Thatcher, Idaho is a small town located in Franklin County, in the southeastern part of the state. The town experiences a continental climate, characterized by hot summers and cold winters. Summers in Thatcher are typically dry and sunny, with temperatures ranging from the mid-80s to mid-90s°F. Winters are cold, with temperatures often dropping below freezing, and occasional snowfall.

Thatcher is situated near the Bear River, which flows through the region. The river serves as an important hydrological feature, providing water for irrigation and supporting local wildlife. The hydrology constituents of the area include water from the Bear River, as well as groundwater sources.

Outdoor recreation opportunities in Thatcher are plentiful. The town is surrounded by natural beauty, with opportunities for hiking, camping, and fishing. The nearby Bear River Mountains offer numerous trails for hiking and mountain biking, allowing visitors to explore the scenic landscapes. Water activities like fishing and boating can be enjoyed on the Bear River. Additionally, during the winter months, residents and visitors can enjoy snowmobiling and skiing in the nearby mountains. Thatcher provides ample opportunities for outdoor enthusiasts to immerse themselves in nature and enjoy a variety of recreational activities.