SALEM WSO AIRPORT, OREGON

Monthly Total Precipitation (inches)

(357500)

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
1892 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 0.00 z 0.00 z 6.08 6.08
1893 1.90 5.43 4.16 7.50 4.20 1.24 0.00 0.10 3.55 7.49 9.33 4.18 49.08
1894 9.92 4.32 10.13 3.68 2.24 3.50 0.19 0.00 2.27 4.39 2.19 4.62 47.45
1895 13.72 1.89 4.56 2.34 4.10 k 0.50 0.61 0.23 2.18 0.00 3.71 11.16 40.90
1896 6.35 3.31 2.69 6.12 5.54 0.99 0.00 1.00 0.66 2.97 16.99 8.31 54.93
1897 2.79 z 5.73 6.11 2.29 b 1.78 1.77 0.64 0.28 1.77 b 2.08 11.67 7.76 41.88
1898 3.43 a 5.64 2.15 2.44 1.75 1.61 0.40 0.06 1.13 4.65 6.82 4.31 34.39
1899 5.76 a 6.35 4.13 3.72 3.90 0.25 0.00 2.91 1.40 3.95 9.22 6.58 48.17
1900 4.15 2.98 4.25 2.60 3.90 2.20 0.62 0.00 0.00 z 4.70 2.76 6.86 35.02
1901 7.08 a 5.13 0.00 z 0.72 w 1.79 0.50 e 0.00 z 0.30 3.25 1.25 4.39 a 5.32 29.01
1902 1.48 7.90 b 6.00 3.71 3.59 0.90 0.00 z 0.00 z 0.42 1.07 7.98 7.49 40.54
1903 4.56 0.88 2.73 1.20 a 1.09 1.30 0.40 0.29 0.23 1.65 8.28 1.95 24.56
1904 3.78 9.47 9.04 1.68 0.43 0.32 0.80 0.14 0.42 2.82 6.53 6.65 42.08
1905 4.71 2.08 4.64 0.86 1.57 0.59 0.05 0.03 2.86 4.26 2.26 4.58 28.49
1906 5.42 5.78 1.94 1.58 1.85 2.50 0.00 0.00 1.92 2.38 5.99 4.65 34.01
1907 8.01 4.34 2.88 1.69 0.92 1.55 a 0.67 1.07 0.60 e 0.58 a 1.37 g 7.68 f 22.31
1908 3.54 e 1.63 d 2.63 1.99 2.38 1.06 0.02 0.52 a 0.30 4.88 3.61 2.90 25.46
1909 8.28 5.98 b 1.51 0.51 1.02 0.18 1.96 0.02 0.90 3.24 10.56 4.80 38.96
1910 5.63 4.92 1.24 2.20 1.58 1.19 0.00 0.02 1.26 1.80 8.03 4.02 31.89
1911 8.43 1.72 0.59 1.83 2.78 0.85 0.06 0.00 4.56 0.81 1.97 3.95 27.55
1912 5.52 3.94 1.79 2.03 2.40 2.70 0.32 1.81 1.49 3.22 5.78 4.72 35.72
1913 4.36 1.20 3.36 2.24 2.24 3.48 0.29 0.30 2.57 2.17 b 5.54 3.39 31.14
1914 8.71 4.12 2.56 2.59 1.96 1.85 0.00 0.00 4.84 3.34 3.38 2.52 35.87
1915 4.08 3.64 1.88 1.40 2.38 0.94 0.99 0.00 0.42 1.54 8.06 7.22 32.55
1916 5.39 6.43 9.96 2.59 2.58 1.31 2.72 0.35 1.17 1.43 7.12 4.71 45.76
1917 1.30 2.83 3.73 3.62 1.60 1.13 0.02 0.00 1.32 0.00 3.24 14.03 32.82
1918 4.39 5.68 3.81 1.22 1.08 0.00 0.67 0.67 0.17 2.83 3.94 3.76 28.22
1919 8.43 8.10 4.54 3.18 0.81 0.16 0.05 0.00 2.42 1.42 5.85 6.05 41.01
1920 2.98 0.34 4.24 3.37 0.25 2.69 0.55 0.95 4.45 4.97 c 6.76 8.29 39.84
1921 7.27 6.90 5.07 1.93 1.62 1.05 g 0.00 0.13 1.86 3.69 10.37 2.81 a 41.65
