Extreme Heat in the Southwest; Severe Weather in the Northern Plains; Heavy Rain in the East

Extreme heat continues across the Southwest as temperatures may top 120 degrees. The heat may expand across the West and south-central U.S. into the middle of the month. Severe thunderstorms capable of severe wind gusts and large hail will be the primary hazards today across the northern Plains into the upper Midwest. Rainfall could be locally heavy across the Eastern U.S. today. Read More >

Current conditions at

Hayward, Hayward Air Terminal (KHWD)

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

Clear

63°F

17°C

Humidity 77%
Wind Speed NW 11 MPH
Barometer 29.77 in (1008.13 mb)
Dewpoint 55°F (13°C)
Visibility 8.00 mi
Last update 03 Aug 11:20 PM PDT
Extended Forecast for

2 Miles WNW Castro Valley CA

  • Tonight

    Tonight: Mostly clear, with a low around 58. Calm wind.

    Low: 58 °F

    Mostly Clear

  • Tuesday

    Tuesday: Widespread haze before 8am. Sunny, with a high near 87. Calm wind becoming west 5 to 9 mph in the morning.

    High: 87 °F

    Haze then
    Sunny

  • Tuesday Night

    Tuesday Night: Increasing clouds, with a low around 59. West northwest wind 5 to 7 mph becoming calm  in the evening.

    Low: 59 °F

    Increasing
    Clouds

  • Wednesday

    Wednesday: Mostly cloudy through mid morning, then gradual clearing, with a high near 84. Calm wind becoming west 5 to 9 mph in the afternoon.

    High: 84 °F

    Becoming
    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 60. West wind 5 to 9 mph becoming calm  after midnight.

    Low: 60 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 82.

    High: 82 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 60.

    Low: 60 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 85.

    High: 85 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 62.

    Low: 62 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 58. Calm wind.
Tuesday
Widespread haze before 8am. Sunny, with a high near 87. Calm wind becoming west 5 to 9 mph in the morning.
Tuesday Night
Increasing clouds, with a low around 59. West northwest wind 5 to 7 mph becoming calm in the evening.
Wednesday
Mostly cloudy through mid morning, then gradual clearing, with a high near 84. Calm wind becoming west 5 to 9 mph in the afternoon.
Wednesday Night
Mostly clear, with a low around 60. West wind 5 to 9 mph becoming calm after midnight.
Thursday
Mostly sunny, with a high near 82.
Thursday Night
Partly cloudy, with a low around 60.
Friday
Mostly sunny, with a high near 85.
Friday Night
Partly cloudy, with a low around 62.
Saturday
Mostly sunny, with a high near 85.
Saturday Night
Partly cloudy, with a low around 63.
Sunday
Mostly sunny, with a high near 80.
Sunday Night
Partly cloudy, with a low around 60.
Monday
Mostly sunny, with a high near 76.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles WNW Castro Valley CA
 37.71°N 122.11°W (Elev. 397 ft)
11:27 pm PDT Aug 3, 2026
11pm PDT Aug 3, 2026-6pm PDT Aug 10, 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