WILMINGTON WSO ARPT, DELAWARE

Monthly Average Minimum Temperature (Degrees Fahrenheit)

(079595)

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
1948 ----- z ----- z ----- z ----- z ----- z ----- z ----- z 63.42 55.37 44.39 39.90 27.77 46.17
1949 31.48 29.36 33.19 41.60 51.74 62.20 68.97 64.55 53.87 50.87 34.40 28.06 45.86
1950 32.81 26.32 27.61 37.17 50.48 58.03 63.20 a 62.03 54.83 47.00 34.13 23.81 43.12
1951 24.39 25.32 31.94 40.07 50.10 60.53 65.48 63.06 55.67 49.55 32.00 28.68 43.90
1952 28.97 29.41 32.19 45.20 50.71 62.07 a 67.29 64.77 55.70 39.61 36.50 30.32 45.23
1953 30.19 29.29 36.52 42.77 55.45 61.37 65.55 62.87 56.70 46.00 34.60 29.35 45.89
1954 22.45 30.39 32.16 43.73 50.29 60.43 63.87 63.42 58.59 a 49.52 34.87 27.61 44.78
1955 24.35 24.21 33.71 44.63 53.06 58.80 70.87 68.84 57.40 47.10 33.67 21.61 44.86
1956 25.10 29.45 30.19 39.43 47.87 61.03 64.42 63.74 55.07 47.19 35.77 33.00 44.36
1957 20.94 29.71 33.87 43.43 51.58 64.33 64.03 61.97 59.77 43.48 37.97 30.29 45.11
1958 23.77 20.21 31.87 43.77 51.00 57.31 a 68.29 64.29 54.83 45.84 36.63 19.77 43.13
1959 21.00 23.79 30.61 43.23 54.29 61.07 66.65 67.32 60.57 50.61 35.37 29.87 45.36
1960 28.42 27.86 24.77 44.33 50.32 60.90 63.29 66.29 59.30 45.19 35.13 18.61 43.70
1961 16.71 26.36 33.94 39.00 48.84 60.27 66.39 65.19 62.80 45.71 37.87 25.23 44.02
1962 22.61 23.96 31.23 41.70 53.26 62.23 62.10 63.06 53.40 46.32 33.67 22.10 42.97
1963 20.26 18.64 34.39 40.83 48.35 59.83 65.16 61.94 53.87 45.65 39.03 20.77 42.39
1964 24.03 24.03 32.65 40.13 52.48 61.03 67.00 61.45 56.23 41.26 36.03 29.58 43.83
1965 20.42 23.82 29.81 39.70 54.84 59.67 65.29 63.45 59.87 42.32 35.70 28.52 43.62
1966 21.97 23.46 32.74 38.80 50.06 61.03 66.00 64.29 56.03 42.39 36.67 26.77 43.35
1967 28.13 20.43 30.71 40.50 45.77 60.73 66.29 65.00 54.57 43.74 32.03 28.94 43.07
1968 19.68 20.79 34.45 42.60 50.13 61.17 67.74 67.26 58.53 49.55 39.20 26.74 44.82
1969 23.77 27.36 30.77 44.57 53.61 64.87 68.29 66.35 58.70 44.42 35.30 25.97 45.33
1970 16.58 24.39 30.74 41.67 53.58 62.13 68.32 67.06 61.80 51.39 40.20 28.61 45.54
1971 19.32 27.54 31.94 38.60 50.42 63.93 65.81 64.65 63.90 55.03 37.03 33.77 45.99
1972 28.10 23.76 32.16 38.87 52.00 59.70 68.58 65.90 60.10 43.42 37.27 35.32 45.43
1973 26.84 26.57 40.52 45.53 52.52 67.70 69.45 69.97 60.43 49.26 39.83 29.48 48.18
1974 28.65 24.43 34.84 43.70 51.97 61.70 66.42 67.26 57.17 41.77 37.13 30.39 45.45
1975 29.45 28.14 31.58 37.63 55.55 62.90 66.97 67.32 56.53 50.19 40.73 27.71 46.23
1976 19.55 30.52 36.74 42.97 49.97 62.83 65.23 64.03 56.37 43.68 30.70 22.71 43.77
1977 12.74 23.79 36.94 42.83 52.74 59.10 66.42 66.68 61.07 44.00 39.93 25.35 44.30
1978 19.61 13.86 29.16 39.33 51.06 60.13 64.35 69.00 56.40 41.97 37.90 27.55 42.53
1979 23.16 14.43 33.90 40.83 54.26 58.17 66.29 66.19 59.13 45.55 39.73 29.00 44.22
1980 24.77 20.62 30.71 44.47 54.06 57.70 67.61 68.55 60.53 44.84 34.03 24.29 44.35
1981 16.94 27.93 30.42 44.33 51.42 62.83 67.77 63.97 57.37 41.97 35.97 26.84 43.98
