CORVALLIS STATE UNIV, OREGON

Monthly Total Precipitation (inches)

(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 0.00 z 0.00 z 0.00 z 3.55 3.22 0.56 0.00 1.17 1.74 6.40 2.88 6.44 25.96
1890 10.62 8.88 5.67 1.82 0.29 1.23 0.50 0.14 0.00 1.65 0.22 3.80 34.82
1891 3.75 7.82 2.48 2.40 1.70 2.11 0.00 0.55 0.80 4.10 7.35 11.83 44.89
1892 4.55 1.77 3.20 4.65 0.45 0.61 0.45 0.00 1.68 2.05 5.27 6.20 30.88
1893 2.35 5.40 4.55 5.18 3.66 0.60 0.00 0.09 3.24 5.67 8.28 4.02 43.04
1894 12.38 5.29 8.12 2.81 1.90 2.94 0.10 0.05 1.20 4.45 2.10 5.35 46.69
1895 11.65 1.55 4.45 3.06 4.36 0.28 0.39 0.00 2.15 0.00 4.64 11.21 43.74
1896 8.35 3.24 3.13 6.98 5.71 0.98 0.00 1.16 0.41 3.30 16.69 7.81 57.76
1897 2.84 6.98 5.71 1.73 1.09 2.09 0.09 0.38 1.57 2.38 11.66 7.09 43.61
1898 3.82 5.48 2.34 2.44 2.26 1.33 0.23 0.12 3.15 1.59 8.63 3.62 35.01
1899 6.26 5.61 5.16 3.64 2.26 0.42 0.07 2.76 1.04 3.97 10.93 7.57 49.69
1900 4.74 4.01 4.66 1.72 3.16 2.03 0.13 0.20 2.51 5.88 3.46 5.99 38.49
1901 8.47 6.28 4.15 3.09 1.86 1.09 0.00 0.18 2.72 2.23 6.21 5.08 41.36
1902 4.25 10.29 6.96 3.93 2.86 0.27 1.44 0.00 1.16 1.71 11.23 9.92 54.02
1903 7.24 1.64 2.68 2.67 1.03 1.09 0.34 0.44 0.37 1.73 11.82 3.08 34.13
1904 5.56 15.23 11.70 1.82 0.76 0.32 0.85 0.11 0.59 2.74 7.48 9.05 56.21
1905 4.97 2.95 7.05 0.67 2.12 1.42 0.00 0.00 1.25 4.75 3.05 6.16 34.39
1906 7.22 6.76 2.42 2.38 3.07 2.82 0.00 0.00 2.24 2.70 9.35 6.75 45.71
1907 8.97 5.38 5.39 2.98 1.27 1.11 0.24 1.15 1.17 1.32 7.92 13.33 50.23
1908 4.24 4.10 4.33 1.99 2.89 1.38 0.00 1.00 0.23 4.34 4.01 4.78 33.29
1909 13.61 9.45 1.93 0.26 1.39 0.30 1.10 0.11 1.16 4.51 11.53 4.96 50.31
1910 6.54 7.54 1.21 2.47 0.83 1.73 0.00 0.01 0.85 2.56 10.45 4.33 38.52
1911 11.34 2.61 0.75 3.00 4.21 1.05 0.03 0.02 4.27 1.33 4.58 5.27 38.46
1912 8.71 5.23 3.66 2.00 2.14 1.48 0.17 2.18 1.94 3.02 8.90 6.52 45.95
1913 6.36 1.22 4.33 2.76 1.89 2.88 0.93 0.37 2.33 3.57 6.01 3.11 35.76
1914 11.47 4.42 3.12 4.37 1.59 2.15 0.00 0.00 3.84 4.97 4.56 3.64 44.13
1915 6.19 3.60 1.83 1.40 2.39 0.54 1.09 0.00 0.39 1.29 9.80 8.30 36.82
1916 6.28 7.02 10.81 1.91 2.77 1.45 2.34 0.03 0.60 1.11 6.62 5.71 46.65
1917 3.14 3.84 4.85 4.23 1.50 0.86 0.00 0.01 2.19 0.00 4.85 13.66 39.13
1918 7.26 7.69 3.20 1.26 1.21 0.00 0.45 0.43 0.56 2.60 4.69 4.27 33.62
1919 9.97 10.65 5.98 3.47 1.32 0.22 0.10 0.14 3.08 2.04 6.49 7.11 50.57
1920 1.99 0.12 5.21 2.81 0.51 1.85 0.41 0.79 5.40 4.69 5.36 7.98 37.12
