YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1950 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1951 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1952 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1953 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1954 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1955 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1956 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1957 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1958 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1959 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1960 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1961 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1962 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1963 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1964 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1965 | 30.40 | p | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1966 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 83.61 | 78.30 | 56.32 | 40.54 | b | ----- | z | 64.69 | h | |||
1967 | ----- | z | ----- | z | 48.90 | a | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 48.90 | k |
1968 | 29.07 | b | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 80.52 | f | 76.39 | ----- | z | ----- | z | 40.43 | b | 25.43 | a | 42.83 | h | |
1969 | 17.50 | c | 31.64 | 46.19 | 55.79 | a | 73.39 | 81.23 | 82.93 | a | 82.16 | 71.27 | 54.94 | 42.25 | b | 29.93 | c | 55.77 | ||||||||
1970 | 24.71 | 39.82 | 44.52 | b | 52.07 | a | 67.35 | 83.40 | 85.45 | 86.83 | a | 67.54 | b | 56.55 | b | 37.07 | a | 25.81 | 55.93 | |||||||
1971 | 31.77 | a | 40.30 | a | 38.03 | a | 54.00 | d | 66.90 | j | 68.00 | d | 85.54 | g | 88.87 | 66.60 | 51.50 | i | 36.12 | e | ----- | z | 52.96 | d | ||
1972 | 26.29 | 33.24 | 44.16 | 51.00 | e | 68.23 | a | 71.50 | 79.17 | b | 83.19 | 66.00 | 59.27 | a | 40.42 | d | 26.90 | 54.12 | ||||||||
1973 | 26.13 | 37.81 | a | 48.13 | 58.72 | a | 68.03 | 72.83 | a | 85.10 | 84.06 | 73.33 | 54.21 | b | 33.12 | e | ----- | z | 58.32 | a | ||||||
1974 | 27.39 | 38.29 | 42.48 | 54.07 | a | 62.45 | b | 78.77 | 78.30 | a | 84.03 | a | 78.62 | a | 61.83 | a | 40.22 | g | 32.23 | 58.04 | a | |||||
1975 | 26.96 | e | 32.27 | b | 40.69 | b | 51.70 | 64.84 | 71.45 | a | 86.87 | a | 75.43 | a | 76.18 | b | 53.42 | 38.20 | 30.93 | a | 54.08 | |||||
1976 | 30.55 | 35.62 | 41.47 | a | 54.53 | 65.57 | a | 70.17 | 80.13 | 73.87 | 76.00 | 58.55 | 41.47 | 30.10 | 54.83 | |||||||||||
1977 | 23.87 | 40.29 | 46.90 | 66.33 | 63.77 | 80.03 | 81.32 | 87.26 | 67.63 | 56.26 | 35.37 | 26.48 | 56.29 | |||||||||||||
1978 | 29.10 | 36.18 | 46.74 | 55.40 | 64.10 | 77.53 | 83.87 | 78.10 | 63.93 | 58.77 | 34.73 | 25.58 | 54.50 | |||||||||||||
1979 | 19.74 | 32.46 | 48.71 | 59.91 | g | 68.87 | 76.60 | 86.55 | 83.03 | 74.63 | 60.81 | 35.73 | 34.23 | 56.49 | a | |||||||||||
1980 | 21.68 | 33.72 | 44.45 | 61.60 | 67.97 | a | 69.50 | 82.29 | 77.65 | 71.10 | 59.84 | 38.20 | 29.58 | 54.80 | ||||||||||||
1981 | 35.48 | 35.54 | 51.10 | 58.00 | 65.23 | 67.27 | 79.52 | 88.58 | 72.77 | 53.16 | 40.93 | 27.23 | 56.23 | |||||||||||||
