YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
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 | 84.41 | i | 73.73 | d | 65.65 | 40.63 | 35.52 | d | 53.88 | h | ||
1989 | 35.64 | i | ----- | z | 42.93 | c | 59.96 | c | 64.00 | f | 74.61 | b | 84.47 | l | 75.50 | k | 75.74 | k | 58.43 | j | 43.73 | o | 37.75 | o | 59.17 | i |
1990 | ----- | z | ----- | z | 55.88 | w | 60.37 | c | 62.59 | b | 68.30 | c | 82.10 | a | 81.53 | a | 81.90 | 54.97 | 45.89 | k | 31.67 | m | 70.25 | e | ||
1991 | 33.27 | a | 47.56 | a | 43.30 | d | 54.86 | b | 58.97 | a | 64.25 | b | 79.73 | a | 83.39 | c | 75.79 | b | 60.69 | e | 40.24 | a | 38.72 | f | 58.37 | a |
1992 | 38.30 | a | 45.86 | 56.30 | a | 58.30 | 71.54 | e | 75.24 | e | 78.56 | d | 86.76 | j | 67.52 | e | 62.60 | k | 38.39 | g | 28.27 | i | 61.45 | d | ||
1993 | 32.50 | o | 35.47 | m | 46.68 | l | 54.29 | m | 75.47 | p | 69.82 | h | 68.65 | n | 75.93 | q | 71.65 | m | 62.94 | o | 43.00 | n | 39.67 | s | ----- | z |
1994 | 43.27 | p | 36.36 | 52.03 | 56.07 | 67.81 | 71.37 | 85.48 | 83.45 | 78.59 | h | 56.57 | a | 36.66 | a | 35.32 | 58.11 | b | ||||||||
1995 | 37.70 | a | 44.67 | a | ----- | z | 52.30 | 65.39 | 68.00 | i | 80.79 | q | 75.00 | 72.80 | 51.61 | 44.60 | 34.63 | a | 53.19 | c | ||||||
1996 | 31.19 | 36.00 | 44.45 | b | 55.77 | 57.74 | 72.17 | 80.77 | 78.29 | 65.97 | 54.94 | 39.03 | 30.74 | 53.92 | ||||||||||||
1997 | 32.65 | e | 39.57 | 46.90 | 54.13 | 69.45 | 69.87 | 82.65 | 83.94 | 71.13 | 57.42 | 47.40 | 36.94 | 57.67 | ||||||||||||
1998 | 38.50 | a | 42.96 | 49.61 | 60.00 | 63.27 | a | 70.93 | 90.03 | a | 86.45 | 77.90 | 54.00 | 42.62 | a | 30.03 | a | 58.86 | ||||||||
1999 | 36.68 | 38.89 | 49.19 | 53.27 | 60.77 | 69.47 | 83.90 | 81.68 | 70.27 | 56.32 | 47.70 | 33.73 | a | 56.82 | ||||||||||||
2000 | 32.97 | 40.24 | 46.16 | 57.90 | 60.32 | 75.20 | 78.45 | 81.61 | ----- | z | ----- | z | ----- | z | ----- | z | 59.11 | d | ||||||||
2001 | ----- | z | 39.85 | o | 48.56 | d | 45.68 | e | 67.85 | e | 65.20 | e | 76.52 | 82.50 | a | 74.96 | b | 54.93 | b | 48.34 | a | 32.90 | a | 59.74 | b | |
2002 | 34.31 | r | 39.11 | a | 41.41 | n | 56.62 | q | 61.50 | o | 71.64 | s | 89.73 | p | 79.40 | a | 71.80 | e | 55.52 | b | 46.36 | b | 38.82 | c | 55.17 | f |
2003 | 40.97 | 39.57 | n | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 40.97 | k | |
2004 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2005 | ----- | z | ----- | z | 57.62 | w | ----- | z | ----- | z | ----- | z | ----- | z | 81.50 | w | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2006 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 42.50 | p | 38.75 | g | ----- | z |
2007 | 37.57 | h | 41.69 | l | 49.95 | i | 53.94 | l | 67.00 | k | 70.71 | m | 89.87 | p | 84.83 | m | 75.87 | o | 64.29 | q | 54.54 | q | 36.55 | t | ----- | z |
