September is GORGEOUS where we live. Some say that it's the best time of year for the Central Coast (we're in Cali). The weather is generally around 65-70, though it can definitely get into the 80s in late September, and the wind is pretty
mild.
I actually was going for 9-10-11 because I have a thing for numbers, and it seemed fun. Well, our original venue that we booked during the first week of January 2010 had that date taken already (I know - wth?), so we took 9/24/2011 instead, as
24 is my lucky number.
We've since changed venues, but I just can't imagine using a different date now, so 9/24 it is! Now my FI only has to remember 2/24 for my bday and 9/24 for our anniversary. Dating anniversary is 9/20, so he doesn't even have to change months ;)
I like to make it easy on the guy.