YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
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 | 12.04 | a | 25.17 | b | 28.10 | 39.61 | 53.23 | d | 56.45 | 56.81 | 47.30 | 35.97 | 22.10 | 5.48 | 34.75 | a | ||||||||
1962 | -3.48 | 4.11 | a | 17.48 | 28.83 | a | 49.40 | a | 53.40 | 55.48 | 55.06 | 44.67 | 39.03 | 26.77 | 9.35 | 31.68 | ||||||||||
1963 | -7.16 | 0.46 | 23.39 | 34.59 | a | 41.80 | a | 57.20 | 59.13 | 54.71 | 50.27 | 43.71 | 28.03 | -1.55 | 32.05 | |||||||||||
1964 | 7.52 | 9.14 | 11.65 | 33.13 | 46.29 | 53.03 | a | 60.06 | 53.48 | 46.33 | 35.55 | 23.10 | a | -0.53 | a | 31.56 | ||||||||||
1965 | -6.52 | -3.28 | c | 3.97 | 32.23 | 47.19 | 52.96 | b | 57.16 | 55.19 | 42.66 | a | 37.55 | 22.33 | 16.58 | 29.84 | ||||||||||
1966 | -10.13 | 0.46 | b | 24.25 | c | 29.41 | c | 38.58 | 53.90 | 61.35 | 54.23 | 44.97 | 32.47 | a | 18.33 | 6.17 | b | 29.50 | ||||||||
1967 | 1.84 | -7.29 | 17.32 | 32.43 | 37.29 | 52.90 | 55.68 | 52.13 | 44.93 | 33.42 | 19.93 | 10.10 | b | 29.22 | ||||||||||||
1968 | 0.65 | -0.93 | 24.27 | a | 34.67 | 42.52 | 53.23 | 57.97 | 56.03 | 47.57 | 39.94 | 25.10 | a | 6.97 | 32.33 | |||||||||||
1969 | -2.52 | 7.36 | 11.23 | 35.37 | 45.26 | 47.80 | 57.65 | 56.26 | 47.17 | 35.09 | i | 21.24 | a | 9.32 | 30.56 | a | ||||||||||
1970 | -6.52 | 2.21 | 11.16 | 31.47 | 43.32 | 57.10 | 59.55 | 55.97 | a | 47.47 | 37.71 | 22.13 | 6.58 | 30.68 | ||||||||||||
1971 | -6.84 | 6.25 | 15.84 | 33.47 | 40.90 | 57.90 | 54.10 | 52.58 | 46.77 | 40.13 | 22.17 | a | 7.06 | 30.86 | ||||||||||||
1972 | -8.13 | -3.79 | 13.52 | b | 29.73 | 47.81 | 50.60 | 55.77 | 56.71 | 45.30 | 32.29 | 24.63 | -2.26 | 28.52 | ||||||||||||
1973 | 2.93 | a | 8.50 | 29.84 | 32.77 | 41.74 | 55.30 | 58.29 | 60.65 | 47.07 | 40.68 | 24.27 | 8.48 | 34.21 | ||||||||||||
1974 | -0.58 | 1.75 | 17.23 | 32.60 | 41.94 | 50.93 | 60.48 | 52.74 | 39.43 | 34.87 | 23.17 | a | 11.90 | 30.54 | ||||||||||||
1975 | 0.00 | a | 3.14 | 8.81 | 28.97 | 46.55 | 54.97 | 61.35 | 55.90 | 44.77 | 37.27 | a | 23.17 | 6.66 | b | 30.96 | ||||||||||
1976 | -6.29 | 11.93 | 16.52 | 36.83 | a | 43.39 | 54.33 | 58.26 | 56.29 | 43.87 | 28.26 | d | 12.50 | -3.90 | 29.33 | |||||||||||
1977 | -13.13 | a | 4.94 | j | 24.52 | 37.52 | e | 52.13 | 53.80 | 59.42 | 52.23 | 48.60 | 35.52 | 19.80 | 3.40 | a | 33.98 | a | ||||||||