2008 | 33.11 | m | ----- | z | 44.85 | r | 49.00 | t | 62.95 | l | 66.31 | n | 81.81 | o | 83.13 | p | 74.44 | n | 67.73 | p | 55.45 | s | 40.64 | t | ----- | z |
2009 | 37.36 | q | 44.71 | n | 42.92 | r | ----- | z | 65.69 | r | 75.00 | k | 81.07 | p | 83.27 | p | 83.08 | r | 52.52 | j | 47.69 | n | 32.83 | m | ----- | z |
2010 | 43.56 | o | 44.77 | o | 51.14 | x | ----- | z | ----- | z | ----- | z | 79.46 | r | 75.30 | u | 67.43 | i | ----- | z | 33.62 | v | 33.95 | l | ----- | z |
2011 | 30.63 | l | 29.94 | j | 41.21 | l | 42.00 | m | 55.53 | l | 64.45 | s | 73.78 | m | 79.44 | o | 73.39 | l | 53.77 | r | 40.11 | k | 33.00 | r | ----- | z |
2012 | 34.00 | l | 36.11 | k | 40.83 | g | 48.00 | q | 62.52 | b | 68.80 | o | 80.71 | 85.72 | f | ----- | z | 49.59 | n | 45.03 | a | 35.29 | j | 62.75 | i | |
2013 | 34.52 | d | 38.86 | 48.48 | 54.00 | 64.68 | 69.40 | 83.60 | a | 83.77 | 72.93 | 57.63 | a | 42.63 | 33.06 | 56.96 | ||||||||||
2014 | 36.77 | 32.50 | 47.06 | 55.27 | 67.00 | 69.60 | 84.68 | 86.16 | 77.17 | 63.29 | 42.20 | 38.52 | 58.35 | |||||||||||||
2015 | 39.52 | 46.86 | 53.61 | 57.63 | 70.06 | 80.53 | 87.03 | 87.26 | 71.20 | 66.52 | 42.43 | 34.97 | 61.47 | |||||||||||||
2016 | 37.10 | 45.66 | 49.39 | 64.43 | 65.87 | 72.43 | 78.71 | 84.52 | 70.63 | 55.94 | 50.97 | 28.84 | 58.71 | |||||||||||||
2017 | 30.19 | d | 37.46 | 45.23 | 53.70 | 66.27 | a | 71.23 | 88.61 | 88.23 | 73.77 | 56.23 | 43.03 | a | 30.81 | 57.06 | ||||||||||
2018 | 39.71 | 35.21 | 45.32 | 53.97 | 66.71 | q | 69.27 | 83.39 | 83.48 | 70.23 | 59.13 | 44.03 | 36.10 | 56.35 | a | |||||||||||
2019 | 38.42 | 28.50 | 43.16 | 54.63 | 66.97 | 71.13 | 78.16 | 82.45 | 68.70 | 51.45 | 45.70 | 38.13 | 55.62 | |||||||||||||
2020 | 38.13 | 41.31 | 46.26 | 55.27 | 63.10 | 66.77 | 77.87 | 83.84 | 75.87 | 57.81 | 43.97 | 39.39 | 57.46 | |||||||||||||
2021 | 37.61 | 33.15 | b | 49.19 | 58.37 | 65.77 | 78.33 | 89.73 | a | 82.45 | 72.63 | 59.23 | 46.55 | h | 31.87 | 59.85 | a | |||||||||
2022 | 35.61 | 38.21 | ----- | z | ----- | z | ----- | z | ----- | z | 82.83 | g | 87.06 | 78.23 | 61.29 | g | 35.60 | 27.39 | 50.35 | f | ||||||
2023 | ----- | z | 34.15 | o | 42.65 | 48.24 | m | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 42.65 | k | |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 36.31 | 39.45 | 47.49 | 55.99 | 64.90 | 71.26 | 82.53 | 83.17 | 73.10 | 57.49 | 43.46 | 34.09 | 57.54 | |||||||||||||
S.D. | 3.04 | 5.12 | 3.67 | 3.79 | 3.72 | 4.05 | 4.11 | 3.12 | 3.85 | 4.04 | 3.85 | 3.51 | 1.93 | |||||||||||||
SKEW | -0.55 | -0.17 | 0.68 | -0.34 | -0.19 | 0.49 | 0.41 | -0.68 | 0.31 | 0.80 | -0.22 | -0.21 | 0.15 | |||||||||||||
MAX | 40.97 | 47.56 | 56.30 | 64.43 | 71.54 | 80.53 | 90.03 | 88.23 | 81.90 | 66.52 | 50.97 | 39.39 | 61.47 | |||||||||||||
MIN | 30.19 | 28.50 | 42.65 | 45.68 | 57.74 | 64.25 | 76.52 | 75.00 | 65.97 | 51.45 | 35.60 | 27.39 | 53.92 | |||||||||||||
YRS | 19 | 20 | 20 | 21 | 20 | 20 | 20 | 21 | 21 | 20 | 20 | 19 | 11 |