Austria, France, Germany, Poland and Switzerland announced their hottest Septembers on record on Friday, in a year expected to be the warmest in human history as climate change accelerates.
![Several European countries record hottest September temperatures ever](https://s.france24.com/media/display/cd6b1e86-5ec4-11ee-95d7-005056bf30b7/w:1024/p:16x9/AP23250572158917.jpg)
Austria, France, Germany, Poland and Switzerland announced their hottest Septembers on record on Friday, in a year expected to be the warmest in human history as climate change accelerates.