How Crowded Is Monocacy National Battlefield in December?

December runs about 0.7× Monocacy National Battlefield's average month, which makes it a quiet month here — roughly 6% of the park's yearly visitors come in December.

In a typical December the park sees roughly 7,000 recreation visits, based on National Park Service monthly counts from 1991 to 2025.

That makes December the 10th-busiest of the park's twelve months, sitting between the July peak (1.5×) and the January low (0.5×).

On our Best Time to Visit score December rates 42/100 ("Poor"), versus the top-rated April at 56/100 — pleasant weather with noticeably thinner crowds (shoulder season).

Typical December weather, from 1991–2020 NOAA climate normals at the nearest station, averages a daytime high near 47°F and an overnight low around 31°F, with about 4" of precipitation.

That average of about 39°F is cool, so layers and a shorter daylight window matter.

Because June, July and August together draw about 33% of annual visitors, choosing December instead steps outside that summer crush — the single biggest lever on how crowded the park feels.

You'll have about 9.2 hours of daylight in December to explore — near the year-round minimum.

Park-wide, 2025 drew 116,902 recreation visits, about flat from 116,520 in 2024.

Across the past decade overall visitation has risen about 7.4%, so a December visit is likely to feel busier than it did a few years ago.