YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1967 | ----- | z | ----- | z | ----- | z | 43.42 | r | 61.52 | 74.13 | 83.13 | 82.77 | 72.90 | 56.93 | c | 35.57 | 22.39 | 61.17 | d | |||||||
1968 | 16.58 | 20.82 | a | 44.26 | 55.33 | 62.84 | 72.97 | 79.13 | 77.65 | 69.23 | 57.97 | 40.03 | 16.10 | 51.08 | ||||||||||||
1969 | 6.34 | b | 20.11 | 25.13 | a | 53.87 | 69.68 | 68.53 | 77.90 | 87.06 | 72.57 | 48.87 | 39.60 | 25.74 | 49.62 | |||||||||||
1970 | 11.39 | 23.86 | 26.71 | 45.60 | 62.81 | 80.23 | 82.68 | 83.77 | 72.67 | 55.90 | 32.97 | 20.26 | 49.90 | |||||||||||||
1971 | 7.77 | a | 21.07 | 32.00 | a | 54.73 | 67.77 | 77.57 | 79.53 | a | 87.06 | 71.17 | 56.24 | b | 35.48 | c | 20.19 | 50.88 | ||||||||
1972 | 13.90 | 16.31 | 33.81 | 48.67 | 71.35 | 78.43 | 79.26 | 85.48 | 70.19 | c | 54.46 | c | 34.32 | b | 16.00 | a | 50.18 | |||||||||
1973 | 24.52 | b | 28.86 | 44.60 | a | 53.80 | 70.03 | 77.93 | b | 83.10 | 86.84 | 68.73 | 61.71 | 32.07 | b | 17.53 | a | 54.14 | ||||||||
1974 | 15.32 | 21.93 | 29.90 | 51.20 | 62.25 | c | 79.33 | 85.39 | 75.90 | b | 68.75 | b | 60.36 | c | 35.17 | 27.32 | 51.07 | |||||||||
1975 | 21.17 | b | 20.21 | 29.67 | d | 39.40 | 67.55 | 75.70 | c | 84.27 | a | 79.30 | a | 69.30 | c | 59.23 | a | 40.20 | 26.35 | 51.03 | ||||||
1976 | 19.68 | 31.00 | 33.84 | 59.62 | a | 74.52 | b | 81.08 | d | 82.36 | c | 85.17 | b | 78.04 | f | 52.97 | b | 35.48 | a | 22.75 | c | 52.59 | a | |||
1977 | 6.50 | c | 30.11 | a | 43.97 | b | 66.20 | e | 79.59 | b | 79.15 | c | 83.67 | a | 75.48 | f | 66.96 | e | 60.18 | c | 36.54 | b | 13.27 | a | 51.47 | a |
1978 | 6.48 | b | 13.88 | b | 33.58 | 51.96 | b | 73.04 | d | 78.31 | a | 82.33 | d | ----- | z | 75.62 | d | 60.67 | d | 31.93 | c | 16.03 | b | 47.62 | a | |
1979 | 3.50 | a | 7.81 | a | 28.97 | 39.03 | 60.32 | 76.92 | d | 80.69 | b | 78.30 | d | 77.04 | d | 57.37 | d | 34.73 | d | 35.54 | g | 49.52 | a | |||
1980 | 15.68 | c | 19.69 | 31.67 | g | 65.45 | a | 77.39 | 78.60 | 84.90 | 76.32 | c | 67.07 | b | 52.41 | b | 41.03 | a | 24.42 | g | 57.85 | b | ||||
1981 | 24.54 | e | 28.28 | c | 44.93 | a | 60.86 | b | 68.17 | b | 72.72 | a | 81.15 | d | 83.07 | c | 71.82 | b | 55.83 | b | 45.13 | 20.53 | a | 54.75 | ||
1982 | 1.76 | b | 20.31 | b | 28.83 | a | 51.90 | 66.53 | a | 71.10 | 82.47 | a | 80.40 | a | 71.12 | f | 54.21 | b | 33.48 | a | 30.17 | a | 47.38 | a | ||
