ICE HARBOR DAM, WA

Average of Average Temperature (Degrees Fahrenheit)

(453883)

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
1957	-----	z	-----	z	47.75	u	55.39	c	65.02		71.28		73.11		71.85		68.33		51.67	b	40.75		41.61		59.89	c
1958	37.82		46.04		44.10		52.12		67.26		73.65		79.58		79.87		65.53		54.53		42.10		36.40	a	56.58
1959	34.50		37.73		47.15		53.60		57.32		69.08		76.63		71.68		62.92		53.55		37.40		33.27		52.90
1960	23.89		38.71		45.23		53.88		59.06		69.75		81.37		72.40		66.55		56.13		43.80		31.03		53.48
1961	35.92		46.00	b	47.82		53.12	b	60.68		74.73		79.26		79.42		62.31	a	52.18		35.63		35.56		55.22
1962	31.35	a	38.04		42.73	a	56.62	a	57.68		67.78		75.18		72.94		66.83		54.33	a	45.31	a	38.66		53.95
1963	27.87		38.29		46.76		51.33		60.94		68.33		72.50		75.32		70.85		57.90		45.90		32.82		54.07
1964	39.34		39.92	c	44.00		51.43		59.23		67.18		75.45		70.52		63.75		53.13		41.25		31.29		53.04
1965	35.87		42.11		42.61		56.20		60.20	a	67.25		74.95	a	74.45		62.58		58.13		46.30		35.74		54.70
1966	37.31		39.71		46.85		54.28		63.19		66.92		73.08		74.74		69.52		55.31		45.57	a	40.81		55.61
1967	43.37		44.43		45.84		49.68		60.56		70.12		77.69		79.81		72.23		56.53		42.57		35.98	a	56.57
1968	37.70	a	42.55		49.34		51.14	a	61.50		68.95		78.02		72.50		66.57		52.71		43.09	a	33.69		54.81
1969	23.00		33.91		45.18		52.83		62.89		71.73		73.35		71.60		65.90		51.34		43.93		36.48		52.68
1970	33.79		41.86		45.13		49.30		60.34		70.58		76.39		74.05		61.35		51.92		41.98		36.05		53.56
1971	39.19		40.89		42.63		51.43		60.95		63.57		74.71		79.00		60.95		52.48		43.60		36.59	b	53.83
1972	34.60	a	37.09	a	48.48		48.68		61.26		67.37		73.48		-----	z	62.78	a	53.32		42.15		29.68		50.81	a
1973	30.98		38.34		47.71		52.72		61.23		67.50		74.65		73.56		64.65		54.27		42.00		40.56		54.01
1974	29.40		43.62		46.28	b	52.28		57.76		69.00		72.13		73.34		66.67		53.42	a	45.52		41.13		54.21
1975	35.94		36.07		43.53		48.03		58.69		64.67		76.72	b	70.48	a	65.16	b	54.56		42.53	a	37.60		52.83
1976	37.48	a	39.50	a	43.26		50.69	a	60.15		63.52		72.50		69.84	b	67.23		53.23		41.68		33.73		52.73
1977	27.31		41.54		45.13		57.13		56.40		69.97	a	71.82		76.13		61.38		51.74		40.80		37.35		53.06
1978	32.44		39.58	b	46.20	c	51.23	b	57.21		67.10		72.03		71.12	b	62.55	a	52.34		35.20		31.98		51.58
1979	18.56	d	36.36		45.61		52.02	a	-----	z	67.42		-----	z	73.63		66.65		57.40		38.36	b	39.32	a	49.53	b
1980	-----	z	-----	z	44.32		54.52		59.58		63.34	a	73.17	a	70.26		65.74	a	52.65	a	44.38		38.90		56.69	b
