YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1956 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 69.73 | a | 42.07 | a | 34.10 | 48.63 | i | |
1957 | 21.87 | 31.63 | a | 40.23 | 58.97 | 69.48 | 78.80 | 88.10 | 81.03 | 71.93 | 57.77 | 39.60 | 34.87 | 56.19 | ||||||||||||
1958 | 30.29 | 25.96 | 40.48 | 60.20 | 76.39 | 74.83 | 80.35 | 85.10 | a | 75.73 | 67.23 | a | 45.70 | 25.45 | 57.31 | |||||||||||
1959 | 20.61 | 26.75 | 46.13 | 61.70 | 73.48 | 83.77 | 86.97 | 86.65 | 74.07 | 53.19 | 33.77 | 36.61 | 56.97 | |||||||||||||
1960 | 23.97 | 25.34 | 29.52 | 57.90 | 68.74 | 78.37 | 85.45 | 83.81 | 73.47 | 63.94 | 46.00 | a | 29.06 | 55.46 | ||||||||||||
1961 | 26.45 | 36.18 | 43.65 | 50.97 | 68.81 | 82.23 | 82.06 | 83.77 | 72.40 | 64.06 | 41.47 | 23.52 | 56.30 | |||||||||||||
1962 | 20.68 | 22.21 | 33.39 | 54.50 | 73.03 | 78.70 | 80.00 | 82.52 | 70.53 | 63.77 | 47.60 | 31.13 | 54.84 | |||||||||||||
1963 | 15.23 | 26.07 | 45.23 | 61.07 | 69.03 | 83.57 | 83.81 | 81.00 | 75.83 | 72.65 | 49.10 | 20.48 | 56.92 | |||||||||||||
1964 | 32.03 | 39.17 | 37.71 | 60.03 | 75.23 | 83.07 | 88.35 | 80.16 | 72.37 | 62.84 | 45.33 | 23.32 | 58.30 | |||||||||||||
1965 | 20.84 | 23.18 | 27.71 | 51.93 | 72.23 | 80.23 | 83.16 | 79.84 | 62.13 | 64.58 | 42.90 | a | 35.23 | 53.66 | ||||||||||||
1966 | 13.26 | 26.00 | 46.97 | 51.67 | 69.16 | 81.17 | 88.35 | 79.16 | 74.03 | 62.10 | 39.63 | 26.29 | 54.82 | |||||||||||||
1967 | 26.19 | 23.32 | 41.45 | 56.33 | 65.84 | 77.80 | 81.97 | 80.48 | 73.80 | 60.29 | 42.73 | 32.19 | 55.20 | |||||||||||||
1968 | 25.45 | 26.66 | 54.35 | 62.60 | 66.94 | 80.37 | 82.29 | 81.87 | 72.27 | 62.32 | 41.60 | 26.26 | 56.91 | |||||||||||||
1969 | 17.26 | 27.04 | 31.61 | 60.07 | 73.16 | 73.07 | 84.19 | 86.68 | 75.27 | 57.03 | 42.67 | 26.97 | 54.58 | |||||||||||||
1970 | 13.77 | 28.11 | 33.45 | 56.23 | 73.13 | 83.57 | 87.23 | 82.52 | 72.93 | 59.58 | 38.93 | 26.58 | 54.67 | |||||||||||||
1971 | 16.87 | 26.54 | 37.67 | a | 61.53 | 69.81 | 83.00 | 80.71 | 82.87 | 73.86 | a | 64.55 | 41.60 | 26.61 | 55.47 | |||||||||||
1972 | 17.74 | 21.79 | 37.65 | 54.03 | 73.42 | 80.27 | 81.42 | 80.55 | 70.70 | 56.48 | 38.37 | 21.13 | 52.80 | |||||||||||||
1973 | 27.23 | 31.89 | 48.06 | 56.33 | 69.03 | 82.30 | 83.77 | 85.10 | 71.57 | 66.16 | 43.83 | 24.35 | 57.47 | |||||||||||||
1974 | 21.84 | 27.75 | 39.68 | 59.33 | 65.71 | 80.27 | 90.52 | 78.35 | 71.90 | 63.74 | 42.00 | 30.65 | 55.98 | |||||||||||||
