SEATTLE UNIV OF WASHINGT, WA

Average of Minimum Temperature (Degrees Fahrenheit)

(457478)

File last updated on April 19, 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
1909	27.18	c	36.93		36.19		40.28	a	45.36	c	50.27		52.48		52.30	a	52.00		46.81		40.83		31.48		42.68
1910	33.10		32.14		40.45		40.96	c	48.00		49.97		52.84		51.45		50.39	g	45.45		38.63		38.74		42.89	a
1911	33.71		34.50	b	37.84		38.37		45.39		48.83		54.58		51.74		50.80		44.53	n	40.57		37.61		43.09	a
1912	37.14	b	38.66		36.68		43.90		49.10		51.76	a	57.45		54.45		52.20		46.39		43.53		39.74		45.92
1913	35.10		36.43		37.90		43.30		48.23		53.83		55.74		56.71		53.43		47.23		43.27		36.52	f	46.47	a
1914	42.66	b	37.36		38.04	e	39.90	a	47.31	b	49.73	d	-----	z	53.84		51.03		49.58		47.07	a	-----	z	45.65	b
1915	32.65	h	38.75		40.71		43.67		46.88	f	52.40		54.52		54.87		50.20		46.16		37.07		39.26		45.76	b
1916	26.39		34.62		37.13		40.07		42.48		50.33		52.81		53.55		48.63		41.10		37.03		34.16		41.53
1917	33.58		35.68		35.29		40.10		45.29		48.67		52.29		52.10		51.20		45.58		42.43		37.55		43.31
1918	36.68		31.00		34.65		39.10		-----	z	50.40		53.87		55.00		51.27		47.90	a	40.37		36.10		43.30	a
1919	36.97	a	37.61		39.94		44.30		46.71		-----	z	-----	z	-----	z	51.76	a	43.07	d	37.07		28.71		40.68	c
1920	28.60	a	23.00		28.77	a	28.77		34.94		43.26	g	49.87		48.23		46.50		-----	z	38.30		41.16		36.81	b
1921	37.92	g	37.88	b	38.32		39.97		44.90		52.60		51.13		53.26		48.90		45.42		41.27		34.06		44.34	a
1922	30.87		32.39		34.77		39.33		44.97		51.43		52.65		54.10		51.57		47.77		37.07		33.16		42.51
1923	34.66	b	30.07		36.03	a	42.43		45.90		51.50		54.29		54.77	a	52.21	b	44.13	a	42.00		37.32		43.78
1924	35.10	a	40.56	b	36.84		40.17	a	47.26		51.10	a	52.72	b	53.80	a	50.37		46.32		38.53		31.26		43.67
1925	37.35		39.68		38.03		43.27		47.97		50.77		53.87		53.94		51.50		43.65		39.17		40.45		44.97
1926	35.90		40.46		40.29		45.30		48.77		52.80		54.87		54.68		48.87		47.32		42.76	a	36.30	a	45.69
1927	35.94		35.79		37.23		40.33		45.45		52.34	a	54.61		55.84		52.20		46.71		41.93		32.13		44.21
1928	36.32		35.86		40.39		41.77		47.94		51.73		55.71		53.23		50.33		47.43	a	41.57		35.43	a	44.81
1929	28.75	c	28.07	a	37.97	a	39.32	b	45.84		50.80		53.22	d	54.63	a	50.68	b	46.23	i	37.69	a	38.70	d	42.33	a
1930	24.72	b	37.37	a	38.33	a	44.14	a	44.07	a	50.13		52.34	b	55.23		51.32	b	43.28	f	37.17	g	36.90	b	43.46	b
1931	40.32		37.54		40.16		-----	z	-----	z	51.83	a	54.55		53.97		53.20		45.84		38.40		37.03		45.28	b
1932	34.20	a	35.21		40.77		43.24	a	46.23		51.07		52.52		55.29		49.70		47.90		43.67		33.55		44.44
1933	35.81		32.46		38.32		39.70		45.16		50.03		52.10	a	56.16		50.03		46.16		42.33		39.65		43.99
1934	40.13		39.43		42.84		46.30		49.52		51.33		53.94		55.71		51.07		47.29		44.77		38.77		46.76
