If you're hoping to get lost in the rain on your romantic getaway, take a look at these details about year-round temperatures in Drayton Valley: The hottest months are usually July and August, with an average temperature of 15°C, while the coldest months are February and December, with an average of -9°C. The snowiest months in Drayton Valley are March, February, January and October, with each month seeing an average of 18 cm of snowfall.