1981	38.52		40.33	a	47.55		52.55		59.22	a	63.33	a	71.65		75.53		64.79	b	51.69	b	44.22		36.26		53.80
1982	31.13	e	38.42	b	44.75	c	48.76	a	59.17	b	68.15		72.85		73.67	a	64.32		52.48		39.93	c	35.41	b	52.42
1983	40.03	a	42.98		49.21	b	52.32		62.21	c	65.91	a	70.32	a	74.66		61.62	b	52.82		47.08		25.12	b	53.69
1984	34.29		40.45		47.98	b	51.63		-----	z	64.31	a	73.52		73.63		62.16	a	50.72	a	41.38		28.55		51.69	a
1985	27.55		32.58	b	44.52	a	54.97	a	62.18	a	68.26	a	78.55		-----	z	59.98		52.50		-----	z	22.55	a	50.36	b
1986	34.52	a	39.30		49.42		51.45	a	60.23		70.97		69.39		76.78	o	57.35	q	54.82		44.97	a	33.81		50.89	b
1987	31.42	a	40.30	a	47.77	a	57.15		64.31		69.52		73.12	a	73.02		68.77		54.08		45.22		34.68		54.94
1988	33.40		40.43		46.66		54.18		60.13	a	66.77		73.56		72.58		64.07	b	58.68		47.17		34.10		54.31
1989	38.63	a	27.00		43.84	b	54.95	b	59.63	a	69.31	a	73.08	a	71.17	a	65.00	f	53.82		46.07		35.23		52.07	a
1990	40.46	c	37.65	b	46.89	l	56.33	c	59.21		66.82	b	76.15		74.58		70.25		52.81		47.29	a	27.21		55.34	a
1991	30.67	b	44.39		43.90		52.80		58.19		63.42		74.48		76.31		-----	z	54.07	a	43.03	a	39.11		52.76	a
1992	39.44		43.10		-----	z	56.00	a	63.36	b	72.72		73.05	a	74.28	a	62.97		54.77		42.29	a	34.02	a	56.00	a
1993	23.61	c	30.74	a	43.35	n	53.18		64.55		-----	z	68.88	a	70.89		65.78		55.93	a	37.20		37.60		50.84	b
1994	40.19		36.62		48.12	a	56.45	a	-----	z	67.13		77.40		76.67	b	68.64	a	53.95		41.92		37.35		54.95	a
1995	33.69	d	43.17	a	45.32	a	52.25		61.05	a	65.33		73.71		69.82		67.15		51.91	b	46.55		35.88	a	53.82
1996	34.95	a	36.62	c	44.92		53.92		57.26		65.95		75.06		71.95	a	63.23		53.90	a	41.69	a	32.37		52.65
1997	34.55		39.93		47.40		51.22		62.03		65.91	b	72.85	a	75.10		65.71	a	53.58		43.67		37.71		54.14
1998	37.19		43.00	a	47.92	a	52.53		60.48		67.62		78.84		74.74		70.15		52.67	a	47.55	b	36.18		55.74
1999	41.19		43.21		46.16		50.35		56.72	a	65.97		70.43	a	72.45		63.55		52.28	a	47.53	a	40.97	a	54.24
2000	37.47		39.55	a	46.25	a	55.62	a	60.53		65.16	b	73.02	a	73.69	b	63.36	a	52.40		37.20		32.94		53.10
2001	34.05	a	36.91		46.84		51.42		61.35	a	64.80		74.19	b	75.17	a	66.97	a	52.93	b	44.70	b	39.43	d	54.06
2002	39.19	d	39.07	a	43.03	a	52.61	b	57.11	c	68.02	a	75.44		71.06		64.38		51.21		42.45		40.60		53.68
2003	40.40	b	40.22	a	50.37	a	53.20		59.92		69.45		77.15	a	75.13		67.57		58.12	a	39.60		37.15	a	55.69
2004	30.02	a	38.04	b	50.00	d	55.30		61.19		68.40		76.73		75.62	a	64.53	a	55.81	b	42.84	a	38.58		54.76
