FOREST GROVE, OREGON

Monthly Total Precipitation (inches)

(352997)

File last updated on Apr 4, 2013
*** Note *** Provisional Data *** After Year/Month 201304
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
1893 2.42 5.17 e 4.53 a 4.19 b 1.35 1.58 0.02 0.00 z 0.45 7.24 12.17 5.77 44.89
1894 11.69 7.73 9.72 2.61 1.53 1.97 0.00 z 0.00 z 0.00 z 5.19 4.74 6.10 a 51.28
1895 11.93 1.36 2.99 3.33 6.26 0.00 z 0.00 z 0.00 z 0.00 z 0.12 5.01 14.76 45.76
1896 10.84 4.14 2.46 5.21 5.35 0.60 0.00 z 0.00 z 0.62 2.78 18.37 10.45 60.82
1897 4.10 7.98 8.45 2.04 0.52 1.79 0.00 z 0.00 z 3.50 2.69 13.74 14.63 59.44
1898 3.85 7.87 2.03 2.97 r 2.48 0.00 z 0.00 z 0.00 z 0.00 z 1.59 6.85 5.81 30.48
1899 8.58 7.08 3.58 4.47 2.79 0.00 z 0.00 z 0.00 z 0.00 z 5.53 14.22 5.73 51.98
1900 5.74 4.33 5.40 2.10 3.74 0.20 0.00 z 0.00 z 0.00 z 6.01 6.81 9.40 43.73
1901 9.81 7.99 5.17 5.08 3.49 0.00 z 0.00 z 0.00 z 0.00 z 1.35 8.78 4.82 46.49
1902 5.19 14.29 6.76 3.24 2.73 0.00 z 0.00 z 0.00 z 0.00 z 2.15 13.59 11.92 59.87
1903 9.59 2.37 5.69 2.70 1.57 1.24 0.22 0.99 0.34 2.95 11.75 3.72 43.13
1904 7.89 14.96 c 11.62 2.78 0.20 0.02 0.53 0.00 0.50 2.61 11.13 h 13.49 54.60
1905 3.57 3.20 6.74 1.49 1.54 1.98 0.00 0.06 2.98 4.61 3.44 7.08 36.69
1906 7.80 7.45 4.03 2.21 2.43 2.90 0.00 0.00 1.81 3.95 9.86 9.19 51.63
1907 8.11 4.52 2.52 3.20 1.00 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 19.35
1908 5.89 4.85 3.89 0.95 2.89 0.00 z 0.00 z 1.00 0.19 5.05 5.64 5.37 35.72
1909 10.36 j 11.94 d 3.17 0.85 1.28 0.54 1.95 0.00 z 0.91 3.68 14.53 5.08 43.93
1910 12.45 f 7.13 1.09 3.19 1.89 0.00 z 0.00 z 0.00 z 0.00 z 3.96 13.76 5.39 36.41
1911 8.26 3.73 0.70 2.59 4.42 0.00 z 0.00 0.60 4.56 1.68 3.80 5.36 35.70
1912 11.97 s 6.62 2.92 3.24 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 12.78
1913 7.61 0.24 5.35 2.42 1.62 4.54 0.38 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 22.16
1914 0.00 z 0.00 z 3.32 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 3.32
1915 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
1916 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 2.02 2.07 t 0.37 z 0.83 t 1.48 s 5.40 6.10 b 13.52
1917 2.35 d 2.99 b 7.91 5.33 a 2.28 0.92 0.00 0.00 1.62 0.00 3.76 c 15.49 42.65
1918 5.31 7.85 4.14 1.40 1.32 0.07 0.95 0.71 0.50 3.87 5.97 5.51 37.60
1919 11.10 10.25 5.60 4.25 e 1.93 j 0.89 0.06 0.12 3.22 1.09 5.39 j 6.65 m 36.58
1920 3.39 0.19 v 4.73 4.17 h 0.49 q 1.83 q 1.21 1.29 4.40 5.36 h 7.72 k 10.47 25.49
