YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1958 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 71.53 | o | 66.16 | 49.07 | 43.48 | 52.90 | i | |||
1959 | 36.97 | 39.61 | 47.32 | 60.87 | 69.87 | a | 84.31 | a | 87.55 | 83.65 | 71.10 | 58.35 | 48.57 | 39.65 | 60.65 | |||||||||||
1960 | 31.77 | 31.28 | 48.19 | 62.77 | 70.93 | a | 83.40 | 90.23 | 87.13 | 78.10 | 62.42 | 47.00 | 35.97 | 60.77 | ||||||||||||
1961 | 38.03 | 42.43 | 47.16 | 56.60 | 70.74 | 84.20 | 86.58 | 84.19 | 66.07 | b | 59.52 | 41.77 | 32.19 | 59.12 | ||||||||||||
1962 | 25.32 | 38.00 | 41.10 | 63.13 | 70.74 | 80.40 | 85.90 | 85.00 | 76.57 | 65.77 | 52.53 | 39.45 | 60.33 | |||||||||||||
1963 | 27.90 | 46.64 | 48.03 | 58.10 | 74.58 | 80.27 | 88.81 | 81.42 | 76.90 | 67.52 | 49.20 | 35.55 | 61.24 | |||||||||||||
1964 | 29.77 | 31.66 | 38.23 | 55.50 | 70.00 | 76.10 | 89.65 | 81.74 | 74.03 | 65.74 | 40.47 | 30.90 | a | 56.98 | ||||||||||||
1965 | 30.94 | 35.85 | a | 38.77 | a | 58.10 | 66.03 | 74.67 | 82.52 | 79.84 | 63.97 | 65.87 | 51.33 | 35.45 | 56.94 | |||||||||||
1966 | 31.94 | 34.86 | 49.94 | 60.23 | 74.29 | 79.97 | 88.19 | 83.06 | 75.87 | 60.10 | 50.27 | 26.55 | 59.60 | |||||||||||||
1967 | 33.16 | 37.89 | 52.06 | 58.43 | 66.45 | 73.70 | 85.90 | 84.23 | 73.06 | l | 65.45 | 49.93 | 27.16 | 57.67 | a | |||||||||||
1968 | 28.17 | a | 35.86 | 47.77 | 52.13 | 66.23 | 80.97 | 86.90 | 78.24 | b | ----- | z | 66.96 | f | 43.10 | 35.16 | 55.45 | b | ||||||||
1969 | 39.47 | a | 38.86 | 41.55 | 60.85 | c | 76.26 | 74.20 | 87.42 | 87.65 | 77.97 | 51.94 | 46.90 | a | 37.26 | 60.03 | ||||||||||
1970 | 34.94 | 44.86 | 43.58 | 52.33 | 71.65 | 78.23 | 86.94 | 89.13 | 73.33 | 56.00 | 47.27 | 38.77 | a | 59.75 | ||||||||||||
1971 | 36.74 | 37.46 | 47.03 | 60.33 | 67.48 | 81.97 | 87.77 | 87.65 | 72.57 | b | 59.74 | 43.17 | 32.19 | 59.51 | ||||||||||||
1972 | 37.32 | 44.28 | 58.28 | b | 60.60 | 71.13 | 80.77 | 86.24 | b | 83.97 | b | 73.70 | 59.68 | 40.47 | 28.72 | f | 63.31 | a | ||||||||
1973 | 24.50 | c | 31.19 | a | 43.39 | 52.83 | 70.19 | d | 78.21 | a | 88.54 | r | 85.92 | e | 74.30 | 65.75 | o | ----- | z | ----- | z | 57.57 | d | |||
1974 | 33.29 | n | 32.52 | a | 52.18 | c | 56.83 | 72.74 | 83.33 | 86.39 | 84.04 | c | 76.45 | a | ----- | z | ----- | z | ----- | z | 68.06 | d | ||||
