YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1973 | ----- | z | ----- | z | ----- | z | ----- | z | 68.97 | ----- | z | 82.45 | 85.68 | 69.53 | 65.61 | 42.30 | 24.42 | 62.71 | e | |||||||
1974 | 21.48 | 30.71 | 41.74 | 61.03 | 66.52 | 79.20 | 88.74 | 78.19 | 72.10 | 63.65 | 41.73 | 32.10 | 56.43 | |||||||||||||
1975 | 25.03 | 22.89 | a | 33.94 | 44.97 | 73.26 | 78.00 | 88.16 | 83.19 | 69.73 | 66.03 | 43.73 | 26.52 | 54.62 | ||||||||||||
1976 | 23.00 | 36.83 | 42.90 | 64.57 | 71.87 | 84.28 | a | 88.87 | 87.52 | 77.34 | a | 55.74 | 37.70 | 27.06 | 58.14 | |||||||||||
1977 | 13.90 | 35.25 | 44.42 | 65.53 | 78.55 | 82.23 | 85.77 | 77.06 | 72.97 | a | 59.29 | 39.10 | 22.77 | 56.40 | ||||||||||||
1978 | 12.97 | 18.61 | 40.32 | 53.57 | 71.71 | 80.30 | 81.97 | 82.45 | 78.87 | 62.23 | 40.20 | 23.06 | 53.85 | |||||||||||||
1979 | 9.35 | 16.57 | 33.90 | 50.80 | 66.30 | a | 79.43 | 82.48 | 78.00 | 75.10 | 59.32 | 38.87 | 35.55 | 52.14 | ||||||||||||
1980 | ----- | z | 23.97 | 37.32 | 60.83 | 73.26 | 82.10 | 86.94 | 81.45 | 76.73 | 58.10 | 47.70 | 28.84 | 59.75 | a | |||||||||||
1981 | 32.13 | 35.14 | 50.71 | 65.83 | 70.74 | 81.20 | 83.48 | 78.87 | a | 73.80 | 56.13 | 46.90 | 24.16 | 58.26 | ||||||||||||
1982 | 11.61 | 25.75 | 38.23 | 55.20 | 70.00 | 75.93 | 84.87 | 81.70 | d | 71.00 | 59.43 | a | 37.24 | a | 32.23 | 53.60 | ||||||||||
1983 | 26.58 | 31.07 | 37.45 | 49.03 | 67.00 | a | 77.13 | 87.57 | a | 88.42 | 76.31 | a | 58.58 | 37.20 | 8.32 | 53.72 | ||||||||||
1984 | 22.29 | 34.17 | 30.94 | 52.70 | 67.61 | 78.14 | a | 82.61 | 84.45 | 69.43 | 59.06 | 45.57 | 27.94 | 54.58 | ||||||||||||
1985 | 22.29 | 27.89 | 46.58 | 65.00 | 74.89 | c | 77.33 | 83.42 | 76.45 | 67.33 | 58.39 | 29.23 | 19.03 | 53.99 | ||||||||||||
1986 | 29.60 | a | 22.96 | 45.00 | 58.80 | 70.43 | a | 81.53 | 84.19 | 77.77 | 69.41 | a | 59.58 | 37.03 | 34.30 | a | 55.89 | |||||||||
1987 | 32.65 | 43.86 | 46.32 | 67.83 | 78.93 | a | 83.50 | 85.16 | 78.73 | a | 73.37 | 57.23 | 46.47 | 29.39 | 60.29 | |||||||||||
1988 | 18.13 | 21.38 | 44.52 | 60.77 | 79.17 | a | 88.07 | 87.90 | 84.26 | 75.90 | 57.32 | 40.93 | a | 31.66 | b | 57.50 | ||||||||||
1989 | 33.84 | 20.30 | a | 37.52 | 58.27 | 71.63 | a | 79.66 | a | 84.55 | 81.26 | 71.36 | b | 64.76 | j | 38.40 | 19.68 | 54.22 | a | |||||||
1990 | 38.90 | 36.18 | 44.29 | 59.70 | 67.13 | 81.27 | 81.65 | h | 80.54 | g | 78.33 | 61.03 | 45.37 | 23.90 | 53.61 | b | ||||||||||
1991 | 20.71 | 36.93 | 46.26 | 60.33 | 70.77 | a | 81.23 | 81.61 | 81.17 | a | 69.83 | a | 58.13 | 31.53 | 31.94 | 55.87 | ||||||||||
