YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1966 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 64.92 | g | 61.97 | b | 55.80 | 39.35 | 28.28 | a | 19.97 | 41.07 | g | |||
1967 | 20.13 | 28.29 | 34.68 | 42.37 | 46.30 | a | 62.80 | 68.04 | c | 63.84 | 57.90 | 43.67 | a | 35.97 | 26.21 | c | 44.18 | |||||||||
1968 | 29.65 | 35.28 | 37.52 | 43.50 | 51.19 | 63.77 | 65.32 | 65.00 | a | 53.46 | d | 46.48 | 35.43 | 22.85 | d | 45.79 | ||||||||||
1969 | 29.86 | c | 30.70 | a | 31.97 | b | 44.77 | 53.12 | n | 61.65 | d | 68.47 | a | 67.74 | 59.27 | 49.10 | 34.86 | a | 30.37 | l | 47.84 | b | ||||
1970 | 26.83 | b | 32.67 | d | 36.68 | 42.56 | l | ----- | z | ----- | z | 69.17 | g | 64.57 | a | 49.59 | a | 28.07 | a | 31.27 | 30.26 | 37.49 | d | |||
1971 | 25.58 | 29.14 | 37.00 | 40.53 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 30.08 | q | ----- | z | 33.06 | h | ||||
1972 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 59.69 | a | ----- | z | 60.77 | 58.90 | 48.52 | 29.17 | 25.48 | 47.09 | f | |||||
1973 | 24.58 | 26.29 | 33.87 | ----- | z | ----- | z | ----- | z | 63.35 | 58.94 | 56.43 | 40.52 | 29.73 | 20.63 | a | 39.37 | c | ||||||||
1974 | 25.13 | 22.82 | 37.52 | 45.87 | 53.23 | 64.20 | 67.10 | 65.16 | 57.87 | 50.83 | b | 35.30 | 26.10 | 45.93 | ||||||||||||
1975 | 24.76 | b | 29.00 | 33.58 | 36.83 | 47.23 | 59.40 | 64.81 | 63.42 | 54.24 | a | 42.68 | 27.80 | 23.26 | 42.25 | |||||||||||
1976 | 22.10 | a | 30.00 | 35.52 | 43.37 | 51.42 | 62.97 | 63.48 | 61.94 | 56.33 | 40.94 | 27.66 | a | 20.71 | 43.04 | |||||||||||
1977 | 25.40 | a | 25.89 | 27.78 | d | 41.79 | a | 50.61 | 62.30 | 64.84 | 65.81 | 61.30 | c | 50.55 | b | 33.44 | c | 30.29 | 45.00 | |||||||
1978 | 27.83 | b | 27.92 | b | 37.32 | 43.20 | 51.06 | 64.27 | d | 66.24 | b | 64.28 | b | 57.96 | d | 47.06 | 39.97 | 25.72 | b | 46.07 | ||||||
1979 | 26.30 | a | 29.00 | a | 33.00 | b | 41.03 | a | 52.29 | 62.13 | 69.03 | a | 64.77 | 57.47 | 45.13 | 32.37 | 25.83 | b | 44.86 | |||||||
1980 | 29.29 | 34.10 | 36.32 | f | 41.80 | 52.76 | j | 65.73 | 66.84 | 64.13 | 56.97 | a | ----- | z | ----- | z | ----- | z | 51.27 | e | ||||||
1981 | ----- | z | 24.26 | a | ----- | z | 46.28 | e | 53.00 | c | 62.67 | 66.81 | 61.26 | 57.31 | a | 47.00 | 29.20 | 24.94 | 47.27 | b | ||||||
1982 | 23.45 | b | 30.17 | e | 36.83 | a | 43.52 | a | 48.52 | b | 57.89 | b | 63.40 | f | 60.92 | e | 54.34 | a | 37.55 | b | 28.93 | a | 27.21 | b | 40.85 | a |
1983 | 26.66 | b | 31.89 | a | 37.65 | k | 39.24 | a | 43.24 | j | 55.77 | 63.72 | b | 63.16 | l | 62.60 | o | 48.00 | b | 33.82 | b | 23.84 | 40.37 | d | ||
1984 | 24.63 | a | 24.35 | c | 34.19 | 41.07 | 56.59 | b | 63.23 | 62.97 | 61.56 | d | 48.88 | e | 39.92 | e | 28.83 | 32.21 | b | 43.20 | ||||||
