GRAYS RIVER HATCHERY, WA

Average of Minimum Temperature (Degrees Fahrenheit)

(453333)

File last updated on April 23, 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
1962	-----	z	-----	z	36.13	p	40.77		41.77		44.97		49.06		51.74		49.90		44.90		41.53		36.83	a	44.61	c
1963	29.39		40.61		36.16		40.33		42.65		47.75	b	49.84		52.10		50.80		46.45		40.43		37.71		42.85
1964	36.26		32.97		35.90		36.63		40.32		46.57		51.29		49.16		46.80		41.71		35.27		32.29		40.43
1965	33.35		35.93	a	32.42		39.10		41.19		45.37		51.07	a	51.90		44.83		44.19		41.73		34.39		41.29
1966	34.26		33.29		34.83	a	39.43		40.06		45.47		50.00		47.29		47.43		40.07	b	38.64	b	38.97		40.81
1967	37.67	a	33.68		33.77	a	33.97		41.48		48.66	a	48.23		48.81		46.59	a	42.58		36.70		32.26		40.36
1968	32.30	a	35.24		37.00		34.97	a	42.45		44.10		49.84		48.47	a	45.33		39.27	a	37.80		31.90		39.89
1969	25.74		29.04		30.16		35.60		41.42		51.13		44.84		45.71		48.90	a	37.70	a	36.87		37.77		38.74
1970	35.97		34.26	a	34.00		38.00		42.87		47.73		50.32		48.79	b	43.03		38.38	b	37.70		32.39		40.29
1971	33.27	a	32.93		33.03		36.17		43.42		46.07		50.10		49.97		42.73		39.00	a	37.76	a	30.77	a	39.60
1972	29.58		33.62		37.26		34.55	a	44.13	a	46.00		47.10		47.61		43.07		36.58		36.97		30.00		38.87
1973	31.16		31.68		34.10		36.33		40.29		46.37		48.19		45.48		44.47		40.68		34.73		38.06		39.30
1974	28.48		34.36		34.81		38.47		39.39		43.83		47.13	a	49.97		44.83		36.74		37.77		36.23		39.33
1975	33.03		31.71		30.31	b	32.13		40.87		44.83	a	48.58		48.19		42.07	a	40.65		34.37		32.16		38.24
1976	32.10		29.48		31.26		34.37		38.90		42.80		46.42		48.39		45.37		37.65		33.57		32.32		37.72
1977	27.03		33.50		32.35		36.37		38.74		46.43		46.74		51.65		43.79	a	37.61		34.60		35.42		38.69
1978	35.52		37.50		35.45		38.37		40.03		48.40		50.94		49.87		46.63		39.06		30.23		28.19		40.02
1979	23.59	b	32.30	a	36.00		39.10		42.87		44.70		50.16		50.16		48.87		43.97	b	34.67		39.10	a	40.46
1980	28.48		36.31		37.48		38.27		42.97		47.07		50.50	a	49.74		47.63		40.13		39.60		37.81		41.33
1981	35.71		34.81	a	35.55		39.57		43.63	a	47.80		50.97		51.03		45.55	a	38.84		36.77		35.45		41.31
1982	31.36	c	33.54		34.32		34.33		40.10		47.57		50.16		49.68		46.79	a	41.48		34.20		33.61		39.76
1983	37.50	a	38.41	a	39.00	a	36.20		45.14	b	47.76	a	51.48	b	49.72	b	43.63	c	35.24	b	38.43		29.96	c	41.04
1984	33.87	a	34.81	b	38.13		34.76	a	39.60	a	44.48	a	44.55	b	44.03		43.50		38.32		36.00	a	29.00	a	38.42
1985	28.35		30.29		31.71		39.03		41.84		44.73		49.71		46.87	a	43.27		39.26		28.31	a	27.48		37.57
1986	36.65		35.07		37.35		35.69	a	41.23		47.33		49.30	a	51.19		44.52	a	41.10	b	38.03		34.97		41.04
1987	33.29		36.25		37.73	a	38.73		44.23		44.73		49.74		49.07	c	46.03		38.32		39.83		31.27	a	40.77
1988	32.93	a	34.21		33.81		37.34	a	42.25	c	44.62	a	48.27	a	47.66	b	44.08	d	44.94		37.47		31.74		39.94
1989	33.62	b	25.18		36.32		38.24	a	42.00	c	48.90		48.07	b	49.67	a	43.60		40.72	b	38.57		35.29		40.01
1990	35.19		29.54		35.58		40.67		41.81		48.36	b	50.37	a	50.90		49.79	b	39.60	a	38.61	b	27.62	b	40.67
1991	31.68		37.61		33.81		37.97		43.97	a	46.07		47.90		50.65		46.28	a	36.87		38.57		37.20	a	40.71
