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Napa Valley is an American Viticultural Area (AVA) in Napa County, California.The area was established by the Bureau of Alcohol, Tobacco, Firearms and Explosives (ATF) on February 27, 1981, after a 1978 petition submitted by the Napa Valley Vintners and the Napa Valley Grape Growers Association.
The Calistoga AVA is an American Viticultural Area located in the northern portion of California's Napa Valley AVA.The appellation is distinguished by its volcanic soil, [3] high temperatures up to 100 °F (38 °C) during the day, and cool nights during the growing season due to breezes from the Russian River, causing the highest diurnal temperature variation in the Napa Valley—up to 50 °F ...
The list of snowiest places in the United States by state shows average annual snowfall totals for the period from mid-1985 to mid-2015. Only places in the official climate database of the National Weather Service, a service of NOAA, are included in this list. Some ski resorts and unofficial weather stations report higher amounts of snowfall ...
Instead of depicting a region as all one Winkler region (Napa Valley AVA being a Region III for example), spatial data summaries [3] show the Napa Valley having a full range of Winkler regions, 12% a Region II, 56% a Region III, and 30% a Region IV (whereas the table above shows one station in Napa, St. Helena as being a Region IV).
The southeastern regions have a hot arid climate (Koppen BWh), similar to that of the Sahara Desert. In the northern portion of the Mojave Desert on the east side of the state is Death Valley, which has recorded temperatures among the highest in the world. It is common in the summer for temperatures in the valley to surpass 120 °F (49 °C).
Pages in category "Climate of the United States by state" The following 18 pages are in this category, out of 18 total. This list may not reflect recent changes .
Type: American Viticultural Area: Year established: 1993 [1]: Country: United States: Part of: Napa Valley AVA: Other regions in Napa Valley AVA: Atlas Peak AVA, Calistoga AVA, Chiles Valley AVA, Diamond Mountain District AVA, Howell Mountain AVA, Los Carneros AVA, Mt. Veeder AVA, Coombsville AVA Oak Knoll District of Napa Valley AVA, Oakville AVA, Rutherford AVA, St. Helena AVA, Stags Leap ...
Over the contiguous United States, total annual precipitation increased at an average rate of 6.1 percent per century since 1900, with the greatest increases within the East North Central climate region (11.6 percent per century) and the South (11.1 percent). Hawaii was the only region to show a decrease (−9.25 percent). [89]