YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1957 | ----- | z | ----- | z | ----- | z | 30.53 | 40.77 | 47.74 | g | 58.39 | 51.71 | 41.25 | b | 32.48 | 16.67 | 3.03 | 34.35 | d | |||||||
1958 | 1.03 | -4.93 | 15.52 | 27.90 | 37.37 | a | 44.84 | e | 53.61 | 51.10 | 40.78 | c | 32.94 | 13.60 | -8.58 | 25.43 | ||||||||||
1959 | -15.03 | -14.86 | 7.65 | 27.07 | 40.64 | c | 52.93 | 56.00 | 54.94 | 43.36 | b | 29.00 | a | 6.40 | 10.19 | 24.86 | ||||||||||
1960 | -6.16 | -3.31 | -1.45 | 27.93 | 40.71 | 49.53 | 54.52 | 54.94 | 43.43 | 31.16 | 18.83 | -5.97 | 25.35 | |||||||||||||
1961 | -11.55 | 2.57 | 16.16 | 23.87 | 37.55 | 50.63 | 53.66 | b | 52.77 | 42.73 | 31.42 | 15.80 | -3.68 | 25.99 | ||||||||||||
1962 | -13.43 | c | -10.18 | 8.50 | a | 22.77 | 43.45 | 54.27 | 54.63 | a | 52.81 | 41.33 | 34.97 | 21.77 | -0.43 | a | 25.87 | |||||||||
1963 | -14.68 | -8.50 | 10.19 | 30.03 | a | 38.17 | b | 55.97 | 56.35 | h | 52.58 | 44.90 | 38.87 | a | 18.70 | -7.52 | 23.52 | a | ||||||||
1964 | -2.48 | b | -4.00 | 0.61 | 28.38 | a | 43.66 | b | 50.59 | a | 58.63 | a | 50.81 | 40.30 | 31.13 | 17.93 | -7.06 | 25.71 | ||||||||
1965 | -16.13 | -11.32 | -2.97 | 29.70 | 41.13 | 50.57 | 53.84 | 50.27 | a | 37.07 | 32.84 | 12.83 | a | 7.03 | 23.74 | |||||||||||
1966 | -24.29 | -13.04 | 13.81 | 27.63 | 37.60 | a | 52.73 | 59.03 | a | 53.14 | b | 42.67 | 28.65 | 8.34 | a | -4.87 | 23.45 | |||||||||
1967 | -9.61 | -19.82 | 5.00 | 24.90 | 35.55 | 48.87 | 51.26 | 47.87 | 39.57 | 26.87 | 14.27 | 0.94 | 22.14 | |||||||||||||
1968 | -12.47 | a | -11.83 | 13.19 | 27.60 | 35.74 | d | 50.23 | 52.35 | 50.16 | 42.93 | 32.87 | 20.37 | 0.03 | 25.10 | |||||||||||
1969 | -14.16 | -2.00 | 0.16 | 31.33 | 40.87 | 43.76 | a | 52.45 | 55.52 | 44.47 | 28.94 | 19.17 | 6.81 | 25.61 | ||||||||||||
1970 | -10.61 | -6.71 | 0.13 | 26.43 | 39.10 | 55.90 | 58.65 | 51.52 | 42.73 | 33.23 | 17.43 | -5.19 | 25.22 | |||||||||||||
1971 | -16.61 | -1.29 | 9.87 | 29.17 | 38.45 | 53.63 | 51.13 | 51.61 | 42.83 | 34.90 | 17.87 | 0.00 | a | 25.96 | ||||||||||||
1972 | -13.80 | a | -9.62 | 8.84 | 28.13 | 47.10 | 50.83 | 52.39 | 54.48 | 40.37 | 29.68 | 17.97 | -5.81 | 25.05 | ||||||||||||
1973 | -1.27 | a | 0.57 | 25.47 | a | 28.30 | 41.71 | 50.73 | 52.52 | 55.52 | 41.73 | 38.71 | 15.77 | 1.94 | 29.31 | |||||||||||
1974 | -10.87 | -4.46 | 6.71 | 28.90 | 40.68 | 51.23 | 58.58 | 51.84 | 39.80 | 33.81 | 21.03 | 10.87 | 27.34 | |||||||||||||
1975 | -2.42 | -3.00 | 4.97 | 25.67 | 43.77 | 51.97 | 60.61 | 54.35 | k | 40.90 | 34.77 | 20.73 | -0.94 | 25.19 | a | |||||||||||
1976 | -9.13 | a | 4.76 | 5.32 | 31.60 | 38.68 | 52.87 | 54.71 | 53.23 | 39.60 | 25.23 | 11.60 | -8.68 | 24.98 | ||||||||||||
1977 | -14.52 | 2.89 | 19.35 | 31.10 | 50.32 | 51.60 | 55.19 | 43.87 | 44.83 | a | 32.80 | a | 13.23 | -4.13 | a | 27.21 | ||||||||||
1978 | -12.90 | -10.07 | a | 5.74 | d | 30.53 | 46.77 | 50.03 | 55.45 | 52.19 | 46.93 | 32.81 | 10.38 | a | -8.03 | 24.99 | ||||||||||
