How Crowded Is Agate Fossil Beds National Monument in December?
December runs about 0.1× Agate Fossil Beds National Monument's average month, which makes it a very quiet month here — roughly 1% of the park's yearly visitors come in December.
In a typical December the park sees about 130 recreation visits, based on National Park Service monthly counts from 1979 to 2025.
That makes December the 10th-busiest of the park's twelve months, sitting between the August peak (2.8×) and the January low (0.1×).
On our Best Time to Visit score December rates 41/100 ("Poor"), versus the top-rated June at 60/100 — 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 8°F, with about 0.4" of precipitation.
That average of about 23°F is cold, with winter conditions likely on higher ground.
Because June, July and August together draw about 61% 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 8.9 hours of daylight in December to explore — near the year-round minimum.
Park-wide, 2025 drew 16,827 recreation visits, down 13.2% from 19,395 in 2024.
Frequently Asked Questions
December is very quiet at Agate Fossil Beds National Monument (about 0.1× the average month). Our best-time score rates it "Poor". The single best month overall is June.
The busiest month is August and the quietest is January. December sits at about 0.1× the park's average, or 1% of annual visitation.
A typical December sees about 0,000 recreation visits at Agate Fossil Beds National Monument, based on National Park Service monthly counts from 1979–2025.
Where to stay near Agate Fossil Beds in December
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Source: National Park Service Visitor Use Statistics (1979–2025), NOAA NCEI Climate Normals 1991–2020. Updated 2026-07-14.