You no longer associate bridges or rivers with water. You know a swamp cooler is not a happy hour drink. You can hear the weather forecast of 105 degrees without flinching. You discover in July it only takes two fingers to drive your car, because your steering wheel is so hot. You can make sun tea instantly.
Hotter water comes from the cold water tap than the hot one.
It's noon in July, kids are on summer vacation and yet all the streets are totally empty of both cars and people. You actually burn your hand opening the car door. Sunscreen is sold year round, kept right at the checkout counter. Sunscreen with less than 50 spf is a joke. You put on fresh sunscreen just to go check the mail box.