BALTIMORE WSO CITY, MARYLAND

Monthly Total Precipitation (inches)

(180470)

File last updated on May 16,
*** Note *** Provisional Data *** After Year/Month 200112
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 1.78 4.43 1.38 3.52 3.78 2.26 1.88 1.81 1.80 3.44 a 3.78 2.29 32.15
1894 1.46 3.53 1.19 3.80 a 7.26 a 3.29 1.73 1.41 4.75 3.80 1.98 4.12 38.32
1895 4.67 0.83 2.94 7.42 3.04 2.83 3.40 a 2.43 6.01 2.20 1.86 2.84 40.47
1896 2.62 a 7.07 4.70 1.44 1.61 3.94 6.32 1.93 4.14 1.11 3.34 0.37 38.59
1897 2.03 a 5.13 2.40 3.19 6.88 a 2.57 6.93 4.71 2.17 3.67 4.39 3.40 47.47
1898 2.99 1.32 2.58 1.84 3.86 1.06 3.51 6.09 1.56 3.97 4.34 3.34 36.46
1899 3.50 5.47 4.93 1.89 3.29 2.16 1.64 4.86 4.95 a 2.09 2.27 1.40 38.45
1900 2.11 4.65 3.17 2.06 1.00 4.34 1.51 2.91 4.26 1.68 1.81 2.07 31.57
1901 2.45 0.65 3.58 5.53 3.67 0.90 6.18 6.73 2.50 1.52 2.26 7.07 43.04
1902 3.05 4.68 3.41 2.90 1.62 4.30 2.45 4.31 7.19 6.85 a 3.71 5.66 50.13
1903 3.81 5.43 4.40 3.29 3.33 5.01 7.65 5.88 1.00 3.54 0.73 2.19 46.26
1904 2.86 1.50 2.88 2.37 1.84 3.27 4.58 1.95 5.90 3.73 1.87 3.34 36.09
1905 4.69 2.40 3.23 3.07 1.76 4.05 10.65 6.85 2.14 2.04 1.35 4.32 46.55
1906 3.25 2.21 4.63 3.31 2.73 5.10 7.96 5.80 0.32 5.74 1.74 4.06 46.85
1907 3.20 1.93 2.94 3.13 2.92 5.22 5.76 4.60 8.52 1.61 5.02 4.30 49.15
1908 3.49 4.72 2.50 1.09 4.04 1.08 4.34 5.17 2.59 2.59 0.77 3.04 35.42
1909 2.78 3.25 4.58 2.18 4.59 4.38 1.31 0.86 3.97 1.03 1.15 4.62 34.70
1910 4.68 2.28 0.46 7.76 2.95 5.30 0.95 1.37 2.13 2.71 1.93 2.45 34.97
1911 3.48 2.31 2.45 2.69 3.45 5.52 3.53 12.28 1.60 3.31 4.28 3.68 48.58
1912 2.63 2.75 6.64 1.94 3.30 3.09 5.96 3.25 8.75 0.72 1.93 4.17 45.13
1913 2.45 1.61 3.89 5.15 3.12 1.47 2.63 6.38 1.51 3.50 1.82 2.58 36.11
1914 5.66 2.89 1.80 4.55 1.17 1.64 2.55 6.74 1.64 1.24 2.18 4.34 36.40
1915 6.81 4.75 1.06 1.37 3.19 6.23 2.22 9.94 2.30 3.86 1.59 3.08 46.40
1916 1.51 3.21 3.61 3.68 3.49 5.33 5.04 0.83 1.82 1.61 1.97 3.94 36.04
1917 3.04 1.75 3.80 2.21 3.24 4.05 7.09 2.39 2.86 5.01 0.52 1.96 37.92
1918 5.00 1.04 4.17 6.79 3.17 1.75 2.28 3.35 3.01 0.76 1.50 4.72 37.54
