YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
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 | 43.55 | 22.50 | 16.38 | a | 27.48 | i | ||
1952 | 14.52 | c | 17.33 | 22.44 | 39.38 | b | 49.98 | j | 61.57 | a | 66.12 | b | 62.34 | c | 57.36 | a | 38.02 | a | 31.11 | g | 22.87 | 40.19 | b | |||
1953 | 17.28 | b | 16.07 | 26.57 | b | 34.31 | a | 50.34 | 61.72 | 64.50 | i | 64.88 | c | 54.52 | a | 48.05 | a | 33.57 | 20.00 | 38.84 | a | |||||
1954 | 11.02 | a | 23.95 | 19.60 | 36.98 | a | 44.16 | 62.05 | 62.84 | 60.40 | 51.77 | 43.13 | 33.00 | 18.24 | 38.93 | |||||||||||
1955 | 13.10 | 14.30 | 20.80 | a | 44.62 | 54.98 | c | 61.60 | 70.26 | 67.58 | a | 54.45 | 46.10 | 25.98 | a | 12.75 | a | 40.54 | ||||||||
1956 | 15.35 | 14.98 | 19.74 | 34.58 | 47.32 | a | 65.10 | 60.15 | a | 61.47 | a | 50.25 | b | 47.93 | b | 30.32 | 19.11 | 38.86 | ||||||||
1957 | 5.87 | a | 14.31 | b | 23.06 | 38.90 | 49.92 | 60.45 | 66.02 | 63.02 | 52.38 | 44.06 | 30.25 | 18.81 | 38.92 | |||||||||||
1958 | 16.84 | 12.02 | 25.47 | 39.02 | a | 47.82 | 54.72 | 63.84 | 62.05 | 55.78 | 45.74 | 31.67 | 8.48 | 38.62 | ||||||||||||
1959 | 5.42 | a | 8.95 | 23.73 | 37.55 | 55.35 | 62.32 | 64.85 | 66.77 | 56.55 | 40.06 | 21.43 | 22.13 | 38.76 | ||||||||||||
1960 | 15.10 | 15.00 | 14.35 | 39.07 | 49.87 | 58.18 | 63.10 | 64.21 | 55.23 | 44.34 | 32.20 | 14.10 | 38.73 | |||||||||||||
1961 | 8.65 | a | 18.25 | 28.08 | 36.23 | 47.65 | 59.18 | 64.98 | 64.71 | 56.38 | 46.02 | 31.45 | b | 17.29 | 39.91 | |||||||||||
1962 | 9.03 | 9.95 | 26.45 | 36.55 | 55.68 | 59.32 | 61.18 | 63.05 | 51.23 | 45.34 | 31.27 | 16.23 | 38.77 | |||||||||||||
1963 | 3.40 | 6.25 | 24.13 | 40.52 | 48.89 | 62.65 | 66.56 | 62.06 | 55.32 | 53.11 | 35.88 | a | 12.31 | 39.26 | ||||||||||||
1964 | 19.76 | 16.22 | 20.65 | 37.85 | 55.27 | 59.53 | 66.58 | 58.69 | 53.50 | 42.74 | 32.67 | 14.39 | 39.82 | |||||||||||||
1965 | 9.26 | 9.91 | 16.52 | 35.18 | 53.72 | a | 57.35 | 59.50 | 60.37 | 49.88 | 43.27 | 28.32 | 22.50 | 37.15 | ||||||||||||
1966 | 9.93 | a | 17.68 | 29.03 | b | 33.53 | 44.48 | 61.68 | 67.26 | 60.90 | 53.60 | 42.00 | 27.08 | 16.73 | 38.66 | |||||||||||
1967 | 14.35 | 5.59 | 23.45 | 37.57 | 43.55 | 59.98 | 61.63 | 58.76 | 54.32 | 41.11 | 25.78 | a | 18.56 | 37.05 | ||||||||||||
1968 | 10.42 | 10.76 | 28.69 | 39.92 | 47.73 | 58.15 | 62.98 | b | 61.82 | 56.78 | 47.05 | 30.08 | 17.85 | 39.35 | ||||||||||||
1969 | 14.81 | 15.64 | 19.84 | 39.75 | 50.65 | 53.58 | 62.00 | 65.63 | 54.78 | 40.60 | 29.53 | 19.08 | 38.82 | |||||||||||||
