YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1968 | 40.40 | a | 46.55 | 53.03 | 52.70 | 63.48 | 71.28 | a | 82.74 | 73.65 | 71.40 | 56.10 | 44.60 | 32.62 | b | 57.38 | ||||||||||
1969 | 27.23 | 36.68 | 48.39 | 55.47 | 68.71 | 75.27 | 77.58 | 76.81 | 67.83 | 55.71 | 47.55 | a | 35.33 | a | 56.05 | |||||||||||
1970 | 33.77 | 43.18 | 47.03 | 48.83 | 64.47 | a | 76.86 | a | 79.81 | 79.61 | 64.60 | 57.35 | 43.07 | 35.03 | 56.14 | |||||||||||
1971 | 39.45 | 43.85 | a | 42.71 | 53.60 | 66.84 | 66.83 | 80.68 | 84.03 | b | 67.20 | 57.23 | 46.13 | 35.03 | 56.97 | |||||||||||
1972 | 35.45 | 41.17 | 51.35 | 52.07 | 67.97 | a | 72.17 | 79.17 | a | 80.14 | b | 66.53 | 60.45 | 44.57 | 33.90 | 57.08 | ||||||||||
1973 | 34.65 | 44.00 | 50.97 | 59.67 | 70.16 | 72.87 | 84.77 | 80.74 | 71.80 | 57.29 | 37.73 | 39.48 | 58.68 | |||||||||||||
1974 | 31.83 | a | 43.43 | 47.97 | 55.33 | 61.84 | 78.43 | 79.65 | 81.97 | a | 76.70 | 62.94 | 45.30 | 39.35 | 58.73 | |||||||||||
1975 | 36.58 | 38.61 | 44.80 | a | 52.27 | 65.74 | 70.73 | 83.65 | 74.81 | 75.20 | 54.26 | 42.38 | a | 39.32 | 56.53 | |||||||||||
1976 | 40.21 | b | 39.83 | 45.57 | a | 54.07 | 66.61 | 68.30 | 78.81 | 75.52 | 74.27 | 61.13 | 48.43 | 40.58 | 57.78 | |||||||||||
1977 | 33.03 | 44.26 | a | 46.45 | 65.30 | 60.40 | a | 78.80 | 79.39 | 83.74 | 65.93 | 58.71 | 42.20 | 37.00 | 57.93 | |||||||||||
1978 | 35.94 | 42.54 | 53.16 | 55.03 | 61.97 | 75.70 | 80.00 | 76.32 | 65.21 | a | 63.19 | 39.73 | 30.59 | b | 56.61 | |||||||||||
1979 | 26.19 | 39.89 | 52.68 | 56.70 | 67.77 | 75.13 | 84.00 | 80.48 | 75.67 | 60.59 | b | 39.10 | 40.00 | 58.18 | ||||||||||||
1980 | 29.67 | a | 39.30 | b | 47.34 | b | 62.41 | a | 67.90 | a | 70.41 | a | 80.97 | 77.03 | 72.77 | 62.63 | a | 44.07 | 42.89 | c | 58.12 | |||||
1981 | 39.26 | 42.30 | a | 52.81 | 56.93 | 65.50 | a | 69.30 | 78.87 | 85.07 | b | 73.69 | a | 54.89 | l | 46.59 | a | 36.57 | a | 58.81 | a | |||||
1982 | 36.41 | b | 41.30 | a | 49.45 | b | 54.10 | a | 66.70 | a | 76.73 | 80.06 | 80.58 | 69.48 | a | 56.64 | c | 40.44 | c | 33.57 | a | 57.12 | ||||
1983 | 40.87 | 42.96 | c | 50.43 | a | 56.86 | a | 71.10 | b | 71.10 | 76.10 | 81.93 | b | 67.83 | 61.68 | c | 42.79 | a | 27.31 | b | 57.58 | |||||
1984 | 38.63 | a | 42.31 | c | 52.41 | b | 53.74 | c | 62.57 | c | 71.80 | 83.63 | a | 82.48 | 68.59 | a | 67.18 | t | 39.84 | e | 32.13 | 57.10 | a | |||
1985 | 28.90 | 39.44 | a | ----- | z | 60.10 | a | 67.74 | 73.96 | c | 89.90 | a | 80.75 | c | 64.28 | a | 56.31 | b | 32.03 | a | 26.58 | 56.36 | a | |||
1986 | 38.68 | 40.85 | a | 54.32 | 56.74 | c | 67.79 | c | 79.96 | c | 76.97 | a | 86.33 | a | 64.63 | 63.77 | 43.03 | a | 33.61 | 58.89 | ||||||
1987 | 35.00 | 43.54 | 49.32 | 62.67 | c | 67.74 | d | 80.44 | e | 77.19 | o | 82.00 | t | 78.60 | y | ----- | z | 47.36 | s | 33.18 | n | 56.45 | f | |||
1988 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 72.96 | e | 82.32 | c | 81.43 | a | 74.19 | c | 69.48 | b | 45.32 | k | ----- | z | 76.08 | g |
1989 | ----- | z | 41.27 | q | ----- | z | 60.25 | f | 65.30 | k | 74.55 | a | 80.72 | f | 76.56 | d | 75.73 | h | 61.48 | d | 50.75 | r | 41.82 | n | 70.86 | i |
