DURHAM, NORTH CAROLINA

Monthly Total Precipitation (inches)

(312515)

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
1899 0.00 z 0.00 z 9.55 2.90 4.90 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 17.35
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 2.10 1.70 5.85 5.68 8.40 b 2.24 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 25.97
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 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
1907 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
1908 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 2.37 a 4.37 3.11 4.01 13.86
1909 1.58 a 3.85 2.49 4.53 2.74 6.17 3.03 9.35 4.12 2.55 0.19 2.80 43.40
1910 3.30 2.73 1.80 4.80 3.48 5.88 2.20 7.51 1.78 5.19 0.95 4.46 44.08
1911 1.94 2.37 3.57 2.25 1.67 3.00 1.89 8.02 0.73 3.26 4.34 4.87 37.91
1912 2.99 2.40 6.08 3.91 5.00 2.97 3.38 0.66 2.96 1.12 2.58 2.50 36.55
1913 2.99 1.96 5.59 2.69 2.69 4.32 2.25 3.03 7.33 2.74 2.08 3.17 40.84
1914 2.87 3.94 3.47 1.60 1.01 4.83 5.26 6.71 3.51 3.74 3.67 5.84 a 46.45
1915 6.00 a 3.89 1.90 1.90 4.12 3.86 3.19 5.12 1.74 4.27 1.67 2.49 40.15
1916 2.06 a 3.95 1.75 3.02 2.16 7.50 5.36 4.56 1.89 2.69 1.07 2.88 38.89
1917 3.85 3.43 7.06 2.92 3.15 7.27 6.87 2.32 3.52 2.68 1.45 2.31 46.83
1918 3.72 1.17 3.64 6.61 3.87 3.51 5.46 3.10 3.83 0.87 3.19 4.39 43.36
1919 5.66 3.34 2.98 3.15 5.62 1.66 12.12 a 3.70 0.21 2.95 0.43 0.59 42.41
1920 2.78 2.92 2.76 4.97 2.04 5.00 5.82 9.09 3.46 0.80 3.80 4.30 47.74
1921 3.97 2.53 3.31 1.67 3.30 1.62 2.41 0.70 1.60 1.28 3.01 2.35 a 27.75
1922 4.32 4.80 a 6.63 3.06 5.70 3.71 4.95 2.71 0.03 5.25 0.32 2.86 44.34
1923 2.95 2.69 5.69 3.59 2.49 1.33 3.60 3.31 4.55 1.18 1.55 2.07 35.00
1924 3.63 2.30 1.81 2.90 5.97 4.41 6.20 4.23 10.54 0.97 1.63 2.53 47.12
1925 5.99 1.22 1.25 1.89 2.08 2.47 0.33 3.36 1.91 2.14 1.37 1.45 25.46
1926 3.94 4.40 3.47 2.32 0.89 2.12 2.49 1.92 0.76 1.41 2.93 4.08 30.73
1927 1.52 2.86 2.75 3.14 0.53 4.79 6.66 4.21 2.33 4.05 1.98 3.86 38.68
1928 1.87 2.57 1.93 c 5.76 2.30 3.43 a 5.93 d 5.26 7.63 1.10 0.33 1.14 39.25
1929 1.43 6.07 a 5.12 3.08 4.48 7.44 4.10 7.90 1.80 6.19 4.53 1.79 53.93
1930 2.94 1.05 1.79 2.01 3.00 5.38 3.69 1.25 2.80 2.60 1.30 3.32 31.13
1931 1.48 1.17 1.88 4.03 4.76 2.04 3.88 7.91 0.18 1.21 a 0.11 4.91 33.56
1932 4.27 2.36 3.06 1.50 3.10 3.15 1.25 1.73 0.69 6.96 5.06 4.43 37.56
1933 2.55 2.54 1.68 3.81 a 1.48 3.44 5.01 4.15 0.17 0.83 0.49 1.56 27.71
1934 1.18 4.08 4.11 3.18 4.58 5.61 4.72 5.22 5.60 0.71 6.35 1.94 47.28
1935 2.37 1.63 3.99 3.20 3.37 1.00 5.47 1.54 6.01 2.11 2.71 2.62 36.02
1936 5.90 4.44 5.32 5.71 0.22 5.92 7.56 4.18 2.70 3.46 1.88 4.93 52.22
1937 6.00 3.45 1.55 4.98 0.64 3.28 3.82 14.07 3.26 3.61 1.41 1.65 47.72
1938 3.47 0.73 4.16 3.39 4.19 5.83 5.80 2.92 3.62 1.25 2.71 3.68 41.75
1939 4.17 7.32 4.82 3.52 2.47 5.95 7.68 4.43 0.65 2.24 1.41 2.08 46.74
1940 3.21 2.66 3.32 3.06 4.88 2.63 2.53 7.42 0.55 0.48 5.86 2.29 38.89
1941 1.54 1.26 3.00 2.01 1.76 1.85 5.24 0.91 1.72 0.85 0.40 2.20 22.74
1942 1.34 3.21 4.39 0.69 4.65 3.27 5.19 3.68 6.38 4.43 1.86 4.40 43.49
1943 3.72 1.37 4.14 3.12 2.90 5.52 7.14 1.60 2.24 0.36 1.25 3.39 36.75
1944 3.35 4.84 5.67 3.88 1.87 2.55 7.60 2.14 7.15 1.81 4.44 2.18 47.48
1945 1.85 4.41 1.55 2.66 2.90 2.49 10.58 4.39 9.59 2.19 1.38 5.46 49.45
1946 3.72 3.19 1.82 3.37 4.82 4.99 5.08 2.93 3.93 3.24 2.42 0.92 40.43
1947 5.75 1.29 2.51 2.15 1.76 6.13 3.10 2.51 3.66 5.45 6.89 0.95 42.15
1948 3.32 4.20 4.17 3.75 4.78 1.70 3.51 3.55 4.11 2.14 8.36 4.62 48.21
1949 2.72 2.77 1.81 2.79 4.15 4.62 4.08 4.83 c 2.33 2.75 2.70 1.65 37.20
1950 2.46 1.05 2.48 1.56 5.90 6.02 7.46 1.37 2.82 2.68 1.05 2.62 37.47
1951 1.74 1.93 2.71 4.66 1.33 5.16 3.29 2.64 1.26 1.55 2.29 4.87 33.43
1952 4.51 4.65 6.56 3.78 3.80 1.33 3.77 11.95 1.26 0.97 5.47 3.30 51.35
1953 4.60 4.35 6.62 3.80 1.73 4.30 2.46 1.44 5.50 0.58 1.57 5.50 42.45
1954 7.25 1.52 4.97 1.86 3.63 0.88 2.59 3.52 1.17 6.34 3.88 2.62 40.23
1955 1.79 5.44 2.17 2.71 2.13 1.68 5.70 8.13 4.02 3.45 2.19 0.52 39.93
1956 1.30 5.62 3.78 3.60 2.68 2.90 6.08 3.23 4.94 5.34 1.44 3.22 44.13
1957 3.06 6.00 2.90 1.99 3.52 8.56 2.00 7.70 6.21 1.29 5.55 3.48 a 52.26
1958 4.25 4.19 2.93 5.47 4.47 3.46 5.71 5.17 1.51 3.25 1.56 4.46 46.43
1959 1.91 3.77 3.05 6.72 1.25 4.36 14.48 4.42 3.90 5.43 3.44 2.97 55.70
1960 4.30 5.58 6.08 4.29 5.24 1.55 7.82 5.14 2.34 3.39 0.91 1.73 48.37
