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 | 60.64 | q | ----- | z | 53.28 | m | ----- | z |
1981 | 51.89 | d | 51.65 | b | 52.97 | b | 71.33 | 67.76 | b | 87.79 | a | 90.32 | c | 87.06 | 86.37 | 66.77 | a | 60.04 | b | 50.03 | 68.67 | |||||
1982 | 43.29 | 45.57 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 44.43 | j | ||
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 | 67.83 | 76.35 | 86.07 | 89.65 | 89.39 | 76.10 | 67.52 | 40.11 | b | 36.55 | 69.95 | c | ||||||||
1986 | 53.53 | a | 48.89 | 61.74 | 67.24 | a | 75.57 | a | 86.27 | 92.87 | h | 89.26 | h | 78.70 | g | 66.04 | c | 55.92 | f | 43.50 | a | 62.85 | d | |||
1987 | 45.89 | d | 50.90 | g | 53.86 | i | 69.50 | d | 75.42 | l | ----- | z | ----- | z | 80.71 | j | 77.70 | 68.06 | 52.63 | 42.76 | b | 59.42 | f | |||
1988 | 34.90 | 44.68 | a | 53.97 | 61.61 | b | 75.55 | b | 88.17 | 90.58 | 90.26 | 77.32 | e | 67.00 | 54.23 | 45.19 | 65.29 | |||||||||
1989 | 47.77 | 36.86 | 56.10 | 66.73 | 72.58 | 77.90 | 89.06 | 83.16 | 73.52 | a | 68.58 | 57.27 | 41.20 | a | 64.23 | |||||||||||
1990 | 44.55 | 40.82 | 51.93 | a | 62.73 | 69.48 | 87.70 | 85.68 | 87.03 | 83.63 | 69.42 | 57.13 | 37.23 | 64.78 | ||||||||||||
1991 | 37.81 | 55.59 | a | 55.03 | 62.70 | 73.16 | 85.14 | a | 87.60 | a | 83.90 | 77.53 | 67.45 | 44.60 | 42.23 | 64.40 | ||||||||||
1992 | 39.40 | a | 49.83 | 57.45 | 68.30 | 74.68 | 76.97 | 82.55 | 78.94 | 80.63 | 70.30 | a | 43.60 | 32.81 | 62.95 | |||||||||||
1993 | 33.03 | 35.50 | 51.71 | 59.77 | 71.42 | 80.60 | 83.48 | 82.32 | 73.43 | 63.29 | 45.40 | 44.81 | 60.40 | |||||||||||||
1994 | 44.10 | 37.68 | 58.45 | 62.60 | 76.81 | 86.70 | 85.73 | a | 89.81 | 84.00 | h | 67.37 | a | 46.04 | c | 47.45 | 63.88 | a | ||||||||
1995 | 43.45 | 52.92 | d | 56.20 | a | 59.67 | 63.83 | a | 79.25 | b | 89.73 | a | 89.80 | f | 78.17 | 67.23 | 55.53 | 46.00 | 62.91 | a | ||||||
1996 | 40.52 | 46.60 | d | 52.39 | 69.17 | 72.65 | 85.70 | 86.81 | 84.83 | g | 73.70 | 68.61 | 50.03 | 47.10 | 63.02 | a | ||||||||||
1997 | 40.57 | a | 43.12 | c | 59.55 | 57.50 | 73.45 | 84.63 | 91.45 | 86.23 | i | 79.47 | 65.19 | 49.70 | 39.35 | 62.18 | a | |||||||||
1998 | 43.26 | d | 48.04 | 50.81 | 60.03 | 76.97 | 80.48 | c | 86.58 | 84.68 | 86.07 | 67.55 | 55.03 | 45.06 | 65.38 | |||||||||||
1999 | 48.19 | 54.82 | 58.61 | 58.33 | 71.87 | 81.67 | 89.45 | 85.88 | f | 75.03 | 70.35 | 63.17 | 48.29 | 65.44 | a | |||||||||||
2000 | 43.94 | 54.27 | g | 55.61 | 68.03 | 77.23 | 84.07 | 90.81 | 91.29 | 82.90 | a | 66.42 | 43.33 | 40.90 | 67.68 | a | ||||||||||
2001 | 41.96 | d | 39.11 | 49.71 | j | 66.18 | b | 74.10 | a | 86.27 | 90.77 | 90.06 | 80.80 | 69.10 | 58.07 | 47.16 | 67.60 | a | ||||||||
2002 | 45.23 | 48.75 | 49.29 | 67.77 | 74.53 | a | 89.96 | f | 92.23 | a | 88.13 | 80.27 | 60.45 | 51.43 | 49.42 | 64.32 | a | |||||||||
2003 | 48.26 | 43.18 | 56.23 | 68.53 | 71.81 | 78.83 | 93.74 | 90.35 | 78.97 | 74.90 | 51.10 | 49.45 | 67.11 | |||||||||||||
2004 | 46.45 | 44.38 | 62.13 | 65.87 | 78.39 | 79.83 | 84.45 | 82.04 | f | 83.07 | 68.32 | 50.13 | 46.19 | 64.47 | a | |||||||||||
2005 | 43.19 | 50.43 | e | 56.07 | d | 63.83 | 74.61 | 84.63 | 91.06 | 86.16 | 84.00 | 67.87 | 58.03 | 44.74 | 67.05 | |||||||||||
