YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1939 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 66.22 | 51.17 | b | 37.73 | 31.66 | 46.70 | h | |||
1940 | 11.98 | b | 22.88 | 27.19 | b | 43.55 | b | 57.27 | c | 69.48 | 74.92 | ----- | z | 65.19 | a | 54.34 | 32.86 | b | 25.63 | a | 44.12 | a | ||||
1941 | 20.89 | 21.05 | h | 29.19 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 25.04 | j | ||
1942 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 68.35 | 72.21 | b | 71.19 | 60.47 | 50.89 | 36.48 | 16.69 | g | 59.93 | f | |||||
1943 | 12.45 | i | 21.30 | a | 26.98 | 46.05 | 57.60 | 72.88 | 75.35 | 73.08 | 59.43 | 50.08 | 33.12 | b | 25.48 | 49.22 | a | |||||||||
1944 | 27.76 | 25.12 | 29.26 | b | ----- | z | ----- | z | ----- | z | ----- | z | 72.44 | ----- | z | ----- | z | ----- | z | ----- | z | 38.64 | 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 | 76.12 | a | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 76.12 | k |
1950 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 67.32 | a | ----- | z | ----- | z | ----- | z | ----- | z | 67.32 | 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 | 16.23 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 16.23 | 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 | 21.85 | d | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 25.87 | 23.86 | j | |
1968 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 68.77 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 68.77 | k | |
1969 | ----- | z | ----- | z | ----- | z | 49.92 | ----- | z | ----- | z | ----- | z | ----- | z | 63.75 | ----- | z | 35.43 | 23.69 | b | 43.20 | h | |||
1970 | 9.83 | a | 21.25 | 29.90 | ----- | z | 61.29 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 36.22 | ----- | z | 31.70 | g | ||||
1971 | 9.76 | 18.88 | 29.39 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 65.25 | ----- | z | ----- | z | ----- | z | 30.82 | h | ||||
1972 | 12.52 | e | 16.46 | a | 28.77 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 19.25 | i | |
1973 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1974 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 70.73 | ----- | z | ----- | z | ----- | z | ----- | z | 70.73 | k | |
1975 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1976 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 75.50 | c | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 75.50 | k |
1977 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 69.71 | a | 76.90 | 69.18 | a | ----- | z | ----- | z | ----- | z | ----- | z | 71.93 | i | |
1978 | 8.32 | 11.23 | ----- | z | ----- | z | 61.75 | a | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 27.10 | i | ||
1979 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 35.23 | ----- | z | 35.23 | k | |
1980 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1981 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 71.27 | ----- | z | ----- | z | 39.68 | 21.35 | a | 44.10 | 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 | 40.33 | a | 55.30 | b | 61.87 | a | 68.70 | g | 75.77 | a | 75.94 | 62.25 | 55.37 | 38.42 | 18.35 | 53.73 | c | |||||
2011 | 15.44 | 22.30 | a | 32.65 | a | 46.85 | 60.13 | a | 70.00 | 78.40 | 73.02 | 61.50 | 54.50 | 41.00 | 29.42 | a | 48.77 | |||||||||
2012 | 27.11 | h | 29.86 | a | 51.90 | e | 51.63 | 64.32 | f | 72.62 | e | 80.27 | a | 71.78 | a | 62.97 | a | 49.92 | 39.00 | 27.87 | 53.78 | b | ||||
2013 | 20.22 | f | 21.48 | 27.00 | e | 42.54 | b | 59.81 | 68.68 | 73.97 | a | 72.14 | b | 67.28 | c | 50.24 | f | 35.31 | i | 16.53 | 49.94 | c | ||||
2014 | 8.84 | f | 10.83 | d | 28.16 | 45.86 | h | 59.50 | a | 71.23 | d | 70.39 | 73.13 | d | 63.02 | f | 51.33 | e | 30.07 | g | 28.02 | j | 52.08 | e | ||
2015 | 19.92 | f | 10.21 | d | 35.31 | g | 52.02 | d | 62.21 | g | 70.54 | f | 72.35 | h | 71.30 | i | 68.71 | i | 53.79 | j | 39.46 | e | 34.92 | l | 33.90 | i |
2016 | 19.04 | d | 30.08 | q | 41.09 | i | 49.75 | n | 61.20 | i | 71.89 | h | 76.80 | i | 73.48 | j | 64.78 | l | 56.72 | h | 47.17 | j | 24.10 | k | 19.04 | k |
2017 | 24.29 | l | 33.05 | h | 34.95 | 52.17 | i | 58.34 | c | 71.16 | h | 75.56 | 69.97 | 67.97 | a | 54.27 | 36.27 | 23.79 | 52.64 | d | ||||||
2018 | 16.64 | i | 22.55 | 36.08 | 39.90 | 67.24 | 73.81 | d | 74.84 | 73.65 | 65.72 | 48.69 | b | 31.92 | 29.62 | a | 51.27 | a | ||||||||
2019 | 18.85 | 16.66 | 28.85 | 46.85 | 55.68 | 68.28 | c | 75.71 | 70.76 | 66.12 | 48.32 | c | 31.05 | 27.45 | 46.22 | |||||||||||
2020 | 24.40 | a | 23.02 | c | 38.21 | 44.62 | b | 58.26 | 71.00 | d | 76.85 | 73.20 | c | 60.29 | a | 44.64 | c | 40.40 | d | 27.42 | 48.53 | |||||
2021 | 23.60 | 13.68 | c | 40.43 | b | 48.26 | e | 61.00 | n | 74.80 | j | 74.40 | g | 72.65 | g | 66.50 | m | 56.41 | h | 37.81 | d | 28.98 | g | 32.76 | g | |
2022 | 12.20 | a | 18.02 | f | 33.42 | a | 42.76 | a | 60.00 | k | 70.77 | b | 74.07 | b | 71.68 | 65.26 | g | 49.67 | b | 35.71 | d | 21.43 | a | 45.75 | c | |
2023 | 24.44 | d | 24.09 | a | 33.15 | 47.28 | g | 62.00 | c | 72.69 | c | 72.60 | 72.79 | b | 66.42 | f | 51.10 | e | 37.92 | f | 35.15 | k | 51.61 | d | ||
2024 | 23.31 | b | 35.07 | 37.80 | h | 46.12 | f | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 29.19 | j | |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 17.76 | 20.16 | 32.94 | 46.94 | 60.06 | 70.59 | 75.26 | 71.85 | 63.89 | 51.02 | 36.54 | 25.04 | 47.84 | |||||||||||||
S.D. | 6.30 | 6.40 | 6.34 | 4.40 | 2.92 | 1.85 | 2.31 | 1.91 | 2.76 | 2.91 | 2.93 | 4.24 | 1.41 | |||||||||||||
SKEW | -0.09 | 0.33 | 1.53 | 0.29 | 0.90 | 0.31 | -0.01 | -0.33 | -0.20 | -0.33 | -0.32 | -0.48 | -0.68 | |||||||||||||
MAX | 27.76 | 35.07 | 51.90 | 55.30 | 67.24 | 73.81 | 80.27 | 75.94 | 67.97 | 55.37 | 41.00 | 31.66 | 48.77 | |||||||||||||
MIN | 8.32 | 10.21 | 26.98 | 39.90 | 55.68 | 68.28 | 70.39 | 67.32 | 59.43 | 44.64 | 31.05 | 16.53 | 46.22 | |||||||||||||
YRS | 16 | 19 | 19 | 13 | 13 | 14 | 17 | 18 | 14 | 14 | 18 | 15 | 3 |