YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1957 | ----- | z | ----- | z | ----- | z | 39.80 | 53.08 | 59.04 | g | 70.24 | 63.89 | 53.17 | c | 43.11 | 25.38 | 14.58 | 45.41 | d | |||||||
1958 | 11.92 | a | 7.38 | 26.92 | 41.60 | 52.62 | a | 56.54 | e | 64.34 | 63.84 | 53.39 | c | 44.39 | 24.58 | 2.21 | 37.48 | |||||||||
1959 | -3.63 | -0.38 | 20.84 | 37.95 | 52.33 | d | 64.67 | 67.39 | 66.85 | 54.29 | b | 37.53 | a | 15.93 | 19.71 | 36.12 | ||||||||||
1960 | 4.92 | 8.05 | 11.56 | 37.27 | 52.85 | 60.45 | 66.95 | 67.00 | 56.45 | 43.65 | 27.30 | 5.68 | 36.84 | |||||||||||||
1961 | 0.69 | 13.45 | 26.77 | 34.18 | 50.71 | 65.50 | 66.48 | b | 68.10 | 53.73 | 43.44 | 25.20 | 5.45 | 37.81 | ||||||||||||
1962 | -1.45 | c | 2.23 | 19.69 | b | 33.78 | 53.05 | 63.03 | 65.07 | a | 65.18 | 52.53 | 47.53 | 29.71 | a | 10.95 | a | 36.78 | ||||||||
1963 | -4.44 | 3.93 | 23.56 | 40.62 | a | 49.72 | b | 66.17 | 68.27 | i | 65.47 | 58.07 | 53.65 | a | 30.07 | 2.53 | 35.40 | a | ||||||||
1964 | 10.30 | c | 10.07 | 13.89 | 38.98 | a | 56.57 | d | 60.86 | a | 69.93 | b | 61.66 | 51.95 | 43.02 | 27.64 | a | 1.84 | 37.23 | |||||||
1965 | -3.40 | 1.80 | a | 10.10 | 37.97 | 52.05 | 61.33 | 65.15 | 63.10 | a | 46.45 | 44.65 | 22.57 | a | 16.81 | 34.88 | ||||||||||
1966 | -11.87 | 1.32 | 24.35 | 35.93 | 47.55 | b | 62.90 | d | 70.30 | c | 64.38 | b | 55.52 | 41.27 | 19.12 | a | 6.73 | 34.79 | ||||||||
1967 | 2.97 | -4.39 | 18.90 | a | 34.78 | 46.98 | 60.77 | 65.06 | 63.00 | 56.00 | 39.55 | 24.33 | 11.08 | 34.92 | ||||||||||||
1968 | 0.34 | b | 1.57 | 26.29 | 38.86 | l | 50.12 | e | 60.88 | 63.85 | 61.50 | 54.83 | 43.48 | 27.88 | 8.84 | 36.33 | a | |||||||||
1969 | -3.85 | 8.41 | a | 13.68 | c | 43.40 | 54.84 | 53.60 | i | 65.37 | 69.81 | 56.60 | 38.16 | 28.43 | 15.31 | 35.47 | a | |||||||||
1970 | -0.42 | 6.38 | 15.02 | 36.17 | 52.35 | 67.97 | 70.94 | 65.98 | 56.12 | 44.31 | 25.67 | 6.08 | 37.21 | |||||||||||||
1971 | -5.27 | 10.46 | 21.42 | 41.33 | 52.55 | 65.85 | 63.73 | 65.56 | 56.43 | 46.08 | 25.75 | 10.69 | b | 37.88 | ||||||||||||
1972 | -2.27 | a | 2.59 | 20.52 | 38.43 | 60.05 | a | 64.48 | 64.45 | 67.90 | 53.55 | 41.37 | 25.28 | a | 3.61 | 36.66 | ||||||||||
1973 | 10.07 | a | 12.93 | 34.72 | a | 40.80 | 54.90 | 65.03 | 66.82 | 69.02 | 54.68 | 50.10 | 24.17 | 10.32 | 41.13 | |||||||||||
1974 | 0.60 | a | 8.95 | 18.44 | 40.15 | 50.44 | 64.87 | 71.47 | 63.32 | a | 52.65 | 45.85 | 28.90 | 19.47 | 38.76 | |||||||||||
1975 | 8.40 | 8.25 | 16.42 | 34.32 | 56.32 | 63.10 | 71.42 | 64.89 | l | 53.38 | 46.39 | 29.60 | 9.69 | 36.12 | a | |||||||||||
1976 | 2.58 | a | 16.98 | 18.05 | 44.81 | a | 54.53 | 65.43 | a | 68.32 | 66.95 | 55.50 | 38.32 | 22.20 | 1.82 | 37.96 | ||||||||||
1977 | -4.56 | 13.71 | 29.95 | 46.23 | 64.31 | 64.24 | a | 68.42 | 57.84 | 53.84 | b | 44.45 | b | 21.62 | a | 4.93 | b | 38.75 | ||||||||
1978 | -3.53 | 2.33 | a | 18.19 | d | 39.55 | 58.66 | 62.18 | b | 66.34 | 64.74 | 58.82 | 44.84 | 20.21 | b | 2.94 | 36.27 | |||||||||
