-30 F *according to an aviation expert interviewed on radio.
And if you are wearing shorts, I guess that it pretty cold.
I have been in -30...but wearing a huge parka and not out in it that long. Everything in your nose freezes when you breethe.
Yeah, but even at -30 it takes a living, warm body a long time to convert into "frozen solid." I don't think the plane was airborne long enough for that.
I'd look for a modification of this particular claim before long.
That's cold enough.
-30F is about as low as it goes in SEWisconsin during January. Calls for multiple layers of clothing not to mention vigilance about leaning exposed skin in the breeze.