SEATTLE TCOMA WSCMO AP, WASHINGTON

Monthly Total Precipitation (inches)

(457473)

File last updated on Jul 25, 2006
*** Note *** Provisional Data *** After Year/Month 200603
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
1931 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
1932 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
1933 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
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 2.08 f 1.53 1.87 3.85 2.33 6.06 6.13 21.77
1949 0.77 5.89 3.54 1.18 1.30 0.93 1.04 0.45 1.43 3.85 6.78 5.30 32.46
1950 8.91 5.74 8.40 2.92 0.78 0.59 1.00 2.17 2.30 7.21 7.98 7.14 55.14
1951 6.80 8.76 3.76 0.65 1.61 0.13 0.31 1.02 2.03 5.87 5.44 3.92 40.30
1952 4.89 2.46 3.52 2.03 0.99 1.04 0.41 0.70 0.32 1.29 1.11 5.02 23.78
1953 12.92 3.70 3.72 2.10 2.51 1.85 0.66 1.11 3.28 4.43 7.22 5.92 49.42
1954 8.36 4.38 2.07 2.64 1.89 2.44 1.46 1.57 1.68 1.91 7.67 5.20 41.27
1955 3.35 4.30 3.25 3.64 1.95 1.27 2.10 0.17 1.52 6.60 8.96 9.50 46.61
1956 8.67 2.17 4.95 0.33 0.83 2.47 0.33 0.76 2.42 6.71 1.59 5.62 36.85
1957 2.41 5.57 6.26 2.23 1.17 1.18 1.10 1.64 0.76 3.79 3.00 5.52 34.63
1958 8.72 5.36 2.26 3.51 0.94 0.90 0.00 0.31 1.42 3.99 8.07 7.15 42.63
1959 7.98 3.64 4.12 3.59 1.60 1.82 0.93 0.60 4.60 2.67 8.14 6.83 46.52
1960 5.48 4.01 4.08 2.88 3.04 0.70 0.00 1.92 1.17 4.22 8.03 3.75 39.28
1961 7.71 9.11 4.46 2.35 3.07 0.54 0.75 0.82 0.46 3.27 4.67 5.32 42.53
1962 2.43 2.29 2.86 2.03 1.82 0.68 0.69 1.96 2.31 4.16 9.34 5.22 35.79
1963 2.25 4.36 3.43 3.06 0.90 1.68 1.18 0.73 0.59 5.06 9.69 5.79 38.72
1964 9.76 1.66 2.96 1.56 0.91 3.82 0.99 1.23 2.27 1.00 9.65 5.53 41.34
1965 5.27 3.88 0.57 3.73 1.63 0.59 0.38 2.18 0.49 2.76 4.98 7.10 33.56
1966 5.43 2.31 4.38 1.99 1.35 1.15 1.35 0.42 1.77 2.92 6.85 8.31 38.23
1967 9.32 2.72 3.71 2.50 0.38 2.04 0.01 0.02 0.94 6.66 2.56 4.72 35.58
1968 6.90 6.08 5.08 1.33 1.67 3.02 0.83 4.58 1.93 4.32 5.86 8.55 50.15
1969 5.71 3.16 2.20 3.45 2.93 0.91 0.27 0.45 5.57 1.19 2.21 5.68 33.73
1970 8.22 2.26 3.16 3.31 1.17 0.43 0.48 0.32 2.23 2.52 5.03 8.28 37.41
1971 5.32 4.36 7.12 2.39 1.43 2.28 0.68 0.57 3.51 3.57 5.31 6.67 43.21
1972 7.24 8.11 6.74 4.12 0.69 1.81 1.34 1.13 4.10 0.72 3.38 8.98 48.36
1973 4.29 1.89 1.62 1.35 1.60 2.50 0.08 0.27 1.81 3.31 7.99 8.33 35.04
1974 7.78 4.01 5.84 2.39 1.37 1.25 1.51 0.01 0.21 1.99 5.06 6.45 37.87
1975 6.01 5.80 2.87 2.49 1.13 0.84 0.27 4.59 0.00 7.75 5.07 7.66 44.48
1976 5.55 4.74 2.71 1.67 1.61 0.63 1.17 2.71 1.25 2.06 0.74 1.86 26.70
1977 1.77 1.58 3.80 0.55 3.70 0.54 0.42 3.59 2.55 2.60 5.27 6.47 32.84
