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

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Highlights
- Mercer Island has 170.3% more rainy days than Brentwood.
- Mercer Island has 40.0% less Sunny Days than Brentwood.
- On the BestPlaces comfort index, Mercer Island scores 11.8% worse than Brentwood
 Brentwood, CAMercer Island, WAUnited States
 Rainfall  Unlock3938
 Snowfall0  Unlock28
 Precipitation  Unlock153106
 Sunny260  Unlock205
 Avg. July High  Unlock7686
 Avg. Jan. Low40  Unlock22
 Comfort Index (higher=better)  Unlock7.57
 UV Index5.4  Unlock4.3
 Elevation  Unlock3352443
Reviews for Brentwood    6 Reviews

Brentwood, 50 miles east of San Francisco, has a great climate. We are in a valley, east of Mount Diablo. We get a few weeks of pretty hot days - 100+, but the rest of  More

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Over 15 years ago

I love living in Brentwood. Our city planners and workers have done an excellent job in creating a beautiful city filled with trees, parks, well- planned communities,  More

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We moved to a new “Active Adults” (over 55) housing development in Brentwood about 6 years ago. The location is great if you like to fish, go pleasure-boating, or water  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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