Planning for the weather is an important factor for making your trip to Moosonee a success, especially when you're splurging. The hottest months are usually July and August with an average temp of 57°F, while the coldest months are January and February with an average of 6°F. The snowiest months in Moosonee are April, January, February, and March, with each month seeing an average of 36 inches of snowfall.