It has been cold this winter

Was working in the conex boxes today.  I have some environmental monitors in each one and I checked the temperature record.   It started getting really cold on December 18th.  Internal temp went down below 20°F

The lowest recorded temp was on December 21st at 8:58AM - 5.27°F

Unusually cold - it will frequently get down to 15° for a day or two.  (Fraser River outflow - more here)
This season was colder than usual.
Not coldest ever — there is a long history of low temps — but still, unusual...