YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
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 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1971 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1972 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1973 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1974 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1975 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
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 | 44.45 | c | 50.57 | 63.02 | 74.55 | 74.50 | 76.08 | a | 66.31 | d | 53.87 | 38.48 | a | 35.10 | 57.69 | b | ||||||
1995 | 31.43 | a | 38.81 | a | 42.15 | 46.55 | b | 55.71 | 67.70 | 73.52 | 77.16 | 64.29 | b | 51.83 | d | 42.04 | d | 32.66 | c | 51.99 | ||||||
1996 | 28.30 | d | 36.10 | d | 39.20 | a | 52.24 | a | 63.41 | c | 71.27 | 74.66 | 72.59 | b | 64.21 | b | 55.15 | d | 37.68 | e | 31.48 | i | 54.07 | a | ||
1997 | 27.82 | i | 31.95 | h | 44.55 | c | 44.64 | a | 60.00 | a | 70.33 | a | 75.87 | 72.73 | a | 67.04 | c | 51.05 | b | 36.56 | d | 26.83 | b | 54.96 | b | |
1998 | 31.11 | c | 37.73 | 39.60 | b | 48.41 | a | 63.34 | b | 67.95 | 76.12 | a | 72.53 | 69.58 | 54.67 | b | 43.12 | 31.41 | d | 52.97 | ||||||
1999 | 34.82 | 40.43 | a | 44.00 | 48.94 | d | 58.77 | 68.50 | 76.44 | 74.66 | 63.12 | a | 51.97 | b | 45.28 | 33.74 | 53.39 | |||||||||
2000 | 33.48 | 38.91 | a | 44.38 | a | 52.63 | 62.82 | 70.28 | 76.82 | 77.17 | b | 65.72 | a | 53.10 | 33.88 | 27.79 | 53.08 | |||||||||
2001 | 26.98 | 31.09 | 40.95 | 54.18 | 60.58 | 71.22 | 78.17 | a | 74.44 | 65.77 | 52.37 | 43.20 | 32.40 | 52.61 | ||||||||||||
2002 | 30.66 | 32.46 | 37.89 | 54.00 | 60.55 | a | 75.40 | a | 78.13 | 75.38 | a | 66.05 | a | 48.30 | a | 39.18 | b | 31.65 | 52.47 | |||||||
2003 | 34.40 | 30.33 | a | 43.75 | a | 54.97 | 61.98 | 67.93 | 80.15 | 77.06 | 63.10 | 56.28 | a | 37.87 | 33.20 | a | 53.42 | |||||||||
2004 | 30.35 | 32.67 | 48.39 | 51.68 | 63.66 | 68.47 | 72.48 | 69.77 | 65.33 | 53.15 | 37.77 | 32.74 | 52.21 | |||||||||||||
2005 | 31.08 | 36.22 | a | 41.43 | a | 50.26 | a | 60.65 | 70.98 | 77.85 | 73.92 | 68.55 | 54.97 | a | 41.85 | c | 29.90 | 53.14 | ||||||||
2006 | 34.77 | 32.88 | 41.77 | 55.03 | 63.31 | 74.40 | 77.28 | a | 73.45 | 60.00 | 52.22 | b | 42.05 | 29.78 | a | 53.08 | ||||||||||
2007 | 13.84 | 23.30 | 46.53 | 48.13 | 60.73 | 68.82 | 75.30 | a | 77.08 | 67.24 | a | 54.33 | a | 40.66 | a | 26.66 | 50.22 | |||||||||
2008 | 27.34 | 31.48 | 41.97 | a | 48.67 | 60.10 | 70.78 | 77.29 | 72.31 | 63.63 | 53.07 | a | 42.85 | 29.28 | a | 51.56 | ||||||||||
2009 | 32.68 | 37.95 | 42.73 | 50.15 | 61.92 | 69.40 | 74.76 | 72.02 | a | 62.62 | 45.13 | 42.31 | a | 24.72 | a | 51.36 | ||||||||||
