Annual
Climatology: Seattle, WA (SEA)
Elev: 400 ft Lat: 47o 28'N Long: 122o 19'W
Figure 1: Average Temperatures and Precipitation 1971-2000. (NCDC Data)
Month |
Daily Max |
Daily Min |
Mean |
Maximum Daily Temperature |
Minimum Daily Temperature |
January |
45.8 |
35.9 |
40.9 |
64 |
0 |
February |
49.5 |
37.2 |
43.3 |
70 |
1 |
March |
53.2 |
39.1 |
46.2 |
75 |
11 |
April |
58.2 |
42.1 |
50.2 |
85 |
29 |
May |
64.4 |
47.2 |
55.8 |
93 |
28 |
June |
69.6 |
51.7 |
60.7 |
96 |
38 |
July |
75.3 |
55.3 |
65.3 |
100 |
43 |
August |
75.6 |
55.7 |
65.6 |
99 |
44 |
September |
70.2 |
51.9 |
61.1 |
98 |
35 |
October |
59.7 |
45.7 |
52.7 |
89 |
28 |
November |
50.5 |
39.9 |
45.2 |
74 |
6 |
December |
45.5 |
35.9 |
40.7 |
64 |
6 |
Annual |
59.8 |
44.8 |
52.3 |
100 |
0 |
Month |
Mean |
Median |
Extreme |
Year |
Snow* |
January |
5.13 |
4.90 |
9.41 |
1990 |
2.4 |
February |
4.18 |
4.39 |
8.35 |
1996 |
1.3 |
March |
3.75 |
3.70 |
8.15 |
1997 |
0.6 |
April |
2.59 |
2.39 |
6.53 |
1991 |
0.1 |
May |
1.78 |
1.66 |
3.70 |
1977 |
0.0 |
June |
1.49 |
1.38 |
3.05 |
1990 |
0.0 |
July |
0.79 |
0.66 |
2.39 |
1983 |
0.0 |
August |
1.02 |
0.65 |
4.59 |
1975 |
0.0 |
September |
1.63 |
1.46 |
5.95 |
1978 |
0.0 |
October |
3.19 |
2.99 |
7.75 |
1975 |
0.1 |
November |
5.90 |
5.32 |
11.62 |
1998 |
1.1 |
December |
5.62 |
5.31 |
11.85 |
1979 |
2.5 |
Annual |
37.07 |
35.51 |
|
|
8.1 |
* Snowfall totals represent
mean snowfall 1971-2000
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