YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1961 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 57.18 | p | 57.68 | 57.87 | 46.55 | a | 38.32 | 15.23 | 10.18 | 37.64 | f | |||||
1962 | 4.35 | 19.80 | 19.10 | 38.88 | 43.90 | 50.40 | 56.32 | 54.66 | 48.65 | 40.44 | 27.70 | 14.89 | h | 36.75 | a | |||||||||||
1963 | 8.90 | 20.04 | 21.71 | 35.50 | 44.76 | 50.88 | 58.32 | 56.65 | 53.05 | 43.92 | 29.23 | 16.85 | 36.65 | |||||||||||||
1964 | 12.66 | 14.00 | 19.57 | a | 33.42 | 43.77 | 50.75 | 59.19 | 54.27 | 48.38 | a | 38.42 | 22.52 | b | 11.68 | 34.05 | ||||||||||
1965 | 15.45 | 13.07 | 10.71 | 32.32 | 41.71 | 49.60 | 57.45 | 54.44 | 46.93 | 40.81 | 29.92 | 21.53 | 34.49 | |||||||||||||
1966 | 14.82 | 11.86 | 27.89 | 34.35 | 45.18 | 51.97 | 60.63 | 55.81 | 48.77 | 37.92 | a | 31.48 | 14.90 | a | 36.30 | |||||||||||
1967 | 20.32 | a | 21.02 | 32.00 | 35.63 | 40.85 | 49.45 | 57.58 | 53.68 | 49.58 | 42.27 | 28.05 | 15.34 | 37.15 | ||||||||||||
1968 | 13.02 | 16.53 | 19.56 | 31.33 | 41.15 | 52.95 | 57.06 | 54.50 | ----- | z | ----- | z | 23.35 | 18.37 | 32.78 | b | ||||||||||
1969 | 23.97 | 20.18 | 21.02 | 37.55 | a | 46.19 | 49.42 | 59.18 | 58.71 | 49.78 | 27.31 | 16.30 | 10.12 | b | 34.98 | |||||||||||
1970 | 13.61 | 19.27 | 19.00 | 23.62 | a | 44.55 | 51.78 | 58.85 | a | 58.19 | 47.08 | 34.60 | 28.86 | a | 21.66 | 35.09 | ||||||||||
1971 | 20.83 | a | 18.32 | 25.79 | 34.30 | 41.56 | 51.55 | 56.66 | 55.92 | 46.58 | 37.98 | 19.40 | 9.97 | 34.91 | ||||||||||||
1972 | 16.83 | a | 21.19 | 30.29 | 36.50 | 43.24 | 53.65 | 57.73 | 56.15 | 50.33 | 39.95 | 12.10 | a | 11.03 | 35.75 | |||||||||||
1973 | 7.58 | a | 7.88 | 19.02 | 27.23 | 43.23 | 51.88 | 55.45 | a | 55.63 | 47.78 | a | 38.53 | a | 30.13 | 21.27 | a | 33.80 | ||||||||
1974 | 12.79 | 14.82 | 32.58 | ----- | z | 46.76 | 52.32 | 57.79 | 53.81 | 47.38 | 40.03 | a | 25.27 | 9.56 | 35.74 | a | ||||||||||
1975 | 14.58 | a | 13.48 | a | 25.03 | 31.38 | 41.21 | 48.64 | a | 57.66 | 54.26 | 46.73 | 38.61 | 22.17 | 19.16 | 34.41 | ||||||||||
1976 | 16.02 | a | 24.62 | 22.39 | 33.69 | a | 42.55 | 50.33 | 57.13 | a | 53.60 | 49.60 | 35.55 | a | 28.28 | a | 20.26 | 36.17 | ||||||||
1977 | 18.95 | 20.98 | 23.92 | 36.19 | a | 42.95 | b | 55.13 | 57.70 | a | 57.25 | a | 49.23 | 37.84 | 29.93 | a | 22.23 | 37.69 | ||||||||
