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.

Overcast

61°F

16°C

Humidity 82%
Wind Speed S 6 MPH
Barometer 29.96 in (1014.56 mb)
Dewpoint 55°F (13°C)
Visibility 8.00 mi
Last update 05 Sep 05:00 AM PDT
Extended Forecast for

Union City CA

  • Today

    Today: Mostly cloudy through mid morning, then gradual clearing, with a high near 73. Light and variable wind becoming west northwest 9 to 14 mph in the afternoon. Winds could gust as high as 21 mph.

    High: 73 °F

    Becoming
    Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 57. West northwest wind 5 to 9 mph becoming light west  after midnight.

    Low: 57 °F

    Increasing
    Clouds

  • Sunday

    Sunday: Mostly cloudy through mid morning, then gradual clearing, with a high near 71. Light west wind increasing to 9 to 14 mph in the morning. Winds could gust as high as 23 mph.

    High: 71 °F

    Becoming
    Sunny

  • Sunday Night

    Sunday Night: Patchy fog after 5am.  Otherwise, mostly clear, with a low around 56. West wind 9 to 14 mph becoming light southwest  after midnight. Winds could gust as high as 23 mph.

    Low: 56 °F

    Mostly Clear
    then Patchy
    Fog

  • Labor Day

    Labor Day: Patchy fog before 7am.  Otherwise, sunny, with a high near 79. Calm wind becoming west northwest 5 to 7 mph in the afternoon.

    High: 79 °F

    Patchy Fog
    then Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 60.

    Low: 60 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 82.

    High: 82 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A slight chance of rain after 11pm.  Partly cloudy, with a low around 63.

    Low: 63 °F

    Slight Chance
    Rain

  • Wednesday

    Wednesday: A slight chance of rain.  Partly sunny, with a high near 83.

    High: 83 °F

    Slight Chance
    Rain

Detailed Forecast

Today
Mostly cloudy through mid morning, then gradual clearing, with a high near 73. Light and variable wind becoming west northwest 9 to 14 mph in the afternoon. Winds could gust as high as 21 mph.
Tonight
Increasing clouds, with a low around 57. West northwest wind 5 to 9 mph becoming light west after midnight.
Sunday
Mostly cloudy through mid morning, then gradual clearing, with a high near 71. Light west wind increasing to 9 to 14 mph in the morning. Winds could gust as high as 23 mph.
Sunday Night
Patchy fog after 5am. Otherwise, mostly clear, with a low around 56. West wind 9 to 14 mph becoming light southwest after midnight. Winds could gust as high as 23 mph.
Labor Day
Patchy fog before 7am. Otherwise, sunny, with a high near 79. Calm wind becoming west northwest 5 to 7 mph in the afternoon.
Monday Night
Mostly clear, with a low around 60.
Tuesday
Mostly sunny, with a high near 82.
Tuesday Night
A slight chance of rain after 11pm. Partly cloudy, with a low around 63.
Wednesday
A slight chance of rain. Partly sunny, with a high near 83.
Wednesday Night
Partly cloudy, with a low around 66.
Thursday
Mostly sunny, with a high near 82.
Thursday Night
Partly cloudy, with a low around 62.
Friday
Partly sunny, with a high near 76.
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ABOUT THIS FORECAST

 
Point Forecast:
Union City CA
 37.58°N 122.04°W (Elev. 121 ft)
1:26 am PDT Sep 5, 2026
5am PDT Sep 5, 2026-6pm PDT Sep 11, 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