Udell, Iowa is a small town located in Appanoose County in the southern part of the state. Its climate can be characterized as a humid continental climate, with hot summers and cold winters. Average high temperatures in the summer months range from 85°F (29°C) to 90°F (32°C), while average winter lows range from 10°F (-12°C) to 20°F (-7°C). Precipitation is evenly distributed throughout the year, with an average of around 40 inches (102 cm) annually.

Hydrology constituents in Udell mostly consist of small creeks and streams that flow through the area, with the nearby Chariton River being the largest water body. These water sources provide opportunities for fishing and boating enthusiasts.

Udell is surrounded by picturesque natural landscapes, offering various outdoor recreational activities. The nearby Stephens State Forest and Lake Rathbun provide opportunities for hiking, picnicking, camping, and wildlife viewing. Hunting is also popular in the area, with game species including deer, turkey, and waterfowl. The scenic countryside is ideal for nature photography and exploring the outdoors. Overall, Udell provides a serene environment for outdoor enthusiasts to enjoy nature and engage in recreational activities.