1978 | 18.76 | 19.62 | 30.27 | ----- | z | 40.53 | 54.40 | 58.21 | 54.44 | 49.38 | 39.23 | e | 25.65 | 8.60 | 36.28 | a | ||||||||||
1979 | 6.22 | a | 14.79 | 23.90 | 33.16 | a | 41.76 | 49.55 | a | 56.55 | 54.19 | 48.71 | a | 39.18 | 14.48 | 11.18 | a | 32.81 | ||||||||
1980 | 12.50 | a | 17.93 | a | 20.60 | b | 27.97 | 40.89 | i | 54.03 | a | 59.61 | 55.60 | 49.92 | 35.50 | 21.42 | 25.57 | a | 34.60 | a | ||||||
1981 | 17.02 | 20.07 | a | 21.06 | 38.70 | 42.23 | 51.43 | 58.95 | 55.89 | 50.83 | 38.53 | 31.20 | 19.13 | a | 37.09 | |||||||||||
1982 | 16.59 | b | 17.91 | 29.20 | a | 32.84 | a | 41.58 | 50.52 | 56.84 | 57.50 | a | 48.23 | 35.05 | 24.67 | 17.10 | 35.67 | |||||||||
1983 | 15.16 | b | 19.46 | 24.47 | 28.26 | a | 39.13 | 50.05 | a | 58.55 | 58.00 | 49.63 | 37.26 | 23.60 | 12.86 | b | 34.70 | |||||||||
1984 | 2.38 | c | 9.77 | a | 20.64 | b | 28.52 | b | 44.97 | 50.83 | 57.98 | a | 55.73 | a | 49.40 | 29.93 | a | 28.17 | 19.10 | 33.12 | ||||||
1985 | 12.15 | a | 14.00 | 26.71 | b | 35.94 | d | 44.45 | b | 53.37 | 57.13 | 55.72 | a | 44.94 | d | 36.87 | e | 26.92 | e | 17.71 | b | 35.49 | ||||
1986 | 23.71 | 23.12 | 30.64 | b | 36.57 | 42.33 | a | 53.72 | 56.06 | 56.57 | a | 46.73 | b | 35.60 | b | 19.77 | b | 1.69 | 35.54 | |||||||
1987 | 4.30 | c | 9.64 | 11.22 | b | 28.59 | c | 44.39 | 53.77 | 57.89 | 55.65 | a | 46.93 | b | 39.11 | d | 24.16 | a | 13.02 | b | 32.39 | |||||
1988 | 9.54 | d | 21.34 | d | 23.85 | 35.64 | a | 42.95 | b | 55.47 | a | 57.53 | 58.27 | ----- | z | 41.08 | 26.58 | 8.63 | 34.63 | a | ||||||
1989 | 6.00 | c | 11.48 | 30.23 | 36.28 | a | 45.85 | 51.18 | 59.50 | 55.26 | 49.55 | a | 37.05 | b | 30.25 | 16.90 | 35.79 | |||||||||
1990 | 15.00 | b | 21.68 | 28.82 | 37.08 | 41.47 | 55.28 | 58.37 | 54.77 | 52.37 | 38.42 | 25.08 | 13.92 | a | 36.86 | |||||||||||
1991 | 14.76 | 22.98 | 27.16 | 32.91 | a | 44.37 | 53.12 | 57.37 | a | 56.29 | 49.03 | 39.37 | 23.87 | 8.24 | 35.79 | |||||||||||
1992 | 6.55 | a | 16.69 | 26.58 | a | 38.79 | a | 47.12 | a | 50.73 | 55.63 | 54.31 | 48.43 | a | 40.77 | a | 18.85 | 14.81 | b | 34.94 | ||||||
1993 | 16.65 | a | 12.29 | 25.88 | b | 34.10 | 44.84 | 51.30 | 56.94 | 56.02 | a | 47.00 | a | 36.21 | 19.63 | d | 17.12 | b | 34.83 | |||||||
1994 | 18.72 | b | 15.05 | 29.32 | 34.50 | 46.10 | a | 56.72 | 57.42 | 58.48 | 49.75 | 38.97 | 26.76 | a | 21.98 | a | 37.81 | |||||||||
