ROSS DAM, WA

Average of Average Temperature (Degrees Fahrenheit)

(457185)

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
1960	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	59.62		50.56		38.32		35.86	b	46.09	h
1961	36.32		37.75		40.21		45.00		51.62	b	63.90		66.55		70.34		55.70		46.03		36.42		33.10		48.58
1962	33.72	b	36.89		36.58	a	47.57	a	48.34		55.19	n	60.77	t	61.35	u	59.62		50.44		42.50	a	37.31		43.66	c
1963	29.35		40.23		40.44		45.31	a	54.53		58.27		61.92		66.27		62.68		51.11		39.38	a	35.75	a	48.77
1964	35.55		37.17		37.73		43.17		49.84		57.53		62.56		60.73		56.45		50.06		39.38	a	28.07	k	48.20	a
1965	32.48	f	35.96		38.74		46.68		51.05		59.50		67.13		65.23		57.37		51.35		43.13		34.13		50.03	a
1966	32.42	a	36.18		39.39		46.70		53.65		57.65		62.42	a	65.21		60.97		48.26		41.17		37.66		48.47
1967	35.42		37.64		37.58		44.07		52.90		62.32		64.76	b	71.82		64.12	b	48.74	b	42.38	a	33.90		49.64
1968	32.50	a	38.57		41.58		43.44	c	53.39		57.25		67.90	g	62.47		-----	z	46.00	h	41.33	c	33.83	d	44.93	c
1969	27.61	i	33.06	a	40.35		45.67		57.47		64.00		63.52		63.11		58.00	b	49.72	h	43.48	c	37.48	b	50.61	b
1970	32.96	d	39.62	b	41.18	a	42.63		53.35		63.78		65.50		66.89		54.98		47.92		39.62		32.71		48.43
1971	31.67	a	35.91		35.48		43.87		54.00		55.28		64.45	b	69.37		55.60		47.19		39.22		29.85		46.82
1972	31.63	e	34.12	a	39.42	a	42.12		54.16		57.05		63.55		66.97		54.05		49.32		40.72		30.87	a	47.00
1973	31.08		37.68		40.89		47.15		53.97	a	57.47		66.17	a	63.35		61.03	a	47.79		36.35		37.47	a	48.37
1974	31.89		36.93		38.76		45.48	a	49.33	a	59.76	a	62.18	c	67.05		63.88		52.34		41.57	a	37.74		48.91
1975	32.95		30.82		37.39		43.17	a	51.84		57.47	a	66.92		59.88	b	61.95		47.94	e	35.71	d	35.66		46.81
1976	35.03		35.16	a	36.13	a	44.83		52.11		56.38	a	62.13		61.21		61.28	a	50.94		42.93		38.89		48.09
1977	33.00	a	40.60	d	39.03		48.67		51.15	d	62.03	a	62.61		70.70	a	57.05	a	48.93	a	35.59	a	32.89		48.52
1978	33.23		37.84	c	42.97		46.43	a	51.62	b	62.92	d	65.63	l	64.16		54.80	b	51.11		36.20	c	31.98	b	46.66	a
1979	27.10	b	32.84		41.67	b	45.75		54.63	a	59.81	a	65.57	b	66.60		60.31	d	52.37		40.41	b	37.59	b	48.72
1980	29.16	c	36.54	a	38.66		49.55		53.79		57.40	a	64.59	d	61.98	b	57.66	a	51.76		41.41	b	36.35		48.24
1981	39.60		37.84		44.29		45.94	c	54.00	a	54.52		64.72	h	69.59	c	59.56	f	48.31	b	42.68		34.98	f	48.53	c
1982	31.56		33.73		40.38	a	42.29	f	52.35		63.98	b	61.94	e	63.36	b	58.88	f	48.05	a	36.62	a	35.12	a	46.71	b
1983	37.95		39.19	b	43.80	a	48.13		57.30	a	58.25	b	60.70	c	65.67	a	55.12	b	48.37	a	41.37		28.38	c	48.69
1984	35.94		37.93		43.57	a	-----	z	48.38	e	57.69	a	65.67	b	65.81		55.40		46.18		37.71	d	29.81		47.64	a
1985	32.92	a	32.80		39.89		45.14	b	54.22	d	60.16	a	71.05	a	64.66	b	55.33		46.02	a	30.37	d	31.78	b	47.03
1986	37.54	c	34.04		43.71		45.02		52.65	a	63.42		61.10		71.42		57.82		53.07	a	39.20		34.79		49.48
1987	33.65		38.93		42.42		49.77		55.37		62.43		65.62	a	66.45		62.92		54.21		44.28		33.77		50.82
1988	31.92		37.14		40.58		47.79	a	53.60	a	58.75		64.95		65.69		59.37		53.32		39.71	b	35.79		49.05
1989	34.10		31.00	d	37.74		49.09	b	52.73		62.53		63.97		63.23	g	62.78	a	49.58		41.60		38.58		47.61	a
1990	35.67	a	31.70	a	41.60	a	49.72		53.35	a	58.22		68.73		68.42		63.43		45.26		40.77		31.19	g	50.62	a
1991	30.03		39.46		38.44		46.38		52.38	a	56.97		65.40		66.58		61.84	a	50.27		40.98		37.72	b	48.87
1992	36.21		40.43		48.03		49.93		58.44		65.38		65.98		67.69		55.82		50.89		40.28		30.90		50.83
1993	25.42		-----	z	42.45		45.98		58.67	a	58.10	a	59.95		64.61		61.38		52.82		36.70		35.98		49.28	a
