YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1957 | ----- | z | ----- | z | ----- | z | 49.07 | 65.39 | 70.29 | f | 82.10 | 76.06 | 64.48 | c | 53.74 | 34.10 | 26.13 | 56.38 | d | |||||||
1958 | 22.63 | a | 19.68 | 38.32 | 55.30 | 68.26 | 68.24 | e | 75.06 | 76.58 | 66.00 | c | 55.84 | 35.57 | 13.00 | 49.54 | ||||||||||
1959 | 7.77 | 14.11 | 34.03 | 48.83 | 64.21 | c | 76.40 | 78.77 | 78.77 | 65.21 | b | 45.97 | 25.47 | 29.23 | 47.40 | |||||||||||
1960 | 16.00 | 19.41 | 24.58 | 46.60 | 65.00 | 71.37 | 79.39 | 79.06 | 69.47 | 56.13 | 35.77 | 17.32 | 48.34 | |||||||||||||
1961 | 12.94 | 24.32 | 37.39 | 44.50 | 63.87 | 80.37 | 79.31 | b | 83.42 | 64.73 | 55.45 | 34.60 | 14.58 | 49.62 | ||||||||||||
1962 | 10.54 | c | 14.64 | 30.77 | a | 44.80 | 62.65 | 71.80 | 75.50 | a | 77.55 | 63.73 | 60.10 | 37.45 | a | 22.33 | a | 47.65 | ||||||||
1963 | 5.81 | 16.36 | 36.94 | 51.21 | a | 61.28 | b | 76.37 | 80.48 | h | 78.35 | 71.23 | 68.84 | 41.43 | 12.58 | 47.31 | a | |||||||||
1964 | 22.43 | c | 24.14 | 27.16 | 49.80 | 70.21 | b | 71.14 | a | 81.23 | a | 72.52 | 63.60 | 54.90 | 36.59 | a | 10.74 | 48.70 | ||||||||
1965 | 9.32 | 14.78 | a | 23.16 | 46.23 | 62.97 | 72.10 | 76.45 | 76.42 | 55.83 | 56.45 | 32.17 | 26.58 | 46.04 | ||||||||||||
1966 | 0.55 | 15.68 | 34.90 | 44.23 | 58.07 | a | 74.50 | d | 81.55 | b | 75.00 | 68.37 | 53.90 | 29.90 | a | 18.32 | 46.25 | |||||||||
1967 | 15.55 | 11.04 | 32.53 | a | 44.67 | 58.42 | 72.67 | 78.87 | 78.13 | 72.43 | 52.23 | 34.40 | 21.23 | 47.68 | ||||||||||||
1968 | 13.43 | a | 14.97 | 39.39 | 51.39 | l | 62.37 | a | 71.53 | 75.35 | 72.84 | 66.73 | 54.10 | 35.40 | 17.65 | 47.61 | a | |||||||||
1969 | 6.45 | 19.70 | a | 28.07 | c | 55.47 | 68.81 | 64.05 | i | 78.29 | 84.10 | 68.73 | 47.39 | 37.70 | 23.81 | 47.14 | a | |||||||||
1970 | 9.77 | 19.46 | 29.90 | 45.90 | 65.61 | 80.03 | 83.23 | 80.45 | 69.50 | 55.39 | 33.90 | 17.35 | 49.21 | |||||||||||||
1971 | 6.06 | 22.21 | 32.97 | 53.50 | 66.65 | 78.07 | 76.32 | 79.52 | 70.03 | 57.26 | 33.63 | 20.73 | a | 49.75 | ||||||||||||
1972 | 9.29 | 14.79 | 32.19 | 48.73 | 72.67 | a | 78.13 | 76.52 | 81.32 | 66.73 | 53.06 | 32.59 | a | 13.03 | 48.26 | |||||||||||
1973 | 21.45 | 25.29 | 43.87 | 53.30 | 68.10 | 79.33 | 81.13 | 82.52 | 67.63 | 61.48 | 32.57 | 18.71 | 52.95 | |||||||||||||
1974 | 11.83 | a | 22.36 | 30.16 | 51.40 | 60.19 | 78.50 | 84.35 | 74.97 | a | 65.50 | 57.90 | 36.77 | 28.06 | 50.17 | |||||||||||
1975 | 19.23 | 19.50 | 27.87 | 42.97 | 68.87 | 74.23 | 82.23 | 75.97 | a | 65.87 | 58.00 | 38.47 | 20.32 | 49.46 | ||||||||||||
1976 | 14.29 | 29.21 | 30.77 | 57.97 | a | 70.39 | 78.00 | a | 81.94 | 80.68 | 71.40 | 51.42 | 32.80 | 12.32 | 50.93 | |||||||||||
1977 | 5.39 | 24.54 | 40.55 | 61.37 | 78.29 | 76.90 | a | 81.65 | 71.81 | 63.03 | a | 56.60 | a | 31.17 | a | 13.47 | a | 50.40 | ||||||||
1978 | 5.84 | 15.07 | 31.61 | 48.57 | 70.55 | 74.57 | b | 77.23 | 77.29 | 70.70 | 56.87 | 31.52 | a | 13.90 | 47.81 | |||||||||||
