Zwolle Weather OverviewScoresFors & AgainstsWeatherPhotos Average Temperature Jan 40 °F5 °C Feb 47 °F9 °C Mar 52 °F11 °C Apr 56 °F13 °C May 64 °F18 °C Jun 71 °F22 °C Jul 70 °F21 °C Aug 72 °F22 °C Sep 63 °F17 °C Oct 57 °F14 °C Nov 48 °F9 °C Dec 44 °F7 °C Humidity Jan 80% Feb 79% Mar 77% Apr 69% May 71% Jun 71% Jul 75% Aug 74% Sep 80% Oct 84% Nov 85% Dec 84% Rain Jan 30mm Feb 35mm Mar 46mm Apr 22mm May 35mm Jun 141mm Jul 55mm Aug 40mm Sep 67mm Oct 46mm Nov 45mm Dec 44mm Clouds Jan 84% Feb 62% Mar 79% Apr 46% May 58% Jun 54% Jul 62% Aug 44% Sep 69% Oct 82% Nov 90% Dec 75% Air quality US AQI Jan 13 Feb 19 Mar 15 Apr 15 May 13 Jun 15 Jul 13 Aug 13 Sep 11 Oct 12 Nov 14 Dec 11 Sun Jan 1UVI Feb 1UVI Mar 2UVI Apr 2UVI May 4UVI Jun 3UVI Jul 5UVI Aug 5UVI Sep 2UVI Oct 2UVI Nov 1UVI Dec 0UVI