1994	39.53		33.29		42.30	a	50.32		56.81		58.26	a	68.23		66.84	b	63.30		49.19		34.81	a	32.94		49.65
1995	33.89		37.41		40.45		47.39	c	58.44		60.97		66.87		60.52		65.07		47.45		41.62		34.62	a	49.56
1996	33.73	c	33.88		40.42		46.75		49.37		58.58		68.31		66.98		56.55		47.47		36.73		28.74		47.29
1997	32.86	b	35.79		38.52		45.24	a	54.94		57.09	a	63.44		68.15		60.05		47.72	a	42.52		36.19		48.54
1998	32.63		39.70		42.03		48.05	a	55.03		61.65		70.00	a	68.85		64.59	a	50.23		41.57		32.73		50.59
1999	35.95		35.32		38.61		44.50		50.05		55.97		63.27		66.23		59.65		48.66		41.73		36.23	a	48.01
2000	33.44		36.76		40.52		48.87		52.39		58.95	a	63.94		64.35		57.91	a	49.52	a	38.02	a	33.52		48.18
2001	36.87		35.00	a	41.69		45.65		53.39		57.87		65.27		66.58		61.00		47.21		41.45		33.98		48.83
2002	34.77		35.02		34.47	a	45.25		51.21		60.57	a	65.98		66.73		60.08		49.94		42.28		37.26		48.63
2003	37.63		38.29		39.58	a	45.97		53.47		62.90		69.85		68.79		62.19	a	51.60		35.77		35.32	a	50.11
2004	32.03		38.74		42.76		51.22		55.79		62.73		69.76		68.60		56.17		50.74	b	41.18		37.65		50.61
2005	32.69		37.79		43.34		48.95	a	58.82		58.65		66.24		68.72	a	58.86	a	50.05		38.95	a	35.56		49.89
2006	37.29		34.64		39.57	a	47.60		54.05	a	61.80		69.39		67.65	a	62.00		50.68		37.72	a	34.27		49.72
2007	32.39		37.52		40.90		45.67		55.35		58.95		68.16		65.45		59.55		47.29		39.35		33.40		48.67
2008	30.68		35.75	a	38.42		42.02		54.21		57.62		66.08		65.77		58.65		48.47		42.87		30.62	a	47.60
2009	31.95		34.80		34.73		45.38		53.60		62.32		69.87		66.55		61.32		47.45		39.60		31.08		48.22
2010	38.15		40.38		42.52		45.68		51.18		57.48		66.06		66.10		58.17		50.18		36.55		33.85		48.86
2011	33.60		32.07		37.97		40.98		49.60		56.90		61.08		66.37		63.02		47.50		36.07		34.55		46.64
2012	33.05	a	36.21		36.60		47.03		53.08		55.27		65.34		69.27		63.13		49.76		40.55		34.35		48.64
2013	32.27		37.14		40.84		46.13		55.71		60.02		69.76		68.00		61.18		48.19		39.58		32.05		49.24
2014	37.03		31.07		38.74		46.60		55.34		59.87		69.19		69.48		61.25		51.85		38.83		36.08		49.61
2015	36.92		41.73		45.05		47.33		59.47		68.08		71.27		69.91	i	56.77		52.84		38.13		34.53		50.19	a
2016	33.77		39.55		42.56		53.17		57.37		62.02		65.21		69.24		58.58		48.29		43.40		28.68		50.15
2017	28.08		32.14		38.03		45.75		55.63		60.95		68.79		72.18		63.38		47.37		38.98		33.08		48.70
2018	35.15		32.50		38.90		46.05		60.29		60.10		70.60		69.47		58.52		49.44		41.10		34.15		49.69
2019	35.32		26.84		39.69		47.27		58.15		61.55		65.37		68.50		59.25		45.23		40.17		34.77		48.51
2020	31.85		35.52		38.31		46.52		54.90		57.85		65.19		67.39		62.98		49.00		38.55		36.40		48.71
2021	35.45		31.91		39.98		48.15		54.08		65.48		70.69		67.40		58.47		46.69		40.73		30.93	b	49.17
2022	32.06	d	34.80		40.79		41.57		48.98		58.57		68.76		72.45		64.50		53.95		35.60		28.58	e	48.38
2023	35.31		33.79		37.58		43.35		60.63		61.87		69.71		65.62	c	61.67		51.44		40.27		37.45		49.89
2024	33.20	c	37.72		40.10		46.05	h	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	37.01	i
Period of Record Statistics
MEAN	33.66		36.01		40.11		46.30		53.93		59.86		65.92		66.69		59.77		49.45		39.60		34.22		48.81
S.D.	2.82		2.95		2.53		2.41		2.92		2.85		2.95		2.83		2.94		2.16		2.65		2.70		1.03
SKEW	-0.29		-0.48		0.27		0.18		0.25		0.51		0.02		-0.30		-0.13		0.19		-0.76		-0.43		-0.11
MAX	39.60		41.73		48.03		53.17		60.63		68.08		71.27		72.45		65.07		54.21		44.28		38.89		50.83
MIN	25.42		26.84		34.47		40.98		48.34		54.52		59.95		59.88		54.05		45.23		30.37		28.38		46.64
YRS	62		63		64		61		63		62		59		60		61		62		64		61		50