Fort Myers, FL Weather OverviewScoresFors & AgainstsWeatherPhotos Average Temperature Jan 70 °F21 °C Feb 77 °F25 °C Mar 77 °F25 °C Apr 79 °F26 °C May 84 °F29 °C Jun 86 °F30 °C Jul 88 °F31 °C Aug 86 °F30 °C Sep 88 °F31 °C Oct 86 °F30 °C Nov 77 °F25 °C Dec 77 °F25 °C Humidity Jan 79% Feb 85% Mar 83% Apr 80% May 83% Jun 88% Jul 90% Aug 93% Sep 83% Oct 86% Nov 84% Dec 89% Rain Jan 53mm Feb 58mm Mar 14mm Apr 71mm May 93mm Jun 200mm Jul 323mm Aug 295mm Sep 76mm Oct 88mm Nov 30mm Dec 127mm Clouds Jan 17% Feb 27% Mar 20% Apr 16% May 17% Jun 35% Jul 40% Aug 48% Sep 23% Oct 31% Nov 24% Dec 39% Air quality US AQI Jan 29 Feb 32 Mar 31 Apr 35 May 36 Jun 29 Jul 30 Aug 27 Sep 29 Oct 30 Nov 27 Dec 29 Sun Jan 6UVI Feb 8UVI Mar 9UVI Apr 10UVI May 11UVI Jun 10UVI Jul 10UVI Aug 9UVI Sep 9UVI Oct 7UVI Nov 6UVI Dec 4UVI