1992 | 33.61 | 33.69 | 43.87 | 49.72 | a | 72.39 | 77.48 | e | 73.32 | 74.03 | 69.90 | 58.60 | a | 34.47 | 25.42 | 53.88 | ||||||||||
1993 | 21.30 | a | 20.48 | a | 33.90 | 50.73 | 64.68 | 71.93 | 78.80 | a | 79.74 | 64.17 | a | 57.03 | 36.00 | a | 25.55 | 50.36 | ||||||||
1994 | 11.52 | b | 19.44 | a | 43.68 | 55.50 | 72.55 | 78.27 | 79.61 | 77.42 | 74.00 | 61.39 | c | 45.31 | a | 29.00 | 53.97 | |||||||||
1995 | 22.86 | c | 29.54 | 39.65 | 48.33 | 62.24 | b | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 40.52 | g | |||
1996 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 78.81 | 78.61 | 68.23 | 61.26 | 30.54 | d | 18.20 | a | 55.94 | f | ||||
1997 | 15.70 | a | 25.07 | 34.13 | a | 50.70 | 63.03 | 81.73 | 82.21 | b | 78.29 | 76.10 | 62.03 | 34.30 | 31.06 | 52.86 | ||||||||||
1998 | 24.06 | 36.86 | 33.58 | 57.63 | 76.03 | 74.30 | 81.81 | 80.65 | 79.03 | 60.94 | 41.50 | 34.58 | 56.75 | |||||||||||||
1999 | 19.42 | 35.68 | 42.32 | 54.97 | 69.16 | 76.37 | 85.37 | d | 80.61 | 72.67 | 60.68 | 55.40 | 35.71 | 57.36 | ||||||||||||
2000 | 26.83 | a | 37.41 | 50.74 | 56.34 | a | 71.59 | b | 76.50 | 81.81 | 81.62 | b | 73.33 | 61.29 | 34.20 | 14.87 | 55.55 | |||||||||
2001 | 25.45 | 19.19 | b | 31.63 | a | 55.37 | 68.71 | 78.36 | b | 84.03 | 81.68 | 71.59 | a | 60.27 | a | 55.43 | 32.48 | 55.35 | ||||||||
2002 | 32.63 | a | 38.57 | 29.79 | c | 54.48 | a | 65.86 | b | ----- | z | 87.45 | 79.19 | 73.38 | a | 49.55 | 41.80 | 35.00 | 53.43 | a | ||||||
2003 | 25.48 | 25.44 | a | 41.03 | 58.07 | 66.61 | 76.60 | 81.88 | e | 84.32 | 71.87 | 62.84 | 37.67 | 30.10 | 55.16 | |||||||||||
2004 | 21.57 | c | 24.86 | 45.32 | 62.13 | 66.16 | 73.33 | 79.37 | a | 76.19 | 76.37 | 60.55 | 47.73 | 32.55 | 55.51 | |||||||||||
2005 | 21.79 | b | 36.89 | 40.81 | 62.40 | 66.20 | a | 81.13 | 84.28 | b | 80.31 | b | 77.83 | 61.90 | a | 46.50 | 23.45 | 56.96 | ||||||||
2006 | 33.43 | a | 28.25 | 39.37 | a | 60.14 | a | 69.68 | 79.69 | a | 86.87 | 80.58 | 67.77 | 57.52 | 46.67 | 35.06 | 57.09 | |||||||||
2007 | 25.58 | 19.75 | 43.94 | 53.77 | 74.45 | 81.03 | 86.43 | c | 80.23 | a | 76.03 | 64.37 | a | 43.40 | 23.29 | 56.02 | ||||||||||
2008 | 20.10 | 22.14 | a | 35.81 | 51.70 | 66.87 | a | 77.70 | 83.45 | 80.69 | b | 73.90 | a | 59.42 | 41.90 | 21.10 | 52.90 | |||||||||
2009 | 19.39 | 33.00 | g | 40.52 | 54.57 | 67.85 | k | 75.87 | 78.14 | b | 77.97 | b | 74.87 | 47.65 | 50.66 | a | 21.58 | 54.12 | b | |||||||
2010 | 15.80 | a | 22.18 | 43.16 | 65.34 | a | 68.38 | b | 78.34 | a | 83.13 | a | 84.41 | b | 69.64 | b | 64.37 | a | 42.37 | 19.84 | 54.75 | |||||
