YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1961 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 51.33 | a | 31.52 | 14.63 | 32.49 | i | ||
1962 | 12.82 | 16.16 | 23.23 | 45.07 | 61.18 | 65.33 | 69.69 | 70.15 | 59.36 | a | 52.06 | 38.38 | b | 22.34 | 44.65 | |||||||||||
1963 | 6.27 | 19.50 | 37.98 | 48.75 | 57.71 | 70.68 | 73.26 | 70.68 | 64.60 | 58.68 | 37.50 | 11.03 | b | 46.39 | ||||||||||||
1964 | 22.44 | 25.17 | 25.27 | 47.73 | 61.24 | 68.33 | 75.61 | 67.27 | 60.53 | 51.83 | g | 31.83 | 13.77 | 45.38 | a | |||||||||||
1965 | 10.21 | 14.84 | 19.89 | 45.80 | 59.95 | 67.20 | 71.82 | 70.23 | 52.10 | 52.45 | 33.57 | 27.39 | 43.79 | |||||||||||||
1966 | 6.89 | 16.30 | 37.84 | b | 40.82 | 55.84 | 68.35 | 77.79 | 67.85 | 60.17 | 50.02 | 30.57 | 19.97 | 44.37 | ||||||||||||
1967 | 17.82 | 15.83 | b | 36.43 | a | 46.33 | 54.39 | 65.48 | 70.15 | 69.73 | 60.12 | 47.85 | 32.77 | 21.31 | 44.85 | |||||||||||
1968 | 15.35 | 17.74 | 41.15 | 47.62 | 52.97 | 68.52 | 70.69 | 71.94 | 61.22 | 50.13 | 34.38 | 15.77 | 45.62 | |||||||||||||
1969 | 6.85 | 18.86 | 18.84 | 47.42 | 59.87 | 61.62 | 72.52 | 72.90 | 62.98 | 43.76 | 34.32 | 20.87 | 43.40 | |||||||||||||
1970 | 5.32 | 21.16 | 25.97 | 44.05 | 60.63 | 69.28 | 73.94 | 73.03 | 62.92 | 47.89 | 31.45 | 16.42 | 44.34 | |||||||||||||
1971 | 8.23 | 17.62 | 29.87 | a | 48.80 | 56.68 | 71.21 | a | 68.84 | 72.55 | 61.65 | 52.37 | 32.80 | 16.40 | 44.75 | |||||||||||
1972 | 7.76 | 11.83 | 30.65 | 43.87 | 59.19 | 67.62 | 69.81 | 70.37 | 60.30 | 45.84 | 30.73 | 14.32 | 42.69 | |||||||||||||
1973 | 17.03 | 21.68 | 38.63 | 45.78 | 57.53 | 68.45 | 73.15 | 75.15 | a | 59.70 | 54.50 | 32.97 | 16.50 | 46.76 | ||||||||||||
1974 | 13.26 | 22.61 | 33.60 | 49.14 | a | 55.66 | 66.70 | 76.13 | 66.84 | 59.00 | 52.73 | 34.07 | 22.79 | 46.04 | ||||||||||||
1975 | 16.34 | 14.18 | 24.19 | 39.55 | 60.26 | 66.70 | 75.31 | 71.24 | 58.07 | 52.44 | 34.28 | 19.58 | 44.34 | |||||||||||||
1976 | 13.95 | a | 29.12 | 33.23 | 51.53 | 57.95 | 70.52 | 76.03 | 75.11 | 63.55 | 44.08 | 27.85 | 17.44 | 46.70 | ||||||||||||
1977 | 2.95 | a | 26.04 | 34.73 | 53.43 | 66.19 | 69.83 | a | 75.68 | 67.18 | 61.83 | 48.50 | 29.83 | 14.81 | 45.92 | |||||||||||
1978 | 1.35 | 7.73 | 30.32 | 44.93 | 58.98 | a | 67.47 | 71.63 | 71.44 | 67.83 | 49.94 | 31.13 | 13.80 | a | 43.05 | |||||||||||
