Oak Knoll Appellation Climate: Moderately warm, with temperatures commonly in the mid-90°F (34-35.5°C) range in high summer, but also still strongly affected by night and early morning fog which helps keep acidity levels good. East side of the AVA receives more of warmer afternoon sun.
Elevation: 75 to 500 ft (23 to 150m).
Rainfall: 35 inches (87.5cm) annually.
Oak Knoll Soils: Primarily sedimentary gravelly alluvial loams on the western side, with more volcanic but heavier soils on the eastern side. Low to moderate fertility and fairly deep, with average water retention.