How Crowded Is Frederick Douglass in September?
September is a quiet month at Frederick Douglass National Historic Site, running about 0.8× the park's average month — roughly 6% of the year's visitors come in September. That puts it between the June peak and the January low. Overall our best-time score rates September as "Good" for a visit. Typical September weather averages a high near 81°F and a low around 64°F, with about 3.9" of precipitation. You'll get about 12.2 hours of daylight to explore.
Frequently Asked Questions
September is quiet at Frederick Douglass National Historic Site (about 0.8× the average month). Our best-time score rates it "Good". The single best month overall is September.
The busiest month is June and the quietest is January. September sits at about 0.8× the park's average, or 6% of annual visitation.
Source: National Park Service Visitor Use Statistics (1979–2025), NOAA NCEI Climate Normals 1991–2020. Updated 2026-06-20.