1979 | -0.16 | 5.80 | a | 26.42 | 41.90 | 52.71 | 65.96 | c | 69.90 | 67.02 | 62.52 | 44.55 | b | 28.30 | 24.88 | a | 40.82 | |||||||||
1980 | 14.82 | a | 15.09 | 24.82 | 48.73 | 58.07 | b | 67.37 | 71.97 | a | 68.66 | 60.25 | 44.58 | 36.12 | 18.56 | 44.09 | ||||||||||
1981 | 19.69 | 22.75 | 36.94 | 51.15 | 54.82 | 66.50 | 71.30 | a | 69.23 | 61.60 | 45.66 | 37.00 | 15.68 | 46.03 | ||||||||||||
1982 | -0.47 | 16.07 | 28.74 | 40.09 | c | 57.85 | 60.90 | 71.58 | 68.65 | a | 58.73 | 46.03 | 27.55 | 23.22 | a | 41.58 | ||||||||||
1983 | 17.50 | a | 23.26 | a | 30.08 | 38.50 | a | 51.91 | d | 64.55 | b | 74.23 | 75.27 | 59.93 | a | 47.40 | 31.82 | -1.05 | 42.78 | |||||||
1984 | 13.60 | a | 25.07 | 22.29 | 43.76 | a | 53.55 | b | 66.27 | b | 71.06 | 71.74 | 54.98 | c | 46.93 | b | 32.53 | a | 15.87 | a | 43.14 | |||||
1985 | 7.66 | 13.91 | 34.98 | a | 49.28 | 60.59 | c | 61.68 | 70.03 | 63.52 | c | 57.03 | 45.39 | 18.85 | 6.81 | 40.81 | ||||||||||
1986 | 16.50 | a | 12.77 | 32.36 | b | 45.31 | a | 56.89 | c | 68.44 | c | 71.62 | b | 64.90 | a | 58.42 | 48.08 | 26.50 | 24.61 | 43.87 | ||||||
1987 | 21.48 | a | 31.06 | a | 33.82 | 50.63 | c | 62.74 | b | 70.60 | 73.60 | 66.23 | a | 60.35 | 41.25 | a | 35.95 | 23.32 | 47.59 | |||||||
1988 | 6.79 | 10.67 | 32.50 | 44.07 | a | 62.66 | 73.48 | a | 73.82 | 71.97 | a | 62.05 | a | 44.93 | b | 33.19 | c | 21.25 | e | 44.78 | ||||||
1989 | 23.17 | b | 9.05 | g | 28.36 | c | 46.79 | d | 57.62 | f | 66.80 | b | 74.66 | 70.89 | 60.79 | b | 49.87 | 29.66 | a | 10.16 | c | 46.11 | b | |||
1990 | 26.39 | 21.48 | b | 34.88 | a | 50.52 | j | 55.37 | a | 67.85 | 70.02 | a | 70.78 | b | 66.41 | b | 47.93 | b | 35.54 | e | 13.52 | d | 46.38 | a | ||
1991 | 11.65 | e | ----- | z | 35.00 | 48.88 | a | 59.03 | b | 71.93 | a | 72.05 | 71.21 | c | 59.78 | c | 45.46 | c | 23.88 | 25.17 | d | 47.64 | a | |||
1992 | 24.24 | 27.35 | c | 38.24 | d | 40.52 | c | 60.33 | a | 64.84 | a | 63.97 | 64.76 | 58.52 | b | 46.59 | d | 29.23 | h | 15.65 | g | 48.94 | b | |||
1993 | 9.77 | e | 11.48 | b | 26.72 | d | 42.84 | b | 57.04 | e | 63.67 | g | 69.06 | f | 69.77 | e | 55.53 | 45.97 | a | 28.17 | a | 19.17 | e | 36.65 | b | |
1994 | 4.35 | d | 9.78 | c | 34.60 | e | 44.90 | e | 62.05 | a | 68.93 | b | 69.12 | f | 67.79 | b | 64.06 | c | 50.95 | a | 35.27 | h | 20.82 | f | 45.27 | c |