1919 3.51 2.62 4.22 4.05 5.46 2.69 7.21 6.45 2.31 2.50 3.10 3.11 47.23
1920 1.87 3.41 2.56 4.84 2.30 8.25 4.94 9.47 3.08 0.17 3.96 3.58 48.43
1921 2.05 2.85 2.60 2.59 5.99 1.97 4.93 3.49 3.19 1.61 4.37 2.08 37.72
1922 4.88 2.94 4.83 0.65 4.00 4.45 7.28 1.11 2.69 5.58 0.44 3.43 42.28
1923 4.14 2.51 4.12 3.68 2.59 1.84 2.04 3.14 3.85 2.83 2.04 3.88 36.66
1924 4.33 4.14 6.66 5.89 5.80 5.54 1.99 5.22 5.75 0.05 1.37 2.30 49.04
1925 5.35 0.98 2.00 2.66 1.86 1.01 5.57 2.41 0.75 5.43 3.16 1.54 32.72
1926 3.10 4.27 2.19 1.46 2.60 2.46 5.74 5.58 4.19 4.24 6.46 2.89 45.18
1927 1.38 3.78 1.47 5.48 2.03 2.96 1.41 3.04 1.95 6.90 2.22 3.61 36.23
1928 2.76 2.89 3.12 6.26 3.09 4.43 3.54 9.70 4.35 0.26 1.78 1.22 43.40
1929 2.90 3.45 3.16 6.73 1.78 4.82 1.13 4.04 2.79 6.77 2.44 2.46 42.47
1930 2.66 2.38 2.27 3.12 2.91 2.97 0.64 0.78 0.37 0.37 1.13 1.95 21.55
1931 1.89 1.41 4.62 2.77 5.80 1.89 6.04 7.98 2.05 1.79 1.13 2.20 39.57
1932 5.85 2.08 6.48 2.15 5.51 2.91 2.42 3.92 1.47 7.17 6.17 3.45 49.58
1933 3.37 2.95 4.60 7.58 5.17 3.09 3.90 13.83 3.28 1.76 0.96 2.47 52.96
1934 2.53 3.29 4.47 2.32 4.04 5.39 2.24 6.63 12.41 0.95 3.51 3.10 50.88
1935 4.79 2.74 2.82 5.12 4.51 5.01 4.55 3.97 7.59 2.63 5.63 2.16 51.52
1936 5.94 3.75 6.42 2.56 3.18 1.48 4.89 4.60 2.16 1.73 0.79 7.10 44.60
1937 6.74 3.52 1.93 7.92 3.27 3.53 3.81 5.06 1.10 7.75 5.21 0.95 50.79
1938 2.23 3.10 2.44 1.40 4.86 1.49 4.87 2.43 5.05 2.15 2.11 2.66 34.79
1939 3.77 6.52 3.75 5.92 1.47 3.86 2.41 3.52 3.08 4.01 0.76 1.87 40.94
1940 1.81 3.97 3.97 6.99 4.41 2.37 2.85 5.60 1.32 2.37 5.99 2.68 44.33
1941 3.29 1.07 2.20 3.29 3.61 7.77 5.61 1.60 0.50 0.99 1.32 3.48 34.73
1942 2.04 2.79 6.50 0.88 4.19 2.26 4.46 7.01 1.82 8.41 2.36 3.96 46.68
1943 3.53 2.08 4.38 2.56 4.76 1.29 4.95 0.86 1.84 6.29 2.77 1.44 36.75
1944 5.04 2.20 6.04 3.80 1.72 2.55 2.81 4.13 a 5.39 4.01 3.93 3.83 45.45
1945 3.75 3.44 1.41 3.55 3.50 2.65 9.68 2.48 5.06 1.18 3.92 5.99 46.61
1946 1.66 3.33 1.89 1.56 6.39 3.65 5.37 4.02 3.98 2.59 1.24 1.97 37.65
1947 3.89 1.87 1.54 5.56 3.95 7.48 4.92 3.74 3.54 1.20 6.92 a 1.63 46.24
1948 5.83 1.89 3.85 2.92 6.41 9.36 1.94 5.75 2.27 3.62 5.40 5.47 54.71
