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

Severe Weather in the Central U.S.; Critical Fire Weather in the Southern Plains

Severe thunderstorms are expected to form today from northern Oklahoma into southern Minnesota. Very large hail and tornadoes will be the initial threats this afternoon, then transition into a wind threat tonight. Gusty winds, warm temperatures, and very dry conditions will create a Critical Risk of fire weather across portions of the southern Plains today. Read More >

Current conditions at

Hayward, Hayward Air Terminal (KHWD)

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

Clear

48°F

9°C

Humidity 93%
Wind Speed N 0 MPH
Barometer 30.13 in (1020.32 mb)
Dewpoint 46°F (8°C)
Visibility 10.00 mi
Last update 23 Apr 04:35 AM PDT
Extended Forecast for

Union City CA

  • Today

    Today: Sunny, with a high near 66. Calm wind becoming west northwest 5 to 9 mph in the afternoon.

    High: 66 °F

    Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 50. West southwest wind 3 to 8 mph.

    Low: 50 °F

    Increasing
    Clouds

  • Friday

    Friday: Cloudy, then gradually becoming mostly sunny, with a high near 62. Light west southwest wind becoming west 5 to 9 mph in the afternoon.

    High: 62 °F

    Decreasing
    Clouds

  • Friday Night

    Friday Night: Partly cloudy, with a low around 50. West wind 7 to 10 mph, with gusts as high as 18 mph.

    Low: 50 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly cloudy, with a high near 61. Southwest wind 6 to 10 mph, with gusts as high as 18 mph.

    High: 61 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 50.

    Low: 50 °F

    Mostly Cloudy

  • Sunday

    Sunday: A 20 percent chance of rain before 11am. Mostly sunny, with a high near 61.

    High: 61 °F

    Slight Chance
    Rain then
    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 47.

    Low: 47 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 64.

    High: 64 °F

    Mostly Sunny

Detailed Forecast

Today
Sunny, with a high near 66. Calm wind becoming west northwest 5 to 9 mph in the afternoon.
Tonight
Increasing clouds, with a low around 50. West southwest wind 3 to 8 mph.
Friday
Cloudy, then gradually becoming mostly sunny, with a high near 62. Light west southwest wind becoming west 5 to 9 mph in the afternoon.
Friday Night
Partly cloudy, with a low around 50. West wind 7 to 10 mph, with gusts as high as 18 mph.
Saturday
Mostly cloudy, with a high near 61. Southwest wind 6 to 10 mph, with gusts as high as 18 mph.
Saturday Night
Mostly cloudy, with a low around 50.
Sunday
A 20 percent chance of rain before 11am. Mostly sunny, with a high near 61.
Sunday Night
Mostly clear, with a low around 47.
Monday
Mostly sunny, with a high near 64.
Monday Night
Partly cloudy, with a low around 49.
Tuesday
Mostly sunny, with a high near 66.
Tuesday Night
Partly cloudy, with a low around 52.
Wednesday
Mostly sunny, with a high near 65.
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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:
2:52 am PDT Apr 23, 2026
Forecast Valid:
4am PDT Apr 23, 2026-6pm PDT Apr 29, 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