RESTON, OREGON

Monthly Precipitation - Daily Extreme (inches)

(357112)

File last updated on Apr 4, 2013
*** Note *** Provisional Data *** After Year/Month 200408
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
1909 9999.00 z 9999.00 z 9999.00 z 9999.00 z 0.42 0.51 0.13 0.00 0.47 1.47 6.43 1.10 6.43
1910 1.22 0.94 0.49 b 0.68 0.60 0.18 b 0.00 0.00 0.24 1.45 3.00 1.34 3.00
1911 1.55 b 0.65 0.68 1.22 1.38 b 0.45 0.00 0.00 1.32 0.67 0.92 2.20 2.20
1912 1.50 b 1.70 2.30 0.60 c 1.25 0.65 0.02 0.40 0.80 1.21 1.50 1.66 2.30
1913 1.80 0.27 0.80 1.53 0.22 0.61 0.96 0.08 0.37 1.90 1.80 1.22 1.90
1914 1.55 1.06 1.08 0.82 0.19 0.99 0.03 0.00 1.10 1.83 1.53 1.38 a 1.83
1915 1.50 2.07 a 0.50 0.20 0.75 0.20 0.25 0.00 0.44 0.50 2.50 1.25 2.50
1916 1.48 2.72 2.10 0.74 0.98 0.35 1.00 0.17 0.45 0.36 2.05 1.13 2.72
1917 2.00 1.22 1.65 0.67 0.80 0.18 0.00 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 2.00
1918 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00
1919 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00
1920 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00
1921 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00
1922 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00
1923 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00
1924 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00
1925 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00
1926 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00
1927 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00
1928 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00
1929 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00
1930 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00
1931 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00
1932 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00
1933 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00
1934 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00
1935 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00
1936 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00
1937 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00
1938 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00
1939 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00
1940 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00
1941 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00
1942 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00
1943 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00
1944 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00
1945 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00
1946 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00
1947 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00
1948 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00
1949 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00
1950 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00
1951 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00
1952 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00
1953 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00
1954 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00 z 9999.00
1955 9999.00 z 9999.00 z 1.71 b 0.98 0.17 0.13 0.11 0.00 0.55 1.71 1.94 5.75 5.75
1956 2.60 3.39 1.70 0.22 0.60 0.36 0.02 0.00 0.25 1.80 1.28 2.72 3.39
1957 0.65 1.83 0.92 0.71 1.40 0.23 0.10 0.09 1.43 1.31 2.46 2.42 2.46
1958 1.80 2.86 1.18 0.32 0.34 0.87 0.23 a 0.00 0.71 1.11 1.27 1.48 2.86
1959 2.91 2.35 0.64 0.11 0.58 0.31 0.00 0.00 0.74 0.88 1.11 1.24 2.91
1960 1.20 a 3.14 1.90 0.90 1.89 9999.00 z 0.00 0.26 0.23 0.65 2.90 1.41 3.14
