Climate Grand Gulch's environment can be extremely harsh at certain times of the year. You will probably find spring and fall to be the most comfortable periods. May. The weather is hot from June through August and it is not uncommon for the temperature to rise past 110 degrees Fahrenheit. Summer rains come in late July or early August, bringing flash flood hazards. In the winter months, snow and ice cling to the canyons, and temperatures often fall below zero.
Middens are extremely fragile and contain important archaeological information.
Walking over them will cause damage. If a trail has been built across a site, stay on it. Foot traffic causes erosion that may undermine ruin walls. Climbing on roofs and walls can destroy in a moment what has lasted for hundreds of years. Make your camp well away from ruins and rock art sites.