1975 | 23.61 | 24.25 | 31.45 | 44.93 | 74.77 | 78.80 | 88.87 | 82.23 | 69.37 | 64.77 | 45.20 | 27.39 | 54.64 | |||||||||||||
1976 | 23.32 | 37.00 | 41.97 | 64.03 | 71.84 | 85.43 | 89.55 | 84.60 | a | 76.10 | 55.71 | 37.97 | 25.20 | a | 57.73 | |||||||||||
1977 | 8.90 | 33.86 | 45.29 | 66.23 | 80.65 | 82.43 | 87.13 | 78.74 | 72.27 | 58.35 | 40.30 | 22.77 | 56.41 | |||||||||||||
1978 | 14.45 | 20.04 | 39.58 | 54.50 | 73.87 | 81.83 | 82.58 | 83.97 | 79.33 | 61.45 | 40.03 | 22.87 | 54.54 | |||||||||||||
1979 | 9.87 | 17.46 | 33.94 | 50.80 | 68.58 | 81.34 | a | 84.23 | 78.19 | 74.52 | a | 58.48 | 39.73 | 34.29 | 52.62 | |||||||||||
1980 | 25.77 | 24.14 | 36.81 | 62.07 | 76.35 | 82.50 | 89.29 | 83.16 | 75.03 | 57.26 | 48.55 | a | 29.35 | 57.52 | ||||||||||||
1981 | 30.32 | 34.59 | a | 51.90 | 63.77 | 71.39 | 80.53 | 84.32 | 80.19 | 73.23 | 60.31 | e | 49.73 | 26.61 | 58.91 | |||||||||||
1982 | 11.32 | 24.82 | 37.81 | 54.47 | 71.55 | 76.73 | 86.70 | a | 81.39 | 70.23 | 60.94 | 37.76 | a | 33.16 | 53.91 | |||||||||||
1983 | 27.84 | 32.32 | 39.35 | 52.33 | 69.24 | b | 79.03 | 88.81 | 88.07 | a | 73.60 | 58.10 | 40.10 | a | 9.72 | b | 54.88 | |||||||||
1984 | 23.10 | a | 33.41 | 32.19 | 56.33 | 70.23 | a | 81.23 | 84.48 | 85.55 | 69.10 | 61.40 | a | 43.41 | a | 29.53 | a | 55.83 | ||||||||
1985 | 23.32 | 26.29 | 45.42 | 65.93 | a | 75.00 | a | 77.28 | a | 85.77 | 76.61 | 68.93 | a | 58.87 | a | 31.00 | b | 18.10 | b | 54.38 | ||||||
1986 | 26.80 | a | 25.36 | 44.63 | a | 59.57 | 72.55 | 82.53 | 84.60 | a | 79.23 | 69.93 | a | 61.57 | a | 35.50 | 33.03 | 56.27 | ||||||||
1987 | 31.34 | b | 42.81 | a | 49.23 | 68.10 | 78.10 | a | 86.53 | 87.83 | a | 79.71 | 74.97 | 57.65 | 46.52 | a | 30.52 | b | 61.11 | |||||||
1988 | 17.74 | 21.52 | 43.23 | a | 60.27 | 80.19 | 90.90 | 90.52 | 86.42 | 75.43 | b | 54.41 | b | 39.30 | 31.47 | a | 57.62 | |||||||||
1989 | 33.29 | 22.00 | b | 35.68 | 57.70 | c | 71.53 | a | 81.50 | 86.86 | b | 82.26 | 73.10 | 64.52 | 38.53 | 19.00 | 55.50 | |||||||||
1990 | 36.74 | 38.38 | b | 45.52 | 61.80 | 68.97 | 81.77 | 82.71 | 80.52 | 76.77 | 59.94 | 46.00 | 25.77 | a | 58.74 | |||||||||||
1991 | 21.23 | 36.14 | 43.87 | 60.43 | 71.58 | 84.70 | 83.52 | 80.97 | 70.07 | 61.03 | 31.10 | a | 29.07 | a | 56.14 | |||||||||||
1992 | 29.61 | 34.00 | a | 42.41 | b | 52.78 | c | 73.71 | 76.93 | 74.23 | 75.58 | 71.21 | b | 59.37 | a | 35.00 | e | 26.57 | c | 54.28 | ||||||
