DOVER, DELAWARE

Monthly Total Precipitation (inches)

(072730)

File last updated on May 16,
*** Note *** Provisional Data *** After Year/Month 201205
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 2.39 5.05 3.39 u 3.59 3.50 1.20 w 5.29 3.03 3.69 4.37 z 2.89 x 2.77 29.31
1894 2.77 4.81 1.27 0.00 z 0.00 z 1.60 v 2.16 4.01 4.61 4.15 2.88 3.39 30.05
1895 5.47 1.55 3.79 5.40 2.75 3.78 u 1.94 1.73 2.23 3.14 z 2.26 1.82 28.94
1896 1.57 6.13 5.50 1.18 2.82 7.63 0.00 z 0.68 3.86 3.84 2.15 1.51 36.87
1897 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
1898 3.83 4.35 t 0.00 z 4.27 5.37 2.07 2.92 s 0.00 z 2.77 z 4.26 w 4.53 2.98 23.05
1899 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
1900 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
1901 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
1902 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
1903 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
1904 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
1905 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
1906 0.00 z 0.00 z 0.00 z 0.00 z 2.81 4.48 8.52 4.12 2.09 4.19 2.28 3.33 31.82
1907 1.87 0.95 5.02 4.69 8.04 5.66 1.59 3.76 7.15 s 2.88 6.60 5.08 46.14
1908 3.10 4.07 1.97 3.38 7.84 r 1.21 7.56 4.38 2.63 2.28 0.93 4.81 36.32
1909 3.58 3.50 3.21 4.16 2.47 5.02 3.85 2.83 3.55 1.37 2.81 4.84 41.19
1910 5.02 1.84 1.44 3.51 1.76 7.04 1.96 2.19 0.78 4.92 2.86 3.45 36.77
1911 5.16 1.95 4.42 3.24 1.24 3.79 1.20 10.32 2.68 2.85 5.20 3.79 x 42.05
1912 4.05 2.28 8.00 3.83 5.45 1.77 2.28 1.32 4.77 1.83 1.98 5.02 42.58
1913 3.13 1.86 3.22 5.60 4.68 3.78 1.70 4.03 3.83 4.75 1.83 1.60 40.01
1914 2.93 2.60 3.06 2.82 u 1.90 2.90 3.86 6.15 0.45 1.05 1.80 6.04 32.74
1915 4.18 4.56 1.34 1.65 4.97 4.40 3.75 9.62 1.72 4.26 0.84 3.31 44.60
1916 1.70 4.26 3.98 2.89 4.74 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 17.57
1917 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
1918 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
1919 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 2.46 z 10.60 1.27 2.98 3.67 3.29 21.81
1920 2.50 4.83 4.36 4.66 2.67 7.14 4.85 7.35 2.85 1.22 6.04 q 3.15 45.58
1921 2.24 3.23 2.39 3.98 o 2.70 2.63 3.95 3.44 2.63 0.85 4.54 1.75 30.35
1922 3.94 3.00 n 4.34 1.98 o 1.74 7.23 6.43 4.73 3.20 0.89 0.62 3.44 36.56
