WINTHROP 1 WSW, WA

Average of Minimum Temperature (Degrees Fahrenheit)

(459376)

File last updated on April 18, 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
1906	-----	z	-----	z	21.74		-----	z	41.97		43.62	n	57.97	a	49.60	a	42.77		-----	z	24.93		-----	z	39.83	f
1907	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	47.31	a	-----	z	-----	z	-----	z	47.31	k
1908	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z
1909	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	24.12	n	-0.76	j	-----	z
1910	7.43	a	1.14		23.26		25.17	x	-----	z	-----	z	-----	z	43.56	v	-----	z	31.83	y	11.36	p	15.60	a	11.86	h
1911	1.48	b	1.70	a	20.84		28.90		37.06		-----	z	-----	z	-----	z	39.64	e	29.66	b	16.37		10.03		20.63	c
1912	7.06		16.90		19.37	a	33.53		40.70	a	48.30		51.23	a	48.41	b	38.40		31.29		28.13		14.61		31.50
1913	3.47	a	5.43		21.42		32.46	b	39.52		46.69	a	48.27	a	49.55		39.20		30.13		25.90		17.90	a	29.99
1914	17.23		12.29		24.26		36.47		39.81		45.03		49.84		49.03		40.60		36.68		28.90		8.32		32.37
1915	7.55		21.46		27.87		35.83		40.52		45.47		50.61		52.13		40.27		34.48		17.60		11.97		32.15
1916	-4.58		11.45		21.19		31.47		35.38	b	44.93		46.94		47.52		39.07		29.13		16.43		2.71		26.80
1917	2.52		11.07		14.39		29.43		39.06		41.30		50.07	a	58.55	b	39.17		31.81		20.50		8.23		28.84
1918	16.77		10.86		-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	42.07		36.48		24.97		18.81		24.99	f
1919	12.39		8.50		18.87		31.43		32.89	c	38.50		44.89	v	46.26	d	39.60		20.38	w	19.73		4.00	d	25.22	b
1920	12.08	r	18.48	f	24.32		-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	35.79	p	27.81	d	26.07	j
1921	-----	z	-----	z	-----	z	-----	z	39.32		46.33		49.19		50.03		37.50		33.84		22.10		11.19		36.19	d
1922	-0.90		2.50		18.03	a	31.77		36.71		48.17		53.00		50.61		42.57		35.29		24.07		8.06		29.16
1923	11.32		8.71		20.61		33.17	a	38.90		46.70		51.77		50.94		41.70		33.00		26.10		13.58		31.38
1924	4.29		22.28		27.03		29.57		40.81		47.23		53.10		51.39		41.93		33.68		21.77		6.70	a	31.65
1925	9.42		23.14		28.00		34.27		40.55		46.13		53.45		48.77		42.57		29.61		25.73		26.71		34.03
1926	15.30	a	25.86		28.26		34.30		37.45		47.27		54.23		50.32		37.73		34.58		29.97		15.13		34.20
1927	10.68		15.39		24.10		30.90		37.81		47.23		51.77		49.77		41.90		31.74		24.30		6.61		31.02
1928	17.10		18.90		25.39		29.87		39.06		46.43		52.77		48.55		38.30		29.71		23.47		9.40	a	31.58
1929	-2.03		-0.56	a	26.29		28.53		37.03		45.53		46.32		46.94		37.27		29.43	a	16.17		13.06		27.00
1930	-10.87		14.64		23.58		32.67		36.45		42.50		52.32		47.16		40.83		31.13		20.40		15.55	b	28.86
1931	18.63	a	13.37	a	25.68		30.47		38.81		47.43		50.74		48.94		43.83		32.90		20.47		15.97		32.27
1932	6.94		10.86		23.97		35.37		39.23		48.10		48.77		49.94		39.33		33.00		27.27		10.71		31.12
1933	11.87		6.04		24.35		31.30		36.87		42.43		48.74		47.87		39.60		32.19		28.20		21.77		30.94
1934	14.45		18.00		25.61		35.37		39.00		47.03		49.00		49.42		40.63		35.45		30.27		16.13		33.36
1935	11.77		14.57		21.13	a	28.17		36.65		44.41	a	49.48		45.68		41.50		30.39		18.93		16.19		29.91
