Severe Weather and Heavy Rain from the Great Lakes to the Mid-Atlantic; Heat Persists in the East

Widespread strong thunderstorms with damaging winds and locally heavy rain are expected from the Upper Ohio Valley into the southern Mid-Atlantic today and portions of the central Appalachians and Carolinas on Saturday. Monsoonal moisture will bring a flash flooding threat to the Desert Southwest. Sweltering heat persists from the Plains to the southern Mid-Atlantic through tonight. Read More >

Current conditions at

Hayward, Hayward Air Terminal (KHWD)

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

Partly Cloudy

61°F

16°C

Humidity 87%
Wind Speed SW 3 MPH
Barometer 29.91 in (1012.87 mb)
Dewpoint 57°F (14°C)
Visibility 8.00 mi
Last update 04 Sep 06:00 AM PDT
Extended Forecast for

Union City CA

  • Today

    Today: Mostly cloudy through mid morning, then gradual clearing, with a high near 71. Light west wind becoming west northwest 9 to 14 mph in the morning. Winds could gust as high as 21 mph.

    High: 71 °F

    Becoming
    Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 57. West northwest wind 6 to 11 mph becoming light west southwest  after midnight. Winds could gust as high as 18 mph.

    Low: 57 °F

    Increasing
    Clouds

  • Saturday

    Saturday: Cloudy through mid morning, then gradual clearing, with a high near 73. Light west southwest wind becoming west northwest 6 to 11 mph in the afternoon. Winds could gust as high as 20 mph.

    High: 73 °F

    Becoming
    Sunny

  • Saturday Night

    Saturday Night: Increasing clouds, with a low around 57. West southwest wind 5 to 13 mph, with gusts as high as 21 mph.

    Low: 57 °F

    Increasing
    Clouds

  • Sunday

    Sunday: Mostly sunny, with a high near 70. West southwest wind 5 to 13 mph, with gusts as high as 21 mph.

    High: 70 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 57.

    Low: 57 °F

    Partly Cloudy

  • Labor Day

    Labor Day: Mostly sunny, with a high near 79.

    High: 79 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 58.

    Low: 58 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 80.

    High: 80 °F

    Mostly Sunny

Detailed Forecast

Today
Mostly cloudy through mid morning, then gradual clearing, with a high near 71. Light west wind becoming west northwest 9 to 14 mph in the morning. Winds could gust as high as 21 mph.
Tonight
Increasing clouds, with a low around 57. West northwest wind 6 to 11 mph becoming light west southwest after midnight. Winds could gust as high as 18 mph.
Saturday
Cloudy through mid morning, then gradual clearing, with a high near 73. Light west southwest wind becoming west northwest 6 to 11 mph in the afternoon. Winds could gust as high as 20 mph.
Saturday Night
Increasing clouds, with a low around 57. West southwest wind 5 to 13 mph, with gusts as high as 21 mph.
Sunday
Mostly sunny, with a high near 70. West southwest wind 5 to 13 mph, with gusts as high as 21 mph.
Sunday Night
Partly cloudy, with a low around 57.
Labor Day
Mostly sunny, with a high near 79.
Monday Night
Mostly clear, with a low around 58.
Tuesday
Mostly sunny, with a high near 80.
Tuesday Night
A slight chance of rain after 11pm. Partly cloudy, with a low around 61.
Wednesday
A slight chance of rain. Partly sunny, with a high near 78.
Wednesday Night
A slight chance of rain. Partly cloudy, with a low around 63.
Thursday
Mostly sunny, with a high near 79.
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ABOUT THIS FORECAST

 
Point Forecast:
Union City CA
 37.59°N 122.02°W (Elev. 164 ft)
2:57 am PDT Sep 4, 2026
6am PDT Sep 4, 2026-6pm PDT Sep 10, 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