The technique of triangulation of station data allows a neat way of visualising regional “climate change” and also the year to year variation. Here are two animations for Europe. First a replay of 2016.
The second animation shows all winter January temperatures from 1880 to 2016. Extreme winters of 1942, 1947, 1963 and even 2010 are particularly noticeable. Scale shown is Blue to Red -10C to +10C from normal. Black are extreme temperatures out of scale.