1992	35.94		36.93	a	36.93	b	40.30		42.03		48.93		52.17	a	49.48		43.69	a	41.93	a	35.97		32.94		41.44
1993	27.94		28.93		34.86	c	40.20		44.00	t	48.50	x	52.04	h	50.07	b	45.38	a	42.17	a	29.87		33.13		36.95	c
1994	36.90		32.04		36.21	c	40.25	b	43.00	a	45.62	a	49.55		48.23		47.80		37.37	a	32.34	a	35.07	a	40.36
1995	37.55		36.18		34.65		37.45	a	44.60	a	47.17	a	51.77		47.66	b	51.10		41.29		40.90	a	36.52		42.24
1996	35.16		31.30	b	35.90		41.00	a	41.10		44.47		49.94		48.69	b	44.50	b	40.20	a	35.61	b	34.94		40.23
1997	35.57	a	33.78	a	35.93	a	38.10		44.23		46.66	a	48.53	a	51.94		47.69	a	42.46	c	38.97	a	33.48		41.44
1998	36.61		38.14		37.39		36.14	a	45.03	b	48.80		54.59	b	49.20	a	44.72	a	41.54	c	39.96	b	32.27	a	42.03
1999	34.83	b	35.59	a	33.57	a	33.38	a	40.32		46.62	a	48.87	a	51.19		41.81	d	39.21	b	41.38	d	35.97	a	40.23
2000	31.97	a	34.72		34.40	a	39.21	b	42.84		45.28	a	50.29		47.10	b	45.15	d	39.31	b	33.78	c	34.32	c	39.86
2001	33.87		29.32	c	35.33	d	36.47		38.93	c	42.77		47.03	b	51.00	e	-----	z	-----	z	38.66	a	34.34	b	38.77	b
2002	35.03	a	32.86		33.52	b	37.46	b	39.67	a	47.07	a	49.17	b	47.43	a	43.86	a	37.94		38.50	b	37.07	d	39.97
2003	38.36	c	32.70	a	38.33	a	37.97		39.33	a	46.55	a	47.48	b	46.57	a	46.40		45.00	a	32.85	c	35.34	b	40.57
2004	34.63	a	34.76		36.57	c	36.61	b	44.41	b	47.77		52.35		53.70	a	45.67		42.70	a	34.73		34.67	a	41.55
2005	35.17	b	29.71		36.33	a	39.33		46.69	b	47.29	b	48.68		50.00	a	40.80		42.13		33.23		34.19		40.30
2006	38.13	a	30.07	a	33.81		36.86	b	42.03		46.83		49.07	b	47.19		44.47		38.27	a	36.79	a	33.40	a	39.74
2007	29.37	a	35.82		37.97	a	37.43	b	39.66	b	45.44	c	51.23	a	49.24	b	46.00	d	38.06		33.21	b	33.63	a	39.76
2008	29.63	a	33.38		32.94		33.70		44.03	a	45.30		47.16		50.61		44.23	d	38.70	a	39.70		29.14	j	39.94	a
2009	27.69	r	30.00	a	31.03		34.93		-----	z	47.40		51.13		48.83	h	47.65	g	34.44	m	33.97		28.77	r	38.08	f
2010	33.78	h	-----	z	-----	z	39.10	i	40.12	f	44.27	s	-----	z	-----	z	-----	z	-----	z	32.24	m	34.50	m	-----	z
2011	32.68		30.46		36.71		33.95	h	40.12	o	53.80	y	46.14	q	49.47	l	46.17		42.42	e	28.40		27.35		34.89	e
2012	27.55		30.55		33.42		36.33	f	36.96	f	33.42	f	-----	z	-----	z	-----	z	40.29	g	36.93	p	-----	z	30.51	i
2013	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z
2014	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z
2015	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z
2016	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z
2017	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z
2018	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z
2019	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z
2020	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z
Period of Record Statistics
MEAN	33.00		33.37		35.01		37.34		41.95		46.39		49.36		49.25		45.52		40.27		36.42		33.76		40.21
S.D.	3.54		3.01		2.15		2.21		1.94		1.72		1.94		1.94		2.32		2.56		3.28		3.05		1.15
SKEW	-0.62		-0.14		-0.37		-0.28		0.22		0.12		-0.17		-0.31		0.52		0.42		-0.61		-0.36		-0.23
MAX	38.36		40.61		39.00		41.00		46.69		51.13		54.59		53.70		51.10		46.45		41.73		39.10		42.85
MIN	23.59		25.18		30.16		32.13		38.74		42.77		44.55		44.03		40.80		35.24		28.31		27.35		37.57
YRS	48		49		49		48		46		47		47		47		47		47		49		47		43