YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1948 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 84.97 | a | 84.63 | a | 79.80 | 61.90 | 39.48 | a | 27.42 | 63.03 | f | |||
1949 | 16.37 | a | 17.64 | 35.45 | 61.79 | a | 70.67 | a | 80.03 | 87.03 | 89.61 | 72.97 | a | 59.13 | 49.70 | 22.45 | 55.24 | |||||||||
1950 | 3.29 | 22.50 | 32.65 | 43.93 | 62.79 | b | 81.73 | 81.60 | a | 81.55 | 74.59 | a | 60.58 | g | ----- | z | ----- | z | 53.85 | c | ||||||
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 | 84.29 | 69.87 | 63.81 | 45.27 | 30.68 | 58.78 | g | |||||
1963 | 15.81 | 28.21 | 49.94 | 58.13 | 68.19 | 80.60 | 85.30 | a | 82.71 | 75.30 | 71.26 | 47.97 | 19.87 | 56.94 | ||||||||||||
1964 | 27.94 | 35.07 | 35.87 | 58.73 | 73.10 | 77.53 | 85.90 | 80.10 | 71.53 | 63.65 | 40.07 | 15.87 | 55.45 | |||||||||||||
1965 | 13.73 | a | 24.29 | 29.00 | 52.73 | 69.55 | 78.13 | 81.97 | 81.39 | 58.80 | 63.87 | 43.90 | 33.29 | 52.55 | ||||||||||||
1966 | 8.40 | a | 23.82 | 42.97 | 49.40 | 69.06 | 79.00 | 90.20 | a | 79.87 | 72.33 | 61.65 | 36.57 | 28.32 | 53.47 | |||||||||||
1967 | 25.13 | 24.18 | 43.39 | 53.38 | a | 67.42 | 76.73 | 84.97 | a | 86.06 | 75.43 | 58.68 | 41.80 | 27.77 | a | 55.41 | ||||||||||
1968 | 21.16 | 24.34 | 51.48 | 58.93 | a | 66.39 | 77.45 | a | 83.65 | 84.50 | a | 72.57 | 60.71 | 43.48 | a | 19.06 | 55.31 | |||||||||
1969 | 9.58 | 25.25 | 34.23 | 59.43 | 73.26 | 73.13 | 84.00 | 90.61 | 76.67 | 52.71 | 44.37 | 26.90 | 54.18 | |||||||||||||
1970 | 12.03 | a | 28.54 | 31.29 | 52.43 | 71.30 | a | 83.07 | 89.86 | b | 89.48 | 77.03 | a | 60.00 | 36.70 | 25.93 | a | 54.81 | ||||||||
1971 | 12.59 | b | 26.35 | b | 41.87 | 62.17 | 68.74 | 79.80 | 81.23 | 87.23 | 73.10 | 58.16 | 38.80 | 20.58 | 54.22 | |||||||||||
1972 | 16.38 | b | 20.52 | 37.19 | 54.46 | b | ----- | z | 77.73 | 80.29 | c | 82.71 | 70.34 | a | 54.29 | 36.07 | 12.33 | g | 53.00 | b | ||||||
1973 | 22.00 | e | 31.24 | c | 43.32 | 53.73 | 69.68 | 80.90 | 86.17 | b | 85.74 | 68.30 | 61.74 | 34.92 | r | 19.48 | 56.57 | a | ||||||||
1974 | 15.81 | 24.79 | 32.74 | 51.69 | a | 60.76 | b | 76.58 | d | 89.87 | a | 78.19 | 69.90 | 61.83 | a | 40.27 | 32.77 | a | 52.93 | |||||||
1975 | 24.47 | a | 19.74 | a | 33.21 | b | 40.10 | 67.60 | a | 75.63 | 85.97 | 80.10 | 70.40 | 61.94 | 43.46 | d | 27.13 | 52.48 | ||||||||
