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Yearly Normals for Apostle Islands National Lak, WI

Month Temperatures (°F) Precipitation (in) Degree Days Min Max Avg Heating Cooling Jan 3 21 12 1.78 1641 0 Feb 7 27 17 0.97 1347 0 Mar 18 37 27 2.2 1177 0 Apr 30 50 40 2.25 759 0 May 40 64 52 3.18 416 4 Jun 49 72 61 3.84 156 19 Jul 56 77 66 4.06 61 102 Aug 55 75 65 3.99 76 80 Sep 46 66 56 3.78 272 6 Oct 36 55 45 2.82 611 0 Nov 24 38 31 2.86 1020 0 Dec 11 26 18 1.73 1451 0 Year 31 51 41 33.46 8987 211 Data Controls Monthly | Yearly Related Maps Related Links Normal High Temperatures Normal Low Temperatures Normal Mean Temperatures Normal Precipitation - Forecast - Past Weather