1978 | -7.68 | -3.64 | 13.23 | 32.52 | a | 46.97 | 51.63 | 57.32 | c | 55.61 | 50.40 | 35.28 | b | 18.46 | b | -1.87 | 29.02 | |||||||||
1979 | -13.55 | -5.11 | 16.97 | 28.67 | 39.52 | 51.05 | h | 56.00 | 54.20 | a | 46.37 | 33.19 | 20.17 | 13.50 | a | 26.36 | a | |||||||||
1980 | 0.93 | a | 0.28 | 11.06 | 31.85 | c | 42.13 | 47.97 | 52.10 | 56.06 | 45.53 | 30.97 | 22.70 | 7.00 | 29.05 | |||||||||||
1981 | 3.00 | a | 10.46 | 21.97 | 36.65 | d | 41.35 | 53.27 | 55.94 | 52.71 | 40.23 | 28.23 | 20.03 | 3.35 | 30.60 | |||||||||||
1982 | -13.80 | a | 1.44 | a | 16.73 | a | 29.17 | 49.37 | a | 46.63 | 58.61 | 52.71 | 45.47 | 35.39 | 16.69 | a | 11.43 | a | 29.15 | |||||||
1983 | 1.25 | c | 13.96 | c | 22.03 | 27.23 | 37.10 | 48.73 | 57.48 | 60.87 | 48.93 | 37.87 | 26.88 | d | -11.10 | b | 30.94 | |||||||||
1984 | -2.13 | a | 17.24 | 13.70 | a | 33.03 | a | 39.84 | 52.86 | a | 54.90 | 57.48 | 43.07 | 40.60 | a | 21.70 | 5.87 | 31.51 | ||||||||
1985 | -4.03 | a | 1.96 | b | 23.00 | b | 35.50 | 47.10 | 48.40 | 55.52 | 52.87 | a | 47.63 | 32.74 | 13.69 | a | -7.28 | b | 28.92 | |||||||
1986 | 4.97 | 2.46 | 20.72 | b | 36.33 | 45.03 | 52.90 | 59.71 | 51.32 | 48.10 | 34.97 | a | 14.64 | b | 11.32 | 31.87 | ||||||||||
1987 | 8.97 | ----- | z | 24.63 | a | 35.27 | 45.94 | 54.47 | 61.32 | 53.94 | 44.17 | 28.52 | 23.93 | a | 15.47 | a | 36.06 | a | ||||||||
1988 | -4.58 | -0.93 | 23.58 | 30.27 | 47.94 | 54.77 | 59.71 | 56.19 | 44.69 | a | 29.33 | a | 21.33 | 7.55 | 30.82 | |||||||||||
1989 | 6.81 | -4.54 | 15.06 | 30.37 | 43.03 | a | 49.47 | 58.13 | 53.13 | 44.13 | 32.10 | 16.03 | a | -5.13 | 28.22 | |||||||||||
1990 | 11.29 | 9.19 | b | 24.06 | 32.30 | 40.58 | 56.03 | 55.03 | a | 54.61 | 46.20 | 31.29 | 22.80 | 2.23 | 32.14 | |||||||||||
1991 | -0.62 | b | 11.19 | a | 21.94 | 35.73 | 48.77 | 57.83 | 57.42 | 54.84 | 45.07 | a | 29.87 | 13.23 | 6.03 | 31.78 | ||||||||||
1992 | 7.80 | a | 17.00 | 19.29 | 29.93 | 48.03 | a | 47.97 | 50.16 | 49.23 | 43.03 | 29.44 | d | 20.97 | 8.35 | 30.93 | ||||||||||
1993 | -1.00 | a | 2.39 | 13.74 | 28.20 | 43.90 | a | 52.40 | 59.21 | b | 55.40 | a | 38.25 | b | 31.27 | a | 17.90 | 8.24 | b | 29.16 | ||||||
1994 | -10.97 | -3.93 | a | 20.77 | 30.67 | 44.60 | a | 53.20 | 55.39 | 51.48 | 46.81 | c | 40.68 | 26.27 | 12.40 | a | 30.61 | |||||||||
