2025 Compare Cities Climate:
Roy, WA vs Mercer Island, WA

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Highlights
- Mercer Island has 14.2% less rainy days than Roy.
- Mercer Island has 9.9% more Sunny Days than Roy.
- On the BestPlaces comfort index, Mercer Island scores 5.6% better than Roy
 Roy, WAMercer Island, WAUnited States
 Rainfall  Unlock3938
 Snowfall6  Unlock28
 Precipitation  Unlock153106
 Sunny142  Unlock205
 Avg. July High  Unlock7686
 Avg. Jan. Low35  Unlock22
 Comfort Index (higher=better)  Unlock7.57
 UV Index2.6  Unlock4.3
 Elevation  Unlock3352443
Reviews for Roy    0 Reviews

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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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