Currently, my Northernmost reader is from Stockholm, Sweden. My Southernmost reader is currently someone from Melbourne, Australia. I have a regular reader in Japan, and, I'll be jiggered, several regular readers on the African continent. (I love you, Djibouti! You too, Botswana!
On the North American Continent, two of my peeps battle it out for Northernmost readers from North America. They hie from Prince George, British Columbia and Edmonton, Alberta, both in Canada. I don't know which is technically the more-northerly of the two...I imagine, if I tried, I could find out the latitude of both communities and name one the victor, but hell -- people in Prince George and Edmonton already have enough to deal with by way of cold and snow and bear maulings and the like. I'm not gonna make them fight it out. They are both "Ball-Freezing Cold".
I do wonder if it is as cold in Prince George or Edmonton as it is in Stockholm.