If ain't broke, don't fix it.
Whatever 12-month period threads like this are based on, someone, somewhere will find a reason to want a change; someone. somewhere will be advantaged or disadvantaged.
I seem to be the only poster from the southern hemisphere who posts in these threads (too lazy to read back through the thread, someone may be along soon to correct me), I'm comfortable with being disadvantaged as AUS temps are never gunna be as low as some northern hemisphere temps (but hey, that's small penalty to pay for living in the best damn and luckiest country in the whole world).
And in the end, it doesn't matter where the lowest recorded / reported temps are, it's more a matter of who and what was reported. That's my opinion, and on here it is correct - until it's not, which is better than at home where I'm not generally even allowed an opinion, and on the rare occasion I am, it's wrong.