CAMBRIDGE WATER TRMT PL, MARYLAND

Monthly Total Precipitation (inches)

(181385)

File last updated on May 16,
*** Note *** Provisional Data *** After Year/Month 199106
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 2.71 4.80 3.60 5.45 u 4.84 3.14 x 7.12 0.00 z 3.24 u 3.51 z 6.25 4.05 33.37
1894 3.13 5.70 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 8.83
1895 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 2.76 2.57 1.65 6.98
1896 1.19 3.59 w 3.82 w 1.45 y 4.66 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 5.85
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 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
1899 0.00 z 0.00 z 5.84 c 1.50 3.98 e 4.40 7.15 5.51 3.66 m 3.97 1.05 1.73 35.13
1900 3.25 4.05 3.25 e 2.50 a 1.65 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 14.70
1901 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 2.85 0.00 z 0.00 z 0.00 z 0.00 z 1.66 y 5.31 8.16
1902 3.30 5.64 3.82 4.18 2.93 7.04 5.99 2.02 4.49 6.14 2.70 5.36 53.61
1903 4.71 6.56 6.94 3.20 1.81 4.36 4.70 7.15 3.04 5.97 1.83 4.27 54.54
1904 2.68 3.16 4.24 2.68 2.74 3.14 5.09 0.73 5.10 2.03 2.86 y 4.29 35.88
1905 3.26 2.96 2.70 2.87 3.55 2.41 5.96 5.60 3.58 1.30 0.66 4.16 39.01
1906 2.77 s 5.06 4.74 2.27 4.62 y 4.31 5.46 p 10.62 1.99 5.17 1.96 3.62 39.74
1907 1.94 2.65 2.87 4.20 7.74 6.03 3.61 w 2.72 5.25 3.71 6.65 3.56 47.32
1908 3.34 3.38 2.75 3.89 3.14 3.24 4.87 6.67 2.77 4.07 1.44 5.06 44.62
1909 3.34 2.21 q 5.61 t 3.85 3.39 7.39 r 2.90 x 2.66 2.90 1.22 2.27 3.80 23.43
1910 4.23 2.24 3.86 5.83 2.30 6.23 2.58 3.98 1.24 6.04 4.06 3.43 46.02
1911 5.26 2.68 3.27 3.92 0.36 1.93 0.93 11.89 p 2.29 3.91 5.55 3.80 33.90
1912 4.40 2.55 9.08 2.82 5.63 2.64 1.26 z 2.31 6.18 2.16 2.63 4.39 44.79
1913 3.13 1.55 4.23 4.90 3.78 1.86 1.57 3.92 2.75 5.08 1.41 2.40 36.58
1914 4.53 2.18 s 2.87 s 2.98 2.97 5.64 2.12 3.22 0.47 1.44 2.09 4.73 30.19
1915 5.57 4.05 0.90 1.22 3.30 4.68 3.45 8.61 0.88 5.13 0.84 3.32 41.95
1916 1.87 3.31 2.68 3.44 4.07 3.92 6.50 0.97 3.92 1.75 2.13 4.40 38.96
1917 3.00 1.95 7.25 2.81 3.06 2.07 10.82 2.65 2.12 9.55 0.88 1.70 47.86
1918 4.00 1.20 4.01 8.39 3.71 2.45 4.39 2.97 3.55 0.66 z 1.00 3.55 39.22
1919 4.28 2.71 3.84 4.01 6.17 2.02 z 6.32 7.24 2.12 4.07 4.48 2.84 48.08
1920 3.45 4.78 4.08 4.30 1.57 y 6.23 4.12 10.90 0.00 z 1.24 5.05 2.72 y 44.15
1921 2.76 3.44 r 3.30 3.51 4.30 0.77 2.41 2.03 2.02 1.20 3.52 2.23 28.05
1922 5.52 3.14 4.94 2.20 w 1.81 5.44 p 11.78 2.89 1.66 1.76 0.85 4.17 38.52
1923 5.61 2.66 7.11 5.53 1.51 3.12 4.46 2.60 4.71 2.62 3.41 2.58 45.92
1924 4.11 3.56 4.93 5.34 5.43 5.43 1.21 5.90 7.61 1.78 2.07 2.93 50.30
