SOURCE: National Weather Service Portland, Oregon

PORTLAND's
Monthly and Annual Precipitation Totals

Period of Record: 1871-1999 and units are inches

Year JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC Annual
1871 7.60 5.06 9.84 3.64 5.18 0.50 0.55 0.45 1.15 1.19 2.77 7.62 45.55
1872 6.56 12.13 5.28 2.96 0.92 1.52 0.20 0.13 1.26 1.80 4.67 9.47 46.90
1873 8.49 6.58 12.76 2.35 2.18 2.96 1.02 0.84 0 3.86 4.33 5.15 50.52
1874 9.46 4.28 5.15 3.68 2.38 2.68 0.19 0.83 1.70 0.36 10.22 5.24 46.17
1875 4.49 1.99 9.41 2.10 2.87 2.07 0.02 0.53 0.71 6.73 15.77 13.41 60.10
1876 4.80 7.50 9.12 5.34 1.88 2.35 0.96 0.56 1.09 10.53 9.93 0.88 54.94
1877 2.75 7.56 11.31 2.44 2.24 2.05 0.54 1.70 3.36 5.03 12.45 6.87 58.30
1878 6.67 12.16 6.23 1.85 2.17 0.13 1.10 0.50 3.54 3.22 5.61 4.52 47.70
1879 5.28 13.22 11.70 2.19 6.60 2.18 1.75 0.97 2.18 4.23 4.56 7.36 62.22
1880 12.27 5.67 4.48 2.92 3.13 1.59 0.59 1.31 1.34 1.47 3.17 13.93 51.87
1881 8.57 13.36 2.83 3.51 1.38 2.34 1.16 2.11 2.64 6.60 5.91 6.64 57.05
1882 5.06 10.49 2.53 4.60 1.84 1.91 0.95 0.07 0.91 11.63 7.11 20.14 67.24
1883 13.71 2.34 6.40 7.88 1.67 0.08 0 0.19 0.67 3.91 8.26 6.34 51.45
1884 3.70 4.88 2.25 3.57 1.34 1.42 1.80 0.33 4.25 4.01 3.24 7.52 38.31
1885 4.57 6.72 0.63 1.12 4.69 1.77 0.24 0 2.48 1.68 8.52 7.17 39.59
1886 9.37 1.96 5.39 3.16 1.32 0.67 0.32 0.03 1.19 2.87 1.00 11.52 38.76
1887 12.31 2.81 8.00 5.06 4.77 1.44 0.03 0.58 3.06 1.34 3.43 11.34 54.17
1888 8.50 2.42 2.87 2.06 0.68 5.38 1.04 0.05 1.13 4.97 4.47 5.19 38.76
1889 4.78 1.07 1.80 2.72 4.02 0.51 trace 0.90 1.61 4.59 3.97 5.79 31.76
1890 11.13 9.85 6.23 1.41 1.08 2.23 0.59 0.13 0.10 2.79 0.50 4.34 40.38
1891 3.62 6.26 2.06 4.00 1.83 4.07 0.24 0.93 2.17 5.04 5.74 11.45 47.41
1892 4.79 2.48 2.82 4.82 1.57 1.41 0.70 0.17 1.63 2.16 4.34 6.69 33.58
1893 2.12 5.19 3.48 4.89 2.30 0.99 0.14 trace 2.56 5.01 7.74 4.61 39.03
1894 9.65 5.16 7.48 2.57 1.09 2.16 0.10 trace 1.32 3.56 2.76 3.47 39.32
1895 8.53 1.01 2.84 1.91 3.42 0.57 0.23 0.37 1.16 trace 2.93 7.79 30.76
1896 6.52 3.44 2.19 4.09 3.55 1.41 trace 1.32 0.47 1.76 13.12 6.26 44.13
1897 3.25 5.57 4.00 1.76 0.90 1.35 0.65 0.26 2.79 1.99 11.65 8.84 43.01
1898 3.91 6.51 2.17 2.12 1.78 1.88 0.79 0.15 2.69 1.58 6.03 4.29 33.90
1899 6.42 4.20 2.30 3.73 3.16 0.62 0.47 2.50 1.37 3.97 7.56 5.91 42.21
1900 4.58 3.36 4.63 1.30 3.90 1.76 0.34 2.04 1.93 3.87 4.50 6.01 38.22
1901 7.80 6.52 4.12 4.05 2.41 1.39 0.12 0.17 3.57 0.75 6.14 4.01 41.05
1902 3.11 8.66 5.79 3.71 2.19 0.80 1.76 0.44 1.75 1.72 9.94 10.28 50.15
1903 5.43 1.44 4.29 2.25 1.71 2.00 0.51 0.81 1.13 2.20 10.71 3.14 35.62
1904 5.22 11.08 8.73 2.26 0.59 0.45 0.73 0.20 0.28 2.29 7.40 7.14 46.37
1905 3.66 1.77 5.03 1.71 2.56 2.12 0.12 0.19 2.79 4.73 3.01 6.41 34.10
1906 5.72 6.76 2.23 2.02 2.00 3.03 trace 0.05 2.20 3.43 8.30 7.55 43.29
1907 8.23 3.54 3.86 3.57 1.37 1.84 1.19 1.02 1.73 0.93 6.51 9.10 42.89
1908 4.73 2.85 4.39 3.38 4.66 0.67 0.05 1.34 0.23 5.17 3.10 3.80 34.37
1909 9.29 7.03 2.35 0.89 1.79 0.17 2.26 0.05 0.95 2.01 12.49 4.47 43.75
1910 6.29 6.45 2.25 3.78 1.82 1.61 trace 0.13 1.15 3.43 8.24 3.53 38.65
1911 8.53 3.34 0.63 2.11 3.95 0.87 0.01 0.28 5.19 0.99 2.64 4.74 33.28
1912 8.01 4.85 1.41 2.04 1.89 3.03 0.48 3.39 1.18 3.36 5.80 8.03 43.47
1913 6.25 1.13 4.04 2.94 1.63 4.42 0.24 0.76 2.58 3.62 5.39 3.48 36.30
1914 11.53 4.19 2.28 3.08 1.22 1.52 0.01 0.01 3.10 3.47 3.70 2.56 36.67
1915 5.90 3.07 2.15 2.03 2.59 1.47 1.52 0.01 0.53 1.98 11.32 8.73 41.30
1916 5.69 7.87 10.57 2.85 2.05 1.83 2.55 0.27 0.71 1.26 6.31 3.81 45.77
Year JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC Annual

