YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
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 | 81.64 | q | 71.90 | 61.06 | 42.17 | 24.93 | a | 50.02 | h | |||
1961 | 22.52 | 34.41 | a | 44.68 | 48.70 | 67.23 | 81.90 | 80.61 | 83.97 | 68.37 | k | 61.03 | 39.63 | 21.03 | 53.25 | a | ||||||||||
1962 | 16.26 | 19.96 | 32.77 | 52.67 | 69.39 | 76.27 | 77.97 | 81.97 | 67.00 | j | 60.32 | 43.57 | 28.16 | 50.85 | a | |||||||||||
1963 | 12.61 | 23.50 | 44.58 | 58.50 | 65.77 | 80.37 | 84.06 | 79.97 | 72.97 | 68.45 | 45.80 | 17.07 | a | 54.47 | ||||||||||||
1964 | 26.84 | 32.45 | 33.06 | 57.03 | 73.71 | 80.63 | 87.58 | 79.16 | 69.55 | a | 59.29 | 40.40 | 17.39 | 54.76 | ||||||||||||
1965 | 15.39 | 19.71 | 25.94 | 50.93 | 68.19 | 76.97 | 80.06 | 79.16 | 58.80 | 59.68 | 38.83 | 31.42 | 50.42 | |||||||||||||
1966 | 8.70 | a | 22.39 | 41.87 | 48.47 | 66.80 | a | 79.13 | 87.57 | a | 77.94 | 72.13 | 58.71 | 34.70 | 23.30 | a | 51.81 | |||||||||
1967 | 21.13 | 18.04 | 36.94 | 54.40 | 63.29 | 74.77 | 81.97 | a | 80.39 | 72.13 | 57.00 | 39.13 | 26.45 | 52.14 | ||||||||||||
1968 | 20.68 | 21.76 | 49.68 | 58.07 | 64.35 | 78.17 | 81.65 | 81.90 | 71.40 | 59.23 | 39.30 | 20.68 | 53.90 | |||||||||||||
1969 | 12.32 | 23.75 | 30.65 | 56.70 | 69.84 | 71.80 | 81.81 | 85.68 | 71.90 | 52.74 | 39.43 | 24.81 | 51.79 | |||||||||||||
1970 | 12.00 | 25.89 | 31.68 | 52.93 | 69.26 | 80.10 | 86.26 | 82.35 | 71.47 | 56.58 | 35.40 | 23.10 | 52.25 | |||||||||||||
1971 | 12.19 | 23.61 | 34.52 | 57.72 | a | 68.35 | 80.53 | 78.30 | a | 81.58 | 71.70 | 59.55 | 38.17 | 23.39 | 52.47 | |||||||||||
1972 | 13.45 | 17.79 | 33.68 | 50.43 | 71.26 | 78.80 | 80.03 | 79.94 | 68.53 | 53.90 | 35.73 | 16.94 | 50.04 | |||||||||||||
1973 | 23.52 | 28.29 | 45.13 | 55.27 | 67.87 | 79.10 | 82.06 | 81.45 | 68.03 | 63.74 | 40.17 | 21.77 | 54.70 | |||||||||||||
1974 | 18.45 | 26.07 | 33.90 | 56.87 | 63.65 | 78.17 | 87.77 | 77.39 | 69.83 | 62.61 | 39.86 | a | 29.77 | 53.70 | ||||||||||||
1975 | 22.06 | 22.54 | 30.35 | 43.67 | 73.30 | a | 76.73 | 87.29 | 80.77 | 66.73 | 62.61 | 43.00 | 23.45 | 52.71 | ||||||||||||
1976 | 18.87 | 34.10 | 38.35 | 63.47 | 70.87 | 83.03 | 87.48 | 85.35 | 76.27 | 55.03 | 34.93 | 20.55 | 55.69 | |||||||||||||
1977 | 7.58 | 31.25 | 44.16 | 64.20 | 78.13 | 79.40 | 84.97 | 76.65 | 68.87 | 58.48 | 37.87 | 17.73 | a | 54.11 | ||||||||||||
