Millfield, Ohio is a small village located in Athens County, in the southeastern part of the state. The climate in Millfield is generally temperate, with hot summers and cold winters. Average high temperatures range from the mid-80s°F (30°C) in summer to the mid-30s°F (2°C) in winter. Precipitation is evenly distributed throughout the year, with moderate rainfall and occasional snowfall during the winter months.

In terms of hydrology constituents, Millfield is positioned near the Hocking River, which flows through the region. This river provides opportunities for fishing, boating, and other water-based activities. Additionally, the area is surrounded by numerous lakes and ponds, including Dow Lake and Strouds Run State Park, offering further opportunities for outdoor recreation.

Millfield is known for its natural beauty and provides ample opportunities for hiking, camping, and birdwatching. The nearby Wayne National Forest provides extensive trails for exploring the scenic woodlands, while Strouds Run State Park offers facilities for picnicking, swimming, and nature observation. With its diverse outdoor recreation opportunities, Millfield is a great destination for nature lovers and outdoor enthusiasts.