1921 7.15 5.38 4.23 1.99 1.47 0.94 0.00 0.08 1.99 3.63 10.71 3.48 41.05
1922 3.80 4.85 5.81 1.77 0.76 0.02 0.00 0.87 1.51 4.88 3.07 11.11 38.45
1923 10.88 2.16 2.57 2.71 0.99 1.09 1.08 0.19 0.71 2.39 3.98 8.32 37.07
1924 3.95 3.75 2.92 0.72 0.47 0.66 0.00 1.08 2.22 7.60 8.90 5.60 37.87
1925 7.29 7.76 1.44 3.12 2.04 1.16 0.06 0.87 1.05 0.05 5.11 4.12 34.07
1926 3.48 10.30 0.43 0.80 1.81 0.09 0.00 1.66 0.81 4.27 9.86 6.53 40.04
1927 11.69 9.01 2.95 1.56 1.83 2.45 0.02 0.21 2.53 2.96 8.04 4.62 47.87
1928 5.06 1.64 7.95 3.97 0.48 0.40 0.03 0.00 1.69 1.60 9.43 7.02 39.27
1929 3.60 0.36 2.49 3.63 0.40 1.28 0.00 0.03 0.26 0.66 0.30 11.44 24.45
1930 2.99 5.07 1.47 2.97 1.14 0.94 0.00 0.00 2.01 1.43 3.33 2.33 23.68
1931 4.72 2.83 5.72 1.28 0.19 3.35 0.00 0.00 1.52 3.82 6.58 9.12 39.13
1932 6.55 2.08 5.06 2.36 2.24 0.24 0.61 0.83 0.00 3.99 4.89 8.09 36.94
1933 7.93 5.14 4.03 0.76 3.70 0.84 0.00 0.69 1.68 2.67 1.00 14.15 42.59
1934 5.55 0.98 2.12 1.94 1.28 0.24 0.26 0.10 0.57 4.57 9.71 8.10 35.42
1935 4.21 3.37 4.52 2.00 0.52 0.21 0.51 0.10 1.28 2.61 2.26 4.76 26.35
1936 10.82 5.35 1.97 1.43 3.41 1.70 0.32 0.00 0.89 0.16 0.24 5.82 32.11
1937 7.61 7.55 3.95 7.99 2.32 3.58 0.08 0.45 1.06 2.59 9.71 11.17 58.06
1938 4.03 6.33 7.42 1.51 0.64 0.08 0.17 0.00 1.35 2.92 4.10 3.49 32.04
1939 3.92 3.60 2.44 0.22 1.71 0.70 0.43 1.14 0.43 2.90 0.31 8.53 26.33
1940 4.41 9.80 4.93 2.26 2.62 0.12 0.16 0.00 2.75 4.14 4.46 4.71 40.36
1941 4.38 1.65 1.22 2.01 2.42 1.03 0.00 1.09 3.96 1.64 5.56 7.99 32.95
1942 4.95 3.36 1.04 1.62 2.56 1.11 0.28 0.00 0.00 1.22 12.69 10.37 39.20
1943 5.09 3.78 5.60 2.01 1.16 1.32 0.22 1.62 0.02 5.54 2.51 2.66 31.53
1944 3.06 2.25 2.23 2.93 0.85 0.62 0.14 0.00 2.18 1.36 4.63 2.74 22.99
1945 4.34 5.04 5.60 2.33 3.10 0.22 0.14 0.08 0.94 0.89 10.08 5.03 37.79
1946 4.79 4.28 4.59 0.68 0.59 0.98 0.57 0.01 2.17 4.22 6.78 3.76 33.42
1947 2.26 2.97 4.86 1.67 0.16 2.55 2.72 0.46 0.66 9.05 3.10 3.45 33.91
1948 7.08 5.10 3.86 2.64 2.67 0.39 0.70 0.06 1.87 2.34 5.97 7.46 40.14
1949 1.74 10.58 2.19 0.55 2.06 0.68 0.03 0.27 1.56 1.72 4.89 4.19 30.46
1950 12.17 5.23 4.16 0.99 0.65 0.88 0.21 0.76 0.97 9.70 7.73 5.13 48.58
1951 7.36 4.62 4.16 0.65 1.32 0.02 0.11 0.08 1.23 6.78 5.84 6.13 38.30
1952 5.08 5.54 1.75 0.92 0.35 3.84 0.00 0.16 0.40 1.02 1.49 7.13 27.68
1953 12.23 5.43 4.50 1.97 3.31 1.83 0.00 1.74 0.49 3.93 6.96 7.82 50.21
