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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 3.00 39.96 1015.00 25 0
2 30 -1 49 10 40 4 0.24 6.00 40.08 1018.00 26 0
3 29 -1 49 9 39 4 0.36 9.00 40.20 1021.00 26 0
4 29 -2 49 9 39 4 0.48 12.00 40.32 1024.00 26 0
5 29 -2 48 9 38 4 0.60 15.00 40.44 1027.00 27 0
6 29 -2 48 9 38 3 0.72 18.00 40.56 1030.00 27 0
7 28 -2 47 9 38 3 0.83 21.00 40.67 1033.00 27 0
8 28 -2 47 8 38 3 0.94 24.00 40.78 1036.00 28 0
9 28 -2 47 8 37 3 1.06 27.00 40.90 1039.00 28 0
10 28 -2 46 8 37 3 1.17 30.00 41.01 1042.00 28 0
11 27 -3 46 8 37 3 1.28 33.00 41.12 1044.00 28 0
12 27 -3 46 8 36 2 1.39 35.00 41.23 1047.00 29 0
13 27 -3 45 7 36 2 1.50 38.00 41.34 1050.00 29 0
14 27 -3 45 7 36 2 1.59 40.00 41.43 1052.00 29 0
15 26 -3 45 7 35 2 1.69 43.00 41.53 1055.00 30 0
16 26 -3 44 7 35 2 1.79 45.00 41.63 1057.00 30 0
17 26 -3 44 7 35 2 1.88 48.00 41.72 1060.00 30 0
18 26 -3 44 7 35 2 1.97 50.00 41.81 1062.00 30 0
19 26 -4 43 6 35 1 2.06 52.00 41.90 1064.00 31 0
20 25 -4 43 6 34 1 2.15 55.00 41.99 1067.00 31 0
21 25 -4 43 6 34 1 2.24 57.00 42.08 1069.00 31 0
22 25 -4 43 6 34 1 2.33 59.00 42.17 1071.00 31 0
23 25 -4 43 6 34 1 2.42 61.00 42.26 1073.00 31 0
24 25 -4 42 6 34 1 2.51 64.00 42.35 1076.00 31 0
25 25 -4 42 6 33 1 2.60 66.00 42.44 1078.00 32 0
26 24 -4 42 6 33 1 2.69 68.00 42.53 1080.00 32 0
27 24 -4 42 5 33 1 2.78 71.00 42.62 1083.00 32 0
28 24 -4 42 5 33 1 2.86 73.00 42.70 1085.00 32 0
29 24 -4 42 5 33 0 2.94 75.00 42.78 1087.00 32 0
30 24 -4 41 5 33 0 3.02 77.00 42.86 1089.00 32 0
31 24 -4 41 5 33 0 3.09 78.00 42.93 1090.00 32 0