LEWES, DELAWARE

Monthly Average Maximum 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 46.04 65.40 a 65.73 71.52 82.43 83.16 82.10 80.07 68.42 60.73 39.61 67.75
1946 45.90 48.11 59.42 61.30 71.45 78.03 79.97 78.00 76.27 68.90 59.73 50.97 64.84
1947 51.16 40.64 45.52 63.93 71.90 75.93 81.84 83.48 77.07 71.48 53.90 44.21 b 63.42
1948 ----- z ----- z ----- z ----- z ----- z ----- z ----- z 82.45 b 76.97 64.06 62.73 49.33 a 67.11
1949 51.61 51.82 54.81 62.97 72.84 81.43 87.32 84.45 74.90 a 71.06 58.07 51.39 66.89
1950 58.48 44.82 51.16 60.30 67.52 80.30 83.33 j 80.90 b 72.97 68.71 59.77 45.10 62.73
1951 49.65 49.14 51.77 63.57 72.65 79.10 83.55 82.42 77.97 68.87 55.57 51.52 65.48
1952 49.32 46.90 51.39 64.30 71.06 83.40 87.58 83.23 78.17 66.03 57.30 47.71 65.53
1953 49.45 50.07 55.29 63.83 74.32 81.07 85.55 83.45 78.93 69.65 e 59.00 51.61 66.85
1954 45.29 52.39 54.61 68.30 70.61 81.30 85.77 82.57 a 79.00 d 72.13 55.20 46.81 66.17
1955 42.17 a 47.25 56.52 65.57 74.03 77.23 88.84 85.42 76.83 70.23 57.80 41.19 65.26
1956 38.84 48.59 50.55 60.20 72.16 80.90 82.71 84.48 76.33 67.03 58.11 b 55.52 64.62
1957 40.61 48.14 51.39 69.37 74.10 83.23 86.61 82.29 79.80 64.45 58.97 50.61 65.80
1958 41.32 39.11 47.10 63.20 70.74 77.67 86.61 81.13 77.10 66.10 60.23 39.10 62.45
1959 44.03 46.50 54.42 64.40 76.58 82.00 83.58 84.68 78.80 70.45 55.50 49.10 65.84
1960 43.97 46.86 42.10 68.30 70.39 80.50 81.97 82.12 e 75.69 a 66.74 59.70 42.19 63.38
1961 38.61 47.36 52.77 60.40 68.45 79.37 85.61 82.32 80.11 b 69.61 58.80 45.71 64.09
1962 44.97 43.29 50.81 64.33 73.94 80.57 83.13 81.68 75.10 68.58 52.57 40.35 63.28
1963 41.97 41.18 58.77 63.87 71.19 80.50 84.74 82.42 73.10 69.55 60.63 40.42 64.03
1964 47.58 43.86 55.03 59.63 74.26 82.60 83.55 81.58 78.17 64.42 61.33 50.16 65.18
1965 42.58 46.36 50.68 59.27 75.61 79.67 82.03 81.84 77.63 65.39 57.40 50.10 64.05
1966 40.10 42.75 54.68 57.97 68.87 81.67 85.55 83.55 74.60 66.39 58.50 46.03 63.39
1967 48.42 ----- z 50.48 64.93 66.26 79.57 81.74 80.16 73.63 65.94 52.43 47.39 64.63
1968 39.13 41.17 56.45 63.07 69.87 81.17 83.45 86.00 78.77 69.19 58.03 44.68 64.25
1969 40.45 39.14 47.90 65.73 71.55 81.10 83.10 83.00 77.60 66.77 55.60 43.97 62.99
1970 37.23 45.57 48.26 61.20 73.71 79.80 82.65 84.68 82.40 68.42 57.47 47.03 64.03
1971 39.77 47.86 49.19 62.23 69.29 79.77 84.13 81.84 77.53 69.81 57.27 54.48 64.43
1972 45.65 44.62 51.61 60.10 68.87 75.73 83.45 82.19 76.43 62.81 55.07 52.42 63.25
1973 45.03 ----- z 55.52 62.77 69.13 81.87 85.10 84.10 78.80 69.74 59.33 50.42 67.44
1974 49.32 44.75 54.29 67.67 71.63 a 76.40 84.87 82.39 77.13 65.90 58.03 48.97 65.11
1975 48.87 47.29 51.71 57.83 72.42 78.93 82.84 85.63 a 75.53 69.74 63.40 48.19 65.20
1976 41.29 56.62 57.39 68.23 71.39 82.80 83.23 81.81 76.67 61.71 51.80 43.74 64.72
1977 32.97 47.29 58.74 67.20 75.62 e 78.67 85.74 86.71 79.43 64.26 57.87 46.06 65.05
1978 40.10 33.68 49.16 62.03 67.65 80.50 81.45 85.16 77.60 67.77 57.60 51.26 62.83
1979 43.94 34.25 56.77 60.63 73.03 77.37 82.29 82.39 76.07 67.35 61.70 50.19 63.83
1980 41.97 40.03 50.77 61.31 q 75.42 ----- z ----- z ----- z ----- z ----- z ----- z ----- z 52.05
