CORVALLIS STATE UNIVERSITY, OR

Average of Minimum Temperature (Degrees Fahrenheit)

(351862)

File last updated on April 15, 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
1893	26.55	b	31.79		35.35		37.33		42.26		43.72	e	46.48	b	46.71		46.40		37.87		34.67		35.73	a	38.74
1894	34.55		30.89		35.32		39.07		42.17	a	47.90		48.52		50.45		47.30		40.29		37.57		32.06		40.51
1895	31.21	b	33.89		32.94		37.97		43.16		46.23		-----	z	47.16		42.43		38.45		32.80		33.58		38.17	a
1896	34.45		36.69		33.81		37.13		41.23		45.40		49.84		52.77		42.59	a	38.61		30.72	a	37.42		40.06
1897	32.73	a	35.50		-----	z	41.93		47.03	a	49.83	a	48.29		53.13		47.07	c	41.19		39.07	a	38.68		43.13	a
1898	34.55		39.41	a	34.55		41.10	a	43.42		-----	z	49.48		52.48		48.10		39.68		35.60		30.20	a	40.78	a
1899	36.52		29.59	a	34.06		38.00		43.94		45.57		48.81		49.16		47.00		40.68		44.33		35.19		41.07
1900	35.32		34.59	a	40.87		40.30		44.32		49.67		49.48		45.77		45.20		41.59	d	42.55	a	38.97		42.39
1901	32.41	b	34.36		36.36	f	39.55	a	45.23		46.60		47.68		50.45		44.97		45.83	a	40.30		34.35		41.98	a
1902	30.48		39.18		37.48		38.93		45.81		47.13		50.45		50.10		44.93	a	42.06		38.07		34.77		41.62
1903	34.38	b	29.79		34.35		37.27		43.90		49.90		48.61		49.81		46.00		41.58		39.03	a	33.23		40.65
1904	35.00		34.86	a	36.71		41.97		42.94		46.38	a	51.06		49.37	a	45.97		42.48		41.31	a	35.97	b	42.00
1905	34.40	a	33.46		41.03		40.90		44.45		48.67		52.81		49.30	a	48.73		40.61		33.23		34.18	c	41.81
1906	38.42		35.71		35.39		40.33		44.03		46.00		54.00		49.87	a	47.83	a	42.81		38.80		37.16		42.53
1907	29.56	f	38.89		36.45		39.97		43.74		48.70		50.58	e	51.23		47.10		45.71		36.67		38.35		43.40	a
1908	35.84		34.52		36.45		38.70		40.81		46.67		53.97		49.52		44.60		40.47	a	39.86	a	32.47	a	41.15
1909	29.55	b	38.30	a	37.32		37.31	a	40.39		47.33		50.19		47.03		47.37		43.87		36.87		-----	z	41.41	a
1910	32.91	t	33.33	a	38.65		39.27		45.39		46.57		50.42		47.61		45.53		43.77		38.13		35.13		42.16	a
1911	29.39		29.96		34.10		34.73		40.23		44.20		54.61		55.45		43.70		40.13		36.37		33.90		39.73
1912	36.45		39.45		34.39		37.87	g	44.39		49.70		52.26		50.10		-----	z	36.70	a	37.41	h	35.59	d	42.11	c
1913	33.10		30.29		36.60	a	38.41	a	41.71		47.83		50.10	a	51.00		44.13		42.20	f	39.68	b	34.97		40.71	a
1914	39.29		35.00	a	40.48	b	42.20		44.60	a	46.93		51.16		49.27	i	47.45	a	46.00		38.03		28.48		41.78	a
1915	32.58		36.89		39.84		40.80		44.94		53.87		59.29		65.82	c	50.13		40.13		37.97		36.00		44.85
1916	26.45		36.45		38.23		38.79	a	41.58		46.40		50.97		53.87	a	46.97		35.03		32.87		32.68		40.02
1917	31.30	a	33.57		32.32		39.10		43.48		44.11	b	49.68		49.94		48.77		39.84	f	37.65	d	41.61		41.05	a
