YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1953 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 70.50 | e | 55.65 | n | 46.44 | n | 31.24 | l | 70.50 | k |
1954 | 36.74 | l | 45.22 | l | 44.50 | k | 59.21 | i | 66.58 | m | 74.40 | i | 80.14 | j | 75.15 | k | 70.17 | j | 59.82 | l | 46.62 | m | 32.61 | m | ----- | z |
1955 | 32.53 | m | 36.50 | m | 47.00 | k | 51.58 | q | 58.26 | n | 71.25 | j | 74.95 | k | 75.00 | h | 69.17 | i | 58.86 | j | 44.10 | j | 38.63 | l | ----- | z |
1956 | 39.52 | j | 33.83 | i | 44.50 | j | 52.19 | i | 66.24 | j | 77.30 | j | 76.29 | j | 72.89 | i | 71.09 | m | 57.74 | j | 37.97 | k | 36.29 | n | ----- | z |
1957 | 37.75 | i | 45.42 | i | 46.76 | j | 51.40 | j | 59.42 | l | 72.72 | j | 77.19 | j | 74.64 | i | 66.72 | l | 55.93 | h | 39.86 | l | 36.55 | k | ----- | z |
1958 | 33.12 | j | 41.66 | i | 41.17 | k | 53.15 | g | 67.12 | b | 76.00 | 77.38 | f | 77.00 | j | 67.81 | i | 54.78 | h | 42.62 | n | 38.60 | k | 71.56 | j | |
1959 | 35.56 | m | 37.95 | h | 43.64 | j | 53.10 | j | 62.88 | k | 74.66 | h | 76.95 | j | 74.97 | n | 65.42 | j | 56.12 | k | 42.13 | k | 36.73 | k | ----- | z |
1960 | 31.25 | m | 33.58 | j | 45.33 | h | 57.78 | l | 61.89 | l | 74.27 | h | 77.18 | l | 75.95 | i | 70.80 | j | 54.33 | k | 44.18 | k | 32.64 | m | ----- | z |
1961 | 32.71 | l | 38.22 | j | 45.45 | k | 53.34 | n | 64.90 | j | 75.09 | g | 78.67 | j | 75.76 | h | 65.61 | k | 55.00 | k | 40.58 | l | 31.75 | m | ----- | z |
1962 | 30.90 | k | 42.58 | i | 41.55 | i | 58.33 | j | 62.76 | f | 72.92 | j | 75.88 | j | 76.59 | h | 70.00 | l | 58.39 | h | 47.35 | j | 38.26 | l | ----- | z |
1963 | 30.82 | i | 39.89 | j | 45.17 | m | 53.93 | i | 66.24 | l | 72.68 | m | 80.17 | k | 75.60 | k | 71.39 | k | 62.02 | k | 45.69 | l | 35.44 | n | ----- | z |
1964 | 30.32 | k | 28.39 | k | 41.83 | j | 52.93 | i | 64.65 | k | 71.73 | h | 78.89 | i | ----- | 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 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1967 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1968 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1969 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1970 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1971 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1972 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1973 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1974 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1975 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1976 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1977 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1978 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1979 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1980 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1981 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1982 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1983 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1984 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1985 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1986 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1987 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1988 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1989 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1990 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1991 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1992 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1993 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1994 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1995 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1996 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1997 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1998 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1999 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2000 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2001 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2002 | ----- | z | ----- | z | ----- | z | 58.80 | 64.73 | a | ----- | z | 76.71 | c | 75.77 | c | 66.73 | d | 54.29 | c | 42.07 | c | 33.06 | e | 59.02 | d | |
