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

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Highlights
- Vacaville has 18.3% more rainy days than Castro Valley.
- Vacaville has 0.4% less Sunny Days than Castro Valley.
- On the BestPlaces comfort index, Vacaville scores 4.7% worse than Castro Valley
 Castro Valley, CAVacaville, CAUnited States
 Rainfall  Unlock2538
 Snowfall0  Unlock28
 Precipitation  Unlock65106
 Sunny261  Unlock205
 Avg. July High  Unlock9386
 Avg. Jan. Low42  Unlock22
 Comfort Index (higher=better)  Unlock8.27
 UV Index5.4  Unlock4.3
 Elevation  Unlock1742443
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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Reviews for Vacaville    10 Reviews

I am a former Bay Area resident who moved to Vacaville to escape the ridiculous cost of living in the Bay. Now, if you are coming from the Bay, this place can seem more  More

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Over 6 years ago

It’s not a bad or dangerous place to live but I believe it doesn’t deserve the 5 stars most people are giving it. I have no idea where these people lived before moving  More

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If you enjoy a sophisticated urban environment, if you're single, if you're highly educated and appreciate access to continuing higher education at the post-graduate  More

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