YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1951 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 42.67 | v | 37.67 | 28.58 | 33.12 | j | ||
1952 | 29.10 | 30.52 | 36.61 | 48.03 | 54.65 | 58.43 | 67.61 | 71.55 | 61.83 | 47.58 | 34.50 | 35.03 | 47.95 | |||||||||||||
1953 | 34.13 | 30.68 | 37.97 | 45.00 | 49.45 | 58.87 | 73.45 | 68.84 | 58.03 | 48.26 | 38.23 | 26.97 | 47.49 | |||||||||||||
1954 | 29.61 | 36.43 | 37.57 | a | 48.47 | 56.70 | d | 60.40 | 72.29 | 65.97 | 59.77 | 47.52 | b | 38.41 | a | 28.55 | 48.47 | |||||||||
1955 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 73.00 | r | 72.32 | 61.23 | 48.58 | 35.97 | 30.90 | 49.80 | g | |||||
1956 | 25.52 | 24.34 | 35.48 | ----- | z | ----- | z | ----- | z | ----- | z | 65.33 | j | 57.23 | 45.94 | 33.23 | 29.45 | 35.89 | e | |||||||
1957 | 35.16 | 43.75 | 41.87 | 47.17 | 53.55 | 64.07 | 69.84 | 67.87 | 52.37 | 45.19 | 34.23 | 29.50 | a | 48.71 | ||||||||||||
1958 | 27.27 | a | 36.79 | 37.97 | 41.13 | 52.94 | 55.97 | 59.26 | 69.48 | ----- | z | ----- | z | ----- | z | ----- | z | 47.60 | d | |||||||
1959 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 73.33 | v | 67.61 | c | 52.14 | h | ----- | z | 34.48 | a | 33.00 | 45.03 | i | |
1960 | 28.54 | e | 28.85 | i | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 62.27 | d | 48.84 | 38.56 | e | ----- | z | 44.55 | h | |
1961 | 29.53 | n | 31.77 | o | ----- | z | ----- | z | ----- | z | ----- | z | 70.36 | t | 69.45 | 56.45 | a | 45.66 | b | ----- | z | ----- | z | 57.19 | i | |
1962 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1963 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 61.83 | r | 68.68 | 72.65 | 61.27 | ----- | z | ----- | z | ----- | z | 67.53 | i | |||
1964 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1965 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1966 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 63.34 | a | 49.60 | f | 40.87 | 33.37 | a | 45.86 | i | |
1967 | 31.33 | a | 33.00 | b | 42.13 | 42.63 | ----- | z | 58.36 | e | 76.03 | a | 74.90 | 66.14 | a | 54.22 | h | 42.37 | 29.00 | c | 49.59 | b | ||||
1968 | 32.03 | 43.36 | g | 41.23 | e | 45.68 | k | 54.59 | b | 63.90 | j | 70.97 | 68.94 | 59.86 | a | 50.28 | f | 36.93 | 25.61 | 48.77 | d | |||||
1969 | 32.58 | 35.25 | 34.71 | 46.53 | 45.48 | 63.80 | 71.26 | 75.74 | 64.21 | a | 40.71 | 42.20 | 29.60 | a | 48.51 | |||||||||||
1970 | 30.55 | 39.43 | 36.94 | 41.77 | 58.00 | 66.87 | 73.52 | 72.65 | 59.19 | c | 49.52 | 41.63 | 32.37 | a | 50.20 | |||||||||||
