How Crowded Is Florissant Fossil Beds National Monument in December?

December runs about 0.3× Florissant Fossil Beds National Monument's average month, which makes it a very quiet month here — roughly 2% of the park's yearly visitors come in December.

In a typical December the park sees roughly 1,600 recreation visits, based on National Park Service monthly counts from 1979 to 2025.

That makes December the 11th-busiest of the park's twelve months, sitting between the July peak (2.2×) and the January low (0.3×).

On our Best Time to Visit score December rates 42/100 ("Poor"), versus the top-rated August at 48/100 — best overall balance of crowds, weather and daylight.

Typical December weather, from 1991–2020 NOAA climate normals at the nearest station, averages a daytime high near 39°F and an overnight low around 5°F, with about 0.4" of precipitation and roughly 7" of snow.

That average of about 22°F is cold, with winter conditions likely on higher ground.

Because June, July and August together draw about 49% 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 9.3 hours of daylight in December to explore — near the year-round minimum.

Park-wide, 2025 drew 63,680 recreation visits, down 10.9% from 71,499 in 2024.