YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1966 | 23.35 | 35.32 | 37.74 | 47.33 | 49.28 | f | 62.40 | 63.39 | 57.80 | a | 53.55 | a | 42.48 | 34.80 | 32.35 | 44.59 | a | |||||||||
1967 | 31.55 | 35.25 | 33.42 | ----- | z | 53.52 | 60.97 | 61.03 | a | 61.29 | 54.37 | 47.13 | 38.20 | 34.55 | i | 47.67 | b | |||||||||
1968 | 28.68 | 32.36 | a | 39.20 | a | 41.39 | b | 55.35 | 59.35 | d | 63.17 | a | 63.17 | b | 53.23 | 44.16 | 38.93 | c | 30.27 | a | 45.77 | |||||
1969 | 20.48 | 32.71 | 36.68 | 45.33 | 53.96 | c | 62.41 | a | 58.67 | a | 57.12 | e | 54.25 | b | 48.23 | 38.57 | 39.21 | b | 45.63 | |||||||
1970 | 29.52 | 38.50 | 41.77 | 45.33 | 51.24 | b | 56.37 | c | 58.37 | d | 57.20 | a | 50.96 | b | 44.23 | 34.86 | a | 29.61 | 44.83 | |||||||
1971 | 23.23 | 32.75 | 34.10 | 41.80 | 46.00 | 58.28 | a | 61.55 | b | 59.43 | c | 51.41 | c | 42.83 | a | 36.20 | 27.81 | 42.95 | ||||||||
1972 | 24.90 | a | 26.97 | 31.61 | 38.30 | 48.27 | a | 56.24 | a | 65.87 | 59.39 | 53.03 | 44.16 | 39.20 | 31.57 | a | 43.29 | |||||||||
1973 | 28.90 | 32.32 | 39.10 | 43.08 | e | 52.48 | h | ----- | z | ----- | z | 57.75 | c | 53.83 | a | 43.67 | a | 31.19 | i | 35.11 | v | 42.66 | e | |||
1974 | 26.32 | i | 34.96 | 35.26 | 44.00 | 53.30 | d | 57.97 | 59.80 | p | 60.97 | a | 57.21 | k | 47.23 | a | 39.57 | 37.19 | 45.61 | c | ||||||
1975 | ----- | z | 29.08 | d | 36.10 | 42.96 | b | 51.58 | g | 55.41 | c | 59.21 | g | 59.14 | c | 53.58 | d | 45.52 | 34.79 | a | ----- | z | 44.57 | d | ||
1976 | 34.35 | e | 32.59 | b | ----- | z | 45.34 | a | 49.90 | a | 57.63 | 62.89 | c | 60.81 | e | 54.15 | d | 45.90 | b | 42.23 | 37.39 | 47.56 | a | |||
1977 | 37.83 | a | 43.29 | 39.73 | a | 46.50 | 54.61 | 60.48 | e | 64.18 | c | 63.10 | a | 57.09 | h | 46.38 | b | 34.41 | a | 28.29 | 47.16 | a | ||||
1978 | 32.63 | a | 38.37 | a | 39.90 | b | 48.07 | 53.67 | d | 60.50 | b | 59.66 | b | 62.46 | c | 53.96 | d | 47.30 | a | 35.74 | c | 34.19 | 47.20 | |||
1979 | 29.94 | 23.25 | 40.16 | 46.40 | 53.03 | 57.43 | b | 62.48 | b | 64.37 | a | 55.59 | c | 49.68 | 41.70 | 32.17 | b | 46.35 | ||||||||
1980 | 27.77 | 38.62 | 38.77 | 46.54 | b | 55.39 | 61.07 | 61.42 | 60.84 | 54.54 | f | 47.97 | 41.70 | 29.43 | a | 46.32 | a | |||||||||
1981 | 40.35 | 36.19 | a | 43.83 | a | 45.31 | a | 58.03 | 62.43 | b | 62.55 | 62.26 | 54.53 | 46.84 | 40.34 | a | 34.48 | 48.93 | ||||||||
1982 | 25.23 | 29.48 | a | 37.28 | b | 43.30 | 50.86 | b | 63.00 | b | 62.19 | 61.00 | b | 54.41 | a | 46.70 | a | 35.21 | b | 36.81 | 45.46 | |||||
1983 | 34.40 | a | 38.00 | b | 40.77 | a | 48.64 | b | 55.04 | c | 62.89 | c | 65.71 | 60.52 | b | 53.79 | b | 46.24 | b | 38.10 | a | 28.94 | 47.75 | |||
1984 | 35.84 | 38.89 | b | 42.19 | 50.52 | a | 57.61 | c | 60.13 | 61.20 | a | 60.79 | b | 54.87 | 45.89 | c | 36.52 | e | 30.93 | b | 47.95 | |||||
1985 | 38.29 | 31.00 | 38.23 | a | 42.66 | a | 51.77 | 55.93 | c | 62.75 | o | 59.44 | m | 56.80 | t | 44.84 | f | 28.04 | g | 35.26 | h | 42.98 | f | |||
1986 | 36.13 | p | 33.39 | e | 37.42 | g | 42.61 | b | 52.34 | b | 60.07 | b | 62.04 | f | 59.15 | d | 55.97 | 48.43 | a | 35.75 | f | 36.87 | h | 50.28 | e | |
