YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1957 | ----- | z | ----- | z | ----- | z | 36.50 | 39.10 | 41.81 | c | ----- | z | ----- | z | ----- | z | 41.54 | g | ----- | z | 36.36 | i | 39.14 | i | ||
1958 | 39.62 | b | 33.09 | e | 31.30 | d | 35.00 | f | 40.28 | b | 40.82 | b | 40.96 | f | 41.56 | o | 39.60 | j | 39.88 | o | 38.62 | v | ----- | z | 37.02 | g |
1959 | 32.80 | u | ----- | z | ----- | z | ----- | z | 39.56 | o | 44.61 | g | 41.10 | k | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1960 | ----- | z | 35.21 | a | 33.29 | c | 36.92 | e | 39.10 | b | 41.17 | a | 39.08 | e | 41.82 | i | 41.22 | g | 40.12 | f | 37.50 | 35.58 | g | 37.47 | e | |
1961 | 34.14 | i | 34.53 | i | 36.00 | c | 38.35 | d | 36.26 | h | 39.33 | f | 38.56 | f | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 37.17 | j |
1962 | ----- | z | ----- | z | ----- | z | ----- | z | 37.87 | a | 40.48 | c | 39.27 | a | 41.33 | a | 41.60 | 40.13 | 38.67 | 36.30 | a | 39.46 | d | |||
1963 | 33.90 | b | 37.37 | a | 35.42 | 36.27 | 36.61 | 39.00 | 38.55 | 41.77 | 43.00 | b | 40.73 | a | 39.13 | 39.07 | a | 38.40 | ||||||||
1964 | 33.72 | b | 33.03 | 35.00 | c | 37.17 | 37.07 | a | 41.20 | 39.80 | a | 39.81 | 40.67 | 40.87 | a | 37.33 | c | 36.39 | c | 37.67 | ||||||
1965 | 34.83 | b | 29.48 | a | 33.71 | 34.83 | a | 39.90 | a | 40.50 | 39.72 | b | 40.10 | b | 43.14 | a | 39.45 | b | 39.69 | a | 36.07 | b | 37.62 | |||
1966 | 36.85 | e | 34.23 | b | 38.94 | 36.79 | f | 40.33 | g | 43.64 | b | 43.48 | b | 40.57 | h | 40.08 | f | 38.81 | j | 39.14 | b | 37.07 | a | 39.05 | e | |
1967 | 34.26 | 35.85 | h | 37.52 | 37.11 | b | 45.18 | i | 47.14 | i | 46.22 | d | 44.35 | 43.87 | 42.30 | a | 38.47 | 35.43 | a | 39.95 | c | |||||
1968 | ----- | z | 35.34 | 39.35 | 38.27 | 41.61 | 43.87 | 42.74 | 42.77 | 42.03 | 42.74 | 42.33 | 37.90 | b | 40.82 | a | ||||||||||
1969 | 32.87 | a | 35.96 | 34.29 | 35.26 | g | 40.50 | k | 44.38 | i | 41.38 | g | 41.80 | k | 42.90 | i | 42.57 | h | ----- | z | 39.40 | k | 34.37 | i | ||
1970 | 35.26 | l | 36.95 | h | 36.69 | b | 35.48 | c | 40.81 | 44.41 | h | 39.50 | i | 43.76 | j | 41.29 | i | 42.14 | j | 39.21 | k | 36.83 | a | 37.45 | h | |
1971 | 35.09 | t | 37.74 | i | 36.38 | j | 36.90 | i | 37.48 | 40.97 | 42.84 | 40.68 | 40.37 | 41.29 | j | 38.83 | a | 35.28 | m | 40.19 | f | |||||
1972 | 36.95 | k | 35.65 | i | 38.38 | b | 37.67 | 39.10 | 41.66 | a | 43.77 | 43.77 | 42.97 | 40.84 | 41.07 | b | 37.05 | i | 41.02 | c | ||||||
1973 | 39.70 | d | 35.86 | 34.23 | 38.57 | 38.85 | d | 46.24 | e | 40.76 | j | 41.81 | 42.46 | b | 40.39 | 39.73 | 37.47 | p | 39.78 | b | ||||||
1974 | 36.35 | 35.75 | 36.56 | d | 36.00 | b | 37.64 | i | 41.40 | j | 39.86 | i | 43.72 | f | 41.80 | j | 41.09 | h | 36.37 | k | 35.40 | p | 36.17 | h | ||
1975 | 33.95 | l | 33.94 | j | 36.30 | k | 38.46 | b | 40.38 | j | 43.52 | i | 39.95 | j | 42.85 | d | ----- | z | ----- | z | ----- | z | ----- | z | 40.66 | j |
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 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2003 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2004 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2005 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2006 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2007 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2008 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2009 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2010 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2011 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2012 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2013 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2014 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2015 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2016 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2017 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2018 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2019 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2020 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2021 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2022 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2023 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2024 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 35.79 | 34.53 | 35.76 | 37.04 | 38.98 | 41.78 | 41.55 | 41.93 | 42.23 | 40.93 | 39.26 | 36.88 | 37.90 | |||||||||||||
S.D. | 2.53 | 2.22 | 2.32 | 1.20 | 1.53 | 1.93 | 2.59 | 1.51 | 1.17 | 1.09 | 1.45 | 1.14 | 0.44 | |||||||||||||
SKEW | 0.60 | -1.12 | -0.11 | -0.29 | 0.06 | 1.01 | 0.40 | 0.15 | -0.38 | 0.54 | 0.73 | 0.77 | 0.70 | |||||||||||||
MAX | 39.70 | 37.37 | 39.35 | 38.57 | 41.61 | 46.24 | 46.22 | 44.35 | 43.87 | 42.74 | 42.33 | 39.07 | 38.40 | |||||||||||||
MIN | 32.87 | 29.48 | 31.30 | 34.83 | 36.61 | 39.00 | 38.55 | 39.81 | 40.37 | 39.45 | 37.33 | 35.43 | 37.62 | |||||||||||||
YRS | 9 | 10 | 14 | 13 | 12 | 12 | 10 | 10 | 9 | 8 | 11 | 8 | 3 |