LEWES, DELAWARE

Monthly Average 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 36.62 52.85 a 55.53 61.40 72.62 75.19 72.37 71.70 57.11 50.75 32.40 58.05
1946 36.95 38.38 49.97 51.03 62.21 68.57 72.02 69.94 67.47 59.16 50.00 39.71 55.45
1947 41.66 30.95 36.66 52.71 b 61.82 67.05 73.13 75.47 69.95 62.92 a 44.62 35.02 c 54.33
1948 ----- z ----- z ----- z ----- z ----- z ----- z ----- z 73.28 b 66.85 55.27 52.48 40.08 a 57.59
1949 43.11 42.57 44.98 52.43 62.69 72.28 78.85 75.40 65.96 d 62.60 a 47.23 40.66 57.40
1950 48.24 37.23 41.30 a 49.87 59.05 70.05 74.45 k 71.31 b 64.98 59.56 48.25 36.08 a 53.27
1951 39.08 38.39 42.82 52.58 61.52 70.42 75.00 73.56 68.03 59.52 44.90 40.82 55.55
1952 39.50 38.48 42.03 54.35 61.08 73.15 77.61 74.05 67.28 54.16 46.95 38.69 55.61
1953 41.34 39.89 45.37 53.17 64.81 70.98 75.31 73.82 67.77 57.60 e 47.02 41.40 56.54
1954 36.06 42.14 44.00 56.83 60.84 71.10 a 74.81 72.48 a 69.13 d 61.68 45.78 37.87 56.06
1955 34.12 a 36.52 45.92 55.10 63.71 67.70 79.79 77.52 68.43 58.92 46.20 32.56 55.54
1956 32.32 40.10 41.26 50.22 60.95 71.28 74.24 74.27 66.65 59.32 48.43 b 46.56 55.47
1957 32.68 40.20 43.02 57.25 63.87 74.22 75.13 72.70 a 71.45 55.11 49.53 41.84 56.42
1958 32.87 30.64 39.73 53.47 61.34 68.30 77.71 72.92 66.20 57.06 49.57 29.52 53.28
1959 33.84 37.32 44.47 54.87 66.13 71.88 75.92 76.48 69.98 61.93 a 46.95 41.21 56.75
1960 37.29 38.71 33.90 57.42 61.44 71.67 73.26 75.38 e 67.95 a 56.98 49.07 32.37 54.62
1961 29.05 38.93 44.58 50.42 59.34 69.97 76.44 73.68 72.23 b 58.73 49.88 37.53 55.06
1962 36.06 35.57 42.31 54.83 64.35 71.55 73.39 72.73 65.75 58.37 45.10 33.69 54.48
1963 33.18 31.54 48.15 54.08 60.90 70.90 75.39 72.29 64.33 58.42 50.88 32.18 54.35
1964 37.39 35.40 45.11 50.18 63.66 70.58 74.82 70.73 67.82 54.55 49.42 41.37 55.09
1965 32.58 36.38 40.74 49.03 63.87 69.57 73.15 73.27 69.63 55.34 48.23 40.68 54.37
1966 32.31 34.98 44.32 48.78 59.50 71.25 75.39 74.13 66.02 56.06 48.50 37.90 54.10
1967 39.45 ----- z 41.32 53.70 57.02 69.68 74.34 72.97 64.92 55.42 42.82 38.66 55.48
1968 31.00 31.52 45.77 52.83 60.10 71.37 75.19 75.82 67.90 59.44 49.88 35.95 54.73
1969 32.77 33.75 39.53 54.83 62.00 72.48 75.39 74.05 68.13 56.87 46.55 36.00 54.36
1970 28.40 36.38 39.82 51.78 63.42 70.90 74.56 75.13 71.93 60.39 49.23 38.47 55.03
1971 31.53 38.41 40.89 50.73 60.05 71.22 74.55 73.24 70.32 63.29 47.62 45.71 55.63
1972 37.85 35.69 43.11 49.75 60.98 67.82 75.56 72.94 68.25 54.15 47.05 44.58 54.81
1973 36.50 ----- z 47.61 53.67 61.06 73.92 75.69 75.65 69.97 59.10 49.40 41.40 58.54
1974 41.08 35.89 45.37 56.38 62.09 b 68.53 75.15 74.40 68.32 54.84 48.08 40.74 55.91
1975 39.77 39.04 42.90 48.37 63.60 70.78 74.44 76.12 a 67.37 60.77 52.88 39.45 56.29
1976 32.32 44.91 46.98 56.03 61.90 73.02 73.95 72.85 66.80 53.45 41.33 34.02 54.80
1977 23.81 37.00 49.10 56.22 64.31 e 68.63 76.19 76.77 70.98 55.71 50.47 37.56 55.56
1978 32.13 25.61 40.44 52.13 59.27 70.87 73.10 77.24 67.97 56.45 50.13 40.53 53.82
1979 35.21 26.46 46.29 51.80 64.03 67.82 74.05 74.24 68.57 56.65 52.10 41.31 54.88
1980 34.97 31.53 41.85 53.19 q 65.10 ----- z ----- z ----- z ----- z ----- z ----- z ----- z 43.36
