Excessive Rainfall and Potential Tropical Cyclone in the South; Severe Thunderstorms in the Midwest

Excessive rainfall may produce locally considerable flash flooding over parts of the northwestern Gulf Coast, lower Mississippi River Valley, and Deep South through Thursday. Potential Tropical Cyclone One is forecast to become a tropical storm (Arthur) as it moves along or just off the northwestern Gulf coast through Wednesday. An outbreak of severe weather is forecast in the Midwest Wednesday. Read More >

Current conditions at

Hayward, Hayward Air Terminal (KHWD)

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

Overcast

60°F

16°C

Humidity 83%
Wind Speed NNW 9 MPH
Barometer 29.92 in (1013.21 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 16 Jun 10:54 PM PDT
Extended Forecast for

Union City CA

Coastal Flood Advisory June 16, 11:11pm until June 18, 05:00am
Click here for hazard details and duration
Coastal Flood Advisory
  •  
    Coastal Flood Advisory June 16, 11:11pm until June 18, 05:00am

    NOW until 5:00am Thu

    Coastal Flood Advisory

  • Tonight

    Low: 58 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 77. Light northwest wind becoming west northwest 6 to 11 mph in the morning. Winds could gust as high as 18 mph.

    High: 77 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Increasing clouds, with a low around 57. West northwest wind 6 to 11 mph becoming light west  after midnight. Winds could gust as high as 18 mph.

    Low: 57 °F

    Increasing
    Clouds

  • Thursday

    Thursday: Partly sunny, then gradually becoming sunny, with a high near 76. Light west wind increasing to 5 to 10 mph in the afternoon.

    High: 76 °F

    Becoming
    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 57. West wind 6 to 13 mph, with gusts as high as 21 mph.

    Low: 57 °F

    Mostly Clear

  • Juneteenth

    Juneteenth: Mostly sunny, with a high near 75.

    High: 75 °F

    Mostly Sunny

  • Friday Night

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

    Low: 57 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 73.

    High: 73 °F

    Mostly Sunny

Detailed Forecast

Tonight
Partly cloudy, with a low around 58. Northwest wind around 6 mph becoming calm after midnight.
Wednesday
Sunny, with a high near 77. Light northwest wind becoming west northwest 6 to 11 mph in the morning. Winds could gust as high as 18 mph.
Wednesday Night
Increasing clouds, with a low around 57. West northwest wind 6 to 11 mph becoming light west after midnight. Winds could gust as high as 18 mph.
Thursday
Partly sunny, then gradually becoming sunny, with a high near 76. Light west wind increasing to 5 to 10 mph in the afternoon.
Thursday Night
Mostly clear, with a low around 57. West wind 6 to 13 mph, with gusts as high as 21 mph.
Juneteenth
Mostly sunny, with a high near 75.
Friday Night
Partly cloudy, with a low around 57.
Saturday
Mostly sunny, with a high near 73.
Saturday Night
Partly cloudy, with a low around 55.
Sunday
Mostly sunny, with a high near 74.
Sunday Night
Patchy fog. Otherwise, mostly clear, with a low around 55.
Monday
Patchy fog. Otherwise, mostly sunny, with a high near 74.
Monday Night
Patchy fog. Otherwise, mostly clear, with a low around 55.
Tuesday
Mostly sunny, with a high near 77.
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ABOUT THIS FORECAST

 
Point Forecast:
Union City CA
 37.58°N 122.04°W (Elev. 121 ft)
1:39 pm PDT Jun 16, 2026
11pm PDT Jun 16, 2026-6pm PDT Jun 23, 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