BOUNDARY DAM, WA

Average of Average Temperature (Degrees Fahrenheit)

(450844)

File last updated on May 6, 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
1965	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	68.36	c	67.73		53.25		48.75	a	36.82	b	29.68		50.76	f
1966	27.29	c	32.13	a	37.05		45.21	b	57.37		58.22		65.39	d	64.12	a	61.45		45.77	a	35.83		32.26		46.84
1967	29.39		32.93		35.68		42.63		53.16	c	63.53		67.52		70.32		63.82		45.10	a	34.82		24.53		46.95
1968	25.21		30.07	a	38.65	a	43.95	i	49.98	a	57.33	a	64.67	a	63.19		56.35		43.42		35.07		24.22	b	44.38	a
1969	15.87		27.77		36.29		42.65	f	52.65		60.45		62.87		63.73		57.58		43.71		36.47		29.11		44.23	a
1970	23.76		32.71		35.10		41.63		51.47	a	59.17		66.53		66.58		52.02		43.56		32.65		-----	z	45.93	a
1971	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z
1972	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z
1973	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z
1974	-----	z	-----	z	-----	z	44.31	a	47.98		58.86	b	63.10		65.85	g	58.03		46.37		36.45		30.73	a	48.23	d
1975	22.77		25.63	a	33.08	a	40.83		49.98	a	55.58		66.15	n	61.21		57.97		45.11	d	33.54	d	-----	z	42.57	b
1976	27.15	a	29.96	c	31.28	a	42.07	b	51.05	a	53.83		62.27	a	62.18		60.10		45.73	a	34.02		27.73		43.95
1977	19.31	e	31.57		36.34		47.22	a	50.81	b	62.72		64.97		67.28	a	53.03		44.11		30.63		22.77		44.23
1978	24.06		31.38		36.92		45.00		49.45		57.77	b	65.06		63.45		55.87		-----	z	29.73		19.56	d	43.48	a
1979	10.77	a	25.52	a	34.52	k	43.70	b	51.90		58.34	a	66.27	a	68.42	a	59.50		47.77		31.67		31.88	a	45.07	a
1980	18.87		29.33		35.15		48.52		54.82		56.86	a	64.65		61.18		55.72		47.52		35.63		30.26		44.87
1981	31.02		30.98		40.61		43.77		52.60		54.43	b	62.60	a	67.90		57.02		43.76		38.00	a	27.29		45.83
1982	23.34	c	27.12		36.00		40.90	a	49.57	c	59.77		62.26		63.65		56.98		45.59	b	30.34	e	25.60	a	43.43
1983	29.48		30.70	m	40.23	a	45.53		53.02		58.09	b	60.00		67.34	f	52.47	a	43.85		37.73		16.15		43.66	b
1984	25.60		30.97		38.06		44.71	b	47.35	a	54.36	a	65.17	b	65.08		51.27		41.94		32.27		18.13		42.91
1985	21.77		22.12	g	33.71		44.38	b	53.77		59.81	a	71.08		62.23		51.43		41.35		21.87		21.98		43.94	a
1986	28.24		27.62		39.31		44.37		54.03		63.48		61.58	a	67.73		52.74	a	47.05	a	33.33		26.45	a	45.49
1987	24.21		32.86		39.26		49.53		56.65	a	63.33		66.90		64.19		60.15		45.87		39.00		27.29		47.44
1988	23.32	a	28.76	d	38.69		49.32		54.92		61.32		66.02	a	66.66		57.34	a	48.92		36.73		26.31		46.53
1989	26.27		20.96		35.15		47.18		53.03	a	63.69	a	67.00		63.98		57.40		44.98		35.57	b	30.16		45.45
1990	30.32		26.88		38.53		48.83		52.27		56.83		68.71		66.94		61.13		43.13		36.95		18.71		45.77
1991	19.87	a	35.73		35.18		45.62	b	51.50	b	57.12	a	65.58	a	68.23	c	58.90	a	43.58		33.08		29.13		45.29
1992	30.95		35.66		43.63		48.14	a	56.76		67.12		65.60		66.08		54.17	a	46.66		35.18	e	21.33	a	47.61
1993	18.73	e	25.74	c	35.33	a	44.29	b	59.20	a	59.41	a	60.60	a	63.63	a	57.29	d	47.07	a	28.36	b	27.47		43.93
1994	31.38	a	26.76	a	38.97	a	49.02		55.43	b	58.81	d	69.90		66.81		60.32		45.47		30.95	a	26.69		46.71
1995	24.97		30.78	a	35.71		44.13		55.85		60.85		66.35		61.53	b	59.76	a	43.26		33.96	b	27.84		45.42
1996	23.31	b	25.05		34.42	a	45.22	a	49.37		57.88		68.40		65.19		53.98	a	43.48		31.97		22.91	b	43.43