1961 1.20 3.20 1.80 A 0.45 0.50 9999.00 z 9999.00 z 0.16 l 0.31 1.61 5.25 1.66 5.25
1962 0.92 1.02 1.57 1.43 0.19 0.20 9999.00 z 0.21 0.53 1.32 2.05 1.87 2.05
1963 0.48 2.14 1.23 1.12 1.59 0.80 0.00 0.00 1.17 0.80 2.68 1.34 2.68
1964 2.74 2.10 A 1.40 A 0.61 0.87 A 0.72 A 0.09 0.14 0.22 0.32 1.68 4.15 4.15
1965 1.70 1.26 1.29 0.83 0.40 0.15 0.11 0.42 0.00 0.72 1.22 3.48 3.48
1966 2.94 1.02 1.59 0.42 0.12 0.30 0.60 0.01 0.98 1.32 2.01 1.70 2.94
1967 2.15 0.72 0.77 0.79 0.34 0.07 0.00 0.00 0.41 1.57 1.21 1.90 2.15
1968 1.62 1.14 0.95 0.28 0.63 0.11 0.02 0.49 0.75 1.06 1.63 2.27 2.27
1969 2.18 1.50 1.05 0.53 0.24 0.28 0.00 0.00 0.74 0.76 1.68 3.80 3.80
1970 2.21 1.16 0.70 1.10 0.43 0.15 0.00 0.17 0.09 1.15 2.10 1.56 2.21
1971 2.65 2.10 1.26 1.58 1.01 0.67 0.00 0.40 1.35 0.76 2.44 1.72 2.65
1972 2.50 1.26 A 3.26 1.60 0.84 0.72 0.00 0.47 0.46 0.78 1.10 1.50 3.26
1973 1.11 0.57 0.62 0.62 0.25 0.44 0.00 0.25 0.59 1.00 2.88 2.20 2.88
1974 2.26 0.96 1.48 0.92 0.48 0.64 0.17 0.00 0.00 0.67 1.46 1.79 2.26
1975 1.77 1.57 1.54 1.29 0.48 0.29 0.10 0.38 0.12 1.38 1.55 2.00 2.00
1976 2.54 1.05 0.98 0.43 0.33 0.09 0.11 0.74 0.72 1.18 0.48 0.82 2.54
1977 0.62 1.25 1.29 0.25 0.64 0.11 0.00 1.18 1.71 0.94 2.35 1.82 2.35
1978 1.14 2.19 0.81 0.72 0.49 0.13 0.08 0.81 1.22 0.35 1.19 1.15 2.19
1979 3.09 1.36 0.74 1.14 1.23 0.56 0.00 0.42 0.84 1.60 1.66 1.33 3.09
1980 1.92 0.81 1.82 0.92 0.23 0.40 0.04 0.00 0.24 0.62 1.49 2.55 2.55
1981 0.62 0.89 0.64 0.66 0.41 0.60 0.05 0.05 2.00 1.79 1.81 4.72 4.72
1982 1.70 2.22 1.12 1.72 0.06 0.54 0.03 0.13 0.60 2.08 1.34 2.01 2.22
1983 1.17 3.43 2.41 0.72 0.65 0.95 0.36 1.19 0.13 0.48 1.96 1.53 3.43
1984 0.42 3.16 1.08 1.56 0.50 0.56 0.02 0.01 0.06 0.87 2.35 0.85 3.16
1985 0.31 0.96 1.56 0.50 0.40 0.85 0.24 0.01 0.45 1.37 0.91 1.16 1.56
1986 1.50 2.51 1.41 0.58 1.25 0.51 0.31 0.00 1.50 0.87 2.23 1.04 2.51
1987 1.08 0.75 0.70 0.37 0.28 0.02 0.41 0.19 0.05 0.14 0.83 2.66 2.66
1988 1.98 0.61 0.74 0.60 0.92 0.36 0.00 0.04 0.44 0.05 2.65 1.22 2.65
1989 2.29 0.92 0.95 0.50 1.04 0.26 0.12 0.33 0.45 1.16 1.04 0.54 2.29
1990 2.42 1.29 0.75 0.63 0.52 0.30 0.31 1.24 0.17 1.69 1.09 0.87 2.42
1991 1.06 1.22 1.77 0.74 0.66 0.53 0.21 0.08 0.00 1.36 1.13 1.71 1.77
1992 0.78 0.57 0.69 1.26 0.01 9999.00 z 0.52 0.01 0.23 1.26 1.56 1.71 1.71
1993 1.74 1.11 0.90 1.31 1.19 0.40 0.53 0.26 0.00 0.39 0.80 2.12 2.12
1994 1.20 0.79 0.90 0.58 0.69 0.31 0.00 0.00 0.69 1.13 1.63 0.94 1.63
1995 2.29 1.07 a 1.05 1.08 0.47 0.78 0.77 0.05 0.30 0.50 1.20 2.10 2.29
1996 2.06 1.22 0.65 1.59 0.86 0.09 a 0.20 0.00 0.83 0.90 4.91 2.97 4.91
1997 1.32 0.64 z 2.45 b 0.69 1.10 0.26 0.06 0.41 1.09 2.08 0.74 0.85 a 2.45
1998 1.58 2.12 1.21 0.42 1.21 0.06 0.00 0.00 0.21 0.38 4.42 1.98 a 4.42
1999 2.06 1.27 0.66 0.70 1.07 0.00 0.00 0.34 0.00 1.67 0.90 1.12 2.06
2000 2.56 1.03 0.45 0.92 0.51 0.64 0.06 0.00 0.17 0.89 0.69 1.34 b 2.56
2001 0.60 0.58 0.70 0.27 1.03 0.45 0.12 0.10 0.22 0.78 1.17 2.10 2.10
2002 1.31 1.30 0.83 0.12 t 0.20 0.06 0.06 0.00 0.48 0.03 1.52 2.51 2.51
2003 1.41 0.82 0.56 0.95 0.33 0.00 0.00 0.00 0.82 0.31 0.97 9999.00 z 1.41
2004 1.69 A 1.31 a 0.59 c 0.72 0.10 d 9999.00 z 0.00 0.05 9999.00 z 9999.00 z 9999.00 z 9999.00 z 1.31
Period of Record Statistics
MEAN 1.66 1.50 1.18 0.80 0.65 0.38 0.15 0.20 0.57 1.03 1.87 1.87 2.66
S.D. 0.69 0.81 0.58 0.41 0.42 0.26 0.23 0.31 0.47 0.53 1.14 0.98 0.73
SKEW 0.05 0.94 1.20 0.56 0.75 0.50 2.17 2.03 0.99 0.08 2.06 1.84 1.33
MAX 3.09 3.43 3.26 1.72 1.89 0.99 1.00 1.24 2.00 2.08 6.43 5.75 4.91
MIN 0.31 0.27 0.45 0.11 0.01 0.00 0.00 0.00 0.00 0.03 0.48 0.54 1.56
NO YRS 57 56 58 57 59 54 57 57 57 57 57 56 47