How Crowded Is Upper Delaware Scenic & Recreational River in December?

December runs about 0.2× Upper Delaware Scenic & Recreational River'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 4,400 recreation visits, based on National Park Service monthly counts from 1980 to 2025.

It is the quietest month of the year at Upper Delaware; by contrast July, the busiest, runs about 2.9× the average — so December is the easiest time to have the place largely to yourself.

On our Best Time to Visit score December rates 42/100 ("Poor"), versus the top-rated June at 69/100 — 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 38°F and an overnight low around 21°F, with about 3.7" of precipitation.

That average of about 29°F is cold, with winter conditions likely on higher ground.

Because June, July and August together draw about 59% 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 hours of daylight in December to explore — near the year-round minimum.

Park-wide, 2025 drew 380,245 recreation visits, up 0.8% from 377,061 in 2024.

Across the past decade overall visitation has risen about 34.9%, so a December visit is likely to feel busier than it did a few years ago.