Dallas, TX Weather OverviewScoresFors & AgainstsWeatherPhotos Average Temperature Jan 54 °F 12 °C Feb 57 °F 14 °C Mar 64 °F 18 °C Apr 75 °F 24 °C May 81 °F 27 °C Jun 88 °F 31 °C Jul 91 °F 33 °C Aug 95 °F 35 °C Sep 91 °F 33 °C Oct 75 °F 24 °C Nov 61 °F 16 °C Dec 61 °F 16 °C Humidity Jan 67% Feb 72% Mar 61% Apr 68% May 77% Jun 75% Jul 65% Aug 63% Sep 62% Oct 62% Nov 66% Dec 69% Rain Jan 31mm Feb 19mm Mar 27mm Apr 80mm May 133mm Jun 141mm Jul 22mm Aug 26mm Sep 18mm Oct 132mm Nov 46mm Dec 41mm Clouds Jan 36% Feb 71% Mar 46% Apr 39% May 49% Jun 37% Jul 19% Aug 15% Sep 12% Oct 26% Nov 29% Dec 24% Air quality US AQI Jan 26 Feb 29 Mar 34 Apr 29 May 21 Jun 28 Jul 42 Aug 32 Sep 27 Oct 25 Nov 26 Dec 25 Sun Jan 3UVI Feb 4UVI Mar 7UVI Apr 7UVI May 8UVI Jun 9UVI Jul 10UVI Aug 9UVI Sep 9UVI Oct 6UVI Nov 4UVI Dec 3UVI