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38.9258, -77.40156

Normals for December

Temp ( °F °C ) Precip ( " mm ) Degree Days
Min Max Avg MTD YTD Heating Cooling
1 32 0 51 10 41 5 0.11 undefined 40.05 undefined 23.7 0
2 32 0 50 10 41 5 0.22 undefined 40.16 undefined 24 0
3 31 0 50 10 41 5 0.34 undefined 40.28 undefined 24.3 0
4 31 0 50 10 40 5 0.45 undefined 40.39 undefined 24.6 0
5 31 -1 49 10 40 5 0.57 undefined 40.51 undefined 24.8 0
6 31 -1 49 10 40 4 0.69 undefined 40.63 undefined 25.1 0
7 31 -1 49 9 40 4 0.8 undefined 40.74 undefined 25.3 0
8 30 -1 48 9 39 4 0.91 undefined 40.85 undefined 25.6 0
9 30 -1 48 9 39 4 1.03 undefined 40.97 undefined 25.8 0
10 30 -1 48 9 39 4 1.14 undefined 41.08 undefined 26.1 0
11 30 -1 48 9 39 4 1.26 undefined 41.2 undefined 26.3 0
12 30 -1 47 9 38 4 1.37 undefined 41.31 undefined 26.6 0
13 29 -1 47 8 38 3 1.48 undefined 41.42 undefined 26.8 0
14 29 -2 47 8 38 3 1.59 undefined 41.53 undefined 27 0
15 29 -2 47 8 38 3 1.7 undefined 41.64 undefined 27.2 0
16 29 -2 46 8 38 3 1.81 undefined 41.75 undefined 27.4 0
17 29 -2 46 8 37 3 1.91 undefined 41.85 undefined 27.7 0
18 29 -2 46 8 37 3 2.02 undefined 41.96 undefined 27.9 0
19 28 -2 46 8 37 3 2.12 undefined 42.06 undefined 28.1 0
20 28 -2 45 7 37 3 2.23 undefined 42.17 undefined 28.3 0
21 28 -2 45 7 37 3 2.33 undefined 42.27 undefined 28.4 0
22 28 -2 45 7 36 2 2.43 undefined 42.37 undefined 28.6 0
23 28 -2 45 7 36 2 2.54 undefined 42.48 undefined 28.8 0
24 28 -2 45 7 36 2 2.64 undefined 42.58 undefined 29 0
25 27 -3 44 7 36 2 2.74 undefined 42.68 undefined 29.1 0
26 27 -3 44 7 36 2 2.83 undefined 42.77 undefined 29.3 0
27 27 -3 44 7 36 2 2.93 undefined 42.87 undefined 29.5 0
28 27 -3 44 7 35 2 3.03 undefined 42.97 undefined 29.6 0
29 27 -3 44 6 35 2 3.12 undefined 43.06 undefined 29.8 0
30 27 -3 44 6 35 2 3.21 undefined 43.15 undefined 29.9 0
31 27 -3 43 6 35 2 3.3 undefined 43.24 undefined 30 0

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