Current Conditions



  • Alert 1 , Severity ,caution ,, Mound City Group Visitor Center Construction Rehab work is being performed on the exterior walls of the Mound City Group visitor center. Please use caution when walking to/from the building as crews are working. Please obey all signage regarding temporary closures posted around the building.
  • Alert 2 , Severity ,caution ,, Shelter House @ Seip - Closed UFN The shelter house at Seip Earthworks is closed until further notice due to rehabilitation efforts. The grounds at Seip are OPEN. For your safety, please DO NOT ENTER the structure at any time. We will advise when rehabilitation efforts are completed.

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 see the local weather forecast on 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".

Last updated: September 14, 2016

Contact the Park

Mailing Address:

16062 State Route 104
Chillicothe, OH 45601


(740) 774-1126

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