1971 | 30.15 | d | 31.54 | 38.97 | 45.27 | 53.39 | 64.03 | 73.10 | 75.26 | 58.27 | 48.68 | 37.83 | 29.57 | a | 48.84 | |||||||||||
1972 | 26.71 | 32.83 | 43.03 | 47.17 | 55.03 | a | 66.57 | 71.32 | 68.58 | 60.40 | e | 53.74 | 36.73 | 29.10 | a | 49.27 | ||||||||||
1973 | 29.21 | b | 37.14 | 39.16 | 43.47 | 58.77 | 66.40 | 72.48 | 65.71 | 59.93 | 49.61 | 38.72 | a | 29.68 | 49.19 | |||||||||||
1974 | 30.52 | 30.48 | a | 41.93 | a | 41.53 | 57.87 | a | 65.00 | 69.45 | 66.10 | 65.23 | 52.55 | 40.66 | a | 28.23 | 49.13 | |||||||||
1975 | 27.26 | 35.11 | 34.52 | 40.97 | 48.32 | 61.07 | 69.77 | 64.42 | 65.63 | 46.45 | 35.50 | 35.13 | 47.01 | |||||||||||||
1976 | 28.06 | 37.21 | 37.81 | 44.00 | 56.55 | 60.63 | 70.87 | 64.10 | 62.80 | 48.00 | 38.40 | 28.35 | 48.07 | |||||||||||||
1977 | 32.29 | 35.61 | 35.03 | 46.93 | 50.39 | 61.70 | 65.39 | 70.19 | e | 60.23 | 52.94 | 37.90 | 35.94 | 48.71 | ||||||||||||
1978 | 37.90 | 40.14 | 46.87 | 45.67 | 52.13 | 60.23 | 64.35 | 65.61 | 60.33 | 53.48 | 39.60 | 29.48 | 49.65 | |||||||||||||
1979 | 29.90 | 32.75 | 40.48 | 42.70 | 54.06 | 60.23 | 64.23 | 62.32 | 61.77 | 50.65 | 37.23 | 33.13 | 47.45 | |||||||||||||
1980 | 38.00 | 40.48 | 38.45 | 45.60 | 52.90 | 57.80 | 67.73 | a | 64.55 | 59.80 | 50.84 | 38.63 | 37.39 | 49.35 | ||||||||||||
1981 | 34.94 | 34.61 | 41.03 | a | 48.67 | 53.55 | 65.87 | 70.52 | 68.65 | 63.20 | 46.35 | 42.57 | 34.52 | 50.37 | ||||||||||||
1982 | 31.94 | 38.04 | 40.84 | 44.57 | 54.84 | 60.47 | 67.87 | 71.48 | 62.87 | 46.77 | 39.17 | 31.55 | 49.20 | |||||||||||||
1983 | 33.58 | 37.79 | 41.81 | 42.07 | 53.00 | 63.40 | 68.90 | 71.19 | 66.37 | 52.23 | 41.00 | 33.00 | 50.36 | |||||||||||||
1984 | 33.42 | 33.48 | 39.10 | 45.90 | 59.03 | 64.23 | 74.29 | 71.65 | 63.70 | 45.39 | 37.07 | 35.45 | 50.23 | |||||||||||||
1985 | 32.84 | 32.93 | 40.65 | 50.20 | 55.48 | 64.57 | 74.13 | 67.87 | 57.83 | a | 50.45 | 38.10 | 35.23 | 50.02 | ||||||||||||
1986 | 39.26 | 40.32 | 46.61 | 48.97 | a | 57.13 | 68.63 | 70.35 | 73.74 | 58.63 | 51.19 | 40.37 | 33.03 | 52.35 | ||||||||||||
1987 | 31.35 | 38.07 | 39.81 | 51.00 | 58.39 | 67.07 | 68.94 | 72.87 | 63.03 | 55.77 | 41.33 | 30.71 | 51.53 | |||||||||||||
1988 | 31.77 | 35.31 | 37.29 | 48.13 | 54.19 | 67.53 | 73.71 | 69.65 | 60.53 | 56.74 | 39.93 | 34.84 | 50.80 | |||||||||||||
1989 | 32.74 | 35.57 | 44.03 | 52.77 | 57.61 | 63.60 | 73.55 | 68.13 | 62.07 | 50.03 | 40.40 | 31.35 | 50.99 | |||||||||||||
