Leland, Illinois is a small village located in LaSalle County. It experiences a humid continental climate, characterized by warm summers and cold winters. Average temperatures range from 23°F (-5°C) in winter to 85°F (29°C) in summer. Precipitation is evenly distributed throughout the year, with an annual average of 36 inches (91 cm). Leland also receives an average of 26 inches (66 cm) of snowfall annually.

Hydrologically, Leland is situated in the upper Illinois River watershed. The area is primarily drained by the Little Vermilion River and its tributaries. These water bodies provide opportunities for fishing, canoeing, and kayaking. Anglers can catch various species such as smallmouth bass, northern pike, and catfish. Additionally, Leland boasts several parks and natural areas, offering residents and visitors opportunities for outdoor recreation. Shabbona Lake State Park, just a short drive away, provides a beautiful setting for camping, hiking, boating, and swimming. The park also offers ice fishing and cross-country skiing during the winter months.

In summary, Leland, Illinois experiences a continental climate with distinct seasons. Its hydrology is characterized by the Little Vermilion River and its tributaries, providing opportunities for fishing and water sports. The area's outdoor recreation opportunities are complemented by the nearby Shabbona Lake State Park, offering various activities year-round.