YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1956 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 41.33 | o | 34.48 | d | 34.48 | k |
1957 | 29.33 | a | 42.08 | b | 51.29 | 57.46 | b | 68.68 | 79.33 | 88.97 | a | 87.70 | a | 78.24 | a | 61.24 | b | 41.28 | a | 40.03 | 60.47 | |||||
1958 | 31.50 | a | 44.00 | 46.19 | 56.62 | d | 78.73 | e | 82.03 | 88.03 | a | 91.35 | 79.93 | a | 69.26 | 45.28 | a | 43.55 | 63.04 | |||||||
1959 | 40.10 | a | 39.52 | a | 50.77 | 61.77 | 66.37 | a | 83.90 | 91.32 | 86.48 | 72.79 | a | 63.16 | 51.74 | c | 39.30 | a | 62.27 | |||||||
1960 | 28.75 | c | 30.50 | k | 50.30 | a | 61.57 | 72.03 | b | 84.37 | 95.00 | b | 88.03 | 82.80 | 65.39 | 48.40 | 31.90 | 64.41 | a | |||||||
1961 | 38.13 | 43.18 | 51.84 | 60.29 | b | 72.07 | a | 86.45 | a | 92.19 | 90.90 | a | 71.03 | 62.03 | a | 43.52 | a | 35.23 | 62.24 | |||||||
1962 | 27.97 | 37.25 | 45.32 | 66.69 | d | 68.52 | 81.03 | 88.10 | 86.32 | 82.47 | 71.07 | c | 52.97 | 40.59 | d | 62.36 | ||||||||||
1963 | 32.71 | 50.52 | c | 51.81 | d | 54.29 | f | 75.07 | c | 76.68 | b | 90.73 | a | 90.52 | 81.93 | 70.29 | 44.55 | a | 28.00 | a | 62.98 | a | ||||
1964 | 26.33 | a | 27.79 | a | 37.62 | b | 56.20 | 69.58 | 75.30 | ----- | z | 87.74 | 78.93 | 70.23 | 45.83 | 38.71 | 55.84 | a | ||||||||
1965 | 35.84 | 42.00 | 48.06 | 59.77 | 66.67 | a | 77.60 | 87.67 | a | 83.83 | a | 67.73 | 70.13 | 49.97 | a | 28.73 | a | 59.83 | ||||||||
1966 | 34.42 | 32.75 | 49.14 | b | 62.47 | 75.65 | 81.13 | 91.71 | 88.32 | 80.14 | b | 62.97 | 50.23 | 30.13 | a | 61.59 | ||||||||||
1967 | 37.13 | a | 42.82 | 49.43 | a | 53.53 | 67.19 | 73.34 | a | 89.45 | b | 91.03 | 80.79 | a | 64.19 | 51.59 | a | 28.32 | 60.74 | |||||||
1968 | 26.90 | 35.52 | 51.45 | 54.62 | a | 67.48 | 79.17 | 90.55 | 80.68 | 74.28 | a | ----- | z | 42.73 | 33.87 | 57.93 | a | |||||||||
1969 | ----- | z | 35.11 | a | 38.03 | 61.70 | 78.13 | 75.03 | a | 89.94 | 92.13 | 81.17 | 55.86 | c | 50.14 | b | 39.42 | 63.33 | a | |||||||
1970 | 37.32 | 48.21 | 48.40 | a | 52.90 | 70.16 | 81.03 | 89.06 | 92.26 | 74.28 | a | 58.32 | 47.27 | 33.87 | 61.09 | |||||||||||
1971 | 33.71 | 39.25 | 47.13 | 58.03 | 68.77 | 78.21 | b | 89.77 | a | 91.69 | b | 74.36 | b | 57.00 | b | 44.36 | b | 31.84 | 59.51 | |||||||
1972 | 34.16 | 41.66 | 56.57 | a | 58.30 | 73.83 | a | 82.30 | 89.17 | a | 89.58 | 73.80 | 61.90 | 43.73 | ----- | z | 64.09 | a | ||||||||
1973 | 26.19 | 32.18 | 43.63 | a | 55.80 | 71.45 | 80.57 | 88.41 | d | 87.33 | d | 71.58 | d | 63.74 | 45.47 | 37.16 | 58.63 | |||||||||
