Marseilles, IL

Illini State Park

Availability

Each day shows how many of this campground’s sites are open.

About this spot

Illini State Park is the type of park you think of when you think of big picnics and family gatherings. With its rustic Civilian Conservation Corps buildings and riverside picnic areas, Illini State Park offers beautiful views and a sense of history not found in many other parks. Named for the native Americans who once inhabited the area, the 510-acre Illini State Park is located south of the Illinois River across from Marseilles. In the mid-1920s, the U.S. Army Corps of Engineers built a barge canal to bypass the rapids. The canal borders the park, and visitors can watch as large barges pass through the Marseilles Locks. Less than a mile north of the park is the historic Illinois and Michigan Canal, completed in 1848 when the section from Marseilles to Morris opened. Illini was dedicated as a state park in 1935. Hickory, ash, walnut, elm, cottonwood, oak and maple trees provide shade in the summer and beautiful colors in the fall. Wildlife abound year round. Picnic areas, shelters and playgrounds are found throughout the park. Several of the shelters also have working fireplaces. Both tent and trailer campsites, including electric and sanitation service, are offered and some of the sites offer outstanding views of the river. A youth camp area is available for youth groups. Make campsite reservations online here. River fishing is popular out of Illini State Park.

Typical weather

Illinois River

Average water temperature
Average water temperature for Illinois River, January through DecemberEach point shows the monthly average water temperature in degrees Fahrenheit.35°JJanuary: average water temperature 35°F36°FFebruary: average water temperature 36°F42°MMarch: average water temperature 42°F53°AApril: average water temperature 53°F63°MMay: average water temperature 63°F73°JJune: average water temperature 73°F81°JJuly: average water temperature 81°F78°AAugust: average water temperature 78°F75°SSeptember: average water temperature 75°F60°OOctober: average water temperature 60°F47°NNovember: average water temperature 47°F37°DDecember: average water temperature 37°F

Water: Water Quality Portal — 12 field-sample stations

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