OREGON CITY, OREGON

Monthly Total Precipitation (inches)

(356334)

File last updated on Apr 4, 2013
*** Note *** Provisional Data *** After Year/Month 201302
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
1911 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 3.49 4.82 8.31
1912 9.10 5.27 2.15 2.89 2.17 4.12 0.61 5.16 1.26 4.19 6.71 7.11 50.74
1913 8.18 1.28 5.79 4.11 2.36 4.23 0.67 0.74 3.01 4.50 7.50 3.79 46.16
1914 12.79 5.07 4.07 4.26 2.11 2.55 0.17 0.00 3.85 4.50 5.07 3.16 47.60
1915 6.74 4.40 2.83 2.11 2.78 1.64 1.34 0.00 0.67 2.71 11.84 c 10.24 47.30
1916 6.44 11.42 12.06 4.21 3.09 1.86 2.90 0.26 1.95 1.64 8.18 4.40 58.41
1917 4.21 3.72 8.22 6.97 3.67 1.48 0.01 0.00 2.24 0.03 4.23 18.71 53.49
1918 6.40 8.06 5.50 1.22 1.16 0.01 0.67 0.74 0.38 5.07 5.06 4.99 39.26
1919 10.91 8.96 6.01 4.42 2.56 1.04 0.06 0.05 3.91 1.73 9.73 6.79 56.17
1920 5.84 0.40 4.36 5.61 1.25 3.03 1.18 1.39 5.76 5.01 7.18 9.79 50.80
1921 8.92 7.67 5.34 2.17 2.06 1.50 0.03 0.16 2.89 3.32 12.12 3.32 49.50
1922 4.04 4.24 7.83 2.94 1.24 0.23 0.00 2.26 1.86 5.03 2.66 9.87 42.20
1923 13.00 2.55 3.14 2.10 1.68 0.00 z 0.00 z 0.00 z 0.00 z 0.38 4.77 7.00 34.62
1924 3.27 5.87 1.93 1.24 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 6.58 8.29 5.10 32.28
1925 8.80 8.87 2.94 3.81 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.05 5.71 5.55 35.73
1926 3.46 0.00 z 1.01 1.50 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 5.01 9.93 5.39 26.30
1927 8.87 8.11 3.65 1.50 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 4.47 10.19 2.86 39.65
1928 5.63 1.76 8.96 6.00 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 1.92 6.26 8.72 39.25
1929 3.50 1.24 3.27 4.37 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 1.29 0.70 11.34 25.71
1930 4.40 6.81 2.07 3.12 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 2.49 3.05 3.13 25.07
1931 3.29 j 3.07 6.80 4.50 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 5.42 8.22 9.15 37.16
1932 6.41 3.63 8.25 3.81 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 4.83 9.41 6.82 43.16
1933 8.48 4.49 6.23 1.01 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 20.21
1934 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 0.00 z 0.00
1935 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 0.00 z 0.00
1936 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 0.00 z 0.00
1937 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 0.00 z 0.00
1938 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 0.00 z 0.00
1939 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 0.00 z 0.00
1940 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 0.00 z 0.00
1941 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 0.00 z 0.00
1942 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 0.00 z 0.00
1943 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 0.00 z 0.00