1936	9.93	a	-7.34		20.45		32.28	a	41.65		46.40		49.52		49.32		39.07		31.48		16.10		14.70	a	28.63
1937	-8.53	a	4.62	b	23.06		28.37		36.10		46.57		53.42		47.06		43.60		34.77		28.80		17.17	a	29.58
1938	-----	z	18.36	q	24.68		31.93		38.61		46.30		53.06		46.39		44.73		34.45		22.83		12.43	a	35.54	b
1939	17.10		10.81	a	23.65		33.29	b	39.39		44.97		51.55		49.16		41.33		33.81		25.00		23.00	a	32.75
1940	14.53	a	19.21		28.29		36.40		40.55		47.63		52.74		48.35		46.10		38.61		21.07		19.17	a	34.39
1941	16.97		19.64		28.32		36.73		40.16		48.13		53.71		49.81		40.97		34.03		27.73		16.87		34.42
1942	11.23	a	18.21		24.61		34.13		39.61		44.80		50.65		50.94		40.90		32.13		21.93	a	13.57	a	31.89
1943	2.06		14.07		18.13		34.37		37.85	d	43.87		51.10		48.61	h	40.47		35.29		27.90		15.45		29.14	a
1944	8.21	b	14.86		22.58		34.30		38.94		47.80		51.06		47.90		42.33		34.23		28.87		11.32		31.87
1945	16.00	d	21.22	a	25.45		30.33	i	39.70	a	45.23		51.60	a	49.32		41.13		33.06		19.83		14.94		32.50	a
1946	12.61		13.07		25.32	f	33.53		40.23		44.13		48.97		48.39		40.93		30.16		17.57	b	13.97	a	31.23	a
1947	6.65		11.96		25.13		33.43	b	40.90		46.77		49.07	b	-----	z	40.50		36.81		25.10		18.07	a	30.40	a
1948	4.39		10.55		16.81		28.28	a	39.53	a	48.69	a	47.50	a	45.87	a	39.20	e	28.86	b	22.63		2.23		27.88
1949	-7.77		7.18		23.97	a	31.83		40.61		43.40		49.13	a	47.26		40.77		28.55		28.38	a	11.29		28.72
1950	-11.71		14.21		24.65		29.93		38.71		46.41	a	50.83	a	48.53	a	39.89	b	34.48		24.67		22.93	a	30.30
1951	11.73	a	11.64		17.19		29.67		39.68		44.83		49.03	a	49.23		41.50		35.50	a	22.47		5.20	a	29.81
1952	5.74		11.72		22.74		33.47		38.81		44.67		48.94		48.94		41.93		32.19		20.27		22.32		30.98
1953	19.97		16.15	a	26.39		32.73		38.03		43.57		47.61		48.52		40.13		31.23		26.27		17.71		32.36
1954	7.13		19.96	a	18.34	b	28.07		37.90	a	40.97	a	46.26		47.06		40.60		28.73	a	30.93		13.71		29.97
1955	11.06		11.71		14.19		28.33		37.10		45.43		49.69	b	45.35		39.53		30.52		13.76	a	5.50	a	27.68
1956	13.00	a	3.31		17.47	a	29.83		40.10		43.83		50.10		48.87		39.21	a	31.71		18.87		14.13		29.20
1957	-2.55		9.00		22.77		33.13		44.65		46.33		47.97		44.42		41.13		33.10		23.30		18.90		30.18
1958	16.90		27.75		25.97		32.67		41.97		50.30		52.68		51.00		39.83		31.13		17.70		16.81		33.73
1959	9.45		11.96		22.06		30.27		36.42		44.30		47.13		44.34	b	39.83		32.13		18.80		15.94		29.39
1960	8.35		15.46	a	20.13		30.90		37.42		42.57		49.65		47.39		35.87		30.77		19.13		8.81		28.87
1961	13.29		23.11		24.68		31.70		40.03		45.60		50.32		49.32		37.07		27.26		15.80		11.19		30.78
1962	5.77	a	21.68		21.29		32.10		37.94		41.73		46.35		46.39		37.20		30.81		27.70		19.42		30.70
1963	8.06		19.64		25.58		32.89	b	36.65		45.97		48.90		48.19		42.77		34.26		24.93		15.10		31.91
1964	13.23		11.32	a	21.23		30.23		36.48		44.47		-----	z	44.42		36.83		28.35		23.47		7.94		27.09	a
1965	15.29		11.68		17.35		31.60		33.77		43.47		46.71		48.45		33.07		27.32		25.43		13.84		29.00
1966	6.23		17.68		18.55		26.70		36.61		40.43		44.32		45.90		42.37		29.10		26.70		21.29		29.66
