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Yearly Normals for Island Lake, WI

Month Temperatures (°F) Precipitation (in) Degree Days Min Max Avg Heating Cooling Jan -1 19 9 1.08 1740 0 Feb 6 26 16 0.77 1375 0 Mar 20 38 29 1.83 1126 0 Apr 33 54 44 2.61 647 1 May 45 67 56 3.12 307 36 Jun 54 76 65 4.31 86 89 Jul 59 80 70 3.88 29 167 Aug 56 78 67 4.64 52 120 Sep 47 68 58 4.17 242 19 Oct 36 56 46 2.5 582 0 Nov 23 38 30 2.05 1045 0 Dec 7 23 15 1.07 1554 0 Year 32 52 42 32.03 8785 432 Data Controls Monthly | Yearly Related Maps Related Links Normal High Temperatures Normal Low Temperatures Normal Mean Temperatures Normal Precipitation - Forecast - Past Weather