2025 Compare Cities Climate:
Mercer Island, WA vs Portland, OR

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Highlights
- Portland has 9.2% more rainy days than Mercer Island.
- Portland has 7.7% less Sunny Days than Mercer Island.
- On the BestPlaces comfort index, Portland scores 0.0% worse than Mercer Island
 Mercer Island, WAPortland, ORUnited States
 Rainfall  Unlock4338
 Snowfall5  Unlock28
 Precipitation  Unlock156106
 Sunny156  Unlock205
 Avg. July High  Unlock8186
 Avg. Jan. Low37  Unlock22
 Comfort Index (higher=better)  Unlock7.57
 UV Index2.6  Unlock4.3
 Elevation  Unlock332443
Reviews for Mercer Island    4 Reviews

Mercer Island is a wonderful family community. It feels much more "small town" than a city even though it has a population of 20,000+. People say hello and watch out  More

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Mercer Island is a suburb of Seattle, located on an island in Lake Washington. The best thing about Mercer Island is its strategically central location relative to the  More

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Mercer Island is a suburb of Seattle, located on an island in Lake Washington. The best thing about Mercer Island is its strategically central location relative to the  More

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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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