1979 | -8.32 | -1.80 | 20.72 | b | 32.88 | a | 47.08 | 61.73 | 68.91 | b | 62.00 | 56.77 | f | 39.65 | 23.28 | 18.52 | 33.15 | a | ||||||||
1980 | 3.18 | 6.02 | a | 17.34 | 47.18 | 60.90 | a | 63.83 | 68.50 | 63.53 | 55.50 | a | 40.71 | 29.53 | 8.27 | 38.71 | ||||||||||
1981 | 8.89 | 17.52 | 32.23 | 43.97 | 54.13 | 60.78 | 67.13 | 65.68 | 53.17 | 40.48 | 32.93 | 9.00 | a | 40.49 | ||||||||||||
1982 | -10.85 | 6.02 | a | 19.47 | 38.30 | 56.05 | 58.08 | 68.30 | a | 64.28 | a | 55.07 | g | 44.20 | h | 23.71 | f | 16.89 | i | 37.46 | d | |||||
1983 | 13.07 | c | 17.04 | d | 28.52 | d | 39.10 | a | 50.38 | a | 63.05 | a | 72.10 | e | 71.12 | b | 55.36 | a | ----- | z | 28.50 | c | -1.80 | a | 39.68 | a |
1984 | 6.48 | c | 23.26 | b | 23.32 | a | 46.83 | g | 53.34 | b | 64.98 | b | 68.67 | a | 70.63 | a | 52.23 | 45.73 | a | 26.45 | 6.37 | 40.13 | a | |||
1985 | 3.40 | 6.14 | 29.45 | 45.40 | a | 58.21 | b | 58.62 | 67.21 | 61.79 | b | 52.53 | 43.07 | b | 15.74 | a | -0.25 | a | 36.78 | |||||||
1986 | 9.85 | 8.14 | 29.50 | b | 43.53 | a | 58.66 | c | 64.14 | a | 68.73 | 62.82 | a | 54.08 | 44.21 | 18.83 | 15.53 | 39.84 | ||||||||
1987 | 11.10 | 22.30 | 27.44 | 48.38 | e | 59.15 | 66.65 | 69.50 | 64.18 | 58.02 | 40.10 | 31.03 | 18.58 | a | 43.03 | |||||||||||
1988 | 1.70 | a | 3.07 | b | 25.39 | 43.68 | 61.85 | 70.27 | 69.69 | b | 69.08 | 55.58 | 40.76 | 26.35 | 11.00 | 39.87 | ||||||||||
1989 | 8.45 | -0.46 | a | 17.15 | a | 38.02 | 56.87 | 62.68 | 72.08 | 67.52 | 56.70 | 44.52 | 21.15 | 1.34 | 37.17 | |||||||||||
1990 | 16.84 | 13.41 | 28.79 | 42.14 | a | 53.15 | 65.62 | 67.48 | 68.16 | 59.53 | 43.66 | 28.27 | 6.63 | a | 41.14 | |||||||||||
1991 | 1.37 | 17.32 | 27.66 | 46.22 | 59.50 | 67.03 | 67.85 | 69.27 | 55.15 | 38.98 | 20.27 | 14.24 | 40.41 | |||||||||||||
1992 | 14.26 | 18.67 | 26.63 | 37.97 | a | 58.03 | 60.52 | 61.21 | 62.50 | 54.67 | 43.42 | 25.19 | a | 7.63 | 39.22 | |||||||||||
1993 | 4.73 | 7.70 | 24.87 | 41.18 | 54.97 | 60.45 | 64.79 | b | 65.94 | 52.90 | 40.78 | a | 23.14 | a | 13.84 | 37.94 | ||||||||||
1994 | -3.84 | 3.73 | 28.88 | a | 41.70 | 57.10 | a | 65.78 | 65.82 | 65.02 | 60.57 | 49.29 | 31.72 | 19.73 | 40.46 | |||||||||||
1995 | 10.00 | 8.96 | 28.33 | a | 37.05 | 55.10 | 70.68 | 69.21 | 69.58 | 57.45 | 44.27 | 18.43 | 8.27 | 39.78 | ||||||||||||
1996 | -3.84 | 9.36 | 15.55 | a | 34.10 | a | 53.73 | 67.72 | 67.61 | 69.97 | 57.23 | 44.15 | 17.03 | 1.26 | b | 36.16 | ||||||||||
1997 | -2.19 | 8.83 | a | 16.23 | 34.23 | 48.22 | a | 66.18 | 69.74 | 67.47 | 61.52 | 45.85 | 23.93 | 22.79 | 38.57 | |||||||||||
1998 | 10.39 | 27.61 | 24.45 | 45.78 | a | 58.82 | a | 59.92 | 69.82 | 70.94 | 62.88 | 47.79 | 28.35 | 13.87 | 43.38 | |||||||||||
1999 | 4.92 | 21.12 | 29.23 | 45.33 | 57.55 | 65.00 | 71.10 | 67.34 | 55.57 | 43.69 | 36.72 | 20.87 | 43.20 | |||||||||||||
2000 | 8.56 | 22.64 | 35.84 | 42.43 | 57.00 | 62.02 | 70.13 | ----- | z | 56.92 | 47.95 | 22.60 | -4.55 | c | 38.32 | a | ||||||||||
