YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1952 | ----- | z | ----- | z | ----- | z | 58.83 | 70.42 | 79.50 | 82.43 | a | 84.94 | 78.23 | 58.06 | 42.80 | 25.65 | 64.54 | c | ||||||||
1953 | 21.74 | 26.29 | 36.97 | 47.80 | 64.39 | 74.80 | 82.26 | 83.81 | 74.83 | 67.81 | 45.60 | 27.14 | b | 54.45 | ||||||||||||
1954 | 9.35 | 37.04 | 33.29 | 53.04 | b | 62.61 | 75.86 | a | 83.33 | a | 80.94 | 68.40 | 55.74 | 46.33 | 29.65 | 52.97 | ||||||||||
1955 | 20.29 | 17.15 | a | 29.23 | 63.80 | 74.57 | a | 77.72 | a | 84.42 | 85.61 | 74.03 | 64.00 | 28.97 | 14.84 | 52.89 | ||||||||||
1956 | 18.70 | a | 16.93 | 29.90 | 45.07 | 65.29 | 82.57 | 80.87 | 82.00 | 68.53 | 65.68 | 38.47 | 27.97 | 51.83 | ||||||||||||
1957 | 13.95 | j | 22.93 | 38.61 | 53.70 | 67.90 | 74.80 | 85.84 | 78.03 | 67.53 | 55.42 | 37.33 | 31.61 | 55.79 | a | |||||||||||
1958 | 25.45 | 23.71 | 38.13 | 57.07 | a | 72.65 | 70.50 | 78.19 | 84.74 | 72.50 | 61.52 | 41.53 | 22.74 | 54.06 | ||||||||||||
1959 | 14.45 | 20.68 | 43.39 | 56.87 | 67.90 | 80.67 | 84.68 | 86.97 | 71.63 | 49.35 | 30.79 | a | 34.52 | 53.49 | ||||||||||||
1960 | 18.32 | 20.83 | 26.61 | 51.13 | 68.77 | 75.10 | 85.68 | 84.19 | 74.07 | 61.19 | 41.30 | 21.00 | b | 52.35 | ||||||||||||
1961 | 19.87 | a | 25.93 | 43.48 | 47.80 | 64.19 | 83.17 | 83.84 | 88.61 | 67.77 | 58.94 | 40.63 | 19.17 | a | 53.62 | |||||||||||
1962 | 19.78 | d | 18.96 | 28.65 | 50.97 | 65.58 | 73.93 | 78.03 | 82.29 | 67.20 | 62.81 | 45.13 | 28.77 | 51.84 | ||||||||||||
1963 | 14.58 | 24.75 | 45.10 | 57.50 | t | 65.61 | 78.67 | 83.87 | 81.55 | 73.67 | 71.16 | 46.20 | 17.70 | a | 54.80 | a | ||||||||||
1964 | 26.23 | 31.97 | 31.94 | 54.27 | 71.23 | a | 75.47 | 86.19 | 77.87 | 67.20 | 59.81 | 39.68 | b | 12.55 | 52.87 | |||||||||||
1965 | 11.45 | 18.86 | 25.90 | 49.07 | 65.81 | 75.87 | 80.13 | 80.94 | 56.70 | 61.06 | 37.90 | a | 30.76 | b | 49.54 | |||||||||||
1966 | 4.65 | 17.93 | 39.52 | 46.37 | 64.87 | 76.77 | 86.65 | 77.74 | 73.27 | 57.87 | a | 34.83 | a | 22.42 | 50.24 | |||||||||||
1967 | 19.94 | 16.64 | 38.97 | 48.10 | 61.87 | 74.47 | 82.61 | 82.30 | a | 73.90 | a | 55.04 | c | ----- | z | ----- | z | 55.38 | b | |||||||
1968 | ----- | z | 19.90 | 45.81 | 53.00 | 63.61 | 73.80 | 81.32 | 80.84 | 70.33 | ----- | z | 39.10 | 18.90 | b | 54.66 | b | |||||||||
1969 | 8.10 | 21.29 | 27.48 | 54.13 | 68.13 | a | 69.83 | 80.68 | 88.71 | 73.93 | 50.77 | 40.13 | 28.80 | a | 51.00 | |||||||||||
1970 | 10.26 | 26.39 | 28.10 | 48.77 | 59.77 | a | 75.53 | 87.13 | 79.87 | 72.83 | 59.10 | 34.83 | 20.65 | 50.27 | ||||||||||||
