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December Normals for Walla Walla, WA

< November January > Day Temperatures (°F) Precipitation (in) Degree Days Min Max Avg Heating Cooling 1 29 44 36 0.06 29 0 2 29 43 36 0.06 29 0 3 29 43 36 0.06 29 0 4 29 43 36 0.06 29 0 5 28 43 35 0.06 30 0 6 28 42 35 0.06 30 0 7 28 42 35 0.06 30 0 8 28 42 35 0.06 30 0 9 27 42 35 0.06 30 0 10 27 41 34 0.06 31 0 11 27 41 34 0.06 31 0 12 27 41 34 0.06 31 0 13 27 41 34 0.06 31 0 14 27 41 34 0.05 31 0 15 26 41 34 0.05 32 0 16 26 40 33 0.05 32 0 17 26 40 33 0.05 32 0 18 26 40 33 0.05 32 0 19 26 40 33 0.05 32 0 20 26 40 33 0.05 32 0 21 26 40 33 0.05 32 0 22 26 40 33 0.05 32 0 23 26 40 33 0.05 32 0 24 26 39 33 0.05 33 0 25 25 39 32 0.05 33 0 26 25 39 32 0.05 33 0 27 25 39 32 0.05 33 0 28 25 39 32 0.05 33 0 29 25 39 32 0.05 33 0 30 25 39 32 0.05 33 0 31 25 39 32 0.05 33 0 Month 27 41 34 1.68 973 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