2001 | 10.76 | 6.13 | a | 25.79 | 44.38 | 57.56 | 66.10 | 71.63 | 70.84 | 59.38 | 43.48 | 38.23 | 20.16 | 42.87 | ||||||||||||
2002 | 15.03 | 22.64 | 18.48 | a | 39.78 | 49.89 | 68.48 | 73.42 | 67.53 | 61.53 | a | 35.53 | 24.83 | 19.40 | 41.38 | |||||||||||
2003 | 6.72 | a | 5.88 | 23.29 | 44.52 | 55.88 | a | 63.25 | 67.06 | 70.27 | 57.08 | 47.23 | 22.34 | e | 17.06 | f | 42.14 | a | ||||||||
2004 | -0.74 | b | 16.75 | c | 25.06 | 41.50 | a | 49.94 | 59.30 | c | 65.92 | 59.16 | 61.70 | 44.37 | a | 32.45 | a | 13.85 | 39.10 | |||||||
2005 | 1.21 | 14.50 | 22.74 | 47.92 | 53.20 | a | 65.88 | 69.44 | 65.13 | 60.45 | 47.32 | 30.02 | 17.02 | 41.24 | ||||||||||||
2006 | 22.34 | 8.57 | 27.32 | 49.42 | 56.98 | 64.30 | 72.05 | 66.85 | 57.27 | 41.44 | 30.13 | 20.79 | 43.12 | |||||||||||||
2007 | 11.53 | 3.89 | 29.35 | 40.22 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 47.37 | 28.70 | 8.97 | 24.29 | e | |||||||
2008 | 6.47 | a | ----- | z | 22.26 | 40.07 | a | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 22.93 | i | |
2009 | -0.66 | 11.71 | 23.44 | 41.18 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 39.95 | 35.90 | a | 7.89 | 22.77 | e | ||||||
2010 | 9.58 | 11.79 | 34.95 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 28.78 | a | ----- | z | 21.27 | h | |||
2011 | -1.03 | 9.11 | 19.29 | 41.50 | h | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 24.31 | n | 19.74 | 11.78 | h | ||||
2012 | 14.56 | 17.24 | 27.84 | o | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 26.05 | 11.24 | 17.27 | h | ||||
2013 | 5.58 | a | 8.62 | 17.47 | 31.55 | b | 53.10 | 57.81 | q | ----- | z | ----- | z | ----- | z | ----- | z | 19.20 | y | -0.31 | w | 23.27 | g | |||
2014 | -8.06 | m | 3.00 | u | 1.92 | 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 | 68.23 | 70.82 | 67.40 | 60.08 | 48.53 | 28.10 | 11.60 | 50.68 | e | |||||||
2022 | -0.24 | -0.29 | 20.58 | 32.55 | 54.26 | 64.50 | 68.63 | 66.76 | 57.78 | 44.63 | 25.13 | 7.35 | 36.80 | |||||||||||||
2023 | 9.71 | 9.70 | 16.08 | 34.17 | 60.23 | 68.15 | 65.26 | 66.23 | 61.73 | 44.18 | 27.42 | 25.74 | 40.72 | |||||||||||||
2024 | 10.76 | 22.40 | 23.97 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 19.04 | i | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 4.03 | 9.85 | 23.04 | 40.26 | 54.67 | 63.93 | 68.11 | 65.96 | 56.13 | 43.74 | 26.05 | 10.66 | 38.85 | |||||||||||||
S.D. | 7.22 | 7.29 | 5.92 | 4.47 | 3.93 | 3.11 | 2.64 | 3.08 | 3.19 | 3.45 | 4.85 | 7.03 | 2.41 | |||||||||||||
SKEW | 0.05 | 0.41 | 0.03 | 0.01 | 0.06 | -0.10 | -0.24 | -0.33 | -0.03 | 0.13 | 0.07 | 0.06 | 0.28 | |||||||||||||
MAX | 22.34 | 27.61 | 35.84 | 49.42 | 64.31 | 70.68 | 73.42 | 71.12 | 62.88 | 53.65 | 38.23 | 25.74 | 43.38 | |||||||||||||
MIN | -11.87 | -4.39 | 10.10 | 31.55 | 46.98 | 56.54 | 61.21 | 57.84 | 46.45 | 35.53 | 15.74 | -4.55 | 34.79 | |||||||||||||
YRS | 59 | 58 | 58 | 54 | 53 | 51 | 52 | 51 | 51 | 53 | 56 | 55 | 41 |