YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
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 | 15.71 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 15.71 | k | |
1969 | ----- | z | ----- | z | ----- | z | 47.93 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 44.35 | ----- | z | ----- | z | 46.14 | j | ||
1970 | 4.00 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 71.81 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 37.90 | j | ||
1971 | ----- | z | 16.46 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 17.40 | 16.93 | j | ||
1972 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 66.43 | 68.53 | ----- | z | ----- | z | ----- | z | 31.17 | a | 10.11 | h | 55.38 | i | ||
1973 | ----- | z | ----- | z | ----- | z | 43.61 | b | ----- | z | 68.07 | g | 69.87 | h | ----- | z | ----- | z | 52.40 | e | ----- | z | ----- | z | 48.01 | j |
1974 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 74.12 | f | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1975 | ----- | z | ----- | z | 20.86 | j | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1976 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 71.38 | g | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1977 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 13.63 | a | 13.63 | k |
1978 | ----- | z | ----- | z | ----- | z | ----- | z | 58.50 | i | ----- | z | 68.64 | f | ----- | z | ----- | z | ----- | z | 19.85 | q | ----- | z | ----- | z |
1979 | ----- | z | ----- | z | ----- | z | ----- | z | 53.15 | a | ----- | z | ----- | z | ----- | z | 60.47 | a | ----- | z | ----- | z | ----- | z | 56.81 | j |
1980 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 67.65 | g | ----- | z | 69.34 | b | ----- | z | ----- | z | ----- | z | ----- | z | 69.34 | k |
1981 | ----- | z | ----- | z | 34.47 | b | 49.48 | d | 54.45 | k | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 41.97 | j |
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 | 17.22 | m | ----- | z |
1993 | 11.85 | h | 14.79 | b | 27.33 | b | 43.40 | 56.40 | 65.80 | 70.61 | 69.60 | b | 55.60 | 46.11 | 30.78 | 20.71 | 45.56 | a | ||||||||
1994 | 3.98 | a | 12.39 | a | 34.84 | 45.95 | a | 61.42 | 70.60 | 68.40 | 65.89 | 64.00 | 51.72 | a | 36.93 | b | 24.81 | 45.08 | ||||||||
1995 | 17.78 | a | 20.56 | a | 34.81 | j | 40.90 | 56.47 | 70.32 | 72.47 | 74.75 | a | 58.92 | 46.87 | a | 26.53 | 21.24 | b | 46.07 | a | ||||||
1996 | 9.45 | b | 19.50 | o | 26.88 | b | 40.32 | k | 55.03 | 69.32 | 69.02 | a | 68.40 | 60.02 | ----- | z | 24.68 | j | 15.48 | d | 46.70 | d | ||||
1997 | 10.80 | p | 19.75 | j | 31.71 | j | 43.54 | g | 51.35 | a | 70.31 | a | 71.47 | 67.79 | 62.57 | a | 49.95 | a | 27.33 | a | 25.93 | a | 53.34 | d | ||
1998 | 17.98 | d | 30.02 | a | 29.02 | b | 48.10 | 64.39 | 65.90 | a | 72.16 | 70.75 | a | 66.62 | b | 50.45 | a | 38.31 | c | 24.29 | b | 48.17 | ||||
1999 | 11.13 | a | 27.46 | 33.34 | 46.53 | a | 59.15 | 67.12 | 74.55 | 68.50 | a | 59.18 | 47.34 | c | 40.46 | b | 22.40 | b | 46.43 | |||||||
2000 | 14.63 | d | 26.60 | c | 39.63 | d | 45.30 | 59.93 | b | 66.12 | a | 70.42 | a | 70.18 | a | 59.94 | c | 52.17 | b | 29.45 | a | 4.88 | e | 44.94 | ||
2001 | 15.72 | b | 9.92 | b | 23.16 | b | 46.59 | c | 57.42 | a | 67.26 | a | 73.74 | ----- | z | 58.45 | a | 47.11 | c | 44.48 | d | 26.78 | b | 42.78 | a | |
2002 | 23.50 | b | 26.83 | b | 25.75 | c | 44.23 | 54.45 | a | 69.62 | a | 76.03 | b | 69.47 | a | 63.10 | d | 42.89 | i | 31.73 | d | 26.20 | h | 48.47 | b | |
