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Yearly Normals for Napierville, PA

Month Temperatures (°F) Precipitation (in) Degree Days Min Max Avg Heating Cooling Jan 19 36 27 3.19 1169 0 Feb 21 39 30 2.56 984 0 Mar 29 49 39 3.31 806 0 Apr 38 61 49 3.72 474 0 May 48 71 59 4.61 208 26 Jun 57 79 68 4.04 39 121 Jul 61 83 72 4.57 5 227 Aug 59 81 70 3.48 13 166 Sep 52 73 63 4.08 106 33 Oct 40 63 51 3.32 427 5 Nov 31 51 41 3.62 712 0 Dec 24 40 32 3.19 1017 0 Year 40 60 50 43.69 5960 578 Data Controls Monthly | Yearly Related Maps Related Links Normal High Temperatures Normal Low Temperatures Normal Mean Temperatures Normal Precipitation - Forecast - Past Weather