1970 | 6.98 | 9.92 | b | 19.13 | 37.65 | 47.69 | 60.73 | 66.15 | 63.28 | d | 55.15 | 46.45 | 29.57 | 16.94 | 38.30 | |||||||||||
1971 | 7.11 | 11.83 | a | 18.32 | a | 35.43 | 46.73 | a | 61.97 | 60.13 | 59.69 | 56.82 | 50.40 | 30.30 | 18.52 | 38.10 | ||||||||||
1972 | 5.29 | 7.93 | 17.82 | 31.19 | a | 52.82 | 56.68 | 61.77 | 62.11 | c | 51.85 | 41.14 | b | 28.90 | 13.15 | 35.89 | ||||||||||
1973 | 16.20 | a | 15.02 | 33.24 | 37.65 | 46.13 | 60.20 | 64.34 | 65.39 | 53.80 | 49.67 | b | 29.73 | 15.76 | 40.59 | |||||||||||
1974 | 10.19 | 9.37 | a | 21.50 | 38.08 | 47.39 | 56.87 | 66.89 | d | 60.98 | 49.28 | 43.45 | 31.30 | 22.26 | 38.13 | |||||||||||
1975 | 13.31 | b | 16.93 | 20.07 | b | 30.05 | 55.26 | 61.02 | 65.39 | 62.00 | 50.10 | 46.23 | 33.63 | 15.82 | c | 39.15 | ||||||||||
1976 | 10.40 | b | 20.90 | c | 23.39 | 41.40 | 48.15 | 64.03 | 64.85 | 61.38 | e | 54.27 | 38.92 | a | 22.83 | 7.39 | 38.16 | |||||||||
1977 | 2.03 | 13.73 | 31.21 | 42.50 | 59.72 | a | 57.25 | 67.74 | 58.02 | 54.43 | 43.82 | 32.70 | e | 16.26 | 39.95 | |||||||||||
1978 | 10.74 | 9.73 | 19.63 | d | 33.72 | a | 53.95 | 58.62 | a | 62.85 | 64.11 | 58.08 | 44.11 | 29.44 | c | 13.40 | 38.20 | |||||||||
1979 | 4.42 | 5.57 | a | 25.44 | 33.75 | 46.74 | 57.77 | 63.63 | 61.03 | 55.80 | 40.15 | 28.20 | 21.68 | 37.01 | ||||||||||||
1980 | 11.90 | 10.43 | 21.02 | 39.72 | a | 53.98 | 57.09 | a | 64.79 | 63.87 | 52.37 | 38.68 | 29.35 | 14.13 | 38.11 | |||||||||||
1981 | 11.11 | 18.62 | 26.84 | 39.87 | 46.90 | a | 59.73 | 63.53 | 63.56 | 50.82 | 40.26 | 34.67 | 18.18 | 39.51 | ||||||||||||
1982 | 2.18 | a | 12.11 | a | 22.98 | 32.02 | 55.50 | 53.38 | 65.37 | a | 59.69 | 53.55 | 45.10 | 28.80 | b | 23.00 | 37.81 | |||||||||
1983 | 16.78 | b | 22.04 | a | 26.13 | 33.67 | 44.85 | 59.05 | 69.60 | 68.08 | 57.45 | 42.92 | 30.93 | 7.32 | a | 39.90 | ||||||||||
1984 | 8.44 | 25.38 | 18.22 | a | 40.77 | 48.15 | 61.95 | a | 63.63 | 65.50 | 51.25 | 46.44 | 30.05 | 18.87 | a | 39.89 | ||||||||||
1985 | 7.68 | c | 10.61 | 28.07 | a | 41.86 | a | 51.32 | a | 55.97 | 62.24 | d | 60.37 | a | 54.42 | 43.27 | 26.28 | 7.38 | a | 37.46 | ||||||
1986 | 12.55 | 11.23 | b | 26.69 | b | 42.17 | a | 55.98 | 57.98 | 65.82 | a | 59.71 | 54.55 | a | 43.30 | a | 25.57 | 21.21 | 39.73 | |||||||
1987 | 18.15 | 23.00 | 29.63 | d | 44.78 | a | 53.62 | b | 62.78 | 66.69 | 62.73 | 55.60 | 38.60 | 32.93 | 22.73 | 42.60 | ||||||||||
