Illinois State Parks · Illinois
Horseshoe Lake-Madison State Park
Illinois State Parks · Illinois, United States · in Horseshoe Lake State Park
- Season
- May 1 to September 30
- Group sites
- Yes
- Showers
- No
- Pets
- Yes
- Elevation
- 413 ft
- Dark sky
- Bortle class 6
- Cell coverage
- T-Mobile weak · Verizon weak · AT&T good (carriers' 4G LTE filings to the FCC, 2025-12; not measured here)
- Nearest town
- Granite City
- Address
- 3321 Hwy 111, Granite City, IL 62040
- Phone
- (618) 931-0270
- Activities
- Camping, Group Camping
Site map
The imagery of the campground. Press and hold the map to drop your own pins and notes; the operator publishes no site points here. Your ratings, notes, pins and photos are kept with the campground on your Saved list, the same list the camping map and the drive page keep.
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About
Horseshoe Lake-Madison State Park is an Illinois DNR state park in the West Central region of Illinois. Camping site types: Class C (vehicular access without showers, or walk-in with shower access). Also offers: Youth group camping; Organized/adult group camping. Pets ARE allowed (leashed, with water, never left unattended or in a parked vehicle) - IDNR's general statewide practice, confirmed via Starved Rock State Park's own IDNR FAQ. Reservable online through Illinois DNR's own Explore More Illinois system (camp.exploremoreil.com, redirects to the live recreation.exploremoreil.com/IllinoisWeb/ booking platform). Advance booking requires at least 3 days' notice; most sites are reservable May 1-October 31 (some year-round - confirm per park).
Fees
Class C: $8/night - vehicular access without showers, or walk-in sites with shower access. Youth group (Class Y): $2/person/night, $20/day minimum. Organized/adult group (Class O): $4/person/night, $40/day minimum. Reservation fee $5/reservation (non-refundable) plus first night's camping fee; camping fees refunded if cancelled online 3+ days before arrival. Discounts (about half the listed camping fee, full utility fee still applies) for Illinois residents 62+ or disabled with a Class 2/2A card; Illinois disabled veterans and POWs camp free aside from the utility fee; no entrance fee to any Illinois state park (dnr.illinois.gov).
The park's notice (as of November 3, 2026): the campground and the road leading to it are closed until May 2027 for an installation project on the causeway. No campsite reservations are taken.
Weather, month by month
| Month | Typical high | Typical low | Coldest night | Hottest day | Years with a night below 32°F |
|---|---|---|---|---|---|
| January | 37° | 24° | -2° | 67° | 11 of 11 |
| February | 45° | 28° | -2° | 76° | 11 of 11 |
| March | 60° | 39° | 16° | 80° | 8 of 11 |
| April | 68° | 48° | 31° | 85° | 2 of 11 |
| May | 79° | 62° | 43° | 89° | 0 of 11 |
| June | 88° | 69° | 54° | 98° | 0 of 11 |
| July | 89° | 73° | 64° | 96° | 0 of 11 |
| August | 86° | 71° | 61° | 96° | 0 of 11 |
| September | 84° | 65° | 51° | 96° | 0 of 11 |
| October | 67° | 49° | 34° | 86° | 0 of 10 |
| November | 56° | 38° | 14° | 76° | 4 of 10 |
| December | 46° | 31° | 7° | 67° | 9 of 10 |
Mid-month figures from 2016–2026 of daily weather at this spot (ERA5 reanalysis via Open-Meteo, CC BY 4.0), in °F. Typical is the median; coldest and hottest are the extremes seen.
Nearby campgrounds
- Sioux Passage Park Campground · City, County & Regional Parks · 16 mi · 5 sites
- Riverside Landing Park Campground · City, County & Regional Parks · 27 mi · 18 sites
- 370 Lakeside Park RV Campground · City, County & Regional Parks · 29 mi · 75 sites
- West Tyson Park Group Campsite #3 · City, County & Regional Parks · 30 mi · 1 sites
- Missouri Bluffs Park Group Campground · City, County & Regional Parks · 32 mi · 1 sites
All public campgrounds in Illinois · Every state and province · Facts read from the operator 2026-08-25. Confirm fees, rules and current status with the operator before you go.