mostly covered and still today used for agriculture. Other important canals are the Rino, a torrent that coming from the mountains crosses the historic center of Virle Treponti and enters the Naviglio Grande at the highway of Treponti. Near the mouth of the Rino, from the waters of the Naviglio the canal Lupa flows through the countryside south of Treponti towards Castenedolo. From Botticino descends the torrent Rino Musia that crosses part of the northeast wooded area of the town and then enters the city of Brescia. Climate According to the Köppen climate classification, Rezzato has a humid subtropical climate (Cfa). Its average annual temperature is : during the day and at night. The warmest months are June, July, and August, with high temperatures from to . The coldest are December, January, and February, with low temperatures from to . Winter is cold but snowfall is rare; it mainly occurs from December through February. Summer can be sultry, when humidity levels are high and peak temperatures can reach . Spring and autumn are generally pleasant, with temperatures ranging between and . The relative humidity is high throughout the year, especially in winter when it causes fog, mainly from dusk until late morning, although the phenomenon has become increasingly less frequent in recent years. Precipitation is spread evenly throughout the year. The driest month is December, while the wettest months are April/May and October/November. Demographics Rezzato had a population of 13,576 inhabitants as of 31 December 2017. Since the end of World War II, like others places in Lombardy, Rezzato has been host to two waves of mass migration: the first, workers from within Italy; the second, immigrants from outside the peninsula. These two migrations have corresponded with two different economic phases. The first migration coincided with the economic miracle of the 1950s and 1960s, a period of extraordinary growth based on classic industry and public works. The second immigration has taken place against the background of a vastly different economy, centred around services, small industry and post-industrial scenarios. The first migration concerned Italians, from the countryside, the mountains and the cities and towns of the South, the East or the other provinces of Lombardy. Municipal government Rezzato is headed by a mayor () assisted by a legislative body, the , and an executive body, the . Since 1995, the mayor and members of the are directly elected together by resident