2025 Compare Cities Climate:
Portland, OR vs Castro Valley, CA

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Highlights
- Castro Valley has 50.2% less rainy days than Portland.
- Castro Valley has 81.3% more Sunny Days than Portland.
- On the BestPlaces comfort index, Castro Valley scores 14.7% better than Portland
 Portland, ORCastro Valley, CAUnited States
 Rainfall  Unlock2138
 Snowfall3  Unlock28
 Precipitation  Unlock66106
 Sunny144  Unlock205
 Avg. July High  Unlock7686
 Avg. Jan. Low36  Unlock22
 Comfort Index (higher=better)  Unlock8.67
 UV Index3  Unlock4.3
 Elevation  Unlock1612443
Reviews for Portland    386 Reviews

I lived in Portland for 19 years (I've also lived in Boise, ID, the Bay Area, Austin, TX and now Nampa, ID). It drives me nuts when people try to give a large city a  More

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One of the best cities in America. Food scene is the best in the world. Weather is preferable over places where you have the same weather year round. I enjoy the  More

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I moved from Houston to Portland about a year ago. I remember reading the reviews on here and it making me second guess moving before I did, so I wanted to come back and  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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