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Yearly Normals for Marlboro, MD

Month Temperatures (°F) Precipitation (in) Degree Days Min Max Avg Heating Cooling Jan 24 42 33 3.43 1005 0 Feb 26 45 35 2.69 831 0 Mar 34 54 44 3.87 659 0 Apr 42 65 53 3.33 353 1 May 52 74 63 4.54 119 55 Jun 61 83 72 3.59 9 220 Jul 67 87 77 4.09 0 368 Aug 65 86 75 3.69 0 319 Sep 58 79 68 4.35 29 129 Oct 45 68 56 3.56 294 17 Nov 36 57 47 3.32 550 0 Dec 29 46 37 3.3 858 0 Year 45 65 55 43.76 4707 1109 Data Controls Monthly | Yearly Related Maps Related Links Normal High Temperatures Normal Low Temperatures Normal Mean Temperatures Normal Precipitation - Forecast - Past Weather