YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1967 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1968 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1969 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1970 | ----- | z | 39.61 | 42.61 | 47.44 | c | 63.00 | c | 71.14 | a | 83.13 | a | 82.45 | 69.17 | a | 54.74 | ----- | z | 31.45 | 58.48 | b | |||||
1971 | 34.10 | 37.68 | 47.13 | 57.27 | 66.57 | c | 80.10 | a | 83.57 | a | 82.55 | 71.00 | 61.63 | a | 48.47 | 25.82 | c | 57.99 | ||||||||
1972 | 23.63 | a | 36.00 | ----- | z | 60.97 | 69.35 | 77.47 | 84.45 | 80.72 | b | 72.53 | 60.40 | a | 37.97 | ----- | z | 60.35 | b | |||||||
1973 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1974 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1975 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1976 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1977 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 34.03 | 34.03 | k | |
1978 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 48.55 | a | ----- | z | 48.55 | k |
1979 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 79.03 | ----- | z | ----- | z | ----- | z | 79.03 | k | |
1980 | ----- | z | 32.97 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 32.97 | k | |
1981 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1982 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1983 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1984 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1985 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1986 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1987 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1988 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1989 | ----- | z | 23.14 | 42.10 | 59.87 | 67.48 | 74.30 | 84.19 | 78.81 | 74.30 | 60.84 | 49.07 | 33.52 | 58.87 | a | |||||||||||
1990 | 30.97 | 37.86 | 49.13 | 57.47 | 64.10 | 80.70 | 81.19 | 79.10 | 74.90 | 58.74 | 43.83 | 27.87 | 57.15 | |||||||||||||
1991 | 25.45 | 35.82 | 40.10 | 50.93 | 63.45 | 73.89 | b | 79.61 | 79.25 | c | 72.67 | 64.26 | 41.90 | a | 31.80 | a | 54.93 | |||||||||
1992 | 30.32 | 39.52 | 48.87 | 64.17 | l | 68.30 | d | 75.40 | 78.45 | 79.87 | 73.20 | 65.32 | 36.37 | 26.57 | a | 56.56 | a | |||||||||
1993 | 26.42 | 30.75 | 37.77 | 52.07 | 65.06 | 75.54 | b | 80.81 | 77.20 | a | 71.60 | 59.00 | 37.20 | 27.41 | b | 53.40 | ||||||||||
1994 | 27.55 | 26.86 | 47.93 | b | 55.11 | b | 67.84 | 81.24 | a | 85.17 | b | 82.73 | a | 73.50 | d | 59.39 | 40.41 | a | 29.89 | c | 56.47 | |||||
1995 | 28.58 | 41.29 | 43.45 | 53.47 | 58.50 | a | 73.50 | 77.71 | 82.10 | 72.13 | 59.84 | 49.63 | 38.14 | b | 56.53 | |||||||||||
1996 | 29.00 | 28.86 | 42.48 | 54.50 | 71.45 | 77.47 | 84.68 | 83.19 | 70.35 | d | 59.13 | 43.57 | b | 27.23 | 55.99 | |||||||||||
1997 | 23.77 | 22.71 | 40.94 | 51.38 | a | 68.38 | b | 75.89 | b | 81.45 | 79.73 | a | 74.38 | a | 58.40 | f | 43.04 | b | 25.55 | 53.38 | a | |||||
1998 | 32.26 | 34.39 | 43.68 | 53.31 | a | 68.29 | 75.67 | 83.77 | 81.42 | 77.53 | 58.94 | 41.40 | 37.10 | 57.31 | ||||||||||||
1999 | 36.42 | 37.82 | 52.68 | 53.20 | 62.21 | b | 76.53 | 81.68 | 76.39 | 70.40 | 65.00 | c | 51.97 | 29.61 | 57.83 | |||||||||||
2000 | 32.32 | 33.62 | 46.03 | 61.67 | 70.30 | a | 79.17 | 85.19 | 82.87 | 75.30 | 62.42 | 35.83 | a | 31.45 | 58.01 | |||||||||||
2001 | 25.16 | 32.75 | 45.72 | b | 58.10 | 68.24 | b | 77.97 | 85.10 | a | 81.27 | a | 76.90 | 60.94 | 49.47 | 25.32 | 57.24 | |||||||||
2002 | 26.33 | a | ----- | z | 41.83 | a | 58.54 | b | 68.39 | ----- | z | 87.63 | a | 81.53 | a | 72.46 | b | 59.93 | c | 42.80 | j | 32.89 | c | 58.84 | c | |
