How Crowded Is Catoctin Mountain in September?
September is a busy month at Catoctin Mountain Park, running about 1.3× the park's average month — roughly 11% of the year's visitors come in September. That puts it between the October peak and the February low. Overall our best-time score rates September as "Fair" for a visit. Typical September weather averages a high near 75°F and a low around 58°F, with about 5.3" of precipitation. You'll get about 12.2 hours of daylight to explore.
Frequently Asked Questions
September is busy at Catoctin Mountain Park (about 1.3× the average month). Our best-time score rates it "Fair". The single best month overall is May.
The busiest month is October and the quietest is February. September sits at about 1.3× the park's average, or 11% of annual visitation.
Source: National Park Service Visitor Use Statistics (1979–2025), NOAA NCEI Climate Normals 1991–2020. Updated 2026-06-20.