Swan, Iowa is a small town located in Marion County, in the central part of the state. The climate in Swan is characterized by four distinct seasons, with warm summers and cold winters. Average temperatures range from the mid-20s (-4°C) in winter to the mid-80s (29°C) in summer. Precipitation is evenly distributed throughout the year, with rainfall being the most common form.

Hydrology constituents in Swan mainly consist of small creeks and streams, with some lakes and ponds scattered across the area. The region is part of the South Skunk River watershed, ensuring a healthy supply of water for the town's residents and local wildlife.

Outdoor recreation opportunities are abundant in Swan. The town's natural surroundings provide a beautiful backdrop for activities such as fishing, boating, and kayaking in the nearby lakes and ponds. Swan City Park offers picnic areas, playgrounds, and open spaces for families to enjoy. Additionally, the surrounding area is home to several nature reserves and wildlife management areas, providing opportunities for hiking, bird-watching, and wildlife observation.

Overall, Swan, Iowa offers a pleasant climate, adequate water resources, and numerous outdoor recreational activities, making it an attractive place for nature enthusiasts and those seeking a peaceful and active lifestyle.