Hull, Iowa is a small town located in Sioux County. It experiences a humid continental climate with four distinct seasons. Summers are warm and humid, with average temperatures ranging from the mid-70s to low 80s Fahrenheit. Winters are cold and snowy, with temperatures often dropping below freezing, and average snowfall of around 30 inches per year. Spring and fall bring mild temperatures and are known for their vibrant foliage.

Hydrologically, Hull is mainly situated in the Little Rock River watershed, which is part of the larger Missouri River basin. The area is characterized by gently rolling terrain and fertile soils, suitable for agriculture. The town's water supply comes from underground wells, and a network of drainage ditches helps manage excess water during heavy rainfall.

Hull offers several outdoor recreation opportunities for residents and visitors alike. The town has multiple parks with playgrounds and sports fields, providing spaces for activities such as baseball, soccer, and picnicking. The nearby Sioux County Park offers opportunities for camping, hiking, fishing, and boating. In winter, residents can enjoy ice skating and ice fishing on frozen lakes. Overall, Hull provides a pleasant environment for outdoor enthusiasts to engage in various activities throughout the year.