Don't think I want your temps but we are supposed to be -7 Wed night. Once it gets below 0 it really doesn't matter what the numbers are!! It is all brittle cold!! We do get that cold here in Iowa some winters. Not that cold this year yet during the day but we have been known to have it.
Don't know which is worse brittle cold or deep snow. I would just as soon not have either one!!
Hoping you stay warm Magpie Feather!!