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Yearly Normals for Walnut, IL

Month Temperatures (°F) Precipitation (in) Degree Days Min Max Avg Heating Cooling Jan 10 29 19 1.52 1417 0 Feb 15 34 25 1.51 1126 0 Mar 27 47 37 2.79 877 0 Apr 37 60 49 3.72 493 2 May 49 72 60 4.41 205 60 Jun 58 82 70 4.58 23 162 Jul 62 85 73 3.7 4 264 Aug 59 83 71 4.69 25 215 Sep 51 76 63 2.87 113 57 Oct 39 64 52 2.82 424 5 Nov 28 47 38 2.9 814 0 Dec 16 34 25 2.14 1238 0 Year 38 59 48 37.65 6759 765 Data Controls Monthly | Yearly Related Maps Related Links Normal High Temperatures Normal Low Temperatures Normal Mean Temperatures Normal Precipitation - Forecast - Past Weather