1979 | 3.16 | 10.00 | 31.52 | b | 43.31 | a | 56.42 | 73.07 | 80.68 | 75.10 | 71.35 | d | 50.52 | 31.33 | 27.94 | 46.20 | ||||||||||
1980 | 15.10 | 17.48 | 30.55 | 62.47 | 77.30 | a | 78.80 | 83.39 | 76.87 | 67.97 | a | 50.90 | 38.10 | 18.87 | 51.48 | |||||||||||
1981 | 20.48 | 27.86 | 44.81 | 58.00 | 68.71 | 72.80 | 80.97 | 79.48 | 68.20 | 52.77 | 44.20 | 20.19 | 53.21 | |||||||||||||
1982 | 4.23 | 19.41 | a | 30.58 | 52.00 | 67.81 | 70.50 | 80.33 | a | 76.40 | a | 68.35 | g | 54.09 | h | 33.28 | e | 27.83 | g | 48.28 | c | |||||
1983 | 24.18 | c | 28.40 | c | 37.38 | b | 51.21 | a | 64.60 | a | 76.03 | a | 84.81 | e | 84.90 | b | 67.48 | a | ----- | z | 34.93 | b | 7.70 | a | 51.06 | a |
1984 | 17.66 | b | 32.18 | a | 33.37 | a | 59.62 | f | 66.70 | a | 75.50 | b | 80.50 | a | 84.27 | a | 64.63 | 55.67 | a | 34.87 | 16.00 | 51.03 | a | |||
1985 | 14.13 | 17.25 | 38.84 | 58.14 | a | 70.79 | b | 69.37 | 79.32 | 72.37 | a | 61.77 | 54.28 | b | 24.66 | a | 10.07 | a | 47.58 | |||||||
1986 | 19.26 | 17.93 | 40.52 | b | 54.14 | a | 70.86 | b | 75.90 | a | 79.13 | 76.10 | 63.63 | 55.35 | 27.33 | 24.65 | 50.40 | |||||||||
1987 | 20.32 | 29.79 | 35.68 | 63.28 | e | 71.58 | 79.30 | 80.13 | 75.71 | 69.67 | 51.16 | 39.80 | 24.57 | a | 53.41 | |||||||||||
1988 | 11.68 | 16.72 | 34.26 | 58.03 | 76.10 | 84.67 | 83.65 | 82.19 | 67.63 | 52.77 | 33.57 | 21.06 | 51.86 | |||||||||||||
1989 | 19.84 | 11.44 | a | 26.97 | 49.03 | 69.81 | 75.00 | 84.23 | 80.74 | 70.63 | 58.00 | 30.97 | 11.58 | 49.02 | ||||||||||||
1990 | 27.32 | 24.79 | 38.71 | 55.00 | 67.19 | 77.87 | 80.29 | 82.45 | 74.10 | 57.32 | 39.00 | 17.26 | 53.44 | |||||||||||||
1991 | 12.58 | 28.46 | 39.35 | 58.93 | 71.23 | 78.83 | 78.81 | 82.26 | 66.70 | 49.48 | 28.17 | 23.55 | 51.53 | |||||||||||||
1992 | 23.97 | 28.14 | 36.58 | 48.73 | 71.52 | 71.13 | 71.42 | 74.71 | 66.07 | 55.45 | 29.53 | 16.13 | 49.45 | |||||||||||||
1993 | 14.23 | 17.86 | 34.90 | 53.27 | 67.39 | 70.87 | 73.21 | b | 75.90 | 63.97 | 52.39 | 31.57 | 22.16 | 48.14 | ||||||||||||
1994 | 4.52 | 14.71 | 38.00 | a | 53.73 | 70.30 | a | 76.17 | 75.26 | 76.26 | 71.33 | 58.03 | 38.57 | 26.94 | 50.32 | |||||||||||
1995 | 18.03 | 21.00 | 36.81 | 47.27 | 66.97 | 82.30 | 79.81 | 81.03 | 69.73 | 52.84 | 25.70 | 16.19 | 49.81 | |||||||||||||
1996 | 6.97 | 19.93 | 27.13 | 44.40 | 64.10 | 78.93 | 77.94 | 81.48 | 67.67 | 54.55 | 24.77 | 9.81 | 46.47 | |||||||||||||
1997 | 7.00 | 20.07 | a | 27.39 | 44.47 | 59.10 | a | 78.07 | 80.35 | 79.94 | 74.03 | 55.35 | 30.43 | 29.71 | 48.83 | |||||||||||
1998 | 18.06 | 33.64 | 33.87 | 58.83 | a | 72.23 | a | 69.50 | 80.42 | 82.84 | 76.27 | 56.65 | 33.87 | 21.87 | 53.17 | |||||||||||
1999 | 13.84 | 31.32 | 39.74 | 55.70 | 67.45 | 75.60 | 82.74 | 78.13 | 65.13 | 54.32 | 46.50 | 30.06 | 53.38 | |||||||||||||
2000 | 19.10 | 34.10 | 46.94 | 53.97 | 69.58 | 72.33 | 81.58 | ----- | z | 69.23 | 59.42 | 28.80 | 3.67 | a | 48.97 | a | ||||||||||
