Expect it to be changing the entire time you are there. I would plan on bringing a jacket that blocks the wind as well as fleece or other types of jackets for warmth. These can then be layered. You might also include a hat and gloves. The wind off the lake can be brutal. Of course, it might also be summer-like with shorts and t-shirts being fine. Keep checking the Weather Channel and plan for it all.

Stacy - the weather forcast for the next 10 days up here is looking a bit on the cool side...I'd say highs only in the 50's -60's. The nights have been downright cold....40's! I agree that clothes to layer are your best bet...and a lot will have to do with how many "outdoor" activities you will be participating in! The color should be just perfect then!