YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1949 | 27.52 | h | 37.54 | 44.61 | 57.40 | 61.52 | 73.07 | 79.35 | 77.00 | 76.93 | 59.61 | 55.13 | 42.68 | 60.44 | a | |||||||||||
1950 | 38.52 | 47.00 | 50.39 | 60.93 | 65.77 | 75.31 | a | 81.13 | 77.97 | 68.87 | 67.58 | 56.37 | 50.61 | 61.70 | ||||||||||||
1951 | 42.84 | ----- | z | ----- | z | 59.30 | 73.10 | b | 80.77 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 64.00 | h | |||
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 | 56.84 | 75.57 | 80.19 | ----- | z | 71.97 | a | 61.77 | 54.17 | 50.81 | 64.47 | e | ||||||
1981 | 45.13 | 47.07 | 44.06 | 60.33 | 64.74 | 80.47 | 84.48 | 80.60 | a | 71.24 | e | 54.94 | 54.59 | a | 50.13 | 61.48 | ||||||||||
1982 | 41.93 | d | 44.43 | 44.42 | 54.57 | b | 63.36 | c | 72.70 | 77.31 | b | 76.27 | a | 67.96 | b | 56.21 | c | 45.80 | 40.32 | 57.11 | ||||||
1983 | 43.39 | 42.64 | 45.26 | 47.64 | b | 64.74 | 74.80 | 80.93 | b | 74.68 | 73.93 | 59.37 | a | 49.43 | 45.90 | 58.56 | ||||||||||
1984 | 44.68 | 46.66 | 52.23 | 56.07 | 74.90 | 74.90 | 76.68 | 75.42 | 73.15 | c | 55.60 | a | 49.53 | 37.16 | 59.75 | |||||||||||
1985 | 39.42 | 42.96 | 47.58 | 63.87 | 69.77 | 80.17 | a | 82.87 | 83.52 | 67.87 | 60.26 | 47.20 | 44.57 | a | 60.84 | |||||||||||
1986 | 50.21 | b | 46.11 | a | 53.13 | a | 58.30 | 71.28 | b | 80.83 | a | 81.03 | b | 83.35 | 68.60 | 58.81 | 52.60 | 43.45 | b | 62.31 | ||||||
1987 | 43.07 | b | 42.93 | 47.06 | 63.21 | a | 63.94 | 78.87 | 80.10 | a | 81.03 | a | 74.93 | a | 65.37 | a | 49.57 | 43.00 | a | 61.09 | ||||||
1988 | 46.03 | 52.54 | a | 54.37 | a | 57.23 | 69.68 | 78.57 | 87.55 | 79.58 | 73.67 | 71.61 | 53.57 | 45.29 | 64.14 | |||||||||||
1989 | 41.66 | b | 46.46 | b | 59.00 | a | 68.13 | 67.48 | 77.90 | a | 87.03 | 78.35 | 73.40 | 63.00 | 58.63 | 53.19 | 64.52 | |||||||||
1990 | 46.42 | 43.93 | 56.22 | h | 58.47 | 63.54 | e | 77.23 | 81.13 | 78.10 | 72.37 | 66.45 | 54.17 | 42.00 | 62.16 | a | ||||||||||
1991 | 44.35 | 52.79 | 42.03 | 55.10 | 60.61 | 70.63 | 80.23 | 77.77 | 72.13 | 66.43 | a | 53.03 | 44.52 | 59.97 | ||||||||||||
1992 | 45.71 | 45.90 | 47.26 | 62.20 | 67.03 | 72.10 | 75.97 | 78.94 | 75.27 | 64.81 | 49.53 | 40.47 | a | 60.43 | ||||||||||||
1993 | 41.26 | 39.96 | 49.52 | 57.80 | 66.42 | 71.66 | a | 79.00 | 78.13 | 73.90 | 63.81 | 49.83 | 46.94 | 59.85 | ||||||||||||
