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39.97815, -76.79719

Normals for September

Temp ( °F °C ) Precip ( " mm ) Degree Days
Min Max Avg MTD YTD Heating Cooling
1 59 15 84 29 72 22 0.13 undefined 30.81 undefined 0.3 6.8
2 59 15 84 29 71 22 0.27 undefined 30.95 undefined 0.3 6.6
3 59 15 84 29 71 22 0.42 undefined 31.1 undefined 0.4 6.5
4 58 15 84 29 71 22 0.56 undefined 31.24 undefined 0.4 6.3
5 58 14 83 28 71 21 0.71 undefined 31.39 undefined 0.5 6.1
6 58 14 83 28 70 21 0.86 undefined 31.54 undefined 0.5 5.9
7 57 14 83 28 70 21 1 undefined 31.68 undefined 0.6 5.7
8 57 14 82 28 70 21 1.16 undefined 31.84 undefined 0.7 5.5
9 57 14 82 28 70 21 1.32 undefined 32 undefined 0.8 5.3
10 57 14 82 28 69 21 1.48 undefined 32.16 undefined 0.9 5.1
11 56 13 82 28 69 21 1.65 undefined 32.33 undefined 1 4.8
12 56 13 81 27 69 20 1.82 undefined 32.5 undefined 1.1 4.6
13 56 13 81 27 68 20 1.99 undefined 32.67 undefined 1.2 4.4
14 55 13 81 27 68 20 2.17 undefined 32.85 undefined 1.3 4.2
15 55 13 80 27 68 20 2.35 undefined 33.03 undefined 1.5 4
16 55 13 80 27 67 20 2.54 undefined 33.22 undefined 1.7 3.8
17 54 12 79 26 67 19 2.72 undefined 33.4 undefined 1.8 3.6
18 54 12 79 26 66 19 2.91 undefined 33.59 undefined 2 3.5
19 54 12 79 26 66 19 3.08 undefined 33.76 undefined 2.2 3.3
20 53 12 78 26 66 19 3.26 undefined 33.94 undefined 2.4 3.1
21 53 12 78 26 65 19 3.43 undefined 34.11 undefined 2.6 2.9
22 52 11 78 25 65 18 3.6 undefined 34.28 undefined 2.8 2.7
23 52 11 77 25 65 18 3.77 undefined 34.45 undefined 3 2.5
24 52 11 77 25 64 18 3.95 undefined 34.63 undefined 3.2 2.3
25 51 11 76 25 64 18 4.13 undefined 34.81 undefined 3.4 2.2
26 51 10 76 24 63 17 4.32 undefined 35 undefined 3.7 2
27 50 10 76 24 63 17 4.51 undefined 35.19 undefined 4 2
28 50 10 75 24 63 17 4.71 undefined 35.39 undefined 4.3 1.9
29 50 10 75 24 62 17 4.91 undefined 35.59 undefined 4.6 1.8
30 49 10 74 24 62 17 5.1 undefined 35.78 undefined 4.9 1.7

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