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December Normals for Itasca, IL

< November January > Day Temperatures (°F) Precipitation (in) Degree Days Min Max Avg Heating Cooling 1 23 38 30 0.09 35 0 2 22 38 30 0.08 35 0 3 22 37 30 0.08 35 0 4 21 37 29 0.08 36 0 5 21 36 29 0.08 36 0 6 21 36 28 0.08 37 0 7 20 35 28 0.08 37 0 8 20 35 27 0.08 38 0 9 20 35 27 0.07 38 0 10 19 34 27 0.07 38 0 11 19 34 26 0.07 39 0 12 18 33 26 0.07 39 0 13 18 33 26 0.07 39 0 14 18 33 25 0.07 40 0 15 17 32 25 0.07 40 0 16 17 32 24 0.07 40 0 17 17 32 24 0.06 41 0 18 16 31 24 0.06 41 0 19 16 31 23 0.06 42 0 20 15 31 23 0.06 42 0 21 15 31 23 0.06 42 0 22 15 30 23 0.06 42 0 23 14 30 22 0.06 43 0 24 14 30 22 0.06 43 0 25 14 29 22 0.06 43 0 26 13 29 21 0.06 44 0 27 13 29 21 0.06 44 0 28 13 29 21 0.06 44 0 29 12 28 20 0.06 45 0 30 12 28 20 0.05 45 0 31 12 28 20 0.05 45 0 Month 17 32 25 2.09 1248 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