Find the Best Places in the United States

Compare Cost of Living, Education, Income, Population, and More.

Current Weather Conditions for Castro Valley, CA

Mostly clear. Low around 39, with temperatures rising to around 42 overnight. West southwest wind 3 to 9 mph.
42°F

Conditions

Wind: 9 mph W
Humidity: 81%
Probability of Precipitation: 4%

Hourly Forcast (next 12 hours)

8 AM 9 AM 10 AM 11 AM 12 PM 1 PM 2 PM 3 PM 4 PM 5 PM 6 PM 7 PM 8 PM
42° 42° 41° 42° 42° 42° 42° 41° 42° 45° 47° 50° 51°

Upcoming Week

Day Forecast High Low
Overnight
Mostly Clear
Mostly clear. Low around 39, with temperatures rising to around 42 overnight. West southwest wind 3 to 9 mph.
54°F 40°F
Wednesday
Sunny
Sunny. High near 54, with temperatures falling to around 51 in the afternoon. South southwest wind 2 to 6 mph.
54°F 40°F
Wednesday Night
Partly Cloudy then Light Rain Likely
Rain likely after 4am. Partly cloudy. Low around 39, with temperatures rising to around 42 overnight. North northeast wind around 3 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch possible.
54°F 40°F
Thursday
Light Rain
Rain. Cloudy, with a high near 54. East wind 3 to 9 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
54°F 40°F
Thursday Night
Light Rain
Rain. Mostly cloudy, with a low around 45. South southwest wind 9 to 14 mph, with gusts as high as 25 mph. Chance of precipitation is 100%. New rainfall amounts between a tenth and quarter of an inch possible.
54°F 40°F
Friday
Chance Light Rain
A chance of rain before 4pm. Mostly sunny, with a high near 54. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.
54°F 40°F
Friday Night
Mostly Clear
Mostly clear, with a low around 37.
54°F 40°F
Saturday
Sunny
Sunny, with a high near 55.
54°F 40°F
Saturday Night
Mostly Clear
Mostly clear, with a low around 36.
54°F 40°F
Sunday
Sunny
Sunny, with a high near 54.
54°F 40°F
Sunday Night
Mostly Clear
Mostly clear, with a low around 37.
54°F 40°F
Monday
Sunny
Sunny, with a high near 56.
54°F 40°F
Monday Night
Partly Cloudy
Partly cloudy, with a low around 39.
54°F 40°F
Tuesday
Slight Chance Light Rain
A slight chance of rain after 10am. Mostly sunny, with a high near 55.
54°F 40°F
Data provided by weather.gov