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Yearly Normals for Martinsville, IL

Month Temperatures (°F) Precipitation (in) Degree Days Min Max Avg Heating Cooling Jan 19 35 27 2.2 1182 0 Feb 24 41 32 2.4 918 0 Mar 33 53 43 3.35 690 0 Apr 43 65 54 3.98 345 7 May 52 76 64 4.23 134 100 Jun 61 85 73 3.94 8 241 Jul 65 88 76 4.65 0 354 Aug 63 86 75 3.46 7 300 Sep 56 79 68 3.17 57 135 Oct 45 68 56 3.25 294 22 Nov 34 53 44 3.87 646 0 Dec 24 40 32 3.23 1029 0 Year 43 64 54 41.73 5310 1159 Data Controls Monthly | Yearly Related Maps Related Links Normal High Temperatures Normal Low Temperatures Normal Mean Temperatures Normal Precipitation - Forecast - Past Weather