Temperature Data | Precipitation Data | Detailed Data

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Annual Climatology: Seattle, WA (SEA)

Elev: 400 ft    Lat: 47^o 28'N    Long: 122^o 19'W

Figure 1: Average Temperatures and Precipitation 1971-2000. (NCDC Data)

Temperature Data (^oF) :

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

Precipitation Data (in):

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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