What To Pack and Wear
From frost to sunburn...
On the South Rim in summer, hot days, cool nights with possible frost through May. Frost possible every month on the North Rim. For hiking below the rim, guard against the sun and heat with a wide-rimmed hat, sunscreen, and a gallon of water a day. Wear sturdy hiking boots, take a basic first-aid kit for scratches and foot blisters. Trekking poles are a great hiking aid, especially with a heavy pack.