Hot as what?

There has been a recent hot spell in So Cal. The other day we were outside and Jon says "it is hot as Hades" to which Avery replies, "It is hotter than Katie's, because in Alabama there were thunder storms and clouds. But today is just hot. Hotter than Katie's".
Jon and I just smiled at each other. She cracks me up sometimes. Most of the time I forget what she says though.