1971 | 11.63 | a | 19.93 | a | 35.10 | 58.27 | 65.87 | 79.67 | 80.52 | 86.71 | 72.17 | 58.48 | ----- | z | ----- | z | 56.83 | b | ||||||||
1972 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1973 | ----- | z | ----- | z | ----- | z | 54.57 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 63.58 | 35.10 | 19.55 | 43.20 | h | ||||
1974 | 13.77 | 22.36 | 30.74 | 51.77 | 61.81 | 79.40 | 89.35 | 78.77 | 68.03 | 60.87 | 39.90 | 31.71 | 52.37 | |||||||||||||
1975 | 24.17 | a | 20.04 | 29.90 | 41.43 | 68.84 | 77.60 | 87.19 | 81.35 | 69.07 | 59.48 | 42.47 | 25.42 | 52.25 | ||||||||||||
1976 | 19.97 | 34.69 | 36.55 | 58.60 | 71.55 | 83.07 | c | 87.71 | 88.81 | 76.07 | 54.52 | 36.69 | a | 21.13 | 55.78 | |||||||||||
1977 | 7.32 | 29.00 | a | 41.55 | 62.53 | 78.52 | 80.38 | a | 85.29 | 75.55 | 68.87 | 58.94 | 33.54 | b | 16.33 | a | 53.15 | |||||||||
1978 | 5.68 | 14.29 | 33.13 | 50.29 | b | 71.45 | ----- | z | 82.55 | 83.94 | 77.20 | 58.74 | 33.37 | 18.32 | 48.09 | a | ||||||||||
1979 | 3.30 | a | 8.14 | 30.21 | b | 41.90 | a | 59.45 | 76.63 | 84.42 | 78.19 | 77.40 | 56.77 | 33.27 | 31.23 | 48.41 | ||||||||||
1980 | 18.52 | 21.19 | b | 31.10 | 64.03 | a | 79.48 | ----- | z | 85.73 | a | 79.67 | a | 70.67 | 56.10 | 44.90 | 25.36 | c | 52.43 | a | ||||||
1981 | 25.03 | 30.89 | 46.38 | b | 61.00 | b | 69.55 | 75.77 | 85.48 | 83.77 | 71.90 | 54.52 | 46.30 | 19.03 | 55.80 | |||||||||||
1982 | 3.42 | 19.14 | 32.74 | 52.33 | 67.29 | 72.27 | 84.97 | a | 84.03 | 68.45 | a | 52.37 | a | 31.29 | b | 27.23 | a | 49.63 | ||||||||
1983 | 24.20 | a | 27.64 | 33.26 | 48.30 | 61.77 | 77.67 | 87.70 | a | 89.13 | 70.83 | 53.68 | 36.97 | 6.77 | a | 51.49 | ||||||||||
1984 | 20.10 | a | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 40.40 | 21.07 | a | 27.19 | i | |
1985 | 18.87 | a | 25.39 | 44.65 | 64.77 | 76.52 | 74.80 | 84.97 | 78.29 | 63.93 | 57.74 | 26.43 | 16.23 | a | 52.72 | |||||||||||
1986 | 25.19 | 20.46 | 44.97 | 52.89 | l | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 30.21 | i | |||
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 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1990 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1991 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1992 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1993 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 73.10 | 77.97 | 80.17 | b | 69.61 | b | 60.84 | 36.59 | a | 26.35 | 60.66 | e | ||||
