Hawaii and Guam Concerns; Severe Weather for the Plains; Heavy Snow for Sierra-Nevada

Heavy rainfall capable of causing flash flooding will continue to impact Hawaii through Monday. Severe thunderstorms and heavy rain are possible in parts of Texas and the southern Plains and the Upper Great Lakes. Heavy mountain snow continues in California's Sierra Nevada and rain with gusty winds to lower elevations. Super Typhoon Sinlaku will impact the Marianas through midweek. Read More >

Current conditions at

Hayward, Hayward Air Terminal (KHWD)

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

Rain

55°F

13°C

Humidity 76%
Wind Speed SW 8 MPH
Barometer 30.02 in (1016.59 mb)
Dewpoint 48°F (9°C)
Visibility 10.00 mi
Last update 12 Apr 09:20 PM PDT
Extended Forecast for

2 Miles NNW Castro Valley CA

  • Tonight

    Tonight: A slight chance of rain between 1am and 4am.  Mostly cloudy, with a low around 46. West southwest wind around 6 mph becoming calm  in the evening.  Chance of precipitation is 20%.

    Low: 46 °F

    Mostly Cloudy
    then Slight
    Chance Rain

  • Monday

    Monday: Mostly sunny, with a high near 63. Calm wind becoming west 5 to 9 mph in the afternoon.

    High: 63 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 47. Southwest wind 5 to 7 mph.

    Low: 47 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 62. West southwest wind 5 to 10 mph.

    High: 62 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 47. West southwest wind 6 to 10 mph.

    Low: 47 °F

    Mostly Clear

  • Wednesday

    Wednesday: Partly sunny, with a high near 64.

    High: 64 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 47.

    Low: 47 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 66.

    High: 66 °F

    Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 46.

    Low: 46 °F

    Clear

Detailed Forecast

Tonight
A slight chance of rain between 1am and 4am. Mostly cloudy, with a low around 46. West southwest wind around 6 mph becoming calm in the evening. Chance of precipitation is 20%.
Monday
Mostly sunny, with a high near 63. Calm wind becoming west 5 to 9 mph in the afternoon.
Monday Night
Mostly clear, with a low around 47. Southwest wind 5 to 7 mph.
Tuesday
Mostly sunny, with a high near 62. West southwest wind 5 to 10 mph.
Tuesday Night
Mostly clear, with a low around 47. West southwest wind 6 to 10 mph.
Wednesday
Partly sunny, with a high near 64.
Wednesday Night
Partly cloudy, with a low around 47.
Thursday
Sunny, with a high near 66.
Thursday Night
Clear, with a low around 46.
Friday
Sunny, with a high near 72.
Friday Night
Mostly clear, with a low around 46.
Saturday
Sunny, with a high near 74.
Saturday Night
Partly cloudy, with a low around 49.
Sunday
Mostly sunny, with a high near 72.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles NNW Castro Valley CA
 37.73°N 122.08°W (Elev. 614 ft)
6:36 pm PDT Apr 12, 2026
9pm PDT Apr 12, 2026-6pm PDT Apr 19, 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