YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1939 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 77.80 | 59.87 | a | 46.53 | 38.52 | 55.68 | h | |||
1940 | 17.87 | a | 29.34 | 33.14 | b | 52.90 | a | 66.59 | b | 78.97 | 84.00 | ----- | z | 74.48 | a | 63.71 | 39.52 | a | 31.33 | a | 51.99 | a | ||||
1941 | 26.97 | 29.04 | d | 36.39 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 30.80 | i | ||
1942 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 76.53 | 81.53 | a | 80.03 | 67.87 | 60.94 | 43.83 | 23.30 | d | 62.00 | e | |||||
1943 | 21.31 | e | 30.85 | a | 35.68 | 55.33 | 66.45 | 80.50 | 83.97 | 81.45 | 67.67 | 59.74 | 39.31 | a | 34.19 | 54.70 | ||||||||||
1944 | 36.32 | 34.10 | 35.97 | a | ----- | z | ----- | z | ----- | z | ----- | z | 81.65 | ----- | z | ----- | z | ----- | z | ----- | z | 47.01 | h | |||
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 | 84.90 | a | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 84.90 | k |
1950 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 75.83 | a | ----- | z | ----- | z | ----- | z | ----- | z | 75.83 | k |
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 | 26.36 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 26.36 | k | |
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 | 29.57 | c | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 33.29 | 31.43 | j | |
1968 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 77.77 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 77.77 | k | |
1969 | ----- | z | ----- | z | ----- | z | 58.63 | ----- | z | ----- | z | ----- | z | ----- | z | 73.17 | ----- | z | 43.00 | 29.06 | 50.97 | h | ||||
1970 | 17.67 | a | 31.46 | 37.68 | ----- | z | 70.94 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 41.93 | ----- | z | 39.94 | g | ||||
1971 | 19.39 | 26.50 | 37.00 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 74.80 | ----- | z | ----- | z | ----- | z | 39.42 | h | ||||
1972 | 22.57 | c | 25.24 | 37.26 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 28.36 | i | ||
1973 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1974 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 80.61 | ----- | z | ----- | z | ----- | z | ----- | z | 80.61 | k | |
1975 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1976 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 86.72 | b | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 86.72 | k |
1977 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 79.79 | a | 86.55 | 78.47 | a | ----- | z | ----- | z | ----- | z | ----- | z | 81.60 | i | |
1978 | 17.45 | 21.32 | ----- | z | ----- | z | 72.16 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 36.98 | i | |||
1979 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 41.57 | ----- | z | 41.57 | k | |
1980 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1981 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 78.77 | ----- | z | ----- | z | 46.60 | 27.97 | 51.11 | i | |||
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 | 48.43 | a | 64.07 | b | 70.83 | a | 75.61 | g | 82.77 | a | 83.29 | 69.17 | 63.90 | 45.50 | 23.84 | 61.31 | c | |||||
2011 | 21.42 | 29.52 | a | 39.47 | a | 53.73 | 68.10 | a | 78.13 | 85.65 | 79.77 | 68.30 | 61.84 | 46.73 | 34.80 | a | 55.62 | |||||||||
2012 | 34.09 | h | 35.64 | a | 60.50 | e | 60.20 | 74.04 | f | 81.88 | e | 89.50 | a | 80.67 | a | 73.34 | a | 57.42 | 45.63 | 32.97 | 61.78 | b | ||||
2013 | 27.32 | f | 28.00 | 33.27 | e | 49.14 | b | 68.52 | 75.70 | 81.43 | a | 80.17 | b | 75.96 | c | 56.48 | f | 41.76 | i | 23.29 | 57.28 | c | ||||
2014 | 17.32 | f | 19.08 | d | 35.48 | 53.73 | h | 67.77 | a | 78.23 | d | 76.29 | 81.07 | d | 70.88 | e | 58.00 | e | 35.22 | g | 32.14 | j | 60.85 | d | ||
2015 | 25.84 | f | 18.76 | c | 44.79 | g | 62.08 | d | 71.12 | g | 79.46 | f | 80.70 | h | 79.68 | i | 76.29 | i | 61.62 | j | 46.04 | e | 38.95 | l | 42.29 | i |
2016 | 25.11 | d | 35.67 | q | 49.41 | i | 55.69 | n | 68.91 | i | 79.45 | h | 83.95 | i | 80.90 | j | 71.28 | l | 62.83 | h | 53.38 | i | 27.85 | k | 25.11 | k |
2017 | 28.74 | l | 40.00 | h | 40.71 | 58.57 | i | 65.21 | c | 78.91 | h | 83.32 | 76.84 | 75.48 | a | 59.52 | 41.30 | 28.58 | 58.87 | d | ||||||
2018 | 22.18 | i | 30.29 | 42.10 | 47.57 | 75.52 | 80.96 | c | 81.55 | 80.42 | 71.67 | 54.86 | b | 35.80 | 32.84 | 57.60 | a | |||||||||
2019 | 24.87 | 25.75 | 35.74 | 52.80 | 61.90 | 74.41 | a | 82.35 | 77.61 | 71.93 | 53.69 | b | 35.23 | 32.81 | 52.43 | |||||||||||
2020 | 30.32 | 30.59 | 43.39 | 52.79 | a | 64.87 | 78.81 | d | 83.84 | 80.46 | c | 66.03 | a | 50.17 | b | 47.74 | c | 32.65 | 55.14 | |||||||
2021 | 28.16 | 21.35 | b | 47.41 | b | 55.41 | c | 66.68 | f | 82.30 | g | 80.84 | 79.19 | e | 73.59 | h | 61.68 | f | 43.89 | b | 35.37 | d | 48.95 | d | ||
2022 | 20.63 | a | 25.88 | b | 39.27 | a | 49.10 | a | 67.96 | h | 78.14 | a | 81.00 | b | 78.29 | 72.13 | g | 56.03 | b | 41.35 | d | 26.80 | a | 49.65 | b | |
2023 | 28.60 | a | 31.32 | 39.45 | 55.54 | d | 70.04 | c | 80.39 | b | 80.65 | 80.24 | b | 72.28 | e | 56.12 | e | 43.58 | f | 38.44 | f | 59.46 | b | |||
2024 | 26.93 | b | 42.48 | 44.75 | g | 51.91 | h | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 34.71 | j | |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 24.42 | 28.23 | 39.91 | 54.95 | 68.38 | 78.59 | 83.16 | 79.73 | 71.93 | 58.27 | 42.86 | 30.68 | 54.47 | |||||||||||||
S.D. | 5.28 | 5.61 | 6.52 | 4.91 | 3.56 | 2.08 | 2.95 | 1.78 | 3.40 | 3.88 | 3.70 | 4.50 | 1.42 | |||||||||||||
SKEW | 0.44 | 0.37 | 1.82 | 0.33 | 0.18 | -0.38 | -0.04 | -0.37 | -0.11 | -0.38 | -0.65 | -0.33 | -0.92 | |||||||||||||
MAX | 36.32 | 42.48 | 60.50 | 64.07 | 75.52 | 81.88 | 89.50 | 83.29 | 77.80 | 63.90 | 47.74 | 38.52 | 55.62 | |||||||||||||
MIN | 17.45 | 18.76 | 33.14 | 47.57 | 61.90 | 74.41 | 76.29 | 75.83 | 66.03 | 50.17 | 35.23 | 23.29 | 52.43 | |||||||||||||
YRS | 17 | 21 | 19 | 14 | 13 | 14 | 18 | 19 | 16 | 14 | 18 | 17 | 4 |