YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1940 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1941 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1942 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1943 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1944 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1945 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1946 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1947 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1948 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1949 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1950 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1951 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1952 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1953 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1954 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1955 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1956 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1957 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1958 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1959 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1960 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1961 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1962 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1963 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
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 | ----- | 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 | 41.61 | 55.76 | a | 75.07 | a | ----- | z | 86.16 | 83.68 | 71.40 | 54.42 | 47.04 | b | 42.33 | a | 61.94 | c | |||||
1971 | 38.31 | b | 37.37 | a | 48.67 | a | 58.33 | 64.77 | a | 85.70 | 84.10 | a | 85.03 | 72.56 | c | 60.26 | 48.61 | b | 39.83 | a | 60.29 | |||||
1972 | 38.37 | a | 45.72 | ----- | z | 62.39 | b | 68.61 | 83.40 | 84.77 | a | 81.90 | 72.39 | b | 61.17 | b | 34.79 | a | ----- | z | 63.35 | b | ||||
1973 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 48.90 | a | 38.77 | a | 43.83 | j |
1974 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1975 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 89.58 | 87.81 | ----- | z | ----- | z | ----- | z | ----- | z | 88.69 | j | ||
1976 | 39.74 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 39.74 | k | |
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 | 26.84 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 26.84 | k | |
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 | 38.73 | 39.37 | d | 39.05 | j | |
2001 | 39.84 | 41.68 | c | 46.86 | b | 59.70 | c | 65.26 | h | 84.64 | h | 89.65 | 86.21 | l | 76.58 | f | 65.10 | k | 52.31 | d | 41.67 | d | 53.10 | e | ||
2002 | 40.67 | a | 43.00 | b | 48.59 | b | 63.38 | f | 72.25 | k | 82.68 | k | 89.19 | e | 83.82 | c | 74.54 | b | 56.59 | b | 46.24 | e | 44.00 | d | 58.51 | c |
2003 | 45.78 | d | 34.14 | f | 50.70 | a | 62.07 | a | 67.79 | b | 74.30 | 92.78 | d | 87.27 | e | 72.60 | 70.26 | d | 46.92 | d | 46.37 | d | 65.17 | a | ||
2004 | 44.43 | a | 39.21 | a | 61.91 | h | 60.10 | 72.57 | a | 75.10 | a | 81.48 | 79.07 | c | 76.33 | 63.34 | b | 45.86 | a | 43.88 | f | 63.75 | b | |||
2005 | 44.41 | i | 45.72 | c | 50.50 | a | 57.00 | a | 69.50 | e | 79.27 | d | 88.88 | e | 82.76 | b | 78.12 | e | 64.96 | c | 55.92 | e | 39.95 | j | 67.26 | b |
