ARIEL DAM, WASHINGTON

Monthly Total Precipitation (inches)

(450242)

File last updated on Apr 4, 2013
*** Note *** Provisional Data *** After Year/Month 197110
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
1930 0.00 z 10.40 i 4.77 s 4.05 m 3.56 n 1.56 t 0.00 z 0.00 z 1.76 y 5.14 w 0.00 z 0.00 z 0.00
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 11.39 7.50 14.63 7.26 1.68 0.33 2.37 1.24 0.71 8.15 15.44 0.00 z 70.70
1933 0.00 z 0.00 z 10.21 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 5.21 25.19 40.61
1934 14.34 2.01 6.85 2.92 0.00 z 0.00 z 0.00 z 0.00 z 3.93 10.09 15.67 15.56 71.37
1935 7.79 4.03 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 4.38 7.05 23.25
1936 14.45 7.94 7.75 0.86 6.04 5.76 2.06 0.39 1.18 x 1.90 1.05 16.15 h 48.20
1937 7.15 9.40 h 4.89 9.87 1.92 6.83 0.00 2.99 2.23 5.52 16.36 14.93 72.69
1938 6.56 7.40 h 9.69 3.94 t 1.61 0.46 z 0.00 z 1.48 1.99 4.12 u 8.58 m 7.85 n 21.33
1939 8.96 10.42 4.85 0.48 1.61 3.93 1.64 1.65 1.30 x 6.01 3.35 10.87 53.77
1940 2.77 r 15.07 6.10 3.58 3.09 x 0.25 1.79 0.38 z 3.42 6.86 8.64 7.68 53.39
1941 7.97 2.66 2.53 2.81 6.56 2.28 0.00 4.06 7.65 5.27 8.12 12.95 62.86
1942 3.18 13.03 k 3.00 3.02 5.34 4.71 2.62 0.85 y 0.33 4.27 15.73 12.88 55.08
1943 5.04 7.38 8.28 3.98 2.18 v 2.12 0.58 1.95 z 0.50 8.63 3.65 7.03 47.19
1944 4.40 6.02 4.62 6.28 2.03 2.14 0.07 0.28 4.95 2.26 8.64 4.03 45.72
1945 10.14 7.37 11.54 6.37 4.72 0.26 0.35 0.72 4.51 3.79 14.23 7.92 71.92
1946 10.00 10.44 7.35 2.97 1.60 5.45 2.02 0.45 3.50 11.13 10.82 14.32 80.05
1947 8.74 4.94 4.98 5.22 0.22 6.55 1.54 0.41 2.24 13.35 12.41 8.36 68.96
1948 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 1.99 1.82 2.15 5.00 4.13 14.25 15.54 44.88
1949 2.04 16.06 4.15 1.33 2.97 2.04 0.64 0.64 2.03 6.45 8.23 11.75 58.33
1950 13.26 10.05 9.22 5.55 1.57 1.70 2.08 1.89 2.31 10.28 12.91 12.30 83.12
1951 12.55 7.45 8.44 0.99 2.66 0.40 0.61 0.57 a 4.96 11.42 8.34 11.16 69.55
1952 6.93 5.73 7.52 2.59 1.24 2.70 0.04 1.08 0.84 1.12 2.49 12.14 44.42
1953 19.62 6.25 6.67 3.19 4.61 a 2.80 0.36 2.50 0.89 5.50 10.09 15.32 77.80
1954 14.11 7.39 3.58 4.14 3.01 5.42 1.71 0.86 2.04 5.15 10.33 11.19 68.93
1955 4.73 7.90 10.98 8.19 2.39 2.40 2.14 0.00 4.00 14.36 15.72 14.83 87.64
1956 16.11 9.05 12.71 1.52 1.80 3.37 0.21 5.31 3.08 a 11.05 4.85 11.95 81.01
1957 6.85 8.50 10.86 3.92 3.75 2.42 0.82 1.29 0.77 5.55 8.87 15.98 69.58
1958 11.63 9.03 5.13 7.67 1.58 4.07 0.05 0.41 3.93 4.07 16.87 11.51 75.95
1959 16.51 8.47 7.69 4.52 5.41 5.48 1.16 0.53 7.24 9.27 10.78 7.83 84.89
1960 6.23 9.13 9.17 9.03 8.06 1.51 0.00 4.62 2.66 7.45 16.94 5.15 79.95
1961 9.91 20.85 11.40 7.40 4.73 1.26 0.55 0.98 1.48 8.10 10.43 13.10 90.19
1962 5.94 6.90 8.12 7.15 3.84 1.55 0.52 3.14 3.99 5.93 19.16 7.05 73.29
1963 3.92 8.94 8.88 7.57 3.63 3.40 2.34 1.65 2.46 6.46 11.07 9.08 69.40
1964 20.29 4.46 10.07 4.83 2.54 3.27 0.00 z 2.11 2.81 4.09 11.08 17.08 82.63
1965 17.48 6.92 1.53 3.40 2.90 0.59 0.15 2.06 0.34 4.27 8.44 12.90 60.98
1966 14.00 5.60 10.81 2.10 1.90 3.22 2.29 0.84 2.54 7.31 10.31 16.57 77.49
1967 18.48 5.87 10.52 5.98 1.50 2.47 0.00 0.00 1.13 12.05 5.98 9.95 73.93
1968 9.63 10.27 7.33 4.02 4.00 5.60 0.39 7.50 3.15 10.42 10.81 15.57 88.69
1969 13.64 7.75 2.56 4.60 4.10 5.64 0.42 0.16 5.42 8.92 5.03 11.00 69.24
1970 19.26 7.41 5.58 7.66 3.88 1.18 0.73 0.02 5.17 7.13 10.12 16.48 84.62
1971 19.18 9.58 11.54 4.85 2.72 5.07 0.78 1.06 6.95 6.80 0.00 z 0.00 z 68.53
Period of Record Statistics
MEAN 10.88 8.15 7.68 4.66 3.18 3.06 1.00 1.62 3.09 7.15 10.18 12.06 73.02
S.D. 5.18 3.58 3.16 2.45 1.75 1.91 0.87 1.68 1.96 3.20 4.53 4.13 11.76
SKEW 0.24 1.49 -0.04 0.22 0.81 0.33 0.43 1.77 0.57 0.31 -0.04 0.53 -0.81
MAX 20.29 20.85 14.63 9.87 8.06 6.83 2.62 7.50 7.65 14.36 19.16 25.19 90.19
MIN 2.04 2.01 1.53 0.48 0.22 0.25 0.00 0.00 0.33 1.12 1.05 4.03 44.42
NO YRS 37 35 38 36 34 36 35 34 36 37 38 36 26