Weather, like form, is temporary; climate, like class is permanent. The statistics of weather are an important constituent of climate change predictions, but not the only element in the algorithm. When things get too hot, too wet or too cold offical bodies issue weather warnings.
45.8 degrees Celsius is very hot. For those you think in Fahrenheit, it is 114.44 degrees and that was the experience of the inhabitants of Sydney in Australia yesterday. It is the hottest temperature ever recorded. The Australians must cope with record numbers of bush fires in Victoria, New South Wales and Tasmania. Relief is on the way as local meteorologists predict rain, which will lower the record temperatures. There is an official weather warning.
In the United Kingdom we have had our first snowfall of the winter, with much of it covering old South Wales. There is an official weather warning.
The weather will change from day to day and week to week; the climate it seems used to change over the millennia; now it seems to change over the centuries and soon, very likely will change over the decades. That is the real weather warning.