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

Tracking Late December Winter Storm Expected to Impact the Northern Plains through the Northeast U.S.

A winter storm system will rapidly intensify over the Midwest on Sunday and track through the Great Lakes on Monday. Periods of heavy snow are anticipated across the Upper Great Lakes late Sunday and continuing into Monday. At least 1/10 inch of ice accumulation is expected from a wintry mix across much of the interior Northeast U.S. starting Sunday afternoon. Read More >

Current conditions at

Hayward, Hayward Air Terminal (KHWD)

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

Clear

50°F

10°C

Humidity 71%
Wind Speed N 0 MPH
Barometer 30.33 in (1027.09 mb)
Dewpoint 41°F (5°C)
Visibility 10.00 mi
Last update 28 Dec 09:54 AM PST
Extended Forecast for

2 Miles WSW Union City CA

  • Today

    Today: Sunny, with a high near 56. Calm wind becoming north northwest around 6 mph in the afternoon.

    High: 56 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 37. Light and variable wind.

    Low: 37 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 58. East northeast wind 3 to 6 mph.

    High: 58 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 36. Light east northeast wind.

    Low: 36 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 58. East northeast wind 3 to 6 mph.

    High: 58 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 40.

    Low: 40 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A 10 percent chance of rain after 4pm. Partly sunny, with a high near 56.

    High: 56 °F

    Mostly Cloudy
    then Slight
    Chance Rain

  • Wednesday Night

    Wednesday Night: A chance of rain, mainly after 10pm. Patchy fog after 3am. Otherwise, mostly cloudy, with a low around 45.

    Low: 45 °F

    Chance Rain
    and Patchy
    Fog

  • New Year's Day

    New Year's Day: Rain likely, mainly between 10am and 4pm. Patchy fog before 7am. Otherwise, mostly cloudy, with a high near 56.

    High: 56 °F

    Rain Likely
    and Patchy
    Fog

Detailed Forecast

Today
Sunny, with a high near 56. Calm wind becoming north northwest around 6 mph in the afternoon.
Tonight
Mostly clear, with a low around 37. Light and variable wind.
Monday
Sunny, with a high near 58. East northeast wind 3 to 6 mph.
Monday Night
Mostly clear, with a low around 36. Light east northeast wind.
Tuesday
Sunny, with a high near 58. East northeast wind 3 to 6 mph.
Tuesday Night
Mostly cloudy, with a low around 40.
Wednesday
A 10 percent chance of rain after 4pm. Partly sunny, with a high near 56.
Wednesday Night
A chance of rain, mainly after 10pm. Patchy fog after 3am. Otherwise, mostly cloudy, with a low around 45.
New Year's Day
Rain likely, mainly between 10am and 4pm. Patchy fog before 7am. Otherwise, mostly cloudy, with a high near 56.
Thursday Night
Rain likely, mainly after 10pm. Cloudy, with a low around 49.
Friday
Rain likely. Mostly cloudy, with a high near 59.
Friday Night
A chance of rain. Mostly cloudy, with a low around 49.
Saturday
A chance of rain. Mostly cloudy, with a high near 58.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles WSW Union City CA
 37.58°N 122.04°W (Elev. 121 ft)
Last Update:
6:40 am PST Dec 28, 2025
Forecast Valid:
10am PST Dec 28, 2025-6pm PST Jan 3, 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