One choice for you will be a variety you probably haven't heard of before - Petite Amie. It is a cold hardy variety good to about -30F so will certainly be good for your location. It is a bit slow to establish but once growing well puts out a very nice crop of beautiful white grapes. It is an extremely floral and fragrant grape and when sweetened makes a very nice Moscato type wine. I also do it as a totally dry white wine. The sweet version sells a bit better, but both are really popular and I run out quickly each year.