People come in from outside warning, "It's really hot out there." TV weatherpeople drone on and on about the heat index. Newspapers carry the inevitable stories about drinking fluids and limiting outdoor activities.
All of which, I'm sure, is helpful to people who've NEVER FUCKING EXPERIENCED JULY BEFORE!
It's summertime, folks. It gets hot. We know this, because we just lived through it a year ago. If you don't know enough to keep hydrated in this kind of weather, you're so fucking dense there's no way all the warnings in the world will get through to you. For the rest of this, these warnings are useless because we already know!
What's more, when the heat goes away, it can get cold. And even though the human race instinctively understands that when that happens, we should wear coats, the TV will be full of pasty, nondescript talking heads telling us to WEAR COATS BECAUSE IT'S REALLY COLD OUT THERE. Because, apparently, we can't remember to do anything without being told.