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December Normals for Lannon, WI

< November January > Day Temperatures (°F) Precipitation (in) Degree Days Min Max Avg Heating Cooling 1 21 36 28 0.08 37 0 2 20 35 28 0.07 37 0 3 20 35 27 0.07 38 0 4 19 35 27 0.07 38 0 5 19 34 26 0.07 39 0 6 18 34 26 0.07 39 0 7 18 33 26 0.07 39 0 8 18 33 25 0.06 40 0 9 17 32 25 0.06 40 0 10 17 32 24 0.06 41 0 11 16 32 24 0.06 41 0 12 16 31 24 0.06 41 0 13 16 31 23 0.06 42 0 14 15 31 23 0.06 42 0 15 15 30 23 0.06 42 0 16 14 30 22 0.06 43 0 17 14 30 22 0.05 43 0 18 14 29 22 0.05 44 0 19 13 29 21 0.05 44 0 20 13 29 21 0.05 44 0 21 13 28 21 0.05 44 0 22 12 28 20 0.05 45 0 23 12 28 20 0.05 45 0 24 12 28 20 0.05 45 0 25 11 27 19 0.05 46 0 26 11 27 19 0.05 46 0 27 11 27 19 0.05 46 0 28 11 27 19 0.05 46 0 29 10 26 18 0.05 47 0 30 10 26 18 0.05 47 0 31 10 26 18 0.05 47 0 Month 15 30 23 1.79 1318 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