1967	16.77		19.93		24.42		27.77		35.48		44.83		45.65		44.42		40.63		32.13		21.97		9.77		30.31
1968	13.39		16.46	e	-----	z	25.97		33.97	b	40.14	b	46.71		43.42		37.27		27.29		23.76	a	9.00	a	28.85	a
1969	-6.37	a	9.61		18.14	c	29.90		37.42		47.73		44.87	a	42.23		37.73	d	26.83	b	20.86	b	16.60	a	27.13
1970	8.10		16.07		-----	z	28.30		36.13		47.23		50.77	a	44.97		36.17		26.84		20.77		9.06		29.49	a
1971	12.35		14.46		17.70	a	29.13		40.00		-----	z	46.89	c	47.47	a	34.19	d	29.21	c	24.59	a	4.29	c	27.30	a
1972	5.03		12.48	d	23.19		27.70		39.58		-----	z	43.35	e	46.90	a	34.28	a	25.74	d	28.69	a	-----	z	28.69	b
1973	7.50	a	16.96		26.19		-----	z	-----	z	-----	z	48.10		47.13		41.60		31.80	a	20.03		18.77		28.68	c
1974	6.10	b	19.14		24.28	b	-----	z	34.87		43.23		47.16		46.71		37.63		28.94		-----	z	18.23		30.63	b
1975	8.13		10.36		20.87		28.73		36.97		43.17		52.26		47.84		38.00		33.74		22.20		16.61		29.91
1976	12.67	a	15.55		20.00		30.77		37.32		40.20		48.16		48.35		40.53		30.35		21.93		15.68	c	30.13
1977	7.33	a	21.79		26.84		30.60		37.29		47.63		49.03		52.16		40.33		29.39		24.00	a	12.40	a	31.57
1978	16.61		22.68		26.39		34.07		37.87		44.87		50.58		48.00		41.83		26.55		18.31	a	3.94		30.97
1979	-2.39		12.86		22.19		27.13		36.90		43.60		49.58		50.32		39.50		32.57	a	19.90	a	21.22	d	29.45
1980	2.39		20.69		24.19		32.63		40.59	b	42.70		45.81		45.16		39.07		28.55		24.97		17.71		30.37
1981	24.03		19.36		26.39		28.20		37.87		40.70		46.58		47.19		38.23		29.32		26.97		10.35		31.27
1982	10.65		13.54		23.10		26.17		35.29		-----	z	47.35		45.94		38.83		30.00		19.13		11.84		27.44	a
1983	20.30	a	22.54		28.77		29.90		36.55		43.97		44.68		48.19		36.00		29.06		28.93		0.87		30.81
1984	11.26		19.24		27.45		29.17		35.52		43.93		47.16		47.84		33.93		27.52		22.13		1.29		28.87
1985	10.84		3.96		19.87		29.00		38.16		42.90		48.16		45.61		37.80		31.71		10.03		7.23		27.11
1986	16.42		15.68		27.39		31.57		39.74		48.23		48.90		51.35		41.67		31.10		26.59	a	17.29		32.99
1987	13.32		22.57		28.13		34.83		40.81		47.37		51.35		48.13		40.73		29.97		27.20		13.32		33.14
1988	8.94		15.14		26.71		34.30		39.45		45.97		49.45		47.13		39.97		33.39		26.03		15.42		31.82
1989	13.06		10.46		24.13		33.17		38.26		48.63		48.61		47.87		38.97		31.45		28.60		22.10		32.11
1990	18.06		11.82		26.42		35.47		40.32		46.23		-----	z	50.87		41.87		30.16		26.03		9.84		30.65	a
1991	11.87		26.57		25.26		31.50		40.52		43.70		49.74		52.26		41.73		28.61		26.27		19.39		33.12
1992	19.94		27.97		29.16		32.93		39.87		51.37		51.94		49.32		39.30		33.57	a	28.00		8.68		34.34
1993	9.06		16.32		24.84		33.30		43.45		46.17		49.13		48.58		39.67		33.19		15.47		18.06		31.44
1994	19.10		18.57		25.52		37.00		41.13		44.73		52.32		-----	z	42.77		32.52		16.77		15.26		31.43	a
1995	14.94		20.00		23.81		32.37		41.35		46.40		52.13		45.00		43.17		31.55		25.60		18.29		32.88
1996	12.48		13.18	a	25.19		33.70		37.58		44.40		49.84		48.39		40.50		31.81		24.03		9.13		30.85
1997	12.45		14.54		25.26		31.90		41.16		45.27		48.87		50.45		44.00		32.58		27.97		17.97		32.70
1998	17.10		28.43		30.26		33.45	a	44.16		47.77		54.77		51.16		43.57		31.48		30.50		15.32		35.66
