The park lies in the south central Ohio area, about a one hour drive south of Columbus. This puts the park in a humid continental zone with a generally temperate climate. Winters are mildly cold with average temperatures around 30 degrees (F). Summers are hot and humid with an average temperature around 75 degrees (F). Average annual total rainfall is just under 38". Snowfall in the winter is generally light with an average total snowfall of less than 24".
Did You Know?
Obsidian has been found at a few Hopewell earthwork sites. The majority of obsidian, several hundred pounds, was found in one mound at Hopewell Mound Group. Much of the obsidian is from Obsidian Cliff in Yellowstone National Park, Wyoming - over 1,500 miles away. More...