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Yearly Normals for Winthrop, WA

Month Temperatures (°F) Precipitation (in) Degree Days Min Max Avg Heating Cooling Jan 15 29 22 3.73 1344 0 Feb 19 36 28 2.69 1050 0 Mar 25 46 36 1.68 909 0 Apr 31 58 44 1.03 618 0 May 39 67 53 1.05 375 2 Jun 46 74 60 1.06 189 36 Jul 51 82 66 0.84 78 120 Aug 51 82 67 0.79 66 115 Sep 43 73 58 0.83 263 38 Oct 33 57 45 1.48 636 0 Nov 25 38 31 3.47 1013 0 Dec 15 27 21 4.07 1355 0 Year 33 56 44 22.72 7896 311 Data Controls Monthly | Yearly Related Maps Related Links Normal High Temperatures Normal Low Temperatures Normal Mean Temperatures Normal Precipitation - Forecast - Past Weather