YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1973 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 21.93 | a | 21.93 | k |
1974 | 19.81 | 26.43 | 34.30 | a | 55.03 | 62.00 | a | 78.50 | 90.06 | 79.33 | a | 70.50 | 63.77 | 42.63 | 31.90 | 54.52 | ||||||||||
1975 | 24.97 | a | 21.29 | 31.80 | a | 42.13 | 70.26 | 76.13 | 89.16 | 81.58 | 68.43 | 61.58 | 43.90 | 26.26 | 53.12 | |||||||||||
1976 | ----- | z | 37.72 | 41.42 | 63.41 | a | 71.81 | 86.13 | 92.23 | 90.71 | 77.24 | a | 56.94 | 37.17 | a | 25.26 | 61.82 | a | ||||||||
1977 | 9.77 | a | 32.61 | 43.42 | 63.53 | 79.10 | 80.24 | a | 86.65 | 76.94 | 71.00 | 60.42 | ----- | z | 18.61 | 56.57 | a | |||||||||
1978 | 10.43 | a | 17.04 | 35.81 | 51.33 | 70.48 | 77.83 | 82.52 | 84.61 | 78.63 | 62.06 | 39.43 | 23.03 | 52.77 | ||||||||||||
1979 | 7.32 | 11.57 | 31.90 | 46.50 | 62.84 | 77.17 | 82.90 | 78.32 | 77.67 | 59.00 | 39.30 | 35.81 | 50.86 | |||||||||||||
1980 | 22.39 | 23.86 | 32.90 | 63.00 | 76.13 | a | 78.20 | 86.65 | 81.70 | a | 72.83 | 55.83 | b | 47.87 | 28.45 | 55.82 | ||||||||||
1981 | 29.03 | 33.67 | a | 50.47 | a | 62.30 | 70.81 | 76.47 | 84.68 | 83.81 | 75.87 | 55.52 | 49.43 | 21.65 | 57.81 | |||||||||||
1982 | 7.66 | b | 24.40 | c | 35.97 | a | 54.00 | 69.68 | 75.37 | 85.94 | 84.50 | a | 72.47 | 56.77 | 36.43 | 32.62 | b | 52.98 | ||||||||
1983 | 29.48 | b | 32.58 | b | 36.50 | a | 52.40 | 66.81 | 78.10 | 89.52 | 90.68 | 72.07 | 56.87 | 38.21 | b | 9.93 | b | 54.43 | ||||||||
1984 | 23.43 | a | 35.52 | 30.97 | 55.77 | 67.48 | 77.93 | 84.87 | 86.87 | 68.90 | 58.39 | 42.72 | a | 25.85 | e | 54.89 | ||||||||||
1985 | 20.32 | c | 23.59 | a | 45.26 | 63.69 | a | 75.39 | 74.41 | a | 85.55 | 77.03 | 66.27 | 57.97 | a | 28.67 | 18.76 | b | 53.08 | |||||||
1986 | 27.55 | b | 21.19 | b | 43.14 | b | 55.72 | a | 69.06 | 80.70 | 83.68 | 78.13 | 66.53 | 58.70 | a | 36.00 | a | 36.76 | b | 54.76 | ||||||
1987 | 32.86 | b | 40.43 | 42.07 | a | 68.14 | a | 76.83 | b | 84.20 | 86.90 | 81.26 | 74.43 | 55.13 | 45.89 | c | 31.63 | d | 59.98 | |||||||
1988 | 22.37 | d | 25.11 | a | 44.27 | a | 63.50 | 79.61 | 92.45 | a | 93.65 | 86.65 | 73.46 | b | 56.84 | 37.89 | b | 29.75 | c | 58.80 | ||||||
1989 | 31.10 | b | 18.96 | d | 32.40 | a | 55.59 | a | 73.17 | a | 79.59 | a | 90.32 | 82.77 | 74.07 | a | 62.67 | a | 38.36 | b | 18.00 | d | 54.75 | |||
1990 | 35.20 | a | 34.42 | b | 44.13 | 60.07 | 67.97 | 80.17 | 83.55 | 83.45 | 77.73 | 59.42 | 46.70 | 24.81 | 58.13 | |||||||||||
1991 | 21.39 | 37.46 | 41.35 | 60.77 | 71.39 | 80.73 | 82.19 | 83.81 | 69.77 | 56.77 | 33.57 | b | 31.13 | 55.86 | ||||||||||||