2006 | 54.48 | 47.83 | e | 55.32 | 72.47 | 78.74 | 87.40 | 89.94 | 87.65 | 73.30 | 66.17 | a | 57.47 | 42.65 | 67.78 | |||||||||||
2007 | 29.29 | 36.57 | 61.54 | g | 59.30 | 76.56 | d | 82.93 | 90.06 | 90.81 | 84.17 | 69.81 | 57.27 | 37.58 | 64.94 | a | ||||||||||
2008 | 36.45 | 43.14 | 54.16 | 62.97 | a | 74.13 | a | 83.33 | 99.16 | 83.94 | 79.87 | 67.43 | a | 57.00 | 41.81 | 65.28 | ||||||||||
2009 | 47.81 | 52.71 | 56.68 | 59.50 | 70.61 | 79.43 | b | 86.03 | 87.54 | c | 78.23 | 54.19 | 57.00 | 36.26 | 63.83 | |||||||||||
2010 | 44.61 | c | 40.96 | 54.00 | 66.44 | c | 71.60 | a | 84.37 | 89.06 | 89.48 | 84.33 | 71.58 | 54.10 | 47.90 | 66.54 | ||||||||||
2011 | 40.48 | 41.68 | 57.35 | 63.50 | 69.06 | 85.03 | 93.90 | a | 91.94 | 79.57 | 68.97 | a | 55.27 | 42.68 | 65.79 | |||||||||||
2012 | 49.55 | 41.93 | 64.70 | h | 70.30 | 80.79 | b | 94.21 | a | 97.52 | 91.10 | 83.97 | a | 64.13 | a | 61.80 | 45.52 | 70.98 | a | |||||||
2013 | 46.26 | 45.07 | 51.65 | 56.57 | 74.03 | 89.45 | a | 88.47 | a | 88.90 | b | 82.90 | 63.13 | 55.00 | a | 43.03 | 65.37 | |||||||||
2014 | 44.80 | k | 50.00 | v | 55.67 | a | 63.33 | c | 72.97 | 82.53 | 87.23 | 88.16 | 80.45 | a | 71.36 | c | 52.20 | 43.84 | 69.77 | b | ||||||
2015 | 45.06 | 38.86 | n | 59.87 | 65.00 | 66.90 | 86.75 | j | 89.63 | a | 89.71 | 88.84 | e | 71.68 | 54.70 | 44.90 | a | 67.63 | b | |||||||
2016 | 46.69 | b | 50.78 | b | 61.00 | 63.63 | 69.69 | b | 89.97 | 91.00 | d | 89.34 | b | 82.67 | 78.03 | b | 63.87 | g | 41.19 | d | 69.45 | a | ||||
2017 | 38.31 | b | 55.48 | a | 63.31 | b | 65.72 | a | 70.55 | 87.75 | f | 91.64 | c | 84.21 | b | 80.47 | 66.11 | m | 59.27 | 46.18 | c | 65.51 | b | |||
2018 | 46.42 | 43.54 | 59.50 | a | 61.30 | 76.20 | a | 88.43 | 89.48 | 86.69 | e | 82.60 | 60.67 | a | 52.07 | a | 45.74 | 66.05 | ||||||||
2019 | 45.17 | a | 39.89 | 51.96 | d | 65.27 | 65.97 | 82.83 | 92.28 | b | 89.11 | c | 86.66 | a | 61.59 | b | 51.96 | d | 46.90 | a | 64.96 | |||||
2020 | 48.71 | c | 44.59 | 58.32 | c | 63.10 | a | 73.44 | d | 92.18 | b | 91.63 | d | 93.17 | a | 80.55 | a | 65.26 | 60.89 | b | 45.17 | a | 68.08 | |||
2021 | 44.32 | 36.44 | a | 54.57 | a | 60.69 | a | 71.48 | d | 85.87 | 90.72 | b | 92.93 | c | 87.36 | e | 72.10 | b | 61.14 | a | 53.21 | c | 67.57 | |||
2022 | 43.74 | 42.33 | a | 52.10 | a | 63.68 | b | 74.55 | 87.62 | a | 95.03 | 90.68 | 85.90 | j | ----- | z | ----- | z | ----- | z | 68.72 | d | ||||
2023 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 43.91 | 45.18 | 55.93 | 64.31 | 73.16 | 84.69 | 89.85 | 88.06 | 80.68 | 67.40 | 53.72 | 44.00 | 65.58 | |||||||||||||
S.D. | 5.26 | 5.71 | 3.51 | 3.96 | 3.64 | 4.02 | 3.49 | 3.29 | 4.13 | 4.22 | 5.66 | 4.25 | 1.94 | |||||||||||||
SKEW | -0.55 | 0.15 | 0.23 | 0.04 | -0.41 | 0.07 | 0.31 | -0.79 | -0.11 | -0.50 | -0.58 | -0.51 | -0.70 | |||||||||||||
MAX | 54.48 | 55.59 | 63.31 | 72.47 | 80.79 | 94.21 | 99.16 | 93.17 | 88.84 | 78.03 | 63.17 | 53.21 | 68.67 | |||||||||||||
MIN | 29.29 | 35.50 | 49.29 | 56.57 | 63.83 | 76.97 | 82.55 | 78.94 | 73.30 | 54.19 | 40.11 | 32.81 | 60.40 | |||||||||||||
YRS | 38 | 35 | 34 | 39 | 38 | 35 | 37 | 32 | 36 | 37 | 36 | 38 | 20 |