Suisun Valley Grape Growers Association
Suisun Valley lies within the southern end of two ranges of the Coast Range, the Vaca Mountains to the east and the Mt. George Range to the west. Lengthwise, it stretches south to the marshlands of Suisun Bay and north it rolls up into Wooden Valley at the Napa County line.
Despite its inland location, Suisun Valley enjoys a coastal area climate characterized by cool moist winds from the ocean and the San Francisco Bay that blow almost continuously from May through early fall, while its proximity to Suisun Bay helps mitigate spring frosts.