1988 | 11.36 | b | 10.19 | 23.47 | 39.47 | 55.06 | 62.91 | b | 67.43 | b | 65.52 | a | 54.55 | b | 38.75 | a | 31.05 | a | 15.12 | b | 39.57 | |||||
1989 | 18.88 | a | 7.34 | 19.57 | a | 37.41 | a | 50.76 | 57.00 | 65.56 | 62.58 | a | 54.86 | b | 43.68 | 23.62 | b | 7.55 | 37.40 | |||||||
1990 | 21.82 | a | 17.04 | 28.43 | c | 41.26 | a | 46.66 | 60.22 | a | 63.17 | b | 62.39 | 55.29 | a | 42.42 | a | ----- | z | 17.27 | a | 41.45 | a | |||
1991 | 9.63 | a | 20.65 | a | 27.18 | 42.94 | d | 56.10 | 62.52 | a | 64.19 | ----- | z | 52.60 | a | 41.82 | a | 26.55 | 18.27 | 38.40 | a | |||||
1992 | 16.79 | 19.29 | 22.08 | 36.22 | 53.35 | 56.40 | 58.73 | 59.27 | 55.45 | 42.21 | 28.27 | b | 18.37 | a | 38.87 | |||||||||||
1993 | 13.81 | d | 14.44 | d | 25.78 | b | 34.62 | b | 50.65 | 57.67 | d | 64.69 | b | 64.95 | a | 50.77 | 42.13 | a | 27.46 | d | 17.95 | b | 38.74 | |||
1994 | 2.57 | b | 8.48 | 26.90 | b | 37.34 | e | 51.13 | a | 60.14 | i | ----- | z | 58.53 | a | 56.17 | d | 45.02 | g | 29.46 | g | 22.57 | j | 34.45 | e | |
1995 | 12.93 | c | 11.55 | f | 25.83 | b | 31.96 | d | 46.58 | f | 61.80 | c | 64.96 | g | 64.71 | e | 50.14 | e | 43.50 | c | 19.00 | c | 13.03 | a | 35.88 | c |
1996 | 7.93 | a | 10.80 | a | 19.00 | f | 31.80 | g | 45.95 | c | 59.70 | c | 59.24 | f | 62.91 | c | 54.29 | d | 43.38 | e | 25.09 | c | 17.97 | a | 36.45 | c |
1997 | 10.68 | c | 15.65 | a | 19.69 | d | 33.33 | c | 42.84 | b | 60.87 | d | 62.86 | c | 57.98 | d | 55.59 | m | 34.93 | p | 25.96 | b | 22.94 | e | 35.28 | b |
1998 | 15.35 | 27.46 | c | 22.31 | b | 39.97 | a | 52.96 | f | 54.80 | c | 61.45 | b | 64.40 | f | 57.43 | c | 45.88 | b | 33.12 | 21.12 | a | 37.89 | b | ||
1999 | 6.87 | a | 21.23 | d | 25.38 | a | 39.29 | a | 52.28 | d | 60.55 | 67.13 | 60.83 | b | 53.97 | 39.78 | b | 35.41 | b | 16.47 | 39.93 | |||||
2000 | 9.19 | 15.91 | a | 29.65 | a | 33.87 | c | 52.31 | d | 56.26 | a | 59.95 | b | 59.59 | b | 50.41 | b | 44.58 | a | 30.00 | b | 7.44 | f | 40.16 | a | |
2001 | 14.16 | c | 5.86 | j | 20.16 | l | 38.42 | l | 48.48 | c | 57.32 | e | 64.73 | e | 65.96 | c | 55.22 | e | 42.17 | h | 38.94 | n | 28.14 | t | 50.98 | f |
2002 | 19.85 | k | 18.83 | m | 15.20 | k | 34.21 | k | 44.83 | g | 61.85 | j | 67.90 | j | 64.30 | c | 57.24 | i | 37.43 | j | 22.15 | q | 16.06 | n | 64.30 | k |
2003 | 16.35 | r | 9.31 | l | 20.84 | o | 36.25 | n | 49.14 | j | 60.26 | c | 64.72 | f | 65.93 | i | ----- | z | 44.90 | k | 30.43 | o | 20.21 | q | 60.26 | k |
