Thunderstorms and Heavy Rainfall in the Plains; Hazardous Heat in the South and Southeast

Severe thunderstorms will be possible across the northern/central Plains through Tuesday afternoon and from the central Plains to the Mid-Mississippi Valley Tuesday evening through Wednesday morning. Storms may produce large hail and damaging wind gusts, and heavy rainfall may lead to scattered instances of flash flooding. Meanwhile, hazardous heat persists across the South and Southeast. 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 NW 10 MPH
Barometer 30.06 in (1017.95 mb)
Dewpoint 55°F (13°C)
Visibility 8.00 mi
Last update 17 Aug 11:00 PM PDT
Extended Forecast for

3 Miles SW Union City CA

  • Tonight

    Tonight: Mostly cloudy, with a low around 58. Northwest wind 3 to 6 mph.

    Low: 58 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Cloudy through mid morning, then gradual clearing, with a high near 78. Calm wind becoming west northwest 5 to 9 mph in the afternoon.

    High: 78 °F

    Gradual
    Clearing

  • Tuesday Night

    Tuesday Night: Increasing clouds, with a low around 59. Northwest wind 5 to 8 mph becoming calm  after midnight.

    Low: 59 °F

    Increasing
    Clouds

  • Wednesday

    Wednesday: Mostly cloudy, then gradually becoming sunny, with a high near 76. Light west northwest wind increasing to 5 to 10 mph in the afternoon.

    High: 76 °F

    Decreasing
    Clouds

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 60. West wind 5 to 10 mph.

    Low: 60 °F

    Partly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 74.

    High: 74 °F

    Partly Sunny

  • Thursday Night

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

    Low: 59 °F

    Mostly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 72.

    High: 72 °F

    Partly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 58.

    Low: 58 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 58. Northwest wind 3 to 6 mph.
Tuesday
Cloudy through mid morning, then gradual clearing, with a high near 78. Calm wind becoming west northwest 5 to 9 mph in the afternoon.
Tuesday Night
Increasing clouds, with a low around 59. Northwest wind 5 to 8 mph becoming calm after midnight.
Wednesday
Mostly cloudy, then gradually becoming sunny, with a high near 76. Light west northwest wind increasing to 5 to 10 mph in the afternoon.
Wednesday Night
Partly cloudy, with a low around 60. West wind 5 to 10 mph.
Thursday
Partly sunny, with a high near 74.
Thursday Night
Mostly cloudy, with a low around 59.
Friday
Partly sunny, with a high near 72.
Friday Night
Partly cloudy, with a low around 58.
Saturday
Mostly sunny, with a high near 73.
Saturday Night
Mostly clear, with a low around 58.
Sunday
Mostly sunny, with a high near 75.
Sunday Night
Partly cloudy, with a low around 59.
Monday
Mostly sunny, with a high near 73.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SW Union City CA
 37.58°N 122.04°W (Elev. 121 ft)
10:12 pm PDT Aug 17, 2026
11pm PDT Aug 17, 2026-6pm PDT Aug 24, 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