Saint-Thomas, Missouri is a small, picturesque town located in the central part of the state. The climate in this region is characterized by mild summers and cold winters. Average temperatures range from 25°F (-4°C) in winter to 85°F (29°C) in summer. Rainfall is evenly distributed throughout the year, with an annual average of 40 inches (102 cm). The area is known for its beautiful landscapes, with rolling hills and scenic rivers.

Hydrologically, Saint-Thomas is blessed with an abundance of water resources. The nearby Osage River provides a wide range of recreational opportunities, such as fishing, boating, and swimming. Anglers can try their luck at catching a variety of fish species, including bass, catfish, and crappie. Additionally, the region is dotted with numerous small streams and creeks, perfect for hiking and exploring.

Outdoor enthusiasts will find plenty to do in Saint-Thomas. The town is surrounded by lush forests, making it a great spot for camping, picnicking, and hiking. There are several trails that wind through the area, offering stunning views of the countryside. Birdwatchers will find the region teeming with diverse avian species, making it a popular destination for birding. Overall, Saint-Thomas, Missouri offers a tranquil and inviting environment for nature lovers and outdoor adventurers alike.