1976 | 20.06 | 35.57 | a | 39.07 | c | 58.73 | 71.06 | 81.73 | 87.52 | 88.87 | 76.50 | 56.03 | a | 38.00 | 23.81 | 56.41 | ||||||||||
1977 | 8.06 | 31.89 | a | 42.76 | b | 63.89 | b | 77.87 | 79.70 | 85.71 | 75.74 | 69.40 | 59.06 | 35.27 | 16.90 | 53.86 | ||||||||||
1978 | 6.55 | 16.68 | c | 33.94 | 51.33 | 70.55 | 77.67 | 82.06 | 83.45 | ----- | z | 60.29 | 36.52 | a | ----- | z | 51.90 | b | ||||||||
1979 | 6.58 | 10.32 | c | 30.48 | 45.03 | a | 60.66 | b | 76.27 | ----- | z | 78.45 | 76.43 | 58.77 | a | 35.87 | 35.22 | h | 47.89 | b | ||||||
1980 | 24.63 | l | 21.57 | f | ----- | z | ----- | z | ----- | z | ----- | z | 85.55 | 79.03 | 70.07 | 57.48 | b | 44.71 | f | 27.65 | 63.96 | g | ||||
1981 | 29.81 | e | 40.62 | l | 48.48 | 61.17 | a | 68.24 | b | 75.80 | 84.45 | 85.14 | i | 73.64 | b | 55.96 | f | 50.25 | b | 25.25 | c | 57.46 | c | |||
1982 | 8.43 | j | 19.27 | f | ----- | z | 53.00 | g | 68.45 | b | 71.40 | ----- | z | 82.55 | 71.97 | a | 56.06 | 32.07 | c | 29.43 | a | 58.85 | e | |||
1983 | 27.96 | d | 32.11 | a | 36.70 | a | 50.47 | 65.26 | 76.52 | a | 86.37 | a | 87.55 | 70.93 | b | 54.50 | a | 35.53 | 7.07 | a | 52.58 | |||||
1984 | 19.83 | b | 37.57 | a | 34.32 | 55.20 | 65.75 | k | 77.57 | b | 83.64 | c | 87.23 | e | 68.12 | d | ----- | z | 40.33 | 23.29 | 52.71 | b | ||||
1985 | 17.52 | b | 23.46 | 44.32 | 63.17 | 76.29 | 73.03 | 86.71 | 76.74 | 64.37 | 56.84 | 26.76 | a | 16.42 | 52.14 | |||||||||||
1986 | 24.19 | 18.29 | 45.03 | 52.60 | 68.39 | h | 80.23 | 82.77 | 77.94 | 66.00 | 58.52 | 33.07 | a | 33.55 | 52.02 | a | ||||||||||
1987 | 29.61 | 37.00 | a | 37.16 | 65.90 | 73.06 | 83.37 | 85.10 | a | 79.13 | 74.03 | 56.06 | 44.83 | 30.55 | 57.98 | |||||||||||
1988 | 17.87 | 22.03 | 42.10 | 61.57 | 77.68 | 88.17 | 89.35 | 85.03 | 70.10 | 56.65 | 36.57 | 28.29 | 56.28 | |||||||||||||
1989 | 25.87 | 15.46 | 29.55 | 54.03 | 70.03 | 76.70 | 87.70 | a | 83.35 | 72.53 | 63.03 | 36.72 | a | 16.58 | 52.63 | |||||||||||
1990 | 33.07 | a | 29.93 | 44.00 | 58.60 | 67.55 | 77.70 | 82.07 | a | 83.74 | 76.97 | 58.32 | 44.67 | 23.00 | a | 56.63 | ||||||||||
1991 | 19.29 | 35.64 | 41.35 | 59.50 | 68.50 | a | 77.67 | 81.03 | 83.97 | 70.97 | 55.74 | 31.13 | 29.29 | 54.51 | ||||||||||||
1992 | 29.77 | 32.45 | 43.35 | 51.93 | 73.16 | 73.37 | 73.37 | a | 77.06 | 69.50 | 59.35 | 31.90 | a | 19.77 | 52.92 | |||||||||||
1993 | 16.77 | 19.00 | 36.81 | 53.97 | 68.61 | 70.57 | 73.58 | 78.06 | 65.57 | 56.87 | 34.93 | 23.35 | 49.84 | |||||||||||||
