Weather is probably a major factor when you plan your trip to Moosonee, and keep in mind that cheaper options are usually available when the weather isn't as good. 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.