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December Normals for Winthrop, IA

< November January > Day Temperatures (°F) Precipitation (in) Degree Days Min Max Avg Heating Cooling 1 18 34 26 0.06 39 0 2 17 34 25 0.06 40 0 3 17 33 25 0.06 40 0 4 16 33 25 0.06 40 0 5 16 33 24 0.05 41 0 6 15 32 24 0.05 41 0 7 15 32 23 0.05 42 0 8 15 31 23 0.05 42 0 9 14 31 22 0.05 43 0 10 14 30 22 0.05 43 0 11 13 30 22 0.05 43 0 12 13 30 21 0.05 44 0 13 13 29 21 0.05 44 0 14 12 29 21 0.05 44 0 15 12 29 20 0.05 45 0 16 11 28 20 0.05 45 0 17 11 28 19 0.05 45 0 18 11 28 19 0.05 46 0 19 10 27 19 0.04 46 0 20 10 27 19 0.04 46 0 21 10 27 18 0.04 47 0 22 9 27 18 0.04 47 0 23 9 26 18 0.04 47 0 24 9 26 17 0.04 48 0 25 8 26 17 0.04 48 0 26 8 26 17 0.04 48 0 27 8 25 17 0.04 48 0 28 8 25 16 0.04 49 0 29 7 25 16 0.04 49 0 30 7 25 16 0.04 49 0 31 7 24 16 0.04 49 0 Month 12 29 20 1.46 1388 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