You might spend a lot of your holiday inside, but if you want to see more of the area, looking at local weather trends is a good idea. The hottest months are usually July and August, with an average temperature of 19°C, while the coldest months are February and January, with an average of -3°C. The snowiest months in Stanwood are January, March, December and November, with each month seeing an average of 31 cm of snowfall.