1993 | 21.16 | 21.15 | a | 35.23 | 52.77 | 68.20 | a | 73.43 | 77.65 | 80.68 | 65.97 | 56.71 | 37.23 | 26.71 | 51.41 | |||||||||||
1994 | 10.00 | a | 17.22 | a | 39.87 | 55.00 | 73.03 | 79.03 | 80.29 | 77.42 | 73.28 | a | 59.47 | a | 45.21 | a | 29.07 | a | 53.24 | |||||||
1995 | 23.53 | a | 27.63 | a | 39.71 | 48.21 | a | 65.69 | b | 80.60 | 83.32 | 82.71 | 70.30 | 55.52 | 32.18 | b | 25.30 | a | 52.89 | |||||||
1996 | 17.11 | c | 23.36 | a | 32.70 | a | 49.83 | 63.16 | 79.14 | b | 80.00 | 80.35 | 70.62 | a | 59.23 | 31.03 | a | 19.38 | b | 50.49 | ||||||
1997 | 17.07 | c | 27.04 | a | 35.58 | 53.10 | a | 63.68 | 80.97 | 79.47 | a | 78.84 | 73.20 | 60.16 | 33.73 | 32.26 | 52.92 | |||||||||
1998 | 23.57 | a | 35.79 | 34.71 | 58.50 | 77.77 | a | 75.50 | 82.16 | 82.32 | 78.33 | 60.73 | a | 43.76 | a | 34.13 | 57.27 | |||||||||
1999 | 19.81 | d | 34.64 | 41.10 | 56.80 | 68.37 | a | 76.24 | a | 85.71 | 78.83 | b | 72.27 | 59.23 | 53.11 | b | 35.30 | a | 56.78 | |||||||
2000 | 22.86 | b | 33.52 | 50.03 | 55.62 | a | 71.32 | 76.50 | 81.19 | 80.37 | a | 73.86 | b | 62.13 | a | 37.43 | 14.21 | b | 54.92 | |||||||
2001 | 25.89 | c | 18.15 | a | 32.94 | 56.87 | 70.19 | 78.80 | 85.00 | 83.13 | 69.90 | 57.60 | a | 56.38 | a | 34.57 | a | 55.78 | ||||||||
2002 | ----- | z | 36.19 | b | 32.73 | a | 55.36 | b | 65.10 | 80.80 | 86.48 | 80.26 | 74.37 | 49.58 | 40.61 | b | 34.03 | b | 57.77 | a | ||||||
2003 | 23.00 | b | 23.56 | a | 38.68 | 57.23 | 66.26 | 77.60 | 82.06 | 84.68 | 72.72 | a | 61.68 | 40.00 | c | ----- | z | 57.04 | a | |||||||
2004 | ----- | z | 25.97 | 43.52 | ----- | z | 67.07 | a | 74.50 | 79.87 | 74.23 | 78.17 | 59.52 | 43.53 | 31.14 | b | 57.75 | b | ||||||||
2005 | 20.83 | b | 32.82 | 38.57 | a | 61.10 | 63.42 | 83.10 | 84.97 | 80.42 | 76.40 | 61.40 | a | 45.52 | a | 23.40 | a | 55.99 | ||||||||
2006 | 32.10 | 26.75 | 37.90 | 61.10 | 70.61 | 79.37 | 87.26 | 80.42 | 66.67 | 55.48 | 44.47 | 34.19 | 56.36 | |||||||||||||
2007 | 24.65 | 17.75 | 42.45 | 54.03 | 74.77 | a | 80.00 | 83.10 | 77.55 | 73.10 | 59.90 | 40.93 | 21.94 | 54.18 | ||||||||||||
2008 | 18.37 | a | 20.10 | i | 34.62 | b | 49.87 | 66.23 | 77.10 | 83.97 | 80.55 | 72.37 | 57.32 | 40.13 | 20.60 | a | 54.65 | a | ||||||||
2009 | 15.10 | 26.79 | 36.61 | 55.00 | 70.42 | 76.00 | 77.87 | 77.32 | 74.43 | 48.00 | 48.23 | 21.42 | 52.27 | |||||||||||||
2010 | 14.42 | 20.00 | 42.84 | 64.47 | 70.00 | 77.90 | 85.29 | 85.23 | 68.40 | 61.74 | 40.37 | 18.81 | 54.12 | |||||||||||||
