The climate in Chillicothe is typical of the Midwest, with cold winters and warm summers. The town is bordered by the Illinois River, and several creeks flow through the area, including Coal Creek and Hickory Creek. Outdoor recreation opportunities in Chillicothe include hiking, fishing, and camping in nearby parks and conservation areas. The Chillicothe Park District offers a variety of programs and activities for all ages, including sports leagues and fitness classes. Overall, Chillicothe is a great place for individuals and families who enjoy spending time outdoors and appreciate the natural beauty of Illinois.
Chillicothe receives approximately 923mm of rain per year, with humidity levels near 83% and air temperatures averaging around 11°C. Chillicothe has a plant hardyness factor of 5, meaning plants and agriculture in this region thrive during a short period during spring and early summer. Most plants will die off during the colder winter months.