Revision as of 03:36, 1 November 2013 editSsbbplayer (talk | contribs)Extended confirmed users21,300 editsm use absolute monthly values for sunshine hours, not the hko source since their values are not the same as the wmo ones← Previous edit | Revision as of 22:13, 2 February 2014 edit undoOHWiki (talk | contribs)Extended confirmed users4,950 edits minor fixes to match ref. for 1981-2010 averagesNext edit → | ||
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|single line = Y | |single line = Y | ||
|collapsed = Y | |collapsed = Y | ||
|Jan high F = |
|Jan high F = 46.8 | ||
|Feb high F = 49. |
|Feb high F = 49.6 | ||
|Mar high F = 53. |
|Mar high F = 53.4 | ||
|Apr high F = 58. |
|Apr high F = 58.1 | ||
|May high F = 64. |
|May high F = 64.3 | ||
|Jun high F = 69. |
|Jun high F = 69.6 | ||
|Jul high F = 75. |
|Jul high F = 75.5 | ||
|Aug high F = |
|Aug high F = 75.9 | ||
|Sep high F = 70. |
|Sep high F = 70.1 | ||
|Oct high F = 59. |
|Oct high F = 59.3 | ||
|Nov high F = 50. |
|Nov high F = 50.5 | ||
|Dec high F = 45. |
|Dec high F = 45.3 | ||
|year high F= |
|year high F= 59.9 | ||
|Jan mean F= |
|Jan mean F= 41.8 | ||
|Feb mean F= 43. |
|Feb mean F= 43.2 | ||
|Mar mean F= 46. |
|Mar mean F= 46.3 | ||
|Apr mean F= 50. |
|Apr mean F= 50.2 | ||
|May mean F= |
|May mean F= 55.8 | ||
|Jun mean F= 60. |
|Jun mean F= 60.7 | ||
|Jul mean F= 65. |
|Jul mean F= 65.5 | ||
|Aug mean F= |
|Aug mean F= 65.9 | ||
|Sep mean F= 61. |
|Sep mean F= 61.1 | ||
|Oct mean F= 52. |
|Oct mean F= 52.6 | ||
|Nov mean F= 45. |
|Nov mean F= 45.3 | ||
|Dec mean F= 40. |
|Dec mean F= 40.4 | ||
|year mean F= 52. |
|year mean F= 52.4 | ||
|Jan low F = 36. |
|Jan low F = 36.8 | ||
|Feb low F = 36.9 | |Feb low F = 36.9 | ||
|Mar low F = 39.3 | |Mar low F = 39.3 |
Revision as of 22:13, 2 February 2014
Climate data for Seattle (SeaTac Airport), 1981–2010 normals | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
Record high °F (°C) | 64 (18) |
70 (21) |
78 (26) |
85 (29) |
93 (34) |
96 (36) |
103 (39) |
99 (37) |
98 (37) |
89 (32) |
74 (23) |
64 (18) |
103 (39) |
Mean daily maximum °F (°C) | 46.8 (8.2) |
49.6 (9.8) |
53.4 (11.9) |
58.1 (14.5) |
64.3 (17.9) |
69.6 (20.9) |
75.5 (24.2) |
75.9 (24.4) |
70.1 (21.2) |
59.3 (15.2) |
50.5 (10.3) |
45.3 (7.4) |
59.9 (15.5) |
Daily mean °F (°C) | 41.8 (5.4) |
43.2 (6.2) |
46.3 (7.9) |
50.2 (10.1) |
55.8 (13.2) |
60.7 (15.9) |
65.5 (18.6) |
65.9 (18.8) |
61.1 (16.2) |
52.6 (11.4) |
45.3 (7.4) |
40.4 (4.7) |
52.4 (11.3) |
Mean daily minimum °F (°C) | 36.8 (2.7) |
36.9 (2.7) |
39.3 (4.1) |
42.2 (5.7) |
47.3 (8.5) |
51.9 (11.1) |
55.6 (13.1) |
55.9 (13.3) |
52.1 (11.2) |
45.8 (7.7) |
40.0 (4.4) |
35.6 (2.0) |
45.0 (7.2) |
Record low °F (°C) | 0 (−18) |
1 (−17) |
11 (−12) |
29 (−2) |
28 (−2) |
38 (3) |
43 (6) |
44 (7) |
35 (2) |
28 (−2) |
6 (−14) |
6 (−14) |
0 (−18) |
Average precipitation inches (mm) | 5.56 (141) |
3.50 (89) |
3.72 (94) |
2.71 (69) |
1.93 (49) |
1.56 (40) |
0.70 (18) |
0.88 (22) |
1.45 (37) |
3.48 (88) |
6.57 (167) |
5.35 (136) |
37.41 (950) |
Average snowfall inches (cm) | 1.3 (3.3) |
1.4 (3.6) |
0.7 (1.8) |
0 (0) |
0 (0) |
0 (0) |
0 (0) |
0 (0) |
0 (0) |
0 (0) |
1.1 (2.8) |
1.5 (3.8) |
5.9 (15) |
Average precipitation days (≥ 0.01 in) | 18.2 | 14.7 | 16.9 | 14.3 | 12.0 | 9.1 | 5.0 | 4.8 | 7.9 | 13.1 | 18.4 | 17.6 | 152.0 |
Average snowy days (≥ 0.1 in) | 1.1 | 0.7 | 0.5 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0.4 | 1.4 | 4.1 |
Mean monthly sunshine hours | 69.8 | 108.8 | 178.4 | 207.3 | 253.7 | 268.4 | 312.0 | 281.4 | 221.7 | 142.6 | 72.7 | 52.9 | 2,169.7 |
Source: NOAA (extremes 1948–present, sun 1961–1990) |
References
These references will appear in the article, but this list appears only on this page.- "NowData - NOAA Online Weather Data". National Oceanic and Atmospheric Administration. Retrieved 2011-12-15.
- "WMO Climate Normals for Seattle/Seattle–Tacoma INTL A, WA 1961–1990". National Oceanic and Atmospheric Administration. Retrieved October 31, 2013.