1983 | 28.39 | 30.63 | a | 33.71 | 49.67 | 66.86 | c | 75.12 | v | 88.41 | b | 90.50 | a | 70.07 | a | 54.42 | e | 37.80 | 12.68 | i | 55.05 | b | ||||
1984 | 24.58 | e | 32.24 | d | 29.52 | 54.00 | b | 66.47 | a | 75.10 | 84.39 | 87.19 | d | 64.40 | e | 54.31 | b | 37.04 | c | 19.15 | d | 52.36 | ||||
1985 | 17.56 | d | 18.73 | b | 42.93 | a | 62.17 | a | 72.84 | 69.75 | b | 83.17 | b | 74.67 | a | 62.70 | c | 54.93 | c | 20.54 | f | 13.83 | g | 55.95 | b | |
1986 | 25.14 | b | 19.42 | b | 45.55 | 51.87 | 71.66 | b | 80.89 | b | 82.39 | 79.89 | c | 64.42 | d | 58.90 | a | 29.37 | c | 29.25 | c | 53.23 | ||||
1987 | 25.66 | b | 32.96 | 34.35 | 65.23 | 74.70 | a | 81.67 | 81.61 | 77.97 | b | 72.60 | 55.06 | 44.07 | 30.81 | e | 56.39 | |||||||||
1988 | 18.41 | b | 23.04 | a | 39.00 | a | 59.90 | 76.68 | 87.25 | b | 88.87 | 83.94 | 70.80 | 58.60 | a | 36.08 | d | 24.50 | c | 55.59 | ||||||
1989 | 22.50 | c | 13.07 | 28.68 | 55.03 | 72.07 | a | 74.72 | a | 87.53 | a | 82.35 | 72.17 | 59.76 | b | 39.52 | e | 18.16 | 52.13 | |||||||
1990 | 33.97 | a | 31.89 | 42.38 | b | 57.93 | a | 68.27 | e | 77.53 | 80.07 | b | 85.78 | d | 76.21 | a | 61.28 | b | 42.10 | 22.78 | d | 56.68 | ||||
1991 | 16.22 | d | 35.82 | 43.37 | a | 60.53 | 70.35 | 78.47 | 81.61 | 84.86 | b | 71.57 | 52.74 | 28.79 | b | 28.56 | f | 56.76 | a | |||||||
1992 | 30.06 | 33.17 | 42.26 | d | 52.30 | c | 75.97 | 78.93 | a | 77.23 | e | 78.12 | e | 70.76 | a | 59.25 | g | 30.24 | a | 16.58 | 53.24 | a | ||||
1993 | 16.79 | c | 19.00 | 36.19 | 54.39 | b | 69.87 | 71.03 | a | 73.77 | 77.17 | a | 67.38 | a | 59.68 | f | 34.75 | b | 24.00 | 49.49 | a | |||||
1994 | 5.45 | b | 13.50 | 39.42 | 57.12 | d | 74.35 | 76.36 | b | 77.23 | a | 80.13 | a | 73.97 | 56.72 | b | 38.93 | c | 25.07 | a | 51.52 | |||||
1995 | 16.11 | d | 22.26 | e | 31.59 | b | 47.30 | 64.00 | a | 79.33 | 79.68 | 83.07 | b | 71.18 | b | 53.45 | b | 28.97 | 18.10 | 49.59 | ||||||
1996 | 9.61 | 24.61 | a | 26.90 | 45.10 | a | 63.00 | c | 80.84 | e | 78.06 | 82.66 | b | 68.64 | h | 57.16 | 23.74 | c | 11.72 | b | 45.76 | a | ||||
1997 | 10.00 | 26.28 | c | 31.81 | 49.76 | e | 67.52 | 81.28 | a | 81.14 | c | 80.63 | a | 76.66 | a | 59.40 | a | 31.07 | 32.65 | 52.35 | ||||||
