PELTON DAM, OR

Average of Minimum Temperature (Degrees Fahrenheit)

(356532)

File last updated on April 16, 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
1958	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	54.71	g	43.07	o	35.97	a	32.13		32.19		33.43	i
1959	29.13		30.71		31.55		37.20		38.26		48.43		52.29		48.58		46.33		36.90		26.67		25.45		37.63
1960	18.77		27.72		31.87		37.03		39.26		46.90		51.81		48.71		43.37		35.84		30.65	d	26.39		36.53
1961	31.77		34.46		34.74		35.40		41.45		49.93		51.10		54.00		41.70		34.84		26.37		27.87		38.64
1962	21.13		28.68		30.94		36.53		40.32		44.50		48.68		49.16		43.63		36.74		34.30		28.84		36.95
1963	17.61		32.46		29.97		34.77		41.06		45.70		48.71		48.68		48.50		37.55		33.53		26.32		37.07
1964	28.23		22.55		27.35		31.60		38.61		47.76	a	51.61		49.26		41.50		35.74		31.83	a	26.30	a	36.03
1965	31.10		29.50		27.13		37.30		38.32		46.67		50.84		50.61		-----	z	36.00	k	35.97		27.23		37.47	b
1966	28.10		28.46		29.81		33.47		41.10		46.40		51.42		49.87		46.63		36.87		35.13		31.77		38.25
1967	31.68		29.07		30.03		32.53		39.61		47.93		50.90		52.32		46.90		39.32		33.20		25.30	a	38.23
1968	26.52		32.00		33.84		33.30		41.68		46.97		52.23		52.00		44.83		36.16		32.73		26.00		38.19
1969	17.19		26.96		28.00		33.87		42.61		50.47		48.87		47.23		45.53		33.03		30.97		28.65		36.11
1970	26.55		30.29		30.58		31.47		38.87		49.00		50.71		48.10		40.27		33.13		31.70		27.90		36.55
1971	28.29		26.82		27.68		32.57		41.97		44.50		50.90		53.03		41.80		33.52		30.50		27.71		36.61
1972	24.81		27.90		33.32		32.17		41.77		47.83		51.42		50.74		41.00		34.03		34.20		19.16		36.53
1973	23.68		30.00		28.90		33.87		41.81		47.90		50.42		47.93	a	44.83		37.74		33.80		33.16		37.84
1974	21.52		29.21		32.23		35.13		38.81		48.30		51.66	b	50.84		42.70		34.00		33.77		28.94		37.26
1975	29.16		25.93		28.84		30.40		38.61		44.97		53.81		48.23		42.63		39.84		30.90		31.26		37.05
1976	27.45		27.21		27.90		33.77		39.52		42.43		51.84		51.97		47.13		34.32		34.79	a	21.90		36.69
1977	20.65		28.39		28.42		34.97		39.26		48.63		50.58		54.90		45.17		37.32		28.83		31.42		37.38
1978	28.81		32.61		33.48		36.00		38.35		47.17		50.42		50.90		44.20		34.71		23.57		21.29		36.79
1979	9.27	a	29.11		32.45		36.43		40.58		46.47		50.90		51.65		45.63		41.03		32.76	a	30.00		37.19
1980	23.57	a	31.00		-----	z	36.30		40.74		45.37		51.61		-----	z	45.20		36.42		33.90		30.29		37.44	b
1981	31.94		29.64		31.90		34.67		41.58		46.60		49.19		50.39		44.47		35.63	a	32.13		30.32		38.21
1982	24.50	a	27.71		30.26		31.37		38.48		48.69	a	51.71		50.71		45.17		37.06		28.37		28.10		36.84
1983	30.06		34.11		36.03		33.63		40.03		45.00		48.60	a	51.94		40.03		37.19		35.24	a	21.23		37.76
1984	24.93	a	31.14	a	34.52		34.83		39.39		44.10		49.97		51.06		43.23		34.61		32.90		23.55		37.02
1985	24.57	a	24.18		27.81		34.93		39.52		45.90		53.35		48.45		40.83	a	35.42		20.57		16.97	a	34.37
1986	29.19		30.71		35.61		31.43		40.77		48.43		47.68		51.35		41.70		34.87		34.03		28.23	a	37.84
1987	24.97		29.82		33.71		36.80		42.81		47.21	a	51.24	b	48.32		43.80		34.90		31.73		27.26		37.71
1988	24.43	a	25.50	a	28.55		37.77		39.94		46.57		49.58		45.97		40.33		40.57	a	33.00		25.35		36.46
1989	28.68	c	17.18		32.13		37.37		39.97		46.77		47.70	a	48.16		40.45	a	36.48		31.31	a	24.52		35.89
1990	31.63	a	25.96		30.37	a	38.03		39.94		48.37		52.90		53.26		46.67		37.06		32.80		17.58		37.88
1991	23.26		32.61		30.35		34.43		39.87		45.67		51.23	a	54.19		43.70	c	34.94		34.53		30.16		37.91
1992	30.77		34.18	a	32.03		38.10		43.52		49.90		51.55		49.97		44.87		38.35		32.93		23.94		39.18
1993	18.03	a	21.82		31.90		35.57		44.00		46.77		47.39		47.61		40.53		37.94		19.27		28.42		34.94
