Looks like the weather there is great right now!!!!
http://www.radisson.com/arubawebcam
I am going to be there next week!! Sunday can't come fast enough. As what everyone says, don't sweat the weather. Even if you want to look at the weather on weather.com which is what you are looking at. It only says 30% chance. A little passing rain to let the kids cool off sounds fine to me!!!!