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 | 34.26 | 12.63 | 8.07 | a | 18.32 | i | ||
1952 | 3.79 | c | 5.24 | 9.58 | 23.79 | b | 34.52 | j | 47.45 | a | 52.79 | b | 48.86 | b | 43.27 | 25.63 | a | 22.67 | c | 16.23 | 27.21 | a | ||||
1953 | 8.03 | 6.29 | 16.23 | a | 23.93 | a | 33.97 | 47.27 | 49.45 | i | 51.03 | b | 41.66 | a | 33.70 | a | 23.53 | 11.61 | 27.02 | a | ||||||
1954 | 1.03 | 12.96 | 5.81 | 23.13 | 31.77 | 47.63 | 47.26 | 45.87 | 41.67 | 33.42 | 25.63 | 9.29 | 27.12 | |||||||||||||
1955 | 3.45 | 3.04 | 6.77 | 30.73 | 38.39 | c | 47.47 | 56.19 | 54.68 | 41.60 | 35.23 | 18.45 | a | 3.50 | a | 28.29 | ||||||||||
1956 | 5.13 | 2.07 | 4.19 | 23.07 | 31.63 | a | 51.17 | 46.20 | a | 48.20 | a | 38.29 | b | 33.55 | b | 22.80 | 9.90 | 26.35 | ||||||||
1957 | -5.70 | a | 0.77 | b | 8.48 | 23.77 | 34.55 | 46.40 | 50.58 | 47.81 | 39.20 | 31.97 | 22.90 | 10.45 | 25.93 | |||||||||||
1958 | 7.71 | 2.57 | 12.61 | 24.53 | 32.55 | 39.10 | 50.84 | 47.90 | 43.10 | 35.97 | 23.37 | -2.03 | 26.52 | |||||||||||||
1959 | -5.53 | a | -5.86 | 7.68 | 24.80 | 40.55 | 48.27 | 51.00 | 55.03 | 45.13 | 31.58 | 13.70 | 13.52 | 26.66 | ||||||||||||
1960 | 6.26 | 3.79 | -3.87 | 27.47 | 37.94 | 43.07 | 48.52 | 50.19 | 42.93 | 32.97 | 24.70 | 4.61 | 26.55 | |||||||||||||
1961 | -2.40 | a | 4.68 | 16.06 | 24.13 | 32.23 | 43.07 | 51.48 | 48.87 | 44.77 | 35.32 | 24.11 | b | 9.35 | 27.64 | |||||||||||
1962 | 0.35 | -1.32 | 13.23 | 23.17 | 42.03 | 44.20 | 46.84 | 48.42 | 39.67 | 35.58 | 24.30 | 8.32 | 27.07 | |||||||||||||
1963 | -5.39 | -6.32 | 9.13 | 26.40 | 33.03 | 47.90 | 52.23 | 48.32 | 42.43 | 39.10 | 28.34 | a | 3.39 | 26.55 | ||||||||||||
1964 | 10.58 | 2.38 | 7.58 | 24.13 | 41.16 | 44.30 | 52.35 | 47.84 | 42.63 | 31.45 | 23.80 | 6.61 | 27.90 | |||||||||||||
1965 | -1.77 | -2.79 | 3.29 | 23.17 | 39.53 | a | 43.10 | 45.94 | 47.52 | 39.43 | 32.87 | 21.27 | 15.45 | 25.58 | ||||||||||||
1966 | -1.39 | 5.18 | 16.47 | a | 21.17 | 30.13 | 47.17 | 51.58 | 49.29 | 40.17 | 30.48 | 19.50 | 7.68 | 26.45 | ||||||||||||
1967 | 4.35 | -7.79 | 8.52 | 24.00 | 27.68 | 45.73 | 47.77 | 44.94 | 40.50 | 31.45 | 18.60 | 9.71 | 24.62 | |||||||||||||
