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

Tracking Weekend Storm Impacts

A storm and trailing cold front will continue to slowly move through the Gulf Coast and Southeast U.S. through this weekend with widespread rain showers and isolated thunderstorms. A fast-moving clipper storm may bring several inches of snow to the north-central Plains, Midwest, eastern Great Lakes, and Northeast regions this weekend. Read More >

Hazardous Weather Conditions

Current conditions at

Hayward, Hayward Air Terminal (KHWD)

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

Mist

45°F

7°C

Humidity 93%
Wind Speed ENE 6 MPH
Barometer 30.2 in (1022.69 mb)
Dewpoint 43°F (6°C)
Visibility 6.00 mi
Wind Chill42°F (6°C)
Last update 07 Dec 01:00 AM PST
Extended Forecast for

2 Miles SW Castro Valley CA

Coastal Flood Advisory December 7, 01:29am until December 7, 03:00pm
Click here for hazard details and duration
Coastal Flood Advisory
  •  
    Coastal Flood Advisory December 7, 01:29am until December 7, 03:00pm

    NOW until 3:00pm Sun

    Coastal Flood Advisory

  • Overnight

    Low: 45 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 62. Calm wind becoming west northwest around 6 mph in the afternoon.

    High: 62 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 45. Light east northeast wind.

    Low: 45 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 63. Calm wind becoming west northwest around 6 mph in the afternoon.

    High: 63 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Patchy fog after 5am. Otherwise, partly cloudy, with a low around 46. Calm wind.

    Low: 46 °F

    Mostly Clear
    then Patchy
    Fog

  • Tuesday

    Tuesday: Patchy fog before 7am. Otherwise, mostly sunny, with a high near 64.

    High: 64 °F

    Patchy Fog
    then Mostly
    Sunny

  • Tuesday Night

    Tuesday Night: Patchy fog after 5am. Otherwise, partly cloudy, with a low around 47.

    Low: 47 °F

    Partly Cloudy
    then Patchy
    Fog

  • Wednesday

    Wednesday: Patchy fog before 9am. Otherwise, mostly sunny, with a high near 65.

    High: 65 °F

    Patchy Fog
    then Sunny

Detailed Forecast

Overnight
Partly cloudy, with a low around 45. Calm wind.
Sunday
Mostly sunny, with a high near 62. Calm wind becoming west northwest around 6 mph in the afternoon.
Sunday Night
Mostly clear, with a low around 45. Light east northeast wind.
Monday
Mostly sunny, with a high near 63. Calm wind becoming west northwest around 6 mph in the afternoon.
Monday Night
Patchy fog after 5am. Otherwise, partly cloudy, with a low around 46. Calm wind.
Tuesday
Patchy fog before 7am. Otherwise, mostly sunny, with a high near 64.
Tuesday Night
Patchy fog after 5am. Otherwise, partly cloudy, with a low around 47.
Wednesday
Patchy fog before 9am. Otherwise, mostly sunny, with a high near 65.
Wednesday Night
Patchy fog after 4am. Otherwise, mostly clear, with a low around 48.
Thursday
Patchy fog before 9am. Otherwise, mostly sunny, with a high near 67.
Thursday Night
Mostly clear, with a low around 46.
Friday
Sunny, with a high near 66.
Friday Night
Mostly clear, with a low around 46.
Saturday
Mostly sunny, with a high near 65.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SW Castro Valley CA
 37.69°N 122.1°W (Elev. 174 ft)
Last Update:
12:26 am PST Dec 7, 2025
Forecast Valid:
1am PST Dec 7, 2025-6pm PST Dec 13, 2025
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation