YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1959 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 62.88 | w | 62.08 | f | 48.77 | 31.87 | a | 13.90 | 18.65 | 28.29 | h | |||
1960 | 1.14 | b | 4.71 | a | 7.42 | 33.20 | 43.77 | 51.73 | 60.07 | d | 59.17 | a | 48.43 | 36.67 | a | 21.83 | 2.35 | 30.88 | ||||||||
1961 | -2.19 | 12.46 | 25.06 | 26.77 | 41.00 | 54.48 | a | 57.89 | c | 59.06 | 46.87 | 36.81 | 20.50 | 2.71 | 31.79 | |||||||||||
1962 | -6.16 | -1.96 | 17.52 | 29.23 | 47.32 | 55.57 | 57.78 | d | 57.68 | 44.43 | 38.17 | a | 28.40 | 7.19 | 31.26 | |||||||||||
1963 | -8.00 | -0.70 | a | 21.71 | 33.70 | 43.13 | 58.00 | e | 59.94 | 58.68 | 49.87 | 45.60 | a | 24.03 | -2.81 | 31.93 | ||||||||||
1964 | 4.35 | 7.90 | 9.03 | 33.93 | 47.68 | 54.66 | a | 61.71 | 55.68 | 43.57 | 34.42 | 21.53 | -3.76 | b | 30.89 | |||||||||||
1965 | -11.85 | d | -3.50 | 4.81 | 32.37 | 45.00 | h | 53.37 | 58.58 | 56.46 | c | 40.86 | a | 37.00 | 18.10 | 13.48 | b | 27.24 | a | |||||||
1966 | -9.43 | x | 0.39 | j | 22.08 | f | 28.76 | a | 40.00 | 54.60 | 61.77 | 55.16 | 46.07 | 33.90 | 15.67 | 5.83 | g | 41.99 | d | |||||||
1967 | -2.35 | -6.61 | 16.87 | a | 30.73 | 37.13 | 52.77 | 55.42 | 52.13 | 47.20 | 33.45 | 18.90 | 8.90 | b | 28.71 | |||||||||||
1968 | -3.87 | a | -1.31 | 22.48 | 32.60 | 40.07 | a | 54.48 | a | 57.26 | 55.97 | 47.63 | 36.35 | 24.00 | a | 2.55 | 30.68 | |||||||||
1969 | -11.17 | a | 7.11 | 6.68 | 34.90 | 43.84 | 46.73 | 58.17 | a | 61.00 | a | 48.70 | 33.23 | 21.13 | 8.45 | 29.90 | ||||||||||
1970 | -9.26 | -1.32 | 9.68 | 30.70 | 42.39 | 56.77 | 59.26 | 57.61 | 47.93 | 36.52 | 19.90 | a | 1.90 | 29.34 | ||||||||||||
1971 | -10.52 | 2.43 | 18.00 | 31.80 | 41.00 | 57.70 | 53.32 | 55.87 | 49.23 | 39.23 | 21.10 | 2.74 | 30.16 | |||||||||||||
1972 | -10.16 | -6.55 | 14.13 | 30.50 | 48.16 | 53.73 | 55.58 | 56.87 | 44.40 | 32.19 | 18.20 | -7.19 | 27.49 | |||||||||||||
1973 | 2.32 | 7.79 | 27.94 | 30.77 | 41.26 | 54.47 | 56.71 | 61.81 | 46.03 | 41.70 | a | 18.43 | 4.61 | 32.82 | ||||||||||||
1974 | -7.38 | b | 1.43 | 15.13 | 32.33 | 41.03 | 53.30 | 62.23 | 54.35 | 40.67 | 35.48 | 22.70 | 13.32 | 30.38 | ||||||||||||
1975 | 0.52 | 1.75 | 8.03 | a | 29.25 | b | 45.61 | 55.60 | 62.55 | 56.61 | 44.27 | 39.03 | 23.17 | a | 6.74 | 31.09 | ||||||||||
1976 | -3.50 | a | 14.03 | 14.58 | 36.53 | 43.13 | a | 57.50 | 60.45 | 60.97 | 46.47 | 31.92 | f | 13.57 | -3.26 | 30.95 | a | |||||||||
1977 | -13.71 | 7.96 | 22.38 | o | 39.57 | 55.42 | 54.60 | 59.71 | 51.97 | 49.53 | 36.06 | 16.17 | 0.52 | 32.53 | a | |||||||||||
1978 | -11.10 | -5.21 | 17.69 | b | 32.97 | 47.97 | 52.52 | a | 58.61 | 56.71 | 52.53 | 34.68 | 15.17 | -1.06 | 29.29 | |||||||||||
1979 | -13.70 | a | -9.61 | 12.07 | a | 27.93 | c | 38.13 | 54.07 | 59.45 | 55.03 | 49.17 | 34.10 | 18.20 | 17.58 | 28.53 | ||||||||||
1980 | -4.68 | -0.61 | a | 9.84 | 35.77 | 47.57 | a | 54.20 | 58.32 | 56.16 | 47.23 | 33.39 | 23.57 | b | 1.03 | 30.15 | ||||||||||
1981 | 2.61 | 7.96 | 23.42 | 35.60 | 43.97 | b | 51.27 | d | 59.79 | b | 57.61 | 45.23 | 34.00 | 27.41 | a | 4.35 | 32.77 | |||||||||
1982 | -16.00 | 2.68 | 17.61 | 29.90 | 49.14 | c | 48.60 | 60.74 | 56.74 | 45.50 | 36.48 | b | 16.11 | b | 11.87 | 29.95 | ||||||||||
1983 | 8.55 | 16.22 | a | 25.60 | a | 30.90 | 41.52 | 55.43 | 63.29 | 61.81 | 48.24 | a | 36.52 | b | 25.86 | a | -8.42 | 33.79 | ||||||||
1984 | 0.27 | a | 19.90 | ----- | z | 37.47 | 41.13 | 54.13 | 57.77 | 59.81 | 42.20 | 40.17 | b | 21.60 | 0.14 | b | 34.05 | a | ||||||||
1985 | -5.65 | 0.50 | 25.32 | 35.41 | a | 46.10 | 50.55 | a | 57.39 | 54.65 | 47.47 | ----- | z | 9.62 | a | -5.55 | b | 28.71 | a | |||||||
1986 | 3.16 | 1.36 | 22.70 | a | 34.87 | 46.55 | 56.00 | 61.45 | 54.60 | a | 45.85 | c | 34.90 | b | 13.97 | a | 12.97 | b | 32.36 | |||||||
1987 | 9.33 | a | 19.58 | b | 23.17 | a | 37.57 | 49.55 | 55.72 | a | 62.65 | 55.97 | b | 48.07 | a | 30.54 | c | 24.56 | e | ----- | z | 37.88 | a | |||
1988 | -3.48 | b | -1.36 | a | ----- | z | 29.93 | 51.03 | a | 61.63 | 62.23 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 33.33 | f | |||
1989 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 39.29 | x | 14.50 | -2.77 | 5.86 | j | ||
1990 | 13.74 | 9.43 | 23.74 | 32.73 | 43.52 | 55.83 | 59.45 | 59.39 | 51.40 | 34.94 | 23.67 | 3.06 | 34.24 | |||||||||||||
1991 | -2.84 | 12.11 | 21.94 | 37.57 | 51.43 | a | 60.97 | 60.55 | 61.35 | 49.07 | 33.19 | 15.67 | 10.00 | 34.25 | ||||||||||||
1992 | 9.52 | 17.07 | 25.16 | 32.47 | 47.10 | 52.83 | 54.39 | 54.16 | 46.59 | a | 34.84 | 21.97 | 3.68 | 33.31 | ||||||||||||
1993 | -1.63 | a | 1.89 | 15.55 | 32.70 | 45.45 | 53.27 | 58.10 | 58.55 | 43.40 | 32.94 | 18.73 | 7.13 | 30.51 | ||||||||||||
1994 | -12.61 | -3.54 | 21.65 | 32.27 | 48.00 | 57.77 | 58.57 | a | 57.03 | 51.17 | 41.35 | 26.87 | 13.94 | 32.70 | ||||||||||||