2001 | 20.03 | 16.11 | a | 36.39 | 55.13 | 69.29 | 77.27 | 83.58 | 83.35 | 71.00 | 53.06 | 46.43 | 27.13 | 53.23 | ||||||||||||
2002 | 23.65 | 33.32 | 29.58 | 51.03 | 62.35 | 78.67 | 84.13 | 78.26 | 72.55 | a | 43.06 | 33.50 | 27.10 | 51.43 | ||||||||||||
2003 | 15.77 | 17.61 | 34.90 | 58.27 | 69.19 | 75.57 | 79.90 | 82.48 | 68.37 | 59.26 | 29.96 | d | 27.74 | d | 51.59 | |||||||||||
2004 | 8.61 | 24.96 | c | 34.84 | 52.63 | 60.84 | 70.93 | c | 76.97 | 70.03 | 72.77 | 53.47 | a | 41.80 | 24.06 | 49.33 | ||||||||||
2005 | 11.23 | 24.50 | 33.68 | 61.00 | 63.10 | a | 75.07 | 80.97 | 76.32 | 73.23 | 57.77 | 37.50 | 22.65 | 51.42 | ||||||||||||
2006 | 28.94 | 20.07 | 35.65 | 62.60 | 68.29 | 76.93 | 86.81 | 80.68 | 69.50 | 51.94 | 39.87 | 29.23 | 54.21 | |||||||||||||
2007 | 21.23 | 13.75 | 39.26 | 52.63 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 57.61 | 37.03 | 17.19 | 34.10 | e | |||||||
2008 | 16.47 | a | ----- | z | 32.23 | 51.73 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 33.48 | i | ||
2009 | 9.97 | 22.29 | 32.87 | 50.47 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 47.26 | 45.83 | 15.16 | 31.98 | e | |||||||
2010 | 17.97 | 23.68 | 44.42 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 37.10 | ----- | z | 30.79 | h | ||||
2011 | 10.90 | 20.29 | 31.26 | 51.50 | h | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 33.06 | n | 28.77 | 22.81 | h | ||||
2012 | 24.23 | 28.45 | 39.88 | o | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 34.30 | 19.90 | 26.72 | h | ||||
2013 | 16.43 | a | 19.46 | 29.74 | 40.55 | a | 64.52 | 69.00 | q | ----- | z | ----- | z | ----- | z | ----- | z | 28.60 | y | 7.50 | w | 34.14 | g | |||
2014 | 4.06 | m | 14.86 | u | 13.83 | 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 | 82.43 | 84.29 | 79.48 | 71.67 | 58.32 | 36.23 | 19.94 | 61.77 | e | |||||||
2022 | 10.23 | 12.54 | 30.23 | 39.43 | 62.45 | 74.27 | 77.87 | 77.10 | 68.47 | 55.13 | 32.87 | 14.84 | 46.28 | |||||||||||||
2023 | 17.32 | 21.54 | 26.94 | 43.10 | 73.23 | 77.47 | 76.52 | 76.55 | 72.83 | 53.19 | 35.60 | 31.48 | 50.48 | |||||||||||||
2024 | 17.42 | 31.21 | 33.06 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 27.23 | i | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 14.45 | 21.27 | 34.07 | 51.61 | 67.05 | 75.60 | 79.93 | 78.40 | 68.24 | 54.72 | 34.59 | 19.94 | 49.90 | |||||||||||||
S.D. | 6.56 | 6.23 | 5.15 | 6.01 | 4.79 | 3.68 | 3.18 | 3.52 | 3.74 | 4.10 | 5.04 | 6.52 | 2.27 | |||||||||||||
SKEW | 0.02 | 0.36 | 0.28 | 0.05 | -0.02 | 0.07 | -0.34 | -0.15 | -0.51 | 0.08 | 0.30 | -0.18 | 0.10 | |||||||||||||
MAX | 28.94 | 34.10 | 46.94 | 63.28 | 78.29 | 84.67 | 86.81 | 84.90 | 76.27 | 68.84 | 46.50 | 31.48 | 54.21 | |||||||||||||
MIN | 0.55 | 10.00 | 23.16 | 39.43 | 56.42 | 68.24 | 71.42 | 70.03 | 55.83 | 43.06 | 24.66 | 3.67 | 46.04 | |||||||||||||
YRS | 59 | 58 | 58 | 54 | 53 | 51 | 52 | 52 | 52 | 53 | 57 | 56 | 44 |