2026 Compare Cities Climate:
Castro Valley, CA vs Plano, TX

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Highlights
- Plano has 92.0% more rainy days than Castro Valley.
- Plano has 12.3% less Sunny Days than Castro Valley.
- On the BestPlaces comfort index, Plano scores 16.3% worse than Castro Valley
 Castro Valley, CAPlano, TXUnited States
 Rainfall  Unlock4138
 Snowfall0  Unlock28
 Precipitation  Unlock80106
 Sunny261  Unlock205
 Avg. July High  Unlock9486
 Avg. Jan. Low42  Unlock22
 Comfort Index (higher=better)  Unlock7.27
 UV Index5.4  Unlock4.3
 Elevation  Unlock6662443
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 Plano    42 Reviews

I had lived in Plano for over 30 years. It is where I bought my first home as a single woman, where I married, and where I raised my children. I was fortunate enough  More

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We have lived in Plano for 20 years. It has been consistently rated very highly in surveys of best places to live in the US. Pros are the parks system; which includes  More

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Over 5 years ago

I've lived here for a while now. It's wonderful here. There's a ton to do, great jobs, great parks, and pretty good school. It's the perfect  More

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