1923 5.13 3.14 a 5.53 r 3.80 0.58 y 2.81 v 3.79 q 2.11 n 4.40 r 3.83 2.35 3.12 21.37
1924 4.07 3.50 q 4.98 4.80 6.09 3.66 a 3.78 4.53 5.24 0.19 1.92 1.71 v 39.26
1925 3.97 k 2.50 1.89 2.65 q 1.32 w 1.10 7.50 0.86 0.35 4.02 2.68 1.83 22.73
1926 2.80 6.26 p 2.47 2.62 2.44 2.22 8.97 5.84 5.17 1.87 4.24 3.42 42.06
1927 1.43 3.50 n 1.02 u 3.18 3.42 p 3.41 4.85 s 3.15 p 2.95 t 4.43 2.37 3.86 18.68
1928 3.15 3.12 3.30 6.52 2.48 4.23 l 4.05 13.62 8.73 0.62 2.53 1.64 v 48.12
1929 3.00 5.22 3.55 6.54 1.90 3.39 0.85 2.16 3.72 4.48 2.27 2.41 39.49
1930 3.81 1.79 1.63 2.32 2.61 1.97 3.75 u 3.06 4.34 1.17 1.44 q 2.11 24.81
1931 1.98 v 1.46 5.74 3.07 4.26 p 3.92 2.73 11.51 1.83 3.40 1.12 a 2.44 37.22
1932 5.33 2.86 7.15 3.17 6.32 2.96 1.70 1.86 1.97 5.90 5.45 4.29 48.96
1933 3.30 3.37 2.64 l 4.30 4.53 4.08 5.96 12.53 2.62 o 0.95 1.94 3.76 44.72
1934 2.38 4.35 5.34 j 2.92 6.62 2.60 10.78 3.14 q 7.84 2.23 u 3.73 2.11 43.33
1935 5.01 3.75 4.00 3.68 3.07 5.43 4.73 5.03 11.37 t 2.17 u 4.81 3.04 k 39.51
1936 7.95 5.02 5.88 3.24 1.45 4.59 5.59 4.76 4.30 2.78 0.79 4.32 50.67
1937 8.09 3.44 3.05 5.05 3.71 5.79 3.99 5.16 1.18 6.07 o 3.80 0.91 44.17
1938 2.78 p 3.03 2.38 1.98 3.91 4.26 13.43 1.36 r 8.02 1.78 3.24 2.77 o 42.03
1939 3.80 6.27 6.46 7.02 0.62 4.22 2.68 16.08 2.90 4.37 1.60 1.88 57.90
1940 2.50 2.88 3.82 6.12 6.05 1.18 1.68 6.55 4.47 1.68 4.76 2.41 44.10
1941 3.54 2.15 2.55 3.30 1.87 5.60 3.48 1.96 0.00 2.22 1.99 3.55 32.21
1942 3.80 2.00 6.37 0.83 1.60 2.17 5.31 10.49 2.19 4.94 3.00 4.21 46.91
1943 3.32 2.13 3.88 3.49 3.45 6.99 0.00 z 0.85 2.42 5.64 2.37 1.93 36.47
1944 4.00 1.84 6.33 6.21 2.61 1.78 2.55 4.93 5.70 3.35 3.82 t 2.70 42.00
1945 3.57 3.07 1.74 4.60 3.16 4.49 11.46 1.43 4.18 2.74 2.88 7.50 50.82
1946 2.28 2.25 3.53 2.33 5.06 2.95 5.17 2.95 2.33 1.83 1.54 1.78 34.00
1947 5.26 1.08 0.00 z 2.85 6.49 3.71 3.15 5.86 2.43 1.33 4.38 1.79 38.33
1948 6.91 3.37 3.18 2.48 12.96 3.94 4.44 5.54 1.03 3.27 6.57 6.36 60.05
1949 5.91 3.27 f 3.50 2.12 4.37 1.41 2.00 3.93 4.52 a 4.46 2.58 1.87 36.67
1950 1.93 c 3.15 4.00 1.65 4.38 3.06 3.46 1.61 7.33 1.92 3.98 1.89 38.36
1951 2.26 3.25 3.13 2.43 4.76 d 3.68 3.81 a 2.98 a 2.89 3.89 7.88 6.21 47.17
1952 5.23 2.03 5.09 6.19 5.27 2.87 4.53 10.93 3.18 e 0.98 5.06 3.46 54.82
1953 3.02 j 3.49 5.28 3.87 7.33 1.64 3.88 4.11 1.36 5.23 2.71 3.16 42.06
1954 3.19 1.49 3.75 d 3.31 3.75 1.11 1.51 5.04 4.01 2.36 4.60 3.30 37.42
