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47.75676, -122.28096

Normals for September

Temp ( °F °C ) Precip ( " mm ) Degree Days
Min Max Avg MTD YTD Heating Cooling
1 56 13 75 24 65 19 0.04 undefined 21.07 undefined 1.5 1.7
2 56 13 75 24 65 18 0.09 undefined 21.12 undefined 1.5 1.6
3 55 13 75 24 65 18 0.14 undefined 21.17 undefined 1.6 1.6
4 55 13 74 24 65 18 0.19 undefined 21.22 undefined 1.7 1.5
5 55 13 74 23 65 18 0.24 undefined 21.27 undefined 1.8 1.4
6 55 13 74 23 64 18 0.29 undefined 21.32 undefined 1.9 1.3
7 55 13 74 23 64 18 0.35 undefined 21.38 undefined 2 1.2
8 55 13 74 23 64 18 0.4 undefined 21.43 undefined 2.1 1.2
9 55 13 73 23 64 18 0.45 undefined 21.48 undefined 2.2 1.1
10 54 12 73 23 64 18 0.51 undefined 21.54 undefined 2.4 1.1
11 54 12 73 23 64 18 0.56 undefined 21.59 undefined 2.5 1
12 54 12 73 23 63 17 0.62 undefined 21.65 undefined 2.7 0.9
13 54 12 72 22 63 17 0.68 undefined 21.71 undefined 2.8 0.8
14 54 12 72 22 63 17 0.73 undefined 21.76 undefined 2.9 0.8
15 53 12 72 22 63 17 0.79 undefined 21.82 undefined 3.1 0.7
16 53 12 72 22 62 17 0.85 undefined 21.88 undefined 3.3 0.7
17 53 12 71 22 62 17 0.91 undefined 21.94 undefined 3.5 0.6
18 53 12 71 22 62 17 0.97 undefined 22 undefined 3.7 0.6
19 53 12 71 21 62 16 1.03 undefined 22.06 undefined 3.9 0.5
20 53 11 70 21 61 16 1.09 undefined 22.12 undefined 4.1 0.5
21 52 11 70 21 61 16 1.14 undefined 22.17 undefined 4.4 0.5
22 52 11 70 21 61 16 1.2 undefined 22.23 undefined 4.6 0.4
23 52 11 69 21 61 16 1.26 undefined 22.29 undefined 4.9 0.4
24 52 11 69 20 60 16 1.32 undefined 22.35 undefined 5.1 0.3
25 51 11 69 20 60 16 1.39 undefined 22.42 undefined 5.4 0.3
26 51 11 68 20 60 15 1.45 undefined 22.48 undefined 5.6 0.3
27 51 11 68 20 59 15 1.52 undefined 22.55 undefined 5.9 0.2
28 51 10 67 20 59 15 1.59 undefined 22.62 undefined 6.2 0.2
29 51 10 67 19 59 15 1.67 undefined 22.7 undefined 6.4 0.2
30 50 10 67 19 58 15 1.74 undefined 22.77 undefined 6.7 0.1

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