1994	27.23		25.07		30.03		37.40		43.06		46.30		50.26		48.55		46.37		35.52		28.93		27.87	a	37.22
1995	29.10		31.75		29.87		33.40		39.87		45.87		50.90		46.42		45.07	a	33.68		35.73		28.87	a	37.54
1996	28.43	a	24.89	a	31.10		35.93		37.90		43.53		49.23		48.35		39.47		35.13		27.70		25.27	a	35.58
1997	22.71		25.82		32.48		33.80		42.65		44.07		48.81		52.17	b	47.47		35.52		33.48	a	24.23	a	36.93
1998	28.16		32.68		32.97		34.50		42.32		46.83		54.35		50.26		-----	z	35.26		35.33		27.13		38.16	a
1999	29.71		31.21		30.74		31.21	b	37.17	a	44.71	b	48.29		53.19		39.27		34.48		36.77		30.13		37.24
2000	26.19		32.28		29.19		36.03		42.55		46.47		50.19		47.77		44.97		37.39		28.27		26.70	a	37.33
2001	27.06		26.61		30.00		31.83	a	40.39		44.33		49.16		51.45		45.00		36.42		33.14	a	28.93	a	37.03
2002	29.81		26.89		26.77		35.73		39.58		46.97		55.17	a	51.10		46.27		33.13		28.60		31.74		37.65
2003	35.27	a	28.36		36.48		35.24	a	43.13		51.31	a	56.23		55.65		48.93		43.39		31.23		30.65		41.32
2004	25.13	a	30.69		35.29		36.73		43.00		50.83		55.71		56.87		48.00		40.90	a	31.62	a	30.34	b	40.43
2005	27.57	a	26.11		33.94		38.63		47.06		45.97	a	54.16		53.13	a	43.97		38.93	a	31.10		21.13		38.47
2006	30.58		23.96		30.48		36.24	a	42.65		50.43		54.68		51.26		43.86	a	34.10		32.47		26.00		38.06
2007	22.70	a	28.61		32.19		33.23		42.32		48.27		57.81		51.47	a	44.71	b	36.57	a	29.93	b	29.10		38.08
2008	22.14	b	28.64	d	27.47	a	30.67		43.68		45.69	a	53.81		54.06		44.63		36.32		34.07		19.43	a	36.72
2009	25.26		27.64		29.71		33.87		42.23		50.14	a	55.42		54.19		47.52	a	34.87		30.00		22.42		37.77
2010	32.62	b	30.50		29.74		33.76	a	40.73	a	46.17		52.84		51.35		47.41	a	38.42		31.00	a	27.48		38.50
2011	26.84		25.89	a	32.77		32.97		39.10		46.24	a	49.48		52.52		47.77		38.13		28.33		21.35		36.78
2012	26.87		27.66		31.23		37.07		41.32		48.30		54.39		52.35		45.23		37.23		34.40		28.94		38.75
2013	21.16		25.32		31.26		35.77		43.65		49.53		54.74		56.45		49.53		33.87		28.37		19.42		37.42
2014	25.58		24.82		32.29		36.21	a	43.87		48.13		57.32		55.52		48.83		42.52		26.77		29.29		39.26
2015	29.97		32.57		33.39		34.50		45.00		54.63		56.29		54.90		44.63		41.00		28.57		28.65		40.34
2016	27.10		30.38		33.19		39.63		45.42		51.39	b	52.81		52.81		44.87		40.81		36.27		18.73	a	39.45
2017	16.23		27.64		33.40	a	35.07		43.31	b	50.31	a	55.32		55.31	b	48.17		34.80	a	32.89	b	23.90		38.03
2018	30.00		25.57		29.71		37.33		47.13		49.60		55.61		54.26		43.93		36.13		27.71	b	26.80	a	38.65
2019	27.64	c	22.70	a	24.08	g	38.53		44.55	i	48.25	b	53.19		54.64	f	47.88	e	31.04	g	27.41	m	27.07	a	37.90	e
2020	30.96	d	26.82	g	28.67	d	35.75	b	43.50	e	50.22	c	53.74	d	53.87	a	48.22	c	39.17	h	30.07	c	26.84	f	41.67	c
2021	27.39	h	23.89	i	30.19	e	34.16	k	42.48	f	54.75	b	57.90		54.77		47.03		37.65		33.21	a	27.74		42.91	d
2022	25.00	b	23.54	b	33.50	a	32.90	a	40.63	a	50.00	a	56.45		58.03	b	47.93	a	39.70	a	26.67		21.24	b	37.97
2023	24.45	b	23.11		27.47	a	35.14	b	47.10	b	50.50	b	56.07	a	57.48	b	48.23	d	39.13	a	32.70	c	31.45	b	39.40
2024	25.29		29.32	a	30.57	a	34.27	o	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	28.39	i
Period of Record Statistics
MEAN	26.13		28.22		31.10		34.91		41.31		47.60		52.08		51.52		44.77		36.68		31.33		26.51		37.58
S.D.	4.56		3.38		2.38		2.16		2.30		2.43		2.69		2.85		2.67		2.39		3.47		3.90		1.25
SKEW	-1.02		-0.48		0.19		-0.13		0.62		0.58		0.35		0.22		-0.30		0.74		-1.21		-0.66		0.39
MAX	35.27		34.46		36.48		39.63		47.13		54.75		57.90		58.03		49.53		43.39		36.77		33.16		41.32
MIN	9.27		17.18		26.77		30.40		37.17		42.43		47.39		45.97		39.27		33.03		19.27		16.97		34.37
YRS	65		64		64		64		63		65		65		63		63		63		65		65		59