In US, like many other countries, they have 4 seasons, which are Winter, Spring, Summer and Fall while in Thailand, we have Summer, Rainy and Winter. In fact, we Thai people usually have a joke on this and we list the new seasons as Hot, Hotter and Hottest. lol..:) The temperature between each seasons in US. is quite different especially the north states. You should check the weather such as www.weather.com before come to US. to make sure that you have the right outfits before coming here.