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

Dangerous Heat in the Southwest; Severe Thunderstorms from the Central Plains into the Ohio Valley

Dangerous heat will build across the Southwest U.S. through the end of the week with daytime highs of 110-115°F. Isolated to widely scattered severe storms are expected across parts of the central and southern High Plains, Great Lakes into the Ohio Valley, and parts of the Ozarks to Lower Mississippi Valley today. Read More >

Current conditions at

Hayward, Hayward Air Terminal (KHWD)

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

Partly Cloudy

62°F

17°C

Humidity 80%
Wind Speed W 3 MPH
Barometer 30.02 in (1016.59 mb)
Dewpoint 56°F (13°C)
Visibility 8.00 mi
Last update 26 Aug 09:01 AM PDT
Extended Forecast for

3 Miles SE Union City CA

  • Today

    Today: Sunny, with a high near 83. West wind 5 to 10 mph.

    High: 83 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 60. West wind 5 to 8 mph becoming calm in the evening.

    Low: 60 °F

    Mostly Clear

  • Thursday

    Thursday: Increasing clouds, with a high near 81. Light west wind increasing to 5 to 10 mph in the afternoon.

    High: 81 °F

    Increasing
    Clouds

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 60. West wind 5 to 10 mph becoming light west southwest after midnight.

    Low: 60 °F

    Mostly Cloudy

  • Friday

    Friday: A 20 percent chance of rain before 11am. Mostly cloudy, with a high near 74. Light southwest wind becoming west 5 to 9 mph in the morning.

    High: 74 °F

    Slight Chance
    Rain then
    Mostly Sunny

  • Friday Night

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

    Low: 56 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 72.

    High: 72 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 55.

    Low: 55 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 72.

    High: 72 °F

    Mostly Sunny

Detailed Forecast

Today
Sunny, with a high near 83. West wind 5 to 10 mph.
Tonight
Mostly clear, with a low around 60. West wind 5 to 8 mph becoming calm in the evening.
Thursday
Increasing clouds, with a high near 81. Light west wind increasing to 5 to 10 mph in the afternoon.
Thursday Night
Mostly cloudy, with a low around 60. West wind 5 to 10 mph becoming light west southwest after midnight.
Friday
A 20 percent chance of rain before 11am. Mostly cloudy, with a high near 74. Light southwest wind becoming west 5 to 9 mph in the morning.
Friday Night
Partly cloudy, with a low around 56.
Saturday
Mostly sunny, with a high near 72.
Saturday Night
Mostly clear, with a low around 55.
Sunday
Mostly sunny, with a high near 72.
Sunday Night
Mostly clear, with a low around 54.
Monday
Mostly sunny, with a high near 68.
Monday Night
Partly cloudy, with a low around 54.
Tuesday
Mostly sunny, with a high near 70.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SE Union City CA
 37.57°N 121.96°W (Elev. 367 ft)
Last Update:
2:52 am PDT Aug 26, 2026
Forecast Valid:
9am PDT Aug 26, 2026-6pm PDT Sep 1, 2026
 
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