1922 3.11 4.33 6.14 2.16 0.93 0.03 0.00 1.49 1.97 4.91 2.57 10.41 38.05
1923 10.17 2.62 1.99 1.70 1.89 0.97 1.21 x 0.05 0.70 2.21 3.80 6.22 32.32
1924 3.54 2.59 b 1.29 1.10 0.61 0.22 0.00 0.53 2.37 8.31 7.98 4.61 33.15
1925 6.73 8.07 1.41 2.71 a 1.86 0.96 0.00 0.77 1.73 0.03 5.65 3.40 33.32
1926 3.21 8.91 0.64 0.49 2.95 0.24 0.00 2.42 1.89 4.28 9.30 4.84 39.17
1927 8.90 9.05 2.65 1.46 1.75 1.54 0.01 0.12 3.71 3.91 7.02 3.11 43.23
1928 4.83 1.29 8.00 5.21 0.45 0.85 0.05 0.00 0.78 v 1.78 q 7.15 j 7.64 28.32
1929 2.31 b 1.28 2.51 3.72 a 1.10 1.71 0.00 0.05 0.27 z 1.17 0.63 11.09 25.57
1930 3.98 6.43 1.93 3.95 1.75 0.99 0.01 0.01 2.03 1.92 3.75 3.30 30.05
1931 5.86 a 3.46 6.48 l 3.38 0.78 3.22 n 0.00 0.00 1.59 4.48 7.38 10.98 37.91
1932 6.08 2.11 j 5.02 i 3.38 3.06 0.22 0.65 0.54 0.01 4.33 7.96 7.77 34.00
1933 9.26 4.38 5.79 f 0.48 4.61 1.58 0.00 0.37 2.99 3.83 1.63 17.54 46.67
1934 6.40 1.59 3.89 2.33 1.35 0.34 0.30 0.27 0.43 3.64 9.49 9.38 39.41
1935 4.39 4.00 6.20 1.87 0.41 0.36 0.39 0.33 1.20 3.30 2.26 5.99 30.70
1936 10.22 5.57 3.13 1.13 3.41 1.11 0.49 0.00 1.49 0.21 0.48 6.37 33.61
1937 6.17 10.36 3.19 7.68 1.60 4.61 0.13 0.71 0.91 3.41 11.13 13.60 63.50
1938 4.48 7.60 8.42 2.27 0.78 0.08 0.36 0.06 1.38 3.68 4.26 5.18 38.55
1939 6.00 5.08 2.65 0.39 0.90 0.98 0.47 1.04 0.38 2.63 0.84 10.32 31.68
1940 4.75 11.66 5.94 1.99 2.17 0.07 0.62 0.00 2.36 3.79 4.55 5.03 42.93
1941 4.25 1.43 1.95 1.80 3.83 0.49 0.03 1.33 2.37 2.87 5.36 8.43 34.14
1942 4.79 3.10 1.27 1.74 4.58 1.69 0.92 0.04 0.01 2.04 13.38 11.70 45.26
1943 4.35 4.50 6.71 2.75 1.09 3.38 0.32 2.14 0.06 6.31 2.36 5.17 39.14
1944 5.27 3.53 1.64 2.75 0.93 0.50 0.05 0.05 1.97 1.54 4.30 2.67 25.20
1945 5.34 5.92 6.67 2.89 4.44 0.32 0.51 0.20 2.46 1.75 10.73 6.25 47.48
1946 6.57 5.77 5.72 1.14 1.15 1.28 0.72 0.09 1.89 4.55 8.04 4.45 41.37
1947 3.23 3.43 5.29 2.24 0.18 3.60 1.41 0.44 1.01 11.17 3.42 4.11 39.53
1948 6.73 6.35 5.01 3.85 4.15 0.38 0.60 0.52 2.60 2.26 7.56 9.14 49.15
1949 0.57 12.31 3.06 1.00 2.23 0.97 0.26 0.38 1.37 2.31 5.86 5.41 35.73
1950 11.70 6.22 4.86 1.88 1.21 2.80 0.18 0.35 0.84 10.74 9.67 6.10 56.55
1951 9.49 5.43 4.02 0.98 2.49 0.01 0.17 0.65 3.22 7.29 6.99 6.73 47.47
1952 6.60 4.86 2.59 1.57 0.20 2.64 0.00 0.00 0.20 0.83 1.73 8.63 29.85
1953 15.40 4.87 4.95 1.58 3.76 1.34 0.00 1.65 1.59 3.06 6.99 7.80 52.99
1954 9.99 5.87 3.02 2.70 1.34 2.47 0.31 0.72 1.28 3.45 5.07 6.26 42.48
