MUD MOUNTAIN DAM, WA

Average of Average Temperature (Degrees Fahrenheit)

(455704)

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
1939	38.36	m	35.76	a	41.93	a	49.24	c	53.12	a	53.93	b	62.16		63.40	a	57.75	b	51.52	f	48.62	d	44.08	f	51.77	c
1940	41.22	h	41.31	b	45.77		48.45	b	56.11	c	59.55		61.55		62.00		59.83		52.43	d	41.33	f	41.73	e	52.87	b
1941	42.46	e	44.39	f	48.93	a	50.39	b	52.55	b	56.34	b	65.68		61.72	a	54.67	d	50.55	c	44.64	h	38.68	c	52.20	b
1942	38.65	h	39.71		41.61	c	47.88	a	51.32	a	55.15	c	64.10		63.72	a	58.37		52.69		41.95		39.50		50.54	a
1943	32.65		42.75		40.64	c	48.86	a	49.50		54.28		61.16		59.55	a	59.40		50.35		45.80		40.16		48.76
1944	38.87		37.98		40.02	a	46.10		51.18		55.28		61.63		59.89		59.52		55.21		43.18		39.34		49.02
1945	40.02		39.07		40.06		42.23		52.87	a	54.72		63.02		61.35		55.14	b	52.12	c	40.74	a	38.48	b	48.32
1946	38.32	a	39.12	c	41.10	b	46.09	b	54.08	a	54.37		61.02		61.44		57.04	c	45.34	c	40.71	a	37.94		48.05
1947	33.82	a	41.09		45.50		48.82		55.77		55.35		60.06		59.31		57.93		50.34		41.33		40.79		49.18
1948	37.53	a	35.66		39.40	a	42.82		49.93	b	59.27	b	58.39		58.68	a	55.18		49.65		39.15		33.95		46.63
1949	27.60	a	35.23		42.44		46.98		53.63		54.43		59.00		59.04	g	58.32		45.42		50.18	b	36.08		46.30	a
1950	23.13		36.59		39.03		43.57		48.97		55.85	c	61.55		63.16		57.75		47.55	a	41.43	a	42.69		46.77
1951	34.93	b	38.11		36.75	c	48.30		51.43	a	58.25		62.48		60.71		59.64	a	50.03		43.25		35.50	c	48.28
1952	33.98		37.91		39.29		47.15		51.87		53.23		62.53	a	61.97		60.13		55.60	a	41.72		39.81		48.77
1953	43.06		40.09		41.19		45.13		51.08		52.93		60.92	a	61.34		58.62		51.76		45.24	e	40.80	a	49.35
1954	34.63		41.98		39.71		43.09	a	51.81		52.33		56.59	b	56.87		55.53		49.39		47.83	a	39.60	b	47.45
1955	36.63		35.20		34.39		41.48		47.50		54.42		56.40		58.81	d	55.20		49.71		37.35		36.90		45.33
1956	36.08	a	33.88		39.00		47.57		54.85		54.20		63.03		60.66	b	56.82		47.45		42.76	a	39.81		48.01
1957	30.55		36.19	a	41.53		45.91	a	54.78	a	57.37		59.00		58.48		61.72		49.66		42.55		41.21		48.25
1958	42.50	a	45.14		41.32		46.37		57.88	a	60.62		67.40		64.69		57.22		52.82		41.95		43.57	a	51.79
1959	38.58		36.34		40.62	b	46.90		50.00		56.50		63.10		59.94		53.77		50.13		43.08		38.79		48.15
1960	35.71		38.61	a	40.84		45.95		49.16		56.45		63.94		59.31		55.93		51.00	c	41.81	a	39.58		48.19
1961	44.27	a	41.36		42.76		44.28		50.60		60.57		63.57	a	65.45		54.63		48.23		40.33		37.45		49.46
1962	37.10		40.66		39.16		47.55	a	46.76		55.30		59.50	a	59.57	a	57.88		50.37		44.68		40.68		48.27
1963	31.48		46.41		41.03		43.85		52.16		54.45		57.40		59.94		60.58		51.61		43.07		40.37	a	48.53
1964	38.10	a	38.52		39.97		42.22		48.42		53.38	a	59.26		58.48		54.28		53.40		38.86	b	33.55		46.54
1965	38.71		39.29		42.87		46.31	a	48.17	a	55.98		62.92		61.98		54.62		53.58		46.55		37.16		49.01
1966	37.37		39.23		41.74		46.67		51.21		54.90		58.69		60.58		58.30		48.63		43.97	a	41.48		48.56
1967	39.68		39.88		39.23		41.55		51.11		60.23		62.11		67.65		61.75		51.10	a	44.20		37.29		49.65
