• A rainbow arches over the Mound City Group after a thunderstorm

    Hopewell Culture

    National Historical Park Ohio

Current Conditions

MCG Summer Rainbow

A rainbow arching over the Mound City Group after a summer thunderstorm.

NPS/Tom Engberg

South Central Ohio Weather

For current weather conditions, please click here (external link to Accuweather).



Historical Weather Averages

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?

State Route 104 entrance

Established on March 2nd, 1923 as Mound City Group National Monument, the park was the first federally created National Park Service site in Ohio. President Warren G. Harding, a native of Ohio, established the national monument using powers granted to him under Section 2 of the 1906 Antiquities Act. The park was eventually re-named Hopewell Culture National Historical Park on May 27th, 1992 after congressional legislation was approved in the House and the Senate. More...