Taking into account the local weather in Lac Le Jeune 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 61°F, while the coldest months are January and December with an average of 24°F. The snowiest months in Lac Le Jeune are January, February, March, and December, with each month seeing an average of 10 inches of snowfall.