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 | 72.00 | g | 67.77 | 49.73 | 42.32 | 53.28 | i | |||
1978 | 36.10 | 40.68 | 54.53 | a | 63.33 | 69.43 | c | 83.53 | 90.97 | a | 85.31 | b | 77.17 | a | 68.33 | a | 44.00 | b | 23.55 | 61.41 | ||||||
1979 | 22.03 | a | 34.27 | b | 45.10 | a | 58.43 | b | 67.61 | 81.53 | 85.76 | b | 82.77 | a | 80.79 | a | 65.42 | 37.52 | a | 35.42 | 58.05 | |||||
1980 | 32.33 | a | 36.97 | 46.00 | a | 60.72 | a | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 44.01 | h | |
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 | 46.61 | 55.17 | g | 62.39 | 74.70 | 84.52 | 88.03 | 78.60 | 62.84 | 44.03 | 27.50 | a | 63.25 | c | ||||||||
1984 | 19.07 | a | 28.24 | 40.81 | 52.78 | g | 71.45 | 75.67 | 86.23 | e | 83.94 | 73.09 | h | 50.08 | g | 47.03 | a | 31.84 | 53.81 | c | ||||||
1985 | 28.43 | a | 31.82 | 46.65 | 63.54 | d | 70.23 | i | 81.52 | a | 87.16 | 83.94 | n | 66.71 | b | 60.83 | b | 43.17 | 33.69 | b | 54.35 | b | ||||
1986 | 38.52 | 43.11 | 56.45 | 59.58 | f | 67.59 | d | 82.55 | a | 83.84 | 86.50 | c | 57.50 | v | 58.04 | f | 46.87 | 41.27 | a | 60.74 | c | |||||
1987 | 33.87 | 43.14 | 45.61 | 66.73 | d | 71.93 | b | 80.00 | y | 85.23 | 81.65 | 78.00 | b | 68.10 | 47.33 | 35.23 | 59.71 | a | ||||||||
1988 | 27.67 | a | 36.76 | 46.16 | 63.03 | 71.13 | 87.04 | f | 90.55 | 87.19 | ----- | z | 70.77 | 45.43 | 34.03 | 57.27 | b | |||||||||
1989 | 30.84 | 25.93 | 52.45 | 64.43 | b | 71.50 | a | 78.76 | a | 91.75 | g | 83.80 | k | 76.13 | 64.13 | a | 49.93 | 33.84 | 54.79 | b | ||||||
1990 | 37.55 | 35.86 | 49.39 | 64.23 | 68.26 | ----- | z | 84.00 | i | 86.34 | b | 80.93 | c | 63.46 | g | 47.30 | 27.97 | 55.31 | c | |||||||
1991 | 28.87 | 40.26 | a | 45.35 | 55.38 | d | 69.13 | 80.30 | 86.61 | 85.54 | e | 74.46 | d | 65.26 | 40.93 | 31.90 | 58.67 | |||||||||
1992 | 30.81 | 41.69 | 53.23 | a | 66.72 | a | 73.18 | c | 78.52 | a | 82.23 | a | 84.73 | e | 76.63 | 67.87 | 39.63 | 30.96 | f | 63.20 | a | |||||
1993 | 30.21 | c | 31.04 | 47.34 | b | 55.53 | 70.13 | 78.57 | 83.26 | 83.00 | a | 75.83 | 59.77 | 39.83 | 33.39 | 57.33 | ||||||||||
1994 | 37.03 | 37.61 | 54.16 | 60.97 | 74.35 | 85.20 | 89.29 | 87.60 | f | 76.63 | k | 60.10 | 40.07 | 35.76 | f | 59.86 | c | |||||||||
1995 | 33.74 | 46.18 | 51.74 | 55.75 | b | 61.16 | 74.27 | 85.26 | d | 87.66 | b | 78.21 | b | 61.03 | a | 51.86 | a | 43.59 | b | 60.87 | ||||||
