Stanley Weather OverviewScoresFors & AgainstsWeatherPhotos Average Temperature Jan 54 °F12 °C Feb 51 °F11 °C Mar 52 °F11 °C Apr 46 °F8 °C May 45 °F7 °C Jun 43 °F6 °C Jul 41 °F5 °C Aug 41 °F5 °C Sep 42 °F6 °C Oct 46 °F8 °C Nov 50 °F10 °C Dec 50 °F10 °C Humidity Jan 59% Feb 60% Mar 62% Apr 63% May 62% Jun 65% Jul 65% Aug 63% Sep 62% Oct 61% Nov 60% Dec 62% Rain Jan 36mm Feb 33mm Mar 16mm Apr 31mm May 26mm Jun 133mm Jul 20mm Aug 35mm Sep 23mm Oct 26mm Nov 43mm Dec 23mm Clouds Jan 59% Feb 77% Mar 65% Apr 80% May 72% Jun 68% Jul 78% Aug 81% Sep 80% Oct 76% Nov 64% Dec 74% Sun Jan 6UVI Feb 5UVI Mar 4UVI Apr 2UVI May 1UVI Jun 0UVI Jul 1UVI Aug 1UVI Sep 3UVI Oct 3UVI Nov 5UVI Dec 5UVI