Taking into account the local weather in Genoa 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 66°F, while the coldest months are December and January with an average of 32°F. The snowiest months in Genoa are March, February, January, and April, with each month seeing an average of 6 inches of snowfall.