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
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.