2003 | 40.83 | a | 39.62 | d | 45.15 | 55.15 | 65.90 | 74.16 | b | 81.95 | 75.87 | 66.52 | b | 59.66 | 42.21 | d | 34.81 | 56.82 | ||||||||
2004 | 32.66 | c | 34.28 | d | 51.47 | a | 54.19 | a | 64.70 | a | 73.50 | 76.07 | a | 74.33 | a | 66.43 | a | 55.31 | d | 44.24 | a | 34.12 | c | 55.11 | ||
2005 | 40.16 | c | 42.27 | d | 43.78 | b | ----- | z | 62.32 | f | 72.72 | a | 80.92 | a | 76.77 | 70.02 | a | 56.46 | e | 45.16 | a | 36.79 | n | 58.70 | c | |
2006 | 38.35 | d | 40.50 | c | 47.24 | b | 56.82 | e | 67.62 | e | 77.00 | c | 79.87 | d | 74.67 | d | 65.98 | a | 57.50 | g | 46.39 | c | 37.30 | i | 59.44 | b |
2007 | 29.47 | 38.27 | b | 47.83 | b | 50.96 | b | 61.82 | 74.33 | c | 80.16 | c | 79.44 | d | 70.50 | f | 58.91 | h | 46.21 | a | 34.41 | d | 54.29 | b | ||
2008 | 29.27 | a | 37.74 | 45.76 | 52.07 | b | 61.45 | b | 74.64 | e | 76.19 | e | 75.74 | 67.68 | 55.81 | 44.43 | a | 36.02 | 54.73 | |||||||
2009 | ----- | z | 40.57 | 47.19 | 55.90 | d | 66.55 | 70.07 | 79.27 | a | ----- | z | 66.75 | 56.18 | f | ----- | z | 30.18 | 57.06 | d | ||||||
2010 | 33.03 | ----- | z | ----- | z | 53.66 | a | ----- | z | 75.95 | b | 78.02 | a | ----- | z | ----- | z | ----- | z | 41.83 | a | 39.23 | 53.62 | f | ||
2011 | 31.97 | a | 33.43 | 49.40 | b | 54.69 | c | 60.19 | d | 74.95 | a | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 50.77 | f | |
2012 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 79.58 | s | 77.82 | 69.17 | 57.90 | 44.73 | 34.10 | b | 56.75 | g | ||||
2013 | 28.70 | c | 36.18 | 46.81 | 54.27 | 63.85 | 77.57 | 76.92 | 75.77 | 68.53 | 53.02 | 42.48 | 33.27 | 54.78 | ||||||||||||
2014 | 35.32 | 42.12 | 46.52 | 53.42 | 61.19 | 75.68 | 78.23 | 72.35 | 70.97 | 58.84 | 42.78 | 37.12 | c | 56.21 | ||||||||||||
2015 | 34.90 | 41.25 | 49.32 | 53.72 | 59.45 | 75.42 | 75.37 | 76.50 | 71.42 | 59.58 | 42.92 | 33.87 | 56.14 | |||||||||||||
2016 | 33.16 | 41.83 | 48.71 | 52.77 | 61.13 | 77.23 | 80.62 | a | 72.90 | 68.42 | 60.43 | a | 47.33 | 35.56 | 56.67 | |||||||||||
2017 | 36.77 | a | 43.57 | 51.73 | 54.21 | a | 62.26 | 75.88 | 78.78 | f | 75.53 | 69.77 | 56.35 | 49.67 | 37.89 | 55.78 | a | |||||||||
2018 | 36.02 | 41.86 | 46.69 | g | 57.17 | 67.60 | 77.18 | 78.94 | 76.22 | b | 70.33 | 56.29 | 41.27 | 34.50 | 57.94 | a | ||||||||||
2019 | 32.98 | 36.46 | 48.18 | 54.42 | 58.87 | 72.22 | 79.55 | a | 77.55 | k | 71.48 | 52.65 | 42.30 | 35.16 | 53.12 | a | ||||||||||
2020 | 35.15 | 37.59 | 48.44 | 55.60 | 67.07 | a | 74.00 | 79.55 | ----- | z | 67.81 | a | 57.19 | 46.93 | 32.79 | 54.74 | a | |||||||||
2021 | 35.63 | a | 37.64 | 45.10 | 53.72 | n | 64.90 | 77.07 | a | 77.67 | b | 75.90 | 71.92 | 54.97 | b | 48.69 | c | 39.17 | d | 57.15 | a | |||||
2022 | 35.74 | 34.19 | b | 45.39 | 55.95 | 64.41 | h | 74.45 | a | ----- | z | 75.20 | c | 71.45 | a | 54.56 | 39.60 | 36.23 | c | 52.28 | b | |||||
2023 | 35.88 | g | 36.45 | 42.32 | 51.62 | b | 65.42 | a | 71.14 | e | 83.38 | a | 78.40 | 69.80 | c | 59.05 | 44.07 | 37.93 | a | 58.14 | a | |||||
2024 | 34.92 | 41.22 | 45.83 | b | 53.90 | f | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 40.66 | i | ||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 34.48 | 38.85 | 47.16 | 54.49 | 63.78 | 74.82 | 78.85 | 75.84 | 69.08 | 56.61 | 44.27 | 35.23 | 55.78 | |||||||||||||
S.D. | 3.34 | 3.04 | 2.42 | 1.96 | 2.89 | 2.05 | 2.16 | 1.77 | 1.95 | 2.36 | 2.63 | 2.32 | 0.89 | |||||||||||||
SKEW | 0.04 | -0.27 | 0.09 | 0.23 | -0.20 | -0.66 | 0.23 | 0.00 | -0.15 | 0.01 | 0.38 | 0.01 | -0.13 | |||||||||||||
MAX | 40.83 | 43.57 | 51.73 | 58.80 | 67.62 | 77.57 | 83.38 | 79.44 | 71.92 | 60.43 | 49.67 | 39.23 | 56.82 | |||||||||||||
MIN | 28.70 | 33.43 | 42.32 | 50.96 | 58.87 | 70.07 | 75.37 | 72.35 | 65.98 | 52.65 | 39.60 | 30.18 | 54.73 | |||||||||||||
YRS | 19 | 20 | 19 | 19 | 19 | 21 | 18 | 17 | 20 | 17 | 20 | 19 | 7 |