Weather is probably a major factor when you plan your trip to Hatley, 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 63°F, while the coldest months are January and February with an average of 21°F. The snowiest months in Hatley are December, January, April, and February, with each month seeing an average of 13 inches of snowfall.