Bottom line: July and August are the most popular times, for good reason. The trail conditions and weather are most favorable then.
For most hikers, who are looking for a summer hiking experience, the best time to go is when the snow has melted off the trails but before the weather turns sour in the fall.
The summer days are longer so you can start earlier in the morning and have more daylight to finish your unforgettable hike.
Want an unforgettable domain name for your own outdoor blog?
Washington Trails 