1921 9.50 e 6.92 f 6.81 h 1.73 i 1.59 1.21 0.02 0.12 2.10 4.80 10.79 3.88 34.01
1922 3.04 4.98 f 7.90 2.48 1.27 0.17 0.00 2.09 1.92 4.17 2.55 13.52 39.11
1923 12.31 3.25 2.07 1.94 1.14 1.72 1.30 0.03 0.76 1.77 3.43 7.26 36.98
1924 4.67 5.19 c 1.42 0.76 0.66 0.22 0.02 0.69 1.99 7.46 j 8.37 5.44 29.43
1925 7.96 9.68 1.34 1.81 1.18 0.78 0.00 0.58 1.88 0.00 6.28 5.08 36.57
1926 4.01 8.54 0.75 0.25 3.21 0.75 0.00 1.96 1.58 5.98 11.38 6.65 h 38.41
1927 11.19 10.00 2.50 1.51 3.00 1.90 0.49 0.22 3.92 3.09 9.66 3.71 51.19
1928 7.51 1.88 10.04 6.04 0.47 0.78 0.22 0.00 0.99 2.18 6.17 8.64 m 36.28
1929 3.51 0.80 2.40 4.02 0.87 2.05 0.09 0.24 0.19 0.86 0.53 9.55 f 15.56
1930 4.23 6.93 1.65 2.93 2.77 0.84 0.02 0.03 2.02 1.28 3.46 3.07 29.23
1931 7.43 3.79 8.00 a 2.04 0.67 3.98 0.00 0.00 2.63 5.71 7.60 11.86 53.71
1932 7.22 3.47 6.86 3.41 1.40 0.25 0.48 0.21 0.10 2.68 10.46 8.92 45.46
1933 8.94 3.99 6.42 0.44 3.55 1.97 0.02 0.63 2.55 3.10 1.69 18.73 52.03
1934 7.00 1.85 3.40 2.25 1.41 0.39 0.02 0.24 1.41 7.38 14.44 10.64 50.43
1935 6.36 3.84 7.09 2.04 0.23 0.22 0.71 0.14 1.65 2.76 2.88 6.82 34.74
1936 12.02 7.80 3.62 1.24 3.80 2.58 0.57 0.15 0.75 0.33 a 0.40 9.46 42.72
1937 5.27 8.18 4.48 6.99 1.63 3.41 0.08 0.89 1.68 1.62 12.00 15.26 61.49
1938 5.96 8.20 10.49 1.78 0.50 0.06 0.29 0.28 1.42 4.08 4.91 5.20 a 43.17
1939 6.15 6.52 2.64 0.38 0.89 0.99 0.27 0.98 0.06 b 2.26 1.99 12.41 35.54
1940 4.72 13.45 5.37 2.74 a 2.28 0.05 1.05 0.08 3.36 4.79 4.98 6.59 49.46
1941 8.21 2.08 2.17 2.27 3.82 1.19 0.05 1.79 2.63 2.42 5.75 11.82 44.20
1942 5.08 4.81 2.26 1.97 2.59 1.51 0.97 0.33 0.01 2.68 14.18 11.17 47.56
1943 5.90 4.82 7.28 2.85 1.43 2.19 0.32 1.36 0.06 6.25 a 3.10 4.37 39.93
1944 4.30 3.68 3.21 3.74 0.85 0.67 1.54 0.18 2.56 1.50 5.30 a 2.60 30.13
1945 4.68 7.11 a 7.50 2.48 3.69 0.15 0.17 0.14 3.41 1.69 13.27 8.27 52.56
1946 7.86 a 7.35 5.68 1.41 1.55 1.77 a 0.95 0.11 0.96 4.60 9.48 7.24 a 48.96
1947 5.55 3.79 a 5.31 1.59 0.11 2.77 0.62 a 0.95 0.98 10.90 a 4.09 4.36 41.02
1948 7.54 7.48 4.28 a 4.26 a 4.86 0.80 0.41 0.78 2.61 2.30 8.39 10.38 54.09
1949 1.54 10.78 3.34 0.40 3.17 0.25 0.64 0.07 0.63 2.22 6.56 b 6.44 36.04
1950 10.19 6.83 6.28 1.81 0.42 1.52 0.49 0.83 1.01 9.37 9.48 8.46 56.69
1951 10.83 5.29 4.58 0.96 1.58 0.04 0.09 a 0.43 2.47 5.50 8.50 8.37 48.64
1952 6.64 5.53 4.62 1.39 0.57 2.26 0.00 0.18 0.36 0.70 2.09 10.08 34.42
1953 15.68 4.63 5.00 a 2.48 2.90 1.23 0.06 1.43 0.92 a 3.58 6.33 7.15 51.39
