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Yearly Normals for Glendo, SD

Month Temperatures (°F) Precipitation (in) Degree Days Min Max Avg Heating Cooling Jan 4 27 16 0.42 1529 0 Feb 11 34 22 0.44 1196 0 Mar 19 44 31 0.73 1042 0 Apr 30 57 44 1.69 645 0 May 41 69 55 2.84 332 14 Jun 49 78 64 2.98 121 81 Jul 54 85 70 2.12 38 190 Aug 53 86 69 1.38 59 183 Sep 41 74 58 1.23 251 34 Oct 31 60 45 1.37 608 0 Nov 17 41 29 0.58 1072 0 Dec 7 31 19 0.4 1427 0 Year 30 57 43 16.18 8320 502 Data Controls Monthly | Yearly Related Maps Related Links Normal High Temperatures Normal Low Temperatures Normal Mean Temperatures Normal Precipitation - Forecast - Past Weather