2003 | 14.93 | h | 16.15 | d | 32.93 | h | 47.32 | 56.78 | b | 66.75 | 72.29 | c | 72.15 | a | 60.62 | b | 50.76 | b | 31.50 | 23.89 | 49.82 | b | ||||
2004 | 12.97 | b | 18.00 | a | 36.81 | b | 48.64 | a | 57.45 | b | 65.07 | 69.98 | b | 64.92 | a | 66.33 | a | 49.68 | 37.42 | 24.48 | b | 45.98 | ||||
2005 | 13.76 | b | 26.67 | a | 29.37 | a | 50.91 | c | 55.38 | b | 72.28 | 74.15 | a | 69.40 | a | 65.36 | b | 52.81 | b | 37.29 | a | 15.00 | 46.86 | |||
2006 | 26.67 | a | 18.67 | a | 32.75 | a | 50.84 | a | 59.93 | a | 68.80 | 75.53 | 70.80 | a | 58.00 | 45.60 | a | 35.47 | a | 28.38 | a | 47.62 | ||||
2007 | 17.78 | a | 9.94 | b | 36.63 | a | 45.22 | a | 63.45 | 70.18 | 72.53 | 71.38 | a | 64.05 | 53.60 | a | 33.82 | 15.36 | b | 46.16 | ||||||
2008 | 10.94 | 13.76 | 27.29 | 42.55 | 55.83 | b | 66.90 | 72.37 | 69.40 | a | 62.97 | 48.85 | a | 34.27 | 13.24 | 43.20 | ||||||||||
2009 | 6.73 | a | 20.91 | 31.87 | 44.65 | 57.65 | 65.62 | 66.82 | 66.90 | 64.62 | 42.76 | 41.62 | 15.69 | 43.82 | ||||||||||||
2010 | 8.05 | 11.41 | 36.13 | 53.30 | 59.02 | 67.63 | 73.53 | 74.68 | 60.23 | 52.61 | 34.53 | 14.08 | 45.43 | |||||||||||||
2011 | 8.60 | 16.95 | 28.53 | 44.63 | 57.11 | 68.72 | 76.77 | 70.53 | 59.63 | 52.13 | 36.20 | 25.65 | 45.45 | |||||||||||||
2012 | 22.31 | 27.02 | 47.77 | 48.83 | 63.58 | 70.72 | 77.53 | 69.95 | 61.32 | 46.39 | 36.72 | 22.53 | 49.56 | |||||||||||||
2013 | 16.31 | 18.04 | 24.55 | 39.37 | 56.97 | 68.25 | 72.13 | 70.71 | 65.62 | 48.39 | 30.66 | a | 13.48 | 43.70 | ||||||||||||
2014 | 8.53 | 7.79 | 24.97 | 43.65 | 57.39 | 69.02 | 68.10 | 70.92 | 61.81 | a | 47.97 | 24.83 | 24.13 | 42.42 | ||||||||||||
2015 | 17.56 | 10.64 | 32.82 | 47.97 | 58.73 | 68.10 | 70.82 | 67.68 | 67.42 | 51.45 | 39.98 | 27.71 | e | 46.74 | ||||||||||||
2016 | 15.10 | 25.48 | 39.35 | 48.00 | 58.74 | 70.10 | 72.00 | 70.92 | 65.05 | 51.45 | 43.72 | 18.60 | 48.21 | |||||||||||||
2017 | 20.19 | 28.89 | 30.92 | 47.32 | 57.06 | 69.12 | 72.72 | a | 66.53 | 65.62 | 50.24 | 32.72 | 18.31 | 46.64 | ||||||||||||
2018 | 13.95 | c | 13.38 | b | 29.79 | 32.78 | 65.48 | 72.50 | 71.15 | 70.76 | 64.93 | 44.11 | 25.92 | 24.65 | 44.12 | |||||||||||
2019 | 12.73 | 8.93 | a | 26.97 | 45.80 | 55.03 | b | 68.43 | a | 73.58 | 67.58 | 66.13 | 44.58 | 28.97 | a | 22.92 | 43.47 | |||||||||
2020 | 19.23 | 17.57 | 35.84 | 42.85 | 56.94 | 72.03 | 73.23 | 70.65 | 60.07 | 41.89 | 38.18 | 24.31 | 46.06 | |||||||||||||
2021 | 20.82 | 9.32 | 39.24 | 45.75 | 58.10 | 72.85 | 71.06 | 71.21 | 64.93 | 53.90 | 35.52 | 24.98 | 47.31 | |||||||||||||
2022 | 8.84 | 12.34 | 32.15 | 39.58 | 59.73 | 70.47 | 73.03 | 70.03 | a | 63.10 | 48.44 | 34.17 | 17.00 | 44.07 | ||||||||||||
2023 | 18.65 | 18.57 | 28.27 | 45.63 | 61.71 | 71.55 | 69.95 | 72.02 | 66.97 | 51.82 | 36.72 | 32.55 | b | 47.87 | ||||||||||||
2024 | 18.42 | 32.29 | 35.82 | 46.61 | g | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 28.85 | i | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 14.58 | 18.31 | 32.08 | 45.55 | 58.16 | 68.87 | 72.08 | 69.80 | 62.61 | 48.96 | 34.43 | 20.77 | 45.80 | |||||||||||||
S.D. | 5.62 | 7.17 | 5.53 | 3.92 | 3.20 | 2.19 | 2.48 | 2.21 | 3.08 | 3.33 | 5.05 | 5.85 | 1.84 | |||||||||||||
SKEW | -0.05 | 0.34 | 0.64 | -0.95 | 0.43 | 0.06 | 0.10 | 0.02 | -0.27 | -0.43 | -0.01 | -0.48 | 0.03 | |||||||||||||
MAX | 26.67 | 32.29 | 47.77 | 53.30 | 65.48 | 72.85 | 77.53 | 74.75 | 67.42 | 53.90 | 44.48 | 32.55 | 49.56 | |||||||||||||
MIN | 3.98 | 7.79 | 23.16 | 32.78 | 51.35 | 65.07 | 66.82 | 64.92 | 55.60 | 41.89 | 24.83 | 4.88 | 42.42 | |||||||||||||
YRS | 31 | 31 | 30 | 32 | 32 | 32 | 33 | 31 | 32 | 31 | 31 | 32 | 24 |