1990 | 32.26 | 35.25 | 44.13 | a | 51.20 | 55.74 | 64.27 | 72.80 | a | 68.65 | 64.57 | 48.42 | 38.47 | 24.94 | 50.06 | |||||||||||
1991 | 28.83 | h | 37.50 | j | 35.81 | j | 41.08 | d | 48.79 | c | 57.57 | b | 68.50 | y | 69.64 | i | 61.50 | b | 53.10 | b | 40.79 | f | 34.17 | h | 52.41 | g |
1992 | 33.30 | k | 41.42 | c | 43.92 | e | 49.50 | 58.71 | c | 61.57 | 68.24 | b | 73.00 | a | 62.43 | b | 52.46 | c | 35.00 | e | 30.04 | f | 54.63 | b | ||
1993 | 34.72 | f | 38.09 | f | ----- | z | 46.03 | a | 57.40 | a | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 34.10 | 29.40 | a | 41.73 | h | |
1994 | 30.11 | c | 33.33 | a | 43.03 | b | 46.57 | 56.87 | a | 63.97 | 68.45 | 73.48 | b | 63.50 | 48.45 | 33.10 | 32.65 | 49.46 | ||||||||
1995 | ----- | z | ----- | z | ----- | z | 42.26 | k | 45.75 | w | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1996 | ----- | z | 40.35 | l | 43.23 | 51.13 | 59.23 | 69.14 | a | 78.23 | 75.29 | 65.58 | d | 51.86 | b | 46.18 | h | 35.77 | 58.83 | c | ||||||
1997 | 36.23 | 36.25 | 44.42 | 46.90 | 63.84 | 66.47 | 72.52 | 75.68 | 68.87 | 51.52 | 42.60 | 32.94 | 53.18 | |||||||||||||
1998 | 35.87 | 37.75 | 41.42 | 45.33 | 53.61 | 62.48 | a | 74.40 | a | 76.17 | a | 63.29 | b | 50.10 | 37.73 | 30.06 | 50.68 | |||||||||
1999 | 31.55 | 34.82 | 41.43 | a | 44.66 | a | 55.93 | a | 65.77 | 74.19 | 75.10 | 66.31 | d | 54.37 | d | 40.61 | b | 31.55 | b | 51.36 | ||||||
2000 | 35.48 | 40.90 | 43.68 | 53.52 | a | 62.84 | f | 71.47 | 67.62 | b | 67.32 | 65.00 | 50.74 | 34.77 | 31.71 | 51.11 | a | |||||||||
2001 | 33.19 | 35.96 | 42.61 | 48.74 | c | 62.16 | 65.64 | b | 72.00 | g | 75.10 | 67.73 | 54.68 | 43.90 | 30.45 | 50.92 | a | |||||||||
2002 | 29.03 | 36.43 | 39.19 | 53.67 | c | 58.65 | 69.67 | 78.16 | 71.26 | 68.00 | 56.26 | 45.45 | a | 35.35 | 53.43 | |||||||||||
2003 | 41.68 | 39.25 | 46.94 | 45.80 | 60.16 | 73.20 | 79.71 | 80.84 | 70.13 | 58.65 | 39.87 | 34.39 | 55.88 | |||||||||||||
2004 | 34.20 | a | 35.52 | 51.97 | 50.97 | 59.55 | 70.27 | 75.71 | 73.06 | 65.77 | 54.74 | 40.37 | 35.81 | 53.99 | ||||||||||||
2005 | 39.44 | d | 40.85 | b | 40.59 | d | 47.52 | c | 57.76 | f | 65.29 | f | 74.46 | c | 74.04 | c | 64.04 | f | 56.77 | 43.86 | a | 31.79 | c | 49.92 | c | |
2006 | 34.47 | a | 36.39 | e | 41.88 | e | 51.50 | b | 63.83 | a | 70.23 | 78.63 | a | 74.80 | a | 64.48 | a | 52.80 | a | 41.30 | 31.97 | a | 53.52 | |||
2007 | 29.43 | c | 35.11 | 46.71 | 50.43 | b | 60.16 | 66.80 | 76.65 | 76.00 | a | 66.17 | 50.67 | a | 46.30 | g | 29.76 | b | 53.44 | a | ||||||