2005	33.10		37.54	d	49.58		-----	z	63.00	b	66.32		75.19		74.83	b	63.98		55.98	d	42.35		29.98	d	53.80	a
2006	43.00	j	36.84		45.62	a	53.07		60.82		68.30		77.57	a	73.13		65.52		53.58		43.81	a	33.00	a	55.57	a
2007	31.84		39.11		48.10		52.45		61.74		67.41	b	77.77	a	71.81		64.40		52.69		42.92		37.47	a	53.97
2008	31.73		41.67		44.69		48.48		60.64	c	65.07	a	74.78	a	72.35	a	63.78		52.11		45.12		30.21		52.55
2009	35.10		36.48	a	42.58		51.98	b	60.44		68.61	b	75.27	c	75.00		66.50		50.55		44.13		28.61		52.94
2010	39.50	b	41.89		47.34		51.03		57.34		65.34	a	73.20	c	72.32	a	64.92		54.43	a	41.80		35.37	a	53.71
2011	36.31		36.52	b	45.79		48.18	b	57.12	c	64.34	a	69.56		74.69		67.23	b	55.29	b	42.75		33.66		52.62
2012	35.79		38.93	b	46.42		53.77		59.12	a	64.21	a	74.60		73.81		-----	z	53.84		-----	z	37.47	m	55.61	c
2013	32.42		-----	z	46.13		-----	z	-----	z	-----	z	-----	z	75.23		68.00		-----	z	41.10		29.56		48.74	f
2014	35.89		-----	z	46.95		-----	z	61.10	b	67.15		77.55		75.40		65.71	a	59.37	a	40.88		38.13		56.81	b
2015	36.48		43.27		50.58		-----	z	-----	z	73.97	a	77.16		75.19		64.10		58.03		42.20		37.98		55.90	b
2016	35.08		43.46	a	47.77	a	58.48		62.92	a	68.38	a	73.76		74.47	b	63.72		55.50		48.52		31.65		55.31
2017	22.79		32.93		46.66	c	51.52		61.19		67.81	a	77.27		75.35		66.10		52.69		44.60		32.98		52.66
2018	39.35		40.41		44.71		52.95		65.10	a	67.11	b	75.58		74.15	a	64.79	a	53.03		41.70	e	39.06		54.83
2019	37.02		26.69	a	36.66		54.03		61.89		69.40		73.07	a	75.32		68.03	a	49.13	a	39.70		35.85		52.23
2020	39.97		41.48		45.74		52.73		61.24		67.27		74.37		75.42		66.60		56.05		43.18		35.93	a	55.00
2021	39.19		35.70		46.60		53.78		61.73		73.38		80.15		75.10		66.05		55.31		46.85		37.55		55.95
2022	32.56		38.16		48.45		48.42		56.58		66.22		77.82		78.83	b	68.52		59.69		39.10		-----	z	55.85	a
2023	-----	z	-----	z	-----	z	51.47		65.42	a	69.70		-----	z	75.50		-----	z	-----	z	-----	z	-----	z	65.52	h
Period of Record Statistics
MEAN	34.42		39.15		46.10		52.75		60.59		67.75		74.78		74.03		65.43		54.00		42.88		35.09		53.96
S.D.	5.07		3.87		2.36		2.38		2.37		2.68		2.69		2.33		2.58		2.24		2.94		3.98		1.18
SKEW	-0.96		-1.01		-0.86		0.09		0.36		0.52		0.12		0.47		0.29		0.66		-0.45		-0.77		0.35
MAX	43.37		46.04		50.58		58.48		67.26		74.73		81.37		79.87		72.23		59.69		48.52		41.61		56.58
MIN	18.56		26.69		36.66		48.03		56.40		63.33		68.88		69.82		59.98		49.13		35.20		22.55		51.58
YRS	63		62		62		63		62		65		64		64		62		65		64		64		46