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December Normals for Glastonbury, CT

< November January > Day Temperatures (°F) Precipitation (in) Degree Days Min Max Avg Heating Cooling 1 27 44 36 0.13 29 0 2 27 44 35 0.12 29 0 3 27 43 35 0.12 30 0 4 26 43 35 0.12 30 0 5 26 43 34 0.12 31 0 6 26 42 34 0.12 31 0 7 25 42 34 0.12 31 0 8 25 41 33 0.12 32 0 9 25 41 33 0.12 32 0 10 24 41 32 0.12 32 0 11 24 40 32 0.12 33 0 12 24 40 32 0.11 33 0 13 23 40 31 0.11 33 0 14 23 39 31 0.11 34 0 15 23 39 31 0.11 34 0 16 22 39 30 0.11 34 0 17 22 38 30 0.11 35 0 18 22 38 30 0.11 35 0 19 21 38 30 0.11 35 0 20 21 37 29 0.11 35 0 21 21 37 29 0.11 36 0 22 21 37 29 0.11 36 0 23 20 37 29 0.11 36 0 24 20 37 28 0.11 36 0 25 20 36 28 0.12 37 0 26 20 36 28 0.12 37 0 27 20 36 28 0.12 37 0 28 19 36 28 0.12 37 0 29 19 35 27 0.12 38 0 30 19 35 27 0.12 38 0 31 19 35 27 0.12 38 0 Month 23 39 31 3.6 1054 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