MASON DAM, OR

Average of Maximum Temperature (Degrees Fahrenheit)

(355258)

File last updated on April 26, 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	47.90		58.47		68.87		73.30		82.16		83.81		74.80		55.74		49.40		37.71		63.22	b
1970	35.87		45.29		44.94		49.00		63.90		75.93		82.87		86.77		66.43		56.13		44.37		31.65		56.93
1971	36.60	a	42.21		43.35		55.70		67.52		69.17		82.77		87.39		66.87		57.71		43.90		33.43	a	57.22
1972	33.42		39.14		51.42		51.97		67.39		73.10		80.74		83.81		66.27		61.48		42.90	a	28.29		56.66
1973	31.84		42.07		48.42		57.13		68.55		73.67		85.50	e	82.84		71.20		59.48		41.07		38.27	a	58.34
1974	31.60	a	40.14		45.94		53.00		61.42		79.87		81.06		79.61	h	78.32	b	62.94		46.13		35.42		55.99	a
1975	34.58		37.14		43.35		47.67		61.77		69.97		83.77		76.06		75.80		55.16		43.30		37.58		55.51
1976	35.81		38.34		42.61		54.33		67.68		68.73		80.58		72.26		73.20		61.48		52.31	d	37.58		57.08
1977	28.94		45.07		44.59	b	64.23		58.03		77.30		81.00		82.45		69.13		60.16		42.47		38.13	a	57.63
1978	37.61		41.04		55.10		53.60		60.70	d	73.13		81.61		78.32		67.93		64.35		40.93		30.48		57.07
1979	24.06		38.89		49.43	a	54.00	d	68.96	f	75.23		84.13	a	80.57	a	76.70		62.53	a	42.93	a	39.14	j	58.85	b
1980	32.47	a	42.07	a	45.37	a	60.24	a	63.90		68.41	a	81.18	c	77.10	a	71.83	a	61.81		41.64	h	36.81		58.29	a
1981	38.06		40.96		48.69	b	56.60		61.45		69.73		80.39		86.06		73.74	c	55.65		45.30		36.45		57.76
1982	31.81		35.14		45.03		52.47		63.45		72.46	b	77.07	c	82.17	a	68.40		56.50	a	40.46	b	36.04	e	55.08
1983	39.54	c	41.81	a	48.15	d	54.00	b	66.72	b	71.31	a	75.74	d	81.80	a	71.71	b	62.53	a	43.72	a	26.78	d	56.99
1984	30.93	b	36.72		46.52	b	51.96	b	64.11	d	69.18	b	83.79	b	83.36	c	67.67	c	53.80	a	42.75	b	30.31	e	55.09
1985	29.55		33.89		43.61	c	61.47		66.36	c	76.64	b	88.00	a	79.48	b	64.04	b	57.43	a	33.91	g	25.00	a	56.86	a
1986	36.93	c	43.07	a	53.68	f	57.11	b	66.38	b	80.43	b	78.57	c	86.59	d	65.43	b	63.60	a	45.29	b	35.48	f	62.34	b
1987	31.40	f	43.52	a	48.40	f	65.50		68.90	a	77.58	d	80.03	b	80.97	b	78.64	b	68.93	c	46.46	b	33.90	b	64.44	b
1988	32.32	c	42.19	b	51.36	i	59.12	e	65.37	a	75.44	e	83.79	c	83.74	d	74.24	e	70.90	b	42.46	b	31.90	a	60.13	a
1989	31.04	c	32.54	d	46.91	h	61.07	c	64.36	c	76.00	c	83.89	d	76.41	b	72.33		58.15	d	46.74	c	37.88	e	58.22	a
1990	36.74	d	39.82	f	53.38	g	66.21	f	63.00	f	71.36	e	84.14	c	81.14	b	79.66	a	58.71		45.28	a	28.10	a	60.64	d
1991	32.73	a	47.77	b	46.97	a	54.31	a	61.20	a	68.10	a	84.21	b	85.56	d	77.62	a	62.71		40.45	a	36.80	a	58.20
1992	37.10	b	46.85	b	57.73	a	60.89	b	74.16		78.54	d	79.45	b	84.64	c	74.00		65.11	c	38.17	a	30.90		60.63
1993	28.97	a	34.30	a	45.17	a	53.86	a	71.32		68.93	a	70.79	c	77.43	c	74.64	b	61.55	b	41.82	b	34.73	a	55.29
1994	39.29	c	38.52	a	54.81		61.07		67.84		75.71	b	86.83	b	85.77	a	77.03	a	58.23	a	36.73		32.80	a	59.55