1961 3.32 5.21 4.95 2.52 4.62 5.93 3.52 6.45 0.33 1.25 2.25 4.88 45.23
1962 6.12 a 3.10 4.47 5.76 1.60 5.83 4.97 5.63 4.37 1.02 8.33 3.45 54.65
1963 2.50 3.87 4.18 2.35 2.66 4.86 7.70 2.07 5.29 0.53 7.46 2.72 46.19
1964 4.84 5.22 2.62 4.81 1.87 7.64 4.27 5.60 a 3.25 5.19 2.25 3.74 51.30
1965 2.15 3.94 4.24 2.53 3.42 10.93 7.63 2.84 1.59 2.38 1.14 0.57 43.36
1966 5.91 6.54 1.81 5.25 6.88 1.97 4.03 4.78 4.13 2.99 1.56 2.83 48.68
1967 1.84 4.58 1.58 2.53 5.45 4.26 3.99 8.84 3.76 2.16 2.02 4.48 45.49
1968 3.27 1.03 3.30 2.54 4.05 1.00 3.39 1.54 0.20 3.77 4.99 3.82 32.90
1969 2.59 3.79 4.50 2.71 2.52 6.46 4.00 6.16 5.37 2.97 0.76 4.22 46.05
1970 2.14 3.98 5.25 2.96 2.98 1.42 6.12 2.82 1.48 4.64 3.72 2.28 39.79
1971 3.53 4.84 5.21 4.52 6.92 3.93 4.62 6.48 6.59 9.39 2.54 1.58 60.15
1972 2.73 4.59 1.85 2.90 7.43 5.20 3.48 1.91 4.85 5.73 6.61 6.91 54.19
1973 3.10 4.87 4.99 5.98 4.04 7.10 2.84 7.29 1.92 0.85 0.95 6.57 50.50
1974 4.34 3.44 4.05 1.79 7.96 2.89 1.61 8.19 5.86 1.39 1.74 5.25 48.51
1975 7.26 3.85 7.65 1.55 5.64 2.39 8.65 1.13 11.70 1.23 3.06 3.60 57.71
1976 3.79 1.80 2.40 0.60 3.54 5.10 0.93 1.26 2.40 4.64 2.31 4.13 32.90
1977 2.98 2.23 5.83 1.73 3.61 2.16 1.22 4.13 5.93 5.05 3.58 4.35 42.80
1978 9.72 1.01 4.68 6.66 5.31 3.75 3.43 4.01 1.72 1.51 5.21 3.84 50.85
1979 5.97 8.23 2.68 3.72 4.97 5.01 4.09 1.63 8.21 2.68 7.18 0.98 55.35
1980 4.36 2.73 7.13 2.60 4.80 7.16 2.79 1.08 3.05 4.46 2.57 1.48 44.21
1981 0.97 2.45 2.93 1.79 4.85 3.79 6.88 7.26 3.63 4.74 0.63 3.95 43.87
1982 6.23 4.40 3.16 3.56 4.08 10.03 4.53 4.16 2.31 5.72 2.43 6.82 57.43
1983 2.12 5.24 9.39 4.38 7.70 2.01 0.74 2.50 1.32 5.44 5.30 7.68 53.82
1984 4.94 6.05 7.49 4.75 7.52 2.63 7.12 5.49 2.50 1.04 1.51 3.95 a 54.99
1985 4.97 5.90 1.14 0.60 5.68 2.65 8.55 7.95 0.27 3.42 13.52 1.02 55.67
1986 1.48 2.24 3.24 1.22 3.53 1.50 3.45 13.84 0.23 1.83 3.08 4.46 40.10
1987 5.34 3.80 3.97 7.29 1.11 2.26 2.89 3.10 7.09 2.79 1.21 3.53 44.38
1988 0.00 z 2.73 2.02 3.39 3.43 2.36 2.41 4.51 3.79 5.05 a 3.61 0.38 a 33.68
1989 1.07 5.36 6.78 3.50 3.61 6.58 7.51 4.74 4.14 4.50 2.80 3.23 53.82
1990 3.43 4.33 4.28 3.07 6.98 0.52 2.70 3.85 0.17 8.92 1.87 3.90 44.02
