LEWES, DELAWARE

Monthly Average Minimum Temperature (Degrees Fahrenheit)

(075320)

File last updated on May 16,
*** Note *** Provisional Data *** After Year/Month 201110
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
1945 ----- z 27.21 40.77 45.33 51.29 62.80 67.23 62.65 63.33 45.81 40.77 25.19 48.40
1946 28.00 28.64 40.52 40.77 52.97 59.10 64.06 61.87 58.67 49.42 40.27 28.45 46.06
1947 32.16 21.25 27.81 42.36 b 51.74 58.17 64.42 67.45 62.83 53.87 a 35.33 26.33 a 45.31
1948 ----- z ----- z ----- z ----- z ----- z ----- z ----- z 64.10 b 56.73 46.48 42.23 31.13 48.14
1949 34.61 33.32 35.16 41.90 52.55 63.13 70.39 66.35 56.81 c 53.87 a 36.40 29.94 47.87
1950 38.00 29.64 31.40 a 39.43 50.58 59.80 65.75 k 61.72 b 57.00 50.42 36.73 26.70 a 43.77
1951 28.52 27.64 33.87 41.60 50.39 61.73 66.45 64.71 58.10 50.16 34.23 30.13 45.63
1952 29.68 30.07 32.68 44.40 51.10 62.90 67.65 64.87 56.40 42.29 36.60 29.68 45.69
1953 33.23 29.71 35.45 42.50 55.29 60.90 65.06 64.19 56.60 45.54 e 35.03 31.19 46.23
1954 26.84 31.89 33.39 45.37 51.06 61.00 a 63.84 62.40 a 59.27 d 51.23 36.37 28.94 45.97
1955 25.58 25.79 35.32 44.63 53.39 58.17 70.74 69.61 60.03 47.61 34.60 23.94 45.78
1956 25.81 31.62 31.97 40.23 49.74 61.67 65.77 64.06 56.97 51.61 38.69 a 37.61 46.31
1957 24.74 32.25 34.65 45.13 53.65 65.20 63.65 63.10 a 63.10 45.77 40.10 33.06 47.03
1958 24.42 22.18 32.35 43.73 51.94 58.93 68.81 64.71 55.30 48.03 38.90 19.94 44.10
1959 23.65 28.14 34.52 45.33 55.68 61.77 68.26 68.29 61.17 53.13 a 38.40 33.32 47.64
1960 30.61 30.55 25.71 46.53 52.48 62.83 64.55 68.65 e 60.21 a 47.23 38.43 22.55 45.86
1961 19.48 30.50 36.39 40.43 50.23 60.57 67.26 65.03 64.36 b 47.84 40.97 29.35 46.03
1962 27.16 27.86 33.81 45.33 54.77 62.53 63.65 63.77 56.40 48.16 37.63 27.03 45.68
1963 24.39 21.89 37.52 44.30 50.61 61.30 66.03 62.16 55.57 47.29 41.13 23.94 44.68
1964 27.19 26.93 35.19 40.73 53.06 58.57 66.10 59.87 57.47 44.68 37.50 32.58 44.99
1965 22.58 26.39 30.81 38.80 52.13 59.47 64.26 64.71 61.63 45.29 39.07 31.26 44.70
1966 24.52 27.21 33.97 39.60 50.13 60.83 65.23 64.71 57.43 45.74 38.50 29.77 44.80
1967 30.48 ----- z 32.16 42.47 47.77 59.80 66.94 65.77 56.20 44.90 33.20 29.94 46.33
1968 22.87 21.86 35.10 42.60 50.32 61.57 66.94 65.65 57.03 49.68 41.73 27.23 45.21
1969 25.10 28.36 31.16 43.93 52.45 63.87 67.68 65.10 58.67 46.97 37.50 28.03 45.73
1970 19.58 27.18 31.39 42.37 53.13 62.00 66.48 65.58 61.47 52.35 41.00 29.90 46.04
1971 23.29 28.96 32.58 39.23 50.81 62.67 64.97 64.65 63.10 56.77 37.97 36.94 46.83
1972 30.06 26.76 34.61 39.40 53.10 59.90 67.68 63.68 60.07 45.48 39.03 36.74 46.38
1973 27.97 ----- z 39.71 44.57 53.00 65.97 66.29 67.19 61.13 48.45 39.47 32.39 49.65
1974 32.84 27.04 36.45 45.10 52.37 a 60.67 65.42 66.42 59.50 43.77 38.13 32.52 46.69
1975 30.68 30.79 34.10 38.90 54.77 62.63 66.03 66.48 59.20 51.81 42.37 30.71 47.37
1976 23.35 33.21 36.58 43.83 52.42 63.23 64.68 63.90 56.93 45.19 30.87 24.29 44.87
1977 14.65 26.71 39.45 45.23 52.47 a 58.60 66.65 66.84 62.53 47.16 43.07 29.06 46.04
1978 24.16 17.54 31.71 42.23 50.90 61.23 64.74 69.32 58.33 45.13 42.67 29.81 44.81
1979 26.48 18.68 35.81 42.97 55.03 58.27 65.81 66.10 61.07 45.94 42.50 32.42 45.92