1990 | ----- | z | 42.27 | q | 53.36 | c | 61.72 | e | 62.71 | j | 73.08 | e | 86.32 | f | 82.00 | c | 81.29 | f | 58.30 | h | 49.20 | t | 31.62 | r | 67.54 | h |
1991 | ----- | z | ----- | z | 48.44 | d | 55.89 | c | 61.77 | i | 66.72 | e | 83.58 | e | 86.41 | i | 80.70 | g | 61.91 | h | 46.79 | p | 41.57 | x | 63.66 | h |
1992 | 38.88 | w | 49.75 | u | 60.50 | m | 61.74 | k | 74.22 | m | 83.35 | j | 82.09 | i | 86.27 | i | 71.33 | o | 73.50 | y | ----- | z | ----- | z | ----- | z |
1993 | ----- | z | ----- | z | 48.19 | o | 53.36 | h | 73.85 | r | 72.06 | m | 72.40 | k | 80.29 | q | 78.29 | i | 66.11 | d | 45.00 | q | 39.80 | p | 66.11 | k |
1994 | 48.25 | w | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1995 | 37.64 | f | 48.26 | e | 51.04 | f | 56.00 | e | 69.74 | d | 71.54 | d | 80.71 | c | 77.58 | g | 76.79 | b | 58.65 | e | 48.15 | d | 34.96 | e | 60.53 | c |
1996 | 37.00 | f | 40.53 | j | 50.58 | e | 58.50 | b | 61.21 | c | 74.14 | b | 87.82 | c | 87.76 | j | 73.23 | d | 57.23 | e | 46.00 | j | 34.32 | c | 62.13 | d |
1997 | 36.85 | e | 40.64 | c | 49.38 | e | 54.24 | e | 69.61 | c | ----- | z | 81.14 | b | 83.70 | d | 74.52 | e | ----- | z | 46.52 | c | 37.24 | f | 59.62 | c |
1998 | 39.77 | e | 43.14 | g | 53.27 | i | 58.50 | b | 65.55 | i | 73.42 | d | 87.48 | b | 87.48 | d | 82.88 | f | 60.42 | e | 45.08 | d | 35.68 | f | 64.59 | e |
1999 | 42.14 | i | 40.28 | j | 50.33 | j | ----- | z | 63.07 | d | 71.16 | e | 80.86 | c | 85.92 | e | 76.68 | e | 63.57 | h | 49.05 | j | 41.45 | k | 75.54 | g |
2000 | 37.00 | i | 41.95 | j | 50.07 | d | 62.71 | b | 64.64 | f | 76.57 | b | 82.41 | b | 84.50 | a | 74.92 | e | 61.33 | j | 41.13 | g | 34.21 | g | 71.87 | f |
2001 | 36.93 | q | 44.75 | p | 53.05 | j | 54.68 | e | 71.32 | c | 72.46 | d | 82.03 | b | 85.57 | a | 78.73 | d | 60.78 | h | 44.52 | g | 34.61 | c | 68.49 | e |
2002 | 37.96 | e | 45.25 | h | 45.35 | 58.75 | b | 64.46 | c | 74.57 | 86.37 | a | 82.41 | b | 76.14 | b | 60.73 | a | 48.39 | b | 35.29 | 60.95 | a | |||
2003 | 37.14 | x | 47.32 | i | 52.00 | b | 56.03 | a | 66.86 | c | 78.55 | a | 90.17 | a | 86.10 | b | 78.43 | b | 65.88 | g | 39.54 | d | 36.29 | j | 68.46 | d |
2004 | 31.44 | f | 42.36 | a | 55.21 | b | 63.07 | 65.10 | 75.62 | a | 85.20 | a | 84.52 | 71.29 | b | 60.43 | c | 49.00 | f | 41.10 | b | 64.39 | b | |||
2005 | 37.96 | d | 47.88 | d | 55.50 | a | 57.88 | d | 68.41 | b | 71.48 | c | 86.42 | 87.41 | b | 73.90 | 60.21 | c | 40.46 | b | 31.71 | c | 59.94 | |||
2006 | 39.20 | a | 40.48 | c | 46.84 | 56.21 | a | 67.97 | a | 74.17 | 86.55 | 83.29 | 75.93 | 59.83 | b | 41.53 | 34.56 | d | 58.88 | |||||||
2007 | 34.14 | c | 41.68 | 53.16 | 56.83 | 68.70 | a | 73.72 | e | 87.23 | a | 80.63 | a | 72.27 | 56.74 | 43.76 | a | 35.19 | 58.67 | |||||||
2008 | 33.03 | 43.83 | 46.39 | c | 52.53 | 66.74 | 72.37 | 83.19 | 79.87 | 71.38 | f | 59.26 | 48.00 | b | 34.20 | a | 56.31 | a | ||||||||
2009 | 35.90 | a | 40.65 | b | 43.23 | 56.53 | 67.55 | 75.73 | 86.71 | 84.39 | c | 76.93 | a | 55.50 | c | 43.73 | 31.39 | 58.19 | ||||||||
