October is sort a transition time for the weather so it's possible it could be cold or it could be hot. Based on what I remember from the past several years, I'm willing to bet it will be hot or at least warm. It seems like the hot weather usually lasts until the end of October or November. You might need a sweatshirt or light jacket for the evenings unless there is a big heatwave which is very likely. You'll probably have to wait until right before your trip to see what the weather will be like but like I said, I'm guessing it will probably be fairly warm. Have fun planning your trip!