How Crowded Is Hamilton Grange National Memorial in May?

May runs about 1.1× Hamilton Grange National Memorial's average month, which makes it an average month here — roughly 9% of the park's yearly visitors come in May.

In a typical May the park sees roughly 5,000 recreation visits, based on National Park Service monthly counts from 1979 to 2025.

That makes May the 7th-busiest of the park's twelve months, sitting between the July peak (1.3×) and the January low (0.5×).

On our Best Time to Visit score May rates 57/100 ("Fair"), versus the top-rated September at 67/100 — pleasant weather with noticeably thinner crowds (shoulder season).

Typical May weather, from 1991–2020 NOAA climate normals at the nearest station, averages a daytime high near 71°F and an overnight low around 55°F, with about 4" of precipitation.

That average of about 63°F is a comfortable range for hiking and being outdoors all day.

Because June, July and August together draw about 31% of annual visitors, choosing May instead steps outside that summer crush — the single biggest lever on how crowded the park feels.

You'll have about 14.3 hours of daylight in May to explore — between the 9.1-hour midwinter low and the 14.9-hour summer high.

Park-wide, 2024 drew 63,647 recreation visits, up 30.8% from 48,674 in 2023.

Across the past decade overall visitation has eased about 12.2%, so May may feel a touch quieter than it once did.