YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1959 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 89.09 | t | 85.50 | a | 72.27 | 48.83 | a | 29.62 | a | 33.87 | 54.02 | g | ||
1960 | 19.19 | 23.39 | a | 27.35 | 53.47 | 69.68 | 75.63 | 83.61 | 82.94 | 71.60 | 59.90 | a | 39.77 | 22.68 | 52.43 | |||||||||||
1961 | 19.68 | 29.00 | f | 44.23 | 47.97 | 65.90 | 82.00 | a | 81.70 | a | 86.77 | 68.47 | 60.10 | 39.33 | 19.61 | 55.98 | a | |||||||||
1962 | 13.97 | 17.89 | 31.23 | 51.17 | 66.00 | 75.67 | 78.45 | 82.55 | 67.97 | 61.30 | a | 43.53 | 26.90 | 51.39 | ||||||||||||
1963 | 12.20 | a | 22.14 | 43.74 | 57.67 | 66.06 | 79.00 | e | 83.81 | 81.23 | 74.40 | 70.32 | 45.20 | 16.42 | 54.35 | |||||||||||
1964 | 27.06 | 31.41 | 31.97 | 56.83 | 73.39 | 79.23 | 85.32 | 78.06 | 68.97 | 59.48 | 38.86 | a | 15.76 | b | 53.86 | |||||||||||
1965 | 10.77 | a | 18.57 | 25.97 | 51.07 | 66.39 | h | 76.37 | 79.90 | 80.77 | 58.55 | a | 61.03 | 39.10 | a | 29.67 | a | 48.34 | a | |||||||
1966 | 13.14 | x | 20.37 | i | 39.88 | f | 47.17 | a | 66.81 | 78.83 | 85.87 | 77.39 | 73.40 | 58.87 | 33.77 | 24.54 | g | 65.26 | d | |||||||
1967 | 21.45 | 20.04 | 38.03 | 53.07 | 64.16 | 75.59 | a | 82.10 | 82.13 | 74.77 | 57.45 | 38.07 | 26.57 | a | 52.78 | |||||||||||
1968 | 18.74 | 21.10 | 49.93 | a | 58.73 | 64.67 | a | 77.03 | a | 83.32 | 83.19 | 71.40 | 58.50 | a | 38.50 | 19.31 | b | 53.70 | ||||||||
1969 | 11.06 | 22.96 | 29.84 | 56.50 | 71.58 | 70.43 | 82.10 | a | 87.68 | 74.43 | 52.23 | 40.93 | 25.65 | 52.12 | ||||||||||||
1970 | 11.00 | 26.50 | 30.35 | 51.67 | 67.48 | 82.20 | 87.74 | 85.84 | 75.23 | 57.74 | 35.07 | 21.32 | 52.68 | |||||||||||||
1971 | 11.00 | 22.32 | 34.06 | 58.37 | 68.45 | 80.47 | 79.73 | a | 83.58 | 72.93 | 59.13 | 36.77 | 23.68 | 52.54 | ||||||||||||
1972 | 12.13 | 16.10 | 34.03 | 51.33 | 71.42 | 79.40 | 80.39 | 81.97 | 71.07 | a | 56.61 | 34.40 | 14.23 | 50.26 | ||||||||||||
1973 | 23.10 | 27.46 | 46.16 | 56.93 | 69.81 | 80.70 | 83.00 | a | 85.00 | 68.87 | 64.67 | a | 35.90 | 21.48 | 55.26 | |||||||||||
1974 | 15.27 | a | 24.89 | 32.68 | 54.50 | 63.29 | 79.67 | 87.13 | 79.68 | 70.27 | 63.13 | 39.67 | 29.87 | 53.34 | ||||||||||||
1975 | 21.39 | 20.82 | 29.29 | 43.67 | 72.03 | 78.60 | 86.42 | 81.52 | 69.30 | 62.06 | 42.07 | 24.71 | 52.66 | |||||||||||||
1976 | 18.77 | a | 32.93 | 38.00 | 63.77 | 73.13 | a | 84.20 | 88.74 | 89.26 | 77.63 | 56.43 | a | 34.70 | 19.10 | 56.39 | ||||||||||
