WILLAMINA, OREGON

Monthly Total Precipitation (inches)

(359372)

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
1935 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.27 z 0.29 0.88 3.05 2.90 7.41 14.53
1936 13.58 6.09 3.57 1.09 4.09 2.05 0.73 0.00 1.22 0.16 0.36 7.59 40.53
1937 6.03 9.07 4.28 8.56 1.73 2.81 0.00 1.11 0.79 3.90 12.10 15.88 66.26
1938 5.74 9.07 8.88 1.62 0.76 0.27 0.14 0.04 0.82 3.80 5.76 4.77 41.67
1939 7.18 7.11 3.58 0.83 1.02 1.01 0.44 0.67 0.19 2.38 1.36 13.80 39.57
1940 7.20 14.58 6.38 3.23 2.70 0.12 0.27 0.01 1.87 5.09 5.74 8.32 o 47.19
1941 7.76 2.73 1.91 2.73 4.05 1.06 0.00 0.70 2.74 2.40 6.71 13.09 45.88
1942 5.22 5.84 2.57 1.93 2.55 1.11 0.89 0.16 0.00 1.84 16.61 12.82 51.54
1943 7.51 5.77 7.17 3.69 r 1.31 1.85 0.31 1.53 0.10 7.91 3.25 4.34 41.05
1944 5.32 3.22 3.28 4.21 n 1.00 1.41 0.39 0.32 1.29 2.15 5.87 3.42 27.67
1945 6.35 9.65 9.02 h 4.61 3.53 0.14 0.31 0.17 3.37 1.61 15.25 e 9.85 54.84
1946 10.20 8.46 6.49 2.53 1.75 1.34 0.45 0.00 1.33 5.77 10.15 6.77 n 48.47
1947 6.14 4.78 3.33 2.70 0.14 5.75 0.73 0.77 1.42 10.62 5.14 5.93 47.45
1948 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.83 0.62 2.86 3.39 9.63 11.18 28.51
1949 2.30 13.16 4.36 1.10 3.44 0.73 0.16 0.43 1.05 3.01 7.05 8.27 45.06
1950 14.98 7.70 7.28 2.09 0.72 a 1.42 0.46 0.61 1.61 9.53 12.16 8.76 67.32
1951 12.82 7.29 7.22 1.46 2.16 0.02 0.23 0.58 1.18 8.17 7.83 12.00 60.96
1952 8.08 a 5.69 5.56 2.10 0.53 1.13 0.00 0.32 0.41 0.51 2.32 10.16 36.81
1953 14.66 5.29 7.07 3.30 a 3.06 0.78 0.07 1.18 1.19 3.19 8.62 10.19 58.60
1954 15.10 8.50 3.41 4.24 1.25 2.74 0.30 2.94 0.84 4.06 6.54 7.93 57.85
1955 5.06 3.64 7.38 5.32 0.89 0.97 0.81 0.00 2.94 5.38 9.58 16.46 58.43
1956 15.81 8.22 7.34 0.71 0.98 0.86 0.03 0.33 1.41 7.12 2.00 5.24 50.05
1957 3.61 8.57 6.83 3.13 2.63 0.66 0.14 0.28 0.42 2.51 4.86 9.63 43.27
1958 9.09 9.93 4.38 5.45 1.03 2.06 0.00 0.02 0.87 3.19 9.12 7.17 52.31
1959 12.87 a 4.04 5.89 1.42 1.79 1.89 0.52 0.06 3.84 1.86 a 4.08 3.92 42.18
1960 6.61 8.62 7.81 4.13 3.99 0.42 0.00 0.75 0.69 4.01 12.38 a 4.32 53.73
1961 6.64 11.36 a 10.82 2.53 a 2.50 0.23 a 0.38 0.33 0.82 4.26 6.06 7.96 53.89