1954 14.78 7.65 2.83 3.28 1.02 2.00 0.26 0.94 1.69 3.36 6.62 6.23 b 50.66
1955 4.10 4.00 4.67 4.07 0.63 a 1.09 1.11 0.00 2.50 6.95 10.38 12.34 51.84
1956 13.20 4.17 7.29 0.63 0.96 1.70 0.03 1.29 1.63 5.10 1.90 4.81 42.71
1957 2.97 6.14 6.97 1.93 2.24 1.25 a 0.08 0.42 0.65 3.17 a 3.19 10.51 39.52
1958 9.04 8.13 2.49 3.82 1.20 2.48 0.00 0.00 0.84 2.47 7.72 6.34 44.53
1959 11.51 4.41 3.94 1.06 2.57 2.18 1.01 0.04 2.48 2.37 3.96 4.59 40.12
1960 5.47 6.26 5.96 4.00 3.80 0.40 0.00 0.91 0.38 3.88 10.63 3.45 45.14
1961 6.57 11.16 8.61 2.96 2.00 0.16 0.40 0.41 0.61 5.38 5.21 7.34 50.81
1962 1.38 4.14 5.31 4.20 2.27 0.46 0.04 1.75 1.91 6.00 11.28 3.08 41.82
1963 2.07 4.33 6.50 3.62 2.37 1.73 0.96 1.99 1.12 3.34 6.54 4.95 39.52
1964 14.75 0.77 4.32 1.07 0.89 1.34 0.55 0.36 1.33 1.29 9.44 13.01 49.12
1965 7.89 2.01 0.58 1.99 1.20 0.69 0.32 0.89 0.00 1.88 7.84 9.19 34.48
1966 8.32 2.47 7.93 0.45 1.19 1.32 0.97 0.54 1.69 3.85 6.99 11.21 46.93
1967 10.02 1.93 5.66 2.83 0.79 0.91 0.00 0.02 0.88 5.67 3.16 6.78 38.65
1968 8.31 8.57 5.07 1.26 3.17 1.92 0.19 4.02 2.94 5.63 7.29 12.69 61.06
1969 8.93 3.92 1.01 2.07 1.58 1.59 0.01 0.00 2.22 5.25 3.37 10.63 40.58
1970 14.04 5.12 2.83 2.70 1.02 0.36 0.05 0.04 1.12 3.80 6.37 13.59 51.04
1971 8.72 4.72 8.21 3.71 1.01 1.58 0.23 0.64 2.80 3.04 7.92 10.88 53.46
1972 8.90 5.09 7.18 4.22 1.05 0.67 0.26 0.26 3.04 0.62 4.78 10.93 47.00
1973 5.41 2.36 3.29 1.37 1.49 1.28 0.06 0.86 2.72 3.50 15.97 12.35 50.66
1974 10.19 6.68 7.85 2.92 1.40 0.76 1.18 0.10 0.05 1.56 7.50 8.12 48.31
1975 9.85 6.79 4.79 1.53 1.80 0.44 0.42 1.63 0.00 7.23 6.30 7.23 48.01
1976 6.86 7.31 5.37 2.27 1.29 0.75 0.60 2.27 0.76 0.99 2.14 1.57 32.18
1977 1.44 3.08 4.74 0.39 2.99 0.98 0.59 2.93 3.37 2.73 6.94 10.94 41.12
1978 7.16 5.80 2.31 4.49 2.55 0.63 a 0.99 1.73 3.29 0.53 4.10 2.57 36.15
1979 3.19 7.74 2.62 2.56 1.88 0.47 0.17 1.01 2.53 5.23 3.99 7.63 39.02
1980 7.91 6.11 3.57 3.70 1.38 1.56 0.28 0.00 1.14 1.46 7.77 11.10 45.98
1981 2.45 5.48 2.79 2.53 2.10 2.95 0.11 0.25 3.31 5.46 5.88 12.20 45.51
1982 6.66 7.74 3.81 5.30 0.55 1.42 0.44 1.66 2.53 5.06 6.03 12.08 53.28
1983 7.61 11.77 8.19 2.68 1.34 2.96 2.32 1.33 0.77 1.23 13.35 6.38 59.93
1984 2.71 5.70 4.19 3.66 3.17 3.33 0.00 0.00 0.92 4.37 12.88 3.84 44.77
1985 0.44 3.46 4.58 1.06 0.48 2.82 0.38 0.96 1.54 3.87 3.54 a 2.30 25.43
1986 7.97 6.77 3.71 1.51 1.84 0.49 0.75 0.00 3.40 3.26 7.64 5.78 43.12
