DURHAM, NORTH CAROLINA

Monthly Average Minimum Temperature (Degrees Fahrenheit)

(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 ----- z ----- z 44.16 48.40 62.45 ----- z ----- z ----- z ----- z ----- z ----- z ----- z 51.67
1900 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1901 31.77 29.00 39.32 42.63 57.37 a 65.07 ----- z ----- z ----- z ----- z ----- z ----- z 44.19
1902 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1903 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1904 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1905 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1906 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1907 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1908 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1909 ----- z ----- z ----- z ----- z ----- z ----- z 66.00 z ----- z ----- z ----- z ----- z ----- z 9999.00
1910 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1911 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1912 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1913 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1914 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1915 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1916 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1917 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1918 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1919 ----- z ----- z 38.83 g 43.50 55.71 62.27 65.13 a 63.39 54.77 55.13 37.00 27.10 51.55
1920 23.52 ----- z 39.67 z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 23.52
1921 ----- z ----- z 47.15 k 47.80 53.65 63.70 68.68 64.61 65.63 42.68 40.23 29.77 i 55.87
1922 28.29 33.70 a 38.55 47.68 b 56.10 65.43 67.77 63.10 a 58.67 46.39 34.19 c 32.90 47.73
1923 30.13 28.07 36.24 b 41.70 52.77 a 64.63 66.03 66.32 61.03 45.54 g 35.57 34.32 46.98
1924 23.90 a 27.43 a 33.58 41.93 a 52.29 63.40 66.71 64.97 56.47 44.13 34.97 29.87 44.97
1925 28.00 32.93 36.29 46.90 a 50.77 a 65.70 65.90 62.68 64.67 46.19 34.43 29.32 46.98
1926 25.57 a 34.43 31.58 43.50 51.65 62.17 68.90 68.94 63.90 50.19 34.27 33.23 47.36
1927 30.71 39.50 38.68 45.53 55.97 61.77 66.45 64.06 60.63 49.68 41.87 32.48 48.94
1928 28.84 31.38 37.86 c 43.87 52.62 b 63.52 a 69.41 d 68.84 57.00 53.21 b 39.07 31.03 48.05
1929 30.90 30.00 a 43.19 49.10 55.87 62.40 66.42 65.55 61.40 46.61 43.73 31.74 48.91
1930 32.55 33.29 36.03 45.23 56.94 61.90 68.97 62.32 65.33 45.13 37.83 28.16 47.81
1931 28.87 31.11 34.87 44.50 53.74 63.13 70.61 66.32 63.33 47.67 a 41.70 39.65 48.79
1932 40.81 38.52 34.35 44.63 54.58 65.00 68.23 65.65 60.57 50.48 35.74 c 34.35 49.41
1933 37.42 33.75 38.00 45.72 a 59.84 64.00 66.39 67.84 64.40 47.71 35.20 36.55 49.73
1934 33.39 23.61 35.16 47.03 55.48 67.32 b 71.19 70.28 b 64.37 46.06 39.40 31.68 48.75
1935 31.03 31.89 44.03 46.13 53.74 62.77 69.03 66.13 59.93 47.06 42.83 24.58 48.26
1936 25.42 25.76 40.45 43.00 53.87 62.00 67.45 67.71 60.37 c 50.52 36.40 33.45 47.20
1937 41.55 ----- z 35.28 b 42.69 n ----- z 65.42 r 65.68 66.52 56.17 46.00 34.13 29.52 46.85
1938 29.39 35.89 41.74 45.00 55.32 60.57 65.26 65.55 57.93 43.35 37.27 29.19 47.21
1939 30.77 36.11 39.58 44.67 54.39 66.83 65.61 66.48 60.07 47.65 32.73 29.71 47.88
1940 18.60 a 29.45 32.77 41.87 51.90 63.37 62.84 64.94 53.90 42.26 34.73 31.90 44.04
