ROSS DAM, WA

Average of Maximum Temperature (Degrees Fahrenheit)

(457185)

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
1960	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	71.43		58.19		43.47		40.90	b	53.50	h
1961	41.16		42.71		47.90		52.50		62.16		77.93		79.48		84.35		65.90		53.94		42.33		37.58		57.33
1962	38.10		43.93		44.77		57.67		55.19		65.19	n	73.18	t	71.00	t	69.93		57.68		47.13		41.48		50.65	c
1963	34.77		47.21		47.42		52.72	a	65.84		66.60		71.23		76.61		72.77		57.90		44.03		39.67	a	56.40
1964	38.81		43.55		43.13		51.00		59.42		66.90		73.35		69.84		65.13		57.61		43.83	a	32.24	j	55.69	a
1965	36.60	f	41.04		48.58		55.90		61.03		70.57		79.87		74.65		67.50		59.10		47.83		38.55		58.60	a
1966	37.32		41.96		47.03		56.50		64.77		66.73		72.77		76.16		70.53		55.81		45.60		40.84		56.34
1967	38.90		43.29		44.26		52.83		62.39		73.57		76.45		86.97		76.36	b	54.90	a	48.47		38.29		58.06
1968	37.19		45.52		48.23		51.44	c	63.35		66.93		80.54	g	71.42		-----	z	52.39	h	46.33	c	36.41	b	51.87	c
1969	27.53	a	40.14		50.19		54.73		70.32		75.77		75.65		74.10		67.52	a	57.09	h	48.78	c	41.45	b	56.93	a
1970	37.15	d	45.81	b	49.53	a	50.33		64.58		76.50		78.39		80.42		64.20		55.65		44.93		36.94		57.04
1971	35.87		40.82		41.65		53.37		65.77		64.13		77.83	a	82.90		65.33		54.23		43.17		34.10		54.93
1972	34.63	a	40.59		45.55		50.10		65.26		66.50		75.71		79.81		63.43		58.39		45.27		35.13		55.03
1973	36.65		44.29		48.26		57.60		66.30	a	68.20		78.90		74.77		70.83		54.58		40.07		40.71		56.76
1974	36.74		41.36		45.52		52.83	a	57.67	a	71.14	a	73.90	a	79.10		76.13		61.52		45.50		41.81		56.93
1975	37.58		36.54		44.35		51.80		62.61		66.73		78.68		69.81		73.87		53.58	e	40.78	c	40.35		54.72
1976	39.03		40.24		43.07	a	54.60		62.58		66.48	a	73.35		69.35		71.33		59.42		48.40		43.29		55.93
1977	37.90	a	47.64	c	44.65		59.20		60.46	c	73.10	a	73.13		82.48		65.38	a	57.37	a	40.41	a	37.45		56.60
1978	37.39		44.12	c	50.68		54.93	a	61.23	a	75.12	d	76.86	i	74.32		61.03	a	59.23		41.48	c	36.28	b	54.16	a
1979	32.13	a	38.89		50.97	a	54.67		65.23		71.97	a	77.93	a	77.68		69.88	d	60.55		46.21	b	41.66	b	57.31
1980	33.50	a	41.64	a	44.84		60.10		62.55		65.93	a	76.48	b	72.10		66.31	a	60.94		45.83	a	40.42		55.89
1981	43.90		43.61		53.65		54.00	c	63.23	a	62.33		74.44	f	81.97	b	70.28	e	55.79	b	48.33		38.76	f	57.71	b
1982	35.97		39.39		48.70	a	51.25	f	62.58		75.82	b	72.03	b	72.79	b	68.08	e	54.60	a	41.07		39.40	a	55.49	a
1983	42.42		44.46	b	51.90	a	58.83		68.83	a	67.07	a	69.59	b	76.40	a	64.11	b	56.17	a	45.03		32.24	b	56.42
1984	40.48		43.07		50.97	a	-----	z	56.42	e	67.17		78.66	b	77.06		64.37		52.71		41.89	c	33.87		55.15	a
1985	37.23	a	38.50		48.68		53.69	a	64.61	c	72.24	a	86.83	a	75.90	b	64.73		52.47	a	33.62	a	36.13	a	55.39
1986	42.38	b	39.89		51.23		52.10		62.61		74.93		69.87		85.10		66.43		61.87	a	43.90		38.87		57.43
1987	37.77		44.46		49.45		59.27		65.42		74.27		75.90		78.52		74.43		63.74		48.67		37.35		59.10
1988	35.84		42.90		46.81		56.50		62.80	a	68.60		77.06		76.81		70.00		60.74		43.24	a	39.97		56.77
1989	38.03		34.96	a	44.29		59.93		62.19		73.77		74.39		72.17	g	74.76	a	57.19		45.63		42.13		55.21	a
1990	39.32		37.59	a	49.81		58.90		62.07	a	66.93		80.90		79.77		74.33		51.10		45.13		30.27	a	56.34
1991	34.74		44.68		45.81		55.47		60.71		65.73		77.32		77.61		72.83		59.29		44.87		41.00		56.67
1992	40.00		45.93		58.16		59.47		70.29		76.70		75.61		79.61		64.93		57.39		44.60		35.03		58.98
1993	29.81		-----	z	50.55		53.57		68.94		66.23		67.06		74.55		73.20		60.52		41.70		39.61		56.88	a
