Jacksonville, FL Weather OverviewScoresFors & AgainstsWeatherPhotos Average Temperature Jan 64 °F18 °C Feb 72 °F22 °C Mar 72 °F22 °C Apr 79 °F26 °C May 86 °F30 °C Jun 88 °F31 °C Jul 88 °F31 °C Aug 88 °F31 °C Sep 86 °F30 °C Oct 82 °F28 °C Nov 66 °F19 °C Dec 66 °F19 °C Humidity Jan 72% Feb 79% Mar 69% Apr 73% May 73% Jun 78% Jul 80% Aug 80% Sep 74% Oct 79% Nov 78% Dec 82% Rain Jan 100mm Feb 64mm Mar 64mm Apr 109mm May 40mm Jun 160mm Jul 219mm Aug 213mm Sep 48mm Oct 86mm Nov 53mm Dec 120mm Clouds Jan 37% Feb 56% Mar 36% Apr 35% May 24% Jun 41% Jul 42% Aug 43% Sep 31% Oct 43% Nov 47% Dec 47% Air quality US AQI Jan 39 Feb 35 Mar 37 Apr 31 May 30 Jun 38 Jul 40 Aug 30 Sep 33 Oct 30 Nov 36 Dec 32 Sun Jan 4UVI Feb 6UVI Mar 7UVI Apr 9UVI May 10UVI Jun 9UVI Jul 9UVI Aug 9UVI Sep 8UVI Oct 6UVI Nov 4UVI Dec 4UVI