YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1952 | 35.23 | 42.79 | 45.55 | 63.37 | 70.32 | 72.55 | a | 83.53 | a | 82.97 | 78.90 | 72.42 | 46.43 | 37.55 | 60.97 | |||||||||||
1953 | 41.29 | 43.54 | 48.00 | 55.72 | a | 62.37 | a | 68.75 | b | 84.74 | 81.90 | 77.17 | 65.71 | 49.37 | 36.93 | a | 59.62 | |||||||||
1954 | 34.84 | 45.00 | 45.03 | a | 52.59 | a | 69.27 | a | 68.80 | 82.61 | 76.65 | 72.86 | a | 59.79 | b | 49.62 | a | 36.94 | 57.83 | |||||||
1955 | 34.77 | 36.29 | 38.29 | 48.50 | 60.97 | 74.83 | 79.48 | 84.87 | 73.03 | 59.37 | a | 35.43 | 34.23 | 55.01 | ||||||||||||
1956 | 36.00 | 34.93 | 44.17 | a | 60.83 | 67.48 | b | 72.47 | 85.41 | b | 81.97 | 75.27 | 55.77 | 43.74 | c | 39.93 | a | 58.16 | ||||||||
1957 | 28.45 | 39.75 | 46.40 | a | 56.10 | 69.74 | 72.29 | b | 82.29 | 80.65 | 80.00 | a | 57.93 | b | 42.58 | d | 38.26 | 57.87 | ||||||||
1958 | 37.81 | 46.89 | 48.00 | 54.13 | 77.83 | b | 76.86 | a | 84.74 | 87.73 | a | 71.62 | a | 64.13 | 41.72 | a | 40.32 | 60.98 | ||||||||
1959 | 38.31 | b | 38.36 | 43.26 | 53.60 | 58.35 | 76.00 | a | 84.81 | 79.00 | 65.63 | 55.77 | 41.80 | 37.53 | a | 56.04 | ||||||||||
1960 | 31.55 | 36.48 | 45.90 | 53.43 | 60.90 | 73.00 | 87.63 | a | 75.34 | b | 76.21 | b | 59.70 | a | 42.10 | 35.77 | 56.50 | |||||||||
1961 | 37.94 | 39.71 | 44.68 | 50.73 | 62.61 | 80.60 | 84.45 | 90.94 | 65.93 | 53.35 | 40.97 | 33.45 | 57.11 | |||||||||||||
1962 | 31.84 | 39.36 | 41.94 | 59.53 | 59.26 | 71.80 | 81.23 | 79.26 | 75.93 | b | 58.47 | a | 44.57 | 38.09 | h | 58.47 | a | |||||||||
1963 | 27.77 | 45.46 | 47.77 | 51.86 | a | 66.77 | 68.80 | 80.61 | 85.42 | 81.03 | a | 63.48 | 43.83 | 35.77 | 58.22 | |||||||||||
1964 | 34.97 | 39.55 | 40.71 | 49.33 | 59.42 | 68.60 | 83.35 | 75.81 | 66.03 | 60.19 | 42.50 | 32.94 | 54.45 | |||||||||||||
1965 | 35.80 | a | 38.61 | 44.35 | 57.13 | 62.03 | 70.17 | 83.55 | 78.42 | 63.80 | 64.61 | 47.27 | 35.65 | 56.78 | ||||||||||||
1966 | 34.97 | 39.39 | 45.87 | 55.60 | 69.32 | 67.27 | 80.45 | 81.77 | 77.13 | 56.84 | 44.53 | 37.39 | 57.54 | |||||||||||||
1967 | 36.39 | 41.25 | 42.94 | 50.83 | 62.32 | 73.90 | 85.94 | 88.84 | 80.97 | 55.68 | 44.97 | 33.52 | 58.13 | |||||||||||||
1968 | 34.68 | 45.14 | 50.93 | b | 53.48 | e | 61.68 | 69.60 | 85.16 | 77.84 | 67.70 | 55.00 | 41.80 | 31.74 | 56.23 | |||||||||||
1969 | 29.42 | 38.00 | 47.84 | 56.03 | 67.81 | 73.67 | 81.45 | 85.03 | 70.60 | 53.35 | 46.17 | 36.45 | 57.15 | |||||||||||||
1970 | 33.52 | 44.36 | 44.58 | 47.17 | 64.03 | 74.89 | b | 81.87 | 83.87 | 63.30 | 55.29 | 44.17 | 32.74 | 55.82 | ||||||||||||
1971 | 33.77 | 40.36 | 41.35 | 52.43 | 65.83 | a | 66.30 | 80.87 | 86.87 | 63.73 | 54.84 | 38.63 | 31.55 | 54.71 | ||||||||||||
