Critical Fire Weather Conditions Continue; Pacific Storm to Bring Heavy Snow to the Sierra-Nevada

Critical fire weather conditions are forecast for the Southern Plains and portions of Florida through Thursday, as gusty winds and dry conditions return to the region. A Pacific storm system will bring strong winds and low elevation rain to much of the West Coast and central Great Basin, and heavy high elevation mountain snow to the Sierra-Nevada through Wednesday. Read More >

Current conditions at

Hayward, Hayward Air Terminal (KHWD)

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

Mostly Cloudy

55°F

13°C

Humidity 93%
Wind Speed SE 6 MPH
Barometer 29.9 in (1012.53 mb)
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Last update 21 Apr 08:20 AM PDT
Extended Forecast for

2 Miles WNW Castro Valley CA

  • Today

    Today: Showers and possibly a thunderstorm before 3pm, then a chance of showers and thunderstorms between 3pm and 5pm, then rain likely and possibly a thunderstorm after 5pm.  High near 62. West southwest wind 6 to 10 mph, with gusts as high as 18 mph.  Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    High: 62 °F

    Showers

  • Tonight

    Tonight: A chance of rain before midnight, then a chance of rain after 2am.  Mostly cloudy, with a low around 50. Southwest wind 6 to 9 mph.  Chance of precipitation is 50%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 50 °F

    Chance Rain

  • Wednesday

    Wednesday: A 40 percent chance of rain, mainly before 11am.  Mostly sunny, with a high near 64. South southwest wind 5 to 7 mph becoming west in the afternoon.  New precipitation amounts of less than a tenth of an inch possible.

    High: 64 °F

    Chance Rain

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 47. West northwest wind 3 to 8 mph.

    Low: 47 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 69. Calm wind becoming west 5 to 7 mph in the afternoon.

    High: 69 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 49.

    Low: 49 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 70.

    High: 70 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 51.

    Low: 51 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 67.

    High: 67 °F

    Partly Sunny

Detailed Forecast

Today
Showers and possibly a thunderstorm before 3pm, then a chance of showers and thunderstorms between 3pm and 5pm, then rain likely and possibly a thunderstorm after 5pm. High near 62. West southwest wind 6 to 10 mph, with gusts as high as 18 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Tonight
A chance of rain before midnight, then a chance of rain after 2am. Mostly cloudy, with a low around 50. Southwest wind 6 to 9 mph. Chance of precipitation is 50%. New precipitation amounts between a tenth and quarter of an inch possible.
Wednesday
A 40 percent chance of rain, mainly before 11am. Mostly sunny, with a high near 64. South southwest wind 5 to 7 mph becoming west in the afternoon. New precipitation amounts of less than a tenth of an inch possible.
Wednesday Night
Mostly clear, with a low around 47. West northwest wind 3 to 8 mph.
Thursday
Sunny, with a high near 69. Calm wind becoming west 5 to 7 mph in the afternoon.
Thursday Night
Partly cloudy, with a low around 49.
Friday
Mostly sunny, with a high near 70.
Friday Night
Mostly cloudy, with a low around 51.
Saturday
Partly sunny, with a high near 67.
Saturday Night
Mostly cloudy, with a low around 52.
Sunday
Mostly sunny, with a high near 68.
Sunday Night
Partly cloudy, with a low around 50.
Monday
Mostly sunny, with a high near 70.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles WNW Castro Valley CA
 37.73°N 122.11°W (Elev. 397 ft)
12:31 am PDT Apr 21, 2026
8am PDT Apr 21, 2026-6pm PDT Apr 27, 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