1968	38.11		45.79		45.42		43.88		51.37		56.00		62.97		59.73		57.00		48.66		43.67		33.27		48.82
1969	30.10		37.38		42.94		45.58		54.52		60.42		60.32		58.69		57.20		47.94		44.72		40.82		48.38
1970	36.68		44.34		42.21		41.78		50.82		60.00		61.48		60.50		54.23		48.56		43.75		35.94		48.36
1971	36.35		39.07		37.61		44.93		51.34		51.75		62.61		65.18		55.22		46.81		41.33		34.50		47.23
1972	33.11		38.74		42.45		42.70		53.97		55.88		62.45	a	63.03		53.75		47.10		43.52		34.24		47.58
1973	35.53		41.34		41.48		46.03		52.89		55.95		61.89		57.81		58.05		48.84		38.67		41.74		48.35
1974	34.47		38.59		41.10		44.93		48.00		57.53		60.06		63.31		62.17		51.42		43.07		40.21		48.74
1975	36.29		36.75		39.53		40.48		51.47		55.02		62.50		58.58	a	59.08		48.52		41.53		39.94		47.47
1976	39.44		38.47		38.76		45.65		51.89		53.85		60.48	a	58.27		58.33		49.90		45.38		40.89		48.44
1977	35.90		44.59		39.76		48.70		48.50		57.45		59.65		65.89		54.67		48.79		40.03		38.85		48.56
1978	40.26		41.75		44.55		45.50		50.27		60.62		62.10		61.47	a	55.02		52.13		38.28		33.48		48.79
1979	32.02		37.59		44.85		45.68		53.21		57.55		62.63		61.13		58.98		51.32		41.55		42.90	a	49.12
1980	31.44		40.14		40.76		48.28	a	50.42		53.98		60.92		59.45	b	56.47		51.44		44.02		41.58		48.24
1981	44.79		40.80		45.27		46.25		50.60		53.97	a	59.45		65.31		57.65		47.26		45.09	c	38.39		49.57
1982	35.38	a	38.20		40.66		43.19	a	50.55		59.97		59.19		61.40		57.33		49.93	c	40.22		-----	z	48.73	a
1983	42.54	c	43.38	b	45.39		47.07		54.31	b	55.40		58.50		61.23		54.25		48.16	b	43.67	a	31.65		48.79
1984	40.05	a	41.18	a	43.73		44.08		48.08		53.47		60.69		61.05		54.60		45.13		40.02	c	34.50		47.21
1985	37.18		35.80		39.76		46.50	a	51.52		56.73		66.61		61.94		54.22		48.18		32.36	a	36.52		47.28
1986	43.36	b	39.26	a	45.68	a	44.52		51.58		60.27		57.71		65.90		54.50		52.02		41.68		39.53	a	49.67
1987	38.34		43.59		44.11	c	48.95		53.48	a	58.60		60.37		62.53		59.43	b	54.08		45.48		36.52	b	50.46
1988	38.53	a	41.19		42.61		47.35		51.37		55.63		61.47		61.66		58.12	a	52.27	a	42.98	a	40.32		49.46
1989	37.79		32.30		40.40	a	49.90		52.03		59.98	a	60.45		60.97		60.55		50.03	a	43.67		40.00		49.01
1990	39.77	a	36.89	a	44.97		48.97		50.89		56.47		65.18		64.29		60.58		48.77	a	43.50	b	31.36	b	49.30
1991	36.84	b	46.64		40.42		45.38		50.27		53.75		62.66		64.73		59.57		50.27	a	43.84	a	40.61	d	49.58
1992	43.00	d	46.86	a	47.42	a	49.88		55.92		60.63		62.35		63.56		57.03	a	50.88	a	42.21	d	36.09	b	51.32
1993	34.89	d	39.44	c	45.13	a	46.48	b	56.63	a	56.38	a	57.79		61.97		60.00		53.21		38.41	b	39.77	c	49.18
1994	42.29	c	37.46	c	45.81	b	48.86	a	54.53		56.28	a	64.53		63.24		61.29	a	50.09	b	38.90	i	38.44	f	52.44	b
1995	43.06		41.20	f	45.76	f	47.07		55.21		57.66	b	64.02	d	59.15	a	61.84	a	47.98		46.76	c	40.76	d	52.35	b
1996	37.40	e	41.80	d	43.73	a	48.34	a	48.03	b	56.12	b	64.89		63.40		55.09	c	50.09	b	40.93	c	38.17	a	49.00
1997	39.61	d	40.85	b	42.85	a	45.78	a	55.91	b	55.77	b	61.37		65.05	b	60.03		49.15	d	47.26	a	41.71	e	50.44
1998	40.16	b	43.11	a	44.12	a	46.72		51.27	a	56.65	d	65.21		63.53	a	61.21	a	51.18		43.31	f	36.11	c	50.84	a