1968 | -0.32 | -1.31 | 14.97 | 26.20 | 33.35 | 44.80 | 49.69 | b | 47.81 | 46.60 | 37.45 | 23.53 | 10.65 | 27.78 | ||||||||||||
1969 | 6.81 | 2.54 | 4.42 | 26.93 | 35.61 | 41.70 | 48.00 | 49.61 | 41.73 | 31.13 | 19.93 | 10.61 | 26.59 | |||||||||||||
1970 | -4.97 | -4.93 | a | 3.32 | 24.37 | 35.32 | 44.43 | 51.45 | 47.93 | c | 43.73 | 34.77 | 22.20 | 7.06 | 25.39 | |||||||||||
1971 | -2.68 | -1.93 | a | 4.03 | a | 20.87 | 30.65 | 46.40 | 46.68 | 45.32 | 45.43 | 40.61 | 22.63 | 9.26 | 25.61 | |||||||||||
1972 | -9.16 | -4.79 | 3.61 | 16.03 | a | 35.13 | 41.33 | 48.35 | 49.14 | c | 39.83 | 31.83 | b | 22.00 | 4.81 | 23.18 | ||||||||||
1973 | 3.90 | a | 2.43 | 23.10 | 24.87 | 34.23 | 46.37 | 50.32 | 53.87 | 41.53 | 36.77 | 22.67 | 6.13 | 28.85 | ||||||||||||
1974 | -0.58 | -6.93 | a | 8.48 | 24.63 | 33.68 | 43.20 | 52.96 | c | 48.06 | 36.37 | 32.42 | 22.87 | 13.19 | 25.70 | |||||||||||
1975 | 2.76 | b | 6.61 | 6.79 | b | 14.90 | 39.00 | 48.40 | 52.29 | 48.61 | 37.63 | 33.32 | 23.23 | 6.04 | c | 26.63 | ||||||||||
1976 | 0.38 | b | 7.58 | c | 11.74 | 27.77 | 32.90 | 49.33 | 49.35 | 44.00 | e | 38.80 | 27.33 | a | 13.63 | -2.74 | 25.01 | |||||||||
1977 | -9.26 | 1.04 | 19.26 | 26.33 | 43.53 | a | 42.83 | 54.81 | 45.81 | 45.50 | 30.77 | 24.20 | e | 8.23 | 27.75 | |||||||||||
1978 | 0.61 | -3.82 | 3.96 | d | 21.45 | a | 38.39 | 44.21 | a | 49.16 | 51.19 | 47.07 | 32.55 | 17.83 | 3.42 | 25.50 | ||||||||||
1979 | -5.94 | -8.61 | 13.58 | 20.40 | 33.16 | 42.80 | 48.23 | 48.16 | 41.93 | 32.23 | 19.97 | 12.71 | 24.89 | |||||||||||||
1980 | 1.19 | -3.00 | 6.90 | 26.62 | a | 36.81 | 42.00 | a | 50.58 | 51.94 | 40.77 | 28.29 | 20.70 | 5.19 | 25.67 | |||||||||||
1981 | -2.29 | 6.79 | 14.84 | 26.73 | 30.23 | a | 46.93 | 48.13 | 50.35 | 37.30 | 30.26 | 25.00 | 9.03 | 26.94 | ||||||||||||
1982 | -11.30 | a | -1.79 | 10.65 | 17.10 | 40.90 | 38.57 | 50.93 | a | 46.32 | 42.27 | 33.74 | 20.82 | b | 16.84 | 25.42 | ||||||||||
1983 | 7.97 | a | 12.22 | a | 16.61 | 21.13 | 30.00 | 43.20 | 55.06 | 53.97 | 45.33 | 31.26 | 24.30 | -2.45 | 28.22 | |||||||||||
1984 | -3.84 | 15.07 | 3.97 | a | 26.87 | 33.65 | 48.33 | 49.29 | 52.55 | 38.90 | 36.65 | 21.17 | 9.68 | 27.69 | ||||||||||||
1985 | -3.25 | c | -1.82 | 15.10 | 28.30 | 36.52 | 41.10 | 47.61 | 47.80 | a | 42.40 | 31.13 | 19.23 | -1.81 | 25.19 | |||||||||||
