I listen to the words folk use - carefully. I listen to what they're saying and when it comes to weather reporters and forecasters I listen especially carefully. Often in Arizona the local forecasters will talk excitedly about 'record-breaking' temperatures when they mean that there MIGHT be a high - by a tenth of a degree, statistically insignificant - in certain areas on a particular anniversary day. In other words it might be fractionally hotter on a particular day than it was on the same date a year ago..... As dear Frank Carson use to say "It's der way I tell 'em."
Blame hyperbole, blame the programme controllers desperate to catch viewer attention, maintain the ratings when actually there's nothing to be said of any true importance. "It's going to be very hot today, similar to the way it was very hot yesterday and the day before that...." That would sum up Valley weather reports for the whole Metro Phoenix area and beyond much of the time. But, no, the weather has to be 'bigged' up so it's the hottest, windiest, wettest! I'm sure AZ isn't exceptional because I've seen similar in other states and here at home in the UK too.
It makes me wonder just how many of the record highs, the record lows, the heaviest rainfalls, the deepest snowpacks etc. there truly are - and I'm not a climate-change detractor. Behind the headlines there may be additional data that go on to tell us that the highest, lowest, wettest, windiest conditions (or what have you) are those recorded
since the last recorded ones.
Sometimes similar conditions will have occurred a few years or a few decades ago but the point is that similar extremes have usually happened before, sometimes long before humankind's activities on the present scale and with their present impact. But some won't have happened in recorded history or fossil records etc. (eg the polar ice caps, melting permafrost)
What may become the new normal, though, is that more extremes and more often will be experienced widely. Not necessarily the hottest but perhaps the longest hot period at an unusual time of the season. Perhaps the most intense rainfall over a longer-than-usual period than is usually experienced.
These are the weather extremes I think we'll face - more of them and lasting longer. Not relentlessly increasing temperatures - 'global warming' - but comparatively small increases but leading to massive impacts more often and for longer, sometimes in ways not experienced in earlier times.