2003 | 34.55 | k | 39.50 | d | 44.52 | b | 59.71 | f | 66.50 | e | 76.96 | d | 89.00 | n | 82.20 | a | 70.93 | c | 66.90 | 42.52 | a | 34.31 | b | 58.26 | c | |
2004 | 19.50 | a | 27.79 | a | 51.16 | 57.93 | a | 69.97 | 78.17 | 82.00 | i | 78.69 | e | 71.46 | b | 58.64 | c | 46.93 | c | 26.71 | 53.36 | a | ||||
2005 | 30.00 | 33.27 | b | 42.82 | c | 57.76 | i | 66.63 | l | 75.00 | a | 86.68 | 79.39 | 73.81 | d | 62.80 | f | 47.63 | 21.77 | 54.49 | c | |||||
2006 | 22.45 | 24.85 | a | 41.58 | 60.55 | a | 71.06 | 80.90 | 84.32 | 79.84 | 68.10 | 55.97 | a | 44.83 | 34.00 | b | 55.71 | |||||||||
2007 | 28.48 | 38.93 | 50.58 | 58.60 | 67.23 | 80.50 | 85.42 | 83.03 | 74.57 | 61.67 | a | 51.59 | a | 22.47 | a | 58.59 | ||||||||||
2008 | 13.35 | 24.40 | d | 33.65 | 50.23 | 65.00 | 77.00 | a | 83.42 | 81.81 | 73.59 | a | 62.87 | a | 47.53 | 28.50 | a | 53.45 | ||||||||
2009 | 25.80 | a | 33.37 | a | 46.14 | c | 54.80 | 69.80 | a | 72.33 | 83.03 | 81.03 | 74.80 | 55.52 | 48.27 | 24.58 | 55.79 | |||||||||
2010 | 28.21 | c | 28.83 | e | 41.27 | a | 58.07 | c | 64.97 | b | 78.80 | 86.00 | 79.32 | 76.93 | 61.90 | 42.17 | a | 38.27 | e | 57.06 | ||||||
2011 | 23.32 | c | 28.96 | d | 43.00 | b | 55.45 | a | 61.84 | 79.13 | 85.03 | a | 84.39 | 73.30 | 61.23 | a | 46.76 | e | 33.38 | g | 58.40 | a | ||||
2012 | 35.61 | c | 32.93 | 51.46 | g | 63.34 | a | 71.21 | b | ----- | z | 84.29 | 83.96 | c | 72.92 | d | 62.13 | 50.53 | 29.61 | 58.65 | b | |||||
2013 | 18.39 | 27.43 | 43.10 | a | 53.13 | 65.29 | 81.40 | 84.32 | 79.74 | 72.50 | 55.84 | 44.85 | d | 22.26 | 54.02 | |||||||||||
2014 | 29.19 | 31.43 | 42.61 | 54.40 | 63.71 | 76.67 | 83.42 | 77.42 | 74.07 | 61.55 | 43.41 | a | 31.10 | 55.75 | ||||||||||||
2015 | 23.74 | 37.71 | 49.00 | 57.00 | 61.16 | 78.30 | 77.65 | 79.61 | 74.35 | d | 63.33 | d | 43.55 | a | 27.26 | 56.06 | ||||||||||
2016 | 15.61 | 24.32 | d | 46.81 | 56.07 | ----- | z | 81.67 | 81.32 | 76.27 | a | 71.55 | a | 64.23 | ----- | z | 27.64 | c | 54.55 | b | ||||||
2017 | ----- | z | 34.50 | 45.68 | 55.77 | 65.35 | 80.60 | 83.45 | 79.39 | 74.00 | 63.30 | h | 51.23 | d | 41.23 | 61.12 | b | |||||||||
2018 | 34.90 | 38.21 | 47.74 | 57.86 | a | 69.97 | b | 82.13 | 87.19 | 83.03 | 75.90 | 58.23 | 39.63 | 25.10 | 58.33 | |||||||||||
2019 | 22.94 | 21.11 | 36.26 | 55.60 | 59.84 | 74.20 | 83.26 | 82.97 | 76.57 | 57.39 | 45.97 | a | 25.52 | 53.47 | ||||||||||||
2020 | 24.42 | 31.34 | 46.39 | 58.47 | 72.13 | 80.47 | 83.65 | 86.65 | 74.27 | 65.48 | 45.83 | 25.77 | 57.91 | |||||||||||||
2021 | 26.23 | 32.78 | a | 43.48 | 58.03 | 67.68 | 83.00 | 86.32 | 82.03 | 77.67 | 58.81 | 52.00 | b | 32.32 | 58.36 | |||||||||||
2022 | 28.16 | 29.18 | 44.00 | 58.03 | 68.23 | 79.10 | 83.23 | 83.32 | 77.37 | 59.97 | 41.77 | 29.55 | 56.82 | |||||||||||||
2023 | 22.68 | 20.75 | 33.77 | 49.27 | 68.77 | 74.17 | 86.58 | 82.87 | 74.37 | 63.58 | 47.73 | 35.71 | 55.02 | |||||||||||||
2024 | 29.45 | 34.14 | 46.30 | d | 55.61 | l | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 36.63 | i | ||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 26.71 | 31.98 | 44.12 | 55.94 | 66.68 | 77.68 | 83.51 | 81.00 | 73.70 | 60.74 | 45.09 | 29.71 | 56.37 | |||||||||||||
S.D. | 5.29 | 5.65 | 4.36 | 3.62 | 3.41 | 3.00 | 2.49 | 2.31 | 2.44 | 2.99 | 4.51 | 4.77 | 1.61 | |||||||||||||
SKEW | -0.38 | -0.33 | -0.47 | -0.29 | -0.54 | -0.20 | -0.74 | -0.10 | 0.01 | -0.02 | -0.33 | 0.46 | -0.51 | |||||||||||||
MAX | 36.42 | 41.29 | 52.68 | 63.34 | 72.13 | 83.00 | 87.63 | 86.65 | 79.03 | 66.90 | 52.00 | 41.23 | 58.59 | |||||||||||||
MIN | 13.35 | 20.75 | 33.65 | 47.44 | 58.50 | 71.14 | 77.65 | 76.27 | 68.10 | 54.74 | 35.83 | 21.77 | 53.40 | |||||||||||||
YRS | 35 | 39 | 37 | 35 | 36 | 36 | 36 | 38 | 39 | 35 | 36 | 37 | 25 |