1995 | 19.00 | d | 25.59 | e | 31.11 | d | 31.65 | g | 41.73 | a | 49.84 | a | 56.05 | 59.37 | 50.13 | d | 36.54 | e | 31.65 | d | 20.02 | a | 38.28 | a | ||
1996 | 18.57 | b | 25.19 | c | 28.00 | c | 35.52 | d | 46.70 | a | 53.38 | b | 60.40 | a | 56.48 | 47.75 | 37.08 | 29.83 | c | 19.56 | 38.21 | |||||
1997 | 16.35 | 13.72 | a | 30.18 | a | 30.24 | a | 44.19 | 53.33 | 58.58 | 56.26 | b | 52.58 | 35.28 | a | 20.41 | b | 8.08 | 34.94 | |||||||
1998 | 15.32 | 11.65 | a | 22.88 | b | 31.87 | 44.16 | b | 51.53 | a | 59.94 | 57.38 | c | 52.67 | 38.37 | a | 31.38 | 17.53 | 36.22 | |||||||
1999 | 21.58 | 24.62 | 32.52 | 30.37 | 42.23 | a | 51.31 | a | 60.31 | 56.98 | 48.05 | a | 37.82 | 31.45 | b | 15.32 | a | 37.71 | ||||||||
2000 | 19.19 | 22.50 | b | 27.68 | 36.82 | b | 47.39 | c | 53.98 | a | 59.89 | 59.35 | 50.50 | a | 38.90 | b | 19.78 | a | 18.30 | d | 37.86 | |||||
2001 | 12.53 | 18.44 | b | 27.26 | b | 37.33 | c | 45.06 | 54.34 | a | 60.63 | 57.02 | 49.84 | a | 38.76 | 28.88 | 18.85 | a | 37.41 | |||||||
2002 | 17.20 | a | 15.25 | 23.40 | 38.90 | a | 43.80 | a | 57.23 | 61.42 | 57.50 | a | 49.55 | a | 35.16 | 26.70 | 17.67 | b | 36.98 | |||||||
2003 | 23.98 | c | 16.96 | b | 25.15 | a | 35.57 | 44.57 | a | 51.72 | 60.74 | b | 58.35 | a | 47.32 | 41.92 | 26.26 | a | 20.20 | a | 37.73 | |||||
2004 | 13.87 | a | 5.66 | 32.21 | 35.13 | 43.37 | 51.41 | b | 56.05 | a | 53.92 | 46.60 | 38.30 | a | 24.62 | a | 16.02 | 34.76 | ||||||||
2005 | 22.29 | 17.25 | 28.23 | a | 35.40 | 45.50 | 51.45 | 59.68 | 56.02 | a | 49.55 | 39.10 | a | 29.13 | 16.71 | 37.53 | ||||||||||
2006 | 16.73 | a | 19.62 | 25.53 | 37.07 | 46.47 | 54.52 | 59.90 | 56.37 | a | 45.25 | 36.74 | 28.03 | 16.69 | 36.91 | |||||||||||
2007 | 2.66 | 20.41 | 30.71 | 35.58 | 43.34 | 52.21 | a | 59.02 | 58.78 | a | 49.98 | 37.79 | 27.63 | 10.24 | 35.70 | |||||||||||
2008 | 5.77 | 12.50 | 16.81 | 31.75 | 41.20 | a | 50.97 | 57.95 | 55.87 | 47.82 | 37.90 | 29.20 | 15.55 | 33.61 | ||||||||||||
2009 | 20.06 | 22.91 | 27.55 | 33.13 | 46.21 | 50.48 | 57.00 | 54.29 | 47.47 | 33.08 | 28.30 | 7.24 | 35.64 | |||||||||||||
2010 | 8.34 | 4.95 | 12.52 | 34.20 | 41.65 | 53.48 | 59.61 | 56.97 | 49.98 | 39.60 | 25.95 | 24.24 | 34.29 | |||||||||||||
2011 | 15.31 | 11.59 | 28.31 | 34.92 | 40.29 | 52.35 | 61.19 | 59.19 | 49.57 | 37.05 | 24.45 | 5.34 | 34.96 | |||||||||||||
