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Yearly Normals for Richland, WA

Month Temperatures (°F) Precipitation (in) Degree Days Min Max Avg Heating Cooling Jan 26 40 33 0.97 993 0 Feb 29 47 38 0.75 749 0 Mar 35 57 46 0.71 590 0 Apr 40 65 53 0.57 369 1 May 47 73 60 0.61 172 27 Jun 54 80 67 0.41 54 113 Jul 59 88 73 0.25 8 261 Aug 58 88 73 0.3 8 251 Sep 50 79 64 0.34 112 86 Oct 40 65 53 0.53 386 0 Nov 33 49 41 1.07 715 0 Dec 27 40 34 1.04 977 0 Year 41 64 53 7.55 5133 739 Data Controls Monthly | Yearly Related Maps Related Links Normal High Temperatures Normal Low Temperatures Normal Mean Temperatures Normal Precipitation - Forecast - Past Weather