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

Dangerous Heat and Possible Flooding

Dangerous heat will persist across the Southwest U.S. through Saturday with daytime highs of 110-115°F. Extreme Heat Warnings remain in effect. Dangerous heat will build across the southern Plains again beginning this weekend. Heavy to excessive rain over the Carolinas Friday may lead to isolated areas of flash flooding. Read More >

Current conditions at

Hayward, Hayward Air Terminal (KHWD)

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

Clear

64°F

18°C

Humidity 77%
Wind Speed W 5 MPH
Barometer 29.96 in (1014.56 mb)
Dewpoint 57°F (14°C)
Visibility 8.00 mi
Last update 28 Aug 07:20 PM PDT
Extended Forecast for

2 Miles SSE Union City CA

  • Tonight

    Tonight: Increasing clouds, with a low around 58. West northwest wind 5 to 10 mph becoming light after midnight.

    Low: 58 °F

    Increasing
    Clouds

  • Saturday

    Saturday: Mostly cloudy, then gradually becoming sunny, with a high near 72. Light southwest wind becoming west 9 to 14 mph in the morning.

    High: 72 °F

    Decreasing
    Clouds

  • Saturday Night

    Saturday Night: Increasing clouds, with a low around 57. West wind 6 to 11 mph becoming light and variable.

    Low: 57 °F

    Increasing
    Clouds

  • Sunday

    Sunday: Cloudy through mid morning, then gradual clearing, with a high near 74. West wind 5 to 9 mph.

    High: 74 °F

    Becoming
    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 57. West wind 6 to 11 mph, with gusts as high as 18 mph.

    Low: 57 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 70.

    High: 70 °F

    Mostly Sunny

  • Monday Night

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

    Low: 57 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 70.

    High: 70 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 56.

    Low: 56 °F

    Partly Cloudy

Detailed Forecast

Tonight
Increasing clouds, with a low around 58. West northwest wind 5 to 10 mph becoming light after midnight.
Saturday
Mostly cloudy, then gradually becoming sunny, with a high near 72. Light southwest wind becoming west 9 to 14 mph in the morning.
Saturday Night
Increasing clouds, with a low around 57. West wind 6 to 11 mph becoming light and variable.
Sunday
Cloudy through mid morning, then gradual clearing, with a high near 74. West wind 5 to 9 mph.
Sunday Night
Mostly clear, with a low around 57. West wind 6 to 11 mph, with gusts as high as 18 mph.
Monday
Mostly sunny, with a high near 70.
Monday Night
Partly cloudy, with a low around 57.
Tuesday
Partly sunny, with a high near 70.
Tuesday Night
Partly cloudy, with a low around 56.
Wednesday
Partly sunny, with a high near 72.
Wednesday Night
Partly cloudy, with a low around 57.
Thursday
Mostly sunny, with a high near 73.
Thursday Night
Partly cloudy, with a low around 57.
Friday
Mostly sunny, with a high near 75.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SSE Union City CA
 37.59°N 122.02°W (Elev. 164 ft)
Last Update:
1:26 pm PDT Aug 28, 2026
Forecast Valid:
7pm PDT Aug 28, 2026-6pm PDT Sep 4, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation