today, the Lower Mississippi Valley Saturday, and the Southeast into the Mid-Atlantic on Sunday. Another Bering system will impact the Alaskan West Coast and Central Interior through the weekend bringing moderate to heavy snow, high winds, and/or some blizzard conditions. Read More >

Current conditions at

Hayward, Hayward Air Terminal (KHWD)

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

Clear

55°F

13°C

Humidity 71%
Wind Speed SE 4 MPH
Barometer 30.04 in (1017.27 mb)
Dewpoint 46°F (8°C)
Visibility 10.00 mi
Last update 14 Feb 11:00 AM PST
Extended Forecast for

Castro Valley CA

  • Today

    Today: Mostly cloudy, with a high near 61. Southwest wind 3 to 7 mph.

    High: 61 °F

    Mostly Cloudy

  • Tonight

    Tonight: Mostly cloudy, with a low around 49. South southeast wind 6 to 10 mph, with gusts as high as 18 mph.

    Low: 49 °F

    Mostly Cloudy

  • Sunday

    Sunday: A 20 percent chance of rain after 10am.  Cloudy, with a high near 62. South wind 9 to 15 mph, with gusts as high as 23 mph.  New precipitation amounts between a quarter and half of an inch possible.

    High: 62 °F

    Slight Chance
    Rain

  • Sunday Night

    Sunday Night: Rain, mainly after 7pm.  Low around 48. South southeast wind around 7 mph.  Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.

    Low: 48 °F

    Rain

  • Washington's Birthday

    Washington's Birthday: Rain.  High near 55. East wind 6 to 10 mph becoming south southwest in the afternoon.  Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.

    High: 55 °F

    Rain

  • Monday Night

    Monday Night: Rain.  Low around 44. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 44 °F

    Rain

  • Tuesday

    Tuesday: Rain.  High near 52. Chance of precipitation is 100%.

    High: 52 °F

    Rain

  • Tuesday Night

    Tuesday Night: Rain.  Mostly cloudy, with a low around 41.

    Low: 41 °F

    Rain

  • Wednesday

    Wednesday: Rain likely.  Mostly cloudy, with a high near 55.

    High: 55 °F

    Rain Likely

Detailed Forecast

Today
Mostly cloudy, with a high near 61. Southwest wind 3 to 7 mph.
Tonight
Mostly cloudy, with a low around 49. South southeast wind 6 to 10 mph, with gusts as high as 18 mph.
Sunday
A 20 percent chance of rain after 10am. Cloudy, with a high near 62. South wind 9 to 15 mph, with gusts as high as 23 mph. New precipitation amounts between a quarter and half of an inch possible.
Sunday Night
Rain, mainly after 7pm. Low around 48. South southeast wind around 7 mph. Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.
Washington's Birthday
Rain. High near 55. East wind 6 to 10 mph becoming south southwest in the afternoon. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.
Monday Night
Rain. Low around 44. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Tuesday
Rain. High near 52. Chance of precipitation is 100%.
Tuesday Night
Rain. Mostly cloudy, with a low around 41.
Wednesday
Rain likely. Mostly cloudy, with a high near 55.
Wednesday Night
Rain likely, mainly before 10pm. Mostly cloudy, with a low around 40.
Thursday
A chance of rain. Partly sunny, with a high near 56.
Thursday Night
A chance of rain. Mostly cloudy, with a low around 40.
Friday
A chance of rain. Partly sunny, with a high near 58.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
Castro Valley CA
 37.71°N 122.08°W (Elev. 397 ft)
2:46 am PST Feb 14, 2026
11am PST Feb 14, 2026-6pm PST Feb 20, 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