YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1956 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 70.53 | 67.45 | 38.43 | 30.29 | 51.68 | h | ||||
1957 | 14.83 | b | 25.32 | 37.03 | 53.30 | 62.94 | 71.97 | 83.58 | 77.81 | 66.43 | 53.32 | 38.23 | 32.58 | 51.45 | ||||||||||||
1958 | 28.45 | 22.64 | 33.84 | 54.10 | 71.97 | 70.77 | 76.58 | 84.45 | 74.00 | 62.94 | 41.10 | 21.81 | 53.55 | |||||||||||||
1959 | 14.57 | a | 19.43 | 41.48 | 57.60 | 67.74 | 80.37 | 84.10 | 85.81 | 72.30 | 50.77 | 29.20 | 32.97 | 53.03 | ||||||||||||
1960 | 16.44 | m | 19.31 | 23.19 | 50.67 | 67.35 | 72.20 | 83.55 | 82.03 | 73.30 | 60.00 | 42.63 | 22.84 | 54.28 | a | |||||||||||
1961 | 20.50 | a | 28.61 | 42.32 | 49.30 | 63.00 | 80.20 | 79.55 | 84.71 | 66.43 | 59.03 | 39.40 | 20.23 | 52.77 | ||||||||||||
1962 | 15.74 | 17.00 | 30.03 | 51.67 | 64.90 | 72.13 | 75.55 | 80.16 | 66.97 | 60.74 | 42.57 | 28.74 | 50.52 | |||||||||||||
1963 | 11.61 | 25.36 | 44.16 | 56.23 | 65.26 | 78.59 | a | 79.48 | 78.52 | 71.17 | 66.42 | 44.27 | 17.52 | 53.21 | ||||||||||||
1964 | 27.16 | 31.07 | 31.23 | 54.80 | 70.77 | 78.21 | a | 84.74 | 77.71 | 67.80 | 59.97 | 38.90 | 16.23 | 53.22 | ||||||||||||
1965 | 14.29 | 21.64 | 24.65 | 49.70 | 67.19 | 74.00 | 79.19 | 78.84 | 56.13 | 61.87 | 40.33 | 31.03 | 49.91 | |||||||||||||
1966 | 9.35 | 19.64 | 42.71 | 46.23 | 64.48 | 75.93 | 86.10 | 76.00 | 68.53 | 58.00 | 35.38 | a | 25.13 | 50.62 | ||||||||||||
1967 | 23.90 | 18.82 | 39.94 | 53.53 | 62.52 | 72.73 | 80.84 | 79.90 | 72.87 | 57.61 | 38.90 | 26.39 | 52.33 | |||||||||||||
1968 | 20.55 | 22.31 | 51.00 | 55.83 | 63.26 | 76.93 | 80.32 | 81.16 | 70.00 | 56.84 | 37.13 | 17.65 | 52.75 | |||||||||||||
1969 | 10.23 | 22.36 | 26.32 | 55.00 | 68.58 | 69.40 | 78.61 | 83.97 | 74.13 | 49.35 | 40.40 | 25.06 | 50.28 | |||||||||||||
1970 | 11.32 | 26.11 | a | 30.52 | 50.03 | 68.68 | 78.47 | 84.58 | 82.68 | 73.43 | 56.16 | 32.40 | 22.32 | 51.39 | ||||||||||||
1971 | 11.35 | 21.89 | 38.10 | 58.73 | 66.94 | 77.83 | 77.77 | 83.81 | 70.60 | 57.48 | 37.70 | 21.32 | 51.96 | |||||||||||||
1972 | 14.55 | 17.24 | 32.65 | 48.63 | 66.97 | 76.07 | 78.29 | 79.68 | 70.37 | 54.29 | 33.17 | 15.97 | 48.99 | |||||||||||||
1973 | 22.48 | 28.43 | 43.16 | 53.23 | 67.35 | 77.93 | 82.81 | 84.55 | 68.00 | 63.84 | 36.43 | 20.35 | 54.05 | |||||||||||||
1974 | 16.93 | a | 24.82 | 35.65 | 55.10 | 62.68 | 77.33 | 87.61 | 78.87 | 71.30 | 63.61 | 40.00 | 29.42 | 53.61 | ||||||||||||
