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. Some snow and a wintry mix is occurring today to the north. 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.

Clear

43°F

6°C

Humidity 79%
Wind Speed NE 4 MPH
Barometer 30.19 in (1022.35 mb)
Dewpoint 37°F (3°C)
Visibility 9.00 mi
Wind Chill41°F (5°C)
Last update 05 Dec 05:54 AM PST
Extended Forecast for

Union City CA

Coastal Flood Advisory December 5, 06:12am until December 7, 03:00pm
Click here for hazard details and duration
Coastal Flood Advisory
  •  
    Coastal Flood Advisory December 5, 06:12am until December 7, 03:00pm

    NOW until 3:00pm Sun

    Coastal Flood Advisory

  • Today

    High: 59 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 44. Calm wind becoming north around 6 mph.

    Low: 44 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 60. Calm wind becoming west northwest 5 to 7 mph in the afternoon.

    High: 60 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 45. East northeast wind 5 to 10 mph.

    Low: 45 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 61. Northeast wind 5 to 8 mph becoming northwest in the morning.

    High: 61 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 46.

    Low: 46 °F

    Partly Cloudy

  • Monday

    Monday: Patchy fog before 10am. Otherwise, mostly sunny, with a high near 61.

    High: 61 °F

    Patchy Fog
    then Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 46.

    Low: 46 °F

    Partly Cloudy

Detailed Forecast

Today
Sunny, with a high near 59. Northeast wind 5 to 10 mph becoming light and variable.
Tonight
Mostly clear, with a low around 44. Calm wind becoming north around 6 mph.
Saturday
Sunny, with a high near 60. Calm wind becoming west northwest 5 to 7 mph in the afternoon.
Saturday Night
Mostly clear, with a low around 45. East northeast wind 5 to 10 mph.
Sunday
Mostly sunny, with a high near 61. Northeast wind 5 to 8 mph becoming northwest in the morning.
Sunday Night
Partly cloudy, with a low around 46.
Monday
Patchy fog before 10am. Otherwise, mostly sunny, with a high near 61.
Monday Night
Partly cloudy, with a low around 46.
Tuesday
Mostly sunny, with a high near 62.
Tuesday Night
Partly cloudy, with a low around 48.
Wednesday
Mostly sunny, with a high near 64.
Wednesday Night
Mostly clear, with a low around 48.
Thursday
Patchy fog. Otherwise, sunny, with a high near 64.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Union City CA
 37.61°N 122°W (Elev. 594 ft)
Last Update:
1:40 am PST Dec 5, 2025
Forecast Valid:
6am PST Dec 5, 2025-6pm PST Dec 11, 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