1974 | 29.39 | 33.82 | 50.23 | 56.93 | 69.35 | 84.00 | 90.20 | a | 86.29 | c | 79.50 | b | 65.29 | 48.93 | b | 32.81 | 60.56 | |||||||||
1975 | 29.62 | b | 34.85 | a | 44.35 | 49.67 | c | 62.52 | 73.00 | 90.19 | 84.28 | b | 78.10 | 62.06 | 43.24 | a | 37.10 | b | 57.42 | |||||||
1976 | 29.43 | a | 32.59 | 36.94 | 56.03 | 72.29 | 76.90 | a | 90.23 | 83.16 | 78.57 | 63.90 | 51.87 | 40.58 | 59.37 | |||||||||||
1977 | 30.39 | 37.89 | 44.77 | 65.45 | a | 63.81 | 86.00 | 88.67 | d | 85.66 | b | 75.10 | 64.97 | 48.00 | 40.69 | b | 60.95 | |||||||||
1978 | 37.32 | 42.32 | 54.42 | 57.87 | 64.55 | 79.47 | 90.16 | 85.32 | 72.72 | a | 68.27 | a | 40.93 | a | 31.53 | a | 60.41 | |||||||||
1979 | 21.84 | 33.93 | 43.34 | b | 57.79 | a | 69.74 | 79.83 | 89.13 | 87.06 | 83.59 | a | 68.00 | a | 42.10 | 38.13 | a | 59.54 | ||||||||
1980 | 35.80 | a | 40.93 | 47.27 | a | 62.33 | 66.00 | a | 78.60 | 90.74 | 86.50 | a | 78.20 | 63.43 | a | 49.43 | 34.71 | 61.16 | ||||||||
1981 | 33.29 | 39.79 | 52.65 | 62.10 | 65.97 | 79.07 | a | 90.66 | b | 92.32 | 81.67 | 60.47 | a | 51.50 | 42.40 | a | 62.66 | |||||||||
1982 | 31.26 | 33.19 | a | 48.74 | 54.37 | 66.58 | 77.77 | 86.13 | 89.58 | 72.57 | 57.68 | 42.93 | a | 33.47 | a | 57.85 | ||||||||||
1983 | 37.80 | a | 41.75 | 49.52 | 51.38 | a | 63.65 | 76.47 | 86.43 | a | 86.48 | 75.93 | 62.00 | 44.21 | a | 30.97 | 58.88 | |||||||||
1984 | 25.03 | a | 28.68 | a | 43.35 | 55.20 | 70.29 | 76.10 | 88.61 | 85.23 | 74.00 | a | 53.77 | a | 43.60 | 31.31 | e | 56.26 | ||||||||
1985 | 21.64 | f | 25.04 | c | 36.52 | d | 63.34 | a | 71.48 | b | 80.00 | 88.52 | 84.32 | 69.43 | 62.14 | b | 34.04 | e | 22.16 | 57.91 | a | |||||
1986 | 28.06 | 43.71 | 56.94 | 55.53 | 66.10 | 84.93 | b | 84.19 | 88.74 | 69.27 | 61.19 | 47.30 | 35.90 | 60.16 | ||||||||||||
1987 | 24.00 | 39.61 | 50.32 | 66.73 | 71.10 | 80.57 | 84.29 | 86.52 | 81.77 | 69.13 | 45.24 | a | 33.45 | 61.06 | ||||||||||||
1988 | 26.87 | 36.59 | 48.65 | 62.52 | a | 69.48 | 85.00 | b | 91.68 | 88.32 | 74.33 | 72.00 | 45.50 | 27.32 | c | 60.69 | ||||||||||
1989 | 23.42 | 27.07 | 47.90 | 63.57 | 70.16 | 78.20 | 92.35 | 87.32 | 78.13 | 64.29 | 48.70 | 32.74 | 59.49 | |||||||||||||
1990 | 37.13 | 35.86 | 52.35 | 64.48 | a | 66.32 | 79.87 | 89.81 | 87.55 | 82.33 | 62.74 | 47.50 | 24.83 | a | 60.90 | |||||||||||
1991 | 23.30 | a | 35.18 | 48.42 | 54.63 | 62.87 | 77.10 | 88.81 | 87.77 | 74.90 | 65.10 | 42.97 | 27.10 | 57.35 | ||||||||||||