1995 | 2.42 | 2.39 | 21.29 | 29.07 | 44.55 | 60.73 | 59.90 | 62.68 | 47.40 | 37.39 | 14.77 | 5.74 | 32.36 | |||||||||||||
1996 | -8.06 | 3.48 | 10.48 | 28.90 | 43.16 | 57.43 | 57.90 | 59.84 | 50.20 | 37.29 | 11.47 | -0.26 | 29.32 | |||||||||||||
1997 | -5.74 | 5.07 | 13.45 | 29.53 | 41.52 | 58.69 | a | 61.45 | 58.16 | 52.23 | 38.48 | 18.50 | 18.39 | 32.48 | ||||||||||||
1998 | 5.61 | 23.82 | 21.35 | 38.13 | 51.13 | 54.30 | 61.26 | 61.74 | 53.73 | 40.52 | 26.47 | 10.87 | 37.41 | |||||||||||||
1999 | 0.39 | 15.82 | 24.74 | 36.50 | 48.65 | 56.87 | 62.65 | 59.39 | 47.63 | 34.71 | 28.80 | 13.58 | 35.81 | |||||||||||||
2000 | 2.10 | 13.66 | 26.90 | b | 31.31 | a | 45.97 | ----- | z | 59.54 | c | 58.50 | e | 45.50 | b | 38.10 | 19.75 | b | -10.11 | c | 30.11 | a | ||||
2001 | 6.00 | b | -8.83 | d | 13.52 | b | 32.79 | b | 46.59 | b | 56.76 | a | 61.71 | 59.80 | a | 48.27 | 33.94 | 31.66 | a | 13.17 | a | 32.95 | ||||
2002 | 5.80 | a | 11.70 | a | 8.65 | 29.38 | a | 37.62 | b | 58.18 | b | 63.37 | a | 58.39 | c | 51.59 | a | 30.29 | 18.79 | a | 11.68 | 32.12 | ||||
2003 | -0.43 | a | -1.96 | a | 13.06 | 34.23 | 46.07 | b | 56.20 | 60.00 | a | 61.74 | 47.27 | ----- | z | 18.03 | 12.81 | 31.55 | a | |||||||
2004 | -4.73 | a | 4.48 | 21.13 | 30.10 | 42.07 | c | 50.25 | b | 58.32 | 50.97 | 51.79 | b | 36.00 | 25.07 | a | 9.55 | 31.25 | ||||||||
2005 | -4.06 | 8.68 | c | 17.13 | a | 36.14 | b | 43.67 | a | 59.81 | c | 61.13 | 57.03 | a | 51.83 | 39.45 | 25.53 | 8.77 | 33.76 | |||||||
2006 | 16.19 | -1.56 | a | 21.00 | 37.76 | a | 47.40 | a | 56.59 | a | 62.07 | a | 58.48 | 47.17 | 31.77 | a | 22.07 | a | 15.26 | 34.52 | ||||||
2007 | 4.14 | c | -4.11 | 21.97 | 31.20 | 47.28 | b | 56.79 | a | 58.65 | 56.31 | b | 48.66 | a | 38.39 | 19.80 | 0.33 | a | 31.62 | |||||||
2008 | -4.71 | c | -2.97 | 13.00 | 28.70 | 40.48 | 53.42 | d | 53.96 | h | 58.48 | ----- | z | 36.06 | 23.18 | b | -3.39 | c | 24.23 | b | ||||||
2009 | -12.39 | 1.33 | a | 15.23 | a | 29.59 | a | 42.17 | b | 52.87 | 55.58 | 55.53 | a | 53.87 | 33.10 | 29.50 | 3.93 | a | 30.03 | |||||||
2010 | 0.61 | 1.43 | 25.77 | a | 39.43 | 48.30 | a | 54.12 | n | 60.41 | d | 59.61 | c | 45.48 | a | 37.87 | 20.23 | 3.07 | a | 31.11 | a | |||||
2011 | -5.07 | a | 1.89 | 12.33 | a | 32.76 | a | 45.55 | 55.48 | a | 63.33 | a | 58.61 | 46.90 | 39.59 | b | 21.77 | 13.87 | 32.25 | |||||||