1978 4.30 3.59 2.43 4.19 1.79 0.75 1.40 1.19 5.95 0.98 6.05 1.37 33.99
1979 2.25 5.32 1.55 0.81 0.88 0.46 0.73 1.02 2.07 3.38 1.94 11.85 32.26
1980 4.09 5.04 2.10 3.23 0.97 1.77 0.46 0.64 1.43 1.32 7.16 7.39 35.60
1981 2.42 4.45 2.23 1.58 1.33 2.31 1.38 0.25 3.42 6.40 4.07 5.56 35.40
1982 5.35 7.57 3.73 2.07 0.63 1.03 0.59 0.62 1.49 4.07 5.31 6.86 39.32
1983 7.07 4.57 3.81 1.06 2.10 1.85 2.39 1.90 1.85 1.34 7.97 5.02 40.93
1984 3.62 3.91 3.91 2.87 3.38 2.81 0.17 0.13 1.01 2.14 8.09 4.95 36.99
1985 0.58 2.63 2.56 1.30 0.85 2.80 0.10 0.55 1.98 5.74 4.26 1.78 25.13
1986 8.54 4.41 2.67 1.38 1.71 0.68 1.10 0.10 1.89 4.21 7.98 3.67 38.34
1987 5.98 2.05 5.53 2.61 2.38 0.16 0.39 0.29 0.91 0.31 3.21 6.11 29.93
1988 4.07 0.71 3.75 3.20 3.01 1.56 0.50 0.28 1.75 2.24 8.43 3.48 32.98
1989 2.78 3.43 5.79 2.80 2.78 1.14 0.64 0.89 0.54 2.98 6.13 4.79 34.69
1990 9.41 3.72 2.58 2.54 1.98 3.05 0.58 0.71 0.05 5.79 10.71 3.63 44.75
1991 4.46 4.69 4.66 6.53 1.39 1.29 0.28 2.17 0.00 1.31 5.33 3.31 35.42
1992 7.82 3.09 1.68 4.12 0.12 1.14 0.89 0.66 1.15 2.45 5.57 4.09 32.78
1993 4.09 0.35 4.80 4.54 2.86 2.48 1.27 0.16 0.03 1.54 2.20 4.48 28.80
1994 2.51 4.47 3.17 2.27 1.43 1.25 0.28 0.30 1.69 3.51 5.79 8.15 34.82
1995 4.48 4.97 4.07 2.05 0.81 1.46 1.34 1.81 0.91 3.93 10.40 6.37 42.60
1996 7.34 8.35 2.06 5.37 2.07 0.59 0.77 1.32 1.85 5.54 5.23 10.18 50.67
1997 7.02 1.99 8.15 4.32 1.87 1.64 1.20 1.27 3.41 5.83 3.93 2.63 43.26
1998 7.15 3.31 3.96 0.99 1.98 1.11 0.41 0.35 0.72 3.48 11.62 8.98 44.06
1999 6.84 6.95 3.66 1.49 2.12 1.86 1.18 0.92 0.17 2.26 9.60 5.06 42.11
2000 3.77 5.25 2.82 1.48 3.27 1.61 0.23 0.33 1.12 3.00 3.27 2.51 28.66
2001 2.70 2.07 2.73 3.16 1.39 3.05 1.03 2.32 0.83 3.13 9.26 5.89 37.56
2002 5.98 4.17 2.82 4.29 1.11 1.73 0.64 0.04 0.42 0.67 3.51 5.98 31.36
2003 8.39 1.76 6.34 2.74 1.16 0.51 0.06 0.32 0.89 8.96 6.77 3.88 41.78
2004 6.36 2.44 2.14 0.65 2.51 0.71 0.16 3.00 2.80 2.80 3.16 4.37 31.10
2005 4.44 1.20 3.71 3.68 3.32 1.63 1.03 0.29 0.75 a 3.02 5.52 6.85 35.44
2006 11.65 2.55 2.18 2.73 1.68 2.04 0.06 j 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 22.83
Period of Record Statistics
MEAN 5.79 4.02 3.71 2.55 1.70 1.46 0.77 1.10 1.72 3.50 5.97 5.81 37.99
S.D. 2.66 1.97 1.62 1.25 0.83 0.84 0.53 1.05 1.33 1.95 2.59 2.12 6.55
SKEW 0.22 0.63 0.94 0.58 0.58 0.64 0.67 1.59 1.18 0.66 0.02 0.28 0.26
MAX 12.92 9.11 8.40 6.53 3.70 3.82 2.39 4.59 5.95 8.96 11.62 11.85 55.14
MIN 0.58 0.35 0.57 0.33 0.12 0.13 0.00 0.01 0.00 0.31 0.74 1.37 23.78
NO YRS 58 58 58 58 58 58 58 58 58 58 58 58 57