1918	39.68		34.39		35.84		35.93		40.65		48.20		48.22	h	50.22	d	48.83		42.81		36.20		33.00		40.52	a
1919	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z
1920	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z
1921	34.52		38.14		38.10		38.53		43.35		49.53		46.94		48.97		43.63		43.29		40.47		31.81		41.44
1922	28.03		31.25		33.87		34.97		42.61		46.13		47.61		49.13		45.97		43.10		31.90		31.23		38.82
1923	34.29		28.61		32.03		39.10		43.65		47.97		52.84		52.58		47.90		42.23		37.48	a	33.55		41.02
1924	30.03		38.97		34.68		37.67		42.84		47.47		48.64	f	50.26		44.93		42.35		36.90	a	27.24	b	39.39	a
1925	38.40	a	39.36		35.97		41.67		45.55		47.70		50.26		48.71		47.27		38.65		38.07		36.84		42.37
1926	33.26		39.61		37.16		42.23		44.06		47.27		48.10		50.10		45.20		43.84		39.93		34.39		42.10
1927	33.00		34.86		34.26		36.23		41.35		47.97		49.97		49.26		49.40		43.26		42.67		31.10		41.11
1928	33.94		34.48		41.45		39.90		44.61		50.93		53.61		51.81		47.13		44.57	a	39.67		34.07	a	43.01
1929	30.00		29.54		38.42		38.20		44.52		50.30		52.71		53.10		49.10		44.60	a	33.43		38.55		41.87
1930	22.90		38.50		39.42		44.72	a	42.52		48.67		51.32		54.39		50.67		41.73	a	36.50		33.68		42.08
1931	36.97		34.54		39.84		43.30		47.58		50.57		53.81		52.61		50.07		44.81		37.18	b	35.29		43.88
1932	34.26		35.52		40.80	a	40.97		45.52		51.07		51.39		55.19		48.57		46.23		41.47		30.94		43.49
1933	33.87		32.00		38.19		39.60		43.71		50.33		52.48		53.61		48.60		38.45		37.47		42.35		42.56
1934	40.81		39.29		44.03		44.90		48.26		50.37		53.06		53.03		48.17		46.94		44.23		37.13		45.85
1935	32.68		36.25		35.26		41.20		42.16		50.50		52.48		52.97		51.30		42.61		35.27		34.26		42.24
1936	38.06		31.10		36.42		43.60		49.03		53.13		54.52		53.84		48.80		43.74		32.60		37.87		43.56
1937	25.60	a	35.14		40.81		40.10		45.94		53.27		54.71		52.16		51.47		47.65		43.97		37.74		44.05
1938	34.97		35.79		37.94		42.83		46.26		50.57		54.52		51.19		53.23		45.74		35.80		36.03		43.74
1939	36.68		34.14		38.74		42.53		46.03		48.87		53.30	a	53.65		51.13		45.90		40.69	a	40.17	a	44.32
1940	34.81		40.00		41.84		42.87		47.55		50.73		54.10		54.10		53.93		49.61		37.07		37.74		45.36
1941	37.19		37.64		40.65		41.97		46.29		51.23		56.19		55.16		50.43		44.77		40.63		38.03		45.02
1942	30.68		33.71		36.26		42.33		46.10		50.03		55.26		53.77		48.33		43.52		39.53		39.03		43.21
1943	29.00		36.00		37.32		42.30		43.71		48.60		51.77		51.65		50.60		46.16		38.17		32.52		42.32
1944	32.48		35.52		35.81		40.37		43.61		48.13		52.06		51.71		50.03		46.48		36.50		30.68		41.95
1945	34.58		37.50		36.42		39.66	a	46.65		49.23		51.77		50.58		46.87		41.06		40.00		35.42		42.48
1946	34.00		35.50		37.10		39.30		45.13		46.80		51.48		51.55		46.10		40.32		35.20		35.23	a	41.48
