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39.45621, -77.96389

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 undefined 38.27 undefined 25.5 0
2 29 -1 49 10 39 4 0.24 undefined 38.39 undefined 25.8 0
3 29 -2 49 9 39 4 0.37 undefined 38.52 undefined 26.1 0
4 29 -2 48 9 39 4 0.49 undefined 38.64 undefined 26.4 0
5 29 -2 48 9 38 4 0.61 undefined 38.76 undefined 26.6 0
6 29 -2 48 9 38 3 0.73 undefined 38.88 undefined 26.9 0
7 28 -2 47 9 38 3 0.85 undefined 39 undefined 27.2 0
8 28 -2 47 8 38 3 0.96 undefined 39.11 undefined 27.4 0
9 28 -2 47 8 37 3 1.08 undefined 39.23 undefined 27.7 0
10 28 -2 46 8 37 3 1.2 undefined 39.35 undefined 27.9 0
11 28 -2 46 8 37 3 1.32 undefined 39.47 undefined 28.2 0
12 27 -3 46 8 37 3 1.43 undefined 39.58 undefined 28.4 0
13 27 -3 46 8 36 2 1.55 undefined 39.7 undefined 28.7 0
14 27 -3 45 7 36 2 1.67 undefined 39.82 undefined 28.9 0
15 27 -3 45 7 36 2 1.77 undefined 39.92 undefined 29.1 0
16 27 -3 45 7 36 2 1.88 undefined 40.03 undefined 29.3 0
17 26 -3 45 7 36 2 1.98 undefined 40.13 undefined 29.5 0
18 26 -3 44 7 35 2 2.09 undefined 40.24 undefined 29.7 0
19 26 -3 44 7 35 2 2.19 undefined 40.34 undefined 29.9 0
20 26 -3 44 7 35 2 2.3 undefined 40.45 undefined 30.1 0
21 26 -3 44 6 35 2 2.4 undefined 40.55 undefined 30.3 0
22 26 -4 43 6 35 1 2.51 undefined 40.66 undefined 30.5 0
23 25 -4 43 6 34 1 2.6 undefined 40.75 undefined 30.7 0
24 25 -4 43 6 34 1 2.7 undefined 40.85 undefined 30.8 0
25 25 -4 43 6 34 1 2.79 undefined 40.94 undefined 31 0
26 25 -4 43 6 34 1 2.88 undefined 41.03 undefined 31.2 0
27 25 -4 43 6 34 1 2.96 undefined 41.11 undefined 31.3 0
28 25 -4 42 6 34 1 3.03 undefined 41.18 undefined 31.4 0
29 25 -4 42 6 33 1 3.12 undefined 41.27 undefined 31.6 0
30 25 -4 42 6 33 1 3.2 undefined 41.35 undefined 31.7 0
31 24 -4 42 6 33 1 3.28 undefined 41.43 undefined 31.8 0

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