Visiting local bars in Stanwood is more fun when you know what the weather holds. These rainfall averages and temperatures can help you determine the best time for bar-hopping. 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.