1992 | 24.61 | 40.59 | 57.74 | 67.33 | 75.29 | 81.20 | 84.48 | 88.87 | 76.63 | 66.65 | 38.57 | 29.58 | 60.96 | |||||||||||||
1993 | 24.61 | 28.14 | 44.81 | 55.47 | 71.50 | a | 72.57 | 78.50 | a | 82.16 | 75.17 | 61.23 | 41.77 | 33.13 | 55.75 | |||||||||||
1994 | 39.40 | a | 38.79 | 54.55 | 62.30 | 74.35 | 83.43 | 90.87 | 89.97 | 80.67 | 59.61 | 37.80 | 35.39 | 62.26 | ||||||||||||
1995 | 35.16 | 46.57 | 49.42 | 56.90 | 62.60 | a | 74.07 | 86.40 | a | 87.74 | 77.73 | 62.23 | 52.63 | 42.83 | a | 61.19 | ||||||||||
1996 | 37.35 | 35.54 | a | 50.81 | 58.27 | 66.61 | 81.63 | 89.48 | 87.29 | 72.34 | a | 62.94 | 49.53 | 38.77 | a | 60.88 | ||||||||||
1997 | 34.77 | 35.71 | 52.97 | a | 55.70 | 71.06 | 78.48 | a | 83.71 | 85.03 | 75.27 | 60.94 | 46.77 | 28.74 | 59.10 | |||||||||||
1998 | 38.35 | 40.71 | 45.42 | 56.17 | 67.06 | 70.70 | 89.48 | 87.06 | 77.63 | 61.58 | 49.70 | 31.65 | 59.63 | |||||||||||||
1999 | 39.81 | 40.57 | 54.68 | 54.77 | 64.61 | 76.70 | 87.90 | 86.42 | 76.07 | 68.84 | 56.77 | 36.06 | 61.93 | |||||||||||||
2000 | 39.94 | 44.69 | 50.84 | 64.07 | 70.68 | 81.67 | 91.35 | 90.29 | 75.50 | 62.77 | 38.71 | b | 34.87 | 62.11 | ||||||||||||
2001 | 24.26 | 33.78 | a | 50.35 | 58.30 | 73.52 | 80.17 | 90.32 | 90.35 | 82.47 | 67.31 | b | 49.87 | 27.23 | a | 60.66 | ||||||||||
2002 | 28.90 | 24.29 | 42.13 | 60.03 | 68.90 | 81.10 | 92.74 | 86.74 | 76.60 | 59.71 | 44.63 | 39.48 | 58.77 | |||||||||||||
2003 | 42.97 | a | 37.11 | 51.39 | c | 59.63 | 69.93 | a | 80.17 | 94.48 | 89.23 | 76.73 | 69.87 | 39.45 | a | 38.80 | a | 62.48 | ||||||||
2004 | 22.71 | 29.17 | 51.77 | 63.00 | i | 68.13 | 79.10 | 87.42 | 83.90 | 74.97 | 61.84 | 45.37 | 36.58 | 58.27 | a | |||||||||||
2005 | 31.81 | 28.64 | 42.68 | 58.07 | 68.17 | a | 74.40 | 90.84 | 86.52 | 75.50 | 64.39 | 48.34 | a | 33.19 | 58.55 | |||||||||||
2006 | 36.50 | a | 34.86 | 46.00 | a | 61.13 | 72.29 | 83.17 | 92.55 | 87.39 | 73.26 | c | 59.13 | 48.39 | b | 37.00 | 60.97 | |||||||||
2007 | 29.03 | 42.84 | c | 51.89 | c | 61.10 | a | 70.61 | c | 80.92 | f | 93.69 | b | 88.74 | d | 77.54 | f | 63.52 | h | 53.40 | j | 38.67 | p | 62.56 | e | |
2008 | 26.33 | g | 33.81 | c | 44.23 | a | 54.07 | 65.21 | b | 77.18 | b | 90.89 | c | 88.13 | a | 77.33 | 63.87 | 50.90 | 36.65 | e | 62.03 | a | ||||
2009 | 32.87 | 34.93 | 44.37 | a | 56.93 | a | 70.30 | a | 75.35 | g | 87.76 | b | 84.58 | 81.93 | 54.84 | 49.83 | 27.10 | 56.86 | a | |||||||
2010 | 29.19 | 33.39 | 47.90 | 56.83 | a | 59.42 | 75.93 | a | 91.30 | a | 88.42 | 80.90 | 66.39 | 44.63 | 36.53 | a | 59.24 | |||||||||
