2025 Compare Cities Climate:
Friday Harbor, WA vs Mercer Island, WA

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Highlights
- Mercer Island has 46.3% more rainy days than Friday Harbor.
- Mercer Island has 0.6% less Sunny Days than Friday Harbor.
- On the BestPlaces comfort index, Mercer Island scores 4.2% better than Friday Harbor
 Friday Harbor, WAMercer Island, WAUnited States
 Rainfall  Unlock3938
 Snowfall4  Unlock28
 Precipitation  Unlock153106
 Sunny157  Unlock205
 Avg. July High  Unlock7686
 Avg. Jan. Low36  Unlock22
 Comfort Index (higher=better)  Unlock7.57
 UV Index2.6  Unlock4.3
 Elevation  Unlock3352443
Reviews for Friday Harbor    2 Reviews

Beautiful place to retire and live, but a very expensive area to buy property and maintain. Services are limited and labor is in big shortage. So be prepared to pay up  More

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I lived on the Island for a couple of the winter months in 2007. I house sat a beautiful home on acreage with a view of the water. The Island is very quiet during the  More

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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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