1962 2.98 5.35 7.34 4.75 2.23 0.72 0.05 0.72 1.77 6.26 12.63 4.15 48.95
1963 2.41 6.41 8.18 5.33 3.57 0.92 0.93 1.18 2.01 3.64 9.38 5.40 49.36
1964 13.70 2.24 6.62 1.95 0.90 0.99 0.66 0.51 0.66 1.39 8.00 18.74 56.36
1965 11.76 4.81 0.98 2.94 1.95 0.73 0.14 0.84 0.07 2.24 10.50 11.30 48.26
1966 10.63 3.88 9.52 1.52 1.15 1.09 0.34 0.25 1.51 2.71 5.83 14.23 52.66
1967 11.80 3.01 9.75 3.62 0.88 0.39 0.00 0.00 0.81 7.15 4.28 7.99 49.68
1968 8.40 9.94 6.44 1.74 2.85 2.56 0.12 3.54 1.65 7.03 9.46 16.77 70.50
1969 12.64 6.89 2.37 2.90 1.79 1.44 0.02 0.07 2.39 4.53 4.89 13.79 53.72
1970 16.05 5.89 3.62 3.62 0.84 0.41 0.02 0.03 1.58 4.98 8.43 15.00 60.47
1971 12.20 5.50 9.97 4.14 2.13 1.42 0.08 0.21 3.62 3.73 8.91 14.05 65.96
1972 10.38 6.16 7.80 5.86 1.45 0.94 0.03 0.12 3.15 1.03 5.09 11.36 53.37
1973 6.76 2.28 4.26 2.09 0.70 1.13 0.00 0.55 3.79 3.24 19.49 13.53 57.82
1974 14.84 9.65 9.29 3.22 2.33 1.07 0.84 0.02 0.17 0.72 7.56 11.54 61.25
1975 8.84 8.42 7.67 2.99 2.24 0.86 0.87 1.38 0.03 7.98 6.52 9.21 57.01
1976 7.18 9.07 5.95 2.59 0.95 0.70 0.72 1.21 0.81 1.49 1.77 1.92 34.36
1977 1.26 3.21 8.16 0.62 3.64 0.73 1.01 1.65 3.42 3.07 9.32 11.21 47.30
1978 8.89 6.34 1.92 5.21 3.76 1.01 1.02 2.40 4.15 0.94 3.49 4.44 43.57
1979 3.55 9.78 3.14 3.44 3.01 0.69 0.62 0.82 2.08 7.26 4.93 10.29 49.61
1980 11.39 6.63 5.47 5.10 0.64 1.60 0.43 0.08 0.89 1.47 7.98 11.91 53.59
1981 2.84 4.75 4.48 4.11 3.13 3.98 0.14 0.08 2.60 6.56 7.40 14.64 54.71
1982 7.98 9.13 5.86 7.53 0.20 1.60 0.66 0.34 1.93 5.42 6.55 14.22 61.42
1983 9.68 13.09 11.98 2.72 2.78 1.50 1.40 0.88 0.43 1.05 13.43 8.80 67.74
1984 4.31 7.53 5.09 4.18 3.89 2.38 0.11 0.07 1.50 5.94 16.09 5.44 56.53
1985 0.38 4.20 4.92 2.03 0.75 4.21 0.28 0.45 2.37 4.07 5.28 4.07 33.01
1986 8.96 7.71 4.56 3.04 1.37 0.55 1.27 0.02 3.02 3.05 7.27 6.38 47.20
1987 8.07 7.69 8.83 1.53 2.05 0.19 2.39 2.16 0.31 0.12 3.18 13.69 50.21
1988 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
1989 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 1.17 0.47 0.63 0.72 3.16 0.00 z 4.25 10.40
1990 13.41 b 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 3.92 4.90 3.74 25.97
