WINTHROP 1 WSW, WA

Total of Snowfall (Inches)

(459376)

File last updated on April 24, 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)	JUL		AUG		SEP		OCT		NOV		DEC		JAN		FEB		MAR		APR		MAY		JUN		ANN
1905-06	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	0.50		-----	z	-----	z	-----	z	0.50	k
1906-07	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	0.00	l
1907-08	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	0.00	l
1908-09	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	0.00	l
1909-10	-----	z	-----	z	-----	z	-----	z	-----	z	23.00		17.00		19.50		-----	z	-----	z	-----	z	-----	z	59.50	i
1910-11	-----	z	-----	z	-----	z	-----	z	28.00		6.00		-----	z	14.10		0.00		0.00		-----	z	-----	z	48.10	g
1911-12	-----	z	-----	z	-----	z	-----	z	-----	z	17.10	t	24.50		-----	z	4.00		-----	z	0.00		-----	z	28.50	i
1912-13	0.00		-----	z	0.00		13.00		4.80		24.50	y	17.80		5.00		0.00		0.00		-----	z	-----	z	40.60	d
1913-14	-----	z	0.00		-----	z	2.00		18.50		12.70		43.00	a	2.80	w	6.00		-----	z	-----	z	-----	z	82.20	f
1914-15	0.00		0.00		-----	z	-----	z	9.00		8.00		24.40		17.70		4.00		-----	z	0.00		-----	z	63.10	d
1915-16	-----	z	0.00		-----	z	0.00		56.30	n	35.40	s	33.20	o	32.60	u	8.10		0.00		0.00		-----	z	8.10	g
1916-17	-----	z	-----	z	0.00		-----	z	15.80		21.50		4.50		17.50		12.00		2.00		0.00		0.00		73.30	c
1917-18	0.00		0.00	a	0.00		-----	z	-----	z	21.50		11.30	y	6.80		-----	z	-----	z	-----	z	-----	z	28.30	g
1918-19	-----	z	-----	z	-----	z	-----	z	1.50		5.40		-----	z	-----	z	-----	z	0.00		0.00		0.00		6.90	g
1919-20	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	0.00		-----	z	-----	z	-----	z	0.00	k
1920-21	-----	z	-----	z	-----	z	-----	z	5.50		17.90	y	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	5.50	k
1921-22	0.00		0.00		0.00		0.00		40.00		17.00		13.00		16.00		16.00		0.00		0.00		0.00		102.00
1922-23	0.00		0.00		0.00		0.00		9.00		30.00		28.50		8.00		2.00		0.00		0.00		0.00		77.50
1923-24	0.00		0.00		-----	z	-----	z	4.00		52.00		16.00		15.00		-----	z	-----	z	-----	z	0.00		87.00	e
1924-25	-----	z	-----	z	-----	z	2.00		22.00		18.00		38.00		13.50		0.00		0.00		-----	z	-----	z	93.50	e
1925-26	-----	z	-----	z	-----	z	3.00		9.00		9.00		14.00		14.00		-----	z	0.00		-----	z	-----	z	49.00	f
1926-27	-----	z	-----	z	-----	z	-----	z	3.50		17.00		14.50		19.00		3.00		-----	z	-----	z	-----	z	57.00	g
1927-28	-----	z	-----	z	-----	z	-----	z	33.00		7.00		4.50	a	1.00		-----	z	-----	z	-----	z	-----	z	45.50	h
1928-29	-----	z	-----	z	-----	z	-----	z	5.00		27.50		10.00		1.00		-----	z	-----	z	-----	z	-----	z	43.50	h
1929-30	-----	z	-----	z	-----	z	-----	z	-----	z	23.00		5.00		10.00		-----	z	-----	z	-----	z	-----	z	38.00	i
1930-31	0.00		0.00		-----	z	-----	z	5.50		4.00		19.50	b	3.50	b	0.50	g	0.00	n	0.00	b	0.00	c	32.50	d
1931-32	0.00		0.00		0.00	i	0.00	i	8.50	b	42.00	b	8.00	a	1.50	a	11.50	a	0.00		0.00	g	0.00	a	71.50	c
1932-33	0.00		0.00		0.00	d	0.00	h	11.00		20.00		15.50	b	2.00	b	3.00	a	0.00		0.00		0.00		51.50	a