1975 | 22.94 | 19.18 | 30.39 | 40.03 | 68.84 | 75.77 | 87.45 | 80.81 | 69.77 | 61.68 | 41.03 | 24.58 | 51.87 | |||||||||||||
1976 | 18.81 | 32.38 | 38.90 | 60.93 | 69.19 | 82.97 | 89.00 | 87.29 | 75.47 | 54.71 | 35.37 | 22.42 | 55.62 | |||||||||||||
1977 | 8.61 | 29.43 | 40.74 | 62.73 | 75.45 | 77.80 | 84.19 | 74.90 | 69.00 | 57.65 | 33.83 | 16.42 | 52.56 | |||||||||||||
1978 | 6.48 | 13.54 | 32.74 | 50.27 | 68.35 | 76.70 | 79.73 | a | 82.58 | 76.27 | 60.03 | 35.03 | 19.55 | 50.11 | ||||||||||||
1979 | 6.45 | 12.68 | 31.00 | a | 45.07 | a | 62.16 | 75.77 | 79.87 | 76.42 | 75.97 | 56.90 | 36.70 | 36.84 | 49.65 | |||||||||||
1980 | 22.47 | a | 22.14 | 33.03 | 61.63 | 73.32 | 76.83 | 82.03 | 78.00 | 71.93 | 55.87 | ----- | z | 26.68 | 54.90 | a | ||||||||||
1981 | 28.42 | 31.57 | 47.35 | 62.80 | 67.47 | a | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 47.52 | g | ||||
1982 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 83.41 | b | 81.79 | b | 69.41 | a | 55.58 | e | 37.09 | g | 31.28 | b | 64.29 | g |
1983 | 28.65 | 31.96 | a | 35.53 | a | 49.21 | b | 65.57 | c | 76.23 | 85.57 | a | 88.94 | 71.36 | b | 55.37 | a | 34.60 | 6.33 | a | 52.44 | |||||
1984 | 20.76 | b | 33.54 | a | 30.74 | 53.27 | 66.94 | 76.31 | a | 83.18 | c | 84.48 | 68.47 | 57.60 | a | 43.72 | a | 24.00 | c | 53.58 | ||||||
1985 | 18.38 | b | 23.81 | a | 42.32 | 65.96 | b | 74.13 | 75.13 | 84.67 | a | 75.52 | 64.70 | 56.90 | 25.04 | c | 14.83 | a | 51.78 | |||||||
1986 | 24.81 | 20.86 | 39.35 | 53.89 | b | 68.16 | 78.13 | 83.17 | a | 76.83 | b | 66.38 | a | 58.74 | 38.07 | 35.29 | 53.64 | |||||||||
1987 | 30.14 | b | 39.39 | 39.47 | a | 65.67 | 73.00 | 82.27 | 85.19 | 79.10 | a | 72.77 | 53.28 | b | 42.63 | 28.60 | a | 57.63 | ||||||||
1988 | 16.97 | a | 20.97 | 39.84 | 60.43 | 75.43 | a | 87.62 | a | 89.53 | a | 83.37 | a | 71.43 | 55.42 | 36.70 | 26.90 | 55.38 | ||||||||
1989 | 27.34 | b | 13.59 | a | 30.84 | 52.83 | 68.57 | a | 75.66 | a | 85.29 | 80.52 | 71.70 | 59.63 | a | 35.37 | 16.06 | 51.45 | ||||||||
1990 | 34.48 | 30.07 | 43.61 | 57.13 | 65.60 | a | 76.86 | a | 79.58 | 80.07 | b | 76.74 | c | 58.90 | a | 44.57 | 22.23 | 55.82 | ||||||||
1991 | 19.55 | 35.26 | a | 41.94 | 59.03 | 69.53 | a | 78.27 | 79.07 | a | 79.65 | 68.30 | 57.50 | a | 31.79 | a | 31.10 | 54.25 | ||||||||
1992 | 29.77 | 34.12 | c | 44.13 | 51.83 | a | 71.71 | 72.67 | 71.40 | a | 74.65 | 69.93 | 57.47 | a | 28.97 | a | 20.10 | a | 52.23 | |||||||
