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Chicago Weather Information

Average Temperatures

Chicago Monthly Weather Month Normal High Normal Low Avg. Temp. Precipitation (Avg. Inches) Snowfall (Avg. Inches) January 29.0 12.9 21.3 1.67 10.4 February 33.5 17.2 25.7 1.36 8.2 March 45.8 28.5 36.6 2.61 6.5 April 58.6 38.6 48.5 3.58 1.6 May 70.1 47.7 59.1 3.29 .1 June 79.6 57.5 68.4 3.78 - July 83.7 62.6 73.1 3.61 - August 81.8 61.6 71.9 4.03 - September 74.8 53.9 64.3 3.48 - October 63.3 42.2 52.6 2.59 .4 November 48.4 31.6 39.5 2.86 1.9 December 34.0 19.1 27.1 2.17 8.3   SOURCE: National Climatic Data Center