Shelby, Iowa is a small town located in the western part of the state. It has a humid continental climate, characterized by hot and humid summers, and cold and dry winters. The average temperature in summer ranges from 70°F to 90°F, while winter temperatures can drop below freezing, averaging around 20°F. Shelby receives about 34 inches of rainfall annually, with the majority occurring during the growing season.

Hydrologically, the town is situated near the Nishnabotna River, which provides recreational opportunities for locals and visitors alike. The river allows for activities such as fishing, canoeing, and kayaking. Moreover, the surrounding area features several lakes, including the Lake Anita State Park, which provides opportunities for camping, hiking, boating, and picnicking.

In conclusion, Shelby, Iowa offers a pleasant climate with distinct seasons, providing residents and tourists with various outdoor recreation opportunities. The hydrology constituents of the region, including the Nishnabotna River and nearby lakes, contribute to the appeal of Shelby for nature lovers and outdoor enthusiasts.