Weather Forecast and Radar for Castro Valley, California

Weather in Castro Valley, CA

Castro Valley, California, United States has a mild Mediterranean climate, meaning that the weather is generally mild year-round. In the summer, temperatures typically range from the high 50s (Fahrenheit) to the high 80s. Winter temperatures vary from the low 40s to the mid-60s. In the fall and spring months, temperatures range from the mid-50s to the mid-70s.

Rainfall is frequent throughout the year, though most of it occurs during the winter months. On average, Castro Valley receives about 24 inches of rain per year. Snowfall is rare in Castro Valley, though it can occur at higher elevations.

The area also experiences occasional droughts, as well as occasional spells of hot, dry weather. In the summer, temperatures can climb as high as the mid-90s. These hot, dry spells can last for several weeks before giving way to cooler temperatures.

Overall, Castro Valley has mild weather year-round and is a great place to visit.

Fast Facts About Castro Valley, CA

As of 2020, the city population is 64392.

Major Cities Nearby Castro Valley, CA

This map shows the current & 7-day weather forecast, weather alerts, and weather radar for Castro Valley, California.