Idaho State Parks · Idaho
Massacre Rocks State Park
Idaho State Parks · Idaho, United States
- Sites
- 42
- Hookups
- 42 electric, 42 with water
- Group sites
- Yes
- Drinking water
- Yes
- Restrooms
- Yes
- Showers
- Yes
- Dump station
- Yes
- Pets
- Yes
- Elevation
- 4,304 ft
- Dark sky
- Bortle class 1
- Cell coverage
- T-Mobile good · AT&T good · Verizon good (carriers' 4G LTE filings to the FCC, 2025-12; not measured here)
- Lake
- Snake River
- Nearest town
- American Falls
- Address
- 3592 N Park Ln
- Phone
- 208-548-2672
- Activities
- Biking, Bird Watching, Boating, Climbing, Disc Golf, Fishing, Hiking
About
Massacre Rocks State Park is an Idaho State Park with 42 campsites available for camping.
Fees
Idaho State Parks and Recreation's published statewide camping rate (tax inclusive): Basic sites $14-$24/night, Electric sites $26-$32/night, Full Hook-Up sites $28-$40/night, larger-capacity Companion sites $46-$80/night. Plus a $7/vehicle/day Motor Vehicle Entrance Fee ($14 for non-residents at Bear Lake, Farragut, Hells Gate, Priest Lake & Round Lake specifically; $7 for non-residents elsewhere) and a $10/reservation transaction fee.
Weather, month by month
| Month | Typical high | Typical low | Coldest night | Hottest day | Years with a night below 32°F |
|---|---|---|---|---|---|
| January | 34° | 20° | -11° | 48° | 11 of 11 |
| February | 37° | 24° | 3° | 54° | 11 of 11 |
| March | 49° | 29° | 11° | 76° | 10 of 11 |
| April | 56° | 35° | 24° | 74° | 8 of 11 |
| May | 69° | 47° | 33° | 82° | 0 of 11 |
| June | 79° | 55° | 40° | 98° | 0 of 11 |
| July | 94° | 66° | 49° | 104° | 0 of 11 |
| August | 91° | 63° | 53° | 100° | 0 of 11 |
| September | 79° | 55° | 42° | 91° | 0 of 11 |
| October | 63° | 41° | 27° | 80° | 4 of 10 |
| November | 51° | 31° | 13° | 65° | 8 of 10 |
| December | 34° | 23° | 8° | 58° | 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
- Pipeline Campground · Bureau of Land Management · 6 mi
- Mill Flat Campground · USDA Forest Service · 17 mi
- Sportsman's Park · City, County & Regional Parks · 19 mi · 36 sites
- Sublett Campground · USDA Forest Service · 24 mi
- Lake Walcott State Park · Idaho State Parks · 25 mi · 40 sites
All public campgrounds in Idaho · Every state and province · Facts read from the operator 2026-08-25. Confirm fees, rules and current status with the operator before you go.