Well, I'm not keeping records, but here (Czechia) the heat waves were really different from the past: twice in one summer for more than three weeks (in total),

Well, I'm not keeping records, but here (Czechia) the heat waves were really different from the past: twice in one summer for more than three weeks (in total), that simply never happened (I believe I remember reliably - public records agree -, because I don't have AC, so I have to consistently measure temperature and manage it by closing windows at 6 AM, closing the drapes, and during night by creating draft). The perception of past weather patterns truly is unreliable, but I don't care if I can discern between temperature averages; the more common occurrence of extremes is what matters. I don't know how anyone can look at the reports of fires everywhere and not be certain this wasn't happening at this rate even few years ago.