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Yearly Normals for Diona, IL

Month Temperatures (°F) Precipitation (in) Degree Days Min Max Avg Heating Cooling Jan 17 33 25 2.03 1245 0 Feb 21 39 30 2.08 985 0 Mar 32 50 41 3.06 745 0 Apr 42 62 52 3.84 385 5 May 53 73 63 3.95 156 103 Jun 63 83 73 4.21 12 244 Jul 66 86 76 4.16 0 345 Aug 64 84 74 3.25 9 295 Sep 56 78 67 3.06 61 123 Oct 45 66 55 3.02 318 19 Nov 33 51 42 3.71 694 0 Dec 23 38 30 2.84 1077 0 Year 43 62 52 39.21 5687 1134 Data Controls Monthly | Yearly Related Maps Related Links Normal High Temperatures Normal Low Temperatures Normal Mean Temperatures Normal Precipitation - Forecast - Past Weather