If you’re looking forward to lots of outings with your partner, check out these details about year-round temperatures in Okotoks: The hottest months are usually August and July with an average temp of 59°F, while the coldest months are December and February with an average of 19°F. The snowiest months in Okotoks are March, January, February, and December, with each month seeing an average of 14 inches of snowfall.