The heat has been extremely impressive, probably even more so in central and eastern Europe, at least when you factor in longevity. Warsaw, Poland, for example, is averaging a warmer June than NYC as of the 29th. The June average is 72.3F, a whopping +9.2 above their 63.2 June normal. There were only 8 days with a high temperature below 80, 5 90+ degree days (with the potential for a 6th tomorrow).