September environment in Napa Valley is marvelous. The commonplace temperature in Calistoga is 69 degrees, with an ordinary high of 88, and a normal low of 50 degrees. The common precipitation in Calistoga for September is 0.3 inches. You can rely upon sunlight an ordinary of 10 hours out of every day.
Expecting you are coming from outside California, you will in all probability be flabbergasted to find that September and October can regularly have seasons of temperatures in the 90’s. Without a doubt, in 2014, the temperature showed up at 90 degrees or higher eight days in the month. Despite the manner by which warm it is during the day, the temperature unendingly chills off around night time.
In the town of Napa, the common temperature in September is 67 degrees, while the ordinary high is 81 degrees and the normal low temperature is 52 degrees. The common precipitation for September is 0.4 inches. Temperatures and precipitation in Yountville and Oakville, a couple of miles north of Napa, would be by and large identical to in Napa. Chances are splendid that you will not at any point see a drop of storm during your visit.