Taking the local weather in Granite into account is an important factor for planning your visit, especially if you plan to spend your trip by the pool. The hottest months are usually July and August, with an average temperature of 12°C, while the coldest months are December and January, with an average of -9°C. The snowiest months in Granite are January, February, March and April, with each month seeing an average of 67 cm of snowfall.