Nevinville, Iowa is a small rural community located in Adair County. The town experiences a humid continental climate, characterized by hot summers and cold winters. Average high temperatures range from around 30°F (-1°C) in the winter to about 85°F (29°C) in the summer. Precipitation is spread evenly throughout the year, with an annual average of around 35 inches (89 cm).

The hydrology constituents in Nevinville are primarily influenced by the Middle River, which runs through the town. The river provides opportunities for fishing, boating, and other water-based recreational activities. The surrounding area also features several small lakes and ponds that offer additional fishing and boating opportunities. The Middle River State Recreation Area, located just a short drive from Nevinville, provides ample space for camping, hiking, and wildlife observation.

For outdoor enthusiasts, Nevinville offers a peaceful and natural environment to explore and enjoy recreational activities. Whether it's fishing in the river, boating on the lakes, or camping in the nearby state recreation area, Nevinville provides a serene and picturesque setting for outdoor recreation.