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Chicago

The tables below display average monthly climate and weather indicators in Chicago Illinois.

Temperature by: Fahrenheit / Centigrade

Chicago Temperature Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Avg. Temperature 21.0 25.4 37.2 48.6 58.9 68.6 73.2 71.7 64.4 52.8 40.0 26.6 49.0
Avg. Max Temperature 29.0 33.5 45.8 58.6 70.1 79.6 83.7 81.8 74.8 63.3 48.4 34.0 58.6
Avg. Min Temperature 12.9 17.2 28.5 38.6 47.7 57.5 62.6 61.6 53.9 42.2 31.6 19.1 39.5
Days with Max Temp of 90 F or Higher 0.0 0.0 0.0 < 0.5 1.0 4.0 6.0 4.0 2.0 < 0.5 0.0 0.0 17.0
Days with Min Temp Below Freezing 29.0 25.0 21.0 8.0 1.0 0.0 0.0 0.0 < 0.5 5.0 17.0 26.0 131
  
Chicago Heating and Cooling Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Heating Degree Days 1364 1109 862 492 235 35.0 5.0 19.0 84.0 391 750 1190 6536
Cooling Degree Days 0.0 0.0 0.0 0.0 46.0 143 259 226 66.0 12.0 0.0 0.0 752
  
Chicago Precipitation Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Precipitation (inches) 1.5 1.4 2.7 3.6 3.3 3.8 3.7 4.2 3.8 2.4 2.9 2.5 35.8
Days with Precipitation 0.01 inch or More 11.0 9.0 12.0 13.0 11.0 10.0 10.0 9.0 9.0 9.0 11.0 11.0 125
Monthly Snowfall (inches) 10.7 8.2 6.6 1.6 0.1 < 0.05 < 0.05 < 0.05 < 0.05 0.4 1.9 8.1 37.6
  
Other Chicago Weather Indicators Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Average Wind Speed 11.7 11.4 11.9 11.9 10.5 9.3 8.4 8.2 8.9 10.1 11.2 11.0 10.4
Clear Days 7.0 6.0 5.0 6.0 7.0 7.0 8.0 9.0 9.0 9.0 5.0 6.0 84.0
Partly Cloudy Days 6.0 6.0 8.0 8.0 10.0 11.0 12.0 11.0 10.0 9.0 6.0 6.0 105
Cloudy Days 18.0 16.0 18.0 16.0 14.0 11.0 10.0 11.0 11.0 14.0 18.0 19.0 176
Percent of Possible Sunshine 44.0 49.0 51.0 50.0 58.0 67.0 66.0 62.0 59.0 55.0 38.0 43.0 54.0
Avg. Relative Humidity 59.0 73.5 73.0 69.5 66.5 66.5 69.0 71.5 71.5 70.0 69.0 73.0 75.0

Weather information for other cities in Illinois
• Cairo Weather
• Moline Weather
• Peoria Weather
• Rockford Weather
• Springfield Weather

 


 

Portions of this site are based on the CIA World Fact Book, a public-domain work
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