Another Arctic Blast in the East; Eastern U.S. Winter Storm

A powerful Arctic blast will bring dangerously cold, record low temperatures to the upper Ohio Valley, Mid-Atlantic, Gulf Coast and Southeast U.S. this weekend. A rapidly deepening storm will produce widespread heavy snow and wind from the southern Appalachians across the Carolinas and southern Virginia into Sunday. Storm-force winds and coastal flooding will be possible along the East Coast. Read More >

Current conditions at

Hayward, Hayward Air Terminal (KHWD)

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

Mist

48°F

9°C

Humidity 87%
Wind Speed NE 3 MPH
Barometer 30.13 in (1020.32 mb)
Dewpoint 45°F (7°C)
Visibility 5.00 mi
Last update 01 Feb 05:15 AM PST
Extended Forecast for

3 Miles WNW Castro Valley CA

Coastal Flood Advisory February 1, 05:38am until February 1, 12:00pm
Click here for hazard details and duration
Coastal Flood Advisory
  •  
    Coastal Flood Advisory February 1, 05:38am until February 1, 12:00pm

    NOW until 12:00pm Sun

    Coastal Flood Advisory

  • Today

    High: 66 °F

    Partly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 46. Light and variable wind.

    Low: 46 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 68. East northeast wind around 5 mph becoming calm.

    High: 68 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 46. Calm wind.

    Low: 46 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 69. Northeast wind 3 to 6 mph.

    High: 69 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 46.

    Low: 46 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 70.

    High: 70 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 47.

    Low: 47 °F

    Mostly Clear

Detailed Forecast

Today
Partly sunny, with a high near 66. Calm wind becoming west 5 to 9 mph in the afternoon.
Tonight
Partly cloudy, with a low around 46. Light and variable wind.
Monday
Sunny, with a high near 68. East northeast wind around 5 mph becoming calm.
Monday Night
Mostly clear, with a low around 46. Calm wind.
Tuesday
Sunny, with a high near 69. Northeast wind 3 to 6 mph.
Tuesday Night
Mostly clear, with a low around 46.
Wednesday
Sunny, with a high near 70.
Wednesday Night
Mostly clear, with a low around 47.
Thursday
Sunny, with a high near 69.
Thursday Night
Partly cloudy, with a low around 49.
Friday
Mostly sunny, with a high near 69.
Friday Night
Partly cloudy, with a low around 49.
Saturday
Mostly sunny, with a high near 68.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles WNW Castro Valley CA
 37.73°N 122.11°W (Elev. 397 ft)
12:26 am PST Feb 1, 2026
5am PST Feb 1, 2026-6pm PST Feb 7, 2026
 
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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