Key West, FL Weather OverviewScoresFors & AgainstsWeatherPhotos Average Temperature Jan 75 °F24 °C Feb 79 °F26 °C Mar 79 °F26 °C Apr 82 °F28 °C May 84 °F29 °C Jun 86 °F30 °C Jul 88 °F31 °C Aug 90 °F32 °C Sep 88 °F31 °C Oct 86 °F30 °C Nov 81 °F27 °C Dec 77 °F25 °C Humidity Jan 67% Feb 72% Mar 66% Apr 69% May 68% Jun 70% Jul 66% Aug 71% Sep 76% Oct 78% Nov 77% Dec 82% Rain Jan 57mm Feb 18mm Mar 31mm Apr 73mm May 65mm Jun 58mm Jul 109mm Aug 106mm Sep 99mm Oct 82mm Nov 33mm Dec 94mm Clouds Jan 29% Feb 22% Mar 16% Apr 21% May 20% Jun 21% Jul 30% Aug 32% Sep 27% Oct 31% Nov 33% Dec 32% Sun Jan 6UVI Feb 8UVI Mar 10UVI Apr 11UVI May 11UVI Jun 11UVI Jul 10UVI Aug 10UVI Sep 9UVI Oct 8UVI Nov 6UVI Dec 5UVI
