Prolonged Atmospheric River in the Pacific Northwest; Snow and High Winds from the Upper Midwest into the Northeast

A prolonged atmospheric river will continue to impact the Pacific Northwest into the Northern Rockies with heavy rainfall, areas of urban and river flooding, landslides, heavy mountain snow, and gusty winds into Thursday. A strong clipper system will bring the threat of heavy snow and high winds across the Upper Midwest/Great Lakes as well as portions of the interior Northeast and Appalachians. Read More >

Current conditions at

Hayward, Hayward Air Terminal (KHWD)

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

Clear

45°F

7°C

Humidity 87%
Wind Speed NE 8 MPH
Barometer 30.19 in (1022.35 mb)
Dewpoint 41°F (5°C)
Visibility 8.00 mi
Wind Chill41°F (5°C)
Last update 10 Dec 03:50 AM PST
Extended Forecast for

3 Miles SE Union City CA

  • Today

    Today: Sunny, with a high near 58. Calm wind becoming north around 6 mph in the afternoon.

    High: 58 °F

    Sunny

  • Tonight

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

    Low: 45 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 61. North northeast wind 3 to 5 mph.

    High: 61 °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. Light north northeast wind.

    High: 62 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 45.

    Low: 45 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 64.

    High: 64 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 45.

    Low: 45 °F

    Mostly Clear

  • Sunday

    Sunday: Patchy fog before 10am.  Otherwise, mostly sunny, with a high near 62.

    High: 62 °F

    Patchy Fog
    then Mostly
    Sunny

Detailed Forecast

Today
Sunny, with a high near 58. Calm wind becoming north around 6 mph in the afternoon.
Tonight
Mostly clear, with a low around 45. Calm wind.
Thursday
Sunny, with a high near 61. North northeast wind 3 to 5 mph.
Thursday Night
Mostly clear, with a low around 45. Calm wind.
Friday
Sunny, with a high near 62. Light north northeast wind.
Friday Night
Mostly clear, with a low around 45.
Saturday
Sunny, with a high near 64.
Saturday Night
Mostly clear, with a low around 45.
Sunday
Patchy fog before 10am. Otherwise, mostly sunny, with a high near 62.
Sunday Night
Mostly cloudy, with a low around 47.
Monday
Partly sunny, with a high near 63.
Monday Night
A chance of rain. Mostly cloudy, with a low around 52.
Tuesday
A chance of rain. Partly sunny, with a high near 64.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SE Union City CA
 37.57°N 121.98°W (Elev. 43 ft)
12:26 am PST Dec 10, 2025
4am 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