Dangerous Heat in the Southwest; Severe Thunderstorms and Heavy Rain in the Northeast and Mid-Atlantic

Dangerous heat will persist across the Southwest U.S. through Friday with daytime highs of 110-115°F. Heat across the southern Plains will briefly ease to near-normal by late week. Strong to severe thunderstorms may produce damaging wind, hail, a tornado or two, heavy rain and flash flooding across parts of the Mid-Atlantic and Northeast. Heavy rainfall threat continues across the Gulf Coast. Read More >

Current conditions at

Hayward, Hayward Air Terminal (KHWD)

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

Clear

73°F

23°C

Humidity 60%
Wind Speed W 4 MPH
Barometer 29.97 in (1014.9 mb)
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Last update 27 Aug 10:35 AM PDT
Extended Forecast for

Union City CA

  • Today

    Today: A 20 percent chance of showers.  Partly sunny, with a high near 80. West wind 5 to 9 mph.

    High: 80 °F

    Slight Chance
    Showers

  • Tonight

    Tonight: A 20 percent chance of showers.  Mostly cloudy, with a low around 61. West northwest wind 5 to 7 mph becoming calm  after midnight.

    Low: 61 °F

    Slight Chance
    Showers

  • Friday

    Friday: A 20 percent chance of showers.  Cloudy, with a high near 74. Light northwest wind becoming west northwest 6 to 11 mph in the morning.

    High: 74 °F

    Slight Chance
    Showers

  • Friday Night

    Friday Night: Partly cloudy, with a low around 57. West southwest wind 5 to 10 mph.

    Low: 57 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 71. West southwest wind 5 to 10 mph, with gusts as high as 18 mph.

    High: 71 °F

    Mostly Sunny

  • Saturday Night

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

    Low: 56 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 71.

    High: 71 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 54.

    Low: 54 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 67.

    High: 67 °F

    Mostly Sunny

Detailed Forecast

Today
A 20 percent chance of showers. Partly sunny, with a high near 80. West wind 5 to 9 mph.
Tonight
A 20 percent chance of showers. Mostly cloudy, with a low around 61. West northwest wind 5 to 7 mph becoming calm after midnight.
Friday
A 20 percent chance of showers. Cloudy, with a high near 74. Light northwest wind becoming west northwest 6 to 11 mph in the morning.
Friday Night
Partly cloudy, with a low around 57. West southwest wind 5 to 10 mph.
Saturday
Mostly sunny, with a high near 71. West southwest wind 5 to 10 mph, with gusts as high as 18 mph.
Saturday Night
Partly cloudy, with a low around 56.
Sunday
Mostly sunny, with a high near 71.
Sunday Night
Partly cloudy, with a low around 54.
Monday
Mostly sunny, with a high near 67.
Monday Night
Partly cloudy, with a low around 54.
Tuesday
Partly sunny, with a high near 70.
Tuesday Night
Partly cloudy, with a low around 56.
Wednesday
Patchy fog. Otherwise, partly sunny, with a high near 72.
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ABOUT THIS FORECAST

 
Point Forecast:
Union City CA
 37.61°N 122.02°W (Elev. 184 ft)
6:47 am PDT Aug 27, 2026
10am PDT Aug 27, 2026-6pm PDT Sep 2, 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