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Yearly Normals for Marissa, IL

Month Temperatures (°F) Precipitation (in) Degree Days Min Max Avg Heating Cooling Jan 22 40 31 2.02 1059 0 Feb 27 46 36 2.2 801 0 Mar 36 57 46 3.54 579 0 Apr 45 68 56 3.91 277 16 May 54 77 66 4.18 104 121 Jun 63 86 74 3.97 6 280 Jul 67 90 78 3.51 0 404 Aug 64 88 76 3.34 5 338 Sep 56 82 69 2.98 39 151 Oct 45 71 58 2.87 246 29 Nov 36 56 46 3.88 568 0 Dec 27 44 35 2.97 928 0 Year 45 67 56 39.37 4612 1339 Data Controls Monthly | Yearly Related Maps Related Links Normal High Temperatures Normal Low Temperatures Normal Mean Temperatures Normal Precipitation - Forecast - Past Weather