1986 | 2.06 | -1.46 | b | 11.93 | a | 30.07 | 41.06 | 42.77 | 51.57 | a | 46.00 | 42.07 | 31.55 | 15.57 | 11.58 | 27.06 | ||||||||||
1987 | 7.94 | 9.54 | 17.07 | a | 28.45 | a | 37.86 | b | 47.43 | 53.19 | 49.45 | 41.47 | 28.32 | 23.57 | 14.81 | 29.92 | ||||||||||
1988 | 1.48 | -2.14 | 10.45 | 24.90 | 36.19 | 44.86 | b | 50.52 | 52.87 | a | 42.68 | b | 29.26 | 25.48 | a | 5.00 | b | 26.80 | ||||||||
1989 | 8.13 | a | -6.04 | 6.60 | a | 24.43 | 35.48 | 42.90 | 50.00 | 50.16 | 40.66 | a | 32.13 | 14.32 | b | -2.16 | 24.72 | |||||||||
1990 | 10.93 | a | 3.43 | 14.43 | a | 27.28 | a | 31.61 | 46.28 | a | 49.45 | b | 48.00 | 42.47 | 30.90 | ----- | z | 8.61 | 28.49 | a | ||||||
1991 | -1.32 | 7.21 | 14.00 | 29.59 | a | 43.35 | 47.62 | a | 51.65 | ----- | z | 41.03 | a | 30.29 | 18.23 | 8.35 | 26.36 | a | ||||||||
1992 | 8.39 | 8.83 | 8.52 | 24.60 | 37.19 | 40.93 | 46.16 | 45.48 | 44.13 | 31.74 | 21.43 | b | 10.30 | a | 27.31 | |||||||||||
1993 | 3.52 | d | 0.48 | c | 9.00 | 22.43 | b | 37.13 | 43.93 | 51.07 | b | 50.90 | a | 37.90 | 30.00 | 17.26 | c | 7.79 | b | 25.95 | ||||||
1994 | -9.10 | a | -3.96 | 12.67 | a | 23.61 | b | 33.40 | a | 45.03 | a | ----- | z | 47.20 | a | 45.23 | 32.47 | a | 20.19 | c | 13.30 | h | 24.67 | b | ||
1995 | 2.28 | b | 1.64 | 12.16 | 21.61 | b | 33.90 | b | 46.77 | 52.83 | a | 52.11 | d | 36.85 | c | 34.37 | a | 8.89 | c | 3.00 | a | 25.53 | ||||
1996 | -4.53 | a | -3.50 | a | 3.76 | b | 17.70 | c | 29.90 | 44.48 | a | 46.93 | d | 47.97 | b | 41.11 | b | 29.03 | 16.96 | b | 9.10 | 23.24 | ||||
1997 | 0.38 | b | 1.79 | 3.26 | d | 17.37 | 27.45 | 42.59 | c | 45.62 | b | 42.00 | c | 39.64 | b | 29.50 | a | 15.04 | b | 14.03 | a | 23.22 | ||||
1998 | 4.77 | 14.92 | c | 8.20 | a | 22.70 | 32.47 | a | 38.11 | b | 42.55 | b | 47.36 | c | 39.73 | 32.90 | 24.40 | 8.37 | a | 26.37 | ||||||
1999 | -7.94 | 8.07 | a | 9.23 | 23.43 | 36.26 | d | 44.07 | 52.35 | 45.47 | a | 38.47 | 26.81 | 23.38 | a | 5.84 | 25.45 | |||||||||
2000 | -2.52 | 0.79 | a | 15.55 | 18.82 | b | 35.25 | c | 40.77 | 41.73 | a | 42.60 | a | 35.27 | 28.13 | a | 19.68 | b | -4.46 | e | 22.63 | |||||