1994 | 5.39 | 13.25 | 38.52 | 55.20 | 73.48 | 78.20 | 77.29 | 78.61 | 72.97 | 58.03 | 41.77 | 26.00 | 51.56 | |||||||||||||
1995 | 18.00 | 25.32 | 33.77 | 46.87 | 63.10 | 79.73 | 80.13 | 83.58 | 72.47 | 54.23 | 31.40 | 22.00 | a | 50.88 | ||||||||||||
1996 | 10.32 | 22.45 | 27.13 | a | 47.73 | 63.42 | 78.87 | 79.13 | 83.16 | 69.37 | 56.97 | 24.87 | 12.55 | 48.00 | ||||||||||||
1997 | 10.03 | 25.64 | 31.65 | 47.80 | 65.81 | 79.87 | 80.52 | 80.55 | 75.43 | 60.00 | 32.72 | a | 31.37 | a | 51.78 | |||||||||||
1998 | 18.03 | 32.36 | 31.42 | 60.30 | 70.59 | i | 71.67 | 83.90 | a | 82.97 | 78.90 | 57.39 | 37.20 | 30.71 | 53.17 | a | ||||||||||
1999 | 14.87 | 32.93 | 43.06 | 54.27 | 68.58 | 75.27 | 83.26 | 81.32 | 66.70 | 56.00 | 51.60 | 36.19 | 55.34 | |||||||||||||
2000 | 23.43 | a | 32.62 | 47.10 | 54.10 | 70.26 | 74.20 | 81.65 | 82.87 | a | 71.93 | 59.81 | 32.57 | 12.87 | 53.62 | |||||||||||
2001 | 24.10 | 18.32 | c | 35.35 | 53.87 | 70.29 | 76.27 | 83.77 | 85.61 | 72.61 | b | 56.32 | 51.33 | 28.70 | a | 54.71 | ||||||||||
2002 | 28.21 | b | 38.54 | b | 34.43 | a | 57.20 | 65.26 | ----- | z | ----- | z | 78.58 | 75.92 | e | 40.65 | n | 40.53 | 31.07 | b | 49.97 | c | ||||
2003 | 18.57 | c | 20.54 | b | 37.85 | d | 58.83 | 66.20 | a | 75.54 | f | 81.96 | f | 87.09 | h | 72.07 | a | 62.22 | d | ----- | z | ----- | z | 48.04 | e | |
2004 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 80.71 | x | 75.00 | 59.58 | 47.66 | a | 29.73 | a | 52.99 | h | ||
2005 | 17.93 | a | 32.96 | 42.80 | a | 65.04 | b | 64.75 | c | 78.77 | 84.61 | 81.45 | 76.63 | 61.03 | a | 44.27 | 26.19 | 56.37 | ||||||||
2006 | 31.10 | 28.25 | 39.63 | a | 63.41 | a | 70.97 | 80.90 | 91.71 | 84.39 | 70.72 | a | 56.65 | 44.73 | 35.83 | a | 58.19 | |||||||||
2007 | 21.45 | 18.50 | 43.23 | 53.13 | 74.10 | 79.43 | b | 87.07 | a | 79.03 | 73.60 | 60.20 | k | 41.55 | a | 21.91 | h | 57.11 | b | |||||||
2008 | 18.77 | 20.14 | 38.61 | 54.23 | 68.06 | 76.43 | b | 84.17 | a | 84.26 | 73.10 | 58.30 | a | 42.07 | a | 17.71 | c | 52.99 | ||||||||
2009 | 15.79 | b | 21.93 | a | 30.03 | b | 50.93 | b | 68.35 | 75.04 | b | 79.23 | a | 79.29 | 75.87 | 48.46 | c | 49.57 | b | 18.76 | b | 51.10 | ||||
2010 | 15.68 | 17.52 | a | 41.52 | 64.93 | 66.16 | 77.97 | a | 85.00 | f | ----- | z | 69.00 | 64.52 | b | ----- | z | ----- | z | 52.16 | d | |||||