1949 6.13 3.41 2.74 2.44 5.90 1.19 3.24 2.82 2.33 4.11 1.13 2.25 37.69
1950 2.13 4.12 4.30 1.37 5.00 3.81 3.07 2.96 7.71 2.96 2.16 4.37 43.96
1951 2.85 3.56 3.21 3.63 3.84 9.14 3.11 0.77 3.48 2.29 6.03 5.02 46.93
1952 4.30 2.23 4.66 8.18 6.59 3.79 7.11 3.81 4.53 0.74 6.25 3.70 55.89
1953 4.78 2.77 6.57 3.86 5.62 6.49 4.54 3.25 3.72 2.75 1.50 3.47 49.32
1954 1.84 1.07 4.45 3.04 2.72 0.37 2.18 4.34 1.59 3.32 2.67 2.87 30.46
1955 0.33 2.82 3.93 2.88 2.13 7.83 0.35 17.69 1.26 7.01 1.48 0.15 47.86
1956 2.21 3.98 4.32 2.55 1.84 4.83 6.02 2.05 3.13 4.19 2.83 3.31 41.26
1957 1.92 2.92 2.55 3.27 1.83 4.18 1.82 1.09 7.77 1.71 3.19 5.45 37.70
1958 3.89 3.90 6.72 4.68 3.51 4.59 11.50 4.74 1.45 2.35 2.31 1.43 51.07
1959 2.59 1.85 3.23 3.03 2.09 2.88 4.83 4.19 1.39 3.83 2.24 3.60 35.75
1960 2.18 5.17 2.55 3.85 7.23 1.17 6.12 3.11 6.65 2.07 1.09 2.72 43.91
1961 3.15 4.74 4.00 4.47 2.49 3.18 3.72 5.17 0.67 2.92 2.75 2.79 40.05
1962 2.12 4.73 5.44 3.83 2.23 2.75 2.40 0.30 2.42 2.76 6.14 2.94 38.06
1963 1.78 2.03 4.50 1.47 1.51 4.84 0.91 3.86 4.38 0.12 6.58 2.12 34.10
1964 5.24 4.51 3.08 4.86 0.61 1.79 3.01 1.76 3.49 0.92 2.88 5.04 37.19
1965 3.16 3.13 4.40 1.64 3.04 2.10 2.27 5.56 2.06 1.89 0.82 0.73 30.80
1966 3.82 4.26 0.93 4.29 4.35 0.96 1.41 2.00 7.24 4.07 3.17 3.29 39.79
1967 1.22 1.92 4.99 1.77 4.27 1.78 4.50 10.51 0.07 1.38 2.38 5.79 40.58
1968 3.34 0.77 4.60 1.82 4.98 2.62 2.68 4.84 4.55 2.99 3.98 2.89 40.06
1969 1.06 1.72 1.44 1.98 1.49 3.30 5.23 3.01 2.74 1.27 2.13 7.85 33.22
1970 0.80 3.44 3.48 3.98 1.75 4.74 3.83 2.76 0.37 2.43 4.77 3.69 36.04
1971 2.32 6.44 2.20 2.04 6.15 3.43 3.53 14.86 5.13 8.00 6.03 1.44 61.57
1972 2.94 6.09 2.75 6.12 4.56 9.98 2.50 2.24 0.83 3.96 8.76 5.99 56.72
1973 3.23 3.05 4.34 7.56 4.63 3.87 2.80 2.34 4.75 2.89 1.08 6.96 47.50
1974 2.78 0.81 3.84 2.88 4.16 2.51 0.69 6.61 6.01 1.34 1.77 8.06 41.46
1975 3.60 2.50 5.91 3.04 8.08 3.70 11.68 3.84 8.79 2.51 2.44 5.43 61.52
1976 4.34 2.05 2.26 1.89 4.79 2.32 3.44 3.46 8.49 8.66 0.54 1.87 44.11
1977 1.42 0.66 4.13 3.58 1.06 3.61 3.17 3.13 2.86 4.66 5.18 6.66 40.12
1978 8.12 0.86 4.75 1.44 4.56 2.39 5.36 6.14 1.74 0.82 3.14 5.97 45.29