1982 | 28.35 | 33.75 | 45.10 | 52.97 | 65.03 | 78.77 | 78.23 | 79.84 | 70.73 | 54.42 | 34.66 | a | 27.45 | 54.11 | ||||||||||||
1983 | 34.30 | a | 36.39 | 46.61 | 58.37 | 70.45 | 71.83 | 74.94 | 82.03 | 66.20 | 56.61 | 38.17 | 19.23 | 54.59 | ||||||||||||
1984 | 32.97 | 36.21 | 48.00 | 53.57 | 60.55 | 69.13 | 84.45 | 82.00 | 67.60 | 51.57 | a | 34.97 | 20.45 | 53.45 | ||||||||||||
1985 | 24.81 | 31.57 | 45.06 | 59.43 | 69.87 | 75.60 | 90.68 | 81.73 | a | 65.72 | a | 51.23 | 27.03 | 23.13 | a | 53.82 | ||||||||||
1986 | 32.06 | 35.07 | 48.06 | 55.83 | 67.71 | 79.33 | 76.26 | 89.58 | 65.37 | 62.06 | 39.10 | 28.48 | 56.58 | |||||||||||||
1987 | 28.48 | 41.43 | 49.26 | 62.46 | b | 70.16 | 80.31 | a | 78.48 | 82.84 | 80.72 | a | 64.74 | 43.57 | 26.94 | 59.12 | ||||||||||
1988 | 28.03 | 40.34 | 48.45 | 60.50 | 66.27 | a | 72.50 | 82.29 | 83.17 | a | 73.59 | a | 63.48 | 37.23 | 28.32 | 57.01 | ||||||||||
1989 | 31.00 | 30.68 | 42.71 | 61.77 | 65.84 | 76.62 | a | 81.76 | b | 78.60 | a | 77.10 | a | 56.94 | 41.60 | 31.23 | 56.32 | |||||||||
1990 | 32.35 | 34.54 | 50.23 | 62.83 | 63.39 | 71.27 | 84.55 | 81.71 | 80.80 | 50.87 | 41.13 | 20.97 | 56.22 | |||||||||||||
1991 | 28.39 | 44.32 | 46.03 | 57.97 | a | 64.06 | 69.79 | a | 81.77 | 81.48 | 78.53 | 57.52 | 36.53 | 32.32 | 56.56 | |||||||||||
1992 | 31.13 | 39.93 | 57.23 | 60.00 | 72.83 | a | 81.72 | a | 78.97 | 83.00 | 69.30 | 57.47 | a | 37.93 | 24.48 | 57.83 | ||||||||||
1993 | 23.68 | 34.11 | a | 44.87 | 54.17 | 72.52 | b | 70.87 | 72.65 | 78.29 | 76.17 | 61.65 | 36.43 | 28.53 | a | 54.49 | ||||||||||
1994 | 35.19 | 31.32 | 51.94 | 61.20 | 69.60 | a | 73.07 | 87.42 | 82.32 | 79.61 | b | 58.10 | a | 32.37 | 28.23 | 57.53 | ||||||||||
1995 | 28.94 | 40.11 | 44.58 | 55.83 | 70.84 | 73.70 | 81.42 | 74.58 | 77.10 | a | 52.74 | 38.07 | 27.61 | 55.46 | ||||||||||||
1996 | 25.00 | a | 33.69 | 45.06 | 56.13 | 61.42 | 72.53 | 84.58 | 83.16 | 69.48 | c | 52.00 | 35.17 | 22.52 | 53.40 | |||||||||||
1997 | 30.00 | 36.93 | 42.26 | 52.20 | 67.77 | 70.33 | 79.00 | 82.35 | 72.43 | 51.81 | 40.57 | 29.52 | 54.60 | |||||||||||||
1998 | 28.29 | 38.07 | 47.00 | 59.03 | 68.65 | 73.70 | 85.32 | 85.87 | 80.57 | 57.06 | 39.97 | 26.67 | a | 57.52 | ||||||||||||
1999 | 33.48 | 35.57 | 44.13 | 56.20 | 62.71 | 70.13 | 79.68 | 82.77 | 72.53 | 55.17 | a | 41.07 | 32.13 | 55.46 | ||||||||||||
2000 | 28.94 | 36.21 | 45.94 | 61.30 | 63.81 | 73.57 | 81.16 | 81.74 | 71.13 | 55.90 | 36.73 | 27.72 | b | 55.35 | ||||||||||||
2001 | 31.42 | 35.04 | 48.84 | 56.37 | 70.47 | a | 71.13 | 83.26 | 85.19 | 76.87 | 53.81 | 41.27 | 29.06 | 56.89 | ||||||||||||
2002 | 32.45 | 37.41 | a | 41.77 | 57.70 | 64.42 | 78.00 | 85.71 | 83.35 | 73.67 | 59.68 | 42.37 | 32.32 | 57.40 | ||||||||||||
2003 | 31.45 | 40.67 | a | 46.55 | 56.60 | 66.03 | 80.17 | 88.81 | 86.74 | 76.33 | 59.58 | 34.63 | 28.03 | 57.97 | ||||||||||||
2004 | 29.16 | 38.62 | 51.29 | 65.17 | 67.26 | 79.46 | b | 86.26 | 84.77 | 69.97 | 58.71 | 40.70 | 33.29 | 58.72 | ||||||||||||
2005 | 27.97 | 42.43 | 51.68 | 60.20 | 69.55 | 72.67 | 83.94 | 86.65 | 71.57 | 56.33 | a | 33.83 | 26.55 | 56.95 | ||||||||||||
