Planning for the weather is a good way to make your trip to Bonnyville relaxing and enjoyable, especially when you’re splurging. The hottest months are usually July and August, with an average temperature of 15°C, while the coldest months are February and January, with an average of -11°C. The snowiest months in Bonnyville are March, February, April and January, with each month seeing an average of 85 cm of snowfall.