1977 | 5.35 | 27.11 | 38.94 | o | 64.90 | 79.71 | 79.40 | 85.26 | 75.74 | 68.73 | 58.94 | 32.52 | a | 16.35 | 54.00 | a | ||||||||||
1978 | 6.90 | 14.96 | 33.10 | a | 52.60 | 72.52 | 78.60 | 81.94 | 84.03 | 77.43 | 61.55 | 35.13 | 19.97 | 51.56 | ||||||||||||
1979 | 4.61 | 10.04 | 31.32 | 45.50 | 62.68 | 79.57 | 82.23 | 78.29 | 77.80 | 55.80 | a | 34.27 | 31.97 | 49.51 | ||||||||||||
1980 | 17.90 | 21.32 | a | 31.03 | 64.33 | 77.74 | 79.80 | 85.87 | 79.71 | 71.10 | 54.74 | 43.57 | 23.00 | 54.18 | ||||||||||||
1981 | 24.29 | 30.89 | 48.13 | 61.43 | 70.61 | 75.33 | 83.42 | 81.77 | 71.77 | 54.65 | 46.10 | 19.81 | 55.68 | |||||||||||||
1982 | 5.86 | b | 20.78 | a | 33.47 | a | 53.24 | a | 71.07 | a | 75.47 | 84.47 | a | 82.60 | a | 71.17 | a | 56.21 | b | 34.00 | a | 29.77 | a | 51.51 | ||
1983 | 25.65 | 31.36 | 37.97 | a | 53.11 | b | 68.37 | a | 77.93 | b | 86.83 | a | 88.52 | 72.40 | 56.35 | 37.14 | a | 7.97 | a | 53.63 | ||||||
1984 | 17.55 | 33.43 | a | ----- | z | 59.04 | c | 70.00 | 77.61 | b | 84.71 | 86.07 | a | 66.72 | a | 56.74 | 41.12 | d | 19.81 | 55.71 | a | |||||
1985 | 16.33 | a | 21.00 | b | 41.97 | 60.78 | c | 72.03 | a | 71.29 | b | 82.10 | a | 74.70 | a | 63.24 | a | ----- | z | 25.48 | a | 11.14 | c | 49.10 | a | |
1986 | 21.76 | b | 19.20 | c | 40.58 | 54.27 | 70.31 | b | 78.69 | a | 81.48 | b | 75.48 | 63.52 | c | 56.00 | a | 31.41 | a | 31.41 | d | 52.01 | ||||
1987 | 25.83 | a | 35.23 | b | 41.07 | b | 67.04 | d | 74.03 | b | 80.43 | 84.24 | b | 76.75 | c | 71.62 | a | 51.70 | a | 41.48 | e | ----- | z | 59.04 | a | |
1988 | 14.04 | d | 18.66 | ----- | z | 59.61 | b | 77.24 | b | 86.21 | b | 87.97 | b | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 57.29 | f | |
1989 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 62.50 | y | 33.83 | a | 14.52 | 24.17 | j | |
1990 | 32.10 | 29.46 | 41.48 | 56.30 | 66.39 | 76.97 | 79.94 | 80.97 | 73.67 | 58.00 | a | 43.72 | a | 22.13 | 55.09 | |||||||||||
1991 | 16.61 | 31.14 | 39.74 | 58.31 | a | 70.77 | 78.97 | 79.35 | 81.81 | 67.10 | 53.94 | 28.77 | 25.94 | 52.70 | ||||||||||||
1992 | 26.06 | 31.38 | 40.97 | 51.47 | 72.83 | a | 72.30 | 72.97 | 74.29 | 69.28 | a | 56.52 | 29.70 | 19.52 | 51.44 | |||||||||||
1993 | 15.53 | a | 16.96 | 33.16 | 53.37 | 66.97 | 70.76 | a | 74.90 | 76.87 | 66.03 | 56.26 | 32.77 | 23.26 | 48.90 | |||||||||||
1994 | 3.03 | 14.43 | 36.61 | 56.07 | 71.40 | a | 77.43 | 76.16 | 76.32 | 73.30 | 58.32 | 41.70 | 27.26 | 51.00 | ||||||||||||