1947	30.52		35.71		39.48		41.60		45.77		49.30		50.97		49.94		48.63		46.13		39.10	a	35.48		42.72
1948	31.10		33.69		35.55		38.33		44.90		52.17		51.29		51.81		47.30		41.81		37.13		31.00		41.34
1949	-----	z	33.54		39.68		41.70		46.58		49.20		50.94		51.97		50.37		38.68		41.20		35.29		43.56	a
1950	25.87		34.22	a	37.55		39.24	a	42.58		50.07		52.39		52.03		48.60		46.10		40.53		42.52		42.64
1951	34.55		36.89		33.97		39.23		44.61		48.47		50.52		49.55		48.27		44.94		39.50		33.55		42.00
1952	33.90		35.90		37.77		40.50		43.90	a	46.43		49.65		48.61		46.53		41.61		30.50		34.19		40.79
1953	41.03		35.07		35.58		39.43		43.65		46.87		49.32		52.29		49.80		41.19		39.77		35.81		42.48
1954	33.03		32.64		31.71		38.47		43.42		47.37		49.39		50.13		46.23		38.61		40.97	a	32.74		40.39
1955	32.17	a	31.11		32.84		35.62	a	39.94		47.13		48.68		47.07	a	45.53		43.03		36.03	a	34.90		39.50
1956	35.35		30.21		35.68		38.97		46.03		46.60		50.84		50.61		47.13		40.77		32.67		33.84		40.73
1957	25.67	a	34.50		39.52		40.77		47.48		49.53		49.13		48.35		48.80		42.32		31.20		36.71		41.17
1958	34.74		41.18		34.58		40.87		46.68		53.57		54.45		52.71		48.57		41.45		38.87		38.23		43.82
1959	35.90		33.57		35.81		39.07		42.71		49.03		51.39		49.23		47.83		43.94		34.13		33.45		41.34
1960	29.74		34.45		35.77		39.48	a	42.68		47.87		49.16		49.16		46.90		41.68		37.17		31.77		40.49
1961	36.06		39.18		38.16		40.20		44.87		49.57		50.94		52.58		45.13		40.58		33.53		35.13		42.16
1962	29.45		33.79		35.19		40.60		42.39		45.50		48.68		50.03		48.50		43.48		39.33		35.90		41.07
1963	26.71		38.96		35.52		38.90		43.81		48.07		50.03		51.61		51.10		43.03		39.70		32.23		41.64
1964	34.65		31.90		34.94		37.83		40.29		47.50		50.68		50.39		43.87		40.74		35.63		34.81		40.27
1965	35.03		35.93		35.87		40.73		40.81		46.20		50.48		53.13		46.10		43.77		41.43		32.65		41.84
1966	34.19		32.57		36.58		39.27		42.16		48.27		50.90		50.71		49.73		40.90		39.67		38.52		41.96
1967	37.52		33.64		35.32		34.80		41.84		49.87		50.35		52.90		48.80		42.58		39.67		35.42		41.89
1968	33.87		39.58	c	37.71		35.70		42.68		48.10		50.65		51.90		48.03		40.10		38.30		32.39		41.58
1969	28.81		32.18		34.13		37.60		45.48		53.63		49.68		47.81		48.93		41.32		37.33		35.87		41.06
1970	36.23		35.36		36.55		36.87		42.16		50.23		50.03		48.84		45.37		39.53	a	37.83		33.97		41.08
1971	34.48		33.25		34.55		37.77		42.65		46.47		50.65		51.94		45.53		39.42		37.10		33.35		40.60
1972	32.39		34.93		39.17	b	36.80		44.03		49.79	a	51.97		52.58		46.20		40.35		40.28	a	27.72	b	41.35
1973	31.06		36.82		36.29		38.80		43.48		49.60		51.00		48.58		50.00		42.84		38.30		38.45		42.10
1974	29.19		34.61		37.16		40.14	a	42.42		48.40		51.45		51.77		48.23		36.94		38.47		37.06		41.32