1972 | 31.90 | a | 38.41 | 46.97 | 48.83 | 65.86 | b | 71.10 | 77.81 | 83.19 | 64.60 | 58.87 | 43.07 | a | 29.68 | 55.02 | ||||||||||
1973 | 33.81 | 43.43 | 47.10 | 55.03 | a | 66.03 | 70.17 | 83.00 | 82.94 | 69.90 | 56.65 | 37.30 | 37.03 | 56.86 | ||||||||||||
1974 | 31.32 | 40.21 | 44.74 | 53.10 | 59.23 | 77.03 | 78.48 | 80.19 | 75.97 | 63.81 | 45.03 | 36.13 | 57.10 | |||||||||||||
1975 | 34.74 | 39.32 | 43.58 | 47.33 | 59.19 | 68.47 | 85.03 | 75.48 | 74.80 | 54.87 | 42.47 | 37.70 | a | 55.25 | ||||||||||||
1976 | 38.40 | a | 39.00 | 43.48 | 53.80 | 67.39 | 70.20 | 80.81 | 77.71 | 77.17 | 62.35 | 47.53 | 36.62 | e | 57.87 | |||||||||||
1977 | 32.94 | 45.61 | 43.26 | 60.17 | 58.35 | 77.43 | 77.48 | 83.93 | a | 65.93 | 57.23 | 39.93 | 38.96 | g | 58.39 | a | ||||||||||
1978 | 37.69 | b | 40.75 | 51.32 | 52.33 | 59.77 | 73.63 | 79.32 | 76.19 | 67.40 | 62.74 | 37.97 | 29.74 | 55.74 | ||||||||||||
1979 | 25.58 | 37.68 | 50.03 | 49.80 | 65.00 | 73.90 | 82.61 | 83.52 | 76.90 | 61.48 | 42.10 | 37.84 | 57.20 | |||||||||||||
1980 | 31.48 | 41.69 | 42.84 | 59.48 | a | 64.67 | a | 68.13 | 79.42 | 75.90 | 69.83 | 61.97 | 45.13 | 38.03 | 56.55 | |||||||||||
1981 | 40.16 | 41.44 | a | 53.10 | 55.80 | 61.65 | 65.97 | 78.71 | 85.58 | 73.63 | 53.81 | 48.00 | 35.87 | 57.81 | ||||||||||||
1982 | 35.71 | j | 34.57 | 46.06 | 50.13 | 61.55 | 73.87 | 77.74 | 81.23 | 69.60 | 55.10 | 39.40 | 34.06 | 56.66 | a | |||||||||||
1983 | 38.74 | 42.82 | 48.97 | 55.05 | k | 65.87 | 70.45 | a | 74.87 | 82.97 | 66.13 | 57.90 | 43.17 | 28.00 | 56.35 | a | ||||||||||
1984 | 35.71 | 41.28 | 44.97 | 52.10 | a | 58.03 | 70.57 | 82.90 | 83.84 | 70.87 | 54.65 | 39.50 | 30.23 | a | 55.39 | |||||||||||
1985 | 31.16 | 33.43 | 45.42 | 56.43 | 66.52 | 71.33 | 87.71 | 75.16 | 62.48 | a | 52.63 | a | 30.10 | a | 30.53 | a | 53.58 | |||||||||
1986 | 33.35 | 33.11 | 45.71 | 55.27 | 64.38 | b | 78.79 | a | 73.70 | a | 87.24 | b | 62.28 | a | 61.41 | d | 39.00 | 34.15 | d | 55.70 | ||||||
1987 | 34.06 | 39.96 | 46.26 | 64.37 | c | 68.24 | b | 75.30 | c | 76.87 | 77.35 | 77.24 | a | 66.87 | a | 45.90 | 35.54 | e | 59.00 | |||||||
1988 | 33.83 | a | 43.14 | 45.03 | 57.97 | 62.81 | 71.83 | a | 77.97 | a | 81.37 | d | 71.69 | a | 64.11 | d | 42.15 | d | 34.61 | c | 57.21 | |||||
1989 | 33.71 | 32.82 | 42.94 | 56.32 | b | 60.00 | c | 73.31 | a | 81.11 | d | 75.23 | a | 72.22 | c | 55.96 | c | 44.54 | d | 35.60 | a | 55.31 | ||||
1990 | 37.52 | 38.12 | b | 49.97 | 58.14 | h | 60.71 | 69.70 | 80.79 | c | 79.84 | 80.16 | e | 53.77 | 40.62 | f | 28.41 | d | 57.90 | b | ||||||
