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Yearly Normals for Lewis, CO

Month Temperatures (°F) Precipitation (in) Degree Days Min Max Avg Heating Cooling Jan 15 38 27 1.2 1187 0 Feb 19 43 31 1.3 948 0 Mar 25 50 38 1.37 848 0 Apr 31 60 45 0.92 591 0 May 39 69 54 1.32 337 7 Jun 48 82 65 0.59 89 81 Jul 54 87 71 1.53 7 175 Aug 53 85 69 1.65 21 135 Sep 46 76 61 1.54 156 40 Oct 36 64 50 1.95 469 2 Nov 25 48 37 1.53 848 0 Dec 18 40 29 1.04 1122 0 Year 34 62 48 15.94 6623 440 Data Controls Monthly | Yearly Related Maps Related Links Normal High Temperatures Normal Low Temperatures Normal Mean Temperatures Normal Precipitation - Forecast - Past Weather