MONTHLY AND ANNUAL PRECIPITATION (cont.)

Year JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC Annual
1917 2.54 3.32 5.33 5.36 2.31 1.17 0.01 trace 1.96 0.03 4.24 14.23 40.50
1918 4.68 6.77 3.47 1.13 1.38 0.12 1.08 0.31 0.66 4.47 4.30 3.13 31.50
1919 9.08 8.36 4.64 3.60 1.95 0.91 0.23 0.10 3.18 1.43 7.44 4.78 45.70
1920 4.84 0.16 3.94 4.75 0.91 2.11 1.18 1.25 4.16 3.71 5.84 8.32 41.17
1921 7.82 7.21 4.28 2.26 0.99 1.36 trace 0.30 3.08 2.78 10.04 3.09 43.21
1922 3.08 3.29 6.57 3.05 1.60 0.14 trace 2.06 1.90 4.70 2.94 9.43 38.76
1923 9.57 1.81 1.83 1.90 1.48 1.19 2.17 0.26 0.59 1.61 4.15 6.25 32.81
1924 3.94 5.21 1.40 0.91 0.45 0.68 0.03 0.62 1.93 5.50 6.11 4.44 31.22
1925 6.94 6.46 1.76 1.92 0.74 0.73 trace 0.71 1.50 0.02 5.44 5.14 31.36
1926 3.64 7.71 0.80 0.80 2.83 0.35 0 1.95 2.14 5.26 9.78 5.91 41.17
1927 9.18 6.95 2.11 1.69 2.24 2.68 0.95 0.35 5.52 2.65 7.99 3.47 45.78
1928 5.11 1.19 7.21 4.47 0.74 0.44 0.42 trace 0.65 1.65 5.30 7.51 34.69
1929 3.50 0.97 2.90 4.06 1.14 2.19 0.02 0.23 0.31 1.33 0.67 8.79 26.11
1930 3.43 5.03 2.21 2.72 3.08 0.69 trace 0.06 1.79 2.15 2.84 3.16 27.16
1931 4.30 2.40 8.12 2.40 1.09 3.13 trace 0.04 2.10 4.32 6.38 8.40 42.68
1932 5.63 2.58 6.08 3.57 1.50 0.07 0.48 0.45 0.11 3.76 7.88 7.87 39.98
1933 7.94 4.26 5.10 0.95 3.59 2.60 trace 0.86 2.97 4.59 2.54 17.45 52.85
1934 6.02 1.40 5.18 2.46 1.60 0.96 0.11 0.33 1.32 5.30 10.47 10.83 45.98
1935 3.45 3.17 5.28 2.48 0.61 0.50 0.28 0.20 0.86 3.20 3.27 5.89 29.19
1936 8.55 4.73 3.10 0.80 3.72 2.43 0.40 0.07 1.41 0.44 0.36 8.28 34.29
1937 6.02 6.34 2.81 6.22 1.06 3.88 0.20 1.41 2.06 2.91 10.08 13.86 56.85
1938 5.06 7.83 6.42 2.02 0.65 0.45 0.25 0.35 1.38 2.87 4.83 4.16 36.27
1939 4.69 5.26 2.29 0.55 1.08 1.73 0.79 1.52 0.60 2.14 1.73 8.37 30.75
