2026 Compare Cities Climate:
Castro Valley, CA vs Avondale, AZ

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Highlights
- Avondale has 56.8% less rainy days than Castro Valley.
- Avondale has 11.5% more Sunny Days than Castro Valley.
- On the BestPlaces comfort index, Avondale scores 16.3% worse than Castro Valley
 Castro Valley, CAAvondale, AZUnited States
 Rainfall  Unlock938
 Snowfall0  Unlock28
 Precipitation  Unlock32106
 Sunny261  Unlock205
 Avg. July High  Unlock10686
 Avg. Jan. Low42  Unlock22
 Comfort Index (higher=better)  Unlock7.27
 UV Index5.4  Unlock4.3
 Elevation  Unlock9742443
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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Reviews for Avondale    3 Reviews

Over 16 years ago

My children have attended Canyon Breeze for the last couple of years. In that time a new principal has taken over. Bullying, swearing, and children running around  More

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Over 19 years ago

I am a young married woman with a family. I love Avondale for so many reasons. There is everything I need nearby and I rarely have to venture out of my area. Shopping,  More

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Over 19 years ago

The valley is in serious need of mass transit. Currently a light rail is being built, but it is slated to only connect Phoenix to Tempe. Eventually it will connect more  More

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