1994 | 50.35 | 41.68 | 53.20 | a | 56.80 | 63.35 | 79.70 | 82.81 | 81.81 | 73.43 | 59.94 | 44.67 | ----- | z | 62.52 | a | ||||||||||
1995 | 40.45 | 53.68 | 46.00 | a | 54.20 | 57.32 | 69.00 | c | 80.27 | a | 80.14 | b | 76.59 | a | 67.10 | 61.07 | a | 47.61 | 61.12 | |||||||
1996 | 49.77 | a | 49.34 | 51.26 | 59.62 | a | 67.83 | b | 77.17 | a | 82.71 | 81.34 | b | 72.47 | 61.97 | 53.57 | 47.90 | 62.91 | ||||||||
1997 | 44.90 | a | 46.50 | 58.45 | 55.13 | 70.74 | 73.46 | b | 79.10 | 80.55 | 71.50 | 61.71 | 53.10 | 42.97 | 61.51 | |||||||||||
1998 | 47.03 | 42.43 | 48.84 | 49.76 | a | 58.42 | 68.60 | 82.29 | 81.74 | 67.60 | 57.71 | 51.03 | 45.77 | 58.44 | ||||||||||||
1999 | 49.13 | 47.52 | a | 51.40 | a | 47.43 | 62.10 | a | 72.37 | 75.26 | 75.97 | a | 70.97 | 67.50 | c | 58.24 | a | 47.35 | e | 60.44 | ||||||
2000 | 46.66 | b | 45.48 | 46.83 | a | 58.87 | 68.73 | a | 75.00 | 79.33 | a | 77.86 | c | 72.17 | 55.57 | a | 44.67 | 50.10 | a | 60.11 | ||||||
2001 | 41.48 | 41.11 | 50.10 | a | 53.07 | 71.31 | b | 76.77 | 76.33 | a | 79.70 | a | 74.83 | a | 67.32 | 51.13 | 44.14 | c | 60.61 | |||||||
2002 | 45.00 | b | 48.73 | b | 48.20 | a | 59.32 | b | 64.75 | c | 78.27 | 82.57 | c | 81.52 | b | 72.24 | a | 58.10 | a | 48.31 | a | 37.83 | a | 60.40 | ||
2003 | 48.57 | a | 39.36 | 47.42 | 47.76 | a | 59.13 | 73.14 | b | 81.83 | a | 75.68 | 74.80 | 71.94 | 48.66 | a | 42.71 | j | 60.75 | a | ||||||
2004 | 42.83 | a | 39.34 | 58.31 | b | 55.77 | 65.90 | a | 75.20 | 78.97 | 76.69 | b | 71.69 | a | 56.73 | a | 44.90 | 44.65 | 59.25 | |||||||
2005 | 42.17 | a | 40.18 | 48.47 | a | 52.50 | 63.00 | 70.33 | 81.35 | 74.13 | 69.30 | 59.65 | 55.80 | 46.77 | 58.64 | |||||||||||
2006 | 44.26 | 46.61 | 41.58 | 52.83 | a | 67.29 | 76.43 | 79.23 | 77.71 | 69.53 | 58.06 | 53.77 | 45.90 | 59.43 | ||||||||||||
2007 | 41.90 | 46.85 | a | 52.87 | 56.63 | 67.00 | 76.33 | c | 82.77 | a | 77.73 | a | 68.13 | 60.68 | 57.23 | 41.32 | 60.79 | |||||||||
2008 | 38.74 | 44.38 | 50.90 | a | 55.60 | 60.19 | 75.50 | 78.55 | 79.65 | 71.73 | 63.10 | 54.07 | 42.71 | 59.59 | ||||||||||||
2009 | 47.83 | a | 40.61 | 48.61 | 53.43 | 69.61 | 66.47 | 80.13 | 77.32 | 74.40 | 57.52 | 53.53 | 40.10 | 59.13 | ||||||||||||
2010 | 42.71 | 40.79 | 47.32 | 50.27 | 57.16 | 74.40 | 80.35 | 77.71 | 74.40 | 58.87 | 49.13 | 45.87 | 58.25 | |||||||||||||
2011 | 45.42 | 41.57 | 49.16 | 55.70 | 58.77 | 71.40 | 76.74 | 79.81 | 70.67 | 61.97 | 49.33 | 42.84 | 58.62 | |||||||||||||