1954 11.86 5.25 2.91 2.71 0.78 3.11 0.53 0.64 1.60 3.56 5.86 6.92 45.73
1955 3.09 2.29 6.12 4.91 1.01 0.85 0.62 0.00 1.97 6.59 7.12 a 12.64 47.21
1956 11.89 5.48 5.89 0.93 1.98 1.14 0.02 0.34 1.12 5.86 1.38 4.56 40.59
1957 2.78 4.89 7.01 2.11 3.21 1.07 0.17 0.22 1.50 3.14 2.81 10.38 39.29
1958 8.15 7.81 2.55 3.66 1.12 2.91 0.02 0.02 1.30 2.54 8.49 4.15 42.72
1959 10.52 4.56 3.99 0.84 2.20 1.31 0.32 0.00 1.60 1.57 2.58 3.35 32.84
1960 4.38 6.49 7.18 3.29 3.92 0.22 0.00 0.64 0.52 2.52 10.50 3.32 42.98
1961 4.80 9.91 7.46 2.23 2.05 0.41 0.59 0.33 1.18 3.84 5.79 5.58 44.17
1962 1.21 3.82 6.37 2.90 2.31 0.39 0.00 0.57 1.60 4.62 7.89 2.90 34.58
1963 1.64 5.23 6.30 4.64 3.94 0.96 0.52 0.65 0.94 2.77 7.04 3.91 38.54
1964 11.68 0.79 4.33 1.61 0.55 0.88 0.57 0.23 0.31 1.25 9.23 13.27 44.70
1965 11.45 1.56 0.59 2.00 1.08 0.52 0.39 0.98 0.04 2.12 8.70 7.69 37.12
1966 10.21 1.78 7.21 0.95 0.49 0.76 0.49 0.27 1.71 3.18 5.27 7.67 39.99
1967 9.50 1.78 4.23 1.60 0.85 0.77 0.00 0.00 0.84 6.19 3.46 6.32 35.54
1968 7.14 7.11 3.91 1.51 3.45 0.79 0.34 5.24 1.99 6.32 6.52 14.42 58.74
1969 9.35 4.27 1.81 1.94 1.64 2.46 0.05 0.00 3.62 2.92 2.86 11.59 42.51
1970 15.51 5.97 2.29 2.66 1.12 0.53 0.12 0.00 1.07 4.04 7.30 12.47 53.08
1971 10.71 5.35 6.16 4.38 2.33 2.48 0.02 0.48 3.10 2.80 9.21 10.13 57.15
1972 10.10 5.13 6.46 4.27 2.36 1.01 0.08 0.24 2.28 0.88 4.92 9.33 47.06
1973 5.56 1.65 3.63 1.75 0.85 1.38 0.02 0.70 2.52 2.70 18.28 12.40 51.44
1974 11.59 7.52 8.87 2.39 1.46 0.61 1.81 0.00 0.07 1.41 6.88 8.15 50.76
1975 4.66 5.48 4.64 2.40 2.07 1.14 0.62 1.68 0.00 4.30 5.51 6.47 38.97
1976 6.59 6.71 4.45 1.98 1.14 0.47 0.90 2.08 1.27 1.25 1.42 1.47 29.73
1977 0.96 2.97 5.09 1.02 3.43 1.13 0.12 1.89 3.58 2.58 8.11 11.03 41.91
1978 7.34 4.28 2.15 4.94 3.61 0.94 0.29 2.34 3.40 0.98 3.14 4.23 37.64
1979 2.57 8.35 2.89 2.93 2.11 0.38 0.43 2.67 2.15 7.21 4.11 6.26 42.06
1980 6.69 3.88 4.02 3.63 1.46 1.75 0.24 0.01 0.96 1.87 6.29 11.33 42.13
1981 2.27 4.44 3.00 2.37 2.99 2.58 0.10 0.01 3.09 5.52 6.73 13.98 47.08
1982 7.21 7.12 3.54 4.57 0.49 1.51 0.43 0.28 1.89 3.64 5.51 10.56 46.75
1983 6.91 10.31 8.78 3.01 1.51 1.39 2.55 2.21 0.53 1.05 9.93 7.35 55.53
1984 3.26 6.92 3.82 3.41 3.67 4.34 0.20 0.00 0.74 4.65 13.55 4.01 48.57
1985 0.25 3.65 4.94 1.05 0.94 2.22 0.54 0.48 0.78 3.89 4.69 3.72 27.15
1986 6.53 9.90 3.04 1.84 2.50 0.31 1.15 0.00 3.56 2.80 8.62 3.50 43.75
