City, County & Regional Parks · Idaho

Horsethief Reservoir Campground

City, County & Regional Parks · Idaho, United States

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Season
May 19 to early September
Cost
$20/night per site, cash or check, paid on site.
Max RV length
30 ft
Restrooms
Yes
Elevation
5,043 ft
Dark sky
Bortle class 1
Lake
Horsethief Reservoir
Nearest town
Cascade
Phone
208-382-4425

About

Valley County Recreation Department semi-primitive campground about 9 miles east of Cascade and 75 miles north of Boise. No electrical, pressurized water, or sewer hookups at individual sites; suitable for tents, vans, and trailers/motorhomes 30ft and smaller. Multiple ADA campsites and restrooms across west-side loops, dumpsters at King's Point, Osprey, and Trout Landing, and boat launches on both sides of the reservoir. Season May 19 through Labor Day weekend (longer, weather permitting). First-come, first-served, cash or check only. Semi-primitive camping in six loops - King's Landing, Bear Knob, Easters Cove, Timber Bay, Osprey and Trout Landing - with vault toilets, no drinking water, no electric hookups and no dump station. Suitable for tents, vans and trailers or motorhomes up to 30 feet, with some sites shorter. Four accessible campsites. First-come, first-served. Open from around 19 May to Labor Day weekend, longer if the weather holds.

Weather, month by month

MonthTypical highTypical lowColdest nightHottest dayYears with a night below 32°F
January33°17°-4°44°11 of 11
February33°20°-7°44°11 of 11
March40°26°8°55°11 of 11
April44°28°16°67°11 of 11
May55°33°23°74°9 of 11
June70°44°31°85°1 of 11
July83°55°41°94°0 of 11
August82°54°42°92°0 of 11
September70°46°36°83°0 of 11
October54°34°7°73°7 of 10
November43°27°-3°61°9 of 10
December33°15°2°44°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.

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All public campgrounds in Idaho · Every state and province · Facts read from the operator 2026-09-04. Confirm fees, rules and current status with the operator before you go.