1935	35.35		38.14		36.43	a	39.33		45.13		51.87		54.10		54.13		52.47		44.55		37.32	b	38.48		43.94
1936	38.61		29.28		36.87		44.14	a	49.26		54.33		55.19		56.00		50.23		48.74		38.73		39.13		45.04
1937	25.52		34.79		40.33	a	41.97		46.23		53.27		54.68		54.83	a	52.77		48.19		42.77		39.94		44.61
1938	36.90		36.46		39.32		43.57		46.81		51.73		54.90		52.52		53.07		46.39		38.20		37.74		44.80
1939	39.45		34.11		37.94		42.90		46.39		49.97		54.00		54.87		50.57		46.00		43.10		41.13		45.03
1940	36.90		38.83		41.32		44.33		47.65		51.70		54.81		54.77		54.40		49.06		37.30		38.84		45.83
1941	37.10		37.64		40.84		43.97		47.55		52.10	a	57.52		55.10		50.90		42.97		43.00	a	36.97		45.47
1942	34.42		35.14		37.48		42.43		47.50	a	50.77		58.48		57.16		51.87		47.30	a	38.57		38.73	a	44.99
1943	28.97		35.86		36.29		43.33		45.35		50.33		53.59	d	53.36	c	52.20		47.32		40.63		35.38	b	43.55
1944	35.29		35.86		36.06		42.03		45.68		50.57		54.69	e	55.21	b	53.40		48.42		39.23		33.70	a	44.18
1945	36.58		37.04	b	36.82	c	40.23		48.53	a	50.31	a	54.50	a	53.81		49.30		45.83	a	39.47		35.70	a	44.01
1946	37.06		36.79		37.41	b	41.60		47.57	a	51.29	b	55.96	c	-----	z	50.20	j	42.79	b	35.71	i	35.39		42.87	c
1947	31.63	a	-----	z	39.89	c	43.26	c	48.73	a	52.54	b	55.71		53.83	g	-----	z	-----	z	39.97		39.00		43.84	d
1948	34.13		35.34		36.42		39.70		46.57	a	53.93		53.97	a	55.39		49.77		44.23		39.70		33.42		43.55
1949	26.39		32.07		38.52		42.53		47.48		49.83		52.03		54.19		51.00		42.19		43.90		35.93	a	43.01
1950	21.61		34.46		37.26		38.77		42.23		51.17		53.45		53.77		49.90		45.26		39.62	a	41.20	a	42.39
1951	33.32		35.50		34.39		39.55	a	45.61		50.97		54.06		52.87		51.43		45.71		39.60		33.55		43.05
1952	33.45		36.38		37.10		39.63		45.35		48.67	f	53.20	a	54.90		50.70		47.48		37.10		37.30	a	42.96	a
1953	41.26		38.14		39.87		40.77		46.74		49.83		53.48	b	53.87		51.10		46.35		42.80		37.00		45.10
1954	31.71		35.36		36.10	a	42.00		46.46	e	50.57		53.23		54.58		53.67		45.19		47.00		39.00	a	44.57
1955	36.00	a	33.92	c	33.90		37.93		43.55		48.37		52.39		51.68		50.10		45.84		34.38	a	34.13	a	41.85
1956	34.30	a	31.62		35.68		40.20		47.35		49.90		55.71		56.19		53.03		46.22	d	39.67		38.00		43.99
1957	29.74		33.61		38.90		43.23		50.77		52.62	f	-----	z	-----	z	52.18	h	45.76	f	40.60		40.19		39.58	e
1958	-----	z	43.21		37.77	a	42.73		50.90	a	56.14	a	58.93	a	57.07	b	53.16	e	46.79	c	39.41	h	-----	z	49.63	c
1959	37.03	a	37.21	d	39.73	a	43.43		46.23		52.23		56.81	d	54.70	a	51.38	a	47.16		38.80		37.47	a	45.18
1960	35.83	a	37.59		38.58		43.20		47.13		51.60		55.97		55.45		51.27		48.74	d	40.13		35.94	o	45.95	a
1961	38.04	g	39.89		39.00	d	-----	z	46.69	r	52.24	i	57.06	n	57.00	j	49.47	k	44.18	c	38.12	e	38.07	q	40.30	h