1979 | -19.81 | -13.61 | 8.84 | 22.97 | 37.74 | 50.40 | 57.24 | b | 48.90 | 42.86 | b | 28.77 | 15.23 | 9.10 | 24.05 | |||||||||||
1980 | -8.74 | -5.21 | a | 4.13 | 31.90 | 44.50 | a | 48.87 | 53.61 | 50.19 | 42.93 | 30.52 | 20.97 | -2.32 | 25.94 | |||||||||||
1981 | -2.71 | 7.18 | 19.65 | 29.93 | 39.55 | 48.77 | 53.29 | 51.87 | 38.13 | 28.19 | 21.67 | -2.13 | a | 27.78 | ||||||||||||
1982 | -25.94 | -7.64 | 8.35 | 24.60 | 44.29 | 45.67 | 56.23 | 51.84 | 42.73 | d | 34.30 | h | 14.29 | f | 6.80 | f | 26.68 | c | ||||||||
1983 | 2.26 | 8.26 | a | 19.21 | b | 27.60 | 36.23 | 49.90 | 60.13 | 57.26 | 43.47 | ----- | z | 22.41 | a | -11.00 | 28.70 | a | ||||||||
1984 | -4.38 | b | 14.96 | a | 12.84 | 34.21 | b | 39.67 | a | 54.50 | 56.97 | 56.97 | 39.83 | 36.39 | 18.03 | -3.26 | 29.73 | |||||||||
1985 | -7.32 | -4.96 | 20.06 | 32.53 | 45.48 | 47.87 | 55.10 | 51.63 | a | 43.30 | 31.74 | 6.67 | -10.71 | 25.95 | ||||||||||||
1986 | 0.45 | -1.64 | 18.29 | 33.03 | 45.73 | a | 52.10 | 58.32 | 49.70 | a | 44.53 | 33.06 | 10.33 | 6.42 | 29.19 | |||||||||||
1987 | 1.87 | 14.82 | 19.19 | 34.67 | 46.71 | 54.00 | 58.87 | 52.65 | 46.37 | 29.03 | 22.27 | 12.29 | 32.73 | |||||||||||||
1988 | -8.27 | a | -9.41 | b | 16.52 | 29.33 | 47.61 | 55.87 | 56.17 | b | 55.97 | 43.53 | 28.74 | 19.13 | 0.94 | 28.01 | ||||||||||
1989 | -2.94 | -12.86 | 7.37 | a | 27.00 | 43.94 | 50.37 | 59.94 | 54.29 | 42.77 | 31.03 | 11.33 | -8.90 | 25.28 | ||||||||||||
1990 | 6.35 | 2.04 | 18.87 | 28.72 | a | 39.10 | 53.37 | 54.68 | 53.87 | 44.97 | 30.00 | 17.53 | -3.73 | a | 28.81 | |||||||||||
1991 | -9.84 | 6.18 | 15.97 | 33.50 | 47.77 | 55.23 | 56.90 | 56.29 | 43.60 | 28.48 | 12.37 | 4.94 | 29.28 | |||||||||||||
1992 | 4.55 | 9.21 | 16.68 | 27.48 | a | 44.55 | 49.90 | 51.00 | 50.29 | 43.27 | 31.39 | 20.83 | a | -0.87 | 29.02 | |||||||||||
1993 | -4.77 | -2.46 | 14.84 | 29.10 | 42.55 | 50.03 | 56.45 | 55.97 | 41.83 | 29.27 | a | 15.00 | a | 5.52 | 27.78 | |||||||||||
1994 | -12.19 | -7.25 | 19.94 | 29.67 | 43.90 | 55.40 | 56.39 | 53.77 | 49.80 | 40.55 | 24.87 | 12.52 | 30.61 | |||||||||||||
1995 | 1.97 | -3.07 | 19.23 | a | 26.83 | 43.23 | 59.07 | 58.61 | 58.13 | 45.17 | 35.71 | 11.17 | 0.35 | 29.70 | ||||||||||||
1996 | -14.65 | -1.21 | 4.07 | a | 23.76 | a | 43.35 | 56.50 | 57.29 | 58.45 | 46.80 | 33.74 | 9.30 | -6.31 | b | 25.93 | ||||||||||
1997 | -11.39 | -3.29 | 5.06 | 24.00 | 37.33 | a | 54.30 | 59.13 | 55.00 | 49.00 | 36.35 | 17.43 | 15.87 | 28.23 | ||||||||||||
1998 | 2.71 | 21.57 | 15.03 | 32.73 | 45.55 | 50.33 | 59.23 | 59.03 | 49.50 | 38.94 | 22.83 | 5.87 | 33.61 | |||||||||||||
1999 | -4.00 | 10.93 | 18.71 | 34.97 | 47.65 | 54.40 | 59.45 | 56.55 | 46.00 | 33.06 | 26.93 | 11.68 | 33.03 | |||||||||||||
2000 | -1.97 | 11.17 | 24.74 | 30.90 | 44.42 | 51.70 | 58.68 | ----- | z | 44.60 | 36.48 | 16.40 | -12.66 | b | 27.68 | a | ||||||||||
