December 2015 was warm. This chart is a calculation of growing degree days from December to January for each year starting in 2007. In 2015, December accounted for the bulk of growing degree days at the Zanesville weather station. This is base 50 with no upper limit. Generally speaking, we expect few if any recorded growing degree days in this time period.
I present this just out of interest and curiosity having received several anecdotal reports of various plants, especially bulbs, showing signs of life that we usually do not see until March and April. By comparison, in April of 2015 there were 132 growing degree days.
Click on the picture of the chart to see a larger image.
