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Official monthly mean temperatures have ranged from 10.1 °F (−12.2 °C) in January 1977 to 81.3 °F (27.4 °C) in July 1955, both recorded at Midway, [16] while the annual mean temperature has ranged from 45.1 °F (7.3 °C) in 1875, as recorded at the Roanoke Building, to 54.5 °F (12.5 °C), as recorded at O'Hare. [16]
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.
Climate data for Chicago (Midway International Airport), 1991–2020 normals, extremes 1928–present Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year Record high °F (°C)
June 25, 1988: “Chicago’s official high temperature was a record (for June 25) 103 degrees at O’Hare International Airport at 3 p.m., and it was 2 degrees higher at Lake Michigan. By ...
The lowest temperature of −27 °F (−33 °C) was recorded on January 20, 1985. Along with long, hot dry spells in the summer, Chicago can suffer extreme winter cold spells. In the entire month of January 1977, the temperature did not rise above 31 °F (−0.6 °C). The average temperature that month was around 10 °F (−12 °C).
The average temperatures for the month of February are a maximum of 36.5 degrees with a minimum of 21.4 degrees minimum, according to NWS. The average monthly temperature for the month ...
The period from November 2022 to the end of October 2023 was the hottest 12 months, with an average temperature of 1.32 degrees Celsius above pre-industrial levels, according to an analysis of ...
Average yearly precipitation for Illinois varies from 48 inches or 1,220 mm at the southern tip to 35 inches or 890 mm in the northern portion of the state. Normal annual snowfall exceeds 38 inches or 0.97 m in Chicago, while the southern portion of the state normally receives less than 14 inches or 0.36 m. [1]