WATERLOO, OREGON

Monthly Total Precipitation (inches)

(359083)

File last updated on Apr 4, 2013
*** Note *** Provisional Data *** After Year/Month 201203
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
1923 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 1.55 6.95 d 2.95 b 7.06 18.51
1924 2.57 f 4.61 2.36 1.39 0.70 0.00 z 0.00 z 0.00 z 0.00 z 6.66 q 10.04 3.99 23.09
1925 4.94 5.66 3.10 3.95 1.86 1.11 0.00 z 0.99 3.22 z 0.00 5.54 4.07 31.22
1926 3.52 8.96 0.85 0.93 2.87 0.33 0.15 1.90 1.80 4.67 11.02 i 4.86 30.84
1927 9.56 8.49 j 4.27 2.32 2.95 2.82 v 0.00 0.42 5.94 0.00 z 0.00 z 1.30 26.76
1928 4.47 1.76 7.71 r 5.21 1.06 0.33 0.00 z 0.00 1.49 2.58 7.99 8.40 33.29
1929 2.03 0.52 3.70 4.77 n 0.80 2.26 0.00 0.04 0.22 1.32 0.62 10.79 l 11.51
1930 1.37 4.74 1.75 3.55 3.39 1.78 0.02 0.00 1.96 2.49 3.85 3.61 28.51
1931 4.45 3.13 6.14 3.41 0.96 3.79 0.00 0.00 1.65 4.03 8.47 9.69 45.72
1932 6.80 2.80 6.74 3.94 4.38 0.43 0.21 0.48 0.23 3.70 4.25 5.53 39.49
1933 5.87 e 4.99 5.78 1.58 3.83 1.37 0.00 0.45 2.41 a 2.86 1.90 9.94 40.98
1934 3.13 n 1.24 4.15 3.68 2.89 1.43 0.23 0.52 1.15 4.35 9.91 7.50 37.05
1935 0.00 z 3.49 5.37 3.05 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 5.38 17.29
1936 8.72 5.42 j 2.99 2.12 0.00 z 0.00 z 0.00 z 0.00 0.00 z 0.29 0.30 5.53 19.95
1937 5.32 10.66 3.49 i 9.18 f 2.44 5.82 0.01 0.97 0.92 4.93 10.35 10.09 51.51
1938 5.29 7.45 10.44 3.86 1.79 0.24 0.35 0.05 1.50 3.32 s 5.44 4.86 41.27
1939 5.71 5.56 3.62 0.69 2.18 1.81 1.03 0.94 1.34 3.30 1.33 7.75 35.26
1940 3.72 12.43 5.35 1.96 1.66 0.26 0.65 0.01 4.58 5.25 6.46 5.59 j 42.33
1941 4.81 1.75 2.35 2.16 o 5.09 1.78 0.08 1.53 4.27 3.83 8.27 10.58 44.34
1942 4.90 4.73 2.36 1.91 5.27 2.23 0.89 0.09 0.03 1.77 13.82 11.36 49.36
1943 7.31 4.36 4.81 5.51 1.91 3.62 0.56 2.05 0.15 6.35 2.98 2.18 41.79
1944 3.77 3.87 2.21 3.99 1.47 1.74 0.07 0.02 2.23 1.07 6.14 2.56 29.14
1945 4.51 5.72 7.90 4.35 4.77 0.31 0.41 0.37 3.10 1.94 12.76 6.62 52.76
1946 6.05 5.34 h 6.80 1.97 1.06 1.88 0.72 0.20 1.67 4.82 8.70 4.90 38.77
1947 3.49 k 2.80 5.82 3.71 0.28 5.51 0.00 z 0.69 1.26 11.97 6.12 4.53 42.69
1948 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 2.79 7.16 10.72 20.67
1949 0.51 14.88 3.93 2.06 2.90 0.66 0.00 z 0.00 z 0.00 z 0.00 5.20 a 4.22 34.36
1950 9.71 a 4.61 3.30 0.00 z 0.00 z 0.02 g 0.05 0.00 z 0.00 z 4.02 z 10.36 4.78 32.81
1951 7.62 5.70 5.83 1.01 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 7.23 8.05 8.42 43.86