1995 | 5.26 | 5.86 | 22.19 | 29.67 | 42.87 | a | 56.87 | 58.55 | 60.93 | a | 46.11 | b | 37.32 | 16.10 | 7.29 | 32.42 | ||||||||||
1996 | -5.79 | b | 5.14 | 13.07 | a | 27.64 | b | 42.48 | 54.03 | 55.26 | 55.03 | a | 48.11 | b | 35.43 | a | 15.50 | 3.26 | 29.10 | |||||||
1997 | -0.74 | 8.48 | a | 18.35 | 30.33 | 39.17 | a | 54.40 | 59.16 | 56.03 | a | 49.90 | 38.00 | 20.21 | b | 20.11 | c | 32.78 | ||||||||
1998 | 10.04 | c | 24.07 | a | 22.71 | 35.17 | 48.97 | 52.87 | 56.80 | a | 57.29 | 49.97 | 39.29 | 27.77 | 12.52 | 36.45 | ||||||||||
1999 | 1.84 | 15.93 | 22.03 | 35.59 | a | 48.35 | 54.63 | 61.77 | 57.13 | a | 46.63 | 34.48 | 28.57 | 13.19 | d | 35.01 | ||||||||||
2000 | 3.50 | a | 14.72 | 27.90 | 32.66 | a | 46.90 | 51.50 | 58.50 | c | 57.86 | c | 45.77 | d | 38.23 | a | 23.80 | -1.61 | c | 33.31 | ||||||
2001 | 10.36 | c | -1.44 | a | 16.87 | 35.97 | a | 46.57 | a | 55.29 | b | 58.15 | e | 59.29 | 48.03 | 35.90 | 33.40 | 16.97 | a | 34.61 | ||||||
2002 | 13.89 | c | 16.46 | b | 11.35 | 33.20 | 40.21 | c | 57.23 | 63.18 | c | 57.47 | a | 52.11 | b | 31.67 | a | 22.57 | 15.69 | b | 34.59 | |||||
2003 | 3.58 | 2.39 | 17.94 | 33.37 | 43.48 | 52.73 | 57.06 | 57.07 | a | ----- | z | 37.35 | 21.10 | a | 16.97 | b | 31.19 | a | ||||||||
2004 | -0.70 | a | 13.46 | c | 24.94 | 33.10 | a | 41.06 | 51.62 | a | 56.46 | c | 52.97 | 54.50 | 38.23 | 26.83 | 12.33 | a | 33.73 | |||||||
2005 | -1.71 | c | 15.54 | 19.13 | 36.27 | 46.46 | c | 59.50 | 60.75 | c | 56.26 | 51.97 | 38.60 | a | 25.43 | 12.48 | 35.06 | |||||||||
2006 | 19.58 | 5.68 | 25.23 | 39.17 | 48.39 | 54.41 | a | 61.53 | a | 58.23 | 45.82 | b | 33.39 | 24.97 | 18.65 | 36.25 | ||||||||||
2007 | 10.26 | 1.46 | 24.55 | b | 31.73 | 47.00 | a | 53.60 | 58.61 | 55.61 | 50.27 | 41.67 | a | 23.90 | a | 4.84 | 33.63 | |||||||||
2008 | 1.74 | 2.34 | 17.16 | 33.00 | q | 42.23 | 53.66 | a | 58.40 | a | 54.80 | a | 47.93 | b | 36.61 | 24.96 | b | 0.81 | 30.97 | a | ||||||
2009 | -6.55 | 9.30 | a | 19.39 | 34.00 | 42.94 | 52.24 | a | 53.77 | 54.55 | 51.20 | 34.13 | 30.17 | 9.33 | a | 32.04 | ||||||||||
2010 | 1.62 | b | 5.64 | 28.19 | 37.90 | 45.13 | 55.67 | ----- | z | ----- | z | ----- | z | 36.71 | 23.69 | a | 2.36 | c | 26.32 | c | ||||||
2011 | -1.48 | b | 3.36 | 12.93 | a | 32.63 | 44.81 | 54.44 | c | 63.13 | 57.23 | 46.23 | 39.03 | 25.30 | 17.06 | 32.89 | ||||||||||