1995 | 18.16 | 22.46 | 36.29 | 48.37 | 66.26 | 80.63 | 79.10 | 81.71 | 69.83 | 50.97 | 29.60 | 19.87 | 50.27 | |||||||||||||
1996 | 9.42 | 20.66 | 26.17 | a | 48.40 | 64.19 | 79.43 | 79.16 | 81.65 | 68.80 | 56.87 | 25.43 | 12.93 | a | 47.76 | |||||||||||
1997 | 10.00 | 21.96 | 30.23 | 48.73 | 65.65 | 80.00 | 77.94 | 77.71 | 72.70 | 58.58 | 29.67 | 29.61 | 50.23 | |||||||||||||
1998 | 18.74 | 33.61 | 33.26 | 60.93 | 72.74 | 72.47 | 80.74 | 81.97 | a | 77.17 | 56.83 | a | 37.37 | 28.45 | 54.52 | |||||||||||
1999 | 15.26 | 31.14 | 41.16 | 55.93 | 67.94 | 75.20 | 82.29 | 79.23 | 65.93 | 55.35 | 49.33 | 31.74 | 54.21 | |||||||||||||
2000 | 20.13 | 31.14 | 44.76 | b | 53.07 | a | 67.90 | ----- | z | 78.93 | b | 78.08 | e | 69.67 | 58.61 | c | 34.20 | e | 10.54 | g | 53.65 | b | ||||
2001 | 26.36 | f | 16.04 | e | 30.13 | 53.00 | c | 68.33 | a | 75.17 | 81.65 | 82.37 | a | 68.62 | a | 53.61 | 52.42 | d | 29.11 | d | 55.50 | a | ||||
2002 | 26.62 | e | 35.70 | e | 29.63 | d | 49.48 | c | 63.00 | b | 78.53 | 83.48 | d | 77.32 | 73.00 | 43.11 | d | 38.59 | c | 29.35 | e | 52.32 | ||||
2003 | 17.00 | c | 20.55 | f | 39.61 | c | 57.54 | b | 66.96 | c | 75.21 | b | 80.03 | 83.43 | a | 69.21 | b | ----- | z | 33.52 | c | 27.42 | e | 54.99 | b | |
2004 | 15.24 | f | 25.00 | e | 41.42 | e | 56.90 | 62.82 | c | 71.86 | a | 78.68 | c | 72.74 | d | 72.10 | a | 55.70 | a | 41.23 | 25.70 | a | 54.92 | a | ||
2005 | 16.16 | 28.61 | e | 37.25 | c | 59.83 | a | 62.69 | b | 76.33 | c | 81.70 | a | 76.27 | a | 72.97 | 57.23 | a | 41.46 | d | 24.32 | f | 55.50 | a | ||
2006 | 31.29 | 21.25 | d | 35.52 | b | 60.75 | b | 67.68 | 76.70 | 86.50 | a | 79.55 | 67.50 | b | 53.22 | d | 42.07 | c | 32.57 | a | 54.55 | |||||
2007 | 22.96 | e | 17.00 | e | 41.31 | e | 50.47 | 69.90 | a | 77.93 | a | 82.10 | 76.43 | c | 71.30 | 58.37 | a | 40.24 | e | 18.74 | d | 52.23 | ||||
2008 | 16.40 | f | 17.80 | d | 31.56 | d | 50.71 | b | 64.63 | a | 72.52 | c | 79.57 | a | 79.93 | a | ----- | z | 55.28 | b | 38.79 | f | 19.04 | g | 56.50 | d |
2009 | 12.46 | e | 20.75 | h | 34.28 | f | 49.07 | a | 66.52 | b | 71.90 | 74.97 | 75.16 | 73.27 | 45.45 | b | 46.38 | a | 17.77 | i | 57.24 | c | ||||
2010 | 16.62 | g | 19.48 | c | 43.20 | a | 62.90 | 66.53 | a | 71.40 | o | 79.93 | a | 79.83 | b | 64.03 | a | 59.80 | a | 39.73 | d | 19.17 | g | 57.27 | c | |
2011 | 12.04 | g | 22.12 | c | 30.48 | d | 49.79 | a | 64.24 | b | 74.69 | a | 83.84 | 79.45 | 70.17 | 61.39 | 42.75 | b | 33.81 | d | 55.70 | a | ||||
