Lake Mills is a small city located in Jefferson County, Wisconsin. The climate in Lake Mills is classified as humid continental, characterized by warm summers and cold winters. Average temperatures range from 20°F (-6°C) in January to 78°F (26°C) in July. Precipitation is evenly distributed throughout the year, with an annual average of 34 inches (86 cm) and snowfall of around 40 inches (102 cm).

The city's hydrology constituents are predominantly influenced by Rock Lake, a 1,371-acre (555 hectares) lake located in Lake Mills. The lake offers various recreational activities such as boating, fishing, kayaking, and swimming. In addition to Rock Lake, the area boasts multiple smaller lakes and ponds, providing additional opportunities for outdoor enthusiasts.

Lake Mills is surrounded by picturesque landscapes, making it an ideal destination for hiking, camping, and wildlife watching. The area features several parks and trails, including Aztalan State Park, Tyranena Park, and the Glacial Drumlin State Trail, where visitors can explore the natural beauty and enjoy outdoor activities.

Overall, Lake Mills provides a charming setting for outdoor enthusiasts, offering a diverse range of recreational opportunities amidst its beautiful lakes and scenic surroundings.