1940 2.36 10.82 5.12 2.76 1.57 0.06 0.39 0.07 3.56 4.26 4.82 5.03 40.82
1941 5.27 1.59 1.75 1.66 4.27 0.81 0.03 1.45 3.58 2.18 5.04 9.11 36.73
1942 3.63 3.64 1.63 2.38 2.84 1.94 1.40 0.17 0.06 3.49 11.57 9.37 42.12
1943 5.50 3.27 5.54 2.21 1.42 2.80 0.32 1.39 0.06 5.59 2.20 2.70 33.00
1944 2.81 3.11 1.93 2.28 1.07 0.81 0.06 0.03 2.73 1.64 5.00 1.90 23.37
1945 4.10 4.36 5.30 2.42 4.57 0.07 0.51 0.37 3.96 2.11 8.58 5.61 41.96
1946 5.12 4.99 4.23 0.78 1.24 1.91 1.08 0.18 1.15 4.81 7.57 5.47 38.53
1947 3.72 2.77 4.11 1.81 0.66 2.93 0.94 0.29 1.06 8.04 4.08 4.64 35.05
1948 5.87 5.02 4.24 3.41 3.76 1.42 0.32 1.55 3.28 2.39 6.89 8.06 46.21
1949 1.02 9.46 2.78 0.72 2.12 0.68 0.91 0.24 1.66 2.35 5.56 4.86 32.36
1950 10.10 5.77 4.76 2.74 0.57 2.50 0.50 0.72 1.45 7.00 8.67 6.31 51.09
1951 7.71 5.02 3.86 1.14 1.75 0.03 0.28 0.02 2.55 6.81 5.31 5.06 39.54
1952 4.40 3.59 3.82 1.45 0.78 2.23 trace 0.18 0.33 0.72 1.44 6.76 25.70
1953 12.83 3.71 3.82 1.89 3.45 2.04 0.03 1.79 1.16 3.56 6.46 7.85 48.59
1954 8.95 4.57 2.55 2.54 1.83 3.58 1.24 1.92 0.85 3.40 5.09 5.01 41.53
1955 2.30 3.37 3.06 4.72 1.24 1.83 0.89 trace 2.86 6.69 7.34 10.14 44.44
1956 11.66 3.03 4.30 0.53 2.50 2.03 0.01 2.56 1.12 5.10 1.47 3.64 37.95
1957 2.23 4.14 7.52 1.84 1.97 0.73 0.19 0.69 0.49 3.53 3.07 6.15 32.55
1958 6.56 5.13 2.20 3.33 1.35 3.04 trace 0.02 1.05 1.49 6.39 5.06 35.62
1959 7.57 4.18 3.22 0.92 2.89 2.38 0.56 0.09 2.81 3.51 3.30 3.08 34.51
1960 3.93 4.00 4.77 3.33 3.37 0.52 trace 1.00 1.37 2.39 8.63 2.61 35.92
1961 4.50 8.92 6.04 3.59 2.80 0.47 0.42 1.07 0.64 2.89 4.67 5.94 41.95
1962 1.58 3.43 4.25 3.15 2.56 0.78 0.06 1.49 1.66 3.31 9.32 2.59 34.18
1963 2.27 3.48 4.69 3.78 2.74 1.71 1.17 0.87 0.75 3.04 5.64 3.60 33.74
Year JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC Annual


MONTHLY AND ANNUAL PRECIPITATION (cont.)