1991 | 33.41 | d | 44.46 | 43.91 | h | 55.26 | g | 60.38 | b | 66.80 | 79.79 | b | 83.33 | a | 75.42 | f | 59.00 | 42.30 | j | 37.28 | b | 58.06 | d | |||
1992 | 36.71 | 46.69 | 57.84 | f | 59.78 | l | 69.33 | j | 77.11 | b | 75.36 | c | 80.04 | c | 71.47 | 62.14 | c | 41.21 | f | 32.27 | a | 60.22 | d | |||
1993 | 31.60 | a | 36.68 | 47.61 | 51.80 | 68.14 | j | 68.07 | a | 67.83 | a | 76.71 | c | 70.72 | e | 59.96 | c | 38.63 | c | 34.42 | 53.09 | a | ||||
1994 | 37.60 | a | 36.82 | 49.65 | 56.73 | h | 69.00 | d | 71.23 | 85.00 | 85.32 | 76.78 | g | 56.45 | 34.88 | e | 32.97 | a | 55.89 | b | ||||||
1995 | 33.97 | 40.86 | 45.83 | a | 53.14 | b | 64.72 | f | 67.62 | a | 78.31 | b | 75.15 | e | 75.15 | j | 50.70 | a | 42.43 | 35.00 | b | 52.30 | b | |||
1996 | 32.84 | 36.43 | a | 45.17 | b | 52.82 | b | 57.71 | n | 73.15 | j | 84.39 | c | 81.04 | e | 69.80 | o | 52.95 | k | 39.46 | f | 32.27 | i | 55.45 | f | |
1997 | 33.13 | 39.77 | b | 41.97 | a | 48.55 | j | 59.08 | r | 69.67 | c | 77.53 | a | 84.04 | e | 70.00 | j | 54.60 | k | 46.62 | f | 33.74 | 54.26 | e | ||
1998 | 34.55 | 42.50 | b | 46.77 | 53.48 | i | 65.40 | f | 68.60 | 85.79 | b | 84.23 | e | 75.53 | o | 55.83 | m | 41.39 | g | 31.55 | 56.28 | e | ||||
1999 | 34.42 | 36.15 | a | 47.38 | e | 49.17 | l | 59.00 | u | 68.61 | b | 77.11 | d | 83.82 | c | 73.53 | o | 59.53 | n | 46.40 | o | 33.11 | c | 54.37 | e | |
2000 | 34.50 | c | 38.45 | 45.32 | 57.25 | n | 64.88 | n | 69.80 | e | 79.63 | d | 83.54 | e | 65.40 | j | 56.20 | p | 36.06 | n | 33.11 | l | 58.54 | f | ||
2001 | 33.58 | 37.37 | a | 45.62 | e | 47.88 | d | 67.62 | j | 68.60 | j | 79.90 | a | 83.81 | d | 76.57 | i | 55.56 | f | 45.81 | n | 34.64 | t | 54.69 | f | |
2002 | 34.35 | n | 39.00 | r | 44.43 | x | 51.50 | p | 65.36 | t | 76.40 | o | 84.11 | d | 77.32 | f | 73.22 | c | 55.27 | a | 42.41 | a | 35.25 | c | 58.05 | g |
2003 | 36.74 | 37.11 | a | 45.58 | g | 53.86 | a | 59.54 | c | 76.68 | k | 86.65 | n | 84.14 | j | 72.46 | b | 60.87 | a | 35.52 | a | 34.23 | 48.79 | d | ||
2004 | 31.50 | c | 39.69 | 49.13 | 59.44 | e | 63.42 | 77.58 | f | 83.58 | 81.06 | 66.20 | 55.81 | 40.80 | 35.16 | 55.07 | a | |||||||||
2005 | 34.90 | 43.57 | 50.42 | 55.38 | a | 64.35 | 67.68 | b | 84.14 | i | 82.77 | 69.08 | e | ----- | z | ----- | z | 29.77 | 55.33 | c | ||||||
2006 | 36.03 | a | 34.25 | l | 46.18 | n | 54.17 | 66.90 | 73.59 | a | 86.87 | 82.55 | b | 72.60 | 57.03 | a | 40.27 | 32.39 | 60.24 | b | ||||||
2007 | 29.45 | b | 36.89 | 47.00 | 54.40 | 64.74 | 71.07 | 88.97 | 81.81 | 72.07 | 53.55 | 42.15 | d | 31.56 | d | 56.14 | ||||||||||
2008 | 29.35 | 38.14 | 40.68 | 46.90 | 61.71 | 68.53 | 81.39 | 80.23 | 70.76 | a | 55.94 | 43.10 | 27.85 | e | 53.71 | |||||||||||