2011 | 15.58 | 21.93 | 32.86 | b | 51.53 | 65.35 | 77.30 | 88.10 | 81.26 | 71.03 | 62.13 | 44.43 | 31.65 | 53.60 | ||||||||||||
2012 | 29.29 | 32.45 | 53.61 | 58.57 | 73.90 | 81.90 | 89.90 | 81.19 | 73.93 | 54.48 | 42.90 | 26.97 | 58.26 | |||||||||||||
2013 | 22.61 | 22.71 | 29.87 | 44.93 | 65.65 | 76.57 | 84.23 | 82.35 | 76.07 | 55.84 | 39.10 | 18.23 | 51.51 | |||||||||||||
2014 | 17.10 | 15.11 | 30.97 | 50.73 | 66.45 | 78.67 | 80.55 | 81.16 | 71.73 | 58.06 | 31.90 | 28.74 | 50.93 | |||||||||||||
2015 | 24.10 | 18.50 | 42.65 | 57.20 | 64.97 | 78.27 | 80.28 | f | 78.81 | 75.73 | 59.60 | a | 44.13 | 30.17 | a | 52.19 | a | |||||||||
2016 | 23.29 | 30.76 | 46.94 | 57.20 | 70.00 | 80.30 | 82.10 | 80.71 | 73.27 | 59.08 | e | 51.00 | 24.23 | 56.57 | ||||||||||||
2017 | 24.10 | 38.64 | 40.10 | 57.27 | 66.23 | 80.63 | 84.26 | 77.16 | 76.10 | 59.90 | 43.23 | 26.94 | 56.21 | |||||||||||||
2018 | 22.23 | 22.18 | 37.29 | 43.03 | 77.23 | 79.37 | 83.63 | d | 80.32 | 75.08 | e | 53.23 | e | 33.20 | 29.19 | 53.00 | ||||||||||
2019 | 19.16 | 15.43 | 33.55 | 53.30 | 62.16 | 77.93 | 81.90 | 77.87 | 73.93 | 53.00 | 35.53 | 27.06 | 50.90 | |||||||||||||
2020 | 24.55 | 27.24 | 42.13 | 53.53 | 67.26 | 83.50 | 84.39 | 81.65 | 69.80 | 50.71 | 46.77 | 32.00 | 55.29 | |||||||||||||
2021 | 26.84 | 15.96 | 46.65 | 55.13 | 69.81 | 86.10 | 83.13 | 82.45 | 76.43 | 64.00 | 43.70 | 30.71 | 56.74 | |||||||||||||
2022 | 18.00 | 23.26 | a | 38.26 | 46.17 | 69.23 | 81.52 | a | 83.97 | 79.13 | 74.70 | 60.06 | 42.60 | 20.77 | 53.14 | |||||||||||
2023 | 22.87 | 25.39 | 32.39 | 51.28 | a | 73.03 | 83.93 | 83.42 | 82.61 | 76.90 | 59.29 | 45.90 | 38.87 | 56.32 | ||||||||||||
2024 | 22.00 | a | 39.28 | 45.61 | 56.43 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 40.83 | h | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 21.99 | 27.18 | 39.67 | 56.31 | 70.44 | 80.15 | 84.18 | 81.21 | 72.94 | 59.72 | 41.60 | 27.33 | 55.26 | |||||||||||||
S.D. | 5.94 | 6.65 | 6.07 | 5.25 | 4.15 | 3.25 | 3.34 | 2.77 | 3.01 | 4.31 | 5.30 | 5.73 | 2.15 | |||||||||||||
SKEW | -0.03 | 0.28 | 0.27 | -0.21 | 0.28 | 0.35 | -0.21 | 0.15 | -0.73 | -0.02 | 0.03 | -0.49 | -0.11 | |||||||||||||
MAX | 36.74 | 42.81 | 54.35 | 68.10 | 80.65 | 90.90 | 90.52 | 88.07 | 79.33 | 72.65 | 56.38 | 38.87 | 61.11 | |||||||||||||
MIN | 8.90 | 15.11 | 27.71 | 43.03 | 62.16 | 73.07 | 74.23 | 74.23 | 62.13 | 48.00 | 31.00 | 9.72 | 50.49 | |||||||||||||
YRS | 66 | 67 | 68 | 67 | 67 | 67 | 66 | 67 | 67 | 68 | 68 | 67 | 62 |