1987 | 35.86 | b | ----- | z | 36.15 | d | 47.50 | b | 52.30 | h | 58.35 | g | 66.57 | c | 65.45 | i | 52.93 | c | 47.33 | v | 40.00 | w | 37.10 | a | 46.02 | f |
1988 | 33.68 | c | 36.54 | a | 41.57 | a | 47.77 | 54.32 | ----- | z | 61.16 | 59.90 | 54.10 | 47.23 | 41.46 | f | 34.68 | f | 48.47 | c | ||||||
1989 | 28.87 | 31.04 | b | 37.32 | 50.97 | 56.45 | 61.83 | 67.19 | 62.74 | 57.37 | 45.61 | 35.62 | a | 38.83 | a | 47.82 | ||||||||||
1990 | 30.94 | 30.89 | 40.00 | 50.33 | 57.94 | 61.53 | 66.10 | 63.42 | 55.57 | 44.43 | a | 33.15 | d | 29.87 | a | 47.01 | ||||||||||
1991 | 30.19 | 35.56 | a | 36.23 | 46.57 | 55.97 | 62.37 | 62.03 | 59.81 | 54.27 | 43.68 | 38.44 | l | 34.84 | 47.41 | a | ||||||||||
1992 | 37.55 | 36.00 | 40.30 | a | 47.63 | 52.42 | 61.73 | 61.71 | 60.48 | 50.50 | 42.44 | f | ----- | z | 32.57 | a | 48.09 | b | ||||||||
1993 | 30.90 | 35.22 | a | 39.58 | 49.70 | 61.13 | h | 63.70 | 66.84 | 66.45 | k | 55.68 | b | 50.81 | o | 40.00 | f | 39.29 | c | 47.61 | d | |||||
1994 | 32.90 | a | 25.95 | f | 38.84 | 49.08 | f | 55.75 | o | ----- | z | 62.22 | v | 67.48 | h | ----- | z | 45.73 | i | 33.66 | a | 33.96 | c | 34.84 | h | |
1995 | 32.59 | d | 27.94 | k | 36.27 | a | ----- | z | 59.16 | f | 61.79 | b | 64.32 | l | 61.79 | g | 59.15 | j | 46.91 | t | ----- | z | 29.48 | b | 40.03 | h |
1996 | 24.00 | a | ----- | z | ----- | z | 47.74 | g | 59.39 | h | ----- | z | 66.00 | i | 61.35 | e | 49.62 | v | ----- | z | ----- | z | 31.10 | a | 38.82 | i |
1997 | 30.65 | n | ----- | z | ----- | z | 49.00 | g | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 39.38 | f | 38.84 | 38.84 | k | |
1998 | ----- | z | 41.67 | a | 42.80 | a | 50.48 | e | 58.48 | f | 64.07 | 64.67 | a | 61.61 | 55.10 | 48.55 | ----- | z | ----- | z | 53.62 | d | ||||
1999 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 54.32 | b | 46.89 | d | 39.37 | 39.00 | c | 44.89 | h | |
2000 | 31.29 | 37.19 | m | 40.88 | g | 49.56 | l | 55.52 | f | 62.46 | b | 62.86 | b | ----- | z | 55.41 | c | 46.77 | a | 41.78 | c | 36.03 | a | 48.09 | e | |
2001 | 39.82 | c | 33.53 | i | ----- | z | 48.30 | 53.33 | a | 62.48 | c | 62.23 | e | 63.60 | a | 55.81 | c | 46.29 | 38.74 | c | 32.75 | c | 50.34 | b | ||
2002 | 35.90 | a | 35.29 | d | 36.60 | a | 44.36 | e | 54.34 | b | 60.35 | d | 61.33 | g | 61.62 | e | 56.43 | b | 49.04 | d | 44.39 | g | 37.26 | 47.12 | b | |
2003 | 36.52 | j | 37.00 | d | 38.50 | e | 51.17 | a | 57.88 | f | 60.18 | b | 65.63 | a | 63.75 | c | 53.93 | c | 49.27 | a | 36.78 | c | 36.86 | c | 49.31 | b |
2004 | 30.00 | a | 40.75 | i | 39.90 | j | 47.93 | b | 60.68 | i | 66.11 | b | 66.05 | j | 68.90 | b | 55.93 | 47.97 | 40.48 | a | 38.39 | 49.46 | d | |||
2005 | 31.72 | b | 35.37 | a | 42.68 | c | 51.55 | a | 62.28 | b | 64.70 | c | 65.45 | 65.10 | b | 57.36 | b | 47.58 | e | 40.90 | a | 39.17 | a | 50.32 | ||
2006 | 35.87 | 35.68 | 35.87 | 46.86 | b | 54.39 | c | 62.22 | c | 64.21 | c | 59.25 | c | 55.80 | 47.13 | 28.23 | 36.87 | 46.87 | ||||||||