1995	35.39		45.21		46.87		53.90	a	63.45	b	69.28	a	79.87		78.19		75.50		56.87		45.00	c	35.90		57.12
1996	35.10	a	39.10		50.10	a	56.03		59.80	a	73.10	a	85.33	a	82.13	a	68.68	b	59.60	a	45.21	a	35.67	a	57.49
1997	35.67	a	40.89		49.60	a	54.34	a	68.84		71.23		78.52		82.61		73.83		58.77	a	47.30		34.53	a	58.01
1998	37.00		40.96	a	47.35		54.14	b	60.96	c	69.57		85.84		83.26		78.04	b	58.82	c	43.00		31.18	c	57.51
1999	36.60	a	38.12	b	45.65		53.36	b	64.83	g	69.64	b	81.50	a	82.97	a	74.38	a	64.57	c	50.36	e	32.93	c	57.28	a
2000	35.54	c	42.61	a	47.21	b	61.97		65.16		75.81	c	82.74		85.34	b	69.93		58.22	d	37.41	a	34.09	i	60.18	a
2001	30.42	e	37.21	d	49.91	i	50.75	j	68.19	j	71.00	h	79.40	k	86.69	o	76.05	j	59.55	k	45.32	b	30.41	b	35.84	h
2002	-----	z	36.75	l	46.93	p	56.53	k	62.77		72.23		84.06		76.73	a	72.97		57.55	b	44.23		36.70	a	63.41	d
2003	36.71	c	39.61		47.94		52.48	a	61.43	a	75.67		86.84		84.60	a	73.38	a	64.55		39.73		35.25	c	58.18
2004	31.87		38.21		53.39		60.14	a	60.93	a	72.57		82.13	a	79.60	a	68.31	a	59.58		44.13		33.30	a	57.01
2005	33.10	a	43.43		49.93	a	54.30		62.10	a	65.83	a	83.77		83.90		69.77		58.90		39.55	a	29.47	a	56.17
2006	33.86	c	38.43		44.39		55.07		66.10	a	77.24	m	88.65	e	81.71	c	74.25	b	60.20	a	43.00	a	32.94		56.24	a
2007	32.23		41.93		53.17	b	56.00		67.74		75.07		89.10		82.77		74.03		56.68		44.82	b	30.97		58.71
2008	29.29		39.52		43.19		50.40		62.26		70.40		83.03		83.06		74.03		61.65		46.37		32.63	a	56.32
2009	33.63	a	40.57		43.61		54.50		65.35		70.63		83.16		82.83	a	79.70		51.90		43.07		30.00	a	56.58
2010	36.58		40.71		49.13		52.67		56.03		68.07		80.68		80.57	a	73.53		61.17	a	43.29	b	33.90		56.36
2011	33.66	b	39.07	a	42.74		48.73		58.18	c	-----	z	83.56	v	86.03		79.50		60.74		40.57		34.81		52.40	b
2012	35.97		41.48		47.52		56.96	b	63.03		70.10		85.39		87.06		77.73		59.97		46.29	i	34.26		59.95	a
2013	27.65		42.11		49.23		57.40		66.16		73.93		89.42		85.97		73.32	b	59.29		43.43		30.82	c	58.23
2014	35.52		40.84	c	50.61		56.90		67.48		72.10		89.29		83.74		77.13		65.19		41.80		36.97		59.80
2015	36.83	b	46.84	c	57.50	a	58.23		66.90		82.27		83.68		85.81		75.53		68.55		41.00	a	32.10		61.27
2016	34.50	a	43.59		48.74		64.60		66.19		77.37		81.55		85.00		73.60		58.00		49.23		27.34	b	59.14
2017	28.23	e	40.19	a	49.57	a	52.80		66.23		74.34	a	89.13	a	86.84		75.50		57.65		43.50		31.85	k	60.36	a
Period of Record Statistics
MEAN	33.76		40.64		48.01		55.95		64.63		73.01		82.93		82.49		73.13		60.23		43.62		33.31		57.51
S.D.	3.35		3.34		3.86		4.15		3.64		3.72		3.69		3.42		4.05		3.85		3.19		3.37		1.51
SKEW	-0.61		-0.15		0.78		0.39		-0.01		0.40		-0.52		-0.83		-0.38		0.58		0.33		-0.43		0.56
MAX	39.54		47.77		57.73		65.50		74.16		82.27		89.42		87.39		79.70		70.90		52.31		38.27		61.27
MIN	24.06		32.54		42.61		47.67		56.03		65.83		70.79		72.26		64.04		51.90		36.73		25.00		55.08
YRS	46		46		42		46		45		46		47		47		48		48		46		45		31