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Revision as of 09:57, 4 June 2011 by Someone35 (talk | contribs)(diff) ← Previous revision | Latest revision (diff) | Newer revision → (diff)| Climate data for Seattle (SeaTac Airport) | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
| Mean daily maximum °F (°C) | 44.9 (7.2) |
49.0 (9.4) |
52.2 (11.2) |
57.5 (14.2) |
64.1 (17.8) |
69.4 (20.8) |
75.1 (23.9) |
74.8 (23.8) |
69.4 (20.8) |
59.4 (15.2) |
50.4 (10.2) |
45.5 (7.5) |
59.3 (15.2) |
| Mean daily minimum °F (°C) | 35.1 (1.7) |
36.6 (2.6) |
38.2 (3.4) |
41.3 (5.2) |
46.5 (8.1) |
51.3 (10.7) |
54.6 (12.6) |
54.9 (12.7) |
51.4 (10.8) |
45.4 (7.4) |
39.5 (4.2) |
36.0 (2.2) |
44.2 (6.8) |
| Average precipitation inches (mm) | 5.79 (147) |
4.02 (102) |
3.71 (94) |
2.55 (65) |
1.70 (43) |
1.45 (37) |
.77 (20) |
1.10 (28) |
1.72 (44) |
3.50 (89) |
5.97 (152) |
5.81 (148) |
38.09 (967) |
| Average snowfall inches (cm) | 5.1 (13) |
1.7 (4.3) |
1.3 (3.3) |
.1 (0.25) |
0 (0) |
0 (0) |
0 (0) |
0 (0) |
0 (0) |
.1 (0.25) |
.9 (2.3) |
2.6 (6.6) |
11.8 (30) |
| Average precipitation days (≥ 0.01 in) | 17.8 | 15.7 | 16.4 | 13.6 | 11.6 | 8.5 | 5.3 | 5.5 | 8.3 | 11.7 | 17.9 | 17.8 | 150.1 |
| Average snowy days (≥ 0.1 in) | 1.8 | .9 | .4 | .1 | 0 | 0 | 0 | 0 | 0 | 0 | .6 | 1.6 | 5.4 |
| Mean monthly sunshine hours | 71.3 | 110.2 | 179.8 | 207.0 | 254.2 | 267.0 | 313.1 | 282.1 | 222.0 | 142.6 | 72.0 | 52.7 | 2,174 |
| Source 1: Western Regional Climate Center (1931−2005) , NOAA (precip and snow days, 1971−2000) | |||||||||||||
| Source 2: HKO (sun only, 1961−1990) | |||||||||||||
References
These references will appear in the article, but this list appears only on this page.- ^ "Period of Record Monthly Climate Summary". National Oceanic and Atmospheric Administration. 2010. Retrieved 2011-01-06. Cite error: The named reference "NWS" was defined multiple times with different content (see the help page).
- "Climatological Normals of Seattle". Hong Kong Observatory. Retrieved 2010-05-11.