🌤 Weather at Clear Lake State Park by season
| Spring | Summer | Fall | Winter |
|---|---|---|---|
| 24–70 °F | 57–82 °F | 24–74 °F | 7–30 °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 Mason City Municipal Airport, 5 mi away, elevation 1,225 ft. Conditions at the park can differ from the station, especially where elevation differs — check a forecast before you go.
Clear Lake State Park borders one of Iowa’s most beloved natural treasures – a 3,684-acre glacial lake formed 14,000 years ago during the last ice age. Known for its remarkably clear spring-fed water (hence the name), this park offers year-round fishing, summer swimming, and winter ice fishing that draws anglers from across the Midwest.
Located just 2 miles from the charming resort town of Clear Lake (home to the famous Surf Ballroom where Buddy Holly played his last concert), this park combines natural beauty with historic small-town America appeal.
What Makes Clear Lake Special
Natural Glacial Lake
One of Iowa’s clearest, cleanest natural lakes – spring-fed with visibility reaching 8-10 feet. Formed by glaciers 14,000 years ago.
Year-Round Fishing
Outstanding walleye, yellow bass, muskie, and northern pike. One of Iowa’s top ice fishing destinations in winter.
Sandy Beach
Popular supervised swimming area with modern bathhouse. One of Iowa’s most popular campgrounds.
Historic Town
The nearby town of Clear Lake features the Surf Ballroom (Buddy Holly’s last concert 1959), shops, and restaurants.
About the Lake
Clear Lake is a natural wonder – one of Iowa’s few true glacial lakes still in excellent condition:
- 📏 Size: 3,684 acres
- 📐 Depth: Average 10 feet; maximum 30 feet (dredged western area)
- 💧 Water: Spring-fed, naturally clear; visibility up to 8-10 feet
- 🧊 Origin: Formed by glacial action approximately 14,000 years ago
- 🔧 Restoration: Major water quality improvements since 2008
Fishing Guide
Clear Lake is legendary among Iowa anglers – one of the state’s best fisheries for walleye, yellow bass, and muskie. Ice fishing season (December–February) brings hundreds of ice houses to the lake.
| Species | Best Season | Hot Spots | Regulations |
|---|---|---|---|
| 🐟 Walleye | May–June, Fall | Deep points, evening bite | Protected slot: 17-22″ must be released |
| 💛 Yellow Bass | May–August | Schooling fish; fast action | No limit |
| 🦈 Muskie | Fall | Weed edges, structure | Check current regulations |
| 🟢 Northern Pike | Early spring | Shallow bays, weed beds | Check current regulations |
| 🐱 Channel Catfish | Summer nights | North shore, cut bait | No limit |
| ⬜ Crappie | Spring | Brush piles, docks | No limit |
Fishing Tips
- 🏝️ Woodford Island: Excellent bank fishing spot within the state park
- 🌙 Night Fishing: Bank fishing permitted 10:30 PM–4:00 AM in designated areas
- 🧊 Ice Fishing: Clear Lake is one of Iowa’s premier ice fishing destinations. Permanent fish houses appear each winter.
Camping Information
Clear Lake State Park has one of the most popular campgrounds in Iowa’s state park system. Book early for summer weekends!
| Site Type | Count | Hookups | Notes |
|---|---|---|---|
| Full Hookup | Limited | Water/Electric/Sewer | Best for large RVs; book way ahead |
| Water/Electric | ~35 | Water + Electric | Most common; good for tent or RV |
| Non-Electric | ~10 | None | Tent camping; more private |
Campground Amenities
- ✅ Modern restrooms with showers
- ✅ Dump station
- ✅ Playground
- ✅ Short trail to beach
- ✅ Paved roads suitable for biking
- ✅ Sturdy picnic tables
Season: April through October. All sites 100% reservable. Closed November through March.
