High-Impact and Far-Reaching Winter Storm Continues; Cold Expands and Persists

A major winter storm will shift its impacts into the Northeast U.S. with heavy snow through tonight while over the Mid-Atlantic, sleet and freezing rain will diminish. Extremely cold air behind the storm will prolong dangerous travel and infrastructure impacts. Sub-zero low temperatures are expected nearly every morning from the Northern Plains through the Ohio Valley and into the Northeast. Read More >

Current conditions at

Hayward, Hayward Air Terminal (KHWD)

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

Clear

47°F

8°C

Humidity 79%
Wind Speed ENE 6 MPH
Barometer 30.26 in (1024.72 mb)
Dewpoint 41°F (5°C)
Visibility 7.00 mi
Wind Chill44°F (7°C)
Last update 26 Jan 05:54 AM PST
Extended Forecast for

Castro Valley CA

  • Today

    Today: Sunny, with a high near 63. East northeast wind 5 to 7 mph becoming calm.

    High: 63 °F

    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 41. Light and variable wind.

    Low: 41 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 63. Light and variable wind becoming southwest around 5 mph in the afternoon.

    High: 63 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A 20 percent chance of rain after 10pm.  Mostly cloudy, with a low around 46. Light and variable wind.

    Low: 46 °F

    Slight Chance
    Rain

  • Wednesday

    Wednesday: A 20 percent chance of rain before 10am.  Mostly sunny, with a high near 63. Calm wind becoming north around 6 mph in the afternoon.

    High: 63 °F

    Slight Chance
    Rain then
    Mostly Sunny

  • Wednesday Night

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

    Low: 44 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 65.

    High: 65 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 46.

    Low: 46 °F

    Partly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 65.

    High: 65 °F

    Partly Sunny

Detailed Forecast

Today
Sunny, with a high near 63. East northeast wind 5 to 7 mph becoming calm.
Tonight
Partly cloudy, with a low around 41. Light and variable wind.
Tuesday
Mostly sunny, with a high near 63. Light and variable wind becoming southwest around 5 mph in the afternoon.
Tuesday Night
A 20 percent chance of rain after 10pm. Mostly cloudy, with a low around 46. Light and variable wind.
Wednesday
A 20 percent chance of rain before 10am. Mostly sunny, with a high near 63. Calm wind becoming north around 6 mph in the afternoon.
Wednesday Night
Mostly clear, with a low around 44.
Thursday
Mostly sunny, with a high near 65.
Thursday Night
Partly cloudy, with a low around 46.
Friday
Partly sunny, with a high near 65.
Friday Night
Mostly cloudy, with a low around 46.
Saturday
Partly sunny, with a high near 66.
Saturday Night
A slight chance of rain. Mostly cloudy, with a low around 48.
Sunday
A slight chance of rain. Partly sunny, with a high near 66.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
Castro Valley CA
 37.69°N 122.05°W (Elev. 364 ft)
12:26 am PST Jan 26, 2026
6am PST Jan 26, 2026-6pm PST Feb 1, 2026
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database