Not sure about the mounting to the house part, but one of our customers uses two tall oscillating fans (that she brings out as needed). They work beautifully, plus, if you need to use inside, they can be funtional there as well :)

Celeste

Are these weatherproof? Dont want to have to move them in and out...

Probably not... have you considered looking at marine fans?

Here is a link that might be useful: Weatherproof fans