Guanajuato Weather OverviewScoresFors & AgainstsWeatherPhotos Average Temperature Jan 66 °F19 °C Feb 72 °F22 °C Mar 77 °F25 °C Apr 77 °F25 °C May 81 °F27 °C Jun 77 °F25 °C Jul 72 °F22 °C Aug 73 °F23 °C Sep 73 °F23 °C Oct 72 °F22 °C Nov 70 °F21 °C Dec 68 °F20 °C Humidity Jan 56% Feb 44% Mar 44% Apr 29% May 29% Jun 68% Jul 77% Aug 73% Sep 77% Oct 79% Nov 71% Dec 54% Rain Jan 11mm Feb 8mm Mar 13mm Apr 4mm May 39mm Jun 171mm Jul 121mm Aug 142mm Sep 83mm Oct 115mm Nov 38mm Dec 12mm Clouds Jan 29% Feb 15% Mar 10% Apr 17% May 20% Jun 67% Jul 58% Aug 49% Sep 59% Oct 61% Nov 52% Dec 17% Air quality US AQI Jan 45 Feb 51 Mar 58 Apr 59 May 61 Jun 40 Jul 40 Aug 33 Sep 36 Oct 27 Nov 36 Dec 48 Sun Jan 8UVI Feb 11UVI Mar 13UVI Apr 14UVI May 14UVI Jun 10UVI Jul 9UVI Aug 10UVI Sep 10UVI Oct 8UVI Nov 8UVI Dec 7UVI