Early Spring Heat Wave in the Southwest U.S.; Critical Fire Weather in the Central Rockies and Plains

An unusual early Spring heat wave will continue much above-normal temperatures over the Southwest U.S. through early next week. Many locations are likely to set records for the highest-ever March temperature. Periods of critical fire weather will persist from the central Rockies to the central Plains through Saturday as gusty winds and low relative humidity continue. Read More >

Hazardous Weather Conditions

Current conditions at

Hayward, Hayward Air Terminal (KHWD)

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

Clear

77°F

25°C

Humidity 47%
Wind Speed W 8 MPH
Barometer 30.09 in (1018.96 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 19 Mar 02:00 PM PDT
Extended Forecast for

2 Miles NNW Castro Valley CA

Heat Advisory March 19, 02:22pm until March 20, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory March 19, 02:22pm until March 20, 08:00pm

    NOW until 8:00pm Fri

    Heat Advisory

  • This Afternoon

    High: 91 °F

    Sunny

  • Tonight

    Tonight: Clear, with a low around 58. Light and variable wind.

    Low: 58 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 91. Calm wind becoming west around 6 mph in the afternoon.

    High: 91 °F

    Sunny

  • Friday Night

    Friday Night: Increasing clouds, with a low around 56. Southwest wind around 5 mph.

    Low: 56 °F

    Increasing
    Clouds

  • Saturday

    Saturday: Mostly sunny, with a high near 80. West wind 3 to 8 mph.

    High: 80 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 51.

    Low: 51 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 78.

    High: 78 °F

    Sunny

  • Sunday Night

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

    Low: 50 °F

    Mostly Clear

Detailed Forecast

This Afternoon
Sunny, with a high near 91. North wind around 6 mph.
Tonight
Clear, with a low around 58. Light and variable wind.
Friday
Sunny, with a high near 91. Calm wind becoming west around 6 mph in the afternoon.
Friday Night
Increasing clouds, with a low around 56. Southwest wind around 5 mph.
Saturday
Mostly sunny, with a high near 80. West wind 3 to 8 mph.
Saturday Night
Mostly clear, with a low around 51.
Sunday
Sunny, with a high near 78.
Sunday Night
Mostly clear, with a low around 50.
Monday
Sunny, with a high near 77.
Monday Night
Mostly clear, with a low around 52.
Tuesday
Sunny, with a high near 77.
Tuesday Night
Mostly clear, with a low around 50.
Wednesday
Sunny, with a high near 73.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles NNW Castro Valley CA
 37.73°N 122.08°W (Elev. 614 ft)
2:08 pm PDT Mar 19, 2026
2pm PDT Mar 19, 2026-6pm PDT Mar 25, 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