1933-34	0.00		0.00		0.00	i	7.50		2.00		54.00	c	14.00	c	1.00	a	3.00	a	0.00		0.00		0.00		81.50	a
1934-35	0.00	b	0.00		0.00		4.00		11.00		25.00	a	61.00	b	8.00	b	12.50	a	0.00		0.00		0.00	f	121.50	a
1935-36	0.00	f	0.00		0.00		0.00		6.00	b	15.00	b	32.00	b	12.00	c	1.00	a	0.00		0.00		0.00		66.00	a
1936-37	0.00		0.00		0.00		0.00		0.00		13.20		21.20		24.70		10.30		1.00		0.00		0.00		70.40
1937-38	0.00		0.00		0.00		0.00		18.00		10.60	d	-----	z	1.40	q	7.30		0.00		0.00		0.00		35.90	b
1938-39	0.00		0.00		0.00		0.00		4.80		10.90	b	5.60		10.90		4.20		0.00	b	0.00		0.00		36.40
1939-40	0.00		0.00		0.00		3.00		0.00		19.50	a	14.60	a	23.00		2.00		0.00		0.00		0.00		62.10
1940-41	0.00		0.00		0.00		0.00		14.60		21.60		14.70		0.10		0.00		0.00		0.00		0.00		51.00
1941-42	0.00		0.00		0.00		0.00		0.50		33.00		12.30		12.30		0.00		0.00		0.00		0.00		58.10
1942-43	0.00		0.00		0.00		0.00		25.20		43.30		19.00		18.50		2.00		0.00		0.00	c	0.00		108.00
1943-44	0.00		0.00	h	0.00		1.60		0.00	a	3.80		6.60	a	20.90		1.60		0.00		0.00		0.00		34.50	a
1944-45	0.00		0.00		0.00		0.00		6.10		4.90	a	9.60	d	18.20		1.60		3.30	e	0.00		0.00		43.70
1945-46	0.00		0.00		0.00		3.10		29.30		32.20		34.30		18.10		1.00	f	0.00		0.00		0.00		117.00	a
1946-47	0.00		0.00		0.00		1.00		37.30		18.20		15.80		18.50		0.50		0.00	b	0.00		0.00		91.30
1947-48	0.00		-----	z	0.00		0.00		1.50		3.20	d	9.50	a	22.60		2.70		0.00		0.00		0.00	a	39.50	a
1948-49	0.00		0.00		0.00		0.50		28.80		48.60		5.20		39.80		3.40		0.00		0.00		0.00		126.30
1949-50	0.00		0.00		0.00		0.00		2.80		19.50		24.50		14.70	a	7.10	c	0.00		0.00		0.00		68.60
1950-51	0.00	a	0.00		0.00		0.50		30.80		18.60		41.50	a	13.60		25.10		0.00		0.00		0.00		130.10
1951-52	0.00		0.00		0.00		0.00	a	12.80		32.90		46.60		13.20		0.60		0.00		0.00		0.00		106.10
1952-53	0.00		0.00		0.00		0.00		0.00		35.30		46.90		13.10		1.50		0.00		0.00		0.00		96.80
1953-54	0.00		0.00		0.00		0.00		8.10		13.60		55.80		8.80	a	4.00		0.00		0.00		0.00		90.30
1954-55	0.00		0.00		0.00		0.00		1.50		28.40		12.10		14.80		14.20		4.50		0.00		0.00		75.50
1955-56	0.00		0.00		0.00		4.00		38.70		58.20	a	31.80		25.40		5.80	a	0.50		0.00		0.00		164.40
1956-57	0.00		0.00		0.00	a	0.00		11.80		4.30		18.70		9.40	a	8.40		0.00		0.00		0.00		52.60
1957-58	0.00		0.00		0.00		4.10		0.50		34.30		24.90		4.50		0.80		0.00		0.00		0.00		69.10
1958-59	0.00		0.00		0.00		0.00	b	28.80		19.70		37.90		28.00		1.70		0.00		0.00		0.00		116.10
1959-60	0.00		0.00		0.00		1.80		6.50		6.60		12.00		21.80		7.50		0.00		0.00		0.00		56.20
1960-61	0.00		0.00		0.00		0.00		19.90		7.60		16.30		16.80		13.30		0.00		0.00		0.00		73.90
1961-62	0.00		0.00		0.00		1.20		16.00		33.20		3.60		4.20		6.60		3.60		0.00		0.00		68.40
1962-63	0.00		0.00		0.00		0.00		8.90		14.60		0.30		4.00	a	0.00		0.00		0.00		0.00		27.80
1963-64	0.00		0.00		0.00		0.00		7.90		20.00	a	47.10	a	1.00	a	2.40		0.00		0.00		0.00		78.40
1964-65	-----	z	0.00		0.00		0.00		13.70		37.70		24.80		3.30		0.00		0.00		0.00		0.00		79.50	a
1965-66	0.00		0.00		0.00		0.00		14.00		31.30		41.00		4.00		11.00		0.00		0.00		0.00		101.30
