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December Normals for Wilton, CT

< November January > Day Temperatures (°F) Precipitation (in) Degree Days Min Max Avg Heating Cooling 1 29 44 36 0.14 29 0 2 28 43 36 0.13 29 0 3 28 43 35 0.13 30 0 4 28 43 35 0.13 30 0 5 27 42 35 0.13 30 0 6 27 42 34 0.13 31 0 7 26 41 34 0.13 31 0 8 26 41 34 0.12 31 0 9 26 41 33 0.12 32 0 10 25 40 33 0.12 32 0 11 25 40 33 0.12 32 0 12 25 40 32 0.12 33 0 13 25 39 32 0.12 33 0 14 24 39 32 0.12 33 0 15 24 39 31 0.12 34 0 16 24 39 31 0.12 34 0 17 23 38 31 0.12 34 0 18 23 38 30 0.12 35 0 19 23 38 30 0.12 35 0 20 22 37 30 0.12 35 0 21 22 37 30 0.12 35 0 22 22 37 29 0.12 36 0 23 22 37 29 0.12 36 0 24 21 36 29 0.12 36 0 25 21 36 29 0.12 36 0 26 21 36 28 0.12 37 0 27 21 36 28 0.12 37 0 28 20 36 28 0.12 37 0 29 20 35 28 0.12 37 0 30 20 35 28 0.12 37 0 31 20 35 27 0.13 38 0 Month 24 39 31 3.81 1045 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