The 10 Coldest Days of 2017 [degs C]

10.  7.0   December 9
  9.  6.9   December 8
=7.  6.7   January 20 & December 11
  6.  6.3   February 12
  5.  6.1   January 2
=3.  5.9   January 21 & February 10
  2.  5.8   January 3
  1.  5.6   February 11