2026 Compare Cities Climate:
Sun City, AZ vs Castro Valley, CA

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Highlights
- Castro Valley has 129.0% more rainy days than Sun City.
- Castro Valley has 10.9% less Sunny Days than Sun City.
- On the BestPlaces comfort index, Castro Valley scores 19.4% better than Sun City
 Sun City, AZCastro Valley, CAUnited States
 Rainfall  Unlock2138
 Snowfall0  Unlock28
 Precipitation  Unlock66106
 Sunny293  Unlock205
 Avg. July High  Unlock7686
 Avg. Jan. Low43  Unlock22
 Comfort Index (higher=better)  Unlock8.67
 UV Index6.4  Unlock4.3
 Elevation  Unlock1612443
Reviews for Sun City    9 Reviews

Over 12 years ago

We are so happy to live in Sun City. The Sun City Recreation Centers are available for use by all citizens who pay the yearly membership (required). There are many  More

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Over 16 years ago

Sun City, Arizona is a great place to live either year round or as a snow bird. Sun City has wonderful recreation centers (8 and counting) with over 150 clubs with  More

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Over 16 years ago

I lived in Payson, but moved away searching for some Culture, drama, & musicals. I really enjoyed the hiking, and ourdoors living in Payson. After I recuperated from  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 12 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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