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 Dorris: The hottest months are usually July and August, with an average temperature of 19°C, while the coldest months are December and January, with an average of 1°C. The snowiest months in Dorris are January, March, February and April, with each month seeing an average of 19 cm of snowfall.