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Mercer Island weather in July (Washington State, United States of America)

Looking to travel to Mercer Island in July? This guide provides all the details you need.

In Mercer Island, July is characterized by high temperatures and low rainfall. July falls within the summer season. Anticipate daytime temperatures around 25°C, while night temperatures can drop to 14°C.

Mercer Island in July usually receives low rainfall, averaging around 15 mm for the month. It's the month with the least rainfall. Whether you're keen on hiking, outdoor festivals, or just enjoying a walk in the park, this month provides a reliably dry backdrop for all your plans. Delving into the climate records from the past 30 years, one can predict that nearly 4 days of the month will see rainfall.

The days are predominantly sunny, with an estimated total of around 312 hours of sunshine. This amount of sunlight does not only brightens the days but also contributes to a cheerful ambiance in the area during this month.

If you favor pleasant temperatures and minimal rainfall, July is one of the better months to visit Mercer Island. June, July, August and September typically offer the most agreeable circumstances. On the other hand, January, February, March, November and December tend to be characterized by conditions that may not be as optimal.

For an in-depth look at the yearly conditions, visit our specialized Mercer Island climate page with graphs.

 

Mercer Island, monthly averages in July

Min TemperatureMin Temperature 14°C  
Max TemperatureMax Temperature 25°C  
Chance of RainChance of Rain 13%  
PrecipitationPrecipitation 15 mm  
Rainy daysRainy days 4 days  
HumidityHumidity 65% *  
WindspeedWindspeed 14 km/h *  
SunshineSunshine 312 hours *  
Percentage SunshinePercentage Sunshine 65% *  
* Data from: Seattle, the United States of America (15 KM, 9 Miles).

Where to go in the United States of America in July

Find out more about the weather in the United States of America in July and which places have the best weather conditions in this month.

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Legend perfect weather pleasant tolerable unpleasant poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C and 29°C and not too much precipitation (less than 90 mm a month).

So, what should you wear in Mercer Island in July?

For visitors traveling to Mercer Island, we recommend wearing layers. So maybe a skirt, t-shirt, shorts for during the day and jeans and a warm jacket for some days and evenings.

What To Do

We rated the following activities from 1 (least suitable) to 10 (best) to do in July.

Swimming
10/10
Cycling
10/10
Walking
10/10
Barbeque
10/10
Camping
10/10
Outdoor sports
10/10

Interested in more climate information?

Weather and Climate provides you with all the information you need about the climate in Mercer Island.

Our site offers climate and forecast data for every country in the world. Are you going to the United States of America? On this website you can find historical weather averages for many cities in the United States of America. Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal climate conditions. Find out where to go with our weather planner.