National Weather Service United States Department of Commerce

Rochester Snow Depth Climatology

One measure of  "winter harshness" is the number of days that snow remains on the ground. The graphs below show the number of days during each snow season that certain snow depths were measured. These depths are for the early morning hours (0700 EST). The year on the bottom axis is the later snow season year.  


The average number of days for the past 76 winter seasons are: 

1 inch - 75.9 days       6 inches - 23.2 days     12 inches 5.8 days

ChartObject Number of days - 1 inch or more

ChartObject Number of days - 6 inches or more

ChartObject Number of days - 12 inches or more