1978 | 13.90 | 20.43 | 37.55 | 53.30 | 71.90 | 78.10 | 81.45 | 82.58 | 76.67 | 60.87 | 38.23 | 20.52 | 52.96 | |||||||||||||
1979 | 8.35 | 16.59 | a | 33.16 | 48.60 | 63.77 | 78.37 | 82.37 | a | 77.48 | 75.20 | 56.61 | 38.37 | 32.52 | 50.95 | |||||||||||
1980 | 20.58 | 22.97 | 34.03 | 62.83 | 75.81 | 77.79 | a | 85.42 | 79.68 | 70.43 | 54.42 | 44.63 | 26.13 | 54.56 | ||||||||||||
1981 | 28.81 | 31.75 | 48.68 | 60.03 | 69.19 | 76.53 | 82.65 | 79.00 | a | 70.77 | 55.06 | 46.50 | 21.90 | 55.91 | ||||||||||||
1982 | 8.87 | a | 22.96 | a | 33.00 | a | 53.97 | 72.07 | a | 74.83 | a | 84.74 | 81.61 | 69.52 | a | 57.52 | 35.37 | 29.90 | 52.03 | |||||||
1983 | 24.87 | 30.86 | 39.23 | 53.23 | 67.33 | a | 76.97 | a | 86.35 | 85.90 | a | 71.59 | a | 55.50 | a | 37.57 | 8.10 | a | 53.12 | |||||||
1984 | 20.16 | 33.76 | 33.68 | 57.48 | a | 68.60 | a | 77.67 | 83.23 | a | 84.18 | c | 66.41 | a | 58.59 | b | 41.79 | a | 24.10 | 54.14 | ||||||
1985 | 20.19 | 24.29 | 43.70 | a | 60.08 | f | 74.03 | a | 74.36 | b | 83.25 | c | 75.06 | 66.41 | a | 56.77 | a | 28.48 | a | 15.08 | f | 54.65 | b | |||
1986 | 24.13 | 21.04 | a | 41.06 | 58.80 | 70.10 | 80.45 | a | 83.40 | a | 77.48 | 67.23 | 57.87 | a | 35.23 | 31.65 | 54.04 | |||||||||
1987 | 29.23 | a | 39.75 | 47.29 | 69.43 | 74.70 | a | 83.30 | 86.03 | 80.07 | a | 73.90 | a | 54.94 | 44.93 | 28.36 | c | 59.33 | ||||||||
1988 | 20.77 | e | 21.97 | 41.29 | 62.66 | a | 80.27 | a | 88.60 | 91.94 | 85.58 | 74.00 | 55.07 | b | 38.10 | 26.90 | 57.26 | |||||||||
1989 | 28.97 | a | 17.46 | 33.23 | a | 55.38 | a | 72.55 | 79.24 | a | 87.00 | 82.29 | 71.97 | 63.32 | 34.93 | 16.97 | 53.61 | |||||||||
1990 | 34.52 | 32.68 | 43.74 | 58.67 | c | 69.14 | b | 81.34 | a | 82.32 | 81.90 | 75.45 | a | 58.90 | 42.17 | 23.14 | b | 57.00 | ||||||||
1991 | 20.55 | 33.93 | 39.77 | a | 57.86 | b | 74.63 | a | 83.34 | a | 84.48 | 84.17 | a | 70.50 | b | 58.39 | 30.24 | a | 27.52 | 55.45 | ||||||
1992 | 28.63 | a | 33.45 | 43.84 | 53.03 | 75.67 | a | 78.13 | 76.53 | a | 76.77 | 71.50 | d | 59.03 | a | 33.07 | a | 27.64 | c | 54.78 | ||||||
1993 | 24.31 | b | 26.89 | a | 41.17 | b | 56.86 | a | 69.26 | d | 74.93 | a | 79.43 | a | 80.30 | a | 66.21 | b | 58.43 | a | 36.38 | a | 26.96 | c | 53.43 | |
1994 | 8.62 | g | 19.60 | c | 41.26 | d | 58.48 | c | 73.40 | a | 80.28 | a | 80.54 | e | 78.45 | b | 73.96 | e | 59.68 | 44.30 | c | 30.58 | 58.23 | a | ||