2006 | 32.97 | 35.96 | 43.63 | a | 57.66 | a | 68.45 | 76.66 | a | 89.07 | b | 84.76 | b | 74.39 | b | 60.61 | c | 33.00 | b | 26.93 | b | 57.01 | ||||
2007 | 26.69 | b | 36.89 | a | 47.00 | 53.45 | s | 69.61 | 79.60 | y | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 45.05 | h | ||
2008 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 36.25 | v | 24.71 | 24.71 | k | |
2009 | 28.55 | b | 35.85 | a | 40.12 | e | 58.65 | g | 66.48 | b | 77.67 | c | 86.97 | a | 84.43 | c | 77.41 | a | 52.03 | 39.50 | 25.23 | 55.84 | a | |||
2010 | 32.14 | c | 39.50 | 48.39 | 55.63 | 62.03 | a | 71.73 | 83.00 | 81.84 | 68.73 | 59.63 | a | 36.40 | 28.65 | 55.64 | ||||||||||
2011 | 30.97 | 32.46 | 41.19 | 50.33 | 62.26 | 70.73 | 78.23 | 85.97 | 79.23 | 56.16 | 37.37 | 31.67 | a | 54.71 | ||||||||||||
2012 | 27.84 | 37.66 | 43.39 | 57.40 | 66.87 | 68.00 | 86.35 | k | 87.35 | 79.93 | 56.29 | 38.50 | 29.84 | 53.92 | a | |||||||||||
2013 | 24.77 | 39.96 | 47.29 | 56.00 | 69.10 | 73.70 | 89.55 | 83.06 | 74.47 | 57.19 | 39.20 | 25.77 | 56.67 | |||||||||||||
2014 | 32.74 | 29.43 | 43.97 | 56.80 | 69.94 | 75.80 | 92.16 | f | 86.26 | 74.57 | 59.16 | 38.37 | 30.32 | 54.30 | a | |||||||||||
2015 | 29.84 | 40.86 | 53.26 | 59.10 | 73.23 | 85.13 | 88.97 | 85.55 | 71.70 | 62.13 | 37.43 | 27.00 | 59.52 | |||||||||||||
2016 | 28.84 | 37.97 | 45.97 | 66.90 | 71.29 | 77.33 | 80.45 | 85.55 | 71.60 | 51.94 | 44.60 | 24.45 | 57.24 | |||||||||||||
2017 | 22.87 | 31.36 | 41.39 | 53.30 | 69.55 | 76.93 | 89.48 | 90.23 | 76.20 | 54.06 | 36.70 | 26.00 | 55.67 | |||||||||||||
2018 | 31.03 | 35.68 | 43.55 | 55.47 | 75.26 | 75.20 | 88.16 | 85.19 | 71.07 | 56.77 | 41.40 | 29.84 | 57.38 | |||||||||||||
2019 | 30.74 | 26.04 | 42.45 | 57.43 | 70.42 | 77.03 | 82.29 | 85.87 | 68.87 | 51.32 | 41.13 | 28.19 | 55.15 | |||||||||||||
2020 | 30.48 | 38.14 | 46.10 | 58.47 | 67.42 | 73.03 | 84.58 | 88.00 | 76.87 | 57.26 | 35.80 | 29.16 | 57.11 | |||||||||||||
2021 | 31.71 | 31.89 | 46.58 | 60.37 | 68.81 | 81.83 | 91.35 | 84.32 | 71.80 | 54.23 | 39.70 | 26.61 | 57.43 | |||||||||||||
2022 | 25.84 | 38.68 | 48.00 | 51.23 | 60.00 | 72.20 | 87.19 | 89.52 | 77.50 | 67.74 | 30.27 | 20.30 | a | 55.71 | ||||||||||||
2023 | 31.74 | 33.54 | 41.94 | 52.80 | 74.61 | 78.00 | 87.03 | 86.39 | 72.80 | 57.45 | 38.57 | 32.03 | 57.24 | |||||||||||||
2024 | 25.84 | 39.10 | 49.29 | 57.92 | f | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 38.08 | i | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 28.82 | 36.23 | 46.05 | 57.25 | 67.48 | 74.82 | 83.39 | 83.48 | 73.22 | 56.93 | 37.92 | 27.67 | 56.10 | |||||||||||||
S.D. | 3.72 | 3.63 | 3.60 | 3.88 | 3.63 | 4.33 | 4.25 | 3.73 | 4.50 | 3.73 | 3.37 | 3.37 | 1.49 | |||||||||||||
SKEW | -0.72 | -0.28 | 0.43 | 0.43 | -0.03 | 0.32 | -0.23 | -0.61 | -0.14 | 0.46 | -0.67 | -0.46 | 0.13 | |||||||||||||
MAX | 35.48 | 44.32 | 57.23 | 66.90 | 75.26 | 85.13 | 91.35 | 90.23 | 80.80 | 67.74 | 44.60 | 34.23 | 59.52 | |||||||||||||
MIN | 17.50 | 26.04 | 38.03 | 50.33 | 60.00 | 67.27 | 72.65 | 73.87 | 63.93 | 50.87 | 27.03 | 19.23 | 53.40 | |||||||||||||
YRS | 56 | 55 | 56 | 51 | 53 | 53 | 50 | 55 | 54 | 53 | 54 | 53 | 46 |