2012 | 50.13 | 44.86 | 51.26 | 57.03 | 68.16 | 75.93 | 77.29 | 77.26 | 71.63 | 63.97 | 52.50 | 42.23 | 61.02 | |||||||||||||
2013 | 40.87 | 44.14 | 54.39 | 58.23 | 65.90 | 78.80 | 79.48 | 77.52 | 68.27 | 57.71 | 49.60 | 43.16 | 59.84 | |||||||||||||
2014 | 51.52 | 49.25 | 51.58 | 57.17 | 65.32 | 76.67 | 78.94 | 75.19 | 73.07 | 66.71 | 55.03 | 43.58 | 62.00 | |||||||||||||
2015 | 46.94 | 53.93 | 55.32 | 56.17 | 59.19 | 77.33 | 76.13 | 78.90 | 74.43 | 60.87 | 47.20 | 43.71 | 60.84 | |||||||||||||
2016 | 41.23 | 53.24 | 53.37 | a | 55.53 | 59.52 | 79.53 | 81.45 | 77.58 | 71.77 | 63.74 | 53.60 | 43.48 | 61.17 | ||||||||||||
2017 | 37.00 | a | 44.54 | 55.03 | a | 57.40 | 64.42 | 79.37 | 82.32 | 76.06 | 67.67 | 65.03 | 57.93 | 51.77 | 61.55 | |||||||||||
2018 | 49.45 | 45.19 | a | 47.23 | 61.03 | 63.42 | 78.13 | 79.32 | 79.67 | a | 74.13 | 58.10 | 53.63 | 44.00 | 61.11 | |||||||||||
2019 | 43.03 | 36.29 | 46.65 | 57.90 | 54.94 | 71.97 | 79.45 | 80.87 | 72.20 | 62.07 | a | 52.63 | 42.03 | a | 58.34 | |||||||||||
2020 | 47.48 | 47.72 | 45.74 | 55.93 | 68.06 | 74.83 | 81.48 | 84.00 | a | 76.40 | 69.16 | 51.60 | 46.23 | 62.39 | ||||||||||||
2021 | 43.42 | 47.96 | 45.81 | 59.50 | 65.70 | a | 78.14 | b | 79.89 | c | 78.61 | 74.52 | a | 57.03 | a | 57.69 | a | 43.67 | a | 61.00 | ||||||
2022 | 44.81 | 46.81 | b | 53.37 | a | 58.87 | 66.13 | 73.70 | c | 79.07 | b | 74.19 | 72.80 | 61.59 | b | 45.92 | f | 41.52 | 61.17 | a | ||||||
2023 | 36.48 | 35.85 | a | 39.08 | g | 54.70 | 61.67 | d | 67.57 | 85.16 | 75.12 | e | 69.93 | b | 61.48 | d | 48.50 | 46.45 | 58.45 | a | ||||||
2024 | 42.94 | 37.31 | 41.22 | d | 54.12 | e | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 43.90 | h | ||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 44.33 | 44.83 | 49.56 | 56.57 | 64.68 | 75.26 | 80.34 | 78.51 | 72.16 | 61.92 | 52.12 | 44.70 | 60.52 | |||||||||||||
S.D. | 3.66 | 4.53 | 4.38 | 4.12 | 4.57 | 3.62 | 2.68 | 2.48 | 2.53 | 4.30 | 3.94 | 3.51 | 1.58 | |||||||||||||
SKEW | -0.00 | 0.09 | 0.22 | -0.06 | -0.07 | -0.49 | 0.49 | 0.27 | -0.23 | 0.44 | -0.01 | 0.36 | 0.32 | |||||||||||||
MAX | 51.52 | 53.93 | 59.00 | 68.13 | 74.90 | 80.83 | 87.55 | 84.00 | 76.93 | 71.94 | 61.07 | 53.19 | 64.52 | |||||||||||||
MIN | 36.48 | 35.85 | 41.22 | 47.43 | 54.94 | 66.47 | 75.26 | 74.13 | 67.60 | 54.94 | 44.67 | 37.16 | 57.11 | |||||||||||||
YRS | 46 | 46 | 44 | 47 | 47 | 47 | 46 | 45 | 46 | 46 | 45 | 44 | 39 |