1982 15.77 25.89 32.42 38.67 54.19 60.77 67.74 61.48 57.80 45.06 37.23 32.55 44.13
1983 27.00 26.04 37.26 43.30 50.19 61.03 66.29 66.48 57.20 47.06 36.50 23.42 45.15
1984 15.97 30.07 27.19 40.67 51.06 63.20 66.06 66.32 52.33 52.00 32.63 33.23 44.23
1985 19.13 28.21 36.29 45.27 55.00 60.63 66.65 65.87 58.93 48.84 43.80 24.19 46.07
1986 23.29 25.61 32.00 42.70 54.58 61.37 67.77 63.42 58.27 47.87 35.33 29.74 45.16
1987 24.74 23.86 33.71 43.00 52.77 63.53 69.42 65.00 59.67 40.19 37.63 30.65 45.35
1988 18.84 26.38 33.74 41.93 53.45 60.07 69.52 68.58 56.17 40.48 36.67 25.87 44.31
1989 28.03 26.89 32.87 40.77 52.61 66.10 67.52 66.39 59.10 46.42 35.63 17.48 44.98
1990 31.94 30.75 35.77 43.53 52.29 62.10 68.74 65.87 56.97 49.48 37.50 31.32 47.19
1991 25.48 30.25 35.87 44.87 57.45 62.50 68.81 67.26 57.10 47.03 37.93 30.87 47.12
1992 26.45 28.69 33.16 42.03 50.26 59.47 67.55 62.84 58.70 42.58 39.37 31.03 45.18
1993 30.03 21.93 31.10 42.37 54.58 62.37 70.00 67.90 59.23 45.94 36.87 28.61 45.91
1994 18.90 23.00 33.35 47.10 48.48 65.50 71.06 63.97 57.40 42.29 40.00 31.19 45.19
1995 29.61 21.96 34.84 40.43 51.68 62.70 68.97 66.81 58.33 48.32 32.87 24.68 45.10
1996 22.42 25.62 29.29 42.50 50.65 63.67 66.26 65.42 59.03 45.35 31.57 32.48 44.52
1997 24.19 30.25 33.39 40.07 48.29 59.00 65.19 63.32 55.30 44.94 36.17 29.71 44.15
1998 32.32 33.36 36.16 43.97 55.90 61.47 65.39 65.74 60.60 47.32 36.40 32.55 47.60
1999 26.55 27.75 32.35 42.43 52.03 62.30 68.97 66.45 59.93 43.52 40.37 30.81 46.12
2000 23.45 28.28 36.48 42.40 54.29 62.83 64.77 64.55 55.77 45.26 35.47 22.65 44.68
2001 24.19 27.64 31.71 42.80 52.74 63.53 63.26 68.23 55.50 44.90 39.07 33.77 45.61
2002 29.58 29.18 34.71 44.93 50.71 62.03 67.55 67.61 59.13 47.61 35.00 26.94 46.25
2003 21.87 22.00 32.81 41.23 50.29 60.70 67.06 68.42 60.13 44.26 40.37 28.10 44.77
2004 18.94 24.93 35.84 44.17 59.19 60.87 66.84 64.94 59.77 45.90 38.03 28.19 45.63
2005 24.58 26.64 29.94 42.83 46.77 64.03 68.35 68.94 60.27 49.29 37.03 26.26 45.41
2006 30.84 26.46 34.19 44.47 51.52 62.63 69.16 67.29 57.00 45.13 41.70 32.32 46.89
2007 30.19 21.11 33.06 40.93 53.16 63.57 66.71 67.39 59.10 53.45 36.53 30.84 46.34
2008 27.74 27.41 34.35 44.77 49.32 64.83 67.94 62.87 60.47 44.84 37.80 30.39 46.06
2009 21.55 26.86 33.26 44.47 53.81 62.10 63.58 68.35 58.33 46.65 41.77 28.23 45.75
2010 24.84 24.79 38.35 45.07 55.74 66.33 69.65 67.77 59.97 47.03 37.00 24.52 46.75
2011 21.61 26.32 33.03 46.37 56.45 63.83 70.35 65.90 62.20 46.84 39.33 31.87 47.01
2012 28.45 31.00 41.39 41.93 a 54.22 v ----- z ----- z ----- z ----- z ----- z ----- z ----- z 35.69
Period of Record Statistics
MEAN 24.15 25.77 33.11 42.34 52.12 61.79 66.93 65.57 58.00 46.04 36.88 27.95 45.04
S.D. 4.67 3.76 2.90 2.24 2.57 2.11 2.03 2.14 2.41 3.20 2.66 3.87 1.25
SKEW -0.14 -0.86 0.16 -0.28 0.11 0.29 -0.18 -0.09 -0.06 0.39 0.00 -0.62 0.13
MAX 32.81 33.36 41.39 47.10 59.19 67.70 71.06 69.97 63.90 55.03 43.80 35.32 48.18
MIN 12.74 13.86 24.77 37.17 45.77 57.31 62.10 61.45 52.33 39.61 30.70 17.48 42.39
NO YRS 64 64 64 64 63 63 63 64 64 64 64 64 63