Warm-summer Mediterranean
Mercer Island, Washington
King County, Washington · Population 25k · 338 ft elevation
Living in Mercer Island
Mercer Island has a warm-summer mediterranean climate: pleasantly warm summers (July highs around 76°F) and mild winters (January lows around 36°F).
Precipitation is wet at about 36″ a year, and it sees only a dusting of snow (4″ a season).
Skies are gray (48% of possible sunshine). Muggy weather is occasional (5 days a year).
Air quality is moderate: a median AQI of 43 and virtually no unhealthy-air days.
There is plenty to explore outdoors around Mercer Island: about 14% of the land within 30 miles is public (parks, national forest and the like), and the terrain rises and falls about 2,500 ft around town.
Mercer Island at a glance
- Population
- 25k
- Elevation
- 338 ft
- Average daily high
- 61°F24th percentile
- Average daily low
- 45°F47th percentile
- Annual precipitation
- 36″28th percentile
- Annual snowfall
- 4″37th percentile
- Sunshine hours per year
- 2,244 hrs2th percentile
- Median AQI
- 4356th percentile
- Median home value
- $1.9M99th percentile
- Median rent
- $2,464/mo95th percentile
- Median household income
- $202k98th percentile
- Property tax rate
- 0.53%11th percentile
- Top state income-tax rate
- 0.0%
- Sales tax (state + local)
- 9.4%
- Unemployment rate
- 2.5%
- Homes with broadband
- 96%82th percentile
- Walkability index
- 10.771th percentile
- Average commute
- 25 min
- Math proficiency (8th grade)
- 81%93th percentile
- Reading proficiency (8th grade)
- 82%
- Violent crime rate
- 67 per 100k21th percentile
- Property crime rate
- 953 per 100k
- Overall natural-hazard risk
- 10093th percentile
- Outdoor access
- 8282th percentile
- Public land within 10 miles
- 3%
- Public land within 30 miles
- 14%
- Mountain relief within 30 miles
- 2,526 ft
Climate by month
| Month | High | Low | Precipitation | Snow | Sunshine |
|---|---|---|---|---|---|
| Jan | 48°F | 36°F | 5.2″ | 1.1″ | 86 hrs |
| Feb | 50°F | 36°F | 3.7″ | 0.7″ | 122 hrs |
| Mar | 54°F | 38°F | 3.9″ | 0.1″ | 148 hrs |
| Apr | 59°F | 43°F | 2.9″ | — | 189 hrs |
| May | 66°F | 48°F | 2.0″ | — | 244 hrs |
| Jun | 70°F | 53°F | 1.2″ | — | 256 hrs |
| Jul | 76°F | 57°F | 0.6″ | — | 329 hrs |
| Aug | 76°F | 57°F | 0.8″ | — | 303 hrs |
| Sep | 71°F | 53°F | 1.4″ | — | 234 hrs |
| Oct | 60°F | 45°F | 3.5″ | — | 157 hrs |
| Nov | 52°F | 39°F | 5.8″ | 0.2″ | 96 hrs |
| Dec | 47°F | 35°F | 5.5″ | 1.5″ | 81 hrs |
Near Mercer Island
- Newcastle, WA · 13k
- Bellevue, WA · 151k
- Medina, WA · 2.9k
- Clyde Hill, WA · 3.1k
- Bryn Mawr-Skyway, WA · 18k
- Boulevard Park, WA · 4.3k
- Renton, WA · 105k
- Tukwila, WA · 21k
Largest places in Washington
- Seattle, WA · 741k
- Spokane, WA · 229k
- Tacoma, WA · 220k
- Vancouver, WA · 193k
- Kent, WA · 135k
- Everett, WA · 111k
- Spokane Valley, WA · 105k
- Federal Way, WA · 99k
Sources: NOAA climate normals, NASA POWER, EPA air quality, U.S. Census Bureau, FEMA, FBI, EPA walkability and EDFacts. Methodology