2011 | ----- | z | ----- | z | ----- | z | ----- | z | 61.50 | e | 73.90 | i | 85.62 | o | 81.59 | d | ----- | z | 65.19 | e | 45.10 | 34.52 | b | 57.58 | g | |
2012 | 31.26 | 34.79 | 53.31 | b | 60.38 | a | 71.61 | c | 82.80 | 89.07 | a | 84.58 | 76.83 | a | 56.32 | 39.93 | 23.74 | 58.72 | ||||||||
2013 | 22.80 | a | 21.18 | 27.60 | a | 43.48 | a | 69.60 | p | 73.93 | p | ----- | z | 81.21 | l | ----- | z | ----- | z | ----- | z | ----- | z | 28.77 | h | |
2014 | 24.76 | j | 23.36 | c | 37.26 | 54.54 | f | 68.22 | d | 76.37 | c | 80.93 | c | 80.71 | c | 71.93 | a | 61.66 | b | 32.10 | a | ----- | z | 59.17 | c | |
2015 | 26.44 | d | ----- | z | ----- | z | ----- | z | 68.83 | a | ----- | z | ----- | z | ----- | z | 77.50 | 62.33 | a | ----- | z | 28.68 | c | 52.76 | g | |
2016 | 24.44 | o | 32.04 | e | ----- | z | ----- | z | 72.52 | d | 80.08 | e | 82.66 | b | 83.07 | c | 73.62 | a | 60.60 | a | 52.41 | a | 21.32 | 62.04 | c | |
2017 | 21.14 | c | 32.70 | a | 42.12 | e | 59.74 | g | 68.68 | i | 82.07 | 88.48 | b | 78.55 | b | 73.70 | 60.65 | 38.90 | a | 27.14 | c | 54.54 | b | |||
2018 | 22.62 | b | 20.04 | 36.00 | d | 46.68 | e | 77.97 | a | 82.68 | b | 83.04 | g | 81.25 | c | 74.68 | e | 50.23 | a | 30.52 | a | 31.69 | b | 50.40 | a | |
2019 | 23.18 | i | 6.09 | e | 28.36 | c | 53.18 | b | ----- | z | 79.47 | 83.90 | b | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 50.20 | g | |
2020 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2021 | ----- | z | ----- | z | ----- | z | 52.77 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 52.77 | k | |
2022 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2023 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2024 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 19.10 | 25.38 | 38.20 | 55.05 | 69.10 | 78.11 | 84.03 | 82.45 | 72.40 | 58.99 | 39.72 | 25.07 | 54.06 | |||||||||||||
S.D. | 7.41 | 7.36 | 6.30 | 6.03 | 4.12 | 3.35 | 3.86 | 3.51 | 3.82 | 3.82 | 6.51 | 6.46 | 2.40 | |||||||||||||
SKEW | -0.14 | -0.20 | 0.26 | -0.25 | 0.10 | 0.11 | -0.54 | 0.32 | -0.82 | 0.09 | 0.02 | -0.51 | -0.19 | |||||||||||||
MAX | 33.07 | 38.54 | 53.31 | 65.90 | 77.97 | 88.17 | 91.71 | 90.61 | 79.80 | 71.26 | 52.41 | 36.19 | 58.72 | |||||||||||||
MIN | 3.29 | 6.09 | 27.13 | 40.10 | 60.66 | 70.57 | 73.37 | 75.74 | 58.80 | 48.46 | 24.87 | 7.07 | 48.00 | |||||||||||||
YRS | 52 | 53 | 53 | 52 | 50 | 52 | 50 | 54 | 57 | 54 | 53 | 51 | 35 |