Taking into account the local weather in Latham 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 68°F, while the coldest months are January and February with an average of 28°F. The snowiest months in Latham are January, March, December, and April, with each month seeing an average of 7 inches of snowfall.