1980 27.97 23.03 32.94 45.47 o 54.77 ----- z ----- z ----- z ----- z ----- z ----- z ----- z 34.68
1981 22.81 30.41 a 32.32 ----- z 52.87 64.00 66.71 61.39 56.25 b 43.93 d 38.52 a 29.94 45.38
1982 20.06 30.82 34.65 41.07 53.35 59.60 68.16 64.10 59.30 50.32 42.60 40.97 47.08
1983 31.52 30.32 ----- z 43.43 53.68 62.80 68.32 69.32 62.40 52.81 41.77 30.61 49.73
1984 24.13 34.14 31.77 43.23 52.77 60.43 64.77 a 68.03 59.27 55.52 39.00 37.39 47.54
1985 22.90 29.71 38.00 a 45.63 55.71 62.13 67.03 67.19 61.10 53.97 49.77 28.16 48.44
1986 27.20 a 29.86 36.39 43.13 55.48 63.97 70.55 65.39 61.30 53.61 41.23 34.81 48.58
1987 28.42 26.71 36.74 43.33 54.32 64.93 70.45 67.74 63.60 45.45 42.37 34.29 48.20
1988 24.74 29.86 36.97 43.13 53.29 62.70 69.58 70.35 59.53 44.48 40.83 29.13 47.05
1989 32.13 29.86 36.45 45.67 54.00 a 67.87 68.94 69.45 64.47 50.65 40.63 21.65 48.48
1990 35.97 35.46 39.71 45.60 54.32 63.57 70.26 68.52 60.60 54.32 43.53 38.23 50.84
1991 32.00 33.93 40.39 48.13 60.23 64.80 70.84 70.29 60.37 50.65 42.37 35.42 50.78
1992 31.19 32.86 35.29 43.03 51.03 60.13 69.26 65.03 63.07 47.87 43.03 34.32 48.01
1993 34.71 26.32 33.35 43.77 56.00 64.00 71.58 67.74 62.33 49.74 40.53 32.77 48.57
1994 23.94 28.36 36.29 49.00 50.29 66.77 71.48 65.19 60.87 50.03 46.70 37.68 48.88
1995 34.65 27.54 38.13 44.87 54.71 64.13 71.03 69.74 63.33 53.81 38.33 28.90 49.10
1996 28.48 29.07 33.26 46.40 53.68 66.57 69.00 67.68 63.67 51.84 38.27 40.00 48.99
1997 32.06 38.61 42.35 48.23 54.39 64.40 71.68 68.29 64.47 51.55 41.87 34.87 51.06
1998 37.32 36.96 40.10 47.80 ----- z 63.83 69.29 68.90 65.40 52.71 41.63 37.81 51.07
1999 32.32 33.71 35.42 45.20 55.97 65.07 71.77 70.39 64.10 50.68 45.73 34.87 50.44
2000 27.90 32.76 41.45 45.53 57.84 66.13 67.77 68.23 61.80 51.06 39.47 26.94 48.91
2001 27.87 32.93 35.13 46.73 55.65 66.50 66.06 70.39 61.33 50.10 44.69 a 40.19 49.80
2002 35.16 34.75 39.39 49.93 54.90 65.90 69.97 70.45 64.60 55.23 41.47 31.84 51.13
2003 24.90 28.29 36.55 44.47 52.13 64.10 70.26 70.39 64.40 49.71 45.23 33.39 48.65
2004 24.16 30.79 39.23 46.77 62.16 64.70 70.10 68.48 64.27 50.97 43.67 34.06 49.95
2005 29.87 31.18 34.26 46.40 50.81 66.43 72.00 71.77 65.27 53.87 43.83 30.13 49.65
2006 36.87 31.50 36.90 48.43 55.19 65.13 71.77 71.61 61.07 49.81 46.40 39.23 51.16
2007 35.61 24.68 37.55 43.50 55.26 66.30 69.23 70.26 64.13 58.61 41.87 35.71 50.23
2008 32.16 32.55 39.42 47.97 53.29 67.43 70.23 66.61 64.67 50.39 41.10 35.29 50.09
2009 25.97 32.43 36.48 46.90 56.29 63.90 68.03 71.06 63.93 51.00 a 45.47 33.00 a 49.54
2010 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
2011 ----- z ----- z ----- z ----- z 69.25 z 67.61 l 70.14 j 70.62 r 63.90 j 43.00 z ----- z ----- z 9999.00
Period of Record Statistics
MEAN 28.06 29.15 35.41 44.01 53.30 62.70 67.74 66.56 60.65 49.53 40.30 31.46 47.45
S.D. 4.91 4.11 3.27 2.67 2.46 2.57 2.46 2.85 2.90 3.58 3.45 4.68 2.01
SKEW -0.03 -0.53 -0.20 -0.08 0.87 0.00 0.08 -0.10 -0.15 0.17 -0.06 -0.12 0.31
MAX 38.00 38.61 42.35 49.93 62.16 67.87 72.00 71.77 65.40 58.61 49.77 40.97 51.16
MIN 14.65 17.54 25.71 38.80 47.77 58.17 63.65 59.87 55.30 42.29 30.87 19.94 44.10
NO YRS 63 62 63 62 63 63 62 64 64 64 64 64 56