Heavy Lake Effect Snow; Subfreezing Temperatures in the Eastern U.S.

A multi-day heavy lake effect snow event is expected downwind of Lakes Erie and Ontario through New Year's Day. The Arctic front will continue to bring increasing winds to the Northeast that will remain gusty. Subfreezing overnight low temperatures will be found as far south as the Gulf Coast. Read More >

Current conditions at

Hayward, Hayward Air Terminal (KHWD)

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

Clear

54°F

12°C

Humidity 37%
Wind Speed N 4 MPH
Barometer 30.22 in (1023.37 mb)
Dewpoint 28°F (-2°C)
Visibility 10.00 mi
Last update 29 Dec 07:20 PM PST
Extended Forecast for

Union City CA

Coastal Flood Advisory December 31, 05:00am until January 4, 02:00pm
Click here for hazard details and duration
Coastal Flood Advisory
  • Tonight

    Tonight: Clear, with a low around 39. Northeast wind 7 to 9 mph.

    Low: 39 °F

    Clear

  • Tuesday

    Tuesday: Increasing clouds, with a high near 55. East northeast wind 6 to 10 mph.

    High: 55 °F

    Increasing
    Clouds

  • Tuesday Night

    Tuesday Night: A 30 percent chance of rain after 4am.  Mostly cloudy, with a low around 46. East northeast wind 9 to 14 mph.

    Low: 46 °F

    Mostly Cloudy
    then Chance
    Rain

  • Wednesday

    Wednesday: Rain likely, mainly after 10am.  Cloudy, with a high near 52. East northeast wind 6 to 11 mph.  Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 52 °F

    Rain Likely

  • Wednesday Night

    Wednesday Night: Rain.  Low around 49. Southeast wind 7 to 9 mph.  Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 49 °F

    Rain

  • New Year's Day

    New Year's Day: Rain.  High near 56. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 56 °F

    Rain

  • Thursday Night

    Thursday Night: Rain likely.  Mostly cloudy, with a low around 53. Chance of precipitation is 70%.

    Low: 53 °F

    Rain Likely

  • Friday

    Friday: Rain likely.  Cloudy, with a high near 58.

    High: 58 °F

    Rain Likely

  • Friday Night

    Friday Night: Rain.  Mostly cloudy, with a low around 48.

    Low: 48 °F

    Rain

Detailed Forecast

Tonight
Clear, with a low around 39. Northeast wind 7 to 9 mph.
Tuesday
Increasing clouds, with a high near 55. East northeast wind 6 to 10 mph.
Tuesday Night
A 30 percent chance of rain after 4am. Mostly cloudy, with a low around 46. East northeast wind 9 to 14 mph.
Wednesday
Rain likely, mainly after 10am. Cloudy, with a high near 52. East northeast wind 6 to 11 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Wednesday Night
Rain. Low around 49. Southeast wind 7 to 9 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
New Year's Day
Rain. High near 56. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Thursday Night
Rain likely. Mostly cloudy, with a low around 53. Chance of precipitation is 70%.
Friday
Rain likely. Cloudy, with a high near 58.
Friday Night
Rain. Mostly cloudy, with a low around 48.
Saturday
Rain likely, mainly before 4pm. Mostly cloudy, with a high near 54.
Saturday Night
Rain likely. Mostly cloudy, with a low around 46.
Sunday
A chance of rain. Partly sunny, with a high near 55.
Sunday Night
A chance of rain. Mostly cloudy, with a low around 46.
Monday
A chance of rain. Partly sunny, with a high near 55.
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ABOUT THIS FORECAST

 
Point Forecast:
Union City CA
 37.61°N 122°W (Elev. 594 ft)
12:27 pm PST Dec 29, 2025
7pm PST Dec 29, 2025-6pm PST Jan 5, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database