I never wanted to do summer (We are in PA). But as we have fallen more and more in love with WDW and want are now trying to go yearly, it has to be summer. I won't take my daughter out of school now that she's in middle school. We like to go for 10-14 days and that is not feasible during the school year, so summer it is. We went last June, I thought it was going to be miserable and it really didn't seem all that different than our October and November trips, a little more rain, but even that wasn't all that bad.
We are going the last two weeks of August since we don't start school til after Labor Day and it's my 50th Bday trip!