The ave high for Nov for Lismore is 28. In the 7-day forecast period that will be exceeded by an accumulated 24C.

Interestingly, the ave low is 16C. In the same time-frame the accumulated differential is -29C! (down to 9C this morning)

So it all depends on how you look at the numbers. If you said that over a week the average temp differential is -5C then you'd say 'what global warming?', but it doesn't account for the extremes we're seeing here. Hotter days and colder nights - presumably due to drier air - which is a key ingredient in bushfires and something that is not normally experienced here.