2006 | 50.79 | c | 43.42 | b | 51.00 | b | 64.35 | d | 74.26 | d | 84.68 | e | 86.90 | b | 81.45 | b | 69.92 | d | 60.82 | c | 51.78 | g | 43.71 | j | 66.76 | b |
2007 | 34.62 | e | 40.73 | b | 56.79 | b | 56.19 | c | 69.11 | c | 78.96 | d | 86.61 | c | 86.11 | c | 76.00 | f | 67.03 | b | 55.35 | g | 39.18 | i | 64.02 | c |
2008 | 37.04 | g | 42.00 | k | 50.25 | g | 57.63 | c | 68.83 | b | 79.14 | a | 88.13 | a | 79.16 | 72.68 | b | 62.57 | a | 53.52 | e | 38.40 | a | 66.67 | c | |
2009 | 42.79 | c | 50.61 | 52.14 | b | 55.43 | 67.60 | a | 75.83 | 81.68 | 81.16 | 71.20 | 51.23 | 53.72 | a | 33.79 | b | 59.76 | ||||||||
2010 | 41.52 | 35.50 | 49.29 | 59.73 | 65.40 | a | 81.40 | 86.39 | 84.00 | 80.77 | 66.16 | 50.43 | 45.80 | f | 63.69 | a | ||||||||||
2011 | 39.19 | 38.07 | 53.94 | 60.43 | 63.87 | 80.43 | 88.61 | 88.50 | a | 74.23 | 63.84 | 52.53 | 38.45 | 61.84 | ||||||||||||
2012 | 45.77 | 35.32 | a | 59.87 | 64.37 | 71.59 | b | 87.60 | 91.16 | 86.32 | 77.07 | 60.23 | a | 58.27 | 41.64 | c | 64.93 | |||||||||
2013 | 40.77 | a | 40.61 | 48.24 | b | 53.21 | b | 69.00 | 83.93 | 83.40 | a | 84.45 | 76.86 | a | 59.24 | b | 50.40 | 40.29 | 60.87 | |||||||
2014 | 40.15 | d | 36.95 | i | 50.68 | 57.46 | b | 68.77 | 83.20 | y | 84.68 | f | 81.53 | a | 75.30 | 65.35 | 46.83 | 40.61 | 58.52 | c | ||||||
2015 | 42.97 | a | 42.61 | 51.72 | b | 60.90 | 61.19 | 78.87 | 83.07 | a | 84.03 | b | 81.63 | 65.68 | 49.83 | a | 40.10 | 61.88 | ||||||||
2016 | 41.94 | 46.96 | a | 53.61 | 57.37 | 63.97 | 83.60 | 87.65 | 82.45 | 78.00 | c | 70.77 | 56.90 | a | 38.06 | 63.44 | ||||||||||
2017 | 38.97 | 51.30 | a | 59.07 | b | 58.07 | 65.19 | 81.61 | b | 86.60 | f | 79.74 | 76.31 | a | 61.71 | 57.70 | 43.85 | d | 61.23 | a | ||||||
2018 | 45.90 | 41.50 | 54.82 | c | 58.47 | 74.84 | 86.69 | a | 85.27 | i | 84.35 | 82.93 | 62.28 | f | 47.90 | a | 43.50 | k | 64.16 | c | ||||||
2019 | 41.58 | 39.96 | a | 47.10 | 60.50 | d | 61.42 | e | 77.04 | c | 87.87 | a | 86.14 | b | 82.10 | a | 58.32 | 48.60 | 44.61 | 61.27 | ||||||
2020 | 45.12 | o | 40.07 | a | 56.47 | a | 58.92 | d | 73.45 | b | 87.45 | a | 87.80 | a | 89.45 | 75.67 | 63.70 | h | 55.40 | 41.06 | 66.57 | b | ||||
2021 | 40.29 | 34.21 | 47.17 | a | 55.97 | 64.65 | 82.23 | 88.69 | b | 90.61 | m | 80.17 | x | 66.19 | 58.07 | a | 51.35 | h | 59.72 | c | ||||||
2022 | 43.73 | a | 39.64 | c | 50.59 | b | 61.40 | 70.29 | j | 82.27 | 88.26 | 86.87 | a | 81.53 | o | 66.30 | h | 48.17 | a | 41.17 | a | 60.23 | c | |||
2023 | 31.97 | 38.59 | a | 45.77 | 59.57 | 69.03 | 75.07 | a | 84.50 | a | 83.90 | 80.57 | 65.53 | a | 53.19 | c | 46.16 | 61.15 | ||||||||
2024 | 39.84 | l | 48.93 | 52.29 | g | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 48.93 | k | |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 40.70 | 41.77 | 51.10 | 59.01 | 68.28 | 81.12 | 86.97 | 84.04 | 76.05 | 62.53 | 50.26 | 41.03 | 61.72 | |||||||||||||
S.D. | 4.84 | 4.69 | 4.39 | 2.75 | 4.07 | 4.08 | 2.88 | 2.84 | 3.81 | 4.80 | 5.59 | 3.01 | 1.60 | |||||||||||||
SKEW | -0.81 | 0.47 | 0.19 | 0.11 | 0.05 | -0.08 | -0.24 | -0.00 | 0.27 | -0.45 | -0.79 | -0.15 | 0.88 | |||||||||||||
MAX | 50.79 | 51.30 | 59.87 | 64.37 | 75.07 | 87.60 | 92.78 | 89.45 | 82.93 | 70.77 | 58.27 | 46.37 | 64.93 | |||||||||||||
MIN | 26.84 | 34.21 | 41.61 | 53.21 | 61.19 | 74.30 | 81.48 | 79.07 | 69.92 | 51.23 | 34.79 | 33.79 | 59.76 | |||||||||||||
YRS | 24 | 23 | 23 | 25 | 23 | 22 | 24 | 25 | 22 | 22 | 26 | 20 | 9 |