1991 3.66 4.79 5.65 6.97 b 2.63 2.04 0.18 0.37 0.06 0.00 z 7.80 4.05 38.20
1992 5.93 6.07 1.22 5.74 0.00 0.60 0.28 0.42 1.63 3.28 6.96 8.64 40.77
1993 5.01 1.01 4.31 5.46 4.21 1.52 1.23 0.10 0.02 1.66 1.35 9.27 35.15
1994 5.51 2.83 b 3.92 2.67 0.93 2.18 0.01 0.00 1.36 5.28 10.86 9.94 45.49
1995 10.25 4.77 7.70 5.03 1.09 1.95 0.07 0.88 2.21 3.42 11.60 9.33 58.30
1996 10.99 14.32 3.25 7.85 4.05 0.72 0.53 0.19 2.91 5.42 12.10 22.00 84.33
1997 8.88 2.82 7.75 a 3.39 a 2.89 2.13 0.24 0.93 2.88 6.65 7.11 4.73 50.40
1998 10.84 8.11 5.96 2.61 4.72 0.78 0.01 0.00 0.87 3.25 12.86 11.96 61.97
1999 10.62 17.61 6.15 1.28 3.46 0.87 0.11 0.21 0.32 2.65 13.18 7.87 64.33
2000 6.39 6.28 2.95 0.00 z 2.72 1.38 0.15 0.00 0.59 2.41 3.67 5.05 31.59
2001 2.22 3.10 2.47 1.98 1.80 1.35 0.20 0.58 0.00 z 2.88 8.54 11.61 b 36.73
2002 12.73 4.24 a 6.26 3.01 0.62 c 0.74 0.17 0.00 0.89 0.58 5.09 13.27 47.60
2003 9.41 3.29 9.72 5.59 b 1.17 0.02 0.00 0.07 1.03 2.61 5.48 12.78 51.17
2004 8.37 6.25 2.75 a 2.88 3.16 1.03 0.00 1.48 2.79 4.48 2.33 4.50 a 40.02
2005 3.14 1.10 5.74 3.56 3.99 1.93 0.19 0.00 1.09 4.58 6.73 a 13.03 45.08
2006 14.19 2.81 5.00 a 2.67 0.00 z 0.70 0.05 0.00 0.44 1.65 16.45 a 9.58 a 53.54
2007 6.07 a 10.04 a 1.47 b 2.72 1.13 0.65 0.70 0.57 0.00 z 4.33 4.93 14.49 a 47.10
2008 10.46 0.00 z 6.43 3.57 0.47 1.30 0.00 a 0.71 0.71 2.87 0.00 z 7.38 33.90
2009 5.15 3.75 5.37 1.95 0.00 z 0.72 0.00 z 0.67 1.05 4.40 8.91 4.55 36.52
2010 0.00 z 3.65 7.01 5.49 2.21 2.71 0.05 0.50 2.04 3.99 7.30 11.54 46.49
2011 5.51 5.88 7.51 d 5.05 e 2.72 0.24 g 1.08 0.01 0.51 2.60 7.49 3.96 42.32
2012 10.73 4.75 6.30 l 3.14 0.00 z 2.21 0.06 0.00 z 0.00 7.91 9.74 0.00 z 38.54
2013 0.00 z 2.32 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 2.32
Period of Record Statistics
MEAN 8.40 6.54 5.77 3.40 2.07 1.31 0.39 0.56 1.45 3.84 7.69 9.51 52.11
S.D. 3.89 3.30 2.45 1.75 1.22 0.98 0.43 0.68 1.09 2.26 3.96 4.24 9.85
SKEW 0.09 0.87 0.13 0.79 0.28 1.92 1.82 2.15 0.70 0.72 0.63 0.35 0.49
MAX 16.05 17.61 11.98 8.56 4.72 5.75 2.39 3.54 4.15 10.62 19.49 22.00 84.33
MIN 0.38 1.01 0.98 0.62 0.00 0.02 0.00 0.00 0.00 0.12 0.36 1.92 33.01
NO YRS 73 73 71 70 70 73 74 75 74 76 75 74 58