Chicago, IL Weather OverviewScoresFors & AgainstsWeatherPhotos Average Temperature Jan 28 °F-2 °C Feb 29 °F-2 °C Mar 39 °F4 °C Apr 52 °F11 °C May 61 °F16 °C Jun 68 °F20 °C Jul 81 °F27 °C Aug 77 °F25 °C Sep 74 °F24 °C Oct 55 °F13 °C Nov 39 °F4 °C Dec 39 °F4 °C Humidity Jan 65% Feb 63% Mar 57% Apr 58% May 67% Jun 64% Jul 65% Aug 60% Sep 67% Oct 65% Nov 66% Dec 66% Rain Jan 39mm Feb 49mm Mar 48mm Apr 60mm May 166mm Jun 96mm Jul 109mm Aug 67mm Sep 153mm Oct 84mm Nov 37mm Dec 29mm Clouds Jan 71% Feb 82% Mar 56% Apr 52% May 67% Jun 51% Jul 23% Aug 24% Sep 48% Oct 51% Nov 67% Dec 58% Air quality US AQI Jan 41 Feb 39 Mar 35 Apr 33 May 35 Jun 39 Jul 39 Aug 45 Sep 44 Oct 27 Nov 40 Dec 44 Sun Jan 2UVI Feb 3UVI Mar 3UVI Apr 5UVI May 6UVI Jun 8UVI Jul 9UVI Aug 7UVI Sep 6UVI Oct 4UVI Nov 2UVI Dec 1UVI
