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38.89511, -77.03637

Normals for September

Temp ( °F °C ) Precip ( " mm ) Degree Days
Min Max Avg MTD YTD Heating Cooling
1 69 20 85 30 77 25 0.12 undefined 28.03 undefined 0 12
2 68 20 85 30 77 25 0.25 undefined 28.16 undefined 0 11.8
3 68 20 85 29 77 25 0.38 undefined 28.29 undefined 0 11.5
4 68 20 85 29 76 25 0.51 undefined 28.42 undefined 0 11.2
5 68 20 84 29 76 24 0.64 undefined 28.55 undefined 0 11
6 67 20 84 29 76 24 0.76 undefined 28.67 undefined 0 10.7
7 67 20 84 29 75 24 0.89 undefined 28.8 undefined 0 10.4
8 67 19 83 29 75 24 1.02 undefined 28.93 undefined 0.1 10.1
9 67 19 83 28 75 24 1.15 undefined 29.06 undefined 0.1 9.9
10 66 19 83 28 75 24 1.28 undefined 29.19 undefined 0.1 9.6
11 66 19 82 28 74 23 1.41 undefined 29.32 undefined 0.1 9.3
12 66 19 82 28 74 23 1.54 undefined 29.45 undefined 0.1 8.9
13 65 18 82 28 74 23 1.67 undefined 29.58 undefined 0.2 8.6
14 65 18 81 27 73 23 1.81 undefined 29.72 undefined 0.2 8.3
15 65 18 81 27 73 23 1.95 undefined 29.86 undefined 0.3 8.1
16 64 18 81 27 72 22 2.1 undefined 30.01 undefined 0.3 7.8
17 64 18 80 27 72 22 2.24 undefined 30.15 undefined 0.4 7.5
18 63 17 80 27 72 22 2.38 undefined 30.29 undefined 0.4 7.2
19 63 17 80 26 71 22 2.52 undefined 30.43 undefined 0.5 6.8
20 63 17 79 26 71 22 2.65 undefined 30.56 undefined 0.6 6.5
21 62 17 79 26 71 21 2.78 undefined 30.69 undefined 0.7 6.2
22 62 17 79 26 70 21 2.9 undefined 30.81 undefined 0.7 5.9
23 62 16 78 26 70 21 3.02 undefined 30.93 undefined 0.8 5.6
24 61 16 78 25 69 21 3.15 undefined 31.06 undefined 0.9 5.3
25 61 16 77 25 69 21 3.27 undefined 31.18 undefined 1 5.1
26 60 16 77 25 69 20 3.4 undefined 31.31 undefined 1.2 4.9
27 60 16 77 25 68 20 3.53 undefined 31.44 undefined 1.4 4.6
28 60 15 76 25 68 20 3.66 undefined 31.57 undefined 1.6 4.4
29 59 15 76 24 67 20 3.79 undefined 31.7 undefined 1.8 4.2
30 59 15 75 24 67 19 3.93 undefined 31.84 undefined 2 4

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