2012 | 10.70 | a | 15.61 | a | 31.79 | b | 36.23 | 48.87 | a | 55.63 | 63.80 | a | 54.03 | a | 44.43 | 33.68 | 24.10 | 10.60 | a | 35.79 | ||||||
2013 | 4.62 | b | 5.22 | a | 14.26 | 28.37 | 44.55 | 54.77 | 59.61 | 55.68 | 50.40 | 37.27 | a | 20.33 | -0.33 | a | 31.23 | |||||||||
2014 | -7.87 | -6.56 | a | 11.74 | 29.97 | 45.32 | 55.97 | 57.48 | 58.77 | 49.23 | 36.52 | 14.21 | a | 16.52 | 30.11 | |||||||||||
2015 | 9.29 | -0.39 | 22.19 | 34.87 | 45.23 | 55.27 | 59.00 | 56.81 | 54.70 | 38.42 | 30.80 | 21.90 | 35.67 | |||||||||||||
2016 | 6.90 | 14.59 | 29.87 | 34.87 | 45.10 | 54.80 | 59.10 | 58.39 | 52.23 | 40.32 | 31.20 | 11.94 | 36.61 | |||||||||||||
2017 | 10.13 | 19.11 | 21.35 | 36.20 | 44.35 | 53.70 | 58.97 | 53.84 | 51.77 | 39.19 | 21.20 | 7.97 | 34.82 | |||||||||||||
2018 | 5.29 | 0.79 | 20.23 | 21.63 | 48.90 | 56.97 | 59.10 | 58.29 | 52.50 | 34.81 | 18.60 | 15.55 | 32.72 | |||||||||||||
2019 | 0.19 | 0.36 | 14.55 | 33.30 | 40.65 | 54.23 | 60.65 | 55.55 | 53.07 | 35.97 | 21.63 | 10.42 | 31.71 | |||||||||||||
2020 | 8.94 | 5.34 | 25.16 | 30.97 | 45.13 | 57.53 | 60.35 | 57.77 | 45.57 | 31.03 | 26.00 | 13.19 | 33.92 | |||||||||||||
2021 | 11.65 | -0.79 | 27.06 | 33.80 | 43.71 | 57.57 | 58.39 | 58.13 | 49.43 | 42.10 | 23.73 | 10.35 | 34.59 | |||||||||||||
2022 | -4.03 | -2.04 | 20.23 | 30.70 | 47.19 | 56.70 | 59.71 | 57.35 | 49.00 | 36.94 | 24.47 | 8.19 | 32.03 | |||||||||||||
2023 | 10.16 | 5.61 | 14.52 | 31.63 | 47.97 | 57.03 | 55.39 | 57.48 | 54.23 | 39.65 | 25.30 | 24.48 | 35.29 | |||||||||||||
2024 | 13.13 | 19.76 | 23.94 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 18.94 | i | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 1.14 | 5.59 | 19.37 | 32.53 | 44.46 | 53.81 | 58.14 | 55.64 | 47.35 | 35.77 | 22.41 | 8.26 | 32.04 | |||||||||||||
S.D. | 7.54 | 7.37 | 5.78 | 3.20 | 3.35 | 2.78 | 2.60 | 2.39 | 3.51 | 3.72 | 4.48 | 7.17 | 2.30 | |||||||||||||
SKEW | 0.03 | 0.43 | -0.15 | -0.49 | -0.17 | -0.58 | -0.38 | -0.07 | -0.04 | -0.25 | -0.12 | -0.32 | 0.29 | |||||||||||||
MAX | 19.58 | 24.07 | 31.79 | 39.17 | 52.13 | 59.50 | 63.80 | 60.93 | 54.70 | 43.71 | 33.40 | 24.48 | 36.61 | |||||||||||||
MIN | -13.80 | -7.29 | 3.97 | 21.63 | 37.10 | 46.63 | 50.16 | 49.23 | 38.25 | 28.23 | 12.50 | -11.10 | 28.22 | |||||||||||||
YRS | 63 | 62 | 64 | 62 | 63 | 62 | 62 | 62 | 61 | 62 | 63 | 63 | 55 |