1998 | 17.27 | a | 32.89 | 31.35 | 61.47 | 72.56 | d | 73.00 | b | 84.07 | c | 85.82 | c | 78.41 | c | 57.20 | a | 33.55 | a | 23.52 | b | 54.26 | ||||
1999 | 14.55 | b | 29.11 | a | 39.10 | a | 55.12 | d | 66.57 | a | 74.93 | a | 81.63 | a | 79.29 | 66.87 | 57.87 | a | 50.34 | a | 33.86 | b | 54.10 | |||
2000 | 21.41 | d | 33.81 | b | 47.96 | c | 56.50 | d | 70.87 | a | 75.29 | b | 81.17 | b | 80.77 | a | 69.93 | c | 59.06 | 33.05 | h | 11.14 | c | 55.26 | a | |
2001 | 26.69 | b | 17.61 | j | 37.90 | k | 52.83 | g | 70.00 | c | 74.80 | j | 80.83 | h | 82.54 | c | 69.18 | h | 53.20 | k | 50.00 | p | 28.71 | q | 59.74 | i |
2002 | 29.35 | n | 37.19 | l | 26.20 | p | 55.62 | q | 62.52 | h | 77.50 | r | 82.00 | o | 77.88 | n | 69.55 | j | 44.10 | j | 43.80 | t | 29.00 | m | ----- | z |
2003 | 23.33 | v | 22.45 | q | 42.14 | q | 56.36 | b | 64.94 | 74.17 | 78.92 | f | 84.04 | g | 68.67 | c | 60.92 | g | 31.43 | g | 28.52 | d | 58.53 | g | ||
2004 | 9.35 | e | 25.58 | c | 39.67 | d | 57.65 | d | 60.07 | a | 71.53 | 78.10 | 72.81 | 68.68 | b | 55.63 | d | 44.35 | d | 25.97 | 50.78 | |||||
2005 | 16.25 | c | 29.64 | f | 40.82 | i | 59.41 | m | 65.20 | a | 75.25 | b | 82.52 | b | 80.14 | b | 74.88 | e | 58.38 | j | 37.42 | r | 23.68 | l | 65.71 | f |
2006 | 31.50 | g | 26.81 | l | 37.26 | h | 64.67 | i | 70.70 | d | 77.50 | b | 89.29 | 84.07 | c | 69.17 | 51.36 | f | 40.85 | q | 32.28 | m | 78.15 | g | ||
2007 | 24.60 | p | 17.00 | g | 42.23 | e | 53.25 | b | 69.59 | b | 76.08 | e | 86.79 | g | 78.00 | b | 71.10 | a | 58.80 | f | 40.00 | j | 20.40 | f | 65.04 | f |
2008 | 20.83 | g | 15.21 | j | 34.83 | g | 54.23 | 67.36 | f | 72.88 | e | 81.93 | a | 81.86 | c | 70.87 | 55.55 | 38.36 | h | 14.92 | g | 69.55 | f | |||
2009 | 13.21 | c | 20.70 | a | 27.42 | e | 49.89 | b | 65.10 | 73.50 | 77.68 | 76.97 | 76.80 | 45.10 | a | 48.33 | 15.40 | a | 49.18 | |||||||
2010 | 16.61 | 18.78 | a | 39.40 | a | 60.86 | b | 64.87 | 75.00 | a | 82.80 | a | 83.48 | 66.00 | 61.66 | b | 37.43 | b | 14.73 | i | 55.17 | a | ||||
2011 | 14.68 | f | 18.71 | d | 27.21 | c | 48.92 | d | 62.13 | 72.27 | 82.55 | 80.33 | a | 72.86 | i | 59.93 | b | 42.00 | c | 31.65 | 52.57 | b | ||||
2012 | 28.94 | 32.07 | b | 50.90 | 60.13 | g | 68.50 | c | 77.57 | 86.00 | 80.42 | 73.70 | 50.58 | 34.50 | 22.76 | f | 58.32 | b | ||||||||