1995 | 23.62 | b | 26.62 | b | 41.68 | 51.07 | c | 67.64 | c | 82.90 | a | 83.20 | a | 82.55 | b | 70.64 | b | 54.76 | b | 33.68 | b | 23.87 | a | 53.52 | ||
1996 | 14.23 | e | 26.42 | e | 32.33 | a | 50.96 | c | 67.37 | d | 79.62 | a | 80.76 | b | 82.14 | c | 71.57 | b | 60.58 | e | 30.93 | a | 17.81 | 51.23 | ||
1997 | 15.30 | a | 28.28 | c | 35.60 | a | 53.85 | c | 66.79 | b | 82.71 | b | 80.45 | b | 79.07 | c | 74.29 | b | 59.63 | d | 33.68 | b | 32.30 | a | 53.50 | |
1998 | 22.73 | a | 36.89 | 38.63 | d | 64.29 | b | 77.83 | b | 76.97 | a | 84.52 | 84.52 | d | 79.30 | c | 61.66 | b | 41.67 | 33.57 | a | 58.55 | ||||
1999 | 18.53 | a | 35.48 | c | 43.03 | b | 57.29 | b | 71.27 | e | 78.76 | a | 87.14 | b | 80.70 | d | 71.19 | d | 61.30 | a | 51.43 | 35.03 | b | 57.60 | ||
2000 | 24.80 | a | 34.50 | a | 51.17 | a | 57.57 | b | 73.42 | e | 76.21 | a | 83.55 | b | 82.71 | c | 74.23 | 63.07 | a | 36.04 | b | 14.27 | a | 55.96 | ||
2001 | 28.03 | a | 20.35 | b | 36.29 | 56.00 | c | 70.28 | b | 79.37 | c | 85.83 | a | 83.71 | 69.85 | c | 52.76 | b | 50.89 | b | 29.60 | a | 55.25 | |||
2002 | 29.43 | c | 33.50 | 29.94 | 50.10 | 61.27 | a | 78.73 | 84.53 | a | 80.06 | 72.30 | 45.79 | c | 39.17 | 32.00 | b | 53.07 | ||||||||
2003 | 22.00 | 21.44 | a | 37.21 | b | 56.38 | a | 67.32 | 76.03 | 80.16 | 83.00 | 69.97 | a | 59.93 | b | 36.35 | d | 29.21 | c | 53.25 | ||||||
2004 | 18.04 | d | 26.61 | a | 42.81 | d | ----- | z | 63.83 | b | 72.28 | a | 77.57 | a | 73.17 | b | 73.76 | a | 57.28 | b | 43.10 | a | ----- | z | 54.84 | b |
2005 | 19.85 | e | 32.46 | d | ----- | z | ----- | z | 62.65 | 78.47 | 84.90 | b | 78.10 | 74.50 | b | 59.10 | b | 42.58 | d | 24.81 | 55.74 | b | ||||
2006 | ----- | z | 24.32 | c | 38.93 | b | 60.97 | a | 68.39 | 78.90 | a | 86.77 | 80.10 | a | 65.97 | 53.00 | a | 43.90 | 33.72 | b | 57.72 | a | ||||
2007 | 25.77 | 18.88 | b | 41.74 | 53.07 | 71.90 | 80.10 | 83.90 | 78.10 | 72.67 | 59.35 | 39.17 | 19.61 | 53.69 | ||||||||||||
2008 | 17.03 | 19.41 | 32.39 | 49.57 | 63.03 | 74.13 | 80.84 | 79.58 | 69.80 | 55.10 | 39.93 | 19.42 | 50.02 | |||||||||||||
2009 | 11.61 | 24.04 | 34.29 | 52.67 | 65.68 | 73.30 | 75.71 | 75.77 | 74.03 | 46.48 | 46.97 | 20.65 | 50.10 | |||||||||||||
2010 | 17.26 | 23.00 | 45.10 | 63.00 | 67.55 | 74.93 | 81.71 | 81.03 | 65.13 | 61.03 | 39.60 | 18.71 | 53.17 | |||||||||||||
2011 | 15.16 | 22.11 | 31.55 | 50.90 | 64.45 | 72.90 | 84.16 | 79.74 | 69.97 | 60.58 | 42.30 | ----- | z | 53.98 | a | |||||||||||
