2025 Compare Cities Climate:
Mercer Island, WA vs Foster City, CA

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Highlights
- Foster City has 51.3% less rainy days than Mercer Island.
- Foster City has 67.9% more Sunny Days than Mercer Island.
- On the BestPlaces comfort index, Foster City scores 16.0% better than Mercer Island
 Mercer Island, WAFoster City, CAUnited States
 Rainfall  Unlock1938
 Snowfall5  Unlock28
 Precipitation  Unlock62106
 Sunny156  Unlock205
 Avg. July High  Unlock7886
 Avg. Jan. Low37  Unlock22
 Comfort Index (higher=better)  Unlock8.77
 UV Index2.6  Unlock4.3
 Elevation  Unlock72443
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 Foster City    4 Reviews

Over 17 years ago

Built on lagoons, great climate, good schools, lots of soccer and other sports for kids, plenty of parking and  More

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Over 18 years ago

A great city to raise a family, safe, great weather around the year, good schools and plenty of recreation. But only if you can afford the hight cost of  More

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Landlords are able to command and receive high rent due to the following attributes: safety, weather and cleanliness of Foster City. The lagoon, waterways and gardens  More

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