Taking into account the local weather in North Rock Springs 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 20°F. The snowiest months in North Rock Springs are March, January, February, and November, with each month seeing an average of 10 inches of snowfall.