1996 | 35.48 | 37.52 | 49.06 | 59.37 | c | 71.55 | 80.45 | j | 88.87 | a | 87.74 | d | 71.96 | c | 55.79 | g | 45.08 | e | 37.00 | a | 58.36 | b | ||||
1997 | 31.90 | a | 36.36 | 52.00 | 50.96 | d | 70.03 | a | 80.42 | f | 86.04 | f | 81.38 | g | 72.29 | f | 61.35 | e | 45.04 | c | 31.52 | 47.39 | d | |||
1998 | 40.71 | 40.54 | b | 46.62 | g | 55.96 | b | 70.72 | f | 75.33 | f | 88.33 | a | 84.64 | c | 80.58 | d | 62.06 | 49.50 | 33.94 | 59.59 | c | ||||
1999 | 38.87 | 42.82 | f | 55.74 | 54.80 | 64.74 | 75.14 | i | 86.31 | b | 82.83 | a | 72.56 | e | 66.31 | e | 57.07 | 36.81 | 61.60 | b | ||||||
2000 | 39.93 | b | 44.69 | 49.03 | 63.23 | 71.56 | f | 81.37 | c | 90.24 | f | 87.07 | b | 72.14 | h | 62.55 | 32.40 | 32.71 | 54.78 | c | ||||||
2001 | 30.35 | 36.18 | 49.19 | 59.47 | 70.14 | b | 82.63 | 89.00 | 86.68 | c | 79.50 | d | 63.68 | 51.07 | 30.68 | 60.71 | ||||||||||
2002 | 31.55 | 32.86 | 41.97 | 63.03 | 69.62 | j | 84.35 | j | 90.32 | 84.42 | 73.40 | 56.04 | h | 40.90 | 37.26 | 55.08 | c | |||||||||
2003 | 35.07 | a | 36.71 | 46.87 | 60.67 | f | 68.48 | b | 76.92 | e | 91.87 | 85.75 | c | 72.97 | 67.07 | b | 38.18 | b | 35.71 | 59.60 | a | |||||
2004 | 31.94 | 35.04 | e | 55.97 | 61.75 | j | 69.18 | c | 78.20 | 84.10 | 81.45 | 72.93 | 58.95 | i | 44.33 | 36.19 | 58.93 | b | ||||||||
2005 | 40.28 | b | 38.32 | 48.47 | a | 59.60 | 68.39 | 73.33 | 88.57 | a | 81.75 | c | 74.57 | 62.33 | d | 47.18 | b | 33.87 | 59.72 | |||||||
2006 | 37.68 | 37.69 | b | 45.97 | 61.52 | a | 72.28 | b | 83.63 | 87.55 | 82.79 | b | 68.90 | 55.95 | i | 49.20 | 32.29 | 59.95 | a | |||||||
2007 | 22.10 | 38.11 | 51.52 | 60.13 | 69.74 | 81.11 | c | 88.90 | 86.10 | b | 75.23 | 61.06 | 52.60 | 27.30 | a | 59.49 | ||||||||||
2008 | 24.94 | 32.76 | 40.74 | 52.53 | 63.35 | 79.06 | n | 87.03 | 84.45 | 72.77 | 64.70 | a | 49.79 | a | 32.89 | c | 55.09 | a | ||||||||
2009 | 30.30 | k | 40.07 | 48.93 | c | 55.10 | 69.26 | 73.27 | 85.24 | b | 82.97 | a | 77.37 | 55.16 | 47.87 | 26.32 | 60.14 | a | ||||||||
2010 | 29.19 | 32.29 | 46.03 | a | 55.73 | d | 61.94 | 77.70 | c | 85.89 | c | 82.68 | c | 78.97 | 64.35 | 43.60 | 35.19 | 57.80 | ||||||||
2011 | 26.16 | 29.79 | 44.87 | a | 53.63 | 61.61 | 77.86 | a | 83.58 | 87.23 | 76.50 | 61.90 | 44.97 | 33.03 | 56.76 | |||||||||||
