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Yearly Normals for Black Diamond, WA

Month Temperatures (°F) Precipitation (in) Degree Days Min Max Avg Heating Cooling Jan 35 47 41 5.3 752 0 Feb 36 51 44 4.47 602 0 Mar 39 55 47 4.08 561 0 Apr 42 61 51 2.87 409 0 May 47 67 57 2.06 249 3 Jun 52 72 62 1.74 111 19 Jul 55 77 66 0.88 40 81 Aug 56 78 67 1.2 37 88 Sep 51 72 62 1.75 128 28 Oct 44 62 53 3.37 374 0 Nov 39 52 45 6.06 598 0 Dec 35 46 40 5.81 763 0 Year 44 62 53 39.59 4624 219 Data Controls Monthly | Yearly Related Maps Related Links Normal High Temperatures Normal Low Temperatures Normal Mean Temperatures Normal Precipitation - Forecast - Past Weather