2009 | 31.58 | 39.07 | 39.06 | 51.77 | 64.65 | 72.40 | 82.42 | 80.81 | 77.90 | 53.47 | n | ----- | z | 27.84 | 56.75 | b | ||||||||||
2010 | 36.37 | d | 41.04 | 50.10 | a | 52.93 | 58.35 | 67.57 | 79.90 | ----- | z | 68.17 | 56.90 | 42.57 | g | 32.35 | 54.37 | b | ||||||||
2011 | 31.71 | 32.50 | 42.45 | 44.83 | 59.16 | 66.73 | 78.71 | 85.32 | 77.97 | 56.03 | 38.70 | 33.74 | 53.99 | |||||||||||||
2012 | 38.67 | v | 37.83 | 41.94 | 55.93 | 62.32 | 70.43 | 84.52 | 85.03 | b | 76.47 | 55.26 | 52.86 | w | 34.26 | 60.40 | b | |||||||||
2013 | 30.33 | a | 39.00 | x | 50.17 | s | 50.32 | h | 65.03 | a | 70.36 | b | 86.35 | 85.95 | l | 78.25 | n | 55.31 | b | 44.40 | t | 30.00 | u | 61.48 | g | |
2014 | 38.00 | q | ----- | z | 49.71 | x | 55.92 | r | 71.50 | q | 71.07 | o | 89.63 | l | 85.58 | s | 76.36 | b | 68.27 | p | 46.36 | s | 37.80 | u | 76.36 | k |
2015 | 40.71 | x | 48.56 | s | 47.82 | t | 63.43 | w | 70.43 | q | 86.11 | u | ----- | z | ----- | z | ----- | z | 70.56 | v | ----- | z | 36.88 | w | ----- | z |
2016 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 80.17 | y | 88.40 | u | ----- | z | 57.44 | v | ----- | z | ----- | z | ----- | z |
2017 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2018 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 68.37 | k | 81.73 | i | 81.13 | h | 67.52 | i | 55.22 | h | 41.80 | t | 34.57 | x | ----- | z |
2019 | 33.80 | u | 25.50 | x | 43.38 | r | 50.00 | u | 67.50 | y | 71.58 | k | 77.92 | g | 81.95 | j | 67.32 | e | 47.50 | i | ----- | z | ----- | z | 67.32 | k |
2020 | ----- | z | 27.25 | y | ----- | z | ----- | z | ----- | z | 63.42 | r | 82.25 | o | 82.60 | u | 70.00 | j | 52.95 | k | 46.20 | y | ----- | z | ----- | z |
2021 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 86.90 | t | 89.52 | h | 79.81 | j | 70.94 | n | 56.12 | n | 38.75 | v | ----- | z | ----- | z |
2022 | ----- | z | ----- | z | ----- | z | ----- | z | 66.83 | y | 67.60 | t | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 34.06 | 39.73 | 45.63 | 53.84 | 63.71 | 71.37 | 81.47 | 81.63 | 71.82 | 58.30 | 42.15 | 34.16 | 56.72 | |||||||||||||
S.D. | 3.08 | 3.49 | 3.13 | 4.14 | 4.00 | 3.37 | 3.84 | 3.78 | 5.19 | 4.23 | 3.87 | 3.05 | 1.78 | |||||||||||||
SKEW | -0.21 | 0.05 | 0.02 | 0.26 | 0.86 | 0.62 | -0.70 | -0.06 | -0.07 | 0.90 | -0.57 | -0.31 | 0.43 | |||||||||||||
MAX | 41.29 | 46.89 | 53.10 | 64.37 | 77.83 | 80.60 | 88.97 | 90.94 | 81.03 | 72.42 | 49.62 | 40.32 | 60.98 | |||||||||||||
MIN | 25.58 | 32.50 | 38.29 | 44.83 | 58.03 | 65.97 | 67.83 | 75.15 | 62.28 | 50.70 | 30.10 | 27.84 | 53.58 | |||||||||||||
YRS | 59 | 59 | 56 | 51 | 52 | 57 | 60 | 58 | 54 | 54 | 48 | 56 | 37 |