CORVALLIS STATE UNIV, OREGON

Monthly Average Minimum Temperature (Degrees Fahrenheit)

(351862)

File last updated on Apr 4, 2013
*** Note *** Provisional Data *** After Year/Month 201303
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
1889 ----- z ----- z ----- z 43.20 47.58 60.77 63.87 ----- z ----- z ----- z 44.13 36.29 49.31
1890 29.23 33.21 40.61 39.17 45.87 47.90 48.19 48.81 42.57 36.87 32.30 35.45 40.01
1891 33.13 30.43 33.87 40.33 44.29 46.23 49.19 51.00 44.33 43.81 40.30 35.16 41.01
1892 32.97 33.62 37.81 37.90 41.90 46.20 48.68 ----- z ----- z ----- z ----- z ----- z 39.87
1893 26.97 31.79 35.35 37.37 42.35 44.00 46.52 46.71 45.73 37.87 34.67 36.61 38.83
1894 34.55 31.04 35.23 39.07 42.23 47.90 48.52 50.45 47.30 40.29 37.57 32.00 40.51
1895 32.06 33.89 32.90 37.97 43.19 46.23 ----- z 47.16 42.43 38.45 32.63 33.58 38.23
1896 34.45 36.69 33.81 37.13 41.23 45.40 49.84 52.77 42.90 38.61 31.53 37.42 40.15
1897 32.77 35.50 34.26 41.93 47.03 a 49.83 a 48.29 53.13 46.87 40.97 39.33 38.68 42.38
1898 34.55 39.75 34.77 41.10 a 43.42 ----- z 49.48 52.48 48.10 39.68 35.60 30.58 40.87
1899 36.52 29.39 34.06 38.00 43.94 45.57 48.81 49.16 47.00 40.68 44.33 35.19 41.05
1900 35.32 34.75 40.87 40.30 44.32 49.67 49.48 45.77 45.20 41.59 d 42.10 38.97 42.36
1901 32.55 34.79 36.71 39.80 45.65 46.40 47.74 50.45 44.97 46.03 40.17 34.45 41.64
1902 30.48 39.18 37.48 39.03 45.81 47.13 50.23 50.19 45.07 42.06 38.07 34.77 41.63
1903 34.29 29.79 34.35 37.23 43.90 49.90 48.61 49.81 45.37 41.58 39.07 34.00 40.66
1904 35.00 34.90 36.55 41.90 42.94 46.80 51.16 49.68 45.97 42.68 41.83 36.23 42.14
1905 34.61 33.61 41.03 40.90 44.45 48.47 52.90 49.32 48.73 40.61 33.23 34.65 41.88
1906 38.42 35.71 35.65 40.33 44.10 46.37 54.00 49.97 47.57 42.84 38.83 37.16 42.58
1907 29.32 38.86 36.32 40.30 43.74 48.87 50.63 d 51.16 47.10 45.71 36.93 38.35 42.27
1908 35.84 34.79 36.55 38.70 40.81 46.67 54.06 49.45 44.60 40.84 40.30 33.26 41.32
1909 27.61 37.75 37.32 37.80 40.39 47.33 50.19 47.03 47.37 43.87 36.87 ----- z 41.23
1910 34.17 s 33.46 38.65 39.27 45.39 46.57 50.42 47.61 45.53 43.77 38.17 35.13 42.18
1911 29.39 29.96 34.03 34.73 40.23 44.20 54.61 55.13 43.70 40.13 36.37 33.90 39.70
1912 36.45 39.45 34.39 38.09 g 44.39 49.70 52.26 50.10 48.48 a 36.80 a 37.87 g 35.67 d 42.77
1913 33.10 30.29 36.52 38.67 41.68 47.83 50.35 51.00 44.13 42.77 e 40.13 34.97 40.95
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
1915 32.58 36.89 39.84 40.80 44.94 53.87 53.71 51.97 46.70 40.13 37.63 36.00 42.92
1916 26.45 36.45 38.23 39.23 41.58 46.40 50.97 54.48 46.97 35.03 32.87 32.68 40.11
1917 31.10 33.57 32.32 39.10 43.48 44.11 b 49.87 49.94 48.77 39.84 f 37.65 d 41.61 41.05
1918 39.68 34.18 35.84 35.93 40.65 48.20 48.22 h 50.22 d 48.83 42.81 36.20 33.00 40.50
1919 31.13 34.14 35.45 38.43 40.94 43.23 46.94 48.03 45.57 37.94 35.50 23.68 38.41
1920 32.29 30.69 35.68 37.37 36.90 46.37 50.35 51.26 48.27 43.81 36.80 37.35 40.59
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 37.83 33.55 41.05
1924 30.03 38.97 34.68 37.67 42.84 47.13 48.64 f 50.26 44.93 42.35 37.17 25.55 39.23
1925 38.48 39.32 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 44.58 39.67 34.16 43.02
1929 30.00 29.54 38.42 38.20 44.52 50.30 52.71 53.10 49.10 45.03 33.43 38.55 41.91
1930 22.90 38.50 39.42 44.97 42.77 48.67 51.32 54.39 50.67 41.58 36.50 33.68 42.11
1931 36.97 34.54 39.84 43.30 47.42 50.57 53.81 52.61 50.07 44.81 36.30 35.29 43.79
1932 34.26 35.52 40.81 40.97 45.52 51.07 51.39 55.19 48.53 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 38.55 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 25.90 35.14 40.81 40.10 45.94 53.27 54.71 52.16 51.47 47.65 43.97 37.74 44.07
1938 34.97 35.79 38.00 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 53.68 53.97 51.13 45.90 40.60 40.42 44.39
