How Crowded Is Stonewall in May?
May is a very quiet month at Stonewall National Monument, running about 0.2× the park's average month — roughly 2% of the year's visitors come in May. That puts it between the June peak and the September low. Overall our best-time score rates May as "Excellent" for a visit. Typical May weather averages a high near 71°F and a low around 55°F, with about 4" of precipitation. You'll get about 14.3 hours of daylight to explore.
Frequently Asked Questions
May is very quiet at Stonewall National Monument (about 0.2× the average month). Our best-time score rates it "Excellent". The single best month overall is September.
The busiest month is June and the quietest is September. May sits at about 0.2× the park's average, or 2% of annual visitation.
Source: National Park Service Visitor Use Statistics (2017–2025), NOAA NCEI Climate Normals 1991–2020. Updated 2026-06-20.