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December Normals for West Haven, CT

< November January > Day Temperatures (°F) Precipitation (in) Degree Days Min Max Avg Heating Cooling 1 24 44 34 0.14 31 0 2 23 43 33 0.14 32 0 3 23 43 33 0.14 32 0 4 23 42 33 0.14 32 0 5 22 42 32 0.14 33 0 6 22 42 32 0.14 33 0 7 22 41 31 0.14 34 0 8 21 41 31 0.14 34 0 9 21 40 31 0.14 34 0 10 21 40 30 0.14 35 0 11 21 40 30 0.14 35 0 12 20 39 30 0.14 35 0 13 20 39 30 0.14 36 0 14 20 39 29 0.13 36 0 15 19 38 29 0.13 36 0 16 19 38 29 0.13 36 0 17 19 38 28 0.13 37 0 18 19 37 28 0.13 37 0 19 18 37 28 0.13 37 0 20 18 37 28 0.13 37 0 21 18 37 27 0.13 38 0 22 17 36 27 0.13 38 0 23 17 36 27 0.13 38 0 24 17 36 27 0.13 38 0 25 17 36 26 0.13 39 0 26 16 36 26 0.13 39 0 27 16 36 26 0.13 39 0 28 16 35 26 0.13 39 0 29 16 35 25 0.13 40 0 30 15 35 25 0.13 40 0 31 15 35 25 0.14 40 0 Month 19 39 29 4.17 1120 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