2010 | 29.39 | 29.71 | 40.98 | 52.13 | 59.19 | 73.34 | a | 76.34 | b | 75.12 | e | 68.93 | a | 54.88 | a | 39.67 | a | 34.02 | 52.81 | |||||||
2011 | 26.29 | 28.98 | 43.37 | 51.93 | 58.44 | 72.43 | 79.53 | 79.19 | 65.85 | 54.00 | 40.95 | 21.47 | 51.87 | |||||||||||||
2012 | 31.97 | 33.86 | a | 47.77 | 55.80 | 63.03 | 76.55 | 79.63 | 75.26 | 65.57 | 50.29 | 43.37 | 30.89 | 54.50 | ||||||||||||
2013 | 28.68 | a | 32.32 | 40.52 | b | 45.87 | 62.15 | 74.55 | 76.03 | a | 75.63 | a | 70.16 | a | 51.60 | a | 39.38 | 29.66 | 52.21 | |||||||
2014 | 28.02 | b | 27.71 | 42.00 | a | 51.25 | 62.00 | 73.10 | 75.68 | a | 73.23 | 66.52 | 55.34 | 36.35 | 30.73 | 51.83 | ||||||||||
2015 | 31.64 | b | 35.39 | 44.23 | 53.12 | a | 57.26 | 72.36 | a | 75.98 | 75.55 | b | 70.40 | a | 57.68 | a | 41.22 | 33.16 | 54.00 | |||||||
2016 | 31.03 | 37.53 | 44.61 | 51.25 | 58.29 | 74.23 | 77.48 | 72.76 | 68.08 | 57.06 | 45.12 | 26.31 | 53.65 | |||||||||||||
2017 | 28.79 | 41.07 | 47.68 | c | 52.95 | 62.29 | 74.17 | 75.61 | c | 70.61 | 65.45 | 52.81 | 44.03 | 31.60 | 53.92 | |||||||||||
2018 | 30.95 | b | 31.23 | 44.97 | 48.00 | a | 67.43 | b | 76.47 | 77.13 | 74.05 | 68.45 | 52.77 | 40.75 | 32.50 | b | 53.72 | |||||||||
2019 | 30.58 | 29.91 | 38.98 | 52.57 | 55.58 | 69.23 | 74.18 | a | 75.00 | c | 70.40 | 45.31 | 36.52 | 32.48 | 50.90 | |||||||||||
2020 | 31.73 | 29.41 | g | 45.42 | e | 48.81 | a | 63.87 | 74.50 | 76.73 | c | 76.52 | 63.34 | a | 48.69 | 43.17 | 28.68 | a | 54.68 | a | ||||||
2021 | 29.68 | 23.64 | 41.18 | a | 48.59 | b | 60.06 | 71.45 | 76.92 | 75.05 | 68.13 | 53.97 | 42.45 | 37.29 | 52.37 | |||||||||||
2022 | 28.73 | 30.13 | a | 39.65 | a | 51.65 | 61.13 | 71.48 | 79.12 | k | 71.29 | n | 67.63 | 53.34 | 35.82 | 23.11 | 46.27 | b | ||||||||
2023 | 28.53 | 29.39 | 37.81 | 48.35 | 62.26 | 68.03 | 75.60 | 75.13 | 67.55 | 53.15 | 41.33 | 33.98 | 51.76 | |||||||||||||
2024 | 25.81 | 37.72 | 40.70 | u | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 31.77 | j | ||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 29.76 | 33.18 | 42.76 | 50.78 | 61.12 | 71.66 | 76.42 | 74.53 | 66.30 | 52.75 | 40.50 | 30.47 | 52.60 | |||||||||||||
S.D. | 3.89 | 4.67 | 2.86 | 2.82 | 2.55 | 2.71 | 1.77 | 2.13 | 2.55 | 2.94 | 2.94 | 3.64 | 1.03 | |||||||||||||
SKEW | -2.30 | -0.22 | 0.15 | -0.21 | -0.22 | 0.14 | 0.09 | -0.15 | -0.30 | -0.99 | -0.40 | -0.68 | -0.29 | |||||||||||||
MAX | 34.82 | 41.07 | 48.39 | 55.80 | 67.43 | 76.55 | 80.15 | 79.19 | 70.40 | 57.68 | 45.28 | 37.29 | 54.50 | |||||||||||||
MIN | 13.84 | 23.30 | 37.81 | 44.64 | 55.58 | 67.70 | 72.48 | 69.77 | 60.00 | 45.13 | 33.88 | 21.47 | 50.22 | |||||||||||||
YRS | 29 | 28 | 30 | 30 | 30 | 30 | 29 | 29 | 30 | 30 | 30 | 29 | 25 |