1993 | 17.07 | a | 18.08 | b | 32.39 | 49.59 | a | 66.00 | 70.47 | 75.04 | c | 77.58 | 66.07 | 57.48 | 33.43 | b | 25.14 | b | 49.03 | |||||||
1994 | 5.23 | 16.40 | c | 37.87 | 56.07 | a | 71.81 | 76.67 | 77.23 | a | 76.42 | 73.14 | a | 58.39 | 41.79 | a | 28.83 | a | 51.65 | |||||||
1995 | 20.70 | a | 25.77 | b | 37.57 | c | 45.07 | 63.47 | a | 77.37 | 80.80 | a | 82.16 | 69.80 | 51.84 | 31.73 | 23.07 | c | 50.78 | |||||||
1996 | 12.71 | 22.24 | 27.77 | 49.73 | 61.74 | 77.17 | 77.90 | a | 80.00 | a | 68.03 | 59.48 | 25.97 | a | 13.07 | a | 47.98 | |||||||||
1997 | 12.43 | a | 23.52 | a | 31.63 | a | 45.93 | 65.48 | b | 78.73 | 78.77 | 76.50 | a | 73.46 | b | 61.29 | 31.07 | 28.39 | 50.60 | |||||||
1998 | 20.14 | c | 33.18 | 30.47 | a | 57.62 | a | 72.00 | 71.63 | 81.96 | c | 80.57 | c | 78.59 | a | 57.63 | a | 37.93 | 31.39 | 54.43 | ||||||
1999 | 16.81 | 35.07 | a | 42.97 | 56.63 | 67.03 | 75.34 | a | 82.93 | c | 80.33 | a | 67.75 | b | 59.07 | a | 51.97 | 33.86 | b | 55.81 | ||||||
2000 | 23.33 | a | 35.30 | b | 49.83 | a | 55.00 | 69.40 | a | 73.89 | c | 80.76 | b | 82.61 | 74.86 | b | 60.74 | 31.33 | c | 10.83 | b | 53.99 | ||||
2001 | 24.38 | b | 14.68 | 29.90 | a | 53.43 | 67.87 | a | 75.53 | 83.52 | 84.20 | a | 71.57 | 58.07 | a | 51.66 | a | 28.58 | 53.61 | |||||||
2002 | 28.68 | c | 38.08 | b | 27.90 | 53.40 | 64.83 | a | 79.13 | 84.94 | 79.07 | a | 74.70 | 46.66 | b | 41.39 | b | 29.97 | a | 54.06 | ||||||
2003 | 19.07 | a | 21.29 | 39.31 | b | 58.53 | 65.29 | 73.53 | 81.81 | 83.86 | b | 72.27 | 62.93 | a | 34.13 | 28.71 | 53.39 | |||||||||
2004 | 19.10 | b | 25.76 | 44.37 | a | 60.93 | 65.87 | 71.90 | 77.33 | a | 74.65 | 74.47 | 56.81 | 44.43 | 30.60 | a | 53.85 | |||||||||
2005 | 19.90 | 33.07 | 42.74 | 60.50 | 63.94 | 77.14 | b | 82.77 | 79.26 | 76.13 | 58.65 | 42.30 | 22.32 | 54.89 | ||||||||||||
2006 | 30.29 | 23.96 | 35.53 | a | 62.17 | 67.61 | 76.87 | 87.32 | 81.84 | 66.20 | 54.16 | 43.13 | 34.52 | 55.30 | ||||||||||||
2007 | 22.26 | 15.36 | 41.00 | 50.07 | 71.77 | 78.53 | 83.13 | 79.77 | 74.47 | 60.68 | 41.10 | 21.48 | 53.30 | |||||||||||||
2008 | 20.19 | 23.03 | 36.06 | 50.87 | 67.03 | 72.93 | 81.13 | 81.23 | 73.67 | 56.43 | a | 39.70 | 19.10 | 51.78 | ||||||||||||
2009 | 15.61 | 26.36 | 37.16 | 54.97 | 69.39 | 74.57 | 77.45 | 76.84 | 73.70 | 46.13 | 49.87 | 17.84 | 51.66 | |||||||||||||
2010 | 16.58 | 21.43 | 42.90 | 63.60 | 66.45 | 76.57 | 82.48 | 84.13 | 68.30 | 62.16 | 40.40 | 18.03 | 53.59 | |||||||||||||
