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

57°F

14°C

Humidity 35%
Wind Speed SSW 3 MPH
Barometer 30.4 in (1029.46 mb)
Dewpoint 30°F (-1°C)
Visibility 10.00 mi
Last update 09 Jan 03:30 PM PST
Extended Forecast for

Union City CA

  • Tonight

    Tonight: Mostly clear, with a low around 38. East northeast wind 9 to 14 mph.

    Low: 38 °F

    Mostly Clear

  • Saturday

    Saturday: Partly sunny, with a high near 55. East northeast wind 5 to 9 mph.

    High: 55 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 39. East northeast wind 11 to 15 mph.

    Low: 39 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 57. Northeast wind 6 to 11 mph becoming light.

    High: 57 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 40. Northeast wind 8 to 13 mph.

    Low: 40 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 58.

    High: 58 °F

    Sunny

  • Monday Night

    Monday Night: Clear, with a low around 41.

    Low: 41 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 60.

    High: 60 °F

    Sunny

  • Tuesday Night

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

    Low: 43 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 38. East northeast wind 9 to 14 mph.
Saturday
Partly sunny, with a high near 55. East northeast wind 5 to 9 mph.
Saturday Night
Mostly cloudy, with a low around 39. East northeast wind 11 to 15 mph.
Sunday
Mostly sunny, with a high near 57. Northeast wind 6 to 11 mph becoming light.
Sunday Night
Mostly clear, with a low around 40. Northeast wind 8 to 13 mph.
Monday
Sunny, with a high near 58.
Monday Night
Clear, with a low around 41.
Tuesday
Sunny, with a high near 60.
Tuesday Night
Mostly clear, with a low around 43.
Wednesday
Sunny, with a high near 62.
Wednesday Night
Mostly clear, with a low around 44.
Thursday
Sunny, with a high near 63.
Thursday Night
Mostly clear, with a low around 45.
Friday
Sunny, with a high near 62.
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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:
1:09 pm PST Jan 9, 2026
Forecast Valid:
3pm 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