Severe Thunderstorms in the Midwest and Arizona; Heat Continues in the Southeast and Southwest

Thunderstorms, some severe, may lead to scattered instances of flash flooding across the Midwest and Ohio Valley and southern Arizona. The threat will shift to the Mid-Atlantic coast on Thursday. Dangerous heat persists in the South and Southeast while building into the Southwest. Overnight lows will be so warm that little-to-no relief from the scorching daytime highs will be available. Read More >

Current conditions at

Hayward, Hayward Air Terminal (KHWD)

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

Overcast

59°F

15°C

Humidity 87%
Wind Speed NNW 8 MPH
Barometer 29.95 in (1014.22 mb)
Dewpoint 55°F (13°C)
Visibility 9.00 mi
Last update 19 Aug 11:00 PM PDT
Extended Forecast for

Union City CA

  • Tonight

    Tonight: Increasing clouds, with a low around 59. Northwest wind around 6 mph.

    Low: 59 °F

    Increasing
    Clouds

  • Thursday

    Thursday: Cloudy, then gradually becoming mostly sunny, with a high near 75. Light west northwest wind increasing to 5 to 10 mph in the morning.

    High: 75 °F

    Decreasing
    Clouds

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 59. Northwest wind 5 to 8 mph.

    Low: 59 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly cloudy, then gradually becoming sunny, with a high near 73. West northwest wind 5 to 10 mph, with gusts as high as 18 mph.

    High: 73 °F

    Decreasing
    Clouds

  • Friday Night

    Friday Night: Partly cloudy, with a low around 59. West wind 6 to 10 mph, with gusts as high as 18 mph.

    Low: 59 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 74.

    High: 74 °F

    Mostly Sunny

  • Saturday Night

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

    Low: 58 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 76.

    High: 76 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 59.

    Low: 59 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Increasing clouds, with a low around 59. Northwest wind around 6 mph.
Thursday
Cloudy, then gradually becoming mostly sunny, with a high near 75. Light west northwest wind increasing to 5 to 10 mph in the morning.
Thursday Night
Mostly cloudy, with a low around 59. Northwest wind 5 to 8 mph.
Friday
Mostly cloudy, then gradually becoming sunny, with a high near 73. West northwest wind 5 to 10 mph, with gusts as high as 18 mph.
Friday Night
Partly cloudy, with a low around 59. West wind 6 to 10 mph, with gusts as high as 18 mph.
Saturday
Mostly sunny, with a high near 74.
Saturday Night
Mostly clear, with a low around 58.
Sunday
Mostly sunny, with a high near 76.
Sunday Night
Mostly cloudy, with a low around 59.
Monday
Partly sunny, with a high near 75.
Monday Night
Mostly cloudy, with a low around 58.
Tuesday
Partly sunny, with a high near 75.
Tuesday Night
Mostly cloudy, with a low around 58.
Wednesday
Mostly sunny, with a high near 77.
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ABOUT THIS FORECAST

 
Point Forecast:
Union City CA
 37.59°N 122.02°W (Elev. 164 ft)
9:16 pm PDT Aug 19, 2026
11pm PDT Aug 19, 2026-6pm PDT Aug 26, 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