1995 | 14.70 | h | 20.94 | a | 31.36 | b | 39.89 | b | 53.70 | c | 68.33 | g | 71.57 | d | 73.16 | f | 58.28 | e | 46.17 | e | 26.70 | b | 22.28 | f | 43.58 | d |
1996 | ----- | z | ----- | z | 27.56 | v | 40.21 | b | 52.61 | 67.55 | 68.34 | 68.47 | 58.14 | a | 47.93 | c | 22.73 | b | 10.89 | c | 48.54 | c | ||||
1997 | 4.83 | b | 16.31 | a | 27.37 | a | 39.84 | a | 51.83 | b | 69.29 | a | 72.38 | a | 68.76 | 62.16 | a | 48.57 | a | 27.23 | 25.45 | a | 42.84 | |||
1998 | 16.40 | 30.96 | 26.50 | c | 46.17 | 61.45 | a | 63.18 | 71.56 | 70.48 | a | 64.88 | 49.10 | 34.72 | 24.92 | a | 46.69 | |||||||||
1999 | 10.98 | c | 28.56 | a | 32.65 | 45.41 | b | 58.08 | 66.20 | 73.95 | 70.45 | 59.23 | 46.67 | a | 41.25 | 24.97 | a | 46.53 | ||||||||
2000 | 17.92 | 28.78 | 39.37 | 44.84 | a | 58.90 | 65.10 | 71.84 | 71.40 | 60.03 | 49.93 | a | 24.82 | 6.67 | a | 44.97 | ||||||||||
2001 | 16.43 | a | 9.68 | 24.47 | 45.73 | b | 58.89 | 67.28 | 74.47 | 71.90 | 60.07 | 45.92 | 43.12 | 22.32 | a | 45.02 | ||||||||||
2002 | 20.48 | a | 28.84 | 20.60 | a | 44.45 | a | 51.95 | 70.90 | 76.44 | 69.40 | 62.05 | a | 40.18 | a | 31.67 | 24.82 | 45.15 | ||||||||
2003 | 15.70 | c | 15.10 | b | 30.18 | 46.22 | 54.47 | 64.73 | 72.18 | 72.06 | 58.62 | 50.02 | 29.74 | a | 24.18 | 44.43 | ||||||||||
2004 | 13.29 | 17.60 | 35.50 | c | 47.47 | 55.28 | a | 62.60 | 68.77 | 64.37 | a | 63.71 | a | 47.50 | 36.10 | 23.61 | 44.65 | |||||||||
2005 | 12.89 | 26.65 | a | 30.81 | 48.98 | 55.22 | a | 69.65 | 73.66 | 69.06 | 65.67 | 48.03 | a | 35.57 | 16.08 | a | 46.02 | |||||||||
2006 | 28.42 | 20.98 | 32.23 | 50.20 | 58.24 | 67.67 | 75.23 | a | 70.32 | 55.67 | 44.60 | a | 32.98 | 26.62 | a | 46.93 | ||||||||||
2007 | 17.72 | a | 12.07 | a | 36.11 | 42.55 | 61.74 | 69.03 | 73.27 | 69.60 | 62.40 | 51.24 | 33.08 | 14.21 | 45.25 | |||||||||||
2008 | 10.45 | a | 12.64 | a | 26.24 | f | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 11.55 | j |
2009 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2010 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 71.70 | k | 59.55 | 51.27 | 33.45 | 14.33 | a | 39.65 | h | |||
2011 | 7.66 | 13.16 | 25.94 | 42.07 | 54.60 | 65.52 | 76.13 | 69.47 | 58.15 | 51.21 | 34.68 | 25.44 | 43.67 | |||||||||||||