1994 | 7.46 | c | 17.00 | a | 41.16 | 58.80 | 74.81 | 81.93 | a | 80.68 | 79.83 | a | 75.83 | 58.83 | a | 41.77 | 28.77 | 53.91 | ||||||||
1995 | 19.97 | 25.61 | 37.29 | 48.79 | a | 67.06 | 80.97 | 80.68 | 83.87 | 73.00 | b | 54.27 | a | 33.93 | b | 21.10 | 52.21 | |||||||||
1996 | 13.17 | b | 26.04 | d | 29.81 | 50.80 | 65.90 | a | 80.37 | 81.48 | 84.32 | 73.48 | c | 59.32 | 26.90 | 15.50 | a | 50.59 | ||||||||
1997 | 11.90 | b | 26.74 | a | 33.47 | a | 48.97 | a | 67.29 | c | 81.33 | 82.00 | a | 80.74 | 76.53 | 62.23 | 33.52 | a | 33.06 | 53.15 | ||||||
1998 | 19.97 | b | 34.00 | 34.00 | 62.83 | 72.63 | a | 74.07 | 84.26 | 84.77 | 80.03 | 59.52 | 38.14 | a | 31.03 | a | 56.27 | |||||||||
1999 | 16.58 | 33.12 | b | 42.35 | 57.86 | a | 69.84 | 77.83 | ----- | z | 81.23 | a | 68.59 | c | 59.35 | 52.00 | a | 38.68 | c | 54.31 | a | |||||
2000 | 24.03 | a | 34.30 | b | 48.19 | 56.03 | ----- | z | 75.45 | a | 82.81 | 83.39 | 72.79 | a | 62.59 | d | 34.62 | a | 11.77 | a | 53.27 | a | ||||
2001 | 28.58 | 16.92 | b | 36.52 | 56.38 | a | 71.23 | a | 76.66 | a | ----- | z | 84.55 | 72.70 | 57.19 | ----- | z | 28.94 | 52.97 | b | ||||||
2002 | 28.90 | 38.43 | 32.27 | a | 53.07 | a | 67.29 | 82.13 | 85.80 | a | 80.17 | a | 77.63 | 46.68 | 41.57 | 32.63 | a | 55.55 | ||||||||
2003 | 21.39 | ----- | z | 39.23 | 61.77 | 68.72 | b | 77.40 | 84.39 | 87.39 | 72.73 | 64.40 | a | 34.87 | 30.48 | 58.43 | a | |||||||||
2004 | 17.24 | b | 28.31 | 44.97 | 62.23 | 65.68 | 76.50 | b | 82.00 | a | 78.06 | 74.43 | b | 58.45 | 46.93 | 30.45 | 55.44 | |||||||||
2005 | 20.65 | 32.31 | b | 42.60 | a | 64.07 | 66.84 | 78.23 | 84.23 | 80.29 | 76.79 | a | 59.84 | 42.47 | 27.10 | b | 56.28 | |||||||||
2006 | 33.13 | 23.84 | c | 37.10 | a | 63.83 | a | 70.03 | 81.30 | 90.40 | a | 83.00 | 71.66 | a | 55.46 | c | 44.21 | b | 36.81 | 57.56 | ||||||
2007 | 23.67 | d | ----- | z | 42.29 | 54.23 | 72.65 | 79.63 | 85.90 | 79.48 | 74.72 | a | 58.84 | 36.35 | g | 18.65 | h | 63.49 | c | |||||||
2008 | 14.41 | i | 16.00 | j | 32.61 | h | 50.05 | h | 62.12 | f | 70.73 | d | 83.23 | a | 82.77 | 74.35 | g | 57.90 | a | 39.31 | a | 18.44 | m | 66.79 | g | |
2009 | 16.00 | g | 21.38 | g | 32.60 | f | 52.12 | d | 69.30 | d | 75.91 | g | 78.55 | b | 77.93 | d | 76.04 | e | 47.09 | i | 50.42 | f | 15.76 | j | 70.79 | g |
2010 | 17.88 | g | 20.26 | e | 42.61 | c | 64.36 | e | 67.36 | c | 76.43 | b | 82.78 | d | 82.04 | d | 67.17 | f | 62.30 | d | 40.91 | g | 18.91 | h | 62.27 | d |
