I think this is because most people tend to make a connection through talking about the weather. Hence, picking a side is a normal thing to do, are you for the

I think this is because most people tend to make a connection through talking about the weather. Hence, picking a side is a normal thing to do, are you for the weather or against it? For people that don't live in Seattle, I find that all they really know about Seattle is their mysterious rainy weather and the space needle, of course.