Chicago (Chicago) is located in the Midwest,Illinois,the east lake Michigan.Is America's third largest city after New York and Los Angeles.Chicago is located in the centre of the north American continent,as America's most important railway,aviation hub.Chicago is also America's most important financial,cultural,manufacturing,one of futures and commodities trading center.Gradually become one of the metropolis in the world does not have significant influence.Chicago common aliases include:"second city",the "windy city","Chicago city",etc.Chicago is also the world's most important financial center,is the second largest central business district.Is America's largest futures market.Has been named the most balanced economies of development.In addition,the Chicago metropolitan area of new companies have been in the first place.
The geographical location
Chicago is located in the United States,the United States in the northeast of Illinois southwest coast of lake Michigan,one of the five great lakes.Traditionally divided into north,south and west,north and south 40.23 kilometers long and 24.14 km wide from east to west.According to the investigation agency data,Chicago,with a total area of 606.1 square kilometers,of which 588.3 square kilometers of land,an area of 17.8 square kilometers for the waters.Water area accounts for about 2.94% of the total area.
topography
Chicago is located in the northeast of Illinois,geographic coordinates to 41 degrees north latitude 53 points 0 seconds,39 minutes 0 seconds 87 degrees west longitude.Chicago is located in the Mississippi River system,and the great lakes water system on line.There are two rivers,the Chicago River through the city center,Carla matt River (Calumet River) through the industrial zone in southern cities.Two rivers into the lake,all of the 20th century,to make the Chicago river pollution of urban sewage is not continue to lake Michigan,Chicago river water by reverse flow direction,through the canal to nanhui into the Mississippi River system.
In the region near the terrain is flat,with an average altitude of 176 meters.Lakeshore is the lowest elevation 176 meters,the highest elevation of the southern suburbs of landfill,224 meters (41 degrees north latitude 39 points,18 seconds west longitude 87 degrees 34 minutes and 44 seconds).
climate
The Chicago climate all year round.The hottest July,the average highest temperature is 29 ° C,the average minimum temperature of 17 ° C; The coldest in January,and the average highest temperature was 2 ° C,the average minimum temperature of 11 ° C.History records the highest temperature of 40 ° C (July 24,1934),the minimum temperature for - 32 ° C (on January 20,1985).
Due to the effect of lake Michigan,Chicago winter windy.Chicago,temperature is appropriate,the average temperature in January is 6 ℃,April 9 ℃,July 22.8 ℃,11.4 ℃ in October.
Chicago rainwater enough,an average annual rainfall of 965 mm.For precipitation in most of the season,summer precipitation is often a thunderstorm or showers,rare continuous precipitation.Winter precipitation at least,is usually in the form of snow.Biggest daily rainfall for August 14,1987,recorded 164 mm.
"Windy city"
Passengers to Chicago,had better take some clothes,to adapt to the climate here.If just the mouth in the street meet with lake Michigan in January to the bitter cold wind,you can feel the weight of this nickname.The wind is not the only climate characteristics in Chicago,it also known temperature difference big,winter temperatures below minus 30 degrees Celsius,summer air temperature will be above 40 degrees Celsius,is a record.If you come to Chicago in special warm weather in winter,don't think Chicago warm in the winter,the weather here is changeable,often see electric report card on the road,showing time,the following display temperature,change once a minute,I'm afraid is also related to the vagaries of the weather.