In August you’ll find all the park roads, services, and campgrounds are open so it’s one of the best times to visit Yellowstone National Park.
The average temperatures in August at Yellowstone are highs near 80 and lows in the high 40s degrees Fahrenheit.
Before exploring any Yellowstone hiking trails, we recommend you check with the rangers at the Visitor Center to get current trail conditions.
Any time of year is a good time to see the hydrothermal features in Yellowstone: geysers, hot springs, mudpots, travertine terraces and fumaroles.