The general advice is to plan for a 140-day growing season, beginning May 17 and ending October 5. Any transplanting of annual bedding plants in Bay Harbor before Memorial Day may involve an element of risk.
Surface winds prevail out of the North and Northeast from February to April and then West and Southwest for the remaining months. Over the course of the year, average wind speeds range from 0 to 14 mph (calm to moderate breeze), rarely exceeding 20 mph (fresh breeze).
Bay Harbor has almost 160 clear, sunny days per year with an additional 81 days of partly cloudy weather. Only about 80 days per year experience measurable precipitation, compared to the U.S. average of 102 days.
The average annual precipitation in Bay Harbor is slightly over 30 inches, compared to the U.S. average of 39 inches. The average annual snowfall is 124 inches, occurring primarily between December and February.