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 | -6.1 | -3.7 | 2.9 | 9.2 | 14.9 | 20.3 | 22.9 | 22.1 | 18.0 | 11.6 | 4.4 | -3.0 | 9.4 |
Avg. Max Temperature | -1.7 | 0.8 | 7.7 | 14.8 | 21.2 | 26.4 | 28.7 | 27.7 | 23.8 | 17.4 | 9.1 | 1.1 | 14.8 |
Avg. Min Temperature | -10.6 | -8.2 | -1.9 | 3.7 | 8.7 | 14.2 | 17.0 | 16.4 | 12.2 | 5.7 | -0.2 | -7.2 | 4.2 |
Days with Max Temp of 32 C 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 |
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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 |
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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 |
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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