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Napa Valley Weather: Napa Valley September Weather
With September comes the crush. The Napa Valley grape harvest is possibly one of the most popular event destinations in California. The term Wine Country automatically invokes a vision of the Napa Valley in all its glory. The wineries are in full swing as the crush reaches its crescendo, their doors are open and all are encouraged to witness this massive undertaking first hand.
In the town of Napa, the average temperature in September is 67 degrees, while the average high is 81 degrees and the average low temperature is 52 degrees. The average rainfall for September is 0.4 inches. Temperatures and rainfall in Yountville and Oakville, several miles north of Napa, would be roughly the same as in Napa.
In September, the average temperature in Calistoga is 68 degrees, the average high is 85, and the average low is 50 degrees. The average rainfall in Calistoga for September is 0.1 inches. These figures reflect a close approximation to those in St. Helena, just eight miles south of Calistoga.
If you are coming from outside California, you will probably be surprised to learn that September and October can often have periods where temperatures reach into the 90’s during the day. Indeed, these months are the warmest of the year in San Francisco, as the fog is usually brief giving a chance for the temperature to warm during the day. Besides dozens of vineyards and wineries great and small, Calistoga has a climate warm enough to sustain lushly fronded palm trees bringing to mind the temperate Mediterranean.
One of the greatest things about the summer climate in Napa Valley is that regardless of how hot it is during the day, at night the temperature almost invariably cools down at night, making it perfect for sleeping. Yesterday, which was September 6, 2011, the temperature in Calistoga hit the mid 90’s, but this morning, the temperature at our house was in the mid 60’s.
One perfect September destination is Chateau Montelena on the north end of Calistoga, This famous winery offers it's beautiful grounds, complete with gazebos, a garden and its very own Jade Lake. The towering stone winery, a castle really, is the stunning backdrop to this beautiful estate. This is just one of many wineries that are not to be missed during crush.
