Heavy Snow and Disruptive Ice in the Upper Midwest; Severe Thunderstorms in the Southern Plains

A late season winter storm will produce a combination of heavy snow and disruptive ice starting this evening in the Northern Plains and moving into the Upper Midwest and Great Lakes by tonight continuing through Thursday. Severe thunderstorms will likely produce severe wind gusts, large hail, a few tornadoes, and heavy rainfall across the southern and central Plains today. Read More >

Current conditions at

Hayward, Hayward Air Terminal (KHWD)

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

light rain,mist

57°F

14°C

Humidity 93%
Wind Speed WNW 13 MPH
Barometer 29.97 in (1014.9 mb)
Dewpoint 55°F (13°C)
Visibility 5.00 mi
Last update 01 Apr 02:35 PM PDT
Extended Forecast for

Castro Valley CA

  • This Afternoon

    This Afternoon: A 40 percent chance of rain before 5pm.  Partly sunny, with a high near 65. West southwest wind 13 to 16 mph, with gusts as high as 22 mph.  New precipitation amounts of less than a tenth of an inch possible.

    High: 65 °F

    Chance Rain

  • Tonight

    Tonight: Rain, mainly before 1am.  Low around 46. West southwest wind 8 to 14 mph becoming northwest after midnight. Winds could gust as high as 24 mph.  Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 46 °F

    Rain

  • Thursday

    Thursday: Sunny, with a high near 66. North northwest wind 8 to 11 mph.

    High: 66 °F

    Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 46. North wind 5 to 9 mph becoming calm  after midnight.

    Low: 46 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 75. Light east northeast wind becoming north northeast 6 to 11 mph in the morning. Winds could gust as high as 28 mph.

    High: 75 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 50.

    Low: 50 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 81.

    High: 81 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 54.

    Low: 54 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 81.

    High: 81 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
A 40 percent chance of rain before 5pm. Partly sunny, with a high near 65. West southwest wind 13 to 16 mph, with gusts as high as 22 mph. New precipitation amounts of less than a tenth of an inch possible.
Tonight
Rain, mainly before 1am. Low around 46. West southwest wind 8 to 14 mph becoming northwest after midnight. Winds could gust as high as 24 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Thursday
Sunny, with a high near 66. North northwest wind 8 to 11 mph.
Thursday Night
Clear, with a low around 46. North wind 5 to 9 mph becoming calm after midnight.
Friday
Sunny, with a high near 75. Light east northeast wind becoming north northeast 6 to 11 mph in the morning. Winds could gust as high as 28 mph.
Friday Night
Mostly clear, with a low around 50.
Saturday
Sunny, with a high near 81.
Saturday Night
Mostly clear, with a low around 54.
Sunday
Mostly sunny, with a high near 81.
Sunday Night
Partly cloudy, with a low around 52.
Monday
Mostly sunny, with a high near 74.
Monday Night
Partly cloudy, with a low around 52.
Tuesday
Mostly sunny, with a high near 72.
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ABOUT THIS FORECAST

 
Point Forecast:
Castro Valley CA
 37.71°N 122.08°W (Elev. 397 ft)
1:26 pm PDT Apr 1, 2026
2pm PDT Apr 1, 2026-6pm PDT Apr 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