1941 26.35 25.46 31.16 48.00 53.55 64.03 69.87 65.35 59.77 52.68 33.90 32.19 46.86
1942 25.35 27.07 37.71 43.40 55.90 63.90 66.77 64.29 60.17 50.13 39.87 31.55 47.18
1943 32.71 31.39 36.77 45.03 58.74 68.60 68.90 65.32 55.13 44.61 34.10 29.16 47.54
1944 28.97 34.28 34.71 45.13 57.68 64.63 64.77 63.65 62.37 45.68 37.80 25.87 47.13
1945 30.03 33.64 48.26 50.70 52.52 63.80 67.26 64.19 63.27 44.74 36.83 26.81 48.50
1946 32.32 32.04 43.77 46.37 55.00 62.67 65.32 63.32 60.20 47.19 e 39.62 v 33.87 49.28
1947 36.70 a 23.71 30.32 49.00 55.00 61.33 62.40 a 66.58 59.87 51.70 a 36.57 25.45 46.55
1948 24.23 31.14 42.61 47.07 55.43 a 63.33 67.84 62.81 58.23 44.48 43.63 34.84 47.97
1949 39.65 39.00 38.55 b 44.57 54.68 64.80 70.03 66.71 58.03 51.03 34.27 32.07 b 49.45
1950 40.94 34.32 36.66 b 42.80 57.26 62.57 66.23 63.81 58.90 50.47 a 31.50 24.93 a 47.53
1951 28.10 28.79 36.87 44.27 52.65 60.33 f 67.65 70.00 a 58.10 50.55 35.27 32.58 45.89
1952 36.16 33.14 36.26 47.00 b 56.00 67.57 66.84 64.67 a 56.17 39.52 34.13 28.68 47.18
1953 35.00 a 34.79 38.58 44.93 58.55 61.43 66.77 67.54 g 57.90 48.20 a 35.77 32.55 46.77
1954 30.23 34.21 37.94 50.77 51.58 61.53 65.61 65.06 59.27 48.55 35.97 28.19 47.41
1955 29.65 30.89 40.81 50.10 56.13 57.17 69.65 68.32 63.50 46.45 35.20 26.26 47.84
1956 28.55 35.03 37.19 43.93 55.87 62.83 67.35 65.39 57.80 53.35 37.23 38.13 48.56
1957 31.81 36.96 38.32 49.17 a 57.45 64.87 65.10 a 62.94 61.80 43.74 38.67 32.67 a 48.62
1958 25.81 25.04 35.32 46.70 57.19 62.69 a 69.45 66.52 56.57 46.74 41.27 24.90 46.52
1959 27.55 33.75 34.65 47.60 59.03 62.37 68.39 68.27 a 59.80 52.71 37.73 31.23 48.59
1960 32.19 30.24 27.19 47.73 52.61 62.87 65.39 67.84 59.83 49.61 36.67 23.39 46.30
1961 23.42 32.68 40.71 41.07 52.23 61.30 65.19 65.71 61.17 43.90 40.90 29.52 46.48
1962 28.83 a 33.54 33.58 43.33 57.55 60.73 63.06 62.61 55.30 48.84 37.20 28.97 a 46.13
1963 26.81 24.18 40.19 48.60 56.35 62.07 64.00 c 65.32 57.30 45.45 38.43 23.40 a 46.01
1964 28.26 28.41 38.93 b 49.30 55.45 64.10 65.35 64.81 56.67 42.29 38.97 33.77 a 47.19
1965 27.27 a 31.54 35.52 47.93 59.39 61.77 66.61 66.45 61.60 44.87 39.13 30.68 47.73
1966 26.26 30.75 35.58 43.73 55.03 60.20 66.00 66.65 57.93 44.58 36.77 29.97 46.12
1967 32.10 26.50 38.32 47.33 50.60 a 59.70 65.32 64.03 53.47 44.37 a 32.53 33.58 45.65
1968 24.23 21.72 35.87 43.90 51.00 60.77 64.84 65.26 54.00 47.45 35.70 25.81 44.21
1969 25.06 28.11 29.84 45.93 50.97 a 62.23 65.16 62.00 54.97 46.35 32.17 26.48 44.11
1970 20.90 a 24.93 33.84 46.67 56.36 c 62.37 66.06 65.77 61.93 47.42 36.24 a 31.48 46.16
1971 27.74 27.96 32.87 40.55 a 51.65 63.90 66.35 65.48 b 61.73 55.61 36.50 38.60 a 47.41
1972 32.23 28.00 35.48 43.03 52.29 57.41 a 65.35 63.16 56.57 43.48 35.07 a 33.90 45.50
1973 26.97 25.11 41.65 44.33 50.84 64.67 65.94 65.55 59.83 45.58 37.35 d 29.39 46.43
1974 38.68 29.79 39.19 43.10 54.45 59.77 64.58 65.81 57.53 40.10 34.77 30.45 46.52
1975 28.58 31.86 32.74 40.83 56.26 61.20 65.10 65.90 59.03 47.45 36.73 27.42 46.09
1976 23.48 31.83 36.90 41.40 50.42 60.50 63.45 61.35 50.93 38.65 27.50 23.16 42.47
1977 17.06 21.54 37.00 44.17 52.32 58.33 64.55 63.81 60.00 45.10 41.57 28.39 44.49
1978 23.42 22.82 33.87 44.67 52.61 63.57 65.03 66.00 60.93 43.47 a 41.33 28.97 45.56
1979 24.87 22.86 34.94 47.03 52.81 58.77 64.06 62.48 57.80 42.39 37.97 28.94 44.58
