Markesan, Wisconsin is a small town located in Green Lake County. The region experiences a humid continental climate, characterized by warm summers and cold winters. Average summer temperatures range from 70°F to 85°F, while winter temperatures can drop below freezing, averaging between 15°F and 30°F. Precipitation is fairly evenly distributed throughout the year, with an annual average of around 34 inches.

Situated near the Grand River and Big Green Lake, hydrology plays a significant role in Markesan. The Grand River, a tributary of the Fox River, flows through the town, offering opportunities for fishing and boating. Big Green Lake, one of the deepest lakes in Wisconsin, provides additional recreational activities such as swimming, water skiing, and sailing.

Outdoor enthusiasts can also explore the surrounding natural areas, including the Grand River Marsh Wildlife Area, which offers hiking, birdwatching, and hunting opportunities. Markesan State Wildlife Area is another popular spot for hunting and wildlife observation.

Overall, Markesan provides a pleasant climate for outdoor activities, abundant water resources, and various recreational opportunities for nature lovers and adventure seekers alike.