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

Heavy Rain and Flooding Possible in the Southwest U.S, Ohio Valley, and Hawaii

Heavy rainfall is expected to continue through Thursday over New Mexico into far west Texas. Flash flooding and debris flows in wildfire burn areas will be possible. Heavy rain and flash flooding is also expected over the southern Appalachians and Ohio Valley. Tropical Depression 15-E, southeast of Hawaii, is expected to bring heavy rain beginning today to the Big Island and Maui. Read More >

Current conditions at

Hayward, Hayward Air Terminal (KHWD)

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

Mist

57°F

14°C

Humidity 93%
Wind Speed WNW 5 MPH
Barometer 29.95 in (1014.22 mb)
Dewpoint 55°F (13°C)
Visibility 6.00 mi
Last update 23 Sep 08:35 AM PDT
Extended Forecast for

Union City CA

  • Today

    Today: Partly sunny, then gradually becoming sunny, with a high near 83. Calm wind becoming west northwest 5 to 9 mph in the afternoon.

    High: 83 °F

    Becoming
    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 60. Northwest wind around 5 mph becoming calm in the evening.

    Low: 60 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 82. Calm wind becoming west northwest 5 to 9 mph in the afternoon.

    High: 82 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 59. Southwest wind 5 to 10 mph.

    Low: 59 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 74. Light southwest wind becoming west 5 to 10 mph in the morning. Winds could gust as high as 18 mph.

    High: 74 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 56.

    Low: 56 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 76.

    High: 76 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 55.

    Low: 55 °F

    Partly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 70.

    High: 70 °F

    Partly Sunny

Detailed Forecast

Today
Partly sunny, then gradually becoming sunny, with a high near 83. Calm wind becoming west northwest 5 to 9 mph in the afternoon.
Tonight
Mostly clear, with a low around 60. Northwest wind around 5 mph becoming calm in the evening.
Thursday
Mostly sunny, with a high near 82. Calm wind becoming west northwest 5 to 9 mph in the afternoon.
Thursday Night
Mostly cloudy, with a low around 59. Southwest wind 5 to 10 mph.
Friday
Mostly sunny, with a high near 74. Light southwest wind becoming west 5 to 10 mph in the morning. Winds could gust as high as 18 mph.
Friday Night
Mostly clear, with a low around 56.
Saturday
Mostly sunny, with a high near 76.
Saturday Night
Partly cloudy, with a low around 55.
Sunday
Partly sunny, with a high near 70.
Sunday Night
Partly cloudy, with a low around 55.
Monday
Mostly sunny, with a high near 76.
Monday Night
Mostly clear, with a low around 56.
Tuesday
Sunny, with a high near 78.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Union City CA
 37.59°N 122.02°W (Elev. 164 ft)
Last Update:
2:32 am PDT Sep 23, 2026
Forecast Valid:
8am PDT Sep 23, 2026-6pm PDT Sep 29, 2026
 
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Additional Resources

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Chance of Precipitation