Swimming Beach
The park’s beach offers supervised swimming during summer:
- 🏊 Season: Memorial Day through Labor Day
- 👙 Facilities: Modern bathhouse
- 🚶 Access: Short trail from campground
Clear Lake Town
The town of Clear Lake (population ~8,000) offers classic Iowa resort-town charm:
- 🎸 Surf Ballroom: National Historic Landmark where Buddy Holly, Ritchie Valens, and The Big Bopper played their final concert on February 2, 1959 – “The Day the Music Died”
- 🍽️ Dining: Main Street restaurants offering local fare
- ⛴️ Lake Activities: Marinas rent pontoons, fishing boats, jet skis
- 🎉 Events: Summer concerts, festivals throughout the season
Best Time to Visit
| Season | Highlights | Notes |
|---|---|---|
| 🌸 Spring | Walleye season opens; pike in shallows | Water still cold for swimming |
| ☀️ Summer | Beach open; all facilities; yellow bass action | Campground very busy |
| 🍂 Fall | Muskie season; walleye resurgence | Campground less crowded |
| ❄️ Winter | ICE FISHING – Clear Lake’s specialty! | Campground closed; day-use open |
Frequently Asked Questions
Why is Clear Lake so clear?
It’s a natural glacial lake fed by springs, with a sandy/gravel bottom and reduced agricultural runoff thanks to conservation efforts since 2008.
Can I rent a boat?
The state park doesn’t have rentals, but several marinas in town rent pontoons, fishing boats, and jet skis.
Is ice fishing popular?
Extremely! Clear Lake is one of Iowa’s premier ice fishing destinations. Permanent fish houses dot the lake each winter, and the local community supports visiting anglers with guides and rental houses.
What’s the Surf Ballroom?
A National Historic Landmark in Clear Lake where rock ‘n’ roll legends Buddy Holly, Ritchie Valens, and The Big Bopper played their final concert on February 2, 1959, before dying in a plane crash hours later – “The Day the Music Died.” Tours available.
💧 Discover Iowa’s Clearest Lake
Clear Lake has been a beloved Iowa vacation destination for generations. The crystal-clear water, excellent fishing, and historic town make it a year-round destination.
📍 Address: 2730 S Shore Dr, Clear Lake, IA 50428
📞 Phone: (641) 357-4212
🌐 Reservations: iowastateparks.reserveamerica.com
Explore More Iowa State Parks
Clear Lake 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.
Make it a road trip: Pair a visit with McIntosh Woods State Park (a short drive away) or Pilot Knob State Park (a short drive away).
⛺ Camping at Clear Lake State Park: Campgrounds & Cabins
| Campsites | 153 sites — 131 standard electric sites (20/30/50 amp), 16 full hook-up sites, 5 standard non-electric sites, and 1 electric-with-water site. Two modern restroom/shower buildings and two sanitary dump stations. |
|---|---|
| Pets | Pets allowed at standard campsites. |
| Reservations | 100% reservable; book online at iowastateparks.reserveamerica.com or call 641-357-4212. Reservations accepted until 10:00 p.m. CST the day of arrival. Statewide DNR booking window is 3 months ahead of arrival. |
| Special sites | RV/equipment length 30-75 feet; pull-through sites accommodate up to 75 feet. No equestrian or boat-in sites. |
| Season notes | Campground open April 1 - November 30, closed December - March. |
Camping questions about Clear Lake State Park
Can you camp at Clear Lake State Park?
Yes. Clear Lake State Park has 153 campsites. 131 standard electric sites (20/30/50 amp), 16 full hook-up sites, 5 standard non-electric sites, and 1 electric-with-water site. Two modern restroom/shower buildings and two sanitary dump stations.
How do you reserve a campsite at Clear Lake State Park?
100% reservable; book online at iowastateparks.reserveamerica.com or call 641-357-4212. Reservations accepted until 10:00 p.m. CST the day of arrival. Statewide DNR booking window is 3 months ahead of arrival.
Are pets allowed at the Clear Lake State Park campground?
Pets allowed at standard campsites.
Source: iowadnr.gov (verified July 2026). Details change seasonally — confirm when booking.
🐾 Dogs & Pets at Clear Lake 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 Clear Lake 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 Clear Lake State Park
From our editorial guides, matched to this park’s activities:
