Malcom, Iowa is a small town located in Poweshiek County. It experiences a humid continental climate, characterized by hot and humid summers and cold winters. Average temperatures range from around 20°F (-7°C) in winter to 85°F (29°C) in summer, with precipitation distributed fairly evenly throughout the year.

In terms of hydrology constituents, Malcom is part of the Skunk River watershed. The town is not directly situated on a major river but is surrounded by agricultural fields and small creeks that contribute to the local hydrology. The Skunk River itself provides opportunities for activities like fishing, boating, and wildlife observation, although it is not immediately adjacent to Malcom.

Outdoor recreation opportunities in Malcom include nearby parks and nature areas. Diamond Lake Park, located about 10 miles east of the town, offers picnic areas, hiking trails, and fishing opportunities. Oakland Mills Park, around 15 miles northwest of Malcom, features a 2,200-acre wildlife area, camping sites, and trails for hiking, biking, and horseback riding. Overall, Malcom, Iowa provides residents and visitors with access to a range of outdoor activities that allow them to explore and enjoy the natural beauty of the region.