SILVERTON, OR

Average of Minimum Temperature (Degrees Fahrenheit)

(357823)

File last updated on April 24, 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
1962	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	51.50		44.32		40.20		35.29		42.83	h
1963	26.97		40.07		36.35		39.13		45.16		50.03		51.03		53.74		53.03		45.71		40.10		32.45		42.82
1964	35.90		31.79		35.45		38.20		41.84		48.34	a	52.77		52.06		47.23		43.42		35.43		32.94		41.28
1965	34.55		35.29		35.19		41.17		41.90		47.00		52.55		54.32		46.17		45.45		40.60		30.97		42.10
1966	33.23		32.79		35.16		41.00		43.58		49.30		52.35		52.45		50.20		42.77		40.23		39.39		42.70
1967	38.39		34.61		35.94		36.27		43.65		52.23		53.10		56.68		51.10		44.19		38.03		35.06		43.27
1968	33.65		38.79		38.71		37.73		44.42		49.73		53.58		54.00		49.57		41.71		38.57		31.74		42.68
1969	27.61		32.89		35.10		39.53		46.77		54.10		51.84		50.68		50.27		40.87		38.20		35.81		41.97
1970	34.39		36.57		37.19		37.70		42.94		51.67		51.90		50.77		46.27		41.32		37.50		33.32		41.80
1971	33.39		32.96		34.19		37.50		44.00		47.43		52.97		54.65		46.97		39.90		36.63		32.74		41.11
1972	31.87		35.17		39.29		36.80		45.53	a	49.87		54.77		54.61		47.30		40.65		39.40		29.32		42.05
1973	30.65		34.64		38.06		40.27		45.52		50.87		53.45		49.35		50.03		42.97		37.63		37.19		42.55
1974	29.06		35.32		37.10		40.13		43.87		50.37		53.58		53.74		51.40		41.13		39.20		36.00		42.58
1975	35.06		32.56	a	35.84		37.13		45.48		49.33		54.84		52.13		50.53		45.45		37.07		35.71		42.59
1976	34.61		33.38		34.13		38.20		43.29		47.63		52.23		53.23		50.80		41.61		38.23		31.39		41.56
1977	28.00		34.43		35.00		40.10		42.32		49.40		52.35		57.48		49.83		43.48		37.13		37.23	a	42.23
1978	36.87		39.07		40.10		40.50		44.29		52.47		54.87		54.45		51.52	a	43.87		31.83		28.68		43.21
1979	23.16		35.43		39.52		42.33		46.16		50.13		54.52		53.45		52.57		47.00		34.97		37.00		43.02
1980	27.97		35.59		37.74		41.60		45.74		48.80		53.42		49.68		48.97	a	42.42		39.43		35.26		42.22
1981	34.16		35.14		38.13		42.03		46.16		49.30		53.10		55.65		50.27		42.29		39.27		36.10		43.47
1982	32.87	a	34.25		36.26		36.03		43.16		51.76	a	52.45		52.74		49.72	a	43.72	b	33.90	a	33.93	b	41.73
1983	35.15	d	39.33	a	41.26		39.70		46.84		50.43		53.45		55.61		48.53		42.73	a	41.17		30.23	a	43.70
1984	35.03		37.11	a	40.39		39.30		44.23	a	47.73		52.16		53.57	a	50.10		44.10		38.83		31.32		42.82
1985	27.55		-----	z	35.52		42.30		45.29		49.73		56.26		52.74		48.37		43.21	b	30.93	b	26.73	a	41.69	a
1986	36.59	b	37.93	a	42.60	a	40.47		47.17	b	54.30		53.03	a	56.81		49.48	a	45.55	b	40.86	b	33.00	a	44.82
1987	33.45		-----	z	40.13		43.33		48.23		52.07		54.26		54.93	a	51.46	b	45.03		41.67		34.57	a	45.38	a
1988	33.21	c	35.64	a	38.27	a	42.97	a	45.74		49.79	a	54.77		53.68		49.97		48.77		42.33		34.17	a	44.11
1989	36.14	b	28.82		38.90		44.90	a	46.13	a	52.70		53.87	a	54.53	a	50.67		44.16		40.52	c	32.30	a	43.64
1990	37.06		34.15	b	-----	z	44.00		46.23		52.37		56.53	a	57.46	c	54.83		43.55	b	41.70	c	28.42		45.12	a
1991	33.10		40.74	a	37.40	a	41.79	a	45.32		49.24	a	55.21	b	55.83	b	51.90	a	43.83	b	41.68	e	34.96	f	45.09	a
1992	38.12	g	38.96	d	41.20	a	43.92	e	48.67	d	53.89	c	56.87	a	54.87	a	50.86	a	47.10		39.86	b	33.94		46.37	a
1993	29.61		31.39		40.77		43.72	a	49.77		51.30		53.35		55.36	c	49.32	b	45.74		31.03		33.57	a	42.91
1994	36.50	a	34.31	b	39.52		43.41	a	47.00	a	49.17		54.61	c	54.37	a	53.73		42.26		34.57		36.17	a	43.80