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 39.93 46.65 49.23 51.71 50.58 46.87 41.06 40.00 35.42 42.50
1946 34.00 35.43 37.10 39.30 45.13 46.97 51.48 50.90 46.10 40.32 35.20 35.65 41.46
1947 30.52 35.71 39.48 41.60 45.77 49.30 50.97 49.94 48.63 46.13 39.53 35.48 42.76
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 22.03 33.54 39.68 41.70 46.58 49.20 50.94 51.97 50.37 38.68 41.20 35.29 41.76
1950 25.87 34.32 37.55 39.53 42.58 50.07 52.39 52.03 48.60 46.10 40.53 42.52 42.67
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 43.86 b 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 41.10 32.74 40.40
1955 32.06 31.11 32.84 35.60 39.94 47.13 48.68 47.06 45.53 43.03 36.33 34.90 39.52
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 25.84 34.50 39.52 40.77 47.48 49.53 49.13 48.35 48.80 42.32 31.20 36.71 41.18
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 39.70 42.68 47.87 49.16 49.16 46.90 41.68 37.17 31.77 40.50
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 39.42 37.83 33.97 41.07
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 39.94 36.80 44.03 50.00 51.97 52.58 46.20 40.35 40.10 26.84 41.34
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 40.27 42.42 48.40 51.45 51.77 48.23 36.94 38.47 37.06 41.33
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 31.26 40.62
1977 27.84 34.39 34.68 37.57 41.29 47.57 49.10 53.52 47.83 43.16 37.03 38.77 41.06
1978 37.03 39.82 40.00 42.10 44.16 50.90 52.68 53.06 49.57 40.42 30.90 29.61 42.52
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 49.29 47.43 41.84 39.03 31.94 41.66
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 52.55 51.84 46.80 41.45 40.77 34.52 42.65
1988 33.16 34.86 36.29 42.13 43.84 48.63 51.81 50.06 46.40 46.58 40.57 34.23 42.38
1989 34.81 28.04 38.13 43.87 44.06 50.53 51.58 51.23 47.93 40.97 38.57 33.81 41.96
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 50.48 48.80 44.10 39.63 33.32 43.86
1993 28.13 30.86 41.55 42.23 48.29 49.93 51.52 53.77 44.73 42.61 30.33 33.55 41.46
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 49.93 55.06 50.03 52.30 42.42 43.93 36.13 44.03
1996 37.06 34.31 38.32 42.47 43.06 47.10 54.16 52.35 47.03 42.61 38.40 36.23 42.76
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 49.37 42.45 41.20 33.65 43.18
1999 35.77 36.61 36.03 37.60 41.55 47.00 48.84 53.65 45.43 39.74 42.03 35.52 41.65
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 34.55 40.23 42.61 47.63 51.90 49.48 46.97 39.32 36.20 36.97 41.31
2003 37.00 34.68 41.39 40.77 43.74 49.07 51.23 51.61 48.90 45.19 35.33 35.39 42.86
2004 ----- z 35.79 ----- z ----- z 45.77 50.07 52.19 53.90 48.93 44.26 36.13 36.42 44.83
2005 34.29 32.11 36.90 39.40 46.97 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 44.35 52.27 53.19 48.77 45.17 37.97 39.70 33.71 41.80
2007 31.00 37.14 38.48 37.90 42.42 47.03 54.35 51.42 46.47 42.06 35.37 34.61 41.52
2008 30.84 32.90 33.48 36.60 45.45 45.43 50.39 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 41.42 36.73 29.06 40.85
2010 38.61 38.00 36.45 38.83 42.87 48.37 51.06 49.10 50.00 42.23 37.67 37.52 42.56
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
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 35.91 i ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 33.13
Period of Record Statistics
MEAN 33.23 34.89 36.94 39.64 43.90 48.54 51.37 51.07 47.63 42.19 37.84 34.57 41.84
S.D. 3.65 2.82 2.44 2.16 2.03 2.37 2.27 1.99 2.21 2.56 3.18 3.18 1.29
SKEW -0.55 -0.01 0.39 0.00 -0.05 1.20 1.35 -0.14 0.10 0.04 -0.35 -0.57 0.24
MAX 41.03 41.18 44.03 44.97 49.03 60.77 63.87 55.19 53.93 49.61 44.33 42.52 45.85
MIN 22.03 28.04 31.71 34.73 36.90 43.23 46.52 45.77 42.43 35.03 30.33 23.68 38.41
NO YRS 122 124 122 122 124 123 120 121 122 121 122 122 111