2012 | 21.56 | 24.50 | 46.10 | 49.87 | 61.32 | 70.48 | 79.06 | 70.31 | 61.38 | 45.00 | 34.23 | 20.37 | 48.68 | |||||||||||||
2013 | 17.19 | 18.41 | 24.82 | 35.95 | 56.00 | 65.60 | 71.18 | 70.95 | 66.83 | 46.53 | 30.10 | 10.97 | 42.88 | |||||||||||||
2014 | 10.18 | a | 9.66 | 26.58 | 43.87 | 56.31 | 66.25 | 68.29 | 69.32 | 61.22 | 49.15 | 24.35 | 22.77 | 42.33 | ||||||||||||
2015 | 18.52 | 12.91 | 35.29 | 48.73 | 56.82 | 67.70 | 71.31 | 68.15 | 66.47 | 51.08 | 37.98 | 24.79 | 46.65 | |||||||||||||
2016 | 15.81 | 26.09 | 38.29 | 47.20 | 57.92 | 71.27 | 71.34 | 70.85 | 62.98 | 50.26 | 40.70 | 16.81 | 47.46 | |||||||||||||
2017 | 17.77 | 30.16 | 31.79 | 46.67 | 55.39 | 68.22 | 74.34 | 66.10 | 64.00 | 48.08 | 32.48 | 19.74 | 46.23 | |||||||||||||
2018 | 12.79 | 11.82 | 30.23 | 34.22 | 63.42 | 71.20 | 71.65 | 69.90 | 63.40 | 43.29 | 27.27 | 23.44 | 43.55 | |||||||||||||
2019 | 11.94 | 5.36 | 25.21 | 43.72 | 52.85 | 67.82 | 72.76 | 68.06 | 64.40 | 41.97 | 29.40 | 20.58 | 42.01 | |||||||||||||
2020 | 15.69 | 19.19 | 35.18 | 42.48 | 55.21 | 72.05 | 73.68 | 72.26 | 61.00 | 41.18 | 37.18 | 24.60 | 45.81 | |||||||||||||
2021 | 22.63 | 9.64 | 37.97 | 44.03 | 56.89 | 72.80 | 73.45 | 72.42 | 64.58 | 52.73 | 36.02 | 23.81 | 47.25 | |||||||||||||
2022 | 13.29 | 15.73 | 31.23 | 39.92 | 56.20 | f | 70.02 | 74.32 | 71.11 | 64.65 | 49.13 | 31.58 | 13.84 | 43.17 | a | |||||||||||
2023 | 15.13 | 16.48 | 22.74 | 43.23 | 62.47 | 72.17 | 70.23 | 72.32 | 66.60 | 49.42 | 36.63 | 30.94 | 46.53 | |||||||||||||
2024 | 14.42 | 32.28 | 35.37 | d | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 27.36 | i | ||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 13.59 | 18.58 | 31.13 | 45.03 | 57.60 | 67.78 | 72.51 | 69.89 | 61.22 | 48.04 | 32.22 | 18.92 | 44.79 | |||||||||||||
S.D. | 6.45 | 7.00 | 5.80 | 3.93 | 3.35 | 2.85 | 2.63 | 2.55 | 3.14 | 3.49 | 4.62 | 6.04 | 1.82 | |||||||||||||
SKEW | -0.10 | 0.21 | -0.04 | -0.38 | 0.18 | -0.30 | -0.23 | -0.31 | -0.20 | 0.15 | -0.32 | -0.73 | -0.23 | |||||||||||||
MAX | 28.42 | 32.28 | 46.10 | 53.43 | 66.19 | 73.48 | 79.06 | 75.27 | 67.83 | 58.68 | 43.12 | 30.94 | 48.68 | |||||||||||||
MIN | -0.47 | 5.36 | 18.84 | 34.22 | 51.83 | 60.90 | 63.97 | 63.52 | 52.10 | 40.18 | 18.85 | -1.05 | 40.81 | |||||||||||||
YRS | 59 | 58 | 59 | 58 | 57 | 57 | 57 | 58 | 60 | 60 | 59 | 58 | 49 |