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December Normals for Winchester, WA

< November January > Day Temperatures (°F) Precipitation (in) Degree Days Min Max Avg Heating Cooling 1 25 38 32 0.05 33 0 2 25 38 31 0.05 34 0 3 25 37 31 0.05 34 0 4 24 37 31 0.05 34 0 5 24 37 30 0.05 35 0 6 24 36 30 0.05 35 0 7 23 36 30 0.05 35 0 8 23 36 30 0.05 36 0 9 23 36 29 0.04 36 0 10 23 35 29 0.04 36 0 11 22 35 29 0.04 36 0 12 22 35 29 0.04 36 0 13 22 35 28 0.04 37 0 14 22 34 28 0.04 37 0 15 22 34 28 0.04 37 0 16 21 34 28 0.04 37 0 17 21 34 28 0.04 37 0 18 21 34 27 0.04 38 0 19 21 33 27 0.04 38 0 20 21 33 27 0.04 38 0 21 21 33 27 0.04 38 0 22 21 33 27 0.04 38 0 23 20 33 27 0.04 38 0 24 20 33 27 0.04 38 0 25 20 33 27 0.04 38 0 26 20 33 27 0.04 38 0 27 20 33 26 0.04 39 0 28 20 33 26 0.04 39 0 29 20 33 26 0.04 39 0 30 20 33 26 0.04 39 0 31 20 33 26 0.04 39 0 Month 22 35 28 1.32 1142 0 Data Controls Monthly: January February March April May June July August September October November December   | Yearly Related Maps Related Links Normal High Temperatures Normal Low Temperatures Normal Mean Temperatures Normal Precipitation - Forecast - Past Weather