2025 Compare Cities Climate:
Foster City, CA vs Castro Valley, CA

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Highlights
- Castro Valley has 11.5% more rainy days than Foster City.
- Castro Valley has 0.4% less Sunny Days than Foster City.
- On the BestPlaces comfort index, Castro Valley scores 1.1% worse than Foster City
 Foster City, CACastro Valley, CAUnited States
 Rainfall  Unlock2138
 Snowfall0  Unlock28
 Precipitation  Unlock66106
 Sunny262  Unlock205
 Avg. July High  Unlock7686
 Avg. Jan. Low41  Unlock22
 Comfort Index (higher=better)  Unlock8.67
 UV Index4.9  Unlock4.3
 Elevation  Unlock1612443
Reviews for Foster City    4 Reviews

Over 17 years ago

Built on lagoons, great climate, good schools, lots of soccer and other sports for kids, plenty of parking and  More

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Over 18 years ago

A great city to raise a family, safe, great weather around the year, good schools and plenty of recreation. But only if you can afford the hight cost of  More

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Landlords are able to command and receive high rent due to the following attributes: safety, weather and cleanliness of Foster City. The lagoon, waterways and gardens  More

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Reviews for Castro Valley    7 Reviews

CURMUDGEON - THANK YOU for your post. The most important part of your comment is your second paragraph. "Hodge-Podge" is the correct word for a lot of Castro  More

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Over 11 years ago

Kind of rural but close to Oakland and San  More

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Castro Valley is the largest unincorporated "city" in the Bay Area. Over the years, several attempts have been made to incorporate, but they have all been defeated at  More

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