1952 5.06 4.88 4.80 1.48 0.99 0.00 z 0.00 z 0.02 0.66 0.45 1.15 8.24 27.73
1953 12.16 6.26 4.72 2.48 6.20 2.65 0.00 2.08 0.63 4.98 8.84 9.10 60.10
1954 12.22 4.63 3.36 3.83 1.43 2.96 0.30 1.70 2.06 3.87 5.89 7.32 49.57
1955 2.96 2.49 5.84 6.50 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 5.40 q 15.75 33.54
1956 10.88 5.68 5.75 1.68 3.38 2.75 0.03 0.67 1.18 7.88 1.53 4.47 45.88
1957 3.32 6.23 8.04 2.62 4.29 1.43 0.28 0.62 1.13 4.02 3.13 11.46 46.57
1958 9.93 7.10 2.88 3.84 1.43 4.43 0.00 0.13 2.25 2.03 10.09 5.22 49.33
1959 13.09 4.39 4.94 1.89 4.95 1.52 0.82 0.07 2.96 2.94 2.66 4.23 44.46
1960 4.64 6.01 8.76 4.50 6.08 0.42 0.00 1.02 0.39 2.75 11.56 3.19 49.32
1961 5.09 11.92 8.21 2.32 2.81 0.95 0.66 0.20 1.76 3.72 6.94 6.74 51.32
1962 1.79 3.65 6.54 3.58 3.60 0.92 0.00 1.48 1.96 4.78 6.63 3.69 38.62
1963 1.66 5.91 6.85 5.04 4.84 2.21 1.11 0.44 1.65 3.61 8.40 3.27 44.99
1964 11.77 1.48 4.18 2.07 1.41 0.00 z 0.71 1.68 0.51 1.45 7.92 15.48 48.66
1965 9.77 1.83 0.75 3.41 1.80 0.41 0.29 1.49 0.08 3.13 7.17 8.19 38.32
1966 8.84 2.20 5.91 1.02 0.87 1.04 0.71 0.05 1.54 2.89 8.83 7.19 41.09
1967 8.49 2.37 4.13 3.08 1.52 1.01 0.00 0.00 1.29 6.80 2.94 6.35 37.98
1968 6.68 7.06 3.02 1.63 4.10 1.60 0.14 5.52 2.79 4.85 6.84 9.20 53.43
1969 9.43 3.34 3.16 2.55 1.83 4.57 0.18 0.04 1.80 5.20 3.04 8.73 43.87
1970 11.32 4.80 3.03 3.49 1.45 0.77 0.06 0.05 2.23 3.17 7.52 9.24 47.13
1971 8.49 5.44 7.46 4.98 1.91 3.50 0.09 1.53 3.84 3.53 8.74 6.31 55.82
1972 7.47 5.75 7.77 6.57 3.20 1.19 0.06 1.12 2.48 1.29 4.18 9.63 50.71
1973 5.71 2.02 4.17 1.82 1.33 2.12 0.00 0.80 2.77 2.34 16.35 10.73 50.16
1974 9.43 7.06 8.82 2.52 1.37 0.81 1.29 0.52 0.28 2.30 5.81 8.60 48.81
1975 5.84 5.79 5.34 2.14 2.63 1.15 0.33 2.34 0.00 6.62 6.05 5.69 43.92
1976 6.81 5.99 4.42 3.28 2.62 1.01 0.77 2.52 1.37 1.38 2.22 1.77 34.16
1977 1.27 3.28 5.18 1.43 4.59 1.39 0.42 2.34 2.11 2.44 7.44 9.56 41.45
1978 6.92 3.11 1.30 5.06 2.62 1.32 0.84 3.52 2.71 0.82 5.13 4.11 37.46
1979 2.47 8.71 2.93 3.72 2.10 0.50 0.21 1.87 0.78 7.38 5.13 6.88 42.68
1980 5.92 b 4.41 4.64 3.56 1.53 3.34 0.34 0.08 1.54 1.90 6.55 11.52 45.33
1981 2.04 5.61 4.06 2.83 3.38 3.55 0.16 0.00 2.21 4.88 5.91 12.18 46.81
1982 7.02 6.72 3.69 3.33 0.72 2.53 0.97 1.13 2.37 3.98 5.01 9.22 46.69
1983 6.94 10.32 7.74 2.75 2.05 3.42 2.84 m 2.60 0.33 2.00 9.73 4.63 i 47.88
1984 2.45 5.81 5.17 4.73 4.38 5.07 0.15 0.00 1.10 4.97 14.78 3.64 52.25
1985 0.59 4.70 4.51 1.59 0.53 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 4.38 3.83 20.13
