Source-backed summary
Hosmer Grove lies in the cloud belt of Haleakalā, just below the 7,000 foot level (2134m) in the Summit District. Be prepared for rain and cold weather.
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Amenities
About Hosmer Grove Campground
Hosmer Grove lies in the cloud belt of Haleakalā, just below the 7,000 foot level (2134m) in the Summit District. Be prepared for rain and cold weather. Nighttime temperatures can drop into the to near freezing (0°C); daytime highs average 50-65°F (10-18°C). The campground has picnic tables, barbeque grills, drinking water, and pit toilets. Overnight stays are limited to three (3) nights total for all Park areas in a thirty day period. Pets are not permitted in or around campsite facilities.