2008 | 30.63 | d | 31.73 | g | 40.50 | a | 48.26 | c | 56.45 | 64.43 | 76.19 | 74.45 | 63.63 | 51.58 | 44.53 | 32.13 | 52.98 | a | ||||||||
2009 | 35.48 | 38.22 | a | 41.71 | 49.03 | 64.77 | 66.00 | 75.56 | d | 72.77 | 68.83 | 51.17 | a | 42.97 | 31.40 | a | 53.16 | |||||||||
2010 | 37.03 | 39.78 | a | 42.83 | a | 47.67 | 53.58 | 68.00 | 78.65 | 74.58 | 66.62 | a | 57.73 | a | 39.07 | 38.61 | 53.68 | |||||||||
2011 | 32.26 | 33.93 | 43.68 | 48.80 | 54.39 | 63.63 | 74.81 | 75.83 | a | 68.57 | 53.39 | 39.37 | 31.81 | 51.70 | ||||||||||||
2012 | 34.39 | 37.93 | 42.16 | 53.00 | 62.37 | a | 69.53 | 76.94 | 76.52 | 68.97 | 55.32 | 45.07 | 35.39 | 54.80 | ||||||||||||
2013 | 30.61 | c | 33.92 | d | 45.13 | 50.30 | g | 60.16 | 68.34 | a | 79.17 | m | 75.29 | 62.03 | a | 50.77 | 42.23 | 30.06 | 49.86 | b | ||||||
2014 | 31.73 | a | 37.61 | 45.90 | a | 49.93 | 57.80 | a | 66.32 | b | 73.90 | 67.63 | a | 64.50 | j | 56.81 | 40.04 | c | 36.10 | 51.25 | a | |||||
2015 | 39.13 | 43.52 | a | 48.00 | 49.83 | 56.43 | a | 72.17 | 75.39 | 77.10 | 71.70 | 60.87 | 37.53 | 30.19 | 55.16 | |||||||||||
2016 | 34.26 | 40.21 | 43.68 | 49.83 | 55.48 | 69.00 | 75.00 | 69.97 | 63.43 | 59.10 | 44.53 | 34.61 | 53.26 | |||||||||||||
2017 | 35.71 | 39.96 | 35.38 | w | ----- | z | ----- | z | ----- | z | 76.53 | n | 74.39 | c | ----- | z | ----- | z | ----- | z | ----- | z | 50.02 | i | ||
2018 | ----- | z | 34.15 | b | 42.39 | 53.52 | a | 57.93 | a | 70.33 | 78.42 | 75.68 | 70.32 | k | 54.00 | h | 40.03 | a | 34.29 | 54.08 | c | |||||
2019 | 33.93 | b | 31.96 | 44.97 | 50.53 | 52.84 | 66.14 | a | 74.45 | 74.52 | 65.87 | 47.29 | 42.17 | 37.35 | 51.83 | |||||||||||
2020 | 33.48 | 35.34 | 45.32 | 44.00 | n | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 38.05 | i | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 32.71 | 36.21 | 41.63 | 47.43 | 56.13 | 64.87 | 72.32 | 71.50 | 63.14 | 51.26 | 39.29 | 32.04 | 50.71 | |||||||||||||
S.D. | 3.47 | 3.58 | 3.58 | 3.48 | 3.94 | 4.06 | 4.21 | 3.97 | 3.75 | 4.05 | 3.09 | 3.01 | 2.28 | |||||||||||||
SKEW | 0.33 | -0.41 | 0.15 | -0.14 | -0.15 | -0.15 | -0.60 | -0.26 | -0.13 | 0.12 | -0.07 | -0.03 | 0.49 | |||||||||||||
MAX | 41.68 | 43.75 | 51.97 | 53.67 | 64.77 | 73.20 | 79.71 | 80.84 | 71.70 | 60.87 | 45.45 | 38.61 | 55.88 | |||||||||||||
MIN | 25.52 | 24.34 | 34.52 | 40.97 | 45.48 | 55.97 | 59.26 | 62.32 | 52.37 | 40.71 | 33.10 | 24.94 | 47.01 | |||||||||||||
YRS | 55 | 54 | 56 | 54 | 53 | 53 | 53 | 59 | 57 | 55 | 58 | 58 | 41 |