1987 8.36 0.00 z 8.05 1.73 0.00 z 0.00 z 1.14 0.36 0.26 0.00 z 4.50 10.86 35.26
1988 8.21 1.46 3.67 2.06 2.46 2.18 0.07 0.01 0.81 0.14 10.80 e 3.94 35.81
1989 4.29 3.98 6.80 1.09 1.43 0.78 0.42 0.77 0.44 2.39 3.59 3.48 29.46
1990 12.25 5.96 2.20 1.85 2.66 1.63 0.34 0.91 0.45 4.19 4.22 2.74 a 39.40
1991 3.35 4.26 4.73 6.67 2.26 1.41 0.27 0.38 0.27 1.50 5.10 4.19 34.39
1992 6.39 3.73 1.18 4.73 0.04 0.80 0.45 0.41 1.41 2.63 5.17 7.98 34.92
1993 5.46 0.80 5.50 c 6.26 3.83 1.63 1.43 0.17 0.00 1.12 1.30 9.03 36.53
1994 4.39 6.03 2.53 1.76 2.26 0.81 0.01 0.30 0.64 5.02 8.42 9.87 42.04
1995 9.99 4.10 6.42 3.63 1.34 1.47 0.56 0.45 1.40 3.59 12.14 10.24 55.33
1996 9.89 12.91 2.11 7.96 4.77 0.81 0.57 0.38 2.33 4.84 a 7.34 17.01 70.92
1997 8.62 2.34 9.34 a 2.54 1.56 3.64 0.51 1.57 3.70 7.76 9.24 3.73 54.55
1998 12.04 8.23 5.13 1.55 4.72 1.05 0.10 0.00 0.58 3.34 14.62 11.95 63.31
1999 11.09 20.83 7.19 3.91 3.56 1.35 1.15 1.11 0.07 2.99 18.12 b 9.08 80.45
2000 10.77 8.08 5.12 1.69 2.21 g 2.44 0.04 0.20 1.93 2.86 2.74 4.75 40.62
2001 2.53 a 2.22 3.85 2.52 1.61 2.25 0.48 1.24 0.61 3.04 11.46 10.90 b 42.71
2002 10.04 3.82 4.83 2.03 1.49 1.17 0.20 0.13 0.81 a 0.41 3.64 d 13.29 b 41.86
2003 9.53 a 3.05 7.67 5.20 a 0.89 0.26 0.00 0.58 0.90 3.34 4.72 7.73 43.87
2004 7.62 b 5.20 1.55 a 3.07 1.80 0.38 a 0.11 2.06 a 1.92 4.19 2.84 4.93 35.67
2005 3.15 0.47 6.35 2.79 4.36 2.28 0.21 0.16 0.16 6.28 7.37 11.52 45.10
2006 15.42 3.42 5.10 2.57 2.43 0.78 0.20 0.02 0.52 0.91 16.69 a 8.85 56.91
2007 4.01 5.20 2.39 2.41 0.92 1.41 0.67 0.60 1.41 3.48 4.52 12.23 a 39.25
2008 7.98 3.34 4.48 2.42 0.89 0.00 z 0.02 1.07 0.25 2.38 6.14 6.19 35.16
2009 5.69 2.12 3.96 1.89 3.62 0.63 0.18 0.97 1.66 3.78 8.89 5.49 38.88
2010 8.55 4.48 5.28 4.51 3.19 3.37 0.15 0.08 1.27 3.79 6.55 12.30 53.52
2011 3.15 c 2.02 d 5.54 d 3.05 d 1.20 d 0.89 a 0.18 a 0.00 0.12 b 1.54 d 5.61 d 3.47 a 26.77
2012 2.77 j 1.85 c 8.29 S 1.40 c 2.40 b 1.53 b 0.02 0.03 0.02 5.14 b 9.03 3.07 y 29.71
2013 1.50 2.48 2.28 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 6.26
Period of Record Statistics
MEAN 7.22 5.63 4.79 2.71 2.00 1.35 0.40 0.65 1.48 3.43 7.38 8.21 44.88
S.D. 3.38 3.34 2.35 1.50 1.24 0.96 0.46 0.72 1.14 2.05 4.03 3.69 9.46
SKEW 0.27 1.32 0.42 0.91 0.90 0.89 1.62 1.73 0.63 0.71 0.65 0.37 0.74
MAX 15.68 20.83 11.62 7.96 6.26 4.54 2.32 4.02 4.56 10.90 18.37 18.73 80.45
MIN 0.44 0.24 0.58 0.25 0.04 0.02 0.00 0.00 0.00 0.00 0.40 1.57 25.43
NO YRS 114 114 118 114 112 105 104 102 106 111 112 110 87