Yellow Barn Winery is the only winery in Watertown, New York. Watertown has one of the most challenging climates to grow wine grapes in the United States. We can have snow in late May or June and frost in early September. We also can get as cold as minus 40 degree F. Take a look at or photo gallery below. We are planting new Grapes, Frontenac Gris, Bianna and Marquette.