How Crowded Is Clara Barton in May?
May is a busy month at Clara Barton National Historic Site, running about 1.4× the park's average month — roughly 12% of the year's visitors come in May. That puts it between the June peak and the January low. Overall our best-time score rates May as "Fair" for a visit. Typical May weather averages a high near 76°F and a low around 54°F, with about 4.4" of precipitation. You'll get about 14.1 hours of daylight to explore.
Frequently Asked Questions
May is busy at Clara Barton National Historic Site (about 1.4× the average month). Our best-time score rates it "Fair". The single best month overall is October.
The busiest month is June and the quietest is January. May sits at about 1.4× the park's average, or 12% of annual visitation.
Source: National Park Service Visitor Use Statistics (1979–2025), NOAA NCEI Climate Normals 1991–2020. Updated 2026-06-20.