2010 | 38.71 | 44.52 | a | 50.77 | a | 54.00 | 60.19 | 70.00 | 82.65 | 81.52 | 70.00 | b | 60.90 | 42.96 | d | 34.31 | e | 57.54 | ||||||||
2011 | 42.52 | h | 39.71 | d | 44.00 | 49.81 | c | 60.75 | c | 69.12 | d | 77.21 | c | 84.92 | e | 78.26 | c | 57.53 | a | 42.06 | n | 39.48 | f | 62.37 | c | |
2012 | 37.71 | n | 41.14 | g | 44.58 | g | 58.43 | g | 64.10 | b | 69.11 | b | 83.27 | a | 86.60 | a | 78.88 | d | ----- | z | 50.00 | w | 37.57 | q | 76.39 | g |
2013 | 36.36 | q | ----- | z | ----- | z | 64.00 | u | 66.61 | h | 72.42 | d | 88.75 | g | 84.25 | g | 74.59 | h | 58.86 | j | 43.94 | n | ----- | z | 72.42 | k |
2014 | ----- | z | ----- | z | ----- | z | ----- | z | 70.19 | j | 74.35 | j | 87.88 | o | 86.71 | j | 77.67 | u | ----- | z | ----- | z | ----- | z | ----- | z |
2015 | 41.63 | d | 49.47 | i | 57.65 | n | 63.50 | x | 71.42 | e | 84.58 | d | 88.23 | a | 86.31 | e | 69.83 | x | 65.88 | n | 42.71 | m | 33.90 | k | 74.43 | g |
2016 | 33.53 | l | 46.32 | g | 49.90 | k | 65.29 | m | 68.54 | g | 76.87 | 83.04 | g | 86.27 | e | 71.72 | l | 55.16 | 49.86 | i | 32.25 | k | 72.77 | i | ||
2017 | 27.20 | f | 36.19 | g | 48.76 | n | 56.41 | h | 74.41 | d | 77.50 | b | 88.73 | a | 91.45 | k | 75.15 | j | 57.73 | e | 44.94 | n | 36.27 | p | 74.59 | h |
2018 | 41.86 | x | 43.40 | r | 46.40 | p | 56.32 | e | 73.86 | i | 74.84 | k | 89.12 | n | 85.67 | m | 73.26 | k | 59.62 | j | 45.52 | i | 36.77 | r | 56.32 | k |
2019 | 39.29 | q | 30.57 | n | 43.24 | b | 57.79 | a | 68.30 | d | 75.48 | g | 79.88 | f | 84.53 | n | 72.64 | p | 54.18 | i | 47.78 | u | 40.08 | s | 56.44 | i |
2020 | 39.26 | l | 46.86 | o | 49.50 | c | 64.94 | n | 66.53 | n | 73.58 | f | 80.75 | o | 85.78 | v | 76.55 | s | 65.65 | k | 44.00 | s | 42.23 | r | 49.50 | k |
2021 | 42.08 | r | 37.30 | r | 52.73 | t | 58.00 | t | 67.93 | p | 84.17 | f | 91.36 | i | 85.56 | m | 76.00 | i | 59.36 | i | 46.94 | n | 36.71 | j | ----- | z |
2022 | 37.26 | h | ----- | z | 53.04 | h | 49.05 | i | 60.65 | n | 72.42 | k | 87.95 | i | 90.59 | n | 79.60 | o | 68.53 | l | 39.35 | m | 32.40 | k | ----- | z |
2023 | 38.20 | k | 40.00 | l | 43.16 | l | 56.24 | i | 74.68 | l | 78.26 | k | 89.61 | m | 86.12 | n | 74.84 | k | 64.25 | w | ----- | z | ----- | z | ----- | z |
2024 | ----- | z | ----- | z | 62.38 | w | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 35.91 | 42.20 | 49.37 | 56.57 | 66.49 | 73.74 | 82.85 | 82.09 | 72.35 | 59.51 | 43.26 | 35.09 | 57.76 | |||||||||||||
S.D. | 4.07 | 2.62 | 3.55 | 3.65 | 3.36 | 3.71 | 3.72 | 3.69 | 4.51 | 3.30 | 3.68 | 3.78 | 1.01 | |||||||||||||
SKEW | -0.81 | 0.41 | -0.20 | 0.35 | -0.12 | 0.46 | 0.21 | -0.55 | -0.37 | 0.84 | -0.81 | -0.06 | 0.09 | |||||||||||||
MAX | 41.63 | 48.26 | 55.50 | 65.30 | 74.41 | 84.58 | 90.17 | 87.48 | 78.88 | 69.48 | 48.43 | 42.89 | 59.94 | |||||||||||||
MIN | 26.19 | 36.68 | 42.71 | 48.83 | 60.19 | 66.72 | 76.10 | 73.65 | 64.28 | 54.26 | 32.03 | 26.58 | 56.05 | |||||||||||||
YRS | 30 | 30 | 36 | 40 | 39 | 45 | 41 | 40 | 36 | 34 | 30 | 30 | 21 |