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December Normals for Yorktown, IA

< November January > Day Temperatures (°F) Precipitation (in) Degree Days Min Max Avg Heating Cooling 1 22 40 31 0.05 34 0 2 22 40 31 0.05 34 0 3 21 39 30 0.05 35 0 4 21 39 30 0.05 35 0 5 21 39 30 0.05 35 0 6 20 38 29 0.05 36 0 7 20 38 29 0.04 36 0 8 19 37 28 0.04 37 0 9 19 37 28 0.04 37 0 10 19 37 28 0.04 37 0 11 18 36 27 0.04 38 0 12 18 36 27 0.04 38 0 13 18 36 27 0.04 38 0 14 17 35 26 0.04 39 0 15 17 35 26 0.04 39 0 16 17 35 26 0.03 39 0 17 16 34 25 0.03 40 0 18 16 34 25 0.03 40 0 19 16 34 25 0.03 40 0 20 15 34 25 0.03 40 0 21 15 33 24 0.03 41 0 22 15 33 24 0.03 41 0 23 15 33 24 0.03 41 0 24 14 33 23 0.03 42 0 25 14 32 23 0.03 42 0 26 14 32 23 0.03 42 0 27 14 32 23 0.03 42 0 28 13 32 23 0.03 42 0 29 13 32 22 0.03 43 0 30 13 32 22 0.03 43 0 31 12 31 22 0.03 43 0 Month 17 35 26 1.14 1209 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