Well, depending on which Weather Service you believe, it is a balmy -18 here but up by Susies, probably closer to -30.
Went out to start my car which I usually do in sub-zero weather, to lazy to go upstairs and put my pants on but did have on a long sleeve knit shirt.
Found out you should switch fan to defrost as having the floor heater fan blowing gets a bit nippy on bare legs; it is odd how while it feels cold, going out , sitting there doing it, you do not pay much attention to the cold as you are too busy concentrating on getting the car started and Idling, BUT once running when you walk back into the house, THEN all you think about is how nippy it is.
My brake light is on so it is probably a bad wheel cylinder; I spent too much money on Christmas and other stupid stuff so I will do the work myself but not till day time is above zero.