1966-67	0.00		0.00		0.00		0.00		7.10		10.60		16.50		2.50	a	4.00		0.00		0.00		0.00		40.70
1967-68	0.00		0.00		0.00		0.00		0.50		20.30	a	23.00		3.00		-----	z	0.00		0.00		0.00	b	46.80	a
1968-69	0.00		0.00		0.00		0.00		3.50		62.20		38.50		26.30		2.00		0.00		0.00		0.00		132.50
1969-70	0.00		0.00		0.00		0.00		0.00		34.00		44.10		5.00		-----	z	0.00		0.00		0.00		83.10	a
1970-71	0.00		0.00		0.00		0.00		19.00		59.00		33.50		7.50		18.30		0.00		0.00		-----	z	137.30	a
1971-72	0.00		0.00		0.00		3.00		17.60		62.80	a	31.30		6.50	b	17.50		2.00		0.00		-----	z	140.70	a
1972-73	0.00		0.00		0.00		0.50		2.10		-----	z	14.70		5.00		0.00		-----	z	-----	z	-----	z	22.30	d
1973-74	0.00		0.00		0.00		0.00		16.70		45.60	a	17.00		10.00		2.50		-----	z	0.00		0.00		91.80	a
1974-75	0.00		0.00		0.00		0.00		-----	z	20.30	a	35.70		21.20		-----	z	0.00		0.00		0.00		77.20	b
1975-76	0.00		0.00		0.00		0.00		11.30		12.90	b	20.10	a	9.70		0.00		0.00		0.00		0.00		54.00
1976-77	0.00		0.00		0.00		0.00		0.00		-----	z	0.80		3.50		0.00		0.00		0.00		0.00		4.30	a
1977-78	0.00		0.00		0.00		0.00		14.00		30.00	a	13.40		5.30		1.50		0.00		0.00		0.00		64.20
1978-79	0.00		0.00		0.00		0.00		3.10		7.10		6.10		18.00		0.00		0.00		0.00		0.00		34.30
1979-80	0.00		0.00		0.00		0.00		0.00	b	27.30		19.60		11.10		0.00		0.00		0.00		0.00		58.00
1980-81	0.00		0.00		0.00		0.00		6.50		24.50		3.00		2.00		0.00		0.00		0.00		0.00		36.00
1981-82	0.00		0.00		0.00		0.00		0.90		33.50		19.80	a	10.30		3.00		0.00		0.00		-----	z	67.50	a
1982-83	0.00		0.00		0.00		0.00		11.60		25.70	a	29.50		5.00		0.00		0.00		0.00		0.00		71.80
1983-84	0.00		0.00		0.00		0.00		15.00	a	19.10	b	6.90		5.00		0.00		0.00		0.00		0.00		46.00
1984-85	0.00		0.00		0.00		0.00		12.20	a	11.00		3.80		12.00	b	6.00		0.00		0.00		0.00		45.00
1985-86	0.00		0.00		0.00		3.80		4.60	a	8.50	a	17.30	a	16.30		0.00		0.00		0.00		0.00		50.50
1986-87	0.00		0.00		0.00		0.00		5.50		14.50	a	24.00		14.00		3.50		0.00		0.00		0.00		61.50
1987-88	0.00		0.00		0.00		0.00		0.00		32.30		12.20		2.00		1.50		0.00		0.00		0.00		48.00
1988-89	0.00		0.00		0.00		0.00		10.00		12.80		3.30		17.70		9.40		0.00		0.00		0.00		53.20
1989-90	0.00		0.00		0.00		0.00		2.00		1.00		21.50		4.00	a	0.00		0.00		0.00		0.00		28.50
1990-91	-----	z	0.00		0.00		0.00		3.50		17.60		8.00		0.00		7.20		0.00		0.00		0.00		36.30	a
1991-92	0.00		0.00		0.00		5.10		11.30		13.00		10.00	a	2.00		0.00		0.00		0.00		0.00		41.40
1992-93	0.00		0.00		0.00		0.00		5.70		17.50	a	14.50		6.00		0.50		0.00		0.00		0.00		44.20
1993-94	0.00		0.00		0.00		0.00		1.60	a	23.60		9.30		10.20		0.50		0.00	a	0.00		0.00		45.20
1994-95	0.00		0.00		0.00		5.40		21.00		16.90		25.40		7.30		5.60		0.00		0.00		0.00		81.60
1995-96	0.00		0.00		0.00		0.00		29.00		23.80	a	19.30	d	13.10		0.30		0.00		0.00		0.00		85.50
1996-97	0.00		0.00		0.00	b	6.00		19.80	b	76.80		16.20		6.90		10.80		0.00	a	0.00		0.00		136.50
1997-98	0.00		0.00		0.00		0.10		4.50		9.60		37.00		0.30		5.00		0.00		0.00		0.00		56.50
1998-99	0.00		0.00		0.00		0.00		6.50		21.10		15.70		20.20		10.20		0.00		0.00	b	0.00		73.70