1925 5.97 2.28 t 2.26 1.93 0.90 1.80 4.57 2.12 1.01 4.20 3.25 2.30 30.31
1926 3.08 3.51 2.09 1.42 1.05 a 1.99 6.13 a 6.97 3.64 2.38 2.59 a 2.97 c 37.82
1927 1.88 3.41 1.59 3.42 a 5.79 3.25 4.10 5.27 0.56 9.94 c 2.61 3.63 45.45
1928 2.62 2.68 t 2.26 4.99 1.68 k 5.15 g 1.76 13.95 8.04 0.76 0.12 v 1.77 36.15
1929 1.51 4.60 4.43 8.24 1.75 6.74 0.85 2.63 2.19 5.14 2.83 2.65 p 40.91
1930 3.81 1.51 1.13 1.62 2.79 2.26 2.85 1.83 0.70 1.17 1.55 2.41 23.63
1931 1.79 1.70 4.60 2.89 4.49 2.99 3.19 14.49 2.82 2.72 1.59 2.77 46.04
1932 4.95 2.86 5.80 2.80 4.28 5.70 2.86 2.41 2.02 5.20 4.65 3.02 46.55
1933 2.86 4.00 1.70 4.26 5.11 1.93 4.97 9.70 2.04 1.69 1.83 3.52 43.61
1934 1.72 4.03 5.27 n 2.57 6.12 3.75 4.56 3.76 5.78 q 2.07 3.15 1.76 33.49
1935 5.01 3.19 3.29 3.81 3.79 8.04 l 7.50 3.20 16.26 2.27 4.94 2.50 55.76
1936 6.26 5.22 4.74 3.11 1.40 4.39 2.88 3.24 2.73 2.12 0.82 5.20 42.11
1937 8.43 2.28 1.72 5.33 m 4.78 4.03 4.72 5.92 2.70 5.85 4.30 1.14 45.87
1938 2.36 3.01 3.05 2.02 4.89 3.65 10.45 n 0.50 6.91 2.42 3.22 4.61 36.64
1939 3.70 6.09 3.76 4.93 0.74 3.15 4.56 6.40 5.55 5.25 s 1.17 1.76 41.81
1940 4.15 2.57 4.05 4.32 4.02 1.07 2.03 7.55 4.42 2.92 4.50 1.99 43.59
1941 2.99 1.98 2.43 3.95 2.14 3.15 9.10 5.35 0.88 3.28 1.63 4.55 41.43
1942 3.66 1.93 5.86 0.65 3.02 3.04 4.70 7.89 2.78 4.29 1.90 t 2.80 t 37.82
1943 2.30 2.64 4.59 s 3.04 2.95 2.20 0.85 r 0.25 0.00 z 4.77 0.00 z 1.44 19.59
1944 3.55 3.11 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 6.66
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 0.70 x 1.56 2.02 2.56 4.99 j 5.30 5.49 4.72 u 3.29 1.72 1.91 2.63 26.48
1947 4.26 1.25 2.43 4.17 5.03 u 3.58 v 2.99 1.26 2.69 1.44 6.18 1.84 28.51
1948 5.92 n 2.80 4.36 2.88 7.78 4.27 6.19 11.43 2.21 3.89 9.36 4.61 59.78
1949 5.62 3.22 3.18 3.07 3.62 2.93 3.72 3.22 3.03 5.33 2.60 1.45 40.99
1950 1.58 b 2.98 4.74 2.68 3.40 2.09 4.99 3.31 5.88 1.32 2.96 2.33 38.26
1951 1.63 1.89 3.00 4.01 3.23 4.41 2.71 1.79 6.07 2.92 5.92 3.94 41.52
1952 4.84 2.89 4.90 6.24 4.17 1.95 3.07 9.46 3.38 1.47 7.08 4.37 53.82
1953 4.33 2.98 5.36 4.16 4.40 a 4.19 3.32 5.86 2.65 2.66 1.94 3.87 45.72
1954 2.37 2.04 3.54 4.17 2.23 0.64 4.08 2.48 1.99 2.50 3.43 3.02 32.49
1955 0.94 3.33 3.76 2.50 2.11 7.29 2.73 17.34 3.73 2.83 3.39 0.61 50.56
1956 2.06 3.12 4.62 2.38 2.36 3.83 4.10 2.12 2.72 3.52 7.32 3.63 41.78
1957 3.36 4.10 3.62 1.97 0.65 3.23 2.14 a 2.88 a 5.44 4.61 5.56 6.30 43.86
1958 4.16 3.88 7.54 5.46 6.39 3.63 4.08 9.46 1.99 3.21 2.09 3.14 55.03
1959 1.44 1.77 3.20 3.84 2.52 0.99 7.89 5.47 1.04 5.23 6.00 5.71 45.10
1960 3.12 3.24 2.67 h 2.20 d 8.48 2.17 11.25 3.04 9.45 4.13 1.98 3.33 52.39