2012 | 30.17 | y | 32.04 | a | 53.32 | 56.59 | a | 70.55 | 78.31 | a | 86.16 | 78.90 | 72.23 | 53.39 | 40.37 | 24.97 | 58.80 | a | ||||||||
2013 | 21.45 | 21.39 | 29.68 | 41.93 | 63.58 | 73.70 | 80.58 | 81.26 | 73.93 | 53.06 | 38.11 | b | 15.73 | a | 49.53 | |||||||||||
2014 | 13.94 | 14.46 | 29.23 | 47.77 | 64.23 | 75.87 | 77.23 | 78.13 | 68.30 | 56.13 | 28.47 | 26.52 | 48.35 | |||||||||||||
2015 | 22.87 | 17.25 | 40.81 | 57.13 | 65.77 | 75.97 | 79.97 | 76.48 | 75.77 | 61.86 | i | ----- | z | ----- | z | 56.89 | c | |||||||||
2016 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 69.93 | b | 57.60 | a | 49.73 | 23.45 | 50.18 | h | ||
2017 | 22.55 | 34.86 | 39.03 | 56.00 | 64.81 | 77.30 | 81.23 | 74.74 | 72.03 | 57.90 | 36.07 | 23.32 | 53.32 | |||||||||||||
2018 | 20.42 | 20.96 | 37.63 | a | 42.07 | a | 75.58 | 77.40 | 80.29 | 77.92 | e | 69.20 | e | 49.81 | 30.97 | 29.68 | 50.99 | |||||||||
2019 | 16.03 | 14.57 | 33.26 | 51.03 | a | 61.10 | 77.10 | 81.35 | 76.48 | 71.20 | 51.45 | 33.77 | 25.03 | 49.37 | ||||||||||||
2020 | 22.26 | 26.17 | 40.52 | 51.97 | 65.81 | 80.63 | 83.00 | 79.61 | 67.50 | b | 49.00 | 45.03 | 31.03 | 53.54 | ||||||||||||
2021 | 25.87 | 15.11 | 46.77 | 52.50 | 68.77 | 84.80 | 84.81 | 81.45 | 74.77 | 62.29 | 41.93 | 28.68 | 55.65 | |||||||||||||
2022 | 17.32 | 19.79 | 36.42 | 46.83 | a | 67.81 | 79.17 | 82.61 | 79.90 | u | ----- | z | ----- | z | ----- | z | ----- | z | 49.99 | e | ||||||
2023 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 41.47 | o | 38.13 | 38.13 | k | |
2024 | 22.13 | 38.83 | 43.10 | 55.88 | e | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 39.98 | h | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 19.82 | 25.57 | 38.53 | 54.88 | 69.05 | 78.31 | 82.98 | 80.29 | 71.13 | 57.59 | 39.25 | 24.85 | 53.46 | |||||||||||||
S.D. | 5.99 | 6.55 | 6.03 | 5.46 | 4.37 | 3.17 | 3.21 | 2.87 | 3.36 | 4.18 | 5.07 | 5.84 | 2.37 | |||||||||||||
SKEW | -0.04 | 0.33 | 0.24 | -0.05 | 0.37 | 0.43 | 0.06 | -0.08 | -0.66 | -0.55 | 0.14 | -0.21 | 0.17 | |||||||||||||
MAX | 34.52 | 39.75 | 53.32 | 69.43 | 80.27 | 88.60 | 91.94 | 85.90 | 79.30 | 68.45 | 51.43 | 38.13 | 59.33 | |||||||||||||
MIN | 7.58 | 14.46 | 25.94 | 41.93 | 61.10 | 71.80 | 75.71 | 73.17 | 58.80 | 45.79 | 28.47 | 8.10 | 48.35 | |||||||||||||
YRS | 59 | 62 | 61 | 59 | 61 | 61 | 61 | 60 | 60 | 61 | 61 | 59 | 50 |