Tracking Atmospheric River in the Northwest U.S. and Clipper with Winter Weather in the Northeast U.S.

A prolonged atmospheric river will continue to bring gusty winds, heavy rainfall which may lead to urban and river flooding with possible landslides, and heavy inter-mountain snow over the Pacific Northwest into the northern Rockies through Thursday. A clipper will cross the Great Lakes and Northeast U.S. into Thursday with areas of moderate to heavy snow and mixed wintry precipitation. Read More >

Current conditions at

Hayward, Hayward Air Terminal (KHWD)

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

Clear

43°F

6°C

Humidity 93%
Wind Speed ESE 5 MPH
Barometer 30.19 in (1022.35 mb)
Dewpoint 41°F (5°C)
Visibility 8.00 mi
Wind Chill40°F (4°C)
Last update 10 Dec 06:20 AM PST
Extended Forecast for

2 Miles WSW Union City CA

  • Today

    Today: Patchy fog between 8am and 9am.  Otherwise, sunny, with a high near 57. Calm wind becoming west northwest around 6 mph in the afternoon.

    High: 57 °F

    Patchy Fog
    then Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 44. Calm wind.

    Low: 44 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 60. Calm wind becoming north around 5 mph in the afternoon.

    High: 60 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 45. Calm wind.

    Low: 45 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 62. Calm wind becoming north northeast around 5 mph in the afternoon.

    High: 62 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 44.

    Low: 44 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 63.

    High: 63 °F

    Sunny

  • Saturday Night

    Saturday Night: Patchy fog after 3am.  Otherwise, mostly clear, with a low around 45.

    Low: 45 °F

    Mostly Clear
    then Patchy
    Fog

  • Sunday

    Sunday: Patchy fog before 10am.  Otherwise, mostly sunny, with a high near 61.

    High: 61 °F

    Patchy Fog
    then Mostly
    Sunny

Detailed Forecast

Today
Patchy fog between 8am and 9am. Otherwise, sunny, with a high near 57. Calm wind becoming west northwest around 6 mph in the afternoon.
Tonight
Mostly clear, with a low around 44. Calm wind.
Thursday
Sunny, with a high near 60. Calm wind becoming north around 5 mph in the afternoon.
Thursday Night
Mostly clear, with a low around 45. Calm wind.
Friday
Sunny, with a high near 62. Calm wind becoming north northeast around 5 mph in the afternoon.
Friday Night
Mostly clear, with a low around 44.
Saturday
Sunny, with a high near 63.
Saturday Night
Patchy fog after 3am. Otherwise, mostly clear, with a low around 45.
Sunday
Patchy fog before 10am. Otherwise, mostly sunny, with a high near 61.
Sunday Night
Patchy fog before 9pm. Otherwise, mostly cloudy, with a low around 47.
Monday
A slight chance of rain. Mostly cloudy, with a high near 62.
Monday Night
A chance of rain. Mostly cloudy, with a low around 52.
Tuesday
A chance of rain. Mostly cloudy, with a high near 63.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles WSW Union City CA
 37.58°N 122.04°W (Elev. 121 ft)
12:26 am PST Dec 10, 2025
6am PST Dec 10, 2025-6pm PST Dec 16, 2025
 
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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