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

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Highlights
- Mercer Island has 117.8% more rainy days than Cupertino.
- Mercer Island has 41.1% less Sunny Days than Cupertino.
- On the BestPlaces comfort index, Mercer Island scores 13.8% worse than Cupertino
 Cupertino, CAMercer Island, WAUnited States
 Rainfall  Unlock3938
 Snowfall0  Unlock28
 Precipitation  Unlock153106
 Sunny265  Unlock205
 Avg. July High  Unlock7686
 Avg. Jan. Low41  Unlock22
 Comfort Index (higher=better)  Unlock7.57
 UV Index5.1  Unlock4.3
 Elevation  Unlock3352443
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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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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