If you’re hoping to get lost in the rain on your romantic getaway, check out these details about year-round temperatures in Sparwood: The hottest months are usually July and August with an average temp of 56°F, while the coldest months are December and February with an average of 16°F. The snowiest months in Sparwood are December, February, January, and March, with each month seeing an average of 13 inches of snowfall.