Chicago's Climate

For those of you that may or may not be into weather/climate and just want to check out some climate facts about the city of Chicago in general or maybe for a future visit...here are some facts about Chicago's climate.

Climate for Chicago, Illinois
Home : Climate Graphs: Illinois : Chicago
Average Temperatures for Chicago
Average Temperature for Chicago, Illinois

Month Low High
Jan 14.3°F 29.6°F
Feb 19.2°F 34.7°F
Mar 28.5°F 46.1°F
Apr 37.6°F 58.0°F
May 47.5°F 69.9°F
Jun 57.2°F 79.2°F
Jul 63.2°F 83.5°F
Aug 62.2°F 81.2°F
Sept 53.7°F 73.9°F
Oct 42.1°F 62.1°F
Nov 31.6°F 47.1°F
Dec 20.4°F 34.4°F

Chicago's coldest month is January when the average temperature overnight is 14.3°F. In July, the warmest month, the average day time temperature rises to 83.5°F.
Average Rainfall for Chicago
Average Rainfall for Chicago, Illinois

Month Precipitation
Jan 1.75in.
Feb 1.63in.
Mar 2.65in.
Apr 3.68in.
May 3.38in.
Jun 3.63in.
Jul 3.51in.
Aug 4.62in.
Sept 3.27in.
Oct 2.71in.
Nov 3.01in.
Dec 2.43in.

The driest month in Chicago is February with 1.63 inches of precipitation, and with 4.62 inches August is the wettest month.
Monthly Sunshine Hours
Percentage of Sunshine for Chicago, Illinois

Month Sunshine Hours
Jan 44%
Feb 49%
Mar 51%
Apr 50%
May 58%
Jun 67%
Jul 66%
Aug 62%
Sept 59%
Oct 55%
Nov 38%
Dec 43%

Sunshine hours refers to the amount sunshine there is during the hours of daylight. A higher percentage means there is more sunshine through the day and a lower percentage will indicate that it is probably cloudier. Sunshine hours are important when you are planning your vacation.