Some winter statistics over last 4 seasons for my Nebraska station.
Dec, Jan, Feb. 2017-2018 was coldest with mean temperature 21.5° , 2016-2017 mean 24.1°, 2015-2016 mean 27.8°, 2014-2015 mean 25.3°.
Coldest single month was also this year February 2018 mean 17.9°. Next coldest month was Dec 2016 mean 19.2°.
Snowiest month was February 2017 20" which also recorded most snow single storm 14" .