1955 2.63 2.25 3.66 5.18 1.18 1.09 0.86 0.00 2.30 7.78 6.75 12.22 45.90
1956 12.68 5.42 5.91 0.64 1.61 1.20 0.00 0.37 0.87 6.50 1.03 2.94 39.17
1957 2.57 4.93 8.16 2.02 2.77 2.10 0.18 0.27 0.96 2.98 3.44 8.87 39.25
1958 8.80 7.04 2.50 3.71 1.38 2.53 0.00 0.03 1.00 2.23 7.18 4.71 41.11
1959 11.15 4.98 4.45 1.12 2.09 1.41 0.50 0.02 2.10 1.53 2.06 3.97 35.38
1960 4.41 5.41 6.99 3.50 3.59 0.47 0.00 0.65 0.65 2.75 9.45 3.24 41.11
1961 4.79 10.82 8.19 3.19 2.44 0.30 0.96 0.28 0.91 3.18 4.42 6.64 46.12
1962 1.11 3.97 5.65 3.03 2.11 0.69 0.00 0.70 1.53 4.55 8.54 3.01 34.89
1963 2.80 3.34 6.51 4.07 3.70 0.85 0.91 0.09 1.41 3.59 6.52 3.85 37.64
1964 11.19 0.78 3.55 1.28 0.59 1.73 0.45 0.41 0.74 0.93 8.44 12.40 42.49
1965 8.15 1.57 0.87 2.41 1.16 1.11 0.19 0.99 0.13 2.20 7.00 7.95 33.73
1966 6.60 2.24 6.08 1.07 0.78 0.58 0.53 0.40 1.66 2.06 5.88 7.32 35.20
1967 7.29 2.06 3.84 2.02 1.87 0.69 0.00 0.00 0.84 5.08 3.30 5.45 32.44
1968 6.37 7.73 3.32 1.47 3.46 1.29 0.39 4.17 2.48 6.14 6.49 11.05 54.36
1969 8.61 3.24 1.63 2.51 0.89 2.94 0.05 0.05 3.58 4.44 3.21 9.23 40.38
1970 13.47 4.46 1.92 2.63 1.36 0.85 0.01 0.00 1.81 3.25 7.18 9.74 46.68
1971 6.49 4.34 6.93 4.05 1.89 2.47 0.01 1.49 3.98 3.09 6.27 8.18 49.19
1972 7.98 4.68 4.96 3.79 2.40 0.69 0.12 0.14 2.07 0.70 3.77 8.70 40.00
1973 5.64 1.62 3.50 1.69 1.11 1.48 0.00 0.80 2.80 2.79 15.23 11.08 47.74
1974 10.89 5.56 7.95 1.48 0.90 0.41 1.80 0.11 0.28 2.15 7.42 6.94 45.89
1975 4.96 4.68 4.22 2.20 1.66 0.81 0.51 1.96 0.00 5.51 6.06 6.07 38.64
1976 5.47 6.92 3.66 2.00 1.33 1.04 0.67 1.89 1.13 1.51 1.13 1.26 28.01
1977 0.88 2.83 3.33 0.62 3.76 0.73 0.26 1.70 2.36 2.37 6.19 8.73 33.76
1978 5.67 3.54 1.23 3.50 2.97 0.48 1.07 2.56 2.64 0.37 4.50 2.64 31.17
1979 2.84 7.19 2.17 2.82 2.20 0.65 0.30 0.70 2.19 6.06 3.83 6.95 37.90
1980 6.58 4.04 3.48 3.58 1.53 1.99 0.22 0.04 1.05 1.45 5.24 10.44 39.64
1981 2.09 3.29 3.45 2.06 2.19 3.33 0.15 0.00 2.78 4.63 7.54 9.73 41.24
1982 6.11 6.02 2.81 3.80 0.73 1.36 0.33 0.41 1.83 3.04 4.92 9.26 40.62
1983 6.00 10.57 8.56 2.72 2.12 2.48 2.63 2.09 0.32 1.31 10.06 6.49 55.35
1984 2.34 5.50 4.40 3.74 3.32 4.19 0.03 0.00 1.19 4.31 12.70 3.71 45.43
1985 0.24 3.44 3.80 0.93 0.65 2.42 0.32 0.20 1.25 3.17 4.81 2.51 23.74
1986 6.25 8.26 2.89 1.30 2.22 0.42 1.23 0.00 3.12 2.71 7.24 3.86 39.50
