2025 Compare Cities Climate:
Sunnyside, WA vs Castro Valley, CA

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Highlights
- Castro Valley has 159.8% more rainy days than Sunnyside.
- Castro Valley has 28.6% more Sunny Days than Sunnyside.
- On the BestPlaces comfort index, Castro Valley scores 14.7% better than Sunnyside
 Sunnyside, WACastro Valley, CAUnited States
 Rainfall  Unlock2138
 Snowfall10  Unlock28
 Precipitation  Unlock66106
 Sunny203  Unlock205
 Avg. July High  Unlock7686
 Avg. Jan. Low26  Unlock22
 Comfort Index (higher=better)  Unlock8.67
 UV Index2.6  Unlock4.3
 Elevation  Unlock1612443
Reviews for Sunnyside    1 Reviews

Sunnyside is approx 8 minutes away from Grandview. Sunnyside has a small shopping center called the mid-valley mall (whose anchor store is JCPenney, only one floor). The  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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