Brampton Weather OverviewScoresFors & AgainstsWeatherPhotos Average Temperature Jan 25 °F-4 °C Feb 27 °F-3 °C Mar 36 °F2 °C Apr 46 °F8 °C May 57 °F14 °C Jun 70 °F21 °C Jul 81 °F27 °C Aug 75 °F24 °C Sep 70 °F21 °C Oct 57 °F14 °C Nov 38 °F4 °C Dec 32 °F0 °C Humidity Jan 68% Feb 74% Mar 63% Apr 70% May 73% Jun 70% Jul 73% Aug 68% Sep 75% Oct 75% Nov 74% Dec 77% Rain Jan 45mm Feb 55mm Mar 35mm Apr 72mm May 82mm Jun 85mm Jul 107mm Aug 76mm Sep 37mm Oct 91mm Nov 56mm Dec 45mm Clouds Jan 60% Feb 76% Mar 46% Apr 64% May 60% Jun 46% Jul 27% Aug 23% Sep 43% Oct 53% Nov 71% Dec 61% Air quality US AQI Jan 29 Feb 29 Mar 22 Apr 22 May 26 Jun 26 Jul 28 Aug 27 Sep 25 Oct 23 Nov 23 Dec 33 Sun Jan 1UVI Feb 2UVI Mar 3UVI Apr 4UVI May 6UVI Jun 7UVI Jul 8UVI Aug 7UVI Sep 5UVI Oct 4UVI Nov 2UVI Dec 1UVI