1981 38.68 51.29 52.68 ----- z 73.87 85.43 87.29 83.52 81.00 b 68.35 e 57.41 a 45.61 65.92
1982 39.87 50.04 c 55.90 66.50 74.26 80.03 86.90 84.16 77.70 69.19 64.17 57.10 67.15
1983 44.10 44.25 ----- z 63.57 75.39 84.23 89.63 a 86.97 82.40 70.26 60.20 46.65 67.97
1984 40.42 50.93 48.26 62.47 72.53 a 75.83 73.13 84.90 a 78.27 71.42 59.17 57.32 64.55
1985 39.58 45.93 58.81 70.97 79.39 82.03 87.10 85.42 81.57 72.03 64.80 46.74 67.86
1986 46.77 43.43 58.61 63.83 79.32 86.53 89.81 82.55 77.87 69.68 57.40 48.61 67.03
1987 41.90 40.96 53.94 58.77 74.58 84.77 88.52 84.45 79.03 65.74 61.43 50.26 65.36
1988 39.97 46.97 55.74 59.87 71.65 83.50 87.97 87.71 77.27 64.48 60.07 49.73 a 65.41
1989 49.35 46.11 53.61 63.07 72.13 a 84.63 85.48 82.81 78.97 70.32 58.17 36.74 65.12
1990 53.42 56.36 58.19 65.03 73.13 82.37 87.23 83.71 77.23 73.06 62.03 55.87 68.97
1991 47.13 52.93 57.03 67.13 81.29 84.23 87.16 85.90 79.07 69.55 58.87 53.10 68.62
1992 46.77 48.21 50.87 62.67 69.52 78.37 85.81 81.68 77.77 65.61 57.31 a 48.71 64.44
1993 48.10 42.64 49.39 62.27 75.13 82.23 88.19 85.39 79.20 68.71 59.03 45.13 65.45
1994 39.10 44.89 54.26 71.30 72.48 86.23 87.06 82.52 77.67 67.39 63.33 52.61 66.57
1995 47.48 43.07 56.84 67.73 73.65 80.53 89.03 85.81 78.40 72.90 55.37 43.52 66.19
1996 44.52 45.66 50.29 65.43 72.45 85.17 86.90 83.10 79.57 69.74 53.93 54.61 65.95
1997 48.97 56.36 62.42 69.17 78.32 86.13 90.29 85.97 81.40 69.45 54.47 48.55 69.29
1998 51.39 49.18 55.45 68.07 ----- z 81.70 86.77 85.35 83.20 69.39 59.27 52.97 67.52
1999 51.06 49.61 53.65 66.17 73.35 82.47 90.52 87.35 77.90 68.77 63.20 51.90 68.00
2000 45.29 52.59 60.42 63.63 75.81 84.30 82.55 82.35 77.73 69.74 55.00 41.71 65.93
2001 42.45 50.21 51.03 66.87 74.48 83.33 83.74 86.87 77.93 70.74 63.87 54.52 67.17
2002 50.71 54.54 58.45 69.57 75.87 84.30 88.71 87.32 79.87 67.45 56.47 47.00 68.35
2003 38.81 41.89 56.58 61.60 66.87 80.23 87.13 86.84 78.63 67.94 63.13 48.26 64.83
2004 40.00 46.31 55.81 65.67 81.10 82.43 85.94 83.32 78.20 66.39 58.20 50.84 66.18
2005 44.19 44.46 48.06 65.83 68.81 82.37 87.26 88.03 82.80 68.32 63.10 44.97 65.68
2006 53.32 48.96 56.26 68.27 74.35 81.30 89.45 87.94 76.53 67.97 59.67 56.13 68.35
2007 51.71 39.18 57.65 61.40 76.55 83.67 85.94 87.19 81.03 74.65 57.93 48.03 67.08
2008 47.77 51.31 57.65 65.50 73.61 88.57 88.58 83.77 78.57 68.06 54.70 54.10 67.68
2009 40.45 50.25 54.81 67.03 74.16 79.87 85.00 87.16 76.97 68.63 a 60.37 47.35 66.00
2010 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 9999.00
2011 ----- z ----- z ----- z ----- z 89.00 z 86.72 l 90.62 j 88.62 r 79.60 j 83.00 z ----- z ----- z 9999.00
Period of Record Statistics
MEAN 44.68 46.48 53.89 64.25 72.92 81.42 85.37 83.95 78.08 68.34 58.58 48.38 65.53
S.D. 4.94 4.83 4.21 3.25 3.21 2.76 2.98 2.15 2.16 2.52 3.02 4.66 1.66
SKEW 0.29 -0.21 -0.09 0.07 0.36 0.04 -1.01 0.09 0.08 -0.22 -0.04 -0.24 0.35
MAX 58.48 56.62 65.40 71.30 81.29 88.57 90.52 88.03 83.20 74.65 64.80 57.32 69.29
MIN 32.97 33.68 42.10 57.83 66.26 75.73 73.13 78.00 72.97 61.71 51.80 36.74 62.45
NO YRS 63 62 63 62 63 63 62 64 64 64 64 64 56