St. Joseph, MO Weather OverviewScoresFors & AgainstsWeatherPhotos Average Temperature Jan 32 °F0 °C Feb 28 °F-2 °C Mar 46 °F8 °C Apr 64 °F18 °C May 70 °F21 °C Jun 81 °F27 °C Jul 86 °F30 °C Aug 82 °F28 °C Sep 81 °F27 °C Oct 59 °F15 °C Nov 46 °F8 °C Dec 43 °F6 °C Humidity Jan 71% Feb 74% Mar 70% Apr 62% May 81% Jun 73% Jul 72% Aug 79% Sep 77% Oct 76% Nov 66% Dec 74% Rain Jan 20mm Feb 24mm Mar 36mm Apr 24mm May 113mm Jun 98mm Jul 25mm Aug 147mm Sep 50mm Oct 54mm Nov 11mm Dec 19mm Clouds Jan 54% Feb 63% Mar 53% Apr 41% May 65% Jun 35% Jul 19% Aug 44% Sep 31% Oct 40% Nov 31% Dec 43% Air quality US AQI Jan 33 Feb 35 Mar 36 Apr 35 May 33 Jun 31 Jul 37 Aug 35 Sep 35 Oct 25 Nov 31 Dec 34 Sun Jan 2UVI Feb 3UVI Mar 4UVI Apr 6UVI May 6UVI Jun 8UVI Jul 9UVI Aug 8UVI Sep 7UVI Oct 4UVI Nov 2UVI Dec 2UVI