1999	20.55		20.64		24.39		30.10		36.90		45.47		48.26		52.16		38.13		29.65		33.07		23.61		33.58
2000	15.26		19.86		28.30	a	33.20		40.13		46.73		48.52		48.26		40.87		31.58		22.13		15.39		32.52
2001	19.48		15.86		27.19		31.90		38.87		45.10		51.77		51.42		43.70		31.55		29.20		18.42		33.71
2002	18.07	a	17.89		22.81		32.93		38.39		46.73		51.65		48.68		41.13		27.65		26.69	a	26.39		33.25
2003	20.42		16.75		27.42		35.03		39.45		47.77		52.42		50.55		42.77		36.16		20.77		12.90		33.53
2004	17.55		19.79	a	28.42		33.33		39.84		47.07	a	53.39		54.00	a	40.77		32.61		25.17		21.67	a	34.47
2005	17.06		16.29		28.87		33.80		42.17	a	46.40		49.77		48.94		40.17		36.58		22.96	f	14.23		34.02	a
2006	22.42		14.57		26.16		34.50		38.90		48.43		53.61		48.26		42.00		32.35		23.41	a	14.81		33.29
2007	7.03		22.75		28.06		32.43		38.74		46.20		54.61		48.16		41.67		32.06		22.70		11.20	a	32.14
2008	6.52		16.96	a	25.10		29.83		43.10		45.93		50.87		49.52		38.67		32.39	c	29.30	c	11.00	a	31.60
2009	10.32		16.36		22.55		31.37		38.16		47.17		51.87		51.61		44.10		32.06		26.93		12.48		32.08
2010	24.23	a	26.57		27.81		33.80		37.61		45.70		49.06		48.65		43.30		35.42		22.33		18.84		34.44
2011	15.84		15.32		26.26		29.03		38.10		45.00		47.77		49.29		41.47		33.32		19.37		12.43	a	31.10
2012	11.65		18.76		24.06		32.47		38.26		45.17		51.48		48.97		40.03		33.65		29.57		18.13		32.68
2013	9.48		20.11		26.10		32.60		39.58		46.97		52.61		51.94		45.43		28.55		24.23		11.29		32.41
2014	18.97		16.36		24.81		29.77		37.87		43.20	e	53.29		51.94		41.87		38.74		21.23		18.90		33.08
2015	18.90		25.21		30.32		31.83		40.68		50.77		54.65		50.48		39.47		36.19		21.37		15.90		34.65
2016	18.58		20.90		27.10		36.33		42.61		46.37		51.16		49.16		40.30		36.03		33.77		7.41	b	34.14
2017	9.94		13.86		25.68		33.00		39.94		46.70		52.10		49.94		41.43		29.71		28.30		15.42		32.17
2018	21.87		14.61		24.74		32.86	a	45.23		45.50		51.13		48.87		40.70		31.90		24.97		18.77		33.43
2019	16.77		6.71		19.42		33.83		43.35		47.53		51.35		51.16		45.73		28.61		21.90		20.10		32.21
2020	20.39		17.41		23.97		32.33		41.29		46.93		50.97		51.10		43.40		32.32		23.97		17.61		33.47
2021	17.90		18.57		24.16		31.43		38.03		50.10		56.77		52.29		42.03		32.19		29.20		12.94		33.80
2022	13.48		16.04		28.45		30.17		39.53	a	46.83		51.84		52.65		44.33		34.71		14.33		6.71		31.59
2023	20.42		15.82		23.26		30.83		46.45		49.03		52.94		52.03		44.00		34.52		26.71	b	25.65		35.14
2024	18.61		26.48		26.97		32.78	l	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	24.02	i
Period of Record Statistics
MEAN	11.13		15.45		23.96		31.75		38.98		45.61		50.12		48.74		40.48		31.80		23.65		14.24		31.48
S.D.	7.47		6.39		3.46		2.47		2.35		2.34		2.66		2.42		2.53		2.72		4.46		5.60		2.03
SKEW	-0.89		-0.57		-0.63		-0.14		0.35		-0.44		0.04		0.33		-0.27		0.14		-0.35		-0.12		-0.29
MAX	24.23		28.43		30.32		37.00		46.45		51.37		57.97		58.55		47.31		38.74		33.77		27.81		35.66
MIN	-11.71		-7.34		14.19		25.97		32.89		38.50		43.35		42.23		33.07		25.74		10.03		0.87		26.80
YRS	112		112		111		107		111		106		108		108		114		111		111		113		92