Mid to Late October is great Fall camping in Southern Wisconsin. Cool nights range from lower 30's to upper 40's. Day time temps can exceed 60.
Pike Lake State Park is part of the northern Kettle Moraine glacial deposit. This park offers fantastic hiking for many skill levels.
Overnight camping has standard primitive sites (all wooded sites) scattered around single paved campground loop. Sites at beginning of loop are on hillside with leved pads for your tent. Sites at bottom of loop (near bathrooms) are flatter. However sites at bottom are closer together, than at the top.
Pike Lake also has 3 (relatively new) hike in sites. I believe at least 1 of the hike in sites is non-reservable. All 3 sites have trail access from a parking lot (about 3/4 mile north from standard camp ground).
This campground is our go to during the school year. Practically walking distance to our house, this campground is generally nice. Wooded lots make you feel overall secluded. I tend to book sites close to the bathrooms (young kids). However sites on the top of the loop are nice too. When the kids stay home, the hike in sites are very nice.
Biggest disadvantage is the campground proximity to the rest of the park. One of the biggest draws to the park is the lake / beach. The camping is on the opposite side of the park to the beach. Certainly not a deal breaker, but when you have little ones, you just have to plan accordingly.