Chicago, Illinois

Chicago, Illinois

Geography

Chicago is located in northeastern Illinois at the southwestern tip of Lake Michigan. When Chicago was founded in the 1830s most of the early building began around the mouth of the Chicago River. According to the U.S. Census Bureau, Chicago has a total area of 606.1 km² (234.0 mi²), of which 588.3 km² (227.1 mi²) is land and 17.8 km² (6.9 mi²) is water. The total area is 2.94% water. The city has been built on relatively flat land; the average height of land is 579 feet (176 meters) above sea level. The city lies beside Lake Michigan and two rivers, the Chicago in downtown and the Calumet in the industrial far South Side, entirely or partially flow through Chicago. The Chicago Sanitary and Ship Canal connects the Chicago River with the Des Plaines River, which runs to the west of the city.

Related Topics:
Illinois - Lake Michigan - Chicago River - U.S. Census Bureau - Km² - Mi² - Calumet - Chicago Sanitary and Ship Canal - Des Plaines River

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Climate

Chicago has a temperate climate, typical of the U.S. Midwest, with hot summers and frigid winters, subject to extremes in both seasons (though Lake Michigan has a moderating effect close to shore). Weather typical of each season can arrive unusually early or late. For example, it has snowed in September (1942) and reached 90 °F (33 °C) in March (1982). The greatest recorded single-day temperature difference was more than 65 °F (31 °C) on (February 8, 1900).

Related Topics:
September - 1942 - March - 1982 - February 8 - 1900

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In a typical Chicago summer, average high temperatures are 72 °F to 84 °F (23 °C to 28 °C), with overnight lows averaging 62 °F (17 °C). Yearly precipitation averages about 33 inches (838 mm). Summer is the rainiest season, with short-lived rainfall and thunderstorms more common than prolonged rainy periods. On average, temperatures exceed 90 °F (33 °C) on 14 days each summer. The highest temperature reached in Chicago is an unofficial 109 °F (44 °C) on July 24, 1935.

Related Topics:
Summer - Season - Rain - Thunderstorms - July 24 - 1935

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Winter in Chicago is a variable and fickle season. On average Chicago receives a total of 37.0 inches (95 cm) of snow, though total snowfall has ranged from 9.8 to 87.0 inches (25 and 223 cm). Typical snowfall accumulation is around 2 inches (5 cm), but about once a year Chicago experiences 10 to 14 inches (26 to 36 cm) of snow in one day. Temperatures can vary widely in the span of one week, and extended periods of temperatures below 32 °F (0 °C) are not uncommon in January and February. The temperature in January averages about 25 °F (-4 °C) in the afternoon and 10 °F (-12 °C) at night. Temperatures drop below 0 °F (-18 °C) an average of 15 days each winter. Although rare, the temperature can climb to 50 °F (10 °C) or higher in winter.

Related Topics:
Winter - Snow - January - February

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Related topics

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• Chicagoland
• Maps of Chicago
• Chicago neighborhoods
• Community areas of Chicago

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