1987 7.67 3.52 3.98 2.36 1.52 0.26 2.51 0.15 0.14 0.47 3.00 10.92 36.50
1988 6.78 0.75 3.34 3.56 2.39 1.97 0.03 0.00 0.98 0.12 9.50 3.23 32.65
1989 3.57 2.79 6.47 1.06 1.08 1.03 0.77 0.48 1.03 2.50 3.09 3.95 27.82
1990 8.51 5.31 2.39 1.67 1.94 1.09 0.47 0.85 0.42 5.63 4.91 2.82 36.01
1991 2.42 3.72 5.18 3.84 4.51 1.55 0.11 0.67 0.04 1.70 5.94 3.73 33.41
1992 4.76 4.46 0.89 4.35 0.05 1.12 0.50 0.38 0.70 3.52 4.84 7.83 33.40
1993 4.77 1.61 5.12 5.64 3.59 3.17 1.05 0.40 0.01 1.11 1.26 6.84 34.57
1994 4.28 4.21 2.56 2.16 1.61 1.14 0.00 0.05 1.64 7.96 7.09 4.91 37.61
1995 8.63 4.35 4.44 4.41 1.29 1.48 0.36 1.29 1.81 4.07 9.07 7.28 48.48
1996 8.26 13.01 3.08 5.72 3.21 0.74 0.90 0.20 1.94 4.78 10.11 15.01 66.96
1997 9.07 2.08 7.32 3.41 2.71 1.86 0.36 1.13 3.81 6.45 4.40 3.16 45.76
1998 9.06 6.18 4.96 1.63 5.56 0.98 0.10 0.04 0.68 2.52 11.70 8.66 52.07
1999 9.61 11.40 5.06 1.35 1.90 1.43 0.15 0.68 0.09 2.44 7.26 5.38 46.75
2000 7.05 6.92 2.98 1.29 1.56 0.71 0.09 0.03 0.75 2.40 2.53 3.62 29.93
2001 1.81 1.22 2.82 2.49 1.45 1.89 0.24 0.78 0.57 3.35 9.02 8.03 33.67
2002 8.93 3.54 4.47 1.77 1.35 1.22 0.07 0.02 0.98 0.47 3.84 11.20 37.86
2003 7.38 2.78 4.79 5.54 1.74 0.62 0.00 0.03 0.94 2.47 4.99 10.42 41.70
2004 6.65 5.10 1.43 2.13 2.06 1.78 0.09 1.04 2.08 3.30 2.14 3.89 31.69
2005 1.43 0.49 4.15 2.82 4.65 1.90 0.21 0.05 2.33 2.70 6.04 11.52 38.29
2006 13.37 2.12 4.17 2.46 a 2.88 0.65 0.07 0.00 0.54 0.65 15.15 7.35 49.41
2007 3.92 5.33 2.35 2.29 1.27 0.78 0.34 0.72 2.76 4.24 3.75 8.25 36.00
2008 8.34 1.89 3.54 1.97 0.43 0.74 0.00 1.28 0.41 0.96 3.59 6.02 29.17
2009 3.56 2.90 3.03 1.35 3.03 1.39 0.68 0.18 1.20 2.61 8.02 6.14 34.09
2010 5.85 4.07 5.20 4.35 3.47 2.64 0.04 0.20 2.07 5.22 6.44 9.95 49.50
2011 3.25 4.31 7.16 4.15 3.40 0.98 0.74 0.11 0.35 2.15 5.96 3.32 35.88
2012 11.29 4.14 9.98 3.08 2.31 2.20 0.07 0.00 0.04 5.99 8.44 7.89 55.43
2013 1.53 1.42 2.20 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 5.15
Period of Record Statistics
MEAN 6.07 4.69 4.13 2.57 2.07 1.32 0.39 0.52 1.53 3.23 6.14 6.70 39.36
S.D. 3.08 2.64 2.15 1.39 1.21 0.96 0.53 0.71 1.10 2.09 3.23 3.10 8.33
SKEW 0.54 0.87 0.76 1.14 0.74 1.06 2.43 2.23 0.75 1.13 0.69 0.74 0.67
MAX 15.40 13.01 10.13 7.68 5.56 4.61 2.72 4.17 4.84 11.17 16.99 17.54 66.96
MIN 0.24 0.34 0.59 0.39 0.05 0.00 0.00 0.00 0.00 0.00 0.48 1.26 23.74
NO YRS 120 120 117 119 119 118 117 119 117 119 118 120 107