Best Time to Visit Stonewall National Monument

Stonewall National Monument is a National Monument in NY and one of the busier parks in the system, drawing about 2.3 million recreation visits in 2024. Visitation has held fairly steady over the past decade. Crowds concentrate sharply by season: June is the busiest month at about 10.6× the park's average month, while September is the calmest at roughly 0.0× — a 106-to-1 swing between high and low season. Roughly 92% of the year's visitors arrive in the three summer months of June, July and August alone, so timing a trip outside that window is the single biggest lever on how crowded the park feels. Weather swings from an average high-season warmth near 78°F in July down to about 34°F in January, with the wettest stretch in July and meaningful snowfall around February. About 7 months a year see comfortable average temperatures in the 50–80°F range, which is part of why crowd timing and weather timing don't always line up. The sweet spot is September: pleasant weather with noticeably thinner crowds (shoulder season). Visit then and you trade a little peak-season certainty for noticeably shorter lines and easier parking than the June rush. Daylight ranges from about 9.1 hours in midwinter to 14.9 hours near the summer solstice, which shapes how much ground you can cover in a day. These crowd figures are drawn from 2017–2025 of National Park Service visitor-use records, paired with 1991–2020 NOAA climate normals, and are updated as new monthly data is released.