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December Normals for Derry, NH

< November January > Day Temperatures (°F) Precipitation (in) Degree Days Min Max Avg Heating Cooling 1 23 40 31 0.14 34 0 2 22 40 31 0.14 34 0 3 22 40 31 0.14 34 0 4 21 39 30 0.13 35 0 5 21 39 30 0.13 35 0 6 20 38 29 0.13 36 0 7 20 38 29 0.13 36 0 8 20 38 29 0.13 36 0 9 19 37 28 0.13 37 0 10 19 37 28 0.13 37 0 11 18 37 28 0.13 37 0 12 18 36 27 0.13 38 0 13 18 36 27 0.13 38 0 14 17 36 27 0.13 39 0 15 17 35 26 0.13 39 0 16 17 35 26 0.13 39 0 17 16 35 26 0.13 39 0 18 16 34 25 0.13 40 0 19 16 34 25 0.13 40 0 20 15 34 25 0.13 40 0 21 15 34 24 0.13 41 0 22 15 33 24 0.13 41 0 23 14 33 24 0.13 41 0 24 14 33 24 0.13 41 0 25 14 33 23 0.13 42 0 26 14 33 23 0.13 42 0 27 13 32 23 0.13 42 0 28 13 32 23 0.13 42 0 29 13 32 22 0.13 43 0 30 12 32 22 0.13 43 0 31 12 32 22 0.13 43 0 Month 17 35 26 4.06 1204 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