Taking into account the local weather in Hailin 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 January and December with an average of 10°F. The snowiest months in Hailin are November, January, December, and March, with each month seeing an average of 24 inches of snowfall.