2001 | 1.48 | -4.18 | 15.19 | 33.63 | 45.84 | 54.93 | 59.68 | 58.32 | 47.77 | 33.90 | 30.03 | 13.19 | 32.48 | |||||||||||||
2002 | 6.42 | 11.96 | 7.77 | a | 28.53 | 37.42 | 58.30 | 62.71 | 56.81 | 50.27 | 28.00 | 16.17 | 11.71 | 31.34 | ||||||||||||
2003 | -2.20 | a | -5.86 | 11.68 | 30.77 | 42.57 | a | 50.93 | 54.23 | 58.06 | 45.80 | 35.19 | 14.97 | a | 7.14 | b | 28.61 | |||||||||
2004 | -10.62 | b | 6.69 | 15.29 | 30.41 | a | 39.03 | 47.80 | 54.87 | 48.29 | 50.63 | 35.16 | 23.24 | a | 3.65 | 28.70 | ||||||||||
2005 | -8.81 | 4.50 | 11.81 | 34.83 | 43.00 | 56.70 | 57.90 | 53.94 | 47.67 | 36.87 | 22.53 | 11.39 | 31.03 | |||||||||||||
2006 | 15.74 | -2.93 | 19.00 | 36.23 | 45.68 | 51.67 | 57.29 | 53.03 | 45.03 | 30.94 | 20.40 | 12.35 | 32.04 | |||||||||||||
2007 | 1.84 | -5.96 | 19.45 | 27.80 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 37.13 | 20.37 | 0.74 | 14.48 | e | |||||||
2008 | -3.97 | ----- | z | 12.29 | 27.93 | a | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 12.08 | i | ||
2009 | -11.29 | 1.14 | 14.00 | 31.90 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 32.65 | 26.31 | a | 0.61 | 13.62 | e | ||||||
2010 | 1.19 | -0.11 | 25.48 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 20.24 | a | ----- | z | 11.70 | h | |||
2011 | -12.97 | -2.07 | 7.32 | 31.50 | h | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 15.56 | n | 10.71 | 0.75 | h | ||||
2012 | 4.90 | 6.03 | 15.81 | o | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 17.80 | 2.58 | 7.83 | h | ||||
2013 | -5.94 | -2.21 | 5.19 | 22.43 | b | 41.68 | 46.62 | q | ----- | z | ----- | z | ----- | z | ----- | z | 9.80 | y | -8.12 | w | 12.23 | g | ||||
2014 | -20.32 | l | -8.86 | u | -10.00 | y | ----- | 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 | 54.03 | 57.35 | 55.32 | 48.50 | 38.74 | 19.97 | 3.26 | 39.60 | e | |||||||
2022 | -10.71 | -13.11 | 10.94 | 25.67 | 46.06 | 54.73 | 59.39 | 56.42 | 47.10 | 34.13 | 17.40 | -0.13 | 27.32 | |||||||||||||
2023 | 2.10 | -2.14 | 5.23 | 25.23 | 47.23 | 58.83 | 54.00 | 55.90 | 50.63 | 35.16 | 19.23 | 20.00 | 30.95 | |||||||||||||
2024 | 4.10 | 13.59 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 8.84 | j | ||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | -6.42 | -1.54 | 11.95 | 29.01 | 42.25 | 52.12 | 56.32 | 53.48 | 44.02 | 32.78 | 17.54 | 1.62 | 27.62 | |||||||||||||
S.D. | 8.14 | 8.58 | 6.97 | 3.36 | 3.69 | 3.34 | 2.78 | 3.13 | 3.26 | 3.46 | 4.99 | 7.75 | 2.82 | |||||||||||||
SKEW | 0.07 | 0.44 | -0.10 | 0.04 | -0.01 | -0.11 | -0.09 | -0.44 | 0.28 | 0.15 | -0.14 | 0.22 | 0.38 | |||||||||||||
MAX | 15.74 | 21.57 | 25.48 | 36.23 | 50.32 | 59.07 | 62.71 | 59.03 | 50.63 | 40.55 | 30.03 | 20.00 | 33.61 | |||||||||||||
MIN | -25.94 | -19.82 | -2.97 | 22.43 | 35.55 | 43.76 | 51.00 | 43.87 | 37.07 | 25.23 | 6.40 | -12.66 | 22.14 | |||||||||||||
YRS | 59 | 58 | 57 | 56 | 53 | 52 | 52 | 51 | 53 | 53 | 56 | 56 | 46 |