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Yearly Normals for Dewees Island, SC

Month Temperatures (°F) Precipitation (in) Degree Days Min Max Avg Heating Cooling Jan 34 59 47 4.63 585 0 Feb 36 62 49 3.29 451 0 Mar 43 69 56 4.16 295 14 Apr 49 77 63 3.02 115 45 May 58 84 71 3.91 14 192 Jun 65 90 77 5.6 0 371 Jul 69 93 81 5.63 0 497 Aug 68 91 80 6.43 0 452 Sep 63 86 75 5.24 2 286 Oct 52 77 65 3.1 111 95 Nov 43 69 56 2.52 278 20 Dec 37 61 49 3.48 509 6 Year 51 76 64 51.01 2360 1978 Data Controls Monthly | Yearly Related Maps Related Links Normal High Temperatures Normal Low Temperatures Normal Mean Temperatures Normal Precipitation - Forecast - Past Weather