BOUNDARY DAM, WA

Average of Maximum Temperature (Degrees Fahrenheit)

(450844)

File last updated on April 25, 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	85.00	b	81.94		66.50		58.87		41.83	a	33.87		61.33	f
1966	32.43	a	39.07		47.55		59.03	a	73.68		71.00		80.61	c	81.30	a	76.30		55.29		41.30		36.29		57.82
1967	35.68		41.64		44.26		54.57		66.52		79.30		85.13		90.48		81.03		53.90	a	40.90		30.55		58.66
1968	31.23		39.57	a	48.52		54.04	g	61.00		68.53		79.29		76.61		68.67		52.65		41.10		31.41	b	54.42	a
1969	23.48		38.00		49.94		51.38	f	64.06		70.83		77.97		81.65		70.97		53.32		42.60		33.23		55.10	a
1970	30.35		42.04		47.19		52.00		65.10		68.83		80.52		85.68		65.03		54.06		39.60		-----	z	57.31	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	52.30		56.71		68.59	a	75.39		82.00	g	75.27		61.45		41.13		35.37	a	58.28	d
1975	30.32		34.54		41.90		53.27		60.50	a	65.03		78.82	n	74.13		73.93		53.50	c	40.69	d	-----	z	52.78	b
1976	33.55		38.56	b	41.83	a	50.93	a	61.90	a	64.03		73.55		72.52		75.53		57.23	a	42.07		33.16		53.74
1977	26.30	d	41.04		45.68		63.60		62.03	b	78.43		80.29		85.45		64.90		56.39		37.93		30.39		56.04
1978	31.71		38.71		47.74		55.73		60.03		69.03		77.71		77.58		66.67		-----	z	37.10		26.36	c	53.49	a
1979	20.77	a	31.81	a	44.75	k	56.11	b	64.48		70.69	a	82.35		86.39		75.23		59.26		39.27		37.26		56.69	a
1980	27.23		36.07		44.81		61.67		64.61		66.00	a	79.94		75.94		69.23		58.65		42.43		35.00		55.13
1981	37.29		39.61		52.68		54.90		62.00		63.46	b	74.77		85.61		71.43		53.32		43.77		33.77		56.05
1982	29.94		36.04		45.48		52.87		61.73	a	70.47		75.35		77.35		69.13		54.77		37.72	e	32.19		53.59
1983	35.35		39.40	m	47.52		57.17		65.97		68.17		70.03		81.77		66.77		55.48		42.83		24.23		55.94	a
1984	31.84		38.83		47.52		56.69	a	57.97		64.83	a	81.70	a	84.74		66.80		53.68		38.43		26.39		54.12
1985	29.13		33.52	g	46.42		57.80		67.61		74.07		92.90		78.58		64.37		51.19		29.73		28.77		56.42	a
1986	34.68		38.89		50.84		55.93		68.26		77.87		75.71		87.94		65.47		59.16		40.43		33.30	a	57.37
1987	34.00		42.82		49.74		63.73		71.19		79.27		81.94		81.23		78.77		60.03		44.37		33.13		60.02
1988	31.61		37.28	d	49.26		64.30		68.16		74.03		82.70	a	85.55		72.93	a	59.68		42.37		32.52		58.37
1989	34.65		31.00		44.90		61.63		66.42		79.37		84.58		77.58		74.33		56.03		41.82	b	34.45		57.23
1990	36.52		35.75		50.71		62.40		63.03		66.90		84.81		83.13		80.23		54.00		43.60		25.71		57.23
1991	27.71		42.79		45.26		59.23		62.48		68.37		79.74		83.73	a	75.30		58.52		39.07		34.97		56.43
1992	35.48		42.21		57.61		61.53		72.61		82.73		79.16		84.06		69.43		58.35		39.70		27.68		59.21
1993	26.65		35.46		45.97		54.67		75.48		72.20		70.87		78.55		72.70		59.39		36.13		32.84		55.08
1994	36.74		34.04	a	51.84		61.67		68.84		72.03		88.26		86.10		77.53		56.48		35.97		32.77		58.52
1995	30.65		39.46		46.23		57.90		71.71		73.33		81.94		77.17	a	77.03		51.42		40.76	a	33.97		56.80
1996	29.48		34.90		45.61		56.77		59.29		69.90		85.81		82.84		67.55	a	53.03		37.83		28.10		54.26
1997	31.58		38.04		44.10		53.77		63.06		67.87		78.26		82.90		70.60		54.74		42.00	a	34.23		55.10
1998	32.52		41.57		48.55		59.97		71.32		72.60		87.42		86.29		80.10		53.84		43.28	a	30.90		59.03
