Taking into account the local weather in Greycliff is an important factor for planning your visit, especially if you plan to spend your trip poolside. The hottest months are usually July and August with an average temp of 63°F, while the coldest months are February and December with an average of 24°F. The snowiest months in Greycliff are March, February, October, and January, with each month seeing an average of 12 inches of snowfall.