2012 | 39.97 | 38.83 | 55.87 | 64.20 | 72.39 | 85.83 | 87.77 | a | 86.06 | 76.93 | 61.74 | 52.93 | 32.52 | 62.92 | ||||||||||||
2013 | 18.84 | 33.54 | 45.68 | 53.33 | 69.61 | 83.40 | 88.03 | 85.48 | 74.27 | 56.68 | 43.60 | 26.42 | 56.57 | |||||||||||||
2014 | 34.00 | 40.07 | 51.35 | 57.30 | 68.45 | 79.00 | 87.29 | 78.74 | 75.83 | 63.87 | 45.20 | 38.35 | 59.96 | |||||||||||||
2015 | 36.26 | 47.46 | 56.65 | 59.30 | 63.58 | 83.17 | 82.87 | 84.10 | 79.20 | 67.07 | a | 44.73 | 27.74 | 61.01 | ||||||||||||
2016 | 24.39 | 34.52 | 48.48 | 57.73 | 65.29 | 84.63 | 86.65 | 83.45 | 74.93 | 66.13 | 52.83 | 32.74 | 59.31 | |||||||||||||
2017 | 26.81 | 39.79 | 55.74 | 58.40 | 66.32 | 81.93 | 86.97 | 83.74 | 74.73 | 59.74 | 54.73 | 41.55 | 60.87 | |||||||||||||
2018 | 38.87 | 44.72 | j | 50.75 | s | 60.23 | 73.32 | 85.60 | e | 90.42 | 85.39 | 81.57 | 58.19 | 44.67 | 35.90 | 65.42 | b | |||||||||
2019 | 30.39 | 33.14 | 41.48 | 60.57 | 62.52 | 76.10 | 87.61 | 86.74 | 79.03 | 55.65 | 48.30 | 34.87 | 58.03 | |||||||||||||
2020 | 31.26 | 31.76 | 47.52 | 58.23 | 72.03 | 79.20 | 87.10 | 90.16 | 76.47 | 62.97 | 51.00 | 35.32 | 60.25 | |||||||||||||
2021 | 33.74 | 36.71 | 48.68 | 58.60 | 70.60 | a | 84.70 | 89.13 | 84.65 | 79.63 | 59.03 | 53.87 | 39.61 | 61.58 | ||||||||||||
2022 | 31.32 | 34.18 | 45.84 | 58.73 | 67.06 | 81.23 | 88.19 | 86.55 | 81.60 | 62.68 | 42.50 | 27.65 | 58.96 | |||||||||||||
2023 | 29.26 | 24.11 | 34.65 | 50.53 | 72.03 | 76.77 | 88.55 | 85.42 | 78.07 | 64.29 | 49.17 | a | 37.19 | 57.50 | ||||||||||||
2024 | 35.23 | 41.59 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 38.41 | j | ||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 32.08 | 36.92 | 48.01 | 58.74 | 69.14 | 79.95 | 87.11 | 84.70 | 75.59 | 62.69 | 46.41 | 34.07 | 59.46 | |||||||||||||
S.D. | 5.41 | 5.01 | 5.06 | 3.95 | 3.55 | 3.56 | 2.20 | 2.45 | 3.79 | 3.92 | 4.79 | 4.59 | 1.62 | |||||||||||||
SKEW | -0.45 | -0.08 | -0.13 | -0.12 | -0.55 | -0.26 | -0.23 | -0.38 | -0.92 | -0.41 | -0.30 | -0.07 | -0.17 | |||||||||||||
MAX | 40.71 | 47.46 | 58.28 | 66.73 | 76.26 | 85.83 | 91.87 | 90.16 | 81.60 | 70.77 | 57.07 | 43.59 | 62.92 | |||||||||||||
MIN | 18.84 | 24.11 | 34.65 | 50.53 | 61.16 | 73.27 | 82.23 | 78.24 | 63.97 | 51.94 | 32.40 | 23.55 | 56.57 | |||||||||||||
YRS | 58 | 58 | 58 | 55 | 55 | 50 | 54 | 55 | 51 | 51 | 59 | 56 | 32 |