Pacific Storm System Across the West; Fire Weather Concerns in the Southeast

A Pacific storm system will bring strong winds and low elevation rain to much of the West Coast, and heavy high elevation mountain snow to the Sierra-Nevada through Wednesday. Fire weather concerns will continue into Tuesday across the Mid-South and Southeast as gusty winds and dry conditions persist. Read More >

Current conditions at

Hayward, Hayward Air Terminal (KHWD)

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

light rain,mist

53°F

12°C

Humidity 96%
Wind Speed N 0 MPH
Barometer 29.88 in (1011.85 mb)
Dewpoint 52°F (11°C)
Visibility 2.00 mi
Last update 21 Apr 03:25 AM PDT
Extended Forecast for

2 Miles WNW Castro Valley CA

  • Overnight

    Overnight: Rain, mainly before 5am, then showers after 5am.  Low around 53. South wind around 6 mph.  Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 53 °F

    Rain

  • Tuesday

    Tuesday: 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

  • Tuesday Night

    Tuesday Night: 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.

    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

Detailed Forecast

Overnight
Rain, mainly before 5am, then showers after 5am. Low around 53. South wind around 6 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Tuesday
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.
Tuesday Night
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.
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.
Basemap Options
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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
3am 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