1999-00	0.00		0.00		0.00		3.00		0.30		12.30		21.20		19.00		0.00	a	0.00		0.00		0.00		55.80
2000-01	0.00		0.00		0.00		0.00		7.80		13.60		5.50		8.80		0.20		0.00		0.00	a	0.00		35.90
2001-02	0.00		0.00		0.00		0.00		9.10		26.70		13.20		10.80		6.80		0.00		0.00		0.00		66.60
2002-03	0.00		0.00		0.00		0.00		0.00		24.10		21.90		0.00		1.80	a	0.00	b	0.00		0.00		47.80
2003-04	0.00		0.00		0.00		0.00		13.30		24.50	a	5.90		6.20		3.50		0.00		0.00		0.00		53.40
2004-05	0.00		0.00		0.00		0.00		3.70		18.90		18.60	b	0.00		0.00		0.00		0.00		0.00	a	41.20
2005-06	0.00		0.00		0.00		0.00		6.70	f	11.20	a	30.40	a	9.10		1.00		0.00		0.00		0.00		51.70	a
2006-07	0.00		0.00		0.00		0.00		16.20	b	39.60	a	12.60	b	7.80	a	0.00		0.00		0.00		0.00		76.20
2007-08	0.00		0.00		0.00		0.00		5.00		39.00		26.30		7.30		6.00		0.00		0.00		0.00		83.60
2008-09	0.00		0.00		0.00		0.00		0.50		22.30	a	13.60		4.70		2.70		0.70		0.00		0.00		44.50
2009-10	0.00		0.00		0.00		2.50		0.40		7.20		20.30	a	3.30		1.50		0.90		0.00		0.00		36.10
2010-11	0.00		0.00		0.00		0.00		10.60		35.20		11.20		8.60		16.60	i	-----	z	-----	z	-----	z	65.60	d
2011-12	-----	z	-----	z	-----	z	-----	z	14.80	r	6.00		35.50	n	8.80	p	8.10	x	-----	z	-----	z	-----	z	6.00	k
2012-13	-----	z	-----	z	-----	z	-----	z	8.90	w	35.80	k	10.60	s	-----	z	-----	z	-----	z	-----	z	-----	z	0.00	l
2013-14	0.00		-----	z	-----	z	0.00		0.50		4.70		6.30		41.60		-----	z	-----	z	-----	z	-----	z	53.10	f
2014-15	0.00		-----	z	0.00		-----	z	19.90	x	8.60	w	9.20	q	3.90	x	-----	z	-----	z	-----	z	-----	z	0.00	j
2015-16	-----	z	-----	z	-----	z	-----	z	10.50	x	35.10	h	31.30		2.40	y	-----	z	0.00		0.00		0.00		31.30	h
2016-17	-----	z	0.00		-----	z	-----	z	-----	z	22.60	m	17.20	s	17.20	o	8.70	y	-----	z	-----	z	-----	z	0.00	k
2017-18	-----	z	-----	z	-----	z	-----	z	12.10	s	18.40	o	24.20	n	9.00	w	7.90	v	-----	z	-----	z	-----	z	0.00	l
2018-19	-----	z	-----	z	-----	z	-----	z	2.60	y	16.30	o	21.60	t	11.40	p	4.00	y	-----	z	-----	z	-----	z	0.00	l
2019-20	-----	z	-----	z	-----	z	-----	z	-----	z	10.30	u	27.40	h	2.90	w	-----	z	-----	z	-----	z	-----	z	0.00	l
2020-21	-----	z	-----	z	-----	z	-----	z	17.00	r	18.60	o	29.30	l	9.40	o	-----	z	-----	z	-----	z	-----	z	0.00	l
2021-22	-----	z	-----	z	0.00		0.00		1.40		28.90		33.40		7.60		0.10		0.20		0.00		0.00		71.60	b
2022-23	0.00		0.00		0.00		0.00		38.10	a	38.50		12.40		3.10		4.20		0.00		0.00		0.00		96.30
2023-24	0.00		0.00		0.00		0.00		0.30		12.60		13.60		2.90		0.00		-----	z	-----	z	-----	z	29.40	c
Period of Record Statistics
MEAN	0.00		0.00		0.00		0.92		10.35		22.98		19.88		10.75		4.06		0.21		0.00		0.00		69.32
S.D.	0.00		0.00		0.00		2.06		10.22		15.07		12.80		8.30		5.00		0.76		0.00		0.00		29.87
SKEW	0.00		0.00		0.00		3.22		1.21		1.12		0.91		1.12		1.71		4.15		0.00		0.00		1.03
MAX	0.00		0.00		0.00		13.00		40.00		76.80		61.00		41.60		25.10		4.50		0.00		0.00		164.40
MIN	0.00		0.00		0.00		0.00		0.00		1.00		0.30		0.00		0.00		0.00		0.00		0.00		27.80
YRS	88		89		87		89		98		100		100		99		91		89		88		83		61