Urban climate refers to climatic

Climate

Climate encompasses the statistics of temperature, humidity, atmospheric pressure, wind, rainfall, atmospheric particle count and other meteorological elemental measurements in a given region over long periods...

 conditions in an urban area

Urban area

An urban area is characterized by higher population density and vast human features in comparison to areas surrounding it. Urban areas may be cities, towns or conurbations, but the term is not commonly extended to rural settlements such as villages and hamlets.Urban areas are created and further...

 that differ from neighboring rural

Rural

Rural areas or the country or countryside are areas that are not urbanized, though when large areas are described, country towns and smaller cities will be included. They have a low population density, and typically much of the land is devoted to agriculture...

 areas and are attributable t urban development. Urbanization

Urbanization

Urbanization, urbanisation or urban drift is the physical growth of urban areas as a result of global change. The United Nations projected that half of the world's population would live in urban areas at the end of 2008....

 tremendously changes the form of the landscape and also produces changes in an area's air.

Rainfall

Cities absorb much less water per square metre than rural areas, as much of them is paved or built on. In some areas this creates a need for specific measures to reduce the risk of localised flood

Flood

A flood is an overflow of an expanse of water that submerges land. The EU Floods directive defines a flood as a temporary covering by water of land not normally covered by water...

ing during periods of heavy rainfall. Measures include the use of rainwater storage and drainage

Drainage

Drainage is the natural or artificial removal of surface and sub-surface water from an area. Many agricultural soils need drainage to improve production or to manage water supplies.-Early history:...

 systems. In some areas this may involve storm sewers to collect rainwater separately from household blackwater

Blackwater (waste)

Blackwater is a term dating to at least the 1970s used to describe wastewater containing fecal matter and urine. It is also known as brown water, foul water, or sewage...

, to reduce the risk of polluted water overflowing during periods of rainfall heavy enough to overwhelm sewers.

Vegetation

According to one study, the growing season in east coast U.S. cities is fifteen days longer than in the surrounding rural areas. This is attributed to the higher temperature. http://www.livescience.com/environment/041026_Urban_Heat_Island.html