 It broke the previous record of 0.1 °C in December 1981.December 2010 has the lowest CET, -0.7 °C, since a CET of -1.1 °C was recorded for February 1986.December 2010 can also be confirmed to be the coldest December for 120 years, since a monthly CET of -0.8 °C was recorded for December 1890 and the second-coldest December since records began in 1659.