(BSh) or a hot-summer Mediterranean climate (Köppen climate classification Csa). Summers are hot, with a July average high of . Winters are cool, with average low temperatures below freezing in December and January. Around of rain falls each year, almost entirely in the winter months, though in some cases as much as this has fallen in a single month (as in January 1965 and December 2004), whilst in the year from July 1965 to June 1966 as little as fell. The wettest year has been 1955/1956 with as much as , though since 1959 the highest has been around in each of 1995/1996 and 2004/2005. Due to Shiraz' high elevation and low latitude, the UV index is extremely high during summer which is further exacerbated by the high frequency of sunshine. Despite being in a relatively dry climate, extreme weather is not a rare occasion. On 25 March 2019, flash floods from heavy rains has resulted in 19 deaths and over 200 injuries. The highest record temperature was on 3 July 2022 and the lowest record temperature was on 5 January 1973. Economy Shiraz is the economic center of southern Iran. The second half of the 19th century witnessed certain economic developments that greatly changed the economy of Shiraz. The opening of the Suez Canal in 1869 allowed the extensive import into southern Iran of inexpensive European factory-made goods, either directly from Europe or via India. Farmers in unprecedented numbers began planting cash crops such as opium poppy, tobacco, and cotton. Many of these export crops passed through Shiraz on their way to the Persian Gulf. Iranian long-distance merchants from Fars developed marketing networks for these commodities, establishing trading houses in Bombay, Calcutta, Port Said, Istanbul and even Hong Kong. Shiraz's economic base is in its provincial products, which include grapes, citrus fruits, cotton and rice. Industries such as cement production, sugar, fertilizers, textile products, wood products, metalwork and rugs dominate. Shirāz also has a major oil refinery and is also a major center for Iran's electronic industries. 53% of Iran's electronic investment has been centered in Shiraz. Agriculture has always been a major part of the economy in and around Shiraz. This is partially due to a relative abundance of water compared to the surrounding deserts. Shirāz is famous for its carpet production and flowers as well. Viticulture has a long history in the region, and Shirazi wine used