1985 | 26.07 | b | 27.71 | 38.83 | b | 45.27 | 54.30 | a | 60.17 | a | 62.21 | b | 63.08 | f | 55.70 | 45.67 | a | 33.82 | b | 21.10 | 42.80 | a | ||||
1986 | 25.10 | 34.04 | 37.84 | 45.87 | 52.29 | 61.50 | l | 64.06 | 64.04 | h | 58.07 | a | 46.25 | c | 33.67 | 27.26 | 42.44 | b | ||||||||
1987 | 21.94 | 29.44 | a | 33.47 | a | 42.67 | 53.65 | 59.80 | 64.76 | f | 63.68 | f | 55.67 | 48.13 | 32.93 | a | 23.79 | c | 40.15 | b | ||||||
1988 | 24.87 | 29.48 | 34.30 | a | 41.47 | 52.90 | a | 62.20 | 65.52 | 65.35 | 54.77 | 48.50 | c | 33.10 | a | 25.12 | e | 44.80 | ||||||||
1989 | 25.44 | f | 29.50 | f | 35.29 | g | 46.17 | a | 52.70 | a | 60.29 | f | 65.84 | f | 64.52 | ----- | z | ----- | z | ----- | z | 23.03 | a | 46.61 | h | |
1990 | 21.73 | a | 28.21 | 39.97 | 47.57 | 53.13 | 67.47 | 65.87 | 63.23 | 60.74 | c | 45.23 | 36.70 | 27.35 | 46.43 | |||||||||||
1991 | 28.42 | 34.21 | 35.84 | 41.03 | 51.65 | 60.03 | 65.00 | 64.50 | a | 57.80 | 43.97 | 29.73 | 31.00 | a | 45.27 | |||||||||||
1992 | 27.87 | 29.28 | 35.71 | 40.70 | 51.55 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 37.02 | g | |||||
1993 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 53.00 | 40.19 | 31.43 | b | 29.70 | a | 38.58 | h | ||
1994 | 23.35 | 26.43 | 38.37 | a | 44.50 | 53.90 | a | 67.03 | 67.06 | 66.74 | 58.14 | a | ----- | z | 34.30 | 31.17 | a | 46.45 | a | |||||||
1995 | 27.83 | a | 35.22 | a | 41.74 | 41.39 | b | 50.58 | 61.20 | 63.30 | a | 65.23 | 59.93 | b | 44.16 | 35.97 | 28.20 | a | 46.23 | |||||||
1996 | 20.90 | 31.72 | 33.48 | 44.21 | b | 54.87 | 65.60 | 68.35 | 65.16 | 57.83 | 48.26 | 34.23 | 24.13 | 45.73 | ||||||||||||
1997 | 27.32 | 32.07 | 41.17 | a | 44.57 | 57.16 | 63.30 | 66.90 | 65.00 | 62.67 | 43.23 | 34.37 | 26.06 | 46.98 | ||||||||||||
1998 | 24.26 | 31.86 | 34.57 | a | 40.27 | 50.03 | 60.10 | a | 67.97 | 64.26 | 61.40 | 50.84 | 36.83 | 27.00 | a | 45.78 | ||||||||||
1999 | 26.39 | ----- | z | ----- | z | ----- | z | 52.91 | h | 63.60 | e | 67.00 | c | 65.56 | d | 58.91 | g | 39.75 | k | 32.17 | f | 22.22 | m | 55.64 | h | |
2000 | 25.80 | k | 29.83 | k | 35.95 | i | 45.70 | j | 56.58 | g | 65.85 | d | 66.96 | c | 65.10 | a | 58.55 | h | 46.22 | m | 31.26 | g | 25.79 | g | 65.97 | i |
2001 | 24.85 | k | 30.07 | m | 37.14 | j | 44.95 | j | 53.23 | e | 61.96 | e | 67.36 | c | 64.65 | e | 57.71 | f | 45.90 | j | 37.35 | g | 23.08 | f | 61.80 | h |
2002 | 23.42 | l | 27.53 | k | 34.76 | n | 49.52 | i | 51.91 | i | 66.22 | g | 67.10 | a | 67.20 | f | 58.95 | i | 49.33 | g | 32.75 | j | 26.27 | i | 67.10 | k |
2003 | 26.12 | g | 33.65 | k | 35.88 | g | 43.21 | k | 52.43 | h | 63.29 | f | 68.40 | a | 67.23 | a | 59.05 | i | 49.36 | i | 34.95 | k | 20.35 | n | 67.82 | j |
