MASON DAM, OR

Average of Average Temperature (Degrees Fahrenheit)

(355258)

File last updated on April 18, 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
1969	-----	z	-----	z	31.89		43.43		52.60		57.83		62.03		61.95		56.37		41.39		35.58		28.89		47.20	b
1970	26.48		32.43		33.37		36.98		48.90		60.30		64.06		63.73		49.31	a	41.16		34.82		21.08		42.72
1971	25.02	a	29.72	a	29.58		41.13		51.87		53.72		63.34		66.87	a	49.65		42.23		33.73		22.43	a	42.44
1972	21.93	a	26.39	a	38.26		39.57	a	51.26		57.38		62.47	a	64.35		50.47		44.92		34.76	a	19.97	a	42.64
1973	20.28	a	29.91		36.05		42.03		50.69		56.35		64.48	e	62.76		53.95		44.15		32.26	a	29.53	a	43.54
1974	20.03	a	27.43		33.65		40.57		46.95		60.63		62.58	a	59.17	h	54.66	e	43.37		33.68		23.85		40.67	a
1975	20.92		22.18		28.89		33.81	a	47.24		54.00		65.10		57.68		55.80		43.79		31.80		28.12	a	40.78
1976	23.61		25.55		29.13		40.50		50.56		53.15		63.06		58.58		56.44	d	45.55	b	40.79	d	26.48		42.78
1977	19.03		31.66		32.98	b	45.88		45.61		59.90		61.98		64.79		53.80		45.32		32.62		31.23	a	43.73
1978	29.18		32.64		41.48		42.13		47.63	d	56.50		63.61		60.84		53.07		46.65		31.07		19.98	a	43.73
1979	11.63		29.48		36.37	a	41.60	d	51.50	f	57.20		63.48	a	63.27	a	57.88		47.82	a	32.17	a	30.43	k	44.09	b
1980	23.18	a	33.29	a	34.95	a	45.48	a	50.18		53.76	a	62.89	c	58.28	a	55.78	a	46.37		32.57	h	28.20	a	44.76	a
1981	30.92		30.09		37.61	c	43.67		49.10		55.07		61.31		65.98		56.09	c	43.03		36.37		29.15		44.86
1982	21.63		22.70		33.95		38.75		47.76		57.68	b	61.29	c	63.88	b	53.77		44.52	a	30.52	b	28.23	e	42.06
1983	30.98	c	32.43	a	38.46	d	40.59	b	50.68	c	54.48	a	59.28	d	65.14	b	53.33	c	46.70	a	35.54	e	18.33	h	46.15	a
1984	21.54	d	24.16		35.59	b	39.98	b	48.69	d	54.00	c	63.95	b	65.05	c	51.58	d	41.47	a	32.78	c	18.23	g	43.52	a
1985	15.59	b	16.30		28.59	c	45.53		50.70	d	57.46	b	65.87	a	60.86	b	49.41	b	43.37	a	22.81	i	13.79	b	40.68	a
1986	24.31	e	33.22	a	40.66	f	42.70	b	50.79	b	62.23	b	59.26	d	67.25	e	50.77	b	46.93	a	36.00	b	26.38	f	47.35	b
1987	19.21	g	28.43	a	36.71	g	48.22		53.64	b	59.60	d	62.54	c	61.19	b	58.50	b	48.00	c	35.94	d	24.40	b	48.04	b
1988	21.41	d	25.35	e	35.34	i	44.46	e	50.25	a	58.40	f	64.20	c	63.13	e	54.82	e	52.12	b	34.48	d	21.03	b	43.13	b
1989	20.02	d	17.35	e	34.11	i	45.96	c	49.04	c	58.02	c	63.83	d	59.81	b	54.35		44.06	d	36.26	c	27.94	e	43.33	a
1990	27.33	d	25.52	f	38.62	g	49.33	f	47.86	f	54.98	e	64.82	c	63.75	c	60.50	a	45.03		35.28	a	17.91	c	46.20	d
1991	21.77	a	36.13	b	35.68	a	41.50	b	47.40	a	52.88	a	64.78	b	66.24	d	58.16	b	45.39		33.10	a	28.33	b	44.28
1992	27.00	d	36.02	b	42.62	a	46.41	c	55.35		61.46	e	61.95	b	64.88	c	55.71	a	48.32	c	30.25	b	21.29	c	45.94
1993	15.90	a	21.75	b	34.62	a	40.90	a	55.40		54.43	b	54.43	d	60.23	c	55.44	c	48.00	b	29.04	b	26.79	b	41.41
1994	29.45	c	26.48	c	39.12	a	46.98		53.50		58.11	b	66.83	b	65.57	a	58.52	a	44.30	a	28.37		22.37	a	44.96