1997	24.22	b	29.30		34.67	a	41.62	b	52.37	a	57.48		64.88	b	66.63	a	58.23		45.88	a	35.29	b	28.73	a	44.94
1998	27.08		34.38		39.15		46.72		57.02		60.80		71.95		68.32		63.47	a	45.08		37.84	a	26.03		48.15
1999	30.27		32.22	a	37.55	a	43.77	b	50.83	b	56.45		62.44		67.29		54.66	a	44.12	a	38.83	a	30.39		45.73
2000	26.25	a	30.11	b	37.63	a	47.13		50.71	b	59.87		66.18	a	66.21		54.52		44.83	a	29.47		24.83	j	46.63	a
2001	27.96	c	27.56	a	37.55		43.17		54.77	a	57.92		66.65	a	67.84	c	60.21	a	43.02	b	38.57		27.42	a	46.05
2002	27.90	b	28.89	a	32.11		43.93	a	50.45		59.03		67.53	a	64.50		56.98	a	42.22	b	34.17	a	31.68	a	44.95
2003	29.90		30.55		37.06		45.62		52.79		61.36	a	70.23		69.31	b	57.33	c	49.39	h	28.62		25.78	b	46.23	a
2004	27.52	c	31.39	a	39.54	d	48.25		53.92		61.52		67.79		67.94		54.55	a	44.85	e	34.35	c	29.52		46.76
2005	23.79	b	28.64		38.06		45.30		55.11		58.23		65.05		65.05		53.57	a	45.31		33.45		21.00	a	44.38
2006	32.03		25.88		35.03		45.42		52.59	d	60.90	d	70.31		65.29		57.78		43.53		32.06	c	25.00	b	45.49
2007	20.76		30.94	c	36.69		43.88		53.27		59.77		71.63		64.13		54.83		41.23		29.17		22.98		44.11
2008	19.19		27.80	a	32.31		37.75		50.97		53.26	c	64.08		62.81		52.58		40.82		36.40		21.08		41.59
2009	24.92		30.26	a	35.08	e	44.80		51.79	c	61.12		68.47	a	67.85		60.80		41.85		35.67		21.34		45.33
2010	30.40		35.68		40.52		44.57		51.00		58.20		66.34		65.48		56.23		46.71		32.90		27.37		46.28
2011	25.27		24.62		36.13		41.05		51.52		57.08		63.56		67.97		60.48		46.00		31.63		26.27		44.30
2012	25.55		30.31		34.98		45.70		50.85		56.40		67.08		68.22	d	58.48		45.10	b	37.17		31.52		45.95
2013	25.21		33.11		37.48	a	44.60		54.40	b	59.57		69.26		68.73		59.98		43.44		32.35		22.23		45.86
2014	28.77	a	20.46	b	33.38	a	43.09	a	53.50	a	58.43		68.98	b	68.74		57.00		48.56		31.77		28.11		45.07
2015	28.40		34.54	a	41.56		46.12		57.58		67.22		70.81		68.95		55.00		48.84		33.63	c	29.21		48.49
2016	30.48	d	34.97		40.71		52.32		57.52		62.08		66.44	d	67.13	a	56.22		46.00		40.79	a	22.44		48.09
2017	20.06		27.52		35.79		43.40		52.61		61.17		72.31	b	70.31		59.32		43.65	a	34.98		24.39		45.46
2018	30.20	a	26.07	a	36.62	c	43.47	a	55.70	f	58.88		68.76		67.35		55.73		44.31		34.95		29.66		45.09	a
2019	28.71		20.88		34.69	d	45.36	a	57.65		61.97		65.76	b	68.62	e	57.75		40.96	f	33.08	d	30.15		45.87	a
2020	29.05	a	30.66	a	35.78	a	43.98		53.24		58.64	a	66.46	c	67.59	c	59.68		44.90	a	34.90		29.50	c	46.20
2021	29.48	d	26.26	e	37.94	d	46.13		54.08	a	67.06	d	76.10	b	66.77	c	57.79	b	45.48	e	35.78	a	24.10	a	47.25
2022	25.61		26.96	c	38.07	b	41.02		50.20	a	58.88	b	70.18	a	70.78	a	60.70		49.63		27.19	a	21.02	a	45.02
2023	30.93	b	28.25	b	33.97	b	42.16	b	61.27	a	64.09	a	70.20	a	68.43	c	57.71	d	46.58	a	32.33		30.45	c	47.20
2024	24.32		33.33	f	37.38	a	44.86	b	47.92	y	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	35.52	i
Period of Record Statistics
MEAN	25.66		29.29		36.77		44.84		53.11		59.57		66.71		66.25		57.12		45.00		33.86		26.10		45.59
S.D.	4.38		3.64		2.51		2.62		2.87		3.10		3.21		2.45		2.99		2.06		3.36		3.96		1.48
SKEW	-0.95		-0.34		0.22		0.21		0.53		0.48		0.29		-0.37		-0.04		0.19		-0.79		-0.49		-0.26
MAX	32.03		35.73		43.63		52.32		61.27		67.22		76.10		70.78		63.82		49.63		40.79		32.26		48.49
MIN	10.77		20.46		31.28		37.75		47.35		53.26		60.00		61.18		51.27		40.82		21.87		16.15		41.59
YRS	55		52		54		54		54		55		55		54		56		53		56		53		42