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Yearly Normals for Westport, SD

Month Temperatures (°F) Precipitation (in) Degree Days Min Max Avg Heating Cooling Jan 2 21 11 0.53 1661 0 Feb 9 28 19 0.53 1296 0 Mar 20 40 30 1.37 1089 0 Apr 32 57 45 1.95 613 2 May 44 71 57 2.73 266 26 Jun 53 79 66 3.16 78 111 Jul 58 85 72 2.71 24 227 Aug 56 84 70 2.11 38 195 Sep 46 74 60 1.7 199 38 Oct 34 59 47 1.45 567 0 Nov 19 38 29 0.88 1084 0 Dec 7 25 16 0.39 1518 0 Year 32 55 43 19.51 8433 599 Data Controls Monthly | Yearly Related Maps Related Links Normal High Temperatures Normal Low Temperatures Normal Mean Temperatures Normal Precipitation - Forecast - Past Weather