2011 | 16.06 | 23.31 | b | 33.87 | 51.37 | 65.80 | a | 76.40 | e | 86.93 | d | 80.63 | a | 71.17 | a | 64.74 | 46.55 | a | 34.10 | a | 54.24 | |||||
2012 | 31.48 | 34.45 | 56.53 | a | 61.90 | 72.77 | a | 82.67 | c | 89.90 | 81.77 | 75.47 | 55.66 | b | 44.90 | 29.61 | 59.76 | |||||||||
2013 | 24.39 | 25.71 | 32.97 | 45.52 | a | 64.65 | 77.24 | a | 83.31 | b | 81.40 | a | 76.93 | a | 56.32 | 39.60 | 19.77 | 52.32 | ||||||||
2014 | 19.60 | a | 19.36 | 34.30 | a | 55.07 | 67.27 | e | 77.85 | c | 78.48 | 78.00 | 71.07 | 60.19 | 33.03 | 28.26 | 51.87 | |||||||||
2015 | 26.16 | 21.36 | 45.74 | 61.47 | 67.84 | 78.47 | 82.10 | a | 77.77 | a | 76.27 | 62.40 | a | 46.29 | b | 31.27 | a | 56.43 | ||||||||
2016 | 21.63 | a | 29.68 | a | 46.90 | a | 58.19 | c | 69.77 | a | 82.86 | b | 82.83 | b | 80.03 | a | 73.10 | 61.68 | 49.67 | 23.84 | 56.68 | |||||
2017 | 25.13 | 38.14 | 40.47 | a | 54.73 | 64.61 | 80.12 | e | 83.03 | 75.42 | 77.27 | 58.68 | 40.63 | 27.55 | 55.48 | |||||||||||
2018 | 18.85 | e | 20.08 | b | 34.26 | 40.07 | 74.81 | 79.67 | 80.16 | 78.58 | 71.73 | 52.71 | 33.40 | 27.39 | 50.97 | |||||||||||
2019 | 18.26 | 12.18 | 31.00 | 52.07 | 59.81 | 77.60 | 80.90 | 78.68 | f | 71.60 | 49.68 | 35.03 | 26.16 | 46.75 | a | |||||||||||
2020 | 22.19 | 24.93 | 41.68 | 52.50 | 62.26 | 81.57 | 82.36 | f | 81.52 | 70.37 | 49.77 | 46.67 | 34.13 | 51.60 | a | |||||||||||
2021 | 27.29 | 15.39 | 46.03 | 53.30 | 64.90 | 85.07 | 81.61 | 79.62 | j | 75.10 | 62.58 | 44.27 | 30.84 | 53.31 | a | |||||||||||
2022 | 23.52 | 24.07 | 38.35 | 47.07 | 66.32 | 80.00 | 82.74 | 77.97 | 75.67 | 62.00 | 41.23 | 21.29 | 53.35 | |||||||||||||
2023 | 23.68 | 25.07 | 29.61 | 49.50 | 72.39 | 80.77 | 78.61 | 81.76 | f | 77.23 | 58.71 | 46.20 | 37.39 | 52.65 | a | |||||||||||
2024 | 19.97 | 39.03 | 43.71 | 50.88 | n | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 34.24 | i | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 23.05 | 27.52 | 40.22 | 55.91 | 69.32 | 79.35 | 83.29 | 80.35 | 73.24 | 59.22 | 41.61 | 27.27 | 55.15 | |||||||||||||
S.D. | 6.43 | 7.58 | 6.01 | 6.13 | 4.40 | 3.06 | 3.36 | 3.01 | 3.38 | 4.09 | 5.96 | 6.11 | 2.23 | |||||||||||||
SKEW | 0.17 | 0.18 | 0.16 | -0.16 | 0.30 | 0.19 | -0.29 | 0.54 | -0.30 | -1.00 | 0.06 | -0.62 | 0.07 | |||||||||||||
MAX | 38.90 | 43.86 | 56.53 | 67.83 | 79.17 | 88.07 | 89.90 | 88.42 | 79.03 | 66.03 | 55.43 | 37.39 | 60.29 | |||||||||||||
MIN | 9.35 | 12.18 | 29.61 | 40.07 | 59.81 | 71.93 | 73.32 | 74.03 | 64.17 | 47.65 | 29.23 | 8.32 | 50.36 | |||||||||||||
YRS | 49 | 49 | 50 | 49 | 49 | 47 | 48 | 46 | 50 | 49 | 50 | 50 | 39 |