1981 30.74 40.87 a 42.50 ----- z 63.37 74.72 77.00 72.45 68.62 b 56.10 g 47.97 a 37.77 55.60
1982 29.97 40.78 c 45.27 53.78 63.81 69.82 77.53 74.13 68.50 59.76 53.38 49.03 57.15
1983 37.81 37.29 ----- z 53.50 64.53 73.52 79.08 a 78.15 72.40 61.53 50.98 38.63 58.86
1984 32.27 42.53 40.02 52.85 62.60 a 68.13 68.98 a 76.42 a 68.77 63.47 49.08 47.35 56.04
1985 31.24 37.82 48.23 a 58.30 67.55 72.08 77.06 76.31 71.33 63.00 57.28 37.45 58.14
1986 36.62 a 36.64 47.50 53.48 67.40 75.25 80.18 73.97 69.58 61.65 49.32 41.71 57.77
1987 35.16 33.84 45.34 51.05 64.45 74.85 79.48 76.10 71.32 55.60 51.90 42.27 56.78
1988 32.35 38.41 46.35 51.50 62.47 73.10 78.77 79.03 68.40 54.48 50.45 39.15 a 56.21
1989 40.74 37.98 45.03 54.37 63.07 a 76.25 77.21 76.13 71.72 60.48 49.40 29.19 56.80
1990 44.69 45.91 48.95 55.32 63.73 72.97 78.74 76.11 68.92 63.69 52.78 47.05 59.91
1991 39.56 43.43 48.71 57.63 70.76 74.52 79.00 78.10 69.72 60.10 50.62 44.26 59.70
1992 38.98 40.53 43.08 52.85 60.27 69.25 77.53 73.35 70.42 56.74 50.14 a 41.52 56.22
1993 41.40 34.48 41.37 53.02 65.56 73.12 79.89 76.56 70.77 59.23 49.78 38.95 57.01
1994 31.52 36.62 45.27 60.15 61.39 76.50 79.27 73.85 69.27 58.71 55.02 45.15 57.73
1995 41.06 35.30 47.48 56.30 64.18 72.33 80.03 77.77 70.87 63.35 46.85 36.21 57.65
1996 36.50 37.36 41.77 55.92 63.06 75.87 77.95 75.39 71.62 60.79 46.10 47.31 57.47
1997 40.52 47.48 52.39 58.70 66.35 75.27 80.98 77.13 72.93 60.50 48.17 41.71 60.18
1998 44.35 43.07 47.77 57.93 ----- z 72.77 78.03 77.13 74.30 61.05 50.45 45.39 59.30
1999 41.69 41.66 44.53 55.68 64.66 73.77 81.15 78.87 71.00 59.73 54.47 43.39 59.22
2000 36.60 42.67 50.94 54.58 66.82 75.22 75.16 75.29 69.77 60.40 47.23 34.32 57.42
2001 35.16 41.57 43.08 56.80 65.06 74.92 74.90 78.63 69.63 60.42 54.16 a 47.35 58.47
2002 42.94 44.64 48.92 59.75 65.39 75.10 79.34 78.89 72.23 61.34 48.97 39.42 59.74
2003 31.85 35.09 46.56 53.03 59.50 72.17 78.69 78.61 71.52 58.82 54.18 40.82 56.74
2004 32.08 38.55 47.52 56.22 71.63 73.57 78.02 75.90 71.23 58.68 50.93 42.45 58.06
2005 37.03 37.82 41.16 56.12 59.81 74.40 79.63 79.90 74.03 61.10 53.47 37.55 57.67
2006 45.10 40.23 46.58 58.35 64.77 73.22 80.61 79.77 68.80 58.89 53.03 47.68 59.75
2007 43.66 31.93 47.60 52.45 65.90 74.98 77.58 78.73 72.58 66.63 49.90 41.87 58.65
2008 39.97 41.93 48.53 56.73 63.45 78.00 79.40 75.19 71.62 59.23 47.90 44.69 58.89
2009 33.21 41.34 45.65 56.97 65.23 71.88 76.52 79.11 70.45 59.82 a 52.92 40.07 a 57.76
2010 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
2011 ----- z ----- z ----- z ----- z 79.12 z 77.17 l 80.38 j 79.62 r 71.75 j 63.00 z ----- z ----- z 9999.00
Period of Record Statistics
MEAN 36.37 37.82 44.64 54.12 63.11 72.06 76.56 75.25 69.36 58.99 49.44 39.91 56.49
S.D. 4.81 4.32 3.62 2.81 2.69 2.50 2.52 2.35 2.26 2.85 2.96 4.54 1.75
SKEW 0.12 -0.42 -0.22 -0.02 0.61 0.00 -0.22 0.12 -0.07 0.07 0.00 -0.19 0.37
MAX 48.24 47.48 52.85 60.15 71.63 78.00 81.15 79.90 74.30 66.63 57.28 49.03 60.18
MIN 23.81 25.61 33.90 48.37 57.02 67.05 68.98 69.94 64.33 53.45 41.33 29.19 53.28
NO YRS 63 62 63 62 63 63 62 64 64 63 64 64 56