🌤 Weather at Elk Rock State Park by season
| Spring | Summer | Fall | Winter |
|---|---|---|---|
| 26–71 °F | 60–85 °F | 27–76 °F | 10–34 °F |
Each range runs from the coldest monthly average low to the warmest monthly average high in that season (1991-2020 climate normals), measured at Newton, 6 mi away, elevation 960 ft. Conditions at the park can differ from the station, especially where elevation differs — check a forecast before you go.
Elk Rock State Park is a public state park in Iowa near Grinnell in Marion County County. Spanning 850 acres and established in 1978, this park offers a peaceful retreat into nature for visitors of all ages.
Quick Facts
| State | Iowa |
| Nearest City | Grinnell |
| County | Marion County |
| Park Size | 850 acres |
| Established | 1978 |
| Google Rating | ⭐ 4.4/5 (300 reviews) |
Location & Getting There
Elk Rock State Park is located near Grinnell, Iowa. The park’s coordinates are 41.7833, -92.9500.
Things to Do
Iowa state parks offer a surprising diversity of landscapes beyond the classic rolling farm fields, featuring deep river valleys, natural lakes, loess hills, and ancient limestone bluffs. Activities revolve around the water, with excellent fishing for crappie, bluegill, and bass, boating on natural and man-made lakes, and pleasant beach swimming. Land activities include camping in shaded hardwood forests, hiking expanding trail networks, exploring unique geological formations like the Maquoketa Caves, and cycling on extensive paved rail-trails that frequently connect park units across the state.
Best Time to Visit
Summer (June–August) is peak season, ideal for lake activities and family camping, though July and August can bring high heat and humidity. Fall (September–October) is arguably the best time to visit, offering cooler, comfortable temperatures, beautiful hardwood foliage, and excellent conditions for hiking and fishing without the summer crowds. Spring (April–May) provides great mushroom hunting (morels) and spring wildflower blooms. Winter is quiet, but several parks offer cross-country skiing and ice fishing when conditions allow.
Visitor Tips
Iowa stands out by offering free admission to all state parks for day use — no vehicle permits or entrance fees are required. Camping fees apply, and reservations can be made through the Iowa State Parks reservation system. Half of all campsites are reservable, while the other half remain first-come, first-served. When visiting cave parks like Maquoketa Caves, check for any temporary closures related to bat protection (White-Nose Syndrome) and wear clothes you don’t mind getting muddy.
Explore More Iowa State Parks
Elk Rock State Park is one of many outstanding state parks in Iowa. Discover more parks in our Best State Parks in Iowa guide, or use our Park Finder to search by activity, location, or features.
Wildlife & Nature
Elk Rock SP — 545 acres on Red Rock Reservoir — Iowa’s largest lake (15,000 acres). The park’s reservoir, oak-hickory forest, and prairie support bald eagles (one of the largest winter bald eagle concentrations in the Midwest), white pelicans, and white-tailed deer.
Nearby Attractions
Knoxville — adjacent — home of the Knoxville Raceway (Sprint Car Capital of the World). Pella — 15 miles east — has Dutch architecture and tulip festivals.
Make it a road trip: Pair a visit with Rock Creek State Park (a short drive away) or Three Mile Lake State Park (a short drive away).
⛺ Camping at Elk Rock State Park: Campgrounds & Cabins
| Campsites | Two campgrounds: an Equestrian Campground with standard electric, standard non-electric, and buddy sites, with hitching rails, horse stalls, and a 100-by-200-foot riding arena; and a Non-Equestrian Campground with standard electric and standard non-electric sites plus one youth-group-only site. Both campgrounds have modern shower facilities; a dump station serves the park. Electric service ranges 15-50 amp, with water hookups at select sites. |
|---|---|
| Pets | Pets allowed at standard and equestrian campsites. |
| Reservations | 100% reservable; book online at iowastateparks.reserveamerica.com or call 641-842-6008. Statewide DNR booking window is 3 months ahead of arrival. |
| Special sites | RV/equipment length 45-75 feet. Equestrian sites available. No boat-in sites. |
| Season notes | Campground closed November 1 - March 31. |
Camping questions about Elk Rock State Park
Can you camp at Elk Rock State Park?
Two campgrounds: an Equestrian Campground with standard electric, standard non-electric, and buddy sites, with hitching rails, horse stalls, and a 100-by-200-foot riding arena; and a Non-Equestrian Campground with standard electric and standard non-electric sites plus one youth-group-only site. Both campgrounds have modern shower facilities; a dump station serves the park. Electric service ranges 15-50 amp, with water hookups at select sites.
How do you reserve a campsite at Elk Rock State Park?
100% reservable; book online at iowastateparks.reserveamerica.com or call 641-842-6008. Statewide DNR booking window is 3 months ahead of arrival.
Are pets allowed at the Elk Rock State Park campground?
Pets allowed at standard and equestrian campsites.
Source: iowadnr.gov (verified July 2026). Details change seasonally — confirm when booking.
🐾 Dogs & Pets at Elk Rock State Park
- Pets allowed? statewide rule
- Pets are allowed in Iowa state parks and recreation areas, including trails and campgrounds, but must be kept on a leash of six feet or less or confined.
- Leash rule statewide rule
- Leash or chain not to exceed 6 feet, led or carried by the owner, or confined
- Beaches & swim areas statewide rule
- Animals are prohibited within designated beach areas statewide
- Cabins & lodging statewide rule
- Only dogs or assistive animals are allowed in designated dog-friendly cabins/yurts (limit two dogs); all other cabins are pet-free; dogs must be kenneled if left unattended inside
- Statewide exceptions statewide rule
- Hunting dogs in designated hunting areas during season are exempt from the leash rule; pets may not be left unattended in campgrounds
Are dogs allowed at Elk Rock State Park?
Pets are allowed in Iowa state parks and recreation areas, including trails and campgrounds, but must be kept on a leash of six feet or less or confined. Individual parks can post stricter rules — check signage on arrival.
Rules verified July 2026 via iowadnr.gov. More: Iowa state parks guide · Dog rules in all 50 states compared
Park Location
Plan your gear for Elk Rock State Park
From our editorial guides, matched to this park’s activities:
