[fsloth]

-18 C night and day is not that cold. It does not stop any daily activities - like kids playing outside. Going near -30 C and below - with regular "urban" winter clothing - that starts to modify ones routines. Don't look at the statistics, observe the real effects.

[hessenwolf]

It depends on a few other factors, among which are wind and humidity. -18 C in Munich is lovely for a stroll. 8 C on the west coast of Ireland is omfg.