I wonder at the native speakers you have contact with. If I get in my car and I can't put my hands on the wheel because it is too painful, I say the weather is HOT. If I feel am going to melt like ice, I use the word 'hot' quite freely. When I was in India in May, it was 50 degrees during the day. That is NOT warm - it is unbearably hot to me and 'hot' is the word that I used - often.

在我住的地方(路易斯安那州南部)很多年前(我小的时候)我们不但说天气hot， 而且, 天气很热的时候，常说 it's hot hot.我认为美国其他地方的人不那么说， 就是 我们的法国文化的习惯。