1944 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 0.00 z 0.00
1945 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 0.00 z 0.00
1946 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 0.00 z 0.00
1947 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 0.00 z 0.00
1948 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.91 2.07 3.46 2.70 8.46 10.26 a 27.86
1949 1.48 13.09 3.34 1.16 2.69 1.25 0.94 0.22 2.60 3.17 6.92 6.50 43.36
1950 11.44 6.97 a 6.29 a 3.13 1.09 2.05 1.35 0.45 2.26 10.34 12.70 7.48 65.55
1951 10.50 5.93 5.63 1.06 2.58 0.09 0.16 0.34 3.71 5.55 6.25 7.29 49.09
1952 6.20 4.72 4.51 1.75 0.89 3.30 0.00 0.09 0.42 0.87 1.32 7.70 31.77
1953 16.77 4.76 4.96 2.52 4.15 a 1.50 0.04 2.53 1.40 3.39 7.46 9.04 58.52
1954 11.25 5.06 3.46 3.88 2.17 3.76 0.69 2.18 1.01 3.91 5.61 6.49 49.47
1955 3.02 3.62 5.32 6.30 1.45 1.37 1.39 0.00 3.46 7.68 9.71 11.20 54.52
1956 14.25 4.44 7.61 0.68 2.30 1.99 0.02 3.57 1.67 7.69 1.81 4.53 50.56
1957 3.26 4.81 9.43 1.66 3.10 1.95 0.43 a 0.37 0.68 3.97 4.02 10.60 a 44.28
1958 9.43 6.93 2.67 5.38 0.61 3.26 0.00 0.04 1.40 1.73 8.21 7.12 46.78
1959 10.41 5.75 5.07 1.65 3.76 2.00 0.83 0.17 3.81 4.17 3.34 3.86 44.82
1960 4.91 4.94 6.64 4.09 5.80 0.64 0.00 1.33 1.20 3.49 12.68 4.18 49.90
1961 5.22 11.74 7.01 3.47 4.14 0.60 0.57 0.85 0.84 4.04 6.01 6.65 51.14
1962 2.13 4.33 5.88 4.05 3.62 1.15 0.06 1.37 2.43 4.36 11.78 3.00 44.16
1963 1.96 4.99 6.33 5.06 4.36 1.74 1.30 0.54 1.46 3.68 7.73 4.22 43.37
1964 13.64 1.22 4.43 1.85 1.07 2.90 0.76 0.95 1.72 1.22 9.65 14.78 54.19
1965 10.67 1.99 1.47 3.42 1.91 0.75 0.24 1.50 0.03 2.54 7.28 8.87 40.67
1966 9.75 2.19 6.43 1.29 1.31 1.67 1.26 0.31 1.72 3.32 6.60 8.29 44.14
1967 8.65 2.76 6.08 3.54 2.52 1.17 0.00 0.00 0.81 6.36 2.74 6.24 40.87
1968 5.53 8.87 3.60 1.95 3.23 3.44 0.50 4.95 3.83 7.09 7.89 14.56 65.44
1969 10.47 3.92 2.99 9.44 2.23 4.48 0.09 0.11 4.50 5.00 3.77 9.15 56.15
1970 14.05 6.03 3.01 3.76 1.81 0.69 0.09 0.00 2.15 3.59 8.69 9.36 53.23
1971 10.08 4.50 6.27 4.33 2.41 3.16 0.37 1.50 3.79 4.37 7.66 10.25 58.69
1972 9.17 6.71 6.53 4.81 2.87 0.73 0.50 0.71 4.41 1.04 6.47 9.79 53.74
1973 5.90 2.34 4.00 1.79 1.62 2.23 0.08 1.40 3.18 4.00 14.21 11.93 52.68
1974 9.57 6.70 8.04 2.81 2.63 1.18 2.82 0.06 0.40 2.44 7.21 6.87 50.73
1975 8.28 5.51 5.67 2.44 1.93 2.12 0.73 3.31 0.00 6.25 5.53 7.79 49.56
1976 6.33 8.11 3.64 3.55 2.12 0.67 0.87 2.30 1.25 1.20 0.93 1.69 32.66
1977 1.65 3.52 4.20 0.77 4.31 1.41 0.68 3.01 3.41 2.92 7.17 11.49 44.54
1978 5.96 4.53 1.88 5.84 4.45 1.71 1.53 2.36 2.88 0.61 4.73 3.27 39.75
1979 2.90 8.99 3.30 3.94 2.49 0.70 0.52 0.98 3.14 5.70 3.75 7.73 44.14
1980 11.38 4.38 3.71 3.91 1.30 3.79 0.18 0.22 1.65 1.56 7.60 12.61 52.29
1981 1.84 4.51 3.13 2.55 1.83 4.52 0.28 0.00 2.84 4.79 5.49 11.42 43.20
1982 7.76 8.22 a 5.18 4.37 1.06 0.95 0.22 1.27 3.76 4.25 5.42 10.39 52.85
1983 8.70 8.93 7.87 2.50 2.11 0.00 z 4.24 2.57 0.53 a 2.16 9.82 6.78 56.21
