2026 Compare Cities Climate:
Castro Valley, CA vs Rapid City, SD

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Highlights
- Rapid City has 14.6% less rainy days than Castro Valley.
- Rapid City has 13.4% less Sunny Days than Castro Valley.
- On the BestPlaces comfort index, Rapid City scores 18.6% worse than Castro Valley
 Castro Valley, CARapid City, SDUnited States
 Rainfall  Unlock1838
 Snowfall0  Unlock28
 Precipitation  Unlock85106
 Sunny261  Unlock205
 Avg. July High  Unlock8586
 Avg. Jan. Low42  Unlock22
 Comfort Index (higher=better)  Unlock77
 UV Index5.4  Unlock4.3
 Elevation  Unlock32412443
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 Rapid City    31 Reviews

I have lived in this city for the last three and half years and I can't stand it!! Let me spell it out for you, but to be fair, let me give you the Pros first:  More

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Unless you made your pension out of state or already bought a home you can't afford to liver there. Rapid City is gray in winter.  More

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Over 5 years ago

I've lived in the city 5 years a loved  More

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