1987 8.22 4.50 3.70 1.56 1.40 0.29 2.23 0.17 0.05 0.27 3.90 11.42 37.71
1988 7.12 1.70 3.90 3.33 3.84 1.83 0.09 0.00 0.73 0.14 10.87 3.97 37.52
1989 4.18 3.21 6.80 1.42 1.46 1.14 0.33 0.87 0.60 2.66 3.90 3.07 29.64
1990 9.50 5.79 2.21 2.38 1.43 1.53 0.45 1.72 0.83 4.56 4.87 3.54 38.81
1991 2.68 3.22 5.85 3.47 3.91 1.52 0.38 0.72 0.19 2.55 5.12 4.38 33.99
1992 4.52 4.54 1.04 4.08 0.00 1.18 1.18 0.44 0.55 3.52 4.99 7.38 33.42
1993 4.15 2.20 4.86 6.82 4.51 2.11 0.79 0.31 0.07 1.07 1.03 7.98 35.90
1994 3.89 5.59 3.46 1.94 1.13 1.89 0.01 0.00 0.89 3.84 9.03 6.26 37.93
1995 9.90 4.29 4.74 5.30 1.43 2.36 0.52 0.82 3.14 3.96 7.72 10.12 54.30
1996 10.37 13.63 3.54 4.93 3.98 0.85 0.92 0.14 2.22 5.32 10.20 17.11 73.21
1997 9.08 2.20 6.43 3.60 2.20 2.42 0.38 1.25 3.39 5.50 5.18 3.02 44.65
1998 9.05 7.70 6.69 1.83 5.80 0.97 0.10 0.00 0.88 3.79 12.80 10.40 a 60.01
1999 9.67 12.61 5.31 1.07 1.99 0.82 0.06 0.35 0.07 2.92 8.99 5.94 49.80
2000 8.13 6.34 3.64 1.63 2.99 1.22 0.16 0.02 0.64 2.97 2.77 4.41 34.92
2001 1.60 1.20 2.85 2.33 1.11 2.02 0.28 0.96 0.54 3.09 8.23 9.34 33.55
2002 9.18 3.77 5.64 1.85 1.75 1.20 0.02 0.29 1.13 0.72 5.41 12.51 43.47
2003 7.22 3.59 7.52 6.48 1.33 0.36 0.00 0.11 1.01 1.98 6.04 11.23 46.87
2004 0.00 z 4.95 0.00 z 0.00 z 1.30 1.51 0.04 1.79 2.42 4.08 2.52 4.57 23.18
2005 2.79 0.47 4.34 2.63 4.24 2.02 0.12 0.16 0.39 3.55 6.57 11.84 39.12
2006 13.95 3.15 4.00 2.50 2.45 0.83 0.14 0.05 0.67 1.10 16.18 8.38 53.40
2007 3.90 5.70 2.70 2.00 1.61 0.64 0.43 0.80 1.74 4.34 4.34 9.44 37.64
2008 8.72 2.68 4.50 2.38 0.38 1.04 0.05 1.23 0.85 1.49 4.71 6.01 34.04
2009 3.70 3.31 3.81 1.29 3.65 0.62 0.79 0.25 1.19 2.94 8.14 5.45 35.14
2010 6.76 4.38 6.08 4.38 3.30 2.75 0.10 0.53 2.59 4.85 5.52 10.25 51.49
2011 4.01 3.30 7.69 4.06 3.57 1.18 0.00 z 0.03 0.38 2.74 5.51 4.26 a 36.73
2012 11.34 3.70 11.47 4.52 2.79 2.27 0.50 0.04 0.33 4.51 a 8.75 8.56 58.78
2013 1.71 1.99 2.33 i 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 3.70
Period of Record Statistics
MEAN 6.61 5.01 4.42 2.60 1.99 1.24 0.36 0.54 1.44 3.17 6.49 7.15 41.15
S.D. 3.34 2.83 2.17 1.43 1.22 0.89 0.52 0.77 1.08 1.86 3.43 3.29 8.66
SKEW 0.36 0.91 0.78 1.09 0.68 1.02 2.56 2.69 0.95 0.75 0.65 0.61 0.59
MAX 15.51 15.23 11.70 7.99 5.80 4.34 2.72 5.24 5.40 9.70 18.28 17.11 73.21
MIN 0.25 0.12 0.43 0.22 0.00 0.00 0.00 0.00 0.00 0.00 0.22 1.47 22.99
NO YRS 123 124 122 123 124 124 123 124 124 124 124 124 121