National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Atmospheric River Continues Areas of Heavy Rain and Snow for California This Weekend

An atmospheric river will continue to bring gusty winds, moderate to heavy rainfall, and potential flooding to southern California and the southern Great Basin through Sunday. Periods of heavy snow will continue as well above 7,000 feet over the Sierra Nevada mountains associated with this atmospheric river. Read More >

Current conditions at

Hayward, Hayward Air Terminal (KHWD)

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

Rain

58°F

14°C

Humidity 86%
Wind Speed WSW 8 MPH
Barometer 29.77 in (1008.13 mb)
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Last update 15 Nov 10:54 PM PST
Extended Forecast for

2 Miles SW Castro Valley CA

  • Tonight

    Tonight: Rain. Low around 56. South wind around 7 mph. Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.

    Low: 56 °F

    Rain

  • Sunday

    Sunday: Rain. High near 62. South wind 7 to 10 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    High: 62 °F

    Rain

  • Sunday Night

    Sunday Night: Rain and possibly a thunderstorm before 7pm, then showers and possibly a thunderstorm after 7pm. Low around 53. South southeast wind 10 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 53 °F

    Showers

  • Monday

    Monday: Rain likely, mainly before 4pm. Mostly cloudy, with a high near 59. West southwest wind around 11 mph, with gusts as high as 22 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 59 °F

    Rain Likely

  • Monday Night

    Monday Night: A 20 percent chance of rain before 10pm. Partly cloudy, with a low around 47. North northeast wind 3 to 7 mph.

    Low: 47 °F

    Slight Chance
    Rain then
    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 60.

    High: 60 °F

    Mostly Sunny

  • Tuesday Night

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

    Low: 47 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 61.

    High: 61 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: A chance of rain, mainly after 10pm. Mostly cloudy, with a low around 50.

    Low: 50 °F

    Chance Rain

Detailed Forecast

Tonight
Rain. Low around 56. South wind around 7 mph. Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.
Sunday
Rain. High near 62. South wind 7 to 10 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Sunday Night
Rain and possibly a thunderstorm before 7pm, then showers and possibly a thunderstorm after 7pm. Low around 53. South southeast wind 10 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
Monday
Rain likely, mainly before 4pm. Mostly cloudy, with a high near 59. West southwest wind around 11 mph, with gusts as high as 22 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Monday Night
A 20 percent chance of rain before 10pm. Partly cloudy, with a low around 47. North northeast wind 3 to 7 mph.
Tuesday
Mostly sunny, with a high near 60.
Tuesday Night
Partly cloudy, with a low around 47.
Wednesday
Mostly sunny, with a high near 61.
Wednesday Night
A chance of rain, mainly after 10pm. Mostly cloudy, with a low around 50.
Thursday
A chance of rain. Mostly cloudy, with a high near 60.
Thursday Night
A chance of rain. Mostly cloudy, with a low around 49.
Friday
Mostly sunny, with a high near 61.
Friday Night
Partly cloudy, with a low around 47.
Saturday
Sunny, with a high near 64.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SW Castro Valley CA
 37.69°N 122.1°W (Elev. 174 ft)
Last Update:
8:03 pm PST Nov 15, 2025
Forecast Valid:
11pm PST Nov 15, 2025-6pm PST Nov 22, 2025
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation