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47.8601, -122.2043

Normals for September

Temp ( °F °C ) Precip ( " mm ) Degree Days
Min Max Avg MTD YTD Heating Cooling
1 54 12 71 22 63 17 0.04 undefined 18.89 undefined 3 0.8
2 54 12 71 22 63 17 0.08 undefined 18.93 undefined 3.1 0.8
3 54 12 71 22 63 17 0.13 undefined 18.98 undefined 3.2 0.7
4 54 12 71 22 62 17 0.18 undefined 19.03 undefined 3.3 0.7
5 54 12 71 21 62 17 0.23 undefined 19.08 undefined 3.5 0.7
6 54 12 70 21 62 17 0.28 undefined 19.13 undefined 3.6 0.7
7 54 12 70 21 62 17 0.32 undefined 19.17 undefined 3.7 0.6
8 54 12 70 21 62 17 0.37 undefined 19.22 undefined 3.9 0.6
9 54 12 70 21 62 16 0.42 undefined 19.27 undefined 4 0.6
10 53 12 70 21 61 16 0.48 undefined 19.33 undefined 4.1 0.5
11 53 12 69 21 61 16 0.53 undefined 19.38 undefined 4.3 0.5
12 53 12 69 21 61 16 0.59 undefined 19.44 undefined 4.4 0.4
13 53 12 69 20 61 16 0.64 undefined 19.49 undefined 4.6 0.3
14 53 12 68 20 61 16 0.7 undefined 19.55 undefined 4.7 0.3
15 53 11 68 20 60 16 0.75 undefined 19.6 undefined 4.9 0.3
16 52 11 68 20 60 16 0.81 undefined 19.66 undefined 5.2 0.3
17 52 11 68 20 60 16 0.86 undefined 19.71 undefined 5.4 0.3
18 52 11 67 20 60 15 0.92 undefined 19.77 undefined 5.6 0.2
19 52 11 67 19 59 15 0.98 undefined 19.83 undefined 5.8 0.2
20 52 11 67 19 59 15 1.04 undefined 19.89 undefined 6 0.2
21 52 11 66 19 59 15 1.09 undefined 19.94 undefined 6.3 0.2
22 51 11 66 19 59 15 1.15 undefined 20 undefined 6.5 0.2
23 51 11 66 19 58 15 1.21 undefined 20.06 undefined 6.8 0.2
24 51 11 65 19 58 15 1.27 undefined 20.12 undefined 7.1 0.1
25 51 10 65 18 58 14 1.34 undefined 20.19 undefined 7.3 0.1
26 51 10 65 18 58 14 1.4 undefined 20.25 undefined 7.6 0.1
27 50 10 64 18 57 14 1.47 undefined 20.32 undefined 7.9 0.1
28 50 10 64 18 57 14 1.53 undefined 20.38 undefined 8.2 0.1
29 50 10 64 18 57 14 1.61 undefined 20.46 undefined 8.4 0.1
30 50 10 63 17 56 14 1.68 undefined 20.53 undefined 8.7 0.1

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