Nanjing Weather OverviewScoresFors & AgainstsWeatherPhotos Average Temperature Jan 45 °F7 °C Feb 44 °F7 °C Mar 61 °F16 °C Apr 69 °F21 °C May 79 °F26 °C Jun 84 °F29 °C Jul 88 °F31 °C Aug 88 °F31 °C Sep 82 °F28 °C Oct 73 °F23 °C Nov 66 °F19 °C Dec 50 °F10 °C Humidity Jan 69% Feb 76% Mar 63% Apr 67% May 53% Jun 67% Jul 85% Aug 81% Sep 73% Oct 65% Nov 61% Dec 67% Rain Jan 28mm Feb 43mm Mar 15mm Apr 30mm May 33mm Jun 38mm Jul 46mm Aug 76mm Sep 13mm Oct 3mm Nov 14mm Dec 27mm Clouds Jan 42% Feb 83% Mar 67% Apr 70% May 62% Jun 78% Jul 71% Aug 38% Sep 31% Oct 64% Nov 50% Dec 66% Air quality US AQI Jan 155 Feb 144 Mar 139 Apr 124 May 110 Jun 108 Jul 87 Aug 80 Sep 91 Oct 101 Nov 118 Dec 145 Sun Jan 4UVI Feb 4UVI Mar 5UVI Apr 5UVI May 7UVI Jun 6UVI Jul 6UVI Aug 8UVI Sep 8UVI Oct 5UVI Nov 4UVI Dec 3UVI