1979 8.64 6.92 2.66 3.71 4.12 3.70 5.48 8.72 7.32 5.76 3.07 1.26 61.36
1980 2.26 1.27 5.96 3.93 3.31 2.45 4.71 0.82 0.97 2.95 3.00 0.78 32.41
1981 0.41 3.57 1.21 2.31 0.00 z 0.00 z 0.00 z 2.46 3.63 2.61 0.42 3.38 20.00
1982 3.17 3.24 2.68 4.51 3.48 4.54 1.29 1.83 3.28 1.70 3.05 1.61 34.38
1983 2.73 4.86 9.76 7.30 5.53 6.15 2.08 1.23 1.78 4.41 5.24 7.14 58.21
1984 1.56 4.33 5.65 2.98 5.04 2.49 3.75 3.18 1.23 2.04 3.54 1.99 37.78
1985 2.16 3.35 2.75 0.35 6.51 1.78 5.24 4.25 6.32 1.91 5.27 0.80 40.69
1986 2.40 3.17 1.03 2.73 0.60 1.39 3.12 8.46 0.69 2.07 5.95 6.22 37.83
1987 5.71 2.21 1.47 1.71 5.00 3.82 2.04 1.28 6.34 2.47 4.37 2.24 38.66
1988 3.38 3.08 2.19 2.04 5.34 1.06 3.46 5.30 1.99 1.61 5.28 0.89 35.62
1989 3.22 3.48 4.05 2.39 9.31 6.25 8.28 1.81 3.52 5.08 1.92 1.51 50.82
1990 4.18 2.30 2.54 4.52 4.64 2.65 3.88 6.55 1.33 3.14 2.44 5.05 43.22
1991 3.20 0.77 5.03 1.81 1.14 0.62 2.72 2.27 2.90 2.43 2.08 4.58 29.55
1992 1.60 2.48 4.13 1.54 3.11 2.39 4.68 2.88 5.61 2.28 4.30 3.94 38.94
1993 2.64 2.62 8.63 3.80 2.23 2.76 2.27 3.40 5.07 3.09 3.66 4.48 44.65
1994 4.08 4.22 8.61 1.89 2.45 2.62 4.89 4.50 2.55 1.17 2.52 1.92 41.42
1995 3.22 1.85 1.61 1.39 3.40 1.28 0.00 z 0.00 z 3.26 6.34 0.00 z 0.00 z 22.35
1996 0.00 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
1997 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
1998 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
1999 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 4.11 8.23 10.84 3.04 1.92 3.19 31.33
2000 3.40 0.07 i 4.03 5.10 1.21 2.71 7.56 3.20 5.44 0.13 1.98 2.44 37.20
2001 2.33 2.33 4.75 1.68 5.39 3.34 c 2.24 0.00 z 1.88 0.71 2.50 1.74 28.89
Period of Record Statistics
MEAN 3.23 3.05 3.68 3.44 3.71 3.50 4.07 4.42 3.55 2.99 2.98 3.34 42.16
S.D. 1.55 1.43 1.74 1.83 1.74 1.97 2.30 3.07 2.42 1.97 1.77 1.72 7.44
SKEW 0.87 0.55 0.81 0.86 0.52 1.08 1.02 1.70 1.11 0.96 0.80 0.67 0.42
MAX 8.64 7.07 9.76 8.18 9.31 9.98 11.68 17.69 12.41 8.66 8.76 8.06 61.57
MIN 0.00 0.65 0.46 0.35 0.60 0.37 0.35 0.30 0.07 0.05 0.42 0.15 21.55
NO YRS 106 104 105 105 104 104 104 104 106 106 105 105 101