A new milestone was set as 2015 came to a close, the warmest December on record. However, technically the month may or may not have set the record, more on that in a moment.
Officially the average high for Boone was 56.19 at the Boone 1Se reporting station. Highs of 67 were recorded on back to back days, as were highs of 66. 13 days were in the 60s, 13 days topped out in the 50s, 3 days were in the 40s and only two days were in the 30s.
There were eight days that set or tied temperature records, including two days that set new highs, three days that tied 2nd place highs and two days that tied 3rd place highs.
So how is it that December 2015 may not have set the record? Looking back at weather records shows that December 1939 had an average high of 54.57, there are however 10 days of data missing for that month so it is possible that month could have been warmer than we know.
It is of note that the entire year of 1939 shows an average high of 66.09, which is still the all time record even with 13 days of data missing. 2015 ended with an average high of 61.8, making it tied for 8th for calendar years June 1, 1980 – the end of 2015.