Located in Newton County, Missouri, Seneca has a diverse climate characterized by four distinct seasons. Summers are typically hot and humid, with temperatures averaging around 90°F (32°C) and occasional thunderstorms. Winters are cold, with temperatures dropping to around 30°F (-1°C) and occasional snowfall. Spring and fall offer mild temperatures and colorful foliage.

Seneca is surrounded by natural beauty, with Clear Creek Lake and the Elk River being prominent hydrological features. Clear Creek Lake provides opportunities for boating, fishing, and swimming. The Elk River is known for its scenic float trips, offering a chance to enjoy the peacefulness of nature while kayaking, canoeing, or tubing.

In addition to water-based activities, Seneca offers outdoor recreational opportunities such as hiking, camping, and hunting. The area boasts several parks and nature trails, including the Crowder State Park, where visitors can explore the diverse flora and fauna of the region.

Overall, Seneca, Missouri, offers a moderate climate throughout the year, with an abundance of water sources and various outdoor activities, making it an attractive destination for nature enthusiasts and outdoor adventurers.