Tracking a Winter Storm; Unusual Early-Season Heat Wave in the Southwest

A major winter storm will organize across the Northern Plains today and then rapidly strengthen as it moves into the Great Lakes on Sunday. Heavy snow and blowing snow are likely to persist over the Great Lakes into Monday night. Dry and gusty winds will produce a critical fire risk across the central/southern Plains. An early heatwave will begin to intensify over the western U.S. into next week. Read More >

Current conditions at

Hayward, Hayward Air Terminal (KHWD)

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

Clear

57°F

14°C

Humidity 86%
Wind Speed W 5 MPH
Barometer 30.08 in (1018.63 mb)
Dewpoint 53°F (12°C)
Visibility 10.00 mi
Last update 14 Mar 09:54 PM PDT
Extended Forecast for

Castro Valley CA

Heat Advisory March 16, 10:00am until March 20, 08:00pm
Click here for hazard details and duration
Heat Advisory
  • Tonight

    Tonight: Mostly clear, with a low around 52. South southwest wind around 5 mph becoming calm  in the evening.

    Low: 52 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 84. Calm wind becoming north around 6 mph in the afternoon.

    High: 84 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 57. Northwest wind around 6 mph becoming calm  in the evening.

    Low: 57 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 89. Calm wind becoming north around 6 mph in the afternoon.

    High: 89 °F

    Sunny

  • Monday Night

    Monday Night: Clear, with a low around 60. North northwest wind around 5 mph becoming calm  in the evening.

    Low: 60 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 92.

    High: 92 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Clear, with a low around 61.

    Low: 61 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 91.

    High: 91 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 59.

    Low: 59 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 52. South southwest wind around 5 mph becoming calm in the evening.
Sunday
Sunny, with a high near 84. Calm wind becoming north around 6 mph in the afternoon.
Sunday Night
Partly cloudy, with a low around 57. Northwest wind around 6 mph becoming calm in the evening.
Monday
Sunny, with a high near 89. Calm wind becoming north around 6 mph in the afternoon.
Monday Night
Clear, with a low around 60. North northwest wind around 5 mph becoming calm in the evening.
Tuesday
Sunny, with a high near 92.
Tuesday Night
Clear, with a low around 61.
Wednesday
Sunny, with a high near 91.
Wednesday Night
Partly cloudy, with a low around 59.
Thursday
Mostly sunny, with a high near 92.
Thursday Night
Partly cloudy, with a low around 62.
Friday
Sunny, with a high near 93.
Friday Night
Partly cloudy, with a low around 62.
Saturday
Sunny, with a high near 87.
Basemap Options
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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 Mar 14, 2026
10pm PDT Mar 14, 2026-6pm PDT Mar 21, 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