Weather is probably a major factor when you plan your trip to Temiscouata-sur-le-Lac, but bear 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 temperature of 16°C, while the coldest months are January and February, with an average of -9°C. The snowiest months in Temiscouata-sur-le-Lac are April, February, January and March, with each month seeing an average of 192 cm of snowfall.