Chateau Montelena Winery
Weather

The Influence of Weather

In order to grow the highest quality wine grapes possible, we start by planting the right grape in the right place. Since the grapes that we work with at Chateau Montelena do not all have the same requirements, we have selected vineyard sources throughout the Napa Valley that have perfect conditions for growing each of those grapes according to our style and philosophy. One of the most influential determining factors in this selection process is weather.

Calistoga District
Montelena Estate Cabernet Sauvignon
Montelena Estate Zinfandel
Napa Valley Cabernet Sauvignon

The Calistoga district is the Northern Terminus of the Valley where the Vaca and Mayacamas ranges that form the eastern and western boundaries of the valley converge at Mount St Helena. The northern end of the valley has higher daytime temperatures than the southern end, where cooling breezes wash up from San Pablo Bay, making the Calistoga district an ideal environment for producing powerful red wines. The valley becomes very narrow as it approaches Calistoga and the interplay of air movements from these mountain ridges creates a variety of mesoclimates. Our Napa Valley Cabernet Sauvignon, produced from grapes grown in several sites within Calistoga, represents the district’s diversity while our Montelena Estate Cabernet Sauvignon and Zinfandel express the distinctive qualities of the Montelena Estate vineyard, a single site within the district.

Located at the northern tip of the Calistoga district, the Montelena Estate vineyard boasts a unique mesoclimate. Because the vineyard is positioned right at the foot of Mount Saint Helena, the highest point of elevation in the Napa Valley, the cold air from the mountain’s peak washes down into the vineyard at night. During the growing and ripening months temperatures can be 95° F during the day and 45° F at night. This 50-degree daily temperature swing creates red wines that are rich and powerful, yet elegant and long-lived. The heat of the day allows the grapes to ripen and develop complex flavors, while the cooling night air maintains the higher-acid, lower-pH levels critical to a balanced wine.

Oak Knoll District
Napa Valley Chardonnay

We grow our Chardonnay grapes in a climate most suitable for that grape variety. The dramatic temperature fluctuations in our Estate vineyard would produce wines that are too strong for the style of Chardonnay that we like to make. For this reason, our Chardonnay grapes are grown in three contiguous vineyards at the southern end of the valley, known as the Oak Knoll District, midway between the towns of Napa and Yountville. Here the influence of the bay keeps the climate moderate, warmer than the Carneros region but cooler than areas upvalley. This provides the ideal temperature range for producing Chardonnay grapes with the perfect balance of sugar and acid levels to allow minimal cellar manipulation. The result is a Chardonnay characterized by elegance, balance, delicate fruit flavors and a crisp, persistent finish, the hallmarks of Chateau Montelena Chardonnay.

Vintage Weather Summaries

Seasonal Weather Updates