2025 Compare Cities Climate:
Irvine, CA vs Castro Valley, CA

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Highlights
- Castro Valley has 65.1% more rainy days than Irvine.
- Castro Valley has 7.1% less Sunny Days than Irvine.
- On the BestPlaces comfort index, Castro Valley scores 7.5% worse than Irvine
 Irvine, CACastro Valley, CAUnited States
 Rainfall  Unlock2138
 Snowfall0  Unlock28
 Precipitation  Unlock66106
 Sunny281  Unlock205
 Avg. July High  Unlock7686
 Avg. Jan. Low46  Unlock22
 Comfort Index (higher=better)  Unlock8.67
 UV Index5.9  Unlock4.3
 Elevation  Unlock1612443
Reviews for Irvine    42 Reviews

We've lived in Irvine since '87. We have raised two children within the ISUD. Both are grown up. Sure, there have been many changes since then.. the City has  More

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I've lived in Irvine for 2 years and in Orange County for 10 so I'm pretty familiar with the area by now and all it has to offer. Perhaps my review of this place has  More

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I wouldn't live elsewhere. I originally moved to Irvine in 2002 from the Midwest, not knowing what it even was. I left and moved around a great deal locally in OC,  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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