It's hard to dress correctly.
I recall one summer, maybe 5 years ago, ten days straight above 35 with day time temps in the 40s. Trees were dying from heat stress after a ten year draught.
Ah, this is it, from 2009:
Adelaide, South Australia Edit Average daily maximum 27 January – 7 February: 40.5 °C (104.9 °F) – (11.1 °C (20.0 °F) above average)[9] 13 Consecutive days over 33 °C (91 °F) 6 Consecutive days over 40 °C (104 °F) 4 Consecutive days over 43 °C (109 °F)
That's right, 13! consecutive days above 33!
https://en.m.wikipedia.org/wiki/Early_2009_southeastern_Aust...
(Lots of high 30's, but no 40+)
The downsides being ticks becoming common, warmer temperatures enabling more diseases spreading in both human and animal populations, a few native animals dying (they can't breed without certain things such as ice, and their natural defense mechanisms do not work), and Gulf stream probably slowing and causing a new ice age. Ah yes, there's always that. But then again, not going to happen on my lifetime so who cares... :)