1984 3.29 5.53 0.00 z 3.82 5.19 4.60 0.00 0.03 0.00 z 6.24 12.34 4.27 45.31
1985 0.46 3.64 a 4.39 1.38 0.93 2.51 0.43 0.52 2.65 3.59 6.47 3.05 a 30.02
1986 6.56 b 7.99 3.19 2.40 2.89 a 0.57 1.92 0.00 k 0.93 w 2.08 a 6.93 a 0.00 z 34.53
1987 8.00 4.44 6.00 2.71 2.11 a 0.49 1.62 a 0.23 0.84 0.29 2.25 10.77 a 39.75
1988 9.17 2.04 4.91 5.85 3.58 a 1.94 0.59 0.08 1.51 a 0.18 11.24 3.43 44.52
1989 5.18 3.18 6.78 b 2.02 2.23 1.05 0.58 1.45 1.10 2.25 a 3.69 3.98 33.49
1990 9.65 a 4.58 a 2.78 2.59 1.92 a 2.46 a 0.48 1.00 0.47 5.94 b 4.94 3.31 40.12
1991 3.50 4.26 3.71 4.63 4.40 2.32 0.06 1.61 0.15 2.98 7.65 5.99 41.26
1992 5.24 a 4.48 1.12 5.10 0.16 0.41 0.26 0.76 1.86 4.19 4.46 6.51 a 34.55
1993 3.74 1.11 5.24 a 6.15 4.24 1.73 a 2.23 a 0.23 a 0.00 1.43 a 1.91 6.48 a 34.49
1994 5.38 a 6.33 a 4.12 2.14 1.71 1.53 0.08 0.00 1.10 7.22 a 8.74 a 6.62 44.97
1995 7.61 5.44 4.23 3.88 1.54 1.97 a 0.76 1.62 2.93 a 4.82 11.00 a 8.36 a 54.16
1996 9.17 12.05 a 3.86 5.63 5.00 a 0.91 0.63 0.11 2.25 a 5.33 a 9.96 b 16.13 a 71.03
1997 8.45 b 2.20 b 8.63 4.91 2.37 a 2.38 a 1.01 1.54 4.02 5.70 b 3.97 a 3.47 48.65
1998 8.91 b 4.86 f 4.68 1.19 b 4.99 1.03 a 0.43 0.02 1.13 4.21 c 11.32 9.74 47.65
1999 9.14 10.01 5.60 3.43 3.41 1.78 0.20 0.84 0.19 2.70 b 0.00 z 5.01 a 42.31
2000 4.86 h 6.29 e 3.08 d 2.26 c 3.25 j 1.41 a 0.46 b 0.02 0.48 c 3.88 b 2.50 d 2.98 c 23.36
2001 1.25 e 1.33 b 5.02 b 2.62 d 1.60 1.61 e 0.73 c 1.05 0.80 a 2.85 c 6.52 c 9.54 b 34.92
2002 8.83 d 3.96 5.55 c 3.58 a 1.50 b 2.09 b 0.37 0.29 0.49 h 0.47 2.81 e 10.18 c 39.63
2003 7.69 d 3.86 a 7.85 f 5.58 c 0.52 e 0.70 c 0.00 0.00 z 1.02 3.02 c 6.20 a 9.30 37.89
2004 5.98 b 3.33 0.00 z 1.74 a 2.38 a 2.15 0.15 3.20 1.67 b 5.62 a 1.89 4.35 32.46
2005 2.26 b 0.78 5.43 3.13 a 4.57 b 2.06 c 0.57 0.50 h 1.58 a 3.19 b 6.91 a 9.91 40.39
2006 13.20 b 2.90 b 4.17 a 3.03 a 0.00 z 1.01 0.09 a 0.06 b 1.75 b 1.59 b 12.41 b 1.69 f 40.21
2007 0.76 c 2.13 b 1.69 b 1.59 a 0.61 0.49 e 0.32 a 0.00 0.32 6.14 h 5.90 b 9.50 e 23.31
2008 7.92 b 3.53 a 5.80 f 3.38 e 0.00 z 1.44 b 0.00 z 1.53 b 0.45 a 0.00 z 7.34 a 3.43 e 29.02
2009 6.86 3.22 a 4.88 1.38 0.98 1.05 0.17 a 0.69 1.60 2.81 a 6.70 b 5.23 a 35.57
2010 5.39 a 3.65 6.04 a 4.16 b 3.52 a 3.72 b 0.22 0.17 2.94 b 5.73 a 7.91 11.43 54.88
2011 5.35 5.17 8.25 c 5.58 3.32 1.48 1.10 0.00 a 1.04 0.00 z 9.14 4.30 b 44.73
2012 9.24 b 3.11 c 9.43 f 4.84 3.15 3.54 b 0.79 e 0.00 g 0.09 7.92 9.00 a 9.74 51.42
2013 3.54 2.48 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 6.02
Period of Record Statistics
MEAN 7.12 5.01 4.95 3.36 2.51 1.85 0.65 0.99 1.91 3.71 6.85 7.44 47.35
S.D. 3.50 2.70 2.10 1.66 1.26 1.14 0.75 1.17 1.33 2.08 3.10 3.38 8.55
SKEW 0.22 0.82 0.55 0.68 0.51 0.74 2.33 1.59 0.54 0.37 0.12 0.66 0.22
MAX 16.77 13.09 12.06 9.44 5.80 4.60 4.24 5.16 5.76 10.34 14.21 18.71 71.03
MIN 0.46 0.40 1.01 0.68 0.16 0.01 0.00 0.00 0.00 0.03 0.70 1.69 30.02
NO YRS 85 85 81 86 73 74 75 72 73 83 86 85 60