2011 | 12.85 | d | 20.86 | g | 29.80 | f | 51.87 | g | 65.40 | f | 76.56 | e | 84.35 | 83.12 | f | 75.45 | h | 61.78 | d | 46.62 | i | 37.30 | k | 58.89 | h | |
2012 | 32.32 | i | 36.40 | i | 56.35 | h | 64.84 | k | 74.61 | h | 84.25 | f | 90.19 | e | 82.19 | d | 77.70 | 55.90 | 41.63 | 24.48 | 62.02 | f | ||||
2013 | 24.52 | 23.36 | 28.23 | 43.20 | 71.45 | 78.83 | 83.97 | 83.48 | 78.43 | 55.74 | 41.47 | 17.71 | 52.53 | |||||||||||||
2014 | 23.65 | 19.79 | 37.58 | 54.77 | 71.10 | 78.90 | 81.58 | 80.10 | 74.63 | 62.45 | 34.47 | 28.68 | 53.97 | |||||||||||||
2015 | 28.52 | 22.00 | 48.16 | 64.83 | 70.97 | 82.70 | 85.13 | 83.81 | 80.67 | 65.16 | 49.43 | 31.74 | 59.43 | |||||||||||||
2016 | 24.68 | 35.07 | 52.45 | 56.20 | 75.58 | 82.67 | 86.52 | 84.94 | 76.33 | 63.13 | 53.43 | 23.97 | 59.58 | |||||||||||||
2017 | 21.52 | 34.50 | 42.26 | 60.63 | 72.35 | 82.20 | 89.10 | 80.06 | 80.37 | 63.26 | 40.80 | 27.71 | 57.90 | |||||||||||||
2018 | 25.16 | 20.39 | 34.84 | 46.40 | 81.94 | 84.70 | 84.26 | 84.55 | 73.63 | 52.48 | 34.23 | 31.10 | 54.47 | |||||||||||||
2019 | 20.61 | 10.96 | 31.71 | 55.80 | 68.90 | 82.03 | 85.30 | a | 80.58 | 74.23 | 54.29 | 41.13 | 25.68 | 52.60 | ||||||||||||
2020 | 23.84 | 29.34 | 40.68 | 53.57 | 68.00 | 85.73 | 86.06 | 82.58 | 72.83 | 51.58 | 49.30 | 35.03 | 56.55 | |||||||||||||
2021 | 30.10 | a | 19.04 | 52.90 | 58.20 | 73.45 | 88.67 | 88.06 | 85.29 | 79.90 | 63.13 | 45.10 | 26.13 | 59.16 | ||||||||||||
2022 | 20.48 | 23.43 | 37.45 | 47.97 | 68.16 | 83.23 | 84.55 | 82.87 | 77.20 | 63.61 | 36.57 | 19.16 | 53.72 | |||||||||||||
2023 | 21.03 | 26.36 | 26.77 | 44.63 | 78.00 | 86.07 | 83.35 | 83.03 | 77.63 | 59.81 | 44.93 | 38.23 | 55.82 | |||||||||||||
2024 | 23.61 | 40.79 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 32.20 | j | ||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 18.80 | 24.34 | 37.16 | 54.34 | 69.01 | 78.32 | 84.06 | 82.42 | 73.07 | 58.88 | 39.50 | 25.20 | 53.71 | |||||||||||||
S.D. | 7.09 | 6.94 | 6.83 | 6.35 | 4.80 | 4.04 | 2.89 | 3.08 | 4.38 | 4.49 | 5.89 | 6.95 | 2.68 | |||||||||||||
SKEW | -0.49 | 0.31 | 0.28 | -0.03 | 0.41 | 0.17 | -0.07 | 0.21 | -0.85 | -0.13 | 0.04 | -0.31 | 0.39 | |||||||||||||
MAX | 33.13 | 40.79 | 52.90 | 64.83 | 81.94 | 88.67 | 90.40 | 89.13 | 80.67 | 71.16 | 53.43 | 38.68 | 59.58 | |||||||||||||
MIN | 3.30 | 8.14 | 25.90 | 41.43 | 59.45 | 69.83 | 77.97 | 75.55 | 56.70 | 46.68 | 26.43 | 6.77 | 48.41 | |||||||||||||
YRS | 57 | 56 | 57 | 58 | 57 | 58 | 60 | 61 | 59 | 61 | 57 | 57 | 43 |