1980 29.00 20.97 32.00 44.00 52.61 57.63 64.03 63.29 59.43 42.23 30.67 26.10 43.50
1981 18.45 23.96 28.10 42.17 47.45 63.70 65.45 59.06 52.14 b 41.52 34.93 27.19 42.01
1982 23.32 32.21 36.29 42.37 55.84 64.30 68.29 64.42 57.63 47.19 38.57 39.69 r 48.22
1983 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1984 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1985 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
1986 ----- z ----- z ----- z ----- z ----- z ----- z ----- z 67.90 60.50 51.03 43.53 30.97 50.79
1987 27.84 ----- z ----- z 48.97 ----- z 67.20 ----- z 68.42 61.10 37.90 35.70 29.68 47.10
1988 ----- z ----- z ----- z ----- z 50.74 57.00 64.00 64.81 54.23 36.45 31.87 23.65 47.84
1989 25.97 24.82 32.97 39.23 47.42 59.73 59.82 t ----- z ----- z ----- z ----- z ----- z 38.36
1990 ----- z ----- z ----- z ----- z 56.32 63.80 70.58 69.19 60.07 50.74 38.13 36.16 55.62
1991 30.97 33.36 41.29 50.23 62.39 66.37 72.90 69.45 60.47 47.52 36.03 33.90 50.41
1992 31.06 33.76 37.55 46.40 51.97 63.37 ----- z 65.13 63.53 46.23 42.23 31.71 46.63
1993 ----- z 27.75 36.16 43.17 58.20 a 65.47 73.32 69.16 63.67 46.61 38.63 29.68 50.17
1994 24.39 31.11 38.19 48.67 52.32 68.13 71.97 66.74 58.53 46.48 42.33 37.39 48.85
1995 31.03 28.43 40.19 46.73 57.06 65.83 71.61 71.13 61.57 49.00 35.07 27.61 48.77
1996 27.06 30.76 33.81 46.83 56.84 66.53 69.26 67.84 61.47 48.35 34.27 33.65 48.06
1997 29.29 34.61 42.39 43.83 52.48 62.03 70.87 64.55 57.19 i 46.10 36.37 31.71 46.75
1998 34.84 f 31.36 36.06 44.90 ----- z 65.30 67.61 65.13 61.47 48.23 37.37 35.87 49.33
1999 31.29 30.93 a 33.57 a 47.03 52.04 c 62.67 69.29 67.53 a 57.21 b 44.48 j 41.10 a 29.37 a 47.46
2000 25.26 d 31.54 e 40.24 b 43.55 a 55.47 a 64.67 65.61 64.33 a 58.62 a ----- z 34.45 a 24.00 a 46.16
2001 26.46 c 30.48 c 33.97 45.87 53.19 65.28 a 64.68 66.23 55.50 42.73 a 37.27 34.87 46.38
2002 29.42 30.61 37.00 49.77 53.52 62.97 68.87 66.35 62.67 52.16 36.13 28.94 48.20
2003 25.06 29.11 37.74 43.73 53.84 62.10 67.84 68.45 59.37 46.29 41.43 27.94 46.91
2004 23.81 28.10 37.81 44.70 60.06 63.77 67.48 64.16 60.07 50.45 40.77 28.10 47.44
2005 30.97 30.79 32.23 44.03 51.71 62.70 70.61 68.45 62.40 50.10 36.03 27.10 47.26
2006 32.10 28.79 35.23 45.37 48.87 63.60 67.23 68.94 57.23 43.73 a 37.13 30.13 46.53
2007 30.35 23.75 33.63 a 42.00 53.77 63.10 65.10 67.10 59.83 49.58 36.93 32.59 b 46.48
2008 26.93 a 30.86 35.00 46.80 53.16 65.10 65.90 64.94 59.30 46.00 34.10 32.42 l 48.01
2009 24.94 27.50 35.35 45.07 57.48 64.57 65.19 68.81 57.70 46.94 39.70 29.74 46.92
2010 24.52 26.36 36.13 44.50 57.81 68.27 68.42 68.74 61.28 l 50.05 k 36.37 23.68 i 47.90
2011 24.91 h 31.12 c 36.83 h 47.54 b 56.79 c 66.63 69.81 d 67.31 e 62.67 c 45.56 f 37.24 e 32.48 f 54.89
2012 30.95 j 29.67 n 39.08 s 45.57 i 60.62 w ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
Period of Record Statistics
MEAN 28.79 30.09 36.73 45.39 54.57 63.16 67.01 65.78 59.35 46.76 37.02 30.32 46.99
S.D. 4.84 4.15 3.70 2.55 2.96 2.48 2.37 2.24 3.05 3.76 3.12 3.70 1.67
SKEW 0.44 -0.16 0.23 0.09 0.16 -0.24 0.52 -0.03 -0.28 -0.16 0.07 0.17 -0.77
MAX 41.55 39.50 48.26 50.77 62.45 68.60 73.32 71.13 65.63 55.61 43.73 39.65 50.41
MIN 17.06 20.97 27.19 39.23 47.42 57.00 62.40 59.06 50.93 36.45 27.50 23.16 42.01
NO YRS 83 83 84 87 87 87 85 87 86 83 87 83 67