It shouldn't be nearly as windy at worlds in July as it was last April. July and August typically have much calmer winds in Kansas than April.
I second that Tom. You'll be wanting some wind in July, even though it'll feel like a furnace...lol
I'm no meteorologist, but don't Spring / Fall winds have more umph than summer winds due to the temperature and the weight of the air. Or am I just full of it?