Tent campsites near Decatur, Illinois offer access to the region's mix of prairie and woodland environments. The area averages 39 inches of rainfall annually with temperatures ranging from 20°F in winter to 85°F in summer, creating distinct camping seasons. Most tent camping options lie along waterways including Lake Shelbyville and the Kaskaskia River, providing water recreation opportunities within a 45-mile radius.
What to do
Water activities at Lake Shelbyville: Sullivan Marina and Campgrounds Resort offers tent camping with direct access to Lake Shelbyville. "This was a great campground with clean facilities. But they have very strict hours, and after 10 PM you have to call to get in the gates," notes camper ShayLin E., who recommends arriving early to avoid complications.
Fishing opportunities: The Spillway (IL) provides excellent fishing access where the Kaskaskia River flows from Lake Shelbyville. According to Jan G., this small campground offers "water to fish and bike trails" that are "great all year," making it suitable for multiple seasons.
Wildlife observation: Tent campers at Edward Madigan State Fish and Wildlife Area can explore designated wildlife habitat approximately 70 miles northwest of Decatur. One visitor, Sarra W., described it as an "awesome place" that she "would take my family back" to, indicating its appeal for nature observation.
What campers like
River access for water recreation: The Spillway campground offers unique river recreation opportunities with rental equipment available. Michael M. notes, "The campground is the only one with full access to the river after it leaves Lake Shelbyville. The fishing here and at the Spillway across the road are very good."
Wooded sites for shade: Spitler Woods State Natural Area provides tent camping under tree cover, creating cooler summer temperatures. Thomas F. describes it as having "great sites" with "plenty to do," calling it his "favorite place to camp in Illinois."
Proximity to outdoor activities: Most tent campgrounds in the region provide access to hiking, fishing, and water recreation within walking distance of campsites. Even sites close to towns like Shelbyville can feel secluded, with Michael M. noting that at Spillway, "even though you are close to town it is peaceful."
What you should know
Facility limitations: Tent campsites vary significantly in amenities. While Spillway offers showers and electric hookups, Shady Grove Campground — Hidden Springs State Forest provides only basic toilets and drinking water without shower facilities.
Gate restrictions: Sullivan Marina maintains strict access hours. ShayLin E. warns that "after 10 PM you have to call to get in the gates," so planning arrival times accordingly prevents complications.
Seasonal variations: Most tent sites around Decatur experience best conditions from late spring through early fall. Michael M. visited Spillway "in October and it was pretty empty," suggesting shoulder seasons offer more solitude despite cooler temperatures.
River conditions: Water levels on the Kaskaskia River fluctuate seasonally, affecting camping and recreation options at riverside sites like Spillway and Kaskaskia River Camp.
Tips for camping with families
Less-known locations: Kaskaskia River Camp provides tent sites with picnic tables, potable water, and toilet facilities in a location that remains under the radar. This can mean fewer crowds during peak seasons.
Wildlife areas for educational opportunities: Edward Madigan State Fish and Wildlife Area offers family-friendly camping with opportunities to observe native Illinois species. Sarra W. specifically mentioned she "would take my family back," indicating its suitability for children.
Activity planning: Sites near Lake Shelbyville like Sullivan Marina provide multiple water recreation options. For families with older children, Michael M. notes that at Spillway, you can "have fun here with the canoe's and river fishing," though parental supervision is essential near water.
Weather considerations: Spring camping near Decatur often involves mud and possible flooding near waterways, while summer brings humidity and temperatures regularly exceeding 85°F. Fall offers milder conditions but requires warmer sleeping gear.
