I guess it is all relative. In the mountains of Maryland, we'll see at worst a few days that drop to 0°F; that's pretty unbearable. I couldn't imagine -40°. I've heard at that temp if you spit you can hear it crackle in the air, as it freezes before hitting the ground.

Pioneer PDP-5020FD, Marantz SR6011
Axiom M5HP, VP160HP, QS8
Sony PS4, surround backs
-Chris