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December Normals for Sunnyside, WA

< November January > Day Temperatures (°F) Precipitation (in) Degree Days Min Max Avg Heating Cooling 1 26 40 33 0.04 32 0 2 25 39 32 0.04 33 0 3 25 39 32 0.04 33 0 4 25 39 32 0.04 33 0 5 25 38 31 0.04 34 0 6 24 38 31 0.04 34 0 7 24 38 31 0.04 34 0 8 24 38 31 0.04 34 0 9 24 37 31 0.04 34 0 10 24 37 30 0.04 35 0 11 23 37 30 0.04 35 0 12 23 37 30 0.04 35 0 13 23 37 30 0.03 35 0 14 23 36 30 0.03 35 0 15 23 36 29 0.03 36 0 16 23 36 29 0.03 36 0 17 23 36 29 0.03 36 0 18 23 36 29 0.03 36 0 19 22 36 29 0.03 36 0 20 22 36 29 0.03 36 0 21 22 35 29 0.03 36 0 22 22 35 29 0.03 36 0 23 22 35 29 0.03 36 0 24 22 35 29 0.03 36 0 25 22 35 29 0.03 36 0 26 22 35 29 0.03 36 0 27 22 35 28 0.03 37 0 28 22 35 28 0.03 37 0 29 22 35 28 0.03 37 0 30 22 35 29 0.03 36 0 31 22 35 29 0.03 36 0 Month 23 37 30 1.05 1091 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