Listening to the radio in hot weather?

Having always been baffled at why radio stations could give forecasts like:

"a great day - 36 degrees"

my brother said to me that the reason radio stations praise horrible hot weather is that it serves to increase their audience. My brother thinks that people are most likely to listen to the radio in terribly hot weather when they have nothing to do - including to walkman on the beach.

This is a strange idea, but if one has air conditioning it would be very easy to listen to radio doing very little in the type of dreadful weather GOLD FM praise incessantly. On lovely days of fifteen or sixteen or seventeen degrees, people want to be active and they will not listen to the radio!

I feel it's still no excuse for praising dreadful weather!