Short sleeves and ties are generally considered to be inappropriate.
Some folks even consider short sleeves and ties to be rather redneck. Considering the fact that my neck is about as red as they get, I go against the grain, I generally wear long sleeves, and always with ties.

My theory has always been you can always roll up long sleeves, but you can't roll down short sleeves.

Same goes for jackets, you can always remove the jacket if you get hot, but if you don't have it, all you can do is shiver if you get cold, or look like a hick if things are formal.