1999	35.32		38.61		47.90		58.57		63.84		67.37		77.90		83.13		71.37		55.58		44.07		34.03		56.47
2000	32.84		37.93		46.10	a	61.73		63.13	a	73.90		82.52		85.10		69.23		56.39		36.57		29.47	a	56.24
2001	33.97	a	37.14		48.23		54.37		69.52		70.37		82.58		86.17	a	77.40		53.32		44.47		33.23		57.56
2002	33.97		37.43		42.10		57.83		62.29		70.83		85.03		83.29		72.80		55.83	a	40.70		36.26		56.53
2003	34.71		39.11		46.00		57.77		65.81		76.13		89.90		88.42		75.07	a	60.34	b	36.70		32.94		58.57
2004	31.90		40.76		52.97	b	64.80		68.06		77.00		84.68		83.90		67.14	a	56.23	a	41.66	a	35.03		58.68
2005	30.55		41.14		51.00		60.60		70.16		70.63		82.58		85.13		70.59	a	55.68		39.27		29.03		57.20
2006	37.84		37.64		47.19		59.97		67.87	a	75.39	b	89.00		85.84		76.27		57.42		39.37	c	33.21	b	58.92
2007	29.81		39.36	c	49.19		57.60		69.29		74.60		91.23		83.94		74.00		53.52		40.17		32.32		57.92
2008	30.16		39.55		44.65		52.63		67.61		68.37	c	84.06		82.45		71.43		55.32		42.20		27.26		55.48
2009	31.55		39.15	a	42.65		57.43		66.00	c	74.90		85.00	a	84.35		78.07		51.42		41.50		27.65		56.64
2010	35.32		42.04		52.13		56.90		64.10		68.57		82.84		82.48		67.90		56.45		38.57		33.71		56.75
2011	31.10		34.50		44.61		51.20		63.19		66.87		75.58		85.94		78.17		55.61		38.10		32.19		54.75
2012	32.42		37.86		43.35		57.13		62.65		65.43		80.19		87.15	d	75.57		55.86	b	42.73		35.74		56.34
2013	31.71		39.82		48.20	a	57.77		68.38	b	71.33		87.45		85.19		72.77		54.77		39.40		28.16		57.08
2014	34.70	a	33.12	b	44.27	a	56.59	a	66.30	a	70.50		84.48	b	84.61		71.57		58.97		38.93		33.39		56.45
2015	33.81		42.07	a	53.45		60.93		73.65		83.77		87.45		87.26		69.10		61.48		40.52	c	34.00		60.62
2016	34.26	d	41.66		50.90		67.53		71.52		76.03		81.96	d	85.27	a	70.70		53.68		46.83	a	28.94		59.11
2017	27.87		36.54		43.94		52.63		63.26		73.97		91.59	b	89.39		74.97		55.20	a	40.10		29.87		56.61
2018	34.73	a	35.11	a	45.54	c	54.31	a	66.68	f	71.27		87.13		84.97		70.00		55.48		40.60		35.23		55.85	a
2019	34.65		31.57		47.56	d	57.45	a	72.87		76.80		80.93	b	85.88	e	69.20		50.56	f	40.58	d	35.03		57.50	a
2020	33.73	a	39.64	a	47.43	a	58.53		64.26		69.00	a	82.39	c	86.29	c	74.70		54.70	a	40.93		34.04	c	57.14
2021	35.33	d	34.87	e	50.04	d	61.73		69.73	a	83.54	d	95.24	b	81.68	c	71.86	b	55.12	e	41.45	a	30.97	a	59.30
2022	31.55		36.92	c	48.41	b	53.13		60.83	a	69.75	b	86.60	a	89.30	a	77.77		62.03		34.69	a	27.67	a	56.55
2023	36.28	b	36.65	b	46.45	b	54.07	b	75.23	a	79.45	a	89.40	a	85.96	c	71.58	d	57.30	a	38.97		36.07	c	58.95
2024	31.00		41.26	f	50.03	a	60.43	g	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	40.52	j
Period of Record Statistics
MEAN	32.18		38.08		47.48		57.65		66.06		72.06		82.57		83.42		72.30		56.03		40.30		32.00		57.04
S.D.	3.39		2.97		3.23		3.85		4.50		4.98		5.34		3.89		4.32		2.66		2.79		3.14		1.70
SKEW	-0.97		-0.45		0.56		0.32		0.22		0.53		-0.05		-0.83		0.06		0.40		-0.89		-0.60		-0.10
MAX	37.84		42.82		57.61		67.53		75.48		83.77		95.24		90.48		81.03		62.03		46.83		37.26		60.62
MIN	20.77		31.00		41.83		50.93		56.71		63.46		70.03		72.52		64.37		51.19		29.73		24.23		53.59
YRS	55		52		54		53		54		55		55		55		56		54		56		54		44