Interesting times we live in. Here in Chicago, there are 5 severe weather alerts for my area.
Wednesday (2019-01-30): low of -23ºF, with windchills of -50º to -55º
Monday (2019-02-04): high of +51ºF.
I've experienced colder windchills -- my record is -80º in Fargo, North Dakota in the late 80's / early 90s. I'm sure some of the arctic Indigo users may scoff, but this is pretty cold for this neck of the woods.