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

Severe Thunderstorms and Flooding Threat in the Central U.S.; Rip Currents Along East Coast Beaches

Widespread thunderstorms will continue across the central and southern Plains today ahead of an approaching cold front. Heavy to excessive rainfall could lead to instances of flash flooding. Flood Watches have been issued. Swells from Hurricane Gabrielle are likely to cause life-threatening surf and rip current conditions along the U.S. East Coast over the next couple of days. Read More >

Hazardous Weather Conditions

Current conditions at

Hayward, Hayward Air Terminal (KHWD)

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

Clear

91°F

33°C

Humidity 27%
Wind Speed WNW 13 MPH
Barometer 29.77 in (1008.13 mb)
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Heat Index88°F (31°C)
Last update 23 Sep 04:30 PM PDT
Extended Forecast for

3 Miles SE Union City CA

Heat Advisory until September 23, 07:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory until September 23, 07:00pm

    NOW until 7:00pm Tue

    Heat Advisory

  • This Afternoon

    High: 92 °F

    Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 64. West northwest wind 5 to 7 mph becoming south in the evening.

    Low: 64 °F

    Increasing
    Clouds

  • Wednesday

    Wednesday: A 40 percent chance of showers. Mostly cloudy, with a high near 77. Light west southwest wind becoming west 5 to 9 mph in the morning.

    High: 77 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: A 20 percent chance of showers. Mostly cloudy, with a low around 62. West wind around 5 mph becoming calm in the evening.

    Low: 62 °F

    Slight Chance
    Showers

  • Thursday

    Thursday: Mostly sunny, with a high near 77. Calm wind becoming west 5 to 9 mph in the afternoon.

    High: 77 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 58.

    Low: 58 °F

    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 81.

    High: 81 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 59.

    Low: 59 °F

    Mostly Clear

Detailed Forecast

This Afternoon
Sunny, with a high near 92. West northwest wind around 9 mph.
Tonight
Increasing clouds, with a low around 64. West northwest wind 5 to 7 mph becoming south in the evening.
Wednesday
A 40 percent chance of showers. Mostly cloudy, with a high near 77. Light west southwest wind becoming west 5 to 9 mph in the morning.
Wednesday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 62. West wind around 5 mph becoming calm in the evening.
Thursday
Mostly sunny, with a high near 77. Calm wind becoming west 5 to 9 mph in the afternoon.
Thursday Night
Partly cloudy, with a low around 58.
Friday
Sunny, with a high near 81.
Friday Night
Mostly clear, with a low around 59.
Saturday
Mostly sunny, with a high near 77.
Saturday Night
Partly cloudy, with a low around 60.
Sunday
Partly sunny, with a high near 74.
Sunday Night
Partly cloudy, with a low around 59.
Monday
A slight chance of showers. Partly sunny, with a high near 74.
Monday Night
A slight chance of showers. Mostly cloudy, with a low around 58.
Tuesday
A slight chance of showers. Mostly sunny, with a high near 75.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SE Union City CA
 37.57°N 121.96°W (Elev. 367 ft)
Last Update:
1:26 pm PDT Sep 23, 2025
Forecast Valid:
4pm PDT Sep 23, 2025-6pm PDT Sep 30, 2025
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation