City, County & Regional Parks · Illinois
Thomas Woods Campground at Marengo Ridge
City, County & Regional Parks · Illinois, United States
- Sites
- 47
- Hookups
- 2 electric
- Elevation
- 869 ft
- Dark sky
- Bortle class 4
- Nearest town
- Marengo
- Address
- 2411 N. Route 23, Marengo, IL 60152
- Phone
- 815-338-6223
Season dates aren't confirmed for this campground yet - opening and closing dates haven't been verified. Check the operator's page or call ahead before you plan a trip.
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
McHenry County Conservation District campground at Marengo Ridge. Non-electric tent sites plus 2 electric RV sites (sites 0 and 4, 30-amp; site 4 needs a 50ft extension cord). Campground host on-site. Season April-October, weekends only (weekday stays available by permit). Check-in before 7pm, checkout by noon. The district publishes one address for Marengo Ridge, so this shares a point with the group campground.
Weather, month by month
| Month | Typical high | Typical low | Coldest night | Hottest day | Years with a night below 32°F |
|---|---|---|---|---|---|
| January | 27° | 12° | -17° | 55° | 11 of 11 |
| February | 32° | 15° | -14° | 62° | 11 of 11 |
| March | 46° | 29° | 3° | 74° | 10 of 11 |
| April | 59° | 39° | 23° | 78° | 6 of 11 |
| May | 70° | 50° | 36° | 87° | 0 of 11 |
| June | 80° | 59° | 46° | 92° | 0 of 11 |
| July | 82° | 66° | 57° | 94° | 0 of 11 |
| August | 80° | 65° | 55° | 90° | 0 of 11 |
| September | 78° | 59° | 49° | 87° | 0 of 11 |
| October | 59° | 44° | 27° | 79° | 2 of 10 |
| November | 46° | 31° | 4° | 70° | 9 of 10 |
| December | 35° | 23° | -8° | 65° | 10 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
- Marengo Ridge Group Campground · City, County & Regional Parks · 0 mi · 1 sites
- Rush Creek Group Campground · City, County & Regional Parks · 8 mi · 1 sites
- Beck's Woods Group Campground · City, County & Regional Parks · 10 mi · 1 sites
- Hickory Grove Highlands Group Campground · City, County & Regional Parks · 14 mi
- The Hollows Group Campground · City, County & Regional Parks · 17 mi · 3 sites
All public campgrounds in Illinois · Every state and province · Facts read from the operator 2026-09-04. Confirm fees, rules and current status with the operator before you go.