1975	36.77		33.50		35.68		35.00		42.39		46.73		51.13		50.35		46.57		43.48		35.53		35.97		41.09
1976	34.68		32.59		34.45		38.03		41.19		44.43		50.39		52.16		49.33		40.81		38.13		30.93	a	40.59
1977	27.84		34.39		34.68		37.57		41.29		47.57		48.80	a	53.52		47.83		43.16		37.03		38.77		41.04
1978	37.03		39.65	b	39.07	c	42.00	a	44.00	a	50.90		52.68		53.06		49.57		40.42		30.90		29.61		42.41
1979	25.68		36.04		38.48		41.33		43.13		46.40		50.94		50.84		49.97		45.87		36.13		37.06		41.82
1980	29.94		35.41		37.55		40.10		43.10		48.23		52.45		47.29		47.23		41.39		39.83		37.19		41.64
1981	34.13		35.50		36.71		40.60		44.23		48.27		51.32		51.87		47.23		40.87		39.83		37.13		42.31
1982	32.81		34.86		35.58		36.37		42.61		51.10		51.35		51.39		49.30		42.39		34.47		35.32		41.46
1983	36.29		39.25		42.29		39.27		44.65		48.83		52.13		53.48		47.77		40.42		41.87		31.06		43.11
1984	35.06		35.66		40.29		38.93		42.68		46.63		51.10		49.03	a	47.43		41.84		39.03		31.94		41.64
1985	28.06		31.89		33.87		41.87		42.77		47.37		52.29		50.03		45.83		40.65		31.50		25.52		39.30
1986	35.81		37.36		41.68		39.27		44.45		51.20		49.97		52.26		47.47		44.97		40.00		32.52		43.08
1987	33.06		36.57		38.61		40.33		46.13		49.20		52.50	a	51.84		46.80		41.45		40.77		34.52		42.65
1988	33.16		34.86		36.55		42.13		43.84		48.63		51.81		50.06		46.40		46.58		40.57		34.23		42.40
1989	34.81		28.04		38.13		43.87		44.06		50.53		51.58		51.23		47.79	a	40.97		38.57		33.81		41.95
1990	35.97		33.57		37.74		41.57		43.48		50.60		52.87		53.90		51.87		40.48		39.13		27.48		42.39
1991	30.94		40.68		36.06		39.83		43.19		47.10		52.48		52.19		50.10		40.68		41.17		36.10		42.54
1992	37.16		38.72		39.06		43.63		46.32		51.00		54.13		51.42		48.80		44.10		39.63		33.32		43.94
1993	28.13		30.86		41.55		42.23		48.29		49.93		51.52		53.77		45.03		42.87	a	30.33		33.55		41.51
1994	37.03		33.07		38.48		41.00		45.81		47.27		51.10		50.16		49.33		40.03		33.73		35.39		41.87
1995	38.39		38.25		37.42		38.97		45.52		50.20		55.06		50.03		53.03		42.42		43.93		36.13		44.11
1996	37.06		34.31		38.32		42.47		43.06		47.10		54.16		52.35		47.03		42.61		38.40		36.03	a	42.74
1997	35.29		35.57		38.58		40.50		47.03		47.83		52.48		54.00		50.97		43.26		40.53		32.48		43.21
1998	36.81		37.21		38.16		38.67		45.97		48.37		54.23		52.10		49.03	a	42.45		41.20		33.65		43.15
1999	35.77		36.61		36.03		37.60		41.55		47.00		48.84		53.65		45.43		40.00		42.03		35.52		41.67
2000	33.13		36.31		35.19		39.73		45.23		48.73		50.42		49.00		48.50		41.55		32.63		32.90		41.11
2001	32.29		31.39		36.74		36.80		42.45		45.43		50.39		50.77		47.67		40.35		40.87		34.71		40.82
2002	35.61		34.29		34.73	a	40.23		42.61		47.30		51.61		49.48		47.14	a	39.10		36.60		36.97		41.31
