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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 ...
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]
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]
This is a list of cities by average temperature (monthly and yearly). The temperatures listed are averages of the daily highs and lows. Thus, the actual daytime temperature in a given month may be considerably higher than the temperature listed here, depending on how large the difference between daily highs and lows is.
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 ...
Climate data for Chicago (O'Hare Int'l Airport), 1991–2020 normals, extremes 1871–present; Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year
Köppen climate types of Illinois, using 1991-2020 climate normals. Illinois has a continental climate, with large temperature extremes not moderated by either mountains or oceans. Weather is influenced primarily by cold Canadian Arctic air in the winter, and warm, humid air from the Gulf of Mexico in the summer. High temperatures in the south ...
Higher temperatures will yield more heat waves like the 1995 Chicago heat wave. [8] According to the National Weather Service, heat is a leading contributor to weather-related deaths. [9] Increases in temperature are especially dangerous in cities like Chicago, which experience the urban heat island effect. Future heat waves will yield similar ...