2004 | 3.36 | q | 15.75 | m | 23.80 | d | 37.00 | f | 47.82 | f | 56.67 | d | 60.71 | b | 57.86 | b | 59.61 | b | 43.46 | g | 32.08 | d | 13.64 | c | 43.48 | e |
2005 | 10.89 | c | 17.05 | 19.86 | c | 40.95 | b | 48.13 | d | 64.05 | a | 65.12 | b | 63.48 | b | 59.45 | b | 47.00 | a | 29.69 | c | 19.00 | c | 40.39 | ||
2006 | 23.21 | c | 13.42 | c | 25.29 | b | 41.85 | c | 52.07 | a | 59.72 | 67.30 | c | 62.35 | a | 52.38 | a | 39.21 | 33.18 | 23.05 | 41.09 | |||||
2007 | 13.87 | 7.07 | a | 25.43 | a | 33.90 | 53.39 | c | 62.79 | b | 64.16 | 64.14 | b | 55.15 | c | 48.40 | 27.77 | 15.50 | 39.30 | |||||||
2008 | 13.82 | 8.28 | 14.68 | f | ----- | z | ----- | z | ----- | z | ----- | z | 60.07 | a | 55.43 | b | ----- | z | 28.91 | h | 10.00 | h | 34.40 | h | ||
2009 | 3.12 | a | 12.20 | h | 18.08 | r | 33.61 | k | 45.92 | 57.23 | 57.06 | v | ----- | z | ----- | z | 36.48 | k | 35.54 | d | 14.60 | 31.28 | g | |||
2010 | 15.08 | 16.25 | 30.96 | c | 48.83 | x | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 20.76 | i | ||
2011 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2012 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2013 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2014 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2015 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2016 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2017 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2018 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2019 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2020 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2021 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 55.93 | 50.77 | 30.57 | c | 24.21 | q | 45.76 | i | ||
2022 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 11.46 | 14.19 | 23.84 | 37.69 | 50.34 | 59.47 | 64.25 | 62.36 | 54.23 | 43.82 | 29.48 | 16.86 | 38.95 | |||||||||||||
S.D. | 4.95 | 5.25 | 4.13 | 3.53 | 3.97 | 2.73 | 2.58 | 2.54 | 2.45 | 3.40 | 3.66 | 4.23 | 1.23 | |||||||||||||
SKEW | 0.04 | 0.44 | 0.03 | -0.11 | 0.12 | -0.20 | -0.05 | 0.13 | -0.14 | 0.45 | -0.63 | -0.62 | 0.21 | |||||||||||||
MAX | 23.21 | 27.46 | 33.24 | 44.78 | 59.72 | 65.10 | 70.26 | 68.08 | 59.61 | 53.11 | 35.88 | 23.05 | 42.60 | |||||||||||||
MIN | 2.03 | 5.57 | 14.35 | 30.05 | 42.84 | 53.38 | 58.73 | 57.86 | 49.28 | 38.02 | 19.00 | 7.32 | 35.89 | |||||||||||||
YRS | 56 | 53 | 53 | 51 | 51 | 55 | 50 | 54 | 55 | 52 | 53 | 53 | 42 |