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December Normals for Ancona, IL

< November January > Day Temperatures (°F) Precipitation (in) Degree Days Min Max Avg Heating Cooling 1 24 40 32 0.09 33 0 2 23 40 31 0.09 34 0 3 23 39 31 0.09 34 0 4 22 39 31 0.09 34 0 5 22 38 30 0.08 35 0 6 22 38 30 0.08 35 0 7 21 38 29 0.08 36 0 8 21 37 29 0.08 36 0 9 20 37 29 0.08 36 0 10 20 37 28 0.08 37 0 11 20 36 28 0.08 37 0 12 19 36 27 0.08 37 0 13 19 35 27 0.08 38 0 14 18 35 27 0.08 38 0 15 18 35 26 0.08 39 0 16 18 34 26 0.07 39 0 17 17 34 26 0.07 39 0 18 17 34 25 0.07 40 0 19 17 33 25 0.07 40 0 20 16 33 25 0.07 40 0 21 16 33 24 0.07 41 0 22 16 32 24 0.07 41 0 23 16 32 24 0.07 41 0 24 15 32 24 0.07 41 0 25 15 32 23 0.06 42 0 26 15 31 23 0.06 42 0 27 14 31 23 0.06 42 0 28 14 31 22 0.06 43 0 29 14 31 22 0.06 43 0 30 13 30 22 0.06 43 0 31 13 30 22 0.06 43 0 Month 18 35 26 2.29 1199 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