2003	37.00		34.68		41.39		40.77		43.74		49.14	b	51.23		51.40	a	48.60		45.19		35.33		35.37	a	42.82
2004	-----	z	35.79		-----	z	-----	z	45.77		50.07		52.19		53.90		48.93		44.26		36.13		36.42		44.83	c
2005	34.29		32.11		36.90		39.40		46.93	a	48.20		53.42		50.26		44.13		45.26		34.50		32.26		41.47
2006	38.71		32.43		35.61		39.77		44.17	a	52.27		53.19		48.77		45.17		38.32		39.70		33.71		41.82
2007	31.00		37.14		38.48		37.90		42.42		47.03		54.35		51.42		47.00		42.06		35.37		34.61		41.57
2008	30.84		32.90		33.48		36.60		45.45		45.43		50.47	a	52.45		45.70		39.74		41.37		30.65		40.42
2009	32.42		32.43		34.97		37.20		42.55		51.27		53.23		50.39		48.53		41.23	a	36.72	a	29.06		40.83
2010	38.61		38.00		36.45		38.83		42.87		48.37		50.80	a	49.10		49.90	a	42.23		37.67		37.52		42.53
2011	35.13		32.32		39.29		37.21	a	42.94		48.80		-----	z	52.81		49.43		44.48		36.97		31.47	a	40.99	a
2012	33.45		34.55		35.29		41.60		43.13		48.60		51.39		50.52		45.80		43.06		41.57		36.48		42.12
2013	30.90		35.36		37.10		40.43		46.26		49.70		51.87		53.61		52.67		39.61		37.59	a	27.68		41.90
2014	33.45		34.86		38.29		40.60		46.10		48.90		54.90		54.32		50.07	a	47.71		37.40		38.73	a	43.78
2015	35.77		40.32		37.52		37.67		45.45		50.87		52.81		53.16		47.07		46.16		34.57		38.19		43.30
2016	36.42		38.00		39.58		41.53		45.84		49.27		52.42		50.52		46.17		46.74		42.93		29.97		43.28
2017	28.23		35.07		39.53	a	39.63		44.97		51.53		51.48		53.87		50.50		40.19		39.13		29.97		42.01
2018	36.68		32.71		34.10		40.63		45.77		48.03		51.48		51.10		45.73		41.77		36.87		34.06		41.58
2019	32.81		31.18		33.23		42.50		44.26		47.57		52.23		53.06		51.20		36.81		33.70		34.74		41.11
2020	39.29		32.62		32.74		39.13		45.71		50.50		51.65		51.48		50.80		42.10		35.23		34.52		42.15
2021	36.32		34.46		32.77		36.50		42.06		50.93		52.55		52.97		48.61	b	42.60	a	40.83		33.74		42.03
2022	32.16		31.14		37.39		35.67		43.23		50.57		53.45		53.90		50.13		42.42		32.63		31.90	a	41.22
2023	34.26		29.39		32.68		40.17		45.61		47.64	b	51.58		55.65		49.13		44.84		37.20		38.81		42.25
2024	35.00		37.45		-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	36.22	j
Period of Record Statistics
MEAN	33.53		34.93		36.88		39.61		44.04		48.63		51.50		51.39		47.89		42.28		37.77		34.52		41.95
S.D.	3.51		2.85		2.48		2.16		1.89		2.04		1.99		2.40		2.22		2.58		3.13		3.08		1.27
SKEW	-0.53		-0.02		0.29		-0.07		0.16		0.18		0.40		1.49		0.09		0.10		-0.35		-0.20		0.34
MAX	41.03		41.18		44.03		44.90		49.03		53.87		59.29		65.82		53.93		49.61		44.33		42.52		45.85
MIN	22.90		28.04		31.71		34.73		39.94		43.72		46.48		45.77		42.43		35.03		30.33		25.52		38.74
YRS	126		130		126		127		129		128		125		128		128		127		128		128		113