Latitude 38.6130° N, Longitude 122.7° W
AREA OF ALEXANDER VALLEY
Total Acres: 76,915 acres / 331 km2
Total Vineyard Acres Cultivated:14,449 acres / 5847.3 hectares
Maximum Elevation: 2572 ft (783.9 m)
Minimum Elevation: 134 ft (40.8 m)
Median Elevation: 628 ft (191.4 m)
CLIMATE
Average Growing Season: April 1 – November 1
Average Growing Season Temperature: 72°F / 22.2°C
Average degrees days for AV AVA: 1,834
Average annual precipitation: 32 in (81.28 cm)
DAYLIGHT
Maximum hours of daylight: 14.51 (summer solstice)
Average hours of daylight during growing season: 12.32
FROST
Average number of frost-free days: 240
On average, last frost occurs: During the second week of April
On average, first frost occurs: During the first week of January
AVA FACTS
Number of Independent Winegrowers: 82
Number of Bonded Wineries: 31
VARIETALS GROWN
Predominant Red Varietal: Cabernet Sauvignon
Predominant White Varietal: Chardonnay
Other Notable Varietals: Zinfandel and Merlot