2011 | 29.10 | b | 38.93 | 45.90 | 52.03 | 60.68 | 76.73 | 88.26 | 90.55 | 82.00 | 65.39 | 44.70 | 32.90 | 58.93 | ||||||||||||
2012 | 39.47 | a | 40.86 | 55.16 | 65.62 | f | 71.00 | b | 82.52 | a | 90.90 | 90.77 | 81.76 | a | 65.33 | a | 53.13 | 36.45 | 64.31 | a | ||||||
2013 | 19.42 | 29.96 | 47.97 | 58.10 | 69.66 | b | 84.37 | 92.48 | 90.45 | 76.50 | 60.71 | 50.31 | d | 28.23 | 59.01 | |||||||||||
2014 | 31.74 | 42.29 | 53.35 | 58.23 | 70.26 | 78.57 | 90.29 | 82.03 | 78.93 | 67.19 | 47.90 | 41.81 | 61.88 | |||||||||||||
2015 | 35.19 | 50.89 | 58.58 | 61.37 | 66.10 | 86.97 | 84.48 | 87.10 | 80.70 | 70.16 | l | 46.87 | 33.35 | 62.87 | a | |||||||||||
2016 | 30.52 | 36.14 | 53.39 | 63.03 | 68.06 | 85.20 | 90.23 | i | 84.25 | w | 76.67 | 64.84 | 54.07 | 32.97 | 56.49 | b | ||||||||||
2017 | 25.16 | 41.04 | 55.23 | 56.43 | 68.87 | 82.27 | 91.42 | 87.87 | 74.17 | 60.81 | 51.63 | 33.16 | 60.67 | |||||||||||||
2018 | 37.90 | 40.68 | 45.42 | 60.93 | 71.58 | 81.63 | 92.39 | 88.00 | 82.20 | 61.61 | 45.57 | 31.55 | 61.62 | |||||||||||||
2019 | 31.13 | 35.93 | 48.23 | 58.60 | 64.65 | 77.33 | 88.55 | 88.26 | 75.00 | 53.81 | 49.47 | 30.13 | 58.42 | |||||||||||||
2020 | 35.61 | 34.90 | 50.65 | 58.67 | 71.35 | 77.23 | 87.77 | 92.55 | 79.63 | 65.13 | 50.00 | 34.48 | 61.50 | |||||||||||||
2021 | 34.06 | 39.11 | 51.06 | 59.60 | 70.58 | 87.80 | 93.74 | 84.16 | 80.07 | 60.00 | 50.97 | 39.10 | 62.52 | |||||||||||||
2022 | 29.52 | 34.71 | 50.68 | 55.60 | 64.65 | 78.87 | 91.94 | 86.61 | 82.60 | 64.77 | 40.97 | 32.45 | 59.45 | |||||||||||||
2023 | 29.58 | 26.68 | 36.61 | 50.73 | 73.03 | 75.13 | 91.03 | 84.68 | 76.40 | 62.48 | 47.69 | a | 36.77 | a | 57.57 | |||||||||||
2024 | 33.55 | 40.31 | 51.23 | 58.94 | l | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 41.69 | i | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 31.67 | 37.21 | 48.69 | 58.56 | 69.01 | 79.64 | 89.51 | 87.58 | 77.27 | 63.43 | 46.73 | 34.23 | 60.24 | |||||||||||||
S.D. | 5.41 | 5.83 | 5.00 | 3.98 | 3.88 | 3.75 | 2.82 | 2.65 | 3.80 | 4.13 | 4.39 | 4.66 | 1.69 | |||||||||||||
SKEW | -0.11 | -0.07 | -0.56 | 0.13 | 0.00 | 0.02 | -1.08 | -0.21 | -0.29 | -0.13 | -0.38 | -0.15 | -0.56 | |||||||||||||
MAX | 42.97 | 50.89 | 58.58 | 67.33 | 78.73 | 87.80 | 95.00 | 92.55 | 83.59 | 72.00 | 56.77 | 43.55 | 63.04 | |||||||||||||
MIN | 19.42 | 24.29 | 36.52 | 49.67 | 59.42 | 70.70 | 78.50 | 80.68 | 67.73 | 53.77 | 34.04 | 22.16 | 55.75 | |||||||||||||
YRS | 65 | 67 | 68 | 64 | 67 | 65 | 65 | 66 | 66 | 64 | 66 | 66 | 53 |