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

Storm Systems to Impact the Central and Eastern U.S. Through the Weekend

Two storm systems will track through the central and eastern U.S. today through this weekend with areas of gusty winds, rain and heavy snow. Severe thunderstorms and heavy to excessive rainfall is forecast today from the Lower Mississippi River Valley to the Tennessee Valley. Damaging winds, a few tornadoes, and areas of flooding are possible. Read More >

Current conditions at

Hayward, Hayward Air Terminal (KHWD)

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

Clear

46°F

8°C

Humidity 56%
Wind Speed N 0 MPH
Barometer 30.45 in (1031.16 mb)
Dewpoint 32°F (0°C)
Visibility 10.00 mi
Last update 09 Jan 10:00 PM PST
Extended Forecast for

Union City CA

  • Tonight

    Tonight: Patchy frost between 4am and 5am. Otherwise, partly cloudy, with a low around 37. Calm wind.

    Low: 37 °F

    Mostly Clear
    then Patchy
    Frost

  • Saturday

    Saturday: Partly sunny, with a high near 58. Calm wind becoming northeast around 5 mph in the afternoon.

    High: 58 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 38. Light east northeast wind.

    Low: 38 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 60. Calm wind becoming north northeast around 5 mph in the afternoon.

    High: 60 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 39. Calm wind.

    Low: 39 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 60.

    High: 60 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 41.

    Low: 41 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 63.

    High: 63 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 43.

    Low: 43 °F

    Mostly Clear

Detailed Forecast

Tonight
Patchy frost between 4am and 5am. Otherwise, partly cloudy, with a low around 37. Calm wind.
Saturday
Partly sunny, with a high near 58. Calm wind becoming northeast around 5 mph in the afternoon.
Saturday Night
Mostly cloudy, with a low around 38. Light east northeast wind.
Sunday
Mostly sunny, with a high near 60. Calm wind becoming north northeast around 5 mph in the afternoon.
Sunday Night
Mostly clear, with a low around 39. Calm wind.
Monday
Sunny, with a high near 60.
Monday Night
Mostly clear, with a low around 41.
Tuesday
Sunny, with a high near 63.
Tuesday Night
Mostly clear, with a low around 43.
Wednesday
Sunny, with a high near 65.
Wednesday Night
Mostly clear, with a low around 45.
Thursday
Sunny, with a high near 66.
Thursday Night
Mostly clear, with a low around 45.
Friday
Sunny, with a high near 66.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Union City CA
 37.59°N 122.02°W (Elev. 164 ft)
Last Update:
1:09 pm PST Jan 9, 2026
Forecast Valid:
10pm PST Jan 9, 2026-6pm PST Jan 16, 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