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The climate of Chicago is classified as hot-summer humid continental (Köppen: Dfa) with hot humid summers and cold, occasionally snowy winters. All four seasons are distinctly represented: Winters are cold and often see snow with below 0 Celsius temperatures and windchills, while summers are warm and humid with temperatures being hotter inland ...
Under Köppen, Chicago is classified as a humid continental climate (Dfa). Deep within continents, cities like Chicago are defined by huge temperature swings from cold, snowy winters to warm summers.
The Climate of Illinois describes the weather conditions, ... The snowiest winter on record for Chicago was 89.7 inches (2.28 m) during the winter of 1978–79. [19]
Chicago's present natural geography is a result of the large glaciers of the Ice Age, namely the Wisconsinan Glaciation that carved out the modern basin of Lake Michigan (which formed from the glacier's meltwater). The city of Chicago itself sits on the Chicago Plain, a flat plain that was once the bottom of ancestral Lake Chicago. This plain ...
• Arctic air funneled into Chicago shortly after the start of winter, causing the mercury to drop below zero and remain there for more than 24 hours. The high temperature on Dec. 23, 2023, was 1 ...
Temperatures at or above the century mark are a rarity in Chicago. Yet, 100 degrees was recorded on Thursday for the first time in more than a decade at O’Hare International Airport, the city ...
Climate data for Chicago (O'Hare Int'l Airport), 1991–2020 normals, [a] extremes 1871–present [b]Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year Record high °F (°C)
The lake also provides another positive effect: moderating Chicago's climate, making waterfront neighborhoods slightly warmer in winter and cooler in summer. [103] When Chicago was founded in 1837, most of the early building was around the mouth of the Chicago River, as can be seen on a map of the city's original 58 blocks. [104]