2012 | 6.93 | a | 10.07 | b | 28.50 | c | 35.38 | a | 48.86 | b | 58.10 | 65.23 | a | 56.48 | 44.80 | 33.84 | 22.17 | 7.52 | 34.82 | |||||||
2013 | 0.81 | 1.08 | b | 6.23 | 23.40 | 44.87 | 56.27 | 60.81 | 58.58 | 53.13 | 36.10 | 17.67 | -4.81 | 29.51 | ||||||||||||
2014 | -10.19 | -10.25 | 10.77 | 28.97 | 45.90 | 57.27 | 57.94 | 59.84 | l | 48.65 | d | 36.29 | 11.97 | 12.45 | 26.34 | a | ||||||||||
2015 | 4.45 | -5.79 | 19.19 | 33.07 | 44.94 | 56.87 | 60.94 | 57.48 | 53.47 | 38.50 | a | 27.73 | 17.81 | 34.05 | ||||||||||||
2016 | 4.65 | 13.28 | 27.45 | 32.43 | 48.00 | 56.73 | 60.16 | 59.39 | 51.60 | 38.43 | a | 33.07 | 6.10 | 35.94 | ||||||||||||
2017 | 5.84 | 14.04 | ----- | z | 33.80 | 45.32 | 56.07 | 60.71 | 55.84 | ----- | z | 36.26 | 18.80 | 4.42 | 33.11 | b | ||||||||||
2018 | 1.10 | -4.50 | 20.23 | 24.43 | 49.87 | 60.33 | 60.20 | a | 58.20 | a | ----- | z | 30.58 | 14.14 | a | ----- | z | 31.46 | b | |||||||
2019 | -2.65 | -8.43 | ----- | z | ----- | z | 41.48 | 56.73 | 62.35 | 55.71 | 51.62 | a | 33.26 | 19.27 | 6.97 | 31.63 | b | |||||||||
2020 | 2.84 | 2.61 | a | 20.42 | 28.93 | 43.81 | 60.28 | a | 62.77 | 60.16 | 47.70 | 29.10 | 22.07 | a | 11.81 | 32.71 | ||||||||||
2021 | 11.58 | -3.07 | 24.61 | 30.57 | 45.06 | 59.23 | 63.35 | 60.00 | 52.13 | 41.90 | 24.21 | a | 7.13 | 34.73 | ||||||||||||
2022 | ----- | z | -5.79 | 16.10 | 27.07 | ----- | z | 58.70 | 61.90 | 58.87 | 50.90 | 36.32 | 20.57 | 1.52 | 32.62 | b | ||||||||||
2023 | 5.03 | 1.57 | 6.13 | ----- | z | ----- | z | ----- | z | 57.70 | a | 59.77 | 55.57 | 38.58 | 23.20 | 22.45 | 30.00 | c | ||||||||
2024 | 7.94 | 18.24 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 13.09 | j | ||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | -1.29 | 3.67 | 17.63 | 32.25 | 45.01 | 55.60 | 59.88 | 57.74 | 48.22 | 36.03 | 20.76 | 5.99 | 31.93 | |||||||||||||
S.D. | 7.38 | 8.18 | 6.54 | 3.50 | 3.67 | 2.98 | 2.41 | 2.52 | 3.26 | 3.17 | 4.95 | 7.36 | 2.18 | |||||||||||||
SKEW | 0.06 | 0.47 | -0.24 | 0.01 | 0.13 | -0.40 | -0.40 | -0.36 | -0.05 | 0.30 | 0.13 | -0.04 | 0.29 | |||||||||||||
MAX | 16.19 | 23.82 | 28.50 | 39.57 | 55.42 | 61.63 | 65.23 | 62.68 | 55.57 | 45.60 | 33.07 | 22.45 | 37.41 | |||||||||||||
MIN | -16.00 | -10.25 | 4.81 | 23.40 | 37.13 | 46.73 | 53.32 | 50.97 | 40.67 | 29.10 | 9.62 | -10.11 | 27.49 | |||||||||||||
YRS | 62 | 63 | 57 | 61 | 60 | 60 | 62 | 61 | 60 | 60 | 64 | 61 | 45 |