1986 7.63 9.87 3.42 2.72 0.00 z 0.00 z 0.00 z 0.00 z 4.57 2.24 9.41 2.86 42.72
1987 6.68 3.84 5.49 2.21 3.19 0.56 2.14 0.10 0.35 0.15 4.52 10.16 g 29.23
1988 7.67 1.35 4.58 6.37 4.00 2.53 0.42 0.00 1.73 0.28 12.32 3.41 44.66
1989 4.77 2.78 8.52 1.49 2.61 1.37 0.39 1.90 1.04 2.36 3.70 2.46 33.39
1990 8.01 4.40 2.98 2.00 2.79 1.81 0.95 1.92 0.62 7.23 6.63 3.66 43.00
1991 2.74 4.03 6.39 3.82 5.86 2.35 0.29 0.66 0.40 3.06 7.49 4.79 41.88
1992 4.58 4.74 1.45 6.13 0.56 2.24 0.69 0.33 1.29 3.19 6.36 7.38 38.94
1993 4.88 2.37 6.62 7.59 5.76 4.03 1.54 0.74 0.00 1.67 2.13 5.59 42.92
1994 4.72 3.82 4.17 3.00 1.21 2.50 0.09 0.01 1.26 5.15 10.62 5.64 42.19
1995 8.98 4.03 5.11 5.24 2.27 2.65 0.78 1.06 2.93 4.20 6.38 9.44 53.07
1996 10.02 11.02 1.98 5.93 4.86 1.46 1.16 0.23 2.10 6.22 10.86 15.58 a 71.42
1997 7.49 3.52 8.17 b 3.19 a 2.13 2.45 0.57 1.32 3.86 5.26 a 4.33 2.19 44.48
1998 8.67 5.86 4.81 3.31 6.91 1.52 0.16 0.00 0.88 3.40 10.46 10.15 56.13
1999 8.42 10.07 5.58 2.49 3.47 1.21 0.10 0.74 0.00 2.55 8.23 5.32 48.18
2000 8.50 7.12 3.63 2.16 3.21 1.54 0.22 0.05 0.80 3.38 2.47 4.66 37.74
2001 2.76 1.78 3.82 3.23 1.69 2.19 0.34 0.19 0.68 3.95 8.65 7.77 c 37.05
2002 8.65 c 4.01 5.36 a 2.66 1.93 1.67 0.05 0.24 1.01 1.71 4.24 12.26 43.79
2003 7.41 3.95 6.92 6.86 a 1.31 a 0.31 0.00 0.37 1.67 2.57 5.74 11.02 d 48.13
2004 7.69 i 4.71 1.92 a 2.21 2.00 3.15 0.33 2.72 2.28 3.96 b 3.62 4.34 c 31.24
2005 1.80 a 1.34 4.43 4.16 5.47 3.06 0.29 0.42 0.94 4.37 6.82 a 10.38 g 33.10
2006 13.80 3.40 4.76 b 3.73 a 0.00 z 1.07 0.19 0.00 1.36 1.75 15.98 7.90 b 53.94
2007 4.02 c 6.12 a 3.54 b 3.27 1.38 0.97 0.58 a 0.78 1.91 5.40 4.97 7.76 d 40.70
2008 9.69 c 2.97 a 6.01 3.88 1.26 c 1.53 0.00 1.34 0.86 0.00 z 6.87 6.58 40.99
2009 8.41 4.28 4.28 2.14 3.42 1.17 0.18 0.13 1.81 0.00 z 7.11 5.57 38.50
2010 6.23 4.03 6.75 6.21 3.65 3.77 0.14 0.62 2.93 5.53 a 8.71 a 8.97 57.54
2011 3.29 3.82 9.09 4.48 4.31 1.68 1.50 0.10 0.32 2.68 5.94 4.92 42.13
2012 8.44 4.42 11.66 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 24.52
Period of Record Statistics
MEAN 6.36 5.02 4.95 3.30 2.75 1.95 0.40 0.83 1.62 3.56 6.73 6.92 45.06
S.D. 3.07 2.72 2.17 1.53 1.58 1.29 0.44 0.99 1.18 2.11 3.39 3.22 7.51
SKEW 0.16 1.21 0.53 0.69 0.64 0.96 1.55 1.93 1.11 0.88 0.52 0.61 0.58
MAX 13.80 14.88 11.66 7.59 6.91 5.82 2.14 5.52 5.94 11.97 16.35 15.75 71.42
MIN 0.51 0.52 0.75 0.69 0.28 0.24 0.00 0.00 0.00 0.00 0.30 1.30 28.51
NO YRS 83 85 86 83 80 76 74 79 79 80 85 84 57