1992 | 32.06 | 34.00 | 45.29 | 52.37 | 75.00 | 75.67 | 74.06 | 78.32 | 71.27 | 59.71 | 32.50 | 22.13 | 54.37 | |||||||||||||
1993 | 19.71 | 21.68 | 38.03 | a | 53.57 | 68.68 | 72.60 | 77.00 | 79.94 | 65.97 | 55.29 | 35.53 | 26.23 | 51.18 | ||||||||||||
1994 | 8.45 | 16.86 | 41.61 | 56.93 | 74.26 | 80.27 | 79.65 | 78.06 | 74.37 | 60.16 | 44.77 | 31.29 | 53.89 | |||||||||||||
1995 | 21.42 | 26.29 | 37.06 | 47.69 | a | 66.93 | a | 80.87 | 82.45 | 82.65 | 71.10 | 53.94 | 32.76 | a | 23.71 | 52.24 | ||||||||||
1996 | 15.42 | g | 24.79 | 29.32 | 50.63 | 65.03 | a | 80.53 | 81.06 | 83.19 | 70.43 | 59.86 | c | 27.10 | 15.13 | 53.37 | a | |||||||||
1997 | 15.58 | g | 27.67 | a | 36.39 | c | 52.34 | a | 66.90 | a | 82.77 | 82.03 | 79.55 | 76.03 | 63.11 | d | 34.13 | 33.19 | 57.65 | a | ||||||
1998 | 21.26 | 34.25 | 34.25 | c | ----- | z | 74.29 | 73.67 | 84.39 | 84.29 | 79.79 | a | 59.55 | 41.17 | a | 33.52 | 56.40 | a | ||||||||
1999 | 18.77 | 36.19 | a | 44.32 | 55.38 | a | 70.16 | 77.07 | 85.52 | 81.13 | 68.83 | 57.48 | 52.50 | 37.20 | a | 57.05 | ||||||||||
2000 | 22.71 | 32.66 | 48.84 | 54.70 | 71.10 | a | 76.45 | a | 82.90 | 82.74 | 70.93 | 61.17 | a | 34.93 | 13.48 | 54.38 | ||||||||||
2001 | 27.42 | 16.18 | 32.81 | 52.90 | 70.71 | 78.10 | 85.68 | 85.55 | 71.17 | 56.87 | 53.70 | 30.03 | 55.09 | |||||||||||||
2002 | 28.00 | a | 37.07 | 28.97 | 51.70 | 64.52 | 81.63 | 86.23 | 79.61 | 75.33 | 47.68 | 40.93 | 32.45 | 54.51 | ||||||||||||
2003 | 22.61 | 22.54 | 39.23 | 58.87 | 66.77 | 77.67 | 85.77 | 86.47 | a | 73.77 | 65.10 | b | 37.41 | a | 30.08 | e | 55.52 | |||||||||
2004 | 18.43 | a | 30.18 | a | 46.48 | 61.97 | 66.26 | 75.43 | 81.10 | 77.32 | 75.14 | a | 58.71 | 46.87 | 31.14 | c | 55.75 | |||||||||
2005 | 20.48 | b | 33.43 | 42.06 | 62.30 | 65.74 | 80.10 | 84.00 | b | 80.83 | a | 76.59 | c | 62.32 | 46.93 | c | 26.77 | 56.80 | ||||||||
2006 | 32.77 | 25.82 | 37.73 | a | 61.40 | 68.87 | a | 78.18 | b | 88.60 | f | 83.00 | d | 68.37 | c | 56.50 | c | 45.21 | b | 36.97 | 54.08 | a | ||||
2007 | 26.60 | a | 19.14 | 43.13 | 51.67 | 71.54 | c | 78.26 | c | 84.18 | c | 77.97 | 73.00 | c | 61.24 | f | 44.35 | d | 22.48 | b | 53.85 | a | ||||
2008 | 20.45 | b | 21.36 | a | 36.20 | a | 50.64 | e | 67.50 | m | 74.96 | b | 83.48 | h | 82.00 | c | 73.20 | 57.97 | 42.03 | a | 18.60 | a | 47.74 | b | ||
2009 | 16.17 | a | 25.18 | 32.85 | d | 52.43 | 68.52 | b | 72.75 | f | 77.79 | c | 77.41 | d | 75.14 | a | 46.65 | 50.62 | d | 18.50 | a | 49.20 | a | |||