2013 | 21.24 | f | 21.91 | e | 23.42 | g | 37.26 | g | 65.52 | b | 76.91 | g | 83.59 | i | 82.73 | a | 75.87 | g | 63.00 | t | 40.23 | h | 14.84 | l | 56.72 | i |
2014 | 16.52 | j | 14.39 | j | 35.19 | j | 48.96 | g | 65.79 | c | 73.57 | i | 78.29 | j | 79.77 | i | 72.52 | g | 60.95 | i | 31.13 | o | 23.65 | h | 65.79 | k |
2015 | 22.45 | k | 19.53 | i | 43.18 | i | 60.08 | f | 66.93 | d | 78.41 | a | 81.93 | a | 82.23 | 76.67 | 59.76 | b | 45.56 | e | 26.13 | h | 70.21 | e | ||
2016 | 19.75 | c | 30.07 | 46.41 | b | 50.79 | a | 71.44 | d | 78.38 | d | 81.12 | e | 80.55 | 69.07 | 57.97 | 50.47 | 18.35 | 54.53 | |||||||
2017 | 17.77 | a | 27.50 | 33.52 | 52.97 | 66.94 | 76.53 | 82.77 | 77.42 | 69.50 | 58.77 | 33.63 | 23.19 | 51.71 | ||||||||||||
2018 | 20.53 | a | 15.89 | 32.32 | 43.47 | 76.10 | 80.10 | 81.94 | 82.19 | 68.33 | 47.90 | 28.20 | 26.42 | 50.28 | ||||||||||||
2019 | 13.61 | 3.89 | 28.13 | 51.00 | 61.45 | 76.17 | 81.58 | 75.97 | 67.93 | 44.23 | 32.80 | 21.87 | 46.55 | |||||||||||||
2020 | 18.32 | 24.14 | 36.68 | 47.97 | 63.00 | 82.30 | 83.58 | 81.65 | 72.07 | 49.45 | 42.90 | 32.48 | 52.88 | |||||||||||||
2021 | 26.32 | 13.43 | 47.77 | 53.67 | 68.87 | 85.67 | 89.19 | 84.61 | 76.50 | 58.26 | 40.63 | 24.13 | a | 55.76 | ||||||||||||
2022 | 20.35 | 17.63 | a | 34.74 | 39.77 | 64.10 | 78.30 | 82.16 | 81.10 | 73.97 | 59.26 | 32.63 | 13.57 | a | 49.80 | |||||||||||
2023 | 19.58 | 20.32 | 23.58 | 38.40 | 72.87 | 81.45 | a | 78.26 | 78.16 | 74.27 | 54.77 | 39.93 | 34.06 | 51.31 | ||||||||||||
2024 | 17.58 | 35.48 | 35.74 | 48.62 | v | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 29.60 | i | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 17.37 | 23.39 | 36.00 | 53.17 | 68.44 | 76.96 | 82.11 | 81.37 | 71.07 | 56.06 | 37.03 | 22.72 | 52.12 | |||||||||||||
S.D. | 7.36 | 7.39 | 7.09 | 6.73 | 4.71 | 3.81 | 3.21 | 3.67 | 3.63 | 4.12 | 5.94 | 6.28 | 2.42 | |||||||||||||
SKEW | -0.07 | -0.28 | 0.24 | -0.30 | 0.25 | 0.16 | 0.21 | 0.04 | 0.01 | -1.06 | 0.32 | 0.07 | 0.12 | |||||||||||||
MAX | 33.97 | 35.82 | 50.90 | 66.20 | 79.59 | 87.25 | 89.29 | 90.50 | 78.41 | 61.71 | 50.47 | 34.06 | 56.68 | |||||||||||||
MIN | 1.76 | 3.89 | 23.58 | 38.40 | 60.07 | 68.53 | 73.77 | 72.81 | 62.70 | 44.23 | 23.74 | 11.14 | 46.55 | |||||||||||||
YRS | 48 | 48 | 47 | 48 | 55 | 52 | 51 | 52 | 49 | 47 | 46 | 41 | 30 |