1955 0.44 2.49 3.59 2.71 2.17 5.81 1.55 13.23 1.82 3.27 1.78 0.39 39.25
1956 2.18 3.46 3.85 2.58 2.31 3.56 5.05 4.64 4.20 5.90 6.51 3.87 48.11
1957 1.86 2.78 3.02 1.35 f 1.83 2.85 1.30 2.85 4.34 3.20 a 4.85 4.82 33.70
1958 3.61 2.37 0.00 z 4.05 4.51 3.40 5.31 12.11 2.25 3.30 3.49 2.34 46.74
1959 1.95 1.85 3.27 3.39 1.16 1.42 9.73 5.20 0.97 3.81 5.65 2.22 40.62
1960 2.24 3.41 2.00 2.13 4.79 2.20 a 6.25 3.35 10.19 2.98 1.92 2.02 43.48
1961 3.55 4.55 4.57 4.68 a 3.80 6.80 3.51 3.19 2.00 4.17 2.30 3.58 46.70
1962 2.56 3.35 3.40 5.02 1.49 3.20 2.48 1.41 3.44 1.40 5.01 3.10 a 35.86
1963 2.24 1.66 5.23 0.48 2.46 3.61 1.98 4.85 3.30 0.00 6.29 1.86 33.96
1964 3.95 5.35 2.86 5.61 0.58 0.68 3.28 1.33 4.63 3.26 1.58 2.93 36.04
1965 3.03 1.13 3.61 1.72 1.10 1.51 1.38 3.32 2.18 0.92 0.64 0.83 21.37
1966 2.88 3.34 1.59 3.26 3.04 2.69 1.61 1.26 6.18 5.87 1.55 4.00 37.27
1967 1.91 2.98 3.58 2.10 4.06 3.81 3.74 15.46 4.11 1.90 2.39 6.85 52.89
1968 1.48 0.81 5.10 1.98 4.90 3.99 1.18 2.42 1.65 3.08 4.62 2.31 33.52
1969 1.93 2.47 3.56 3.20 3.70 4.18 9.06 5.31 11.85 1.54 2.16 8.34 57.30
1970 1.02 1.81 3.60 5.48 2.42 5.04 4.56 1.27 0.91 3.05 3.36 3.35 35.87
1971 2.59 6.27 1.82 2.31 5.01 1.88 2.59 10.93 10.52 5.35 4.42 3.56 57.25
1972 3.21 4.88 1.89 4.61 4.18 8.19 3.44 1.17 5.18 6.14 6.42 5.91 55.22
1973 3.53 2.49 4.12 4.65 4.82 4.17 5.25 3.86 3.12 0.00 z 1.34 5.51 42.86
1974 3.53 1.65 4.60 1.94 4.84 a 6.53 1.07 5.16 3.87 1.84 0.96 4.11 40.10
1975 5.41 3.69 6.38 3.97 5.35 3.80 14.24 3.47 6.02 4.04 3.67 1.33 61.37
1976 6.76 1.39 2.13 0.83 1.91 1.64 7.12 4.40 3.00 8.09 0.87 2.42 40.56
1977 2.16 1.24 2.17 2.44 1.01 3.85 2.80 3.71 6.50 4.79 6.02 6.99 43.68
1978 7.22 0.66 6.30 1.83 5.60 3.21 6.57 7.36 0.00 z 1.78 2.78 4.76 48.07
1979 0.00 z 6.21 3.12 3.53 3.66 5.68 3.88 5.41 5.08 5.20 3.32 1.69 46.78
1980 3.46 0.71 6.32 4.34 2.79 5.23 4.39 3.95 4.30 0.00 z 2.36 0.80 38.65
1981 0.35 2.72 1.59 4.60 4.44 4.01 2.18 2.52 6.00 2.50 0.56 4.12 35.59
1982 4.38 a 3.57 2.82 5.00 1.66 4.77 2.86 2.36 3.06 1.97 4.24 2.87 39.56
1983 1.48 3.58 6.90 8.13 7.01 5.61 3.69 4.53 3.38 3.02 5.42 5.94 58.69
1984 2.01 4.02 6.94 4.81 7.12 2.06 4.06 1.64 2.57 2.19 2.50 1.72 41.64
1985 2.54 2.44 2.54 0.65 6.12 2.19 8.44 7.71 7.76 1.97 2.87 1.54 46.77
1986 3.84 3.46 2.29 2.09 1.20 2.39 1.82 3.94 1.73 2.45 5.46 6.66 37.33