1995	26.85		35.67	j	35.47		41.80	b	49.54	c	55.21	a	63.26		59.98		57.50		42.90		36.29	d	28.43	a	45.20	a
1996	25.60	a	25.45	a	37.45	b	43.28		46.65	a	56.59	a	65.52	a	63.10	a	52.29	b	45.08	a	35.69	a	26.80	a	43.62
1997	25.48	a	28.82		36.65	a	41.79	b	53.42		56.12		62.24		64.69		57.68		44.09	b	37.33		25.03	a	44.45
1998	26.97		29.56	b	34.85		42.21	b	49.50	c	55.62		67.98		64.97		61.43	c	44.11	c	35.77	b	23.48	d	44.70
1999	26.10	a	24.75	b	32.61		39.32	b	48.38	g	54.10	e	61.05	b	64.98	a	55.07	a	47.36	c	40.66	e	24.86	c	42.81	a
2000	25.11	c	31.59	a	34.36	b	45.78	a	50.68		58.06	d	63.76		64.78	b	54.00		44.83	d	28.17	a	24.85	k	45.56	a
2001	19.23	e	26.38	d	36.91	i	38.83	j	50.33	j	54.86	h	63.50	k	67.06	o	58.90	j	44.88	k	35.21	b	22.10	b	25.73	h
2002	-----	z	22.94	l	34.73	p	43.11	k	49.37		58.18		66.35		59.27	a	55.50		42.48	b	33.20		30.05	a	49.30	d
2003	31.14	c	29.21		38.03		41.60	a	48.68	a	58.58		67.82		66.25	a	56.72	a	49.13		30.87		29.20	c	45.60
2004	23.39		27.24		39.79		46.12	a	49.72	a	57.75		64.52	a	64.23	a	54.00	a	46.27		35.43		28.05	a	44.71
2005	26.13	a	30.09		38.77	a	42.35		50.78	a	52.78	a	65.15		65.00		53.55		46.18		32.34	a	20.48	a	43.63
2006	25.57	c	25.23		33.92		42.88		50.95	a	61.35	m	69.08	e	63.09	c	56.64	b	45.23	a	34.72	a	23.82		42.83	a
2007	20.56		32.27		39.84	b	42.73		51.44		58.43		69.82		63.63		55.75		43.44		33.91	b	22.77		44.55
2008	19.07	b	27.81		31.02		37.79	a	49.27		54.68		64.24		64.15		56.00		47.02		37.42		25.02	a	42.79
2009	23.55	a	27.36		32.36	b	41.25		50.06		56.77		64.74		64.80	a	60.38		41.44		33.67		21.48	a	43.16
2010	29.50		32.21		36.13		40.17		44.35		54.72		62.48		62.93	a	57.20		47.98	b	35.70	c	27.58		44.25
2011	24.97	b	28.71	b	33.74		38.10		44.89	c	-----	z	63.72	v	66.63		60.50		47.42		32.02		26.03		40.30	b
2012	26.61		29.84		36.84		43.91	b	48.27		55.00		67.10		66.56		58.73		45.79		38.57	i	26.66		45.94	a
2013	16.56		29.80		36.44		43.38		51.03		57.97		68.81		67.61		58.82	b	44.53		34.37		21.56	d	44.24
2014	25.60		31.88	c	38.87		43.48		51.53		56.22		69.71		66.23		59.23		50.08		34.69	c	30.77		46.52
2015	29.17	b	36.78	c	42.62	a	42.95		52.79		64.22		66.23		66.37		57.12		52.10	a	32.39	b	23.79		47.21
2016	24.52	a	31.12		38.37		49.10		51.82		59.53		63.42		64.87		55.68		46.69		39.73		16.74	d	45.13
2017	16.54	f	30.89	a	39.25	a	41.52		51.00		58.38	a	68.92	a	67.61		58.72		44.55		36.05		24.32	k	49.69	b
Period of Record Statistics
MEAN	23.80		28.62		35.72		42.40		50.03		56.89		64.16		63.78		55.64		45.47		34.19		24.78		43.94
S.D.	4.38		4.38		3.53		2.99		2.44		2.61		2.93		2.57		2.98		2.53		2.81		4.01		1.47
SKEW	-0.48		-0.67		-0.16		-0.17		-0.09		0.55		-0.38		-0.71		-0.30		0.56		0.07		-0.54		0.04
MAX	31.14		36.78		42.62		49.10		55.40		64.22		69.82		67.61		61.43		52.12		40.79		31.23		47.21
MIN	11.63		16.30		28.59		33.81		44.35		52.78		54.43		57.68		49.31		41.16		28.17		13.79		40.78
YRS	45		45		42		46		45		45		47		47		48		48		46		43		28