Somewhere around forty below
McG’s lived in some places one might fairly describe as Pretty Damned Cold:
Now, in Fairbanks we frequently saw 30 below, 40 below, one morning during our time up there it got down to 58 below. At certain low temperatures the difference between any one degree value and another becomes a matter of thermometric curiosity more than anything else. The Settled Science™ boffins assure us cold snaps like these are just a passing fad and by the time Wyoming becomes a coastal state the entire planet will be uninhabitable anyway. In fact I seem to recall being assured at one point that snowfalls are already a thing of the past.
We used to have a client in Fairbanks, a small nonprofit which would suspend its bimonthly meetings if the temperature was below -45°F.
And you’ll notice that none of the dullards predicting beach houses in Laramie have moved so much as twenty miles farther inland.
I suppose the biggest difference between a Wyoming winter and a Fairbanks winter is latitude; Fairbanks, just a couple of degrees south of the Arctic Circle, has sunrise and sunset all year round, but in December those events can practically both be observed during the same coffee break.
Kind of makes you wonder why there’s such a thing as Alaska Daylight Time.