How Crowded Is Dinosaur in August?
August is a very busy month at Dinosaur National Monument, running about 2.1× the park's average month — roughly 18% of the year's visitors come in August. That puts it between the July peak and the February low. Overall our best-time score rates August as "Fair" for a visit. Typical August weather averages a high near 88°F and a low around 59°F, with about 0.9" of precipitation. You'll get about 13.6 hours of daylight to explore.
Frequently Asked Questions
August is very busy at Dinosaur National Monument (about 2.1× the average month). Our best-time score rates it "Fair". The single best month overall is May.
The busiest month is July and the quietest is February. August sits at about 2.1× the park's average, or 18% of annual visitation.
Source: National Park Service Visitor Use Statistics (1979–2025), NOAA NCEI Climate Normals 1991–2020. Updated 2026-06-20.