Heat Wave Continues in the West; Critical Fire Weather Conditions in the High Plains

An anomalously early heat wave will continue to intensify and expand across the West and Southwest as the week progresses. Numerous daily and potentially monthly record highs are expected to be broken. Critical fire weather conditions will continue over the next couple of days across portions of the High Plains as gusty winds and dry conditions persist. Read More >

Hazardous Weather Conditions

Current conditions at

Hayward, Hayward Air Terminal (KHWD)

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

Clear

73°F

23°C

Humidity 65%
Wind Speed N 0 MPH
Barometer 29.95 in (1014.22 mb)
Dewpoint 61°F (16°C)
Visibility 10.00 mi
Last update 17 Mar 08:54 PM PDT
Extended Forecast for

2 Miles SW Castro Valley CA

Heat Advisory March 17, 09:10pm until March 20, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory March 17, 09:10pm until March 20, 08:00pm

    NOW until 8:00pm Fri

    Heat Advisory

  • Tonight

    Low: 61 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 93. Calm wind becoming west around 6 mph in the afternoon.

    High: 93 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 61. Light and variable wind.

    Low: 61 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 94. Calm wind becoming north around 6 mph in the afternoon.

    High: 94 °F

    Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 63. North northwest wind around 6 mph becoming calm  in the evening.

    Low: 63 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 93.

    High: 93 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 60.

    Low: 60 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 84.

    High: 84 °F

    Mostly Sunny

Detailed Forecast

Tonight
Clear, with a low around 61. Calm wind.
Wednesday
Sunny, with a high near 93. Calm wind becoming west around 6 mph in the afternoon.
Wednesday Night
Clear, with a low around 61. Light and variable wind.
Thursday
Sunny, with a high near 94. Calm wind becoming north around 6 mph in the afternoon.
Thursday Night
Clear, with a low around 63. North northwest wind around 6 mph becoming calm in the evening.
Friday
Sunny, with a high near 93.
Friday Night
Mostly clear, with a low around 60.
Saturday
Mostly sunny, with a high near 84.
Saturday Night
Mostly clear, with a low around 55.
Sunday
Sunny, with a high near 79.
Sunday Night
Partly cloudy, with a low around 53.
Monday
Mostly sunny, with a high near 77.
Monday Night
Mostly cloudy, with a low around 53.
Tuesday
A slight chance of rain. Mostly sunny, with a high near 74.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SW Castro Valley CA
 37.69°N 122.07°W (Elev. 197 ft)
1:49 pm PDT Mar 17, 2026
9pm PDT Mar 17, 2026-6pm PDT Mar 24, 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