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Yearly Normals for Portage, WI

Month Temperatures (°F) Precipitation (in) Degree Days Min Max Avg Heating Cooling Jan 4 25 14 0.99 1574 0 Feb 9 31 20 1.01 1260 0 Mar 21 42 31 2.09 1043 0 Apr 32 56 44 3.5 621 0 May 44 70 57 3.5 290 28 Jun 53 78 66 4.2 74 97 Jul 58 82 70 4.1 17 173 Aug 56 79 68 4.57 50 135 Sep 47 71 59 3.47 201 20 Oct 35 59 47 2.3 551 2 Nov 23 43 33 2.11 959 0 Dec 11 29 20 1.26 1397 0 Year 33 55 44 33.1 8037 455 Data Controls Monthly | Yearly Related Maps Related Links Normal High Temperatures Normal Low Temperatures Normal Mean Temperatures Normal Precipitation - Forecast - Past Weather