Year JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC Annual
1964 9.51 0.78 2.30 1.56 1.04 1.96 0.68 0.90 1.61 0.84 6.78 9.92 37.88
1965 7.44 2.22 1.10 2.20 1.31 0.83 0.44 0.73 0.01 2.03 5.64 7.34 31.29
1966 5.74 1.70 4.71 0.85 0.91 1.02 1.19 0.59 1.70 3.06 5.50 6.89 33.86
1967 6.21 2.02 4.31 2.17 1.02 1.01 0 trace 0.76 4.72 2.27 4.75 29.24
1968 4.58 6.64 2.68 1.91 3.63 2.20 0.14 4.53 2.20 5.03 6.23 11.12 50.89
1969 7.60 3.14 1.13 2.28 1.61 2.99 0.14 0.04 3.86 3.02 3.18 8.12 37.11
1970 11.81 4.77 2.58 2.94 1.55 0.49 0.05 trace 1.10 2.85 5.72 7.49 41.35
1971 7.09 3.36 4.87 2.72 1.00 1.76 0.26 0.95 3.53 2.37 5.76 8.05 41.72
1972 5.71 4.08 5.41 2.98 2.23 0.68 0.56 0.67 3.06 0.87 3.78 8.79 38.82
1973 3.69 1.94 2.45 1.33 1.43 1.45 0.06 1.41 3.29 3.14 11.55 9.93 41.67
1974 8.51 4.61 5.65 1.76 1.74 0.80 2.01 0.07 0.21 2.14 6.73 6.05 40.28
1975 8.43 4.75 3.45 1.88 1.35 1.13 0.43 2.10 trace 4.76 4.10 6.68 39.06
1976 5.14 4.92 2.93 2.34 2.29 0.78 0.66 3.29 0.73 1.48 0.77 1.38 26.71
1977 1.07 2.49 3.50 1.04 4.30 0.83 0.39 3.26 3.33 2.28 5.56 8.98 37.03
1978 4.85 3.28 1.49 3.96 3.17 1.69 1.36 2.05 2.07 0.36 3.83 2.51 30.62
1979 2.55 6.53 2.51 2.47 2.41 0.64 0.25 1.18 1.75 4.85 3.38 7.23 35.75
1980 8.51 4.01 3.11 2.58 2.19 2.50 0.19 0.39 1.56 1.18 6.47 9.72 42.41
1981 1.47 3.86 2.33 1.79 2.25 3.23 0.24 0.15 1.86 4.12 4.62 8.37 34.29
1982 6.31 5.98 2.38 3.56 0.46 1.66 0.94 1.66 3.98 4.44 3.51 8.16 43.04
1983 6.23 7.78 6.80 1.87 1.30 1.95 2.68 2.29 0.39 1.95 8.65 5.30 47.19
1984 2.01 3.93 3.19 3.20 3.41 4.06 trace 0.09 1.46 3.85 9.74 2.56 37.50
1985 0.06 1.79 3.08 1.07 1.52 2.34 0.55 0.48 2.76 2.75 3.89 2.19 22.48
1986 4.65 5.31 2.60 1.91 2.19 0.23 1.20 0.10 4.30 1.99 6.26 4.30 35.04
1987 6.93 2.45 4.91 1.94 1.63 0.14 1.03 0.35 0.30 0.27 1.96 8.00 29.91
1988 4.95 1.17 3.13 4.57 2.53 2.34 0.69 0.10 1.76 0.19 7.92 2.37 31.72
1989 3.30 2.84 6.73 2.08 2.87 0.78 0.91 1.07 1.48 1.73 3.18 3.08 30.05
1990 7.95 3.43 2.52 2.31 2.37 1.94 0.32 0.95 0.34 4.65 3.68 2.40 32.86
1991 2.56 3.65 4.64 4.05 3.34 2.31 0.07 0.70 0.02 1.51 6.36 4.34 33.55
1992 4.31 4.12 1.87 3.82 0.10 0.60 0.67 0.49 1.12 2.87 4.55 4.98 29.50
1993 3.06 0.72 4.39 5.26 4.36 1.69 2.41 0.37 trace 1.59 1.50 5.01 30.36
1994 3.56 4.92 1.84 1.91 0.56 1.67 0.07 0.13 1.13 8.41 5.91 4.85 34.96
1995 5.56 3.19 3.82 3.49 1.65 2.62 1.23 0.81 1.31 3.15 11.15 5.35 43.33
1996 7.15 10.03 3.24 5.12 4.88 0.44 0.73 0.25 3.05 5.39 9.58 13.35 63.21
1997 7.32 1.63 7.14 3.73 3.63 2.83 0.52 1.58 1.98 6.40 4.02 3.03 43.81
1998 6.77 5.27 4.06 1.04 5.55 1.73 0.59 trace 1.09 2.16 11.02 6.74 46.02
1999 6.62 8.73 4.03 1.55 1.97 1.73
2000
2001
2002
2003
Year JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC Annual
Average Monthly Precipitation (inches) (1961-90 Climatic Normals)
JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC Annual
5.35 3.85 3.56 2.39 2.06 1.48 0.63 1.09 1.75 2.67 5.34 6.13 36.30