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39.04372, -77.48749

Normals for December

Temp ( °F °C ) Precip ( " mm ) Degree Days
Min Max Avg MTD YTD Heating Cooling
1 30 -1 50 10 40 4 0.12 3 39.96 1015 25 0
2 30 -1 49 10 40 4 0.24 6 40.08 1018 26 0
3 29 -1 49 9 39 4 0.36 9 40.2 1021 26 0
4 29 -2 49 9 39 4 0.48 12 40.32 1024 26 0
5 29 -2 48 9 38 4 0.6 15 40.44 1027 27 0
6 29 -2 48 9 38 3 0.72 18 40.56 1030 27 0
7 28 -2 47 9 38 3 0.83 21 40.67 1033 27 0
8 28 -2 47 8 38 3 0.94 24 40.78 1036 28 0
9 28 -2 47 8 37 3 1.06 27 40.9 1039 28 0
10 28 -2 46 8 37 3 1.17 30 41.01 1042 28 0
11 27 -3 46 8 37 3 1.28 33 41.12 1044 28 0
12 27 -3 46 8 36 2 1.39 35 41.23 1047 29 0
13 27 -3 45 7 36 2 1.5 38 41.34 1050 29 0
14 27 -3 45 7 36 2 1.59 40 41.43 1052 29 0
15 26 -3 45 7 35 2 1.69 43 41.53 1055 30 0
16 26 -3 44 7 35 2 1.79 45 41.63 1057 30 0
17 26 -3 44 7 35 2 1.88 48 41.72 1060 30 0
18 26 -3 44 7 35 2 1.97 50 41.81 1062 30 0
19 26 -4 43 6 35 1 2.06 52 41.9 1064 31 0
20 25 -4 43 6 34 1 2.15 55 41.99 1067 31 0
21 25 -4 43 6 34 1 2.24 57 42.08 1069 31 0
22 25 -4 43 6 34 1 2.33 59 42.17 1071 31 0
23 25 -4 43 6 34 1 2.42 61 42.26 1073 31 0
24 25 -4 42 6 34 1 2.51 64 42.35 1076 31 0
25 25 -4 42 6 33 1 2.6 66 42.44 1078 32 0
26 24 -4 42 6 33 1 2.69 68 42.53 1080 32 0
27 24 -4 42 5 33 1 2.78 71 42.62 1083 32 0
28 24 -4 42 5 33 1 2.86 73 42.7 1085 32 0
29 24 -4 42 5 33 0 2.94 75 42.78 1087 32 0
30 24 -4 41 5 33 0 3.02 77 42.86 1089 32 0
31 24 -4 41 5 33 0 3.09 78 42.93 1090 32 0

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