Student Exchange Programs

I’m planning to be a high school exchange student for a year in monterrey. What is it like over there? How’s the weather. Will it be ok to wear jeans everyday? Will I ever need a thick sweater or jacket? How are the people? Are they inviting and friendly? What do they look like, wear, do for fun? Is it really a lot like the USA? If so, will I still get a good Spanish language and Mexican cultural experience. How is UDEM? Anyone know anything about the high school at UDEM? Do I have to wear a uniform? Is English sponken as much as Spanish is there? How’s the shopping? Tell me anything you know about Monterrey, please. Thanks.