SEATTLE NAS, WA

Total of Precipitation (Inches)

(457468)

File last updated on April 25, 2024
a = 1 day missing, b = 2 days missing, c = 3 days, ..etc..,
z = 26 or more days missing, A = Accumulations present
Long-term means based on columns; thus, the monthly row may not
sum (or average) to the long-term annual value.
MAXIMUM ALLOWABLE NUMBER OF MISSING DAYS : 5
Individual Months not used for annual or monthly statistics if more than 5 days are missing.
Individual Years not used for annual statistics if any month in that year has more than 5 days missing.

YEAR(S)	JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC		ANN
1929	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	1.83		0.29		1.75	n	1.16	r	5.15	g	2.12	j
1930	2.11	r	3.13	i	1.98	p	1.95	i	2.86		1.78	o	0.00		0.00	x	1.22	q	3.62	o	1.62	s	2.20		5.06	i
1931	6.89	g	3.64	n	3.84	i	2.14	p	1.29	v	3.22	k	0.15		0.13		1.92		2.57	o	2.31	j	8.99		11.19	h
1932	4.27	f	3.68		-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	3.68	k
1933	5.76		1.86		5.12		1.15		2.92		2.03		1.06		2.28		3.95	m	3.87	l	3.43	o	14.87	f	22.18	d
1934	5.69		1.46		3.39	s	1.27		2.73		0.32		0.78		0.60		2.49		3.99		6.28		5.26		30.87	a
1935	9.77		2.19		4.18		1.27		1.22		3.97	o	0.73	w	0.60		3.33		3.48		1.17		5.35		32.56	b
1936	5.48		4.53		3.44		1.45		3.87		1.92	p	0.85		0.47		1.45		-----	z	1.48		6.78	f	23.02	c
1937	2.21	a	6.01		1.31	n	4.54		1.57		2.54		0.27		1.23		2.28		2.66		-----	z	6.90		30.21	b
1938	2.82	j	2.11	m	2.69	j	1.82	r	2.10	t	0.47	w	-----	z	0.69	s	0.69		3.15	q	3.01		3.19	i	3.70	j
1939	5.13		3.34	i	1.60	l	0.10	n	0.98	q	1.54	j	0.47		0.44	w	1.57	r	2.43		2.81		9.52		20.36	g
1940	2.69	j	5.79		4.06		4.38		2.00	o	0.24		0.95		0.12	v	1.08	q	4.03		2.40	n	3.82		23.27	e
1941	4.40		1.17		1.43		1.83		2.61		0.63		0.35		2.01		3.11		2.28		3.96	k	5.22		25.04	a
1942	2.73		1.97		2.27		1.48	k	2.17		2.20		0.45		0.58		0.14		1.63		7.52		4.33	c	25.99	a
1943	1.38		1.69		3.54	m	2.11		1.55		0.93		0.34		1.16		0.04		4.62		1.70		0.90		16.42	a
1944	2.95		2.15		0.89		1.78		1.43	o	0.74		0.47		0.69		0.76	a	1.61		3.90		0.95		16.89	a
1945	2.19		4.78		4.26		2.41		2.11		0.64		0.11		0.65		1.68		1.43		6.28		4.82		31.36
1946	3.57		4.85		2.56		1.64		0.48		2.42		0.56		0.16		1.57		3.25		5.46		5.30		31.82
1947	3.29		3.25		2.10		1.89		0.29		2.35		0.45		0.23		1.07		7.03		4.21		5.54		31.70
1948	3.74		5.48		3.09		2.68		4.32		2.53		2.07		1.58		3.25		1.78		4.02		3.62		38.16
1949	1.32		7.53		2.89		1.25		1.14		0.24		0.34		0.94		1.43		4.31		5.39		5.00		31.78
1950	6.22		6.26		7.38		2.64		0.82		0.51		0.87		1.41		1.88		9.29		8.02		6.97		52.27
1951	6.38		7.09		2.27		0.86		1.42		0.53		0.14		0.70		2.15		5.14		5.09		4.06		35.83
1952	4.33		2.50		2.61		1.56		0.31		2.91		0.36		0.52		0.31		0.90		1.66		3.98		21.95
1953	10.69		1.86		4.75		1.59		2.52		2.18		0.72		1.03		2.25		4.15		6.22		3.26		41.22
1954	7.04		4.76		2.12		2.71		1.76		1.81		1.48		1.58		1.84		0.51		6.43		3.95		35.99
1955	2.24		2.30		1.69		1.92		1.96		1.75		1.63		0.09		1.13		4.79		6.37		7.55		33.42
1956	7.53		2.07		4.36		1.46		0.66		2.78		0.09		0.94		2.22		4.08		1.62		2.67		30.48
1957	2.74		4.41		4.43		2.33		1.42		1.68		0.80		1.10		0.59		4.03		2.52		4.48		30.53
1958	6.99		5.61		2.58		4.93		0.89		0.83		0.00		0.42		2.27		3.11		6.25		5.73		39.61
1959	8.78		3.27		3.54		2.20		3.07		2.05		0.56		0.29		3.65		2.72		5.70		5.78		41.61
1960	5.19		3.42		3.51		2.37		3.52		1.07		0.00		2.78		1.30		3.83		8.17		3.44		38.60
1961	7.05		5.84		3.69		2.27		2.82		0.41		0.94		0.82		0.84		4.15		4.00		5.10		37.93
1962	2.55		2.41		5.08		1.66		1.96		0.97		0.62		2.25		2.31		2.97		6.45		3.72		32.95
1963	1.81		4.39		2.67		3.11		0.79		2.71		1.66		0.85		0.88		3.92		7.93		5.27		35.99
1964	7.58		1.85		3.27		2.35		1.47		3.59		0.96		2.02		2.18		1.05		7.51		4.88		38.71
1965	6.09		5.10		0.75		3.83		2.05		0.42		0.69		2.04		0.84		2.23		5.32		6.70		36.06
1966	5.78		3.70		4.24		2.97		1.43		0.78		1.68		0.38		2.14		3.08		6.84		7.90		40.92
1967	8.19		2.82		3.33		3.33		0.96		1.52		0.20		0.00		1.38		5.40		1.86		7.22		36.21
1968	7.23		5.23		5.95		3.07		2.04		3.31		0.56		4.00		2.31		4.78		5.69		8.42		52.59
1969	7.02		3.40		1.97		3.17		2.60		1.38		0.53		0.09		4.35		1.16		2.98		5.99		34.64
1970	5.33		1.71		2.36		3.17		1.12		-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	13.69	g
Period of Record Statistics
MEAN	5.18		3.74		3.30		2.38		1.87		1.55		0.65		1.07		1.73		3.41		4.84		5.13		36.49
S.D.	2.43		1.75		1.44		1.00		1.01		0.98		0.52		0.88		1.02		1.80		2.16		2.01		6.47
SKEW	0.20		0.36		0.59		0.82		0.47		0.31		1.00		1.25		0.43		0.95		-0.24		0.09		0.70
MAX	10.69		7.53		7.38		4.93		4.32		3.59		2.07		4.00		4.35		9.29		8.17		9.52		52.59
MIN	1.32		1.17		0.75		0.86		0.29		0.24		0.00		0.00		0.04		0.51		1.17		0.90		21.95
YRS	36		37		33		35		35		33		37		36		36		34		33		36		25