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

Severe Weather Threats Across the Plains; Dangerous Heat and Wildfire Concerns for the West; Watching the Tropics

Severe thunderstorms are expected across the Central Plains accompanied by damaging wind gusts and large hail. In addition, heavy rainfall may lead to instances of flash flooding from the Plains and mid-Atlantic regions. The heavy rainfall threat continues across Florida and across the northern Gulf as we monitor a tropical disturbance tracking westward. Critical fire weather for the Great Basin. Read More >

Current conditions at

Hayward, Hayward Air Terminal (KHWD)

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

Partly Cloudy

64°F

18°C

Humidity 72%
Wind Speed NNW 3 MPH
Barometer 29.92 in (1013.21 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 15 Jul 10:30 AM PDT
Extended Forecast for

Union City CA

  • Today

    Today: Sunny, with a high near 76. West northwest wind 6 to 11 mph, with gusts as high as 18 mph.

    High: 76 °F

    Sunny

  • Tonight

    Tonight: Patchy fog between 1am and 3am. Otherwise, increasing clouds, with a low around 54. West northwest wind 6 to 10 mph, with gusts as high as 18 mph.

    Low: 54 °F

    Mostly Clear
    then Patchy
    Fog

  • Wednesday

    Wednesday: Patchy fog before 9am. Otherwise, mostly cloudy through mid morning, then gradual clearing, with a high near 72. West southwest wind 5 to 9 mph.

    High: 72 °F

    Patchy Fog
    then Sunny

  • Wednesday Night

    Wednesday Night: Patchy fog between 2am and 5am. Otherwise, increasing clouds, with a low around 54. West southwest wind 6 to 11 mph, with gusts as high as 18 mph.

    Low: 54 °F

    Mostly Clear
    then Patchy
    Fog

  • Thursday

    Thursday: Patchy fog before 9am. Otherwise, mostly sunny, with a high near 74. Light west southwest wind becoming west 5 to 10 mph in the afternoon.

    High: 74 °F

    Patchy Fog
    then Sunny

  • Thursday Night

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

    Low: 54 °F

    Partly Cloudy

  • Friday

    Friday: Patchy fog before 9am. Otherwise, mostly sunny, with a high near 73.

    High: 73 °F

    Patchy Fog
    then Sunny

  • Friday Night

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

    Low: 54 °F

    Partly Cloudy

  • Saturday

    Saturday: Patchy fog before 9am. Otherwise, mostly sunny, with a high near 73.

    High: 73 °F

    Patchy Fog
    then Sunny

Detailed Forecast

Today
Sunny, with a high near 76. West northwest wind 6 to 11 mph, with gusts as high as 18 mph.
Tonight
Patchy fog between 1am and 3am. Otherwise, increasing clouds, with a low around 54. West northwest wind 6 to 10 mph, with gusts as high as 18 mph.
Wednesday
Patchy fog before 9am. Otherwise, mostly cloudy through mid morning, then gradual clearing, with a high near 72. West southwest wind 5 to 9 mph.
Wednesday Night
Patchy fog between 2am and 5am. Otherwise, increasing clouds, with a low around 54. West southwest wind 6 to 11 mph, with gusts as high as 18 mph.
Thursday
Patchy fog before 9am. Otherwise, mostly sunny, with a high near 74. Light west southwest wind becoming west 5 to 10 mph in the afternoon.
Thursday Night
Partly cloudy, with a low around 54.
Friday
Patchy fog before 9am. Otherwise, mostly sunny, with a high near 73.
Friday Night
Partly cloudy, with a low around 54.
Saturday
Patchy fog before 9am. Otherwise, mostly sunny, with a high near 73.
Saturday Night
Partly cloudy, with a low around 54.
Sunday
Mostly sunny, with a high near 74.
Sunday Night
Partly cloudy, with a low around 55.
Monday
Mostly sunny, with a high near 71.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Union City CA
 37.61°N 122°W (Elev. 594 ft)
Last Update:
6:22 am PDT Jul 15, 2025
Forecast Valid:
10am PDT Jul 15, 2025-6pm PDT Jul 21, 2025
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation