Bellingham, WA Weather OverviewScoresFors & AgainstsWeatherPhotos Average Temperature Jan 46 °F8 °C Feb 39 °F4 °C Mar 52 °F11 °C Apr 55 °F13 °C May 64 °F18 °C Jun 66 °F19 °C Jul 70 °F21 °C Aug 72 °F22 °C Sep 66 °F19 °C Oct 54 °F12 °C Nov 50 °F10 °C Dec 45 °F7 °C Humidity Jan 78% Feb 64% Mar 66% Apr 75% May 72% Jun 72% Jul 74% Aug 75% Sep 81% Oct 76% Nov 76% Dec 82% Rain Jan 56mm Feb 36mm Mar 26mm Apr 44mm May 20mm Jun 21mm Jul 21mm Aug 12mm Sep 65mm Oct 62mm Nov 43mm Dec 45mm Clouds Jan 67% Feb 59% Mar 30% Apr 58% May 33% Jun 38% Jul 36% Aug 37% Sep 48% Oct 51% Nov 62% Dec 78% Air quality US AQI Jan 14 Feb 19 Mar 18 Apr 15 May 19 Jun 14 Jul 14 Aug 21 Sep 13 Oct 22 Nov 29 Dec 19 Sun Jan 1UVI Feb 1UVI Mar 3UVI Apr 4UVI May 5UVI Jun 6UVI Jul 6UVI Aug 6UVI Sep 4UVI Oct 2UVI Nov 1UVI Dec 1UVI