2012 | 32.35 | h | 30.50 | c | 53.89 | d | 57.00 | b | 70.68 | c | 79.18 | b | 85.13 | 79.06 | 72.80 | 52.71 | 38.20 | 24.06 | 58.47 | a | ||||||
2013 | 21.74 | 19.88 | c | 26.77 | 40.10 | 65.65 | 74.77 | 80.48 | 80.77 | 73.70 | 51.77 | 36.87 | 14.55 | 48.92 | ||||||||||||
2014 | 15.71 | 12.11 | 31.29 | 48.93 | 65.47 | a | 74.23 | 77.26 | 79.44 | m | 69.12 | d | 57.29 | 29.38 | a | 27.97 | 46.25 | a | ||||||||
2015 | 22.94 | 17.04 | 42.52 | 58.33 | 64.97 | 76.13 | 81.10 | 77.81 | 76.27 | 59.03 | 45.30 | 29.84 | 54.27 | |||||||||||||
2016 | 20.84 | 28.97 | 47.00 | 52.63 | 70.71 | 77.20 | 79.94 | 78.81 | 70.13 | 57.00 | a | 48.23 | 22.97 | 54.54 | ||||||||||||
2017 | 20.77 | 33.07 | ----- | z | 54.97 | 66.03 | 77.23 | 80.81 | 74.61 | ----- | z | 57.00 | 37.33 | 21.52 | 52.33 | b | ||||||||||
2018 | 19.94 | 17.54 | 34.52 | 44.87 | 76.00 | 78.70 | 80.57 | a | 77.80 | a | ----- | z | 48.71 | 30.40 | ----- | z | 50.90 | b | ||||||||
2019 | 15.23 | 13.04 | ----- | z | ----- | z | 62.13 | a | 77.03 | 80.16 | 74.58 | 69.73 | 49.00 | 33.93 | 24.48 | 49.93 | b | |||||||||
2020 | 21.29 | 24.29 | a | 39.32 | 50.00 | 63.10 | a | 80.43 | 81.81 | 79.77 | 68.43 | 47.13 | 43.97 | a | 30.29 | 52.49 | ||||||||||
2021 | 26.03 | 12.43 | 46.87 | 52.17 | 69.77 | 83.93 | 84.48 | 82.23 | 75.63 | 60.19 | 41.38 | a | 26.29 | 55.12 | ||||||||||||
2022 | ----- | z | 16.93 | 33.74 | 43.30 | ----- | z | 79.83 | 81.19 | 78.39 | 73.00 | 59.26 | 35.77 | 20.06 | 52.15 | b | ||||||||||
2023 | 20.29 | 24.04 | 26.94 | ----- | z | ----- | z | ----- | z | 79.57 | a | 80.23 | 75.10 | 55.55 | 41.90 | 36.29 | 48.88 | c | ||||||||
2024 | 20.94 | 37.52 | 41.03 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 33.16 | i | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 17.68 | 23.45 | 36.72 | 54.15 | 68.52 | 77.48 | 81.85 | 80.26 | 70.94 | 56.53 | 37.85 | 23.79 | 52.63 | |||||||||||||
S.D. | 6.52 | 6.77 | 6.61 | 5.68 | 4.04 | 3.31 | 3.28 | 3.71 | 3.75 | 4.57 | 5.76 | 6.28 | 2.02 | |||||||||||||
SKEW | -0.17 | 0.20 | 0.37 | -0.03 | 0.57 | -0.05 | -0.16 | 0.30 | -0.59 | -0.39 | 0.03 | -0.27 | -0.41 | |||||||||||||
MAX | 32.10 | 37.52 | 53.89 | 67.04 | 79.71 | 86.21 | 88.74 | 89.26 | 77.80 | 70.32 | 52.42 | 36.29 | 56.39 | |||||||||||||
MIN | 3.03 | 10.04 | 25.97 | 40.10 | 62.13 | 70.43 | 72.97 | 72.74 | 58.55 | 43.11 | 25.43 | 7.97 | 47.76 | |||||||||||||
YRS | 56 | 60 | 57 | 61 | 60 | 60 | 63 | 62 | 60 | 61 | 63 | 56 | 39 |