2010 | 17.23 | 19.64 | 41.71 | 64.13 | 66.58 | 77.00 | 84.13 | 83.96 | d | 67.73 | 63.23 | a | 40.60 | 19.06 | 53.75 | |||||||||||
2011 | 13.68 | 21.92 | b | 29.33 | a | 51.67 | 63.58 | 74.10 | 85.66 | b | 81.71 | 73.50 | 64.39 | 45.83 | a | 34.83 | a | 53.35 | ||||||||
2012 | 31.43 | a | 34.45 | 54.35 | 59.57 | 71.80 | a | 80.04 | f | 87.71 | 81.59 | b | 76.32 | b | 55.61 | 42.86 | b | 24.14 | b | 56.35 | a | |||||
2013 | 22.57 | h | 24.96 | e | 27.38 | b | 41.13 | 67.30 | k | 76.95 | k | 81.83 | b | 86.17 | m | 76.04 | b | 62.54 | r | 39.46 | b | 18.29 | 44.16 | e | ||
2014 | 21.45 | b | 19.82 | 36.86 | c | 51.45 | a | 67.05 | j | 76.71 | f | 78.62 | e | 77.07 | p | 72.80 | 62.16 | 32.13 | 28.65 | 44.88 | c | |||||
2015 | 27.06 | 19.21 | 45.26 | 61.77 | 67.13 | 80.27 | 84.42 | 81.26 | 79.43 | 63.13 | 49.67 | 31.39 | 57.50 | |||||||||||||
2016 | 23.60 | a | 32.59 | 49.74 | 56.53 | 72.77 | 83.73 | 83.43 | a | 82.94 | 73.53 | 60.23 | 52.77 | 25.03 | 58.07 | |||||||||||
2017 | 23.29 | 37.71 | 40.29 | 57.73 | 69.19 | 81.47 | 86.03 | 78.10 | 74.03 | 60.97 | 40.13 | 28.52 | 56.46 | |||||||||||||
2018 | 23.26 | 23.54 | 36.52 | 44.17 | a | 78.32 | 81.59 | a | 83.06 | 80.67 | a | 73.20 | 52.19 | 31.97 | 31.71 | 53.35 | ||||||||||
2019 | 18.03 | 11.14 | 32.27 | a | 54.03 | 63.10 | 80.38 | a | 83.26 | 78.40 | a | 72.69 | a | 50.53 | a | 37.43 | 25.39 | 50.55 | ||||||||
2020 | 21.71 | 28.66 | 42.29 | 53.73 | 65.87 | 83.83 | 86.52 | 84.81 | 72.23 | 52.26 | 48.93 | 35.03 | 56.32 | |||||||||||||
2021 | 29.23 | 17.93 | 49.00 | 54.10 | 70.19 | 87.87 | 87.00 | 84.10 | 77.43 | 63.19 | 44.77 | 28.06 | 57.74 | |||||||||||||
2022 | 19.55 | 23.14 | 37.58 | 45.47 | 67.39 | 82.67 | 85.61 | 82.26 | 78.07 | 62.00 | 39.60 | 22.40 | a | 53.81 | ||||||||||||
2023 | 23.00 | 26.71 | 29.23 | 47.23 | 75.71 | 84.70 | 83.10 | b | 83.33 | a | 77.23 | ----- | z | ----- | z | ----- | z | 58.92 | c | |||||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 22.28 | 26.49 | 38.89 | 55.25 | 69.95 | 79.48 | 84.48 | 81.99 | 73.25 | 58.44 | 41.12 | 26.55 | 54.98 | |||||||||||||
S.D. | 6.79 | 7.33 | 6.45 | 6.20 | 4.36 | 3.89 | 3.69 | 3.27 | 3.49 | 4.14 | 6.43 | 6.54 | 2.24 | |||||||||||||
SKEW | -0.39 | 0.01 | 0.21 | -0.18 | 0.37 | 0.89 | -0.16 | 0.55 | -0.20 | -0.82 | -0.02 | -0.37 | 0.11 | |||||||||||||
MAX | 35.20 | 40.43 | 54.35 | 68.14 | 79.61 | 92.45 | 93.65 | 90.71 | 79.79 | 65.10 | 53.70 | 37.20 | 59.98 | |||||||||||||
MIN | 7.32 | 11.14 | 27.38 | 41.13 | 62.00 | 72.60 | 74.06 | 76.94 | 65.97 | 46.65 | 27.10 | 9.93 | 50.55 | |||||||||||||
YRS | 46 | 50 | 50 | 49 | 47 | 46 | 48 | 48 | 50 | 47 | 48 | 50 | 37 |