2007 | 33.63 | a | 33.04 | d | 33.40 | a | 45.50 | 51.75 | c | 60.85 | d | 63.26 | d | 64.55 | 56.17 | a | 46.10 | a | 40.54 | b | 32.13 | 46.74 | ||||
2008 | 32.00 | 33.28 | 40.33 | a | 45.00 | b | 54.64 | c | 57.70 | c | 58.27 | a | 60.57 | c | 53.30 | c | 46.28 | b | 39.83 | a | 30.74 | 45.99 | ||||
2009 | 29.93 | b | 33.56 | a | 35.68 | 45.93 | a | 56.35 | e | 58.83 | 63.58 | 58.52 | 53.33 | 46.16 | ----- | z | 31.90 | 46.71 | a | |||||||
2010 | 34.73 | a | 38.33 | a | ----- | z | 45.90 | t | 54.81 | 57.37 | 56.69 | b | 58.58 | 55.79 | a | ----- | z | 38.57 | 31.23 | a | 47.34 | c | ||||
2011 | 32.61 | ----- | z | 42.09 | t | 44.27 | 51.18 | c | ----- | z | 59.53 | a | 56.19 | 53.50 | 45.74 | 33.70 | 36.26 | 45.89 | c | |||||||
2012 | 29.90 | 36.97 | 37.87 | 47.80 | 47.26 | 55.17 | 57.23 | 56.83 | a | 52.47 | 43.16 | 35.03 | 29.81 | 44.12 | ||||||||||||
2013 | 33.77 | 37.14 | 34.58 | 40.23 | 50.97 | a | 60.30 | ----- | z | 60.45 | 54.60 | 47.55 | 34.77 | 30.61 | 44.09 | a | ||||||||||
2014 | 36.61 | 30.36 | c | 38.00 | a | 46.50 | 58.42 | 57.30 | 59.52 | 60.47 | a | 54.33 | 47.16 | ----- | z | 36.68 | 47.76 | a | ||||||||
2015 | 37.29 | 35.57 | 40.55 | 46.03 | 60.61 | 63.25 | b | 59.84 | 60.45 | 53.47 | 47.03 | ----- | z | 36.94 | 49.18 | a | ||||||||||
2016 | 39.06 | 40.41 | 44.29 | 48.63 | 56.20 | a | 60.00 | 62.74 | 61.48 | 54.57 | 46.58 | 40.40 | 31.81 | 48.85 | ||||||||||||
2017 | 32.82 | n | 36.89 | a | 34.24 | f | 48.90 | 53.13 | 56.07 | 58.06 | 59.29 | 53.97 | 44.68 | 34.50 | 33.90 | 47.94 | b | |||||||||
2018 | 34.26 | 31.71 | 38.13 | 45.90 | ----- | z | 57.73 | 62.74 | 59.16 | 56.93 | 48.26 | 40.40 | ----- | z | 47.52 | b | ||||||||||
2019 | 34.00 | 30.79 | 42.87 | 47.23 | 55.68 | 60.77 | 62.74 | 62.61 | 55.63 | 44.65 | 40.57 | 37.39 | 47.91 | |||||||||||||
2020 | 28.62 | g | 34.14 | 36.52 | 43.50 | 56.29 | ----- | z | 60.97 | ----- | z | ----- | z | ----- | z | 35.43 | ----- | z | 44.47 | f | ||||||
2021 | ----- | z | 30.54 | ----- | z | ----- | z | ----- | z | 59.63 | ----- | z | 60.10 | ----- | z | ----- | z | 36.07 | a | ----- | z | 46.58 | h | |||
2022 | ----- | z | ----- | z | ----- | z | ----- | z | 54.52 | ----- | z | ----- | z | ----- | z | 54.73 | 47.52 | f | ----- | z | ----- | z | 54.62 | j | ||
2023 | 38.03 | a | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 54.00 | b | 46.65 | ----- | z | ----- | z | 46.23 | i | |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 32.24 | 34.48 | 38.43 | 46.21 | 54.08 | 60.24 | 62.29 | 60.84 | 54.43 | 46.33 | 37.49 | 33.96 | 46.59 | |||||||||||||
S.D. | 4.64 | 3.81 | 2.95 | 2.96 | 3.25 | 2.64 | 2.69 | 2.43 | 1.47 | 1.73 | 3.09 | 3.52 | 1.89 | |||||||||||||
SKEW | -0.48 | -0.31 | -0.06 | -0.34 | -0.09 | -0.15 | -0.13 | 0.66 | -0.34 | -0.36 | -0.53 | 0.00 | -0.18 | |||||||||||||
MAX | 40.35 | 43.29 | 44.29 | 51.55 | 62.28 | 66.11 | 67.19 | 68.90 | 57.37 | 49.68 | 42.23 | 39.29 | 50.32 | |||||||||||||
MIN | 20.48 | 23.25 | 31.61 | 38.30 | 46.00 | 55.17 | 56.69 | 56.19 | 50.50 | 42.48 | 28.23 | 27.81 | 42.95 | |||||||||||||
YRS | 47 | 46 | 44 | 47 | 41 | 47 | 42 | 47 | 48 | 46 | 40 | 46 | 20 |