Mercer Island Weather in July

Mercer Island in July averages 25°C (77°F) during the day and 14°C (57°F) at night. This is the driest month of the year, and part of the summer season.

Rainfall in Mercer Island in July

Expect fewer clouds and less rain as the month goes on. This makes it an ideal time for outdoor activities. Climate statistics over the past 30 years suggest around 4 days of rain, with 15 mm (0.6 in) average for the month. The occasional light shower is possible, but rain is rarely an issue this month.

Temperature in Mercer Island in July

The excellent temperature in Mercer Island in July makes it a solid month to visit, with 25°C (77°F) during the day and 14°C (57°F) at night. July is part of summer. Overall, the month follows a fairly predictable daily temperature pattern. Nights drop to around 14°C (57°F), which is noticeably cooler than the daytime. A light jacket for the evening is a sensible addition, and the cool nights tend to make sleeping comfortable.

Sunshine in Mercer Island in July

Enjoy a sunny month with about 312 hours of sunshine, the clear skies make Mercer Island even more beautiful.

Wind Speed in Mercer Island in July

July sees wind speeds averaging 4 m/s (8 knots). You'll experience variable conditions with moderate winds that create small waves on water and keep branches moving. Conditions range from light winds to moderate breezes throughout the month.

If you favor pleasant temperatures and minimal rainfall, July is one of the best months to visit Mercer Island.