2025 Compare Cities Climate:
Mercer Island, WA vs Cupertino, CA

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Highlights
- Cupertino has 54.1% less rainy days than Mercer Island.
- Cupertino has 69.9% more Sunny Days than Mercer Island.
- On the BestPlaces comfort index, Cupertino scores 16.0% better than Mercer Island
 Mercer Island, WACupertino, CAUnited States
 Rainfall  Unlock1838
 Snowfall5  Unlock28
 Precipitation  Unlock61106
 Sunny156  Unlock205
 Avg. July High  Unlock8186
 Avg. Jan. Low37  Unlock22
 Comfort Index (higher=better)  Unlock8.77
 UV Index2.6  Unlock4.3
 Elevation  Unlock2362443
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 Cupertino    7 Reviews

I love this city. Cupertino has everything to offer. We have the best schools, weather, health care, and everything is close by. Absolutely everything is here.   More

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Over 3 years ago

I’ve lived here for 24 years. Cupertino is totally convenient. Literally library, parks, grocery stores, all shopping, bakery’s, restaurants, all within walking  More

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I look at the pros and cons listed here about Cupertino and I just laugh. I’ve lived here for 21 years. Here’s what I can tell you.The pros:-The weather is good year  More

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