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 9 MPH
Barometer 29.78 in (1008.47 mb)
Dewpoint 55°F (13°C)
Visibility 8.00 mi
Last update 04 Aug 12:00 AM PDT
Extended Forecast for

2 Miles SW Castro Valley CA

  • Overnight

    Overnight: Mostly clear, with a low around 59. Calm wind.

    Low: 59 °F

    Mostly Clear

  • Tuesday

    Tuesday: Widespread haze before 8am. Sunny, with a high near 88. Calm wind becoming west 5 to 9 mph in the morning.

    High: 88 °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: Partly sunny, then gradually becoming sunny, with a high near 86. Calm wind becoming west 5 to 9 mph in the afternoon.

    High: 86 °F

    Becoming
    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 60. West wind 5 to 8 mph becoming calm  after midnight.

    Low: 60 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 84.

    High: 84 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 61.

    Low: 61 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 87.

    High: 87 °F

    Mostly Sunny

  • Friday Night

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

    Low: 62 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly clear, with a low around 59. Calm wind.
Tuesday
Widespread haze before 8am. Sunny, with a high near 88. 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
Partly sunny, then gradually becoming sunny, with a high near 86. Calm wind becoming west 5 to 9 mph in the afternoon.
Wednesday Night
Mostly clear, with a low around 60. West wind 5 to 8 mph becoming calm after midnight.
Thursday
Mostly sunny, with a high near 84.
Thursday Night
Partly cloudy, with a low around 61.
Friday
Mostly sunny, with a high near 87.
Friday Night
Partly cloudy, with a low around 62.
Saturday
Mostly sunny, with a high near 87.
Saturday Night
Partly cloudy, with a low around 64.
Sunday
Sunny, with a high near 82.
Sunday Night
Partly cloudy, with a low around 60.
Monday
Mostly sunny, with a high near 78.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SW Castro Valley CA
 37.69°N 122.07°W (Elev. 197 ft)
11:27 pm PDT Aug 3, 2026
12am PDT Aug 4, 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