Tags: Wine Region.
The Dunnigan Hills AVA is an American Viticultural Area located in the Dunnigan Hills in Yolo County California. Located in the northwest portion of Yolo County the wine region has a Mediterranean climate that is less prone to frost than other parts of the Sacramento Valley. The largest winery in the Dunnigan Hills is R.H. Phillips which has a 1300 acres (526 ha) estate vineyard.