1994	42.68		37.61		49.94		59.13		67.19		68.27		80.58		77.65		74.67		56.65		38.20		36.61		57.43
1995	37.81		43.14		48.06		57.30		70.23		71.20		77.32		70.10		76.70		53.29		46.20		38.80	a	57.51
1996	35.52		39.93		48.29		54.93		57.35		69.07		81.58		78.81		64.63		53.58		40.63		32.42		54.73
1997	36.19		41.14		44.45		54.83		65.68		66.97		74.45		79.77		68.97		53.52		47.23		40.00		56.10
1998	36.81		45.71		48.58		57.79	a	63.58		70.67		81.74		81.06		77.17		57.58		45.83		36.32		58.57
1999	39.71		39.75		45.39		53.83		60.06		64.30		75.32		77.19		70.73		56.10		45.97		39.03		55.62
2000	37.16		41.93		47.13		58.93		61.42		70.17		74.68		75.90		67.62	a	56.77		42.43		37.52		55.97
2001	41.00		40.96	a	49.13		54.50		64.13		67.40		76.90		78.10		71.17		53.52		45.70		37.26		56.65
2002	38.03		40.25		40.71		53.80		60.84		72.63		78.03		78.68		70.60		58.23		46.77		40.35		56.58
2003	41.26		44.32		45.84		53.67		64.06		74.67		84.06		82.29		73.77		58.45		40.40		39.33	a	58.51
2004	35.68		44.21		50.26		62.60		65.45		74.40		82.48		79.42		64.43		57.58		45.90		41.03		58.62
2005	37.06		44.89		51.48		58.70		69.06		66.43		77.81		81.84		68.80		56.00		42.62	a	39.16		57.82
2006	40.61		40.39		47.19		57.10		65.81		72.17		82.42		80.03		73.27		58.45		41.20		37.97		58.05
2007	36.58		42.54		47.19		53.87		66.97		68.50		80.29		76.81		69.63		53.48		44.23		36.58		56.39
2008	34.65		40.41		44.81		50.47		64.48		67.33		78.52		76.55		68.80		55.48		47.87		34.29		55.30
2009	35.81		40.54		41.29		54.77		65.32		73.47		82.74		77.58		71.63		53.97		43.43		34.77		56.28
2010	42.29		46.14		49.97		53.43		60.10		66.33		78.29		76.84		65.50		57.13		40.70		37.26		56.17
2011	37.48		37.50		43.68		48.10		57.68		65.40		71.26		78.68		74.23		52.94		40.23		38.87		53.84
2012	36.77		41.59		41.94		56.30		63.32		63.37		76.55		81.90		75.37		56.94		44.33		37.13		56.29
2013	35.52		41.57		48.42		54.43		66.03		70.30		83.65		78.84		69.43		54.97		43.40		36.48		56.92
2014	40.87		35.32		44.97		55.80		65.23		70.27		81.90		80.84		70.77		57.48		43.47		39.58		57.21
2015	40.77		47.50		53.00		56.83		70.03		81.13		83.32		81.91	i	65.27		59.16		42.23		37.42		57.88	a
2016	36.61		44.28		49.35		63.13		66.84		72.87		74.77		81.45		67.40		53.65		46.80		32.13		57.44
2017	32.48		36.93		42.84		53.27		66.65		71.17		82.48		85.61		73.93		54.13		42.83		36.13		56.54
2018	38.10		37.54		45.03		54.07		72.06		70.27		84.23		80.90		67.53		56.23		45.27		37.74		57.41
2019	38.74		32.68		49.19		55.67		69.06		72.30		75.58		80.10		66.70		51.61		44.90		37.23		56.15
2020	35.39		40.62		45.68		56.63		65.23		67.27		77.06		80.55		72.40		55.58		42.50		39.81		56.56
2021	39.42		35.64		47.35		59.90		64.77		78.63		83.90		77.90		67.53		52.68		45.43		33.45		57.22
2022	36.26	d	40.36		47.48		49.80		56.68		68.00		82.35		85.48		75.67		61.45		40.57		31.59	d	56.31
2023	39.29		38.68		44.94		51.63		72.45		73.00		82.94		79.11	c	71.73		58.32		45.03		40.55		58.14
2024	35.23	a	42.97		47.29		55.73	h	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	41.83	i
Period of Record Statistics
MEAN	37.49		41.55		47.37		55.28		64.08		70.17		77.72		78.22		69.74		56.60		44.06		37.84		56.72
S.D.	2.98		3.25		3.25		3.19		3.82		4.12		4.21		3.97		3.97		2.81		2.84		2.89		1.13
SKEW	-0.53		-0.35		0.37		0.22		-0.07		0.43		-0.17		-0.24		0.01		0.24		-0.76		-0.56		-0.05
MAX	43.90		47.64		58.16		63.13		72.45		81.13		86.83		86.97		77.17		63.74		48.78		43.29		59.10
MIN	27.53		32.68		40.71		48.10		55.19		62.33		67.06		69.35		61.03		51.10		33.62		30.27		53.84
YRS	63		63		64		61		63		62		59		60		63		62		64		62		51