2012 | 17.11 | 15.45 | 31.69 | 39.20 | b | 45.26 | 56.73 | 60.34 | 57.00 | 49.12 | 39.06 | 29.40 | 14.11 | 37.87 | ||||||||||||
2013 | 5.92 | 14.02 | 23.60 | 31.42 | 41.81 | 54.30 | 59.21 | 57.61 | 52.97 | 35.74 | 24.33 | 9.55 | 34.21 | |||||||||||||
2014 | 17.60 | 14.52 | 24.76 | 32.33 | 42.61 | 52.08 | 59.18 | 54.42 | a | 51.45 | 40.89 | 27.33 | 16.03 | 36.10 | ||||||||||||
2015 | 19.39 | 22.45 | 30.75 | a | 34.93 | 41.87 | 55.87 | c | 56.50 | 57.12 | a | 50.29 | a | 41.98 | c | 23.50 | a | 8.46 | q | 39.51 | a | |||||
2016 | 7.82 | 20.43 | 30.69 | 35.05 | b | 42.76 | 56.83 | 59.24 | 55.00 | 49.65 | 42.11 | 30.47 | 18.40 | 37.37 | ||||||||||||
2017 | 9.50 | 26.11 | 34.32 | a | 35.05 | 42.87 | a | 56.15 | 59.57 | a | 55.17 | b | 51.52 | 38.16 | 34.23 | 23.33 | b | 38.83 | ||||||||
2018 | 21.79 | 23.57 | 29.05 | 37.13 | 47.47 | 55.98 | 60.55 | a | 56.84 | 51.19 | a | 37.88 | b | 20.02 | a | 15.03 | 38.04 | |||||||||
2019 | 8.12 | a | 12.19 | b | 21.06 | 36.37 | 39.40 | a | 51.78 | 59.35 | 58.60 | 52.68 | 32.32 | 24.92 | 6.30 | a | 33.59 | |||||||||
2020 | 10.53 | 9.88 | 28.18 | 34.13 | 45.89 | 54.23 | 58.34 | 58.48 | 48.52 | 38.11 | 26.67 | 7.17 | b | 35.01 | ||||||||||||
2021 | 8.82 | 14.54 | 22.89 | 33.68 | 43.90 | 55.45 | 60.18 | 56.29 | 51.87 | 38.15 | 32.05 | 23.87 | 36.81 | |||||||||||||
2022 | 12.17 | a | 6.07 | 18.69 | 34.10 | a | 43.18 | 54.07 | 59.92 | 58.11 | 52.13 | 37.95 | 23.22 | 19.84 | 34.95 | |||||||||||
2023 | 13.35 | 15.46 | 21.44 | 31.00 | 45.15 | 50.63 | 60.87 | 59.03 | 50.37 | 39.27 | 26.12 | 19.08 | 35.98 | |||||||||||||
2024 | 17.95 | 17.84 | a | 22.83 | b | 36.28 | l | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 19.54 | i | |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 14.12 | 16.92 | 25.24 | 34.07 | 43.57 | 52.64 | 58.48 | 56.38 | 49.24 | 37.93 | 25.66 | 15.44 | 35.81 | |||||||||||||
S.D. | 5.55 | 5.15 | 5.28 | 3.20 | 2.04 | 2.17 | 1.53 | 1.62 | 1.93 | 2.78 | 4.66 | 5.32 | 1.52 | |||||||||||||
SKEW | -0.29 | -0.30 | -0.69 | -0.85 | 0.01 | 0.34 | -0.04 | 0.09 | 0.07 | -1.16 | -0.78 | -0.37 | -0.10 | |||||||||||||
MAX | 23.98 | 26.11 | 34.32 | 39.20 | 47.47 | 57.23 | 61.42 | 59.37 | 53.05 | 43.92 | 34.23 | 25.57 | 38.83 | |||||||||||||
MIN | 2.38 | 4.95 | 10.71 | 23.62 | 39.13 | 48.64 | 55.45 | 53.60 | 44.94 | 27.31 | 12.10 | 1.69 | 32.39 | |||||||||||||
YRS | 63 | 63 | 63 | 59 | 61 | 62 | 63 | 63 | 61 | 62 | 63 | 61 | 54 |