Yeah, I hate this. The title (with the words "cold climate"), the numbers (below 20 degrees) and then talking about Finland (where degrees are definitely Centig

Yeah, I hate this. The title (with the words "cold climate"), the numbers (below 20 degrees) and then talking about Finland (where degrees are definitely Centigrade) just creates too much cognitive dissonance. If you're writing an article about temperatures, and you want to use Fahrenheit, please actually say so, otherwise you'll have all your readers from 90% of the world's population looking at you oddly.