2001 | -2.86 | c | -12.11 | i | 0.26 | l | 18.44 | l | 29.75 | c | 40.93 | b | 50.19 | e | 51.83 | a | 42.73 | d | 29.78 | h | 26.68 | k | 18.62 | r | 35.43 | f |
2002 | 6.50 | k | 5.62 | l | 0.81 | j | 18.24 | i | 28.67 | g | 47.13 | g | 53.26 | d | 50.82 | c | 45.23 | h | 23.70 | h | 4.85 | q | -2.35 | n | 52.04 | j |
2003 | -0.35 | n | -8.75 | l | 8.41 | n | 17.94 | n | 32.84 | f | 44.52 | c | 49.35 | e | 52.04 | h | ----- | z | 31.04 | h | 21.88 | n | 9.94 | o | 46.93 | j |
2004 | -6.35 | n | 1.12 | m | 9.31 | b | 25.07 | c | 35.42 | 44.17 | a | 48.65 | 46.10 | 48.10 | 34.50 | a | 24.00 | 4.74 | 32.01 | b | ||||||
2005 | 1.87 | 5.57 | 5.61 | 26.50 | 36.35 | 51.34 | a | 51.42 | 51.65 | 47.57 | 38.10 | 22.13 | 13.81 | 29.33 | ||||||||||||
2006 | 16.45 | 2.25 | 13.23 | 29.03 | 40.84 | 46.47 | 54.03 | 49.61 | 40.53 | 29.90 | 26.20 | 15.97 | 30.38 | |||||||||||||
2007 | 4.26 | -3.52 | a | 13.10 | a | 21.60 | 40.28 | b | 47.82 | b | 51.03 | 51.24 | b | 44.26 | c | 38.94 | 20.10 | 7.81 | 28.08 | |||||||
2008 | 5.39 | -4.83 | -0.32 | f | ----- | z | ----- | z | ----- | z | ----- | z | 45.73 | a | 43.17 | a | ----- | z | 21.46 | f | -0.73 | e | 17.75 | g | ||
2009 | -9.10 | a | -1.70 | h | 1.15 | r | 21.63 | k | 31.29 | 44.77 | 43.00 | v | ----- | z | ----- | z | 28.80 | k | 26.15 | d | 6.74 | 19.97 | g | |||
2010 | 6.97 | 5.89 | 16.00 | c | 34.17 | x | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9.62 | 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 | 44.47 | 41.71 | 22.00 | c | 15.31 | o | 36.06 | i | ||
2022 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 0.82 | 1.58 | 10.02 | 24.00 | 35.23 | 44.78 | 49.96 | 48.76 | 41.77 | 32.68 | 21.11 | 7.64 | 26.41 | |||||||||||||
S.D. | 5.95 | 5.80 | 5.14 | 3.51 | 3.97 | 2.93 | 2.90 | 2.88 | 2.88 | 3.39 | 3.88 | 5.15 | 1.67 | |||||||||||||
SKEW | 0.07 | 0.40 | -0.00 | -0.53 | 0.21 | -0.08 | -0.47 | 0.06 | 0.04 | 0.51 | -0.96 | -0.48 | -0.00 | |||||||||||||
MAX | 16.45 | 15.07 | 23.10 | 30.73 | 43.53 | 51.34 | 56.19 | 55.03 | 48.10 | 41.71 | 28.34 | 16.84 | 30.38 | |||||||||||||
MIN | -11.30 | -8.61 | -3.87 | 14.90 | 27.45 | 38.11 | 41.73 | 42.00 | 35.27 | 25.63 | 8.89 | -4.46 | 22.63 | |||||||||||||
YRS | 56 | 54 | 54 | 53 | 54 | 56 | 54 | 55 | 56 | 55 | 55 | 55 | 47 |