Weather can make or break a roadtrip, so we've gathered some data about year-round temperatures in Redstone to help you plan yours. The hottest months are usually July and August with an average temp of 67°F, while the coldest months are February and January with an average of 18°F. The snowiest months in Redstone are February, April, January, and March, with each month seeing an average of 6 inches of snowfall.