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December Normals for Neptune, IA

< November January > Day Temperatures (°F) Precipitation (in) Degree Days Min Max Avg Heating Cooling 1 16 35 25 0.03 40 0 2 15 34 25 0.03 40 0 3 15 34 25 0.03 41 0 4 15 34 24 0.03 41 0 5 14 33 24 0.03 41 0 6 14 33 23 0.03 42 0 7 13 33 23 0.03 42 0 8 13 32 23 0.03 42 0 9 13 32 22 0.03 43 0 10 12 31 22 0.03 43 0 11 12 31 22 0.02 43 0 12 12 31 21 0.02 44 0 13 11 31 21 0.02 44 0 14 11 30 21 0.02 44 0 15 11 30 20 0.02 45 0 16 10 30 20 0.02 45 0 17 10 29 20 0.02 45 0 18 10 29 19 0.02 46 0 19 10 29 19 0.02 46 0 20 9 29 19 0.02 46 0 21 9 28 19 0.02 46 0 22 9 28 18 0.02 47 0 23 8 28 18 0.02 47 0 24 8 28 18 0.02 47 0 25 8 27 18 0.02 47 0 26 8 27 18 0.02 48 0 27 8 27 17 0.02 48 0 28 7 27 17 0.02 48 0 29 7 27 17 0.02 48 0 30 7 27 17 0.02 48 0 31 7 26 17 0.02 48 0 Month 11 30 20 0.72 1385 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