The mean temperature for December was 16.2°F, which is 0.4°F above the average of 15.8°F, according to weather researchers at the West Central Research and Outreach Center in Morris. The high temperature for the month was 35°F which occurred on three days, December 4th, December 5th, and December 23rd. The low temperature for the month was -16°F which occurred on December 12th.
The highest temperature recorded in December at the WCROC from 1886 to 2018 was 69°F on December 6, 1939. The lowest temperature recorded historically was -35°F which occurred on December 22, 2000.
Precipitation for the month totaled 1 inch, which is 0.32 above the average of 0.68 inches. A total of 7.2 inches of snow fell. Currently, we have 6 inches of snow on the ground. The frost depth was reported at 14 inches on December 30th. There were 1514 heating degree days recorded for December.