2011 | 14.42 | 20.11 | 30.16 | 49.80 | 66.06 | 76.27 | 85.58 | 81.55 | 72.47 | 62.84 | 43.13 | 34.55 | 53.08 | |||||||||||||
2012 | 29.90 | 34.24 | 56.52 | 60.90 | 71.71 | 80.63 | 90.16 | 83.39 | 77.10 | 56.58 | 43.13 | 25.19 | 59.12 | |||||||||||||
2013 | 20.90 | 23.79 | 29.61 | 39.93 | 66.16 | 74.87 | 81.06 | 81.87 | 78.80 | 53.13 | 40.00 | 16.32 | 50.54 | |||||||||||||
2014 | 18.52 | 16.89 | 36.71 | 53.97 | 68.55 | 76.83 | 80.00 | 78.81 | 71.83 | 61.48 | 30.00 | 26.35 | 51.66 | |||||||||||||
2015 | 25.16 | 20.71 | 46.68 | 60.87 | 65.35 | 77.80 | 82.52 | 79.26 | 78.00 | 62.00 | 46.93 | 26.94 | 56.02 | |||||||||||||
2016 | 21.32 | 28.97 | 49.13 | 56.33 | 71.52 | 82.50 | 83.26 | 80.81 | 71.23 | 59.74 | 48.20 | 19.52 | 56.04 | |||||||||||||
2017 | 19.58 | 34.11 | 39.23 | 56.07 | 67.58 | 78.33 | 85.58 | 75.65 | 73.77 | 58.13 | 39.13 | 24.03 | 54.27 | |||||||||||||
2018 | 22.61 | 18.71 | 31.68 | 42.70 | 75.42 | 80.03 | 80.77 | 79.52 | 71.40 | 51.26 | 30.57 | 29.16 | 51.15 | |||||||||||||
2019 | 16.42 | 11.18 | 30.26 | 52.23 | 62.48 | 78.03 | 81.65 | 75.84 | 72.27 | 48.94 | 35.33 | 24.26 | 49.07 | |||||||||||||
2020 | 21.00 | 25.38 | 41.97 | a | 54.00 | 64.58 | 82.10 | 84.61 | 82.87 | 72.20 | 50.26 | 48.27 | 33.26 | 55.04 | ||||||||||||
2021 | 27.45 | 16.57 | 50.19 | 55.00 | 69.23 | 86.50 | 85.06 | 81.94 | 77.23 | 61.23 | 43.90 | 27.23 | a | 56.79 | ||||||||||||
2022 | 19.81 | 22.64 | 37.68 | 45.37 | 66.29 | 81.00 | 82.32 | 80.84 | 76.80 | 61.81 | 36.10 | 19.90 | 52.55 | |||||||||||||
2023 | 20.61 | 25.64 | 27.19 | 44.43 | 74.19 | 82.93 | 82.23 | 82.87 | 77.30 | 57.58 | 45.73 | 38.84 | 54.96 | |||||||||||||
2024 | 20.94 | 39.52 | 44.40 | f | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 30.23 | j | ||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 19.64 | 24.59 | 37.34 | 53.97 | 67.76 | 76.95 | 82.09 | 80.48 | 71.66 | 57.71 | 38.67 | 24.66 | 52.88 | |||||||||||||
S.D. | 6.45 | 6.95 | 7.04 | 5.90 | 3.50 | 3.58 | 3.59 | 3.16 | 3.93 | 4.29 | 5.88 | 6.64 | 2.23 | |||||||||||||
SKEW | -0.09 | 0.30 | 0.27 | -0.21 | 0.44 | 0.45 | -0.21 | 0.14 | -0.79 | -0.52 | -0.00 | -0.21 | 0.21 | |||||||||||||
MAX | 34.48 | 39.52 | 56.52 | 65.96 | 75.45 | 87.62 | 90.16 | 88.94 | 78.80 | 67.45 | 51.97 | 38.84 | 59.12 | |||||||||||||
MIN | 5.23 | 11.18 | 23.19 | 39.93 | 61.74 | 69.40 | 71.40 | 74.65 | 56.13 | 46.13 | 25.04 | 6.33 | 47.98 | |||||||||||||
YRS | 66 | 67 | 66 | 66 | 66 | 65 | 66 | 66 | 67 | 67 | 65 | 67 | 63 |