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December Normals for Windsor, IL

< November January > Day Temperatures (°F) Precipitation (in) Degree Days Min Max Avg Heating Cooling 1 28 44 36 0.11 29 0 2 27 44 36 0.11 29 0 3 27 44 35 0.11 30 0 4 27 43 35 0.1 30 0 5 26 43 34 0.1 31 0 6 26 42 34 0.1 31 0 7 25 42 34 0.1 31 0 8 25 42 33 0.1 32 0 9 25 41 33 0.1 32 0 10 24 41 33 0.1 32 0 11 24 41 32 0.1 33 0 12 24 40 32 0.1 33 0 13 23 40 32 0.1 33 0 14 23 39 31 0.09 34 0 15 23 39 31 0.09 34 0 16 22 39 31 0.09 34 0 17 22 39 30 0.09 35 0 18 22 38 30 0.09 35 0 19 21 38 30 0.09 35 0 20 21 38 29 0.09 36 0 21 21 37 29 0.09 36 0 22 21 37 29 0.09 36 0 23 20 37 29 0.09 36 0 24 20 37 28 0.08 37 0 25 20 36 28 0.08 37 0 26 20 36 28 0.08 37 0 27 19 36 28 0.08 37 0 28 19 36 27 0.08 38 0 29 19 36 27 0.08 38 0 30 19 35 27 0.08 38 0 31 18 35 27 0.08 38 0 Month 23 39 31 2.87 1057 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