1991 4.99 1.19 5.96 2.63 3.02 2.47 5.37 2.46 5.82 1.97 1.11 2.34 39.33
1992 3.86 1.16 a 3.96 a 2.64 3.88 5.86 0.00 z 4.14 1.73 4.53 5.84 2.53 40.13
1993 0.00 z 2.97 a 9.09 a 4.35 5.17 0.75 2.00 4.26 2.91 3.39 2.88 3.85 41.62
1994 3.33 3.33 5.21 3.22 2.25 2.29 6.96 a 4.78 2.59 4.69 2.33 1.26 42.24
1995 4.66 4.72 3.77 0.95 5.19 9.04 3.64 2.67 1.30 7.35 4.50 2.19 49.98
1996 4.68 a 2.62 4.14 3.73 5.43 3.65 3.50 3.80 12.51 3.64 3.02 4.15 b 54.87
1997 3.61 2.90 1.44 c 4.33 1.77 3.70 3.95 0.72 a 3.03 c 1.63 c 3.77 b 2.57 a 33.42
1998 10.67 b 7.03 8.65 3.44 0.00 z 3.30 f 2.82 5.86 3.67 1.33 1.99 3.46 48.92
1999 6.27 2.25 3.55 5.22 0.74 4.64 2.42 4.16 16.53 2.34 c 2.34 a 1.76 52.22
2000 3.69 g 2.62 a 3.85 6.04 a 2.59 5.42 5.13 4.08 a 2.87 a 0.00 z 1.92 1.31 35.83
2001 3.25 b 2.69 a 6.19 2.79 3.00 5.42 6.36 3.56 3.72 a 1.39 0.40 1.12 b 39.89
2002 3.94 b 1.07 a 4.00 1.60 2.14 1.50 4.74 6.79 4.30 a 8.76 3.41 3.36 a 45.61
2003 3.23 5.80 a 7.67 5.50 4.85 4.72 6.15 7.97 5.42 a 2.72 1.89 3.82 59.74
2004 1.15 a 2.33 2.56 2.35 3.95 3.76 4.32 8.44 3.97 1.98 3.85 2.32 40.98
2005 4.07 2.21 a 3.91 5.10 2.04 3.88 a 2.60 a 3.12 1.46 3.82 6.23 4.22 42.66
2006 2.47 2.43 2.22 3.21 a 2.85 13.50 a 3.99 2.30 7.07 4.16 b 7.02 d 3.03 54.25
2007 2.64 c 2.15 4.57 4.50 2.96 3.80 2.97 1.76 0.90 5.35 1.60 4.32 b 37.52
2008 1.18 a 4.07 6.52 6.32 3.58 c 5.11 4.81 7.58 a 2.84 a 0.12 3.91 4.92 50.96
2009 2.15 a 2.86 4.81 a 0.90 3.97 7.50 2.80 6.10 4.72 2.12 8.98 8.30 55.21
2010 2.00 a 4.25 b 1.75 a 1.30 8.90 b 4.46 4.57 3.65 b 6.27 l 2.25 k 1.34 0.85 j 32.22
2011 0.21 i 3.01 d 4.60 d 3.16 b 5.51 c 4.36 4.64 d 3.70 f 5.87 c 2.43 f 5.32 e 1.47 g 36.47
2012 1.03 j 2.55 n 4.13 s 2.95 i 0.90 w 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00
Period of Record Statistics
MEAN 3.55 3.41 4.05 3.38 3.74 4.20 4.62 4.53 3.61 3.09 3.02 3.26 44.26
S.D. 1.78 1.59 1.94 1.49 1.84 2.31 2.33 2.70 2.82 1.99 2.27 1.58 7.90
SKEW 1.21 0.49 0.75 0.46 0.50 1.05 1.19 1.10 1.65 0.89 1.58 0.55 -0.26
MAX 10.67 8.23 9.55 7.29 8.90 13.50 14.48 14.07 16.53 9.39 13.52 8.30 60.15
MIN 0.97 0.73 1.14 0.60 0.22 0.52 0.33 0.66 0.03 0.12 0.11 0.38 22.74
NO YRS 100 104 105 105 104 103 102 102 103 101 104 102 96