1999	38.33	b	36.94	b	40.40	b	44.60	a	47.03	a	53.86	a	58.63		60.09	b	55.86	a	47.77	c	45.00	b	36.00	h	48.05	a
2000	32.27	e	36.02	a	35.74	b	-----	z	47.52	a	53.28	a	56.50		57.70	a	52.88	a	46.16	b	36.13	c	35.18		44.49	a
2001	36.86	b	34.90	c	39.55		40.20	c	47.82	a	51.14	b	56.09	c	58.10	a	53.68	b	45.23	a	40.38	e	32.58	a	44.71
2002	31.77		32.59		31.14	b	38.78	a	43.53		52.07	a	58.22	a	61.15		57.42		46.66	b	45.22	c	39.83	a	44.86
2003	43.02	b	37.77		42.65		43.68		49.90	a	58.95	a	64.47		63.47		59.94	f	51.28	d	34.10	e	34.93	a	47.66	a
2004	35.09	h	36.86		40.15		45.00	b	50.72	a	55.81	a	61.12	a	60.87		51.34	a	46.39		37.26	a	36.02		47.41	a
2005	36.06		36.79		42.03		41.72		49.82		51.10	a	57.66		59.27		50.62		46.55		38.38		36.53		45.55
2006	39.26		38.12		41.94		47.20		53.53		60.65		65.65	a	62.55		60.63		50.24		43.66	a	40.40		50.32
2007	37.03		40.70		42.11		43.58		49.73		56.23		65.18	a	62.27		56.67	a	49.13		43.03		37.87		48.63
2008	36.35		39.93		39.34		41.08		51.18		53.02		59.97		59.97		55.17		46.22	a	44.75		29.65		46.38
2009	34.00		38.11		38.42		44.87		52.90		61.42	d	64.81	g	63.77		65.13		54.63		49.68		33.66		48.78	a
2010	39.27		43.12		44.26		44.85		48.61		53.77		61.42		62.11		56.67		49.63		39.83		38.56		48.51
2011	37.50		34.32		40.35		40.15		46.34		53.90		57.98		63.35		62.17		50.16		40.15		36.05		46.87
2012	37.94		40.29		39.56		46.92		51.19		53.88		59.74		62.16		57.45		50.73		44.52		38.77		48.60
2013	34.44		37.95		41.84		45.63		53.44		59.55		63.81		65.03		60.57		46.53		42.53		33.52		48.74
2014	39.89		34.73		43.42		47.42		55.66		57.02		66.05		66.31		61.57		55.08		42.55		40.32		50.83
2015	42.10		45.16		47.03		46.98		54.81		65.68		68.29		65.85		55.78		53.42		38.75		37.87		51.81
2016	39.52		44.17		44.82		53.48		56.39		60.12		63.45		64.89		56.20		50.52		48.12		33.06		51.23
2017	34.24		38.20		42.24		46.78		53.87		58.40		63.55		68.89		61.42		49.02	c	42.37		37.73		49.72
2018	41.69		36.00		41.74		46.63		56.03		57.83		66.03		66.15		57.43		49.34		44.63		39.50		50.25
2019	42.31		32.71		43.35		47.82		56.42		57.68		62.71		65.68		59.03		47.56		42.22		38.82		49.69
2020	39.42		39.83	c	40.39		47.65		55.74		56.73		63.11		64.15		62.82		51.52		43.19	a	41.03		50.46
2021	40.26		36.09		41.16		48.85		52.77		64.05		65.98		65.82		59.00		49.23		44.37		34.07	a	50.14
2022	39.56		38.16		43.55		42.83		49.97		58.67		67.08	e	68.33	d	61.83	d	56.15		39.60		35.23		50.08
2023	39.08	a	36.77		40.40		44.35		57.89		58.03		64.27		66.97		59.00		52.03		44.22		44.92		50.66
2024	39.52		42.43		44.05	a	47.16	e	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	43.29	h
Period of Record Statistics
MEAN	37.49		39.23		41.68		45.76		51.78		56.50		61.76		62.14		57.68		49.97		42.52		38.02		48.69
S.D.	3.91		3.32		2.84		2.66		2.88		2.87		2.78		2.71		2.84		2.51		3.18		3.12		1.49
SKEW	-0.74		0.30		-0.43		-0.25		-0.05		0.57		0.05		0.32		0.02		0.23		-0.35		-0.42		-0.42
MAX	44.79		46.86		48.93		53.48		57.89		65.68		68.29		68.89		65.13		56.15		50.18		44.92		51.81
MIN	23.13		32.30		31.14		38.78		43.53		51.10		56.09		56.87		50.62		45.13		32.36		29.65		44.71
YRS	82		84		85		85		85		85		84		84		84		84		81		81		71