1995	36.62	b	39.54	b	37.57	a	40.10		47.35		51.30		56.39		52.87	a	54.37		44.48		44.90		36.16		45.14
1996	37.06		32.89	a	39.26		43.67		44.42		48.83		56.35		55.19		48.77		44.65		39.53		36.00		43.89
1997	35.10		35.00	a	39.55		40.77		50.16		51.03		54.42		56.65		51.97	a	44.74		41.93		33.65		44.58
1998	38.23	a	38.63	a	40.00		41.73		47.30	a	51.13		56.90		55.71		52.50		44.19		41.90	a	34.32		45.21
1999	36.23		37.71		37.06		39.40		43.48		49.93		52.74		56.23		48.77		43.53	a	42.70		36.03	a	43.65
2000	33.52		36.90		36.80	a	42.48	a	46.55		51.21	a	53.42		52.84		51.43		43.94		33.03		34.43	a	43.05
2001	33.52	b	33.71		39.39		40.13		45.42		49.10	a	53.81		55.10	a	51.80		43.60	a	41.93		35.77		43.61
2002	36.16		35.36		35.97		41.93		44.23	a	52.00		55.33	a	54.67	a	51.11	b	43.29		40.17		37.19		43.95
2003	38.93	a	35.75		42.10		40.70		46.06		53.07	a	55.41	b	56.03		52.72	a	49.35		36.21	a	36.90	a	45.27
2004	34.23	a	37.14		39.87		42.83	a	48.74		52.60		56.71		57.58		51.50	b	47.10	a	37.97		37.10	a	45.28
2005	34.59	b	32.41	a	40.10	b	43.27		50.10	a	50.43		56.33	a	55.39		49.50		46.97		35.69	a	33.58		44.03
2006	39.81		32.82		37.19		41.10	a	-----	z	53.77		56.17	a	53.80	a	50.60		41.87		40.60		32.53	a	43.66	a
2007	30.60	a	37.32		40.48		40.23		45.16		50.60		57.29		55.61		49.97	a	44.20	a	35.66	a	34.87		43.50
2008	30.57	a	35.64	a	35.42		37.83		47.06		48.23		54.73	a	55.90	a	49.97		43.06		41.00		31.53	a	42.58
2009	32.97		33.11		36.32		39.97		45.10		53.33		57.48		56.06		52.73		44.13		40.03		30.00		43.44
2010	40.39		38.89		38.45		40.00		44.23		49.93		53.65		54.32		53.50		45.97		39.60		38.32		44.77
2011	35.29		33.32		38.45		38.00		43.42		50.23		53.42		55.68		53.50		46.52		36.77		31.26		42.99
2012	33.84		35.48		35.26		42.37		44.94		49.83		54.32		55.42		50.97		45.32		41.60		37.29		43.89
2013	31.03		37.04		38.39		42.37		47.90		52.33		54.58		57.71		54.20		40.55		38.10		28.42		43.55
2014	33.26		34.14		39.00		42.20		49.06		51.20		57.61		57.87		53.23		50.29		39.47		37.97		45.44
2015	35.77		40.18		40.00		40.27		48.61		54.40		57.81		56.97		49.97		48.35		36.63		37.55		45.54
2016	36.97		40.28		40.00		44.70		48.74		52.10		55.26		55.74		50.30		47.45		44.57		30.81		45.58
2017	28.13		35.25		40.45		41.03		47.77		52.90		54.71		58.19		54.60		43.77		40.80		32.61		44.19
2018	38.90		35.00		36.29		41.90		49.39		51.77		57.19		56.39		49.77		44.74		38.53		36.10		44.66
2019	34.74		30.79		33.48		43.80		47.94		51.93		56.68		57.52		53.53		39.52		36.70		36.19		43.57
2020	40.16		34.24		35.55		41.80		47.90		52.80		56.06		55.68		55.45	s	44.94		36.43	i	33.42	g	45.46	c
2021	33.64	f	33.10	r	35.65		41.17		46.71		56.27		57.03		57.13		55.07		61.52		42.05	i	31.03		49.06	c
2022	31.16		26.77	o	-----	z	38.33	l	44.74		51.63		57.68		57.19		53.80		48.29		33.03		33.81		45.70	c
2023	35.06		32.14		33.48		41.17		50.39		50.77		56.68		59.74		53.17		47.06		39.03		39.23		44.83
2024	35.87		37.97		38.87		41.90	t	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	37.57	i
Period of Record Statistics
MEAN	33.91		35.48		37.85		40.83		45.99		50.94		54.63		54.93		50.95		44.58		38.61		34.04		43.44
S.D.	3.56		2.66		2.25		2.16		2.16		1.92		1.78		2.09		2.11		3.18		3.08		2.89		1.17
SKEW	-0.63		0.09		-0.04		-0.29		0.18		0.25		0.12		-0.48		-0.10		2.47		-0.59		-0.39		0.09
MAX	40.39		40.74		42.60		44.90		50.39		56.27		57.81		59.74		55.07		61.52		44.90		39.39		45.58
MIN	23.16		28.82		33.48		36.03		41.84		47.00		51.03		49.35		46.17		39.52		30.93		26.73		41.11
YRS	60		58		60		60		60		61		61		61		61		62		60		60		52