1987 5.75 1.20 2.42 3.85 4.44 1.43 2.79 2.14 4.24 2.34 2.93 2.67 36.20
1988 3.58 4.57 2.35 2.63 5.23 1.96 4.19 3.98 2.72 2.57 5.74 0.82 40.34
1989 3.35 4.18 6.31 5.05 7.53 9.13 6.24 6.11 7.64 3.73 2.20 1.35 62.82
1990 4.00 1.39 3.93 4.28 7.81 2.18 4.06 3.24 2.30 3.14 1.20 4.14 41.67
1991 5.13 1.48 5.65 3.42 1.44 2.28 6.52 3.41 3.84 2.13 0.54 5.05 40.89
1992 0.98 2.62 4.32 1.42 4.87 2.64 2.34 7.07 5.86 1.53 2.93 3.05 39.63
1993 2.69 2.95 6.16 4.42 1.80 0.95 3.16 4.79 3.69 3.62 3.32 4.32 41.87
1994 5.55 4.78 9.24 2.85 3.85 2.39 3.67 6.28 3.81 0.67 3.10 1.45 47.64
1995 3.54 2.46 2.49 1.57 4.41 1.89 2.59 3.03 4.16 4.90 4.49 2.51 38.04
1996 5.50 2.40 3.94 5.11 6.76 9.90 3.84 5.83 3.89 4.80 1.54 8.39 61.90
1997 2.97 3.31 4.78 4.26 4.76 3.49 1.80 7.66 2.10 2.48 6.55 2.77 46.93
1998 5.19 5.50 5.57 2.86 4.63 3.13 1.69 4.86 2.90 1.94 1.21 2.57 42.05
1999 6.53 2.31 4.98 2.37 0.90 2.48 2.42 3.53 10.51 2.93 2.74 2.53 44.23
2000 3.34 2.92 7.97 4.39 3.25 3.97 5.18 7.82 5.99 0.26 3.00 3.39 51.48
2001 3.18 3.49 5.62 1.55 5.46 5.18 4.99 3.27 2.35 1.09 0.73 1.84 38.75
2002 2.57 0.61 4.40 4.45 3.79 4.82 2.82 2.28 5.81 8.82 6.20 4.92 51.49
2003 1.89 7.02 4.12 3.83 5.63 7.55 6.87 7.16 4.49 3.22 5.41 5.78 62.97
2004 2.19 2.16 3.08 5.65 2.03 a 5.04 7.89 a 4.30 3.40 1.53 5.01 2.60 44.88
2005 4.00 1.86 3.64 5.65 4.38 5.93 3.98 3.88 0.26 9.00 4.44 0.00 z 47.02
2006 3.61 1.39 0.24 3.85 1.46 7.79 6.83 0.28 5.78 5.52 6.14 1.55 44.44
2007 3.99 3.25 3.50 6.60 1.35 4.96 1.97 2.41 1.36 4.67 2.21 5.21 41.48
2008 2.32 3.94 2.79 3.12 6.85 2.60 4.73 0.59 3.89 b 3.11 4.23 4.95 43.12
2009 2.88 0.00 z 0.00 z 5.31 5.07 5.94 2.06 9.02 5.97 6.81 4.07 8.69 55.82
2010 2.80 3.83 5.62 2.50 2.13 1.41 6.88 4.03 2.13 7.60 3.25 2.28 44.46
2011 3.09 2.52 3.16 3.32 a 3.37 1.83 4.22 a 8.63 a 3.84 3.17 0.55 c 4.37 42.07
2012 1.65 0.98 a 1.33 0.35 a 0.02 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 4.31
Period of Record Statistics
MEAN 3.44 3.00 3.92 3.60 3.85 3.80 4.30 4.95 3.86 3.20 3.25 3.43 44.37
S.D. 1.54 1.41 1.72 1.56 2.05 1.96 2.64 3.37 2.32 1.85 1.74 1.78 8.41
SKEW 0.77 0.58 0.56 0.26 0.97 0.78 1.43 1.28 1.13 0.82 0.43 0.88 0.44
MAX 8.09 7.02 9.24 8.13 12.96 9.90 14.24 16.08 11.85 9.00 7.88 8.69 62.97
MIN 0.35 0.61 0.24 0.35 0.58 0.68 0.85 0.28 0.00 0.00 0.54 0.39 21.37
NO YRS 103 101 99 102 102 102 101 103 101 100 104 102 68