1962	34.37	d	37.46		34.10	k	43.64	b	46.13		49.00	i	52.12	f	54.24	j	52.57	i	48.31	b	43.78	c	40.77	a	42.07	e
1963	31.94		41.75		39.00	c	43.28	a	47.84		51.41	a	53.52	b	55.23		54.34	a	47.58	g	41.67		38.46	c	45.31	a
1964	-----	z	-----	z	38.87	a	40.37		45.16		51.07		-----	z	-----	z	50.83		46.32		36.24	i	32.77		43.63	e
1965	36.10		38.43		37.45		43.27		45.58		52.20		56.77	a	57.74		50.83		48.71		44.57		36.42		45.67
1966	36.90		36.61		38.40	a	43.00		46.74		52.70		55.39		55.87		54.77		46.39		41.27		42.13		45.85
1967	38.74		37.86		37.13		39.67		48.19		55.00		56.42		58.26		54.87		48.00		41.00		36.03		45.93
1968	34.84		37.69		41.71		41.20		47.94		52.47		56.55		56.90		52.24	a	45.60	a	41.17		32.39		45.06
1969	28.39		35.07		37.52		42.33		49.16		56.97		54.77		54.42		53.03		44.68		40.70		39.35		44.70
1970	35.84		38.43		37.57	a	40.23		45.87		53.70		54.84		54.77		49.52	c	44.10		40.00		34.94		44.15
1971	35.65		36.50		35.71		41.23		47.19		50.37		55.65		58.68		50.73		44.71		41.93		33.42		44.31
1972	31.10		35.66		40.71		39.80		48.87		52.07		55.61		56.45		49.57		43.35		41.03		33.74		44.00
1973	33.65		37.25		40.32		42.23		48.00		52.23		55.13		53.45		53.17		47.10		38.90		40.10		45.13
1974	33.71		38.04		38.35		42.00	a	45.06		51.63		55.10		56.48		54.03		45.39		41.97		38.74		45.04
1975	35.90		35.25		36.52		39.03		47.16		51.73		56.13		54.84		52.67		47.55		40.40		37.19		44.53
1976	38.45		36.28		36.19		42.37		47.77		50.23		55.39		55.87		53.67		46.19		41.37		38.42		45.18
1977	33.13		39.57		38.29		44.07		46.55		52.80		54.77		58.87		51.23		45.16		37.50		37.39		44.94
1978	38.35		41.11		40.26		42.80		46.48		54.55	a	56.00		56.35		53.53		47.94		35.53		35.97	a	45.74
1979	30.62	j	29.67	j	40.74		42.54	d	50.19		52.97		-----	z	57.06	m	55.28	a	47.71		39.47		40.23		46.14	d
1980	30.87	a	38.66		39.35		44.03		47.93	a	51.63	c	55.65		54.71		52.70		47.84		42.90		40.23		45.54
1981	38.43	a	36.75	d	41.29		41.68	b	47.84		51.97		55.30	d	58.32		52.37		43.90		40.90		36.65		45.45
1982	33.35		36.37	a	36.68		39.23		46.03	a	53.80		54.07	a	55.84		52.33		46.21	b	37.22	c	34.13		43.77
1983	37.61		40.54		40.35		42.48	a	49.81		53.03		55.77		-----	z	-----	z	-----	z	-----	z	-----	z	45.66	e
Period of Record Statistics
MEAN	34.31		36.24		38.06		41.58		46.72		51.67		54.55		54.82		51.62		46.17		40.43		36.90		44.46
S.D.	4.09		3.25		2.21		2.40		2.23		1.63		1.67		1.83		1.68		1.78		2.53		2.85		1.12
SKEW	-0.82		-1.18		-0.86		-1.99		-2.02		0.76		0.01		-0.43		-0.14		-0.53		0.24		-0.48		-0.59
MAX	42.66		43.21		42.84		46.30		50.90		56.97		58.93		58.87		55.28		49.58		47.07		42.13		46.76
MIN	21.61		23.00		28.77		28.77		34.94		48.37		49.87		48.23		46.50		41.10		34.38		28.71		41.53
YRS	69		72		74		73		71		69		68		66		68		67		70		69		51