1961 4.45 6.40 5.04 3.82 4.35 5.04 3.94 4.07 0.50 6.17 1.79 4.96 50.53
1962 2.34 5.70 3.65 5.27 1.81 4.50 1.59 0.93 3.02 1.95 6.48 2.31 b 39.55
1963 2.46 1.69 7.14 1.42 2.63 5.40 2.00 1.97 4.83 0.05 5.88 2.20 37.67
1964 4.40 4.54 3.38 3.83 0.73 2.10 7.78 1.76 3.50 2.34 2.76 3.35 40.47
1965 3.77 2.78 4.24 2.53 0.83 2.60 5.47 9.61 2.57 1.39 0.44 0.82 37.05
1966 3.86 3.61 1.96 4.19 2.86 1.56 3.08 0.89 6.17 5.17 1.05 3.30 37.70
1967 1.46 2.83 2.26 1.75 5.18 2.80 4.60 8.94 1.94 1.50 2.36 5.32 40.94
1968 2.97 0.54 4.28 1.49 3.80 4.85 3.30 2.63 1.48 2.25 3.52 2.66 33.77
1969 2.09 2.43 3.11 3.81 2.52 2.05 7.63 9.79 2.72 1.43 1.78 7.91 47.27
1970 2.41 2.69 4.45 3.15 3.47 5.69 4.36 2.25 2.18 2.21 3.75 3.66 40.27
1971 3.17 6.10 3.14 2.60 6.92 1.27 2.30 9.38 1.27 7.27 3.64 1.96 49.02
1972 4.05 6.19 2.53 3.88 5.10 10.66 4.05 5.82 3.86 4.02 6.84 4.95 61.95
1973 4.23 2.82 2.75 4.25 2.87 2.38 2.24 4.32 3.03 4.12 1.71 5.75 40.47
1974 3.91 2.17 5.34 1.63 5.71 4.60 1.25 7.15 3.43 0.90 1.18 5.09 42.36
1975 5.38 2.83 5.92 3.08 3.51 7.59 6.86 3.59 8.20 3.35 3.14 2.88 56.33
1976 6.06 1.42 2.68 1.49 3.21 0.63 3.18 2.16 3.62 7.13 1.56 2.72 35.86
1977 2.17 1.08 2.03 2.47 3.65 3.44 2.24 3.15 6.48 3.72 8.56 6.12 45.11
1978 7.57 0.73 5.24 b 3.14 5.40 2.93 5.51 6.16 0.92 1.01 3.02 4.53 46.16
1979 6.57 7.81 3.52 3.63 4.50 2.49 7.88 9.59 7.16 4.14 4.34 2.17 63.80
1980 2.98 1.13 6.00 3.30 1.85 2.11 5.68 4.33 6.23 5.23 3.10 0.58 42.52
1981 0.45 4.27 2.34 4.31 5.83 4.10 7.07 1.89 3.17 2.63 0.67 5.15 41.88
1982 3.93 3.68 a 3.51 5.81 3.41 0.00 z 4.60 1.16 1.78 1.55 5.21 2.02 36.66
1983 1.55 2.60 a 6.23 7.10 6.47 3.01 2.44 2.66 3.98 3.61 5.66 8.90 54.21
1984 3.01 3.86 7.01 4.42 9.02 2.12 7.27 5.76 1.10 2.79 3.31 1.33 51.00
1985 3.41 3.13 1.79 0.62 4.89 3.49 2.39 7.38 7.78 1.80 3.21 1.23 41.12
1986 4.44 2.81 1.79 1.14 0.82 0.87 3.70 4.75 0.87 2.89 3.67 7.91 35.66
1987 5.22 2.04 2.31 2.29 2.34 1.99 2.37 0.51 2.49 2.13 5.40 2.59 31.68
1988 3.67 4.23 2.61 2.93 3.13 0.57 4.61 3.77 1.80 2.41 5.68 0.65 36.06
1989 2.69 3.26 5.51 5.65 5.01 6.93 8.00 2.80 4.01 3.02 1.55 1.34 49.77
1990 3.86 1.86 3.51 4.31 9.79 1.88 5.10 6.49 2.20 3.01 1.07 4.24 47.32
1991 4.68 1.26 5.13 2.30 0.93 3.00 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 17.30
Period of Record Statistics
MEAN 3.56 3.19 3.90 3.45 3.71 3.49 4.53 4.91 3.50 3.28 3.28 3.41 43.94
S.D. 1.48 1.45 1.63 1.50 1.96 1.86 2.33 3.47 2.46 1.88 1.99 1.65 7.27
SKEW 0.57 0.79 0.68 0.79 0.71 0.99 0.90 1.15 2.08 1.11 0.82 0.74 0.28
MAX 8.43 7.81 9.08 8.39 9.79 10.66 11.78 17.34 16.26 9.94 9.36 8.90 63.80
MIN 0.45 0.54 0.90 0.62 0.36 0.57 0.85 0.25 0.47 0.05 0.44 0.58 23.63
NO YRS 90 87 86 88 87 83 83 86 84 87 86 88 60