2004 | 30.25 | k | 28.95 | h | 41.08 | f | 46.85 | j | 54.70 | h | 61.46 | d | 65.70 | d | 64.30 | d | 56.65 | j | 49.06 | m | 36.91 | g | 26.67 | m | 63.82 | i |
2005 | 30.80 | k | 36.39 | j | 35.32 | i | 42.56 | l | 54.30 | h | 60.04 | f | 69.68 | c | 66.46 | c | 60.95 | h | 48.08 | g | 33.00 | h | 24.64 | i | 68.07 | j |
2006 | 24.71 | j | 30.24 | k | 37.00 | i | 44.85 | j | 54.04 | c | 64.08 | d | 68.07 | d | 67.21 | b | 57.28 | e | 46.65 | k | 33.41 | h | 22.00 | n | 62.13 | g |
2007 | 28.22 | m | 29.12 | l | 35.68 | l | 42.71 | m | 55.64 | i | 61.67 | i | 67.56 | d | 67.70 | d | 62.32 | e | 45.90 | j | 35.58 | k | 25.76 | j | 65.86 | i |
2008 | 25.21 | l | 27.44 | k | 31.53 | l | 37.67 | l | 50.95 | j | 64.64 | h | 66.85 | d | 65.42 | g | 57.15 | d | 43.95 | k | 30.32 | h | 25.59 | n | 62.00 | j |
2009 | 22.67 | j | 26.50 | p | 36.50 | k | 40.50 | n | 55.58 | e | 61.40 | j | 69.40 | a | 66.12 | e | 56.83 | g | 44.65 | k | 32.29 | p | 25.63 | l | 63.70 | i |
2010 | 24.38 | j | 29.68 | i | 32.26 | l | 44.17 | l | 51.40 | k | 64.13 | g | 68.08 | e | 66.67 | a | 61.20 | e | 45.79 | g | 27.43 | i | 25.28 | m | 65.31 | i |
2011 | 19.32 | l | 18.67 | j | 37.33 | m | 44.88 | m | 48.58 | l | 61.86 | i | 69.38 | b | 68.46 | e | 57.55 | h | 43.79 | l | 29.84 | k | 23.84 | l | 68.92 | j |
2012 | 24.21 | l | 27.61 | k | 32.71 | n | 45.00 | i | 50.76 | f | 63.05 | h | 66.73 | e | 67.00 | i | 57.95 | j | 44.92 | e | 34.53 | k | 22.74 | 44.80 | i | |
2013 | 22.16 | 22.43 | 33.94 | 41.37 | 51.29 | 65.97 | 67.97 | 66.90 | 61.10 | 43.42 | 35.17 | 25.03 | 44.73 | |||||||||||||
2014 | 21.29 | 29.54 | 36.39 | 43.10 | 48.55 | 65.93 | 69.06 | 66.48 | 62.03 | 47.42 | 33.41 | a | 30.90 | 46.18 | ||||||||||||
2015 | 28.06 | 33.04 | 39.81 | 45.30 | 53.19 | 66.60 | 69.90 | 69.03 | 64.37 | 53.42 | 36.23 | 25.26 | 48.68 | |||||||||||||
2016 | 27.23 | a | 28.97 | 38.58 | 44.73 | 52.30 | a | 65.97 | a | 71.45 | 66.03 | 63.07 | 52.06 | 40.90 | 31.19 | 48.54 | ||||||||||
2017 | 30.13 | 33.21 | 42.10 | 47.30 | 52.87 | 63.97 | 68.97 | 66.39 | 60.90 | 51.16 | 38.23 | 29.26 | 48.71 | |||||||||||||
2018 | 23.61 | 33.64 | 38.48 | 47.87 | 55.16 | 67.73 | 69.29 | 68.39 | 62.63 | 53.06 | 34.07 | 32.06 | 48.83 | |||||||||||||
2019 | 28.87 | 30.64 | 39.29 | 46.03 | 50.00 | 61.10 | 69.16 | 70.26 | 65.60 | 49.03 | 37.66 | a | 30.19 | 48.15 | ||||||||||||
2020 | 28.81 | 32.31 | 44.13 | 49.03 | 56.43 | a | 65.07 | 71.19 | 69.65 | 57.20 | 43.26 | 38.40 | 22.24 | b | 48.14 | |||||||||||
2021 | 24.87 | 28.75 | 37.65 | 47.20 | 56.42 | 67.20 | 68.55 | 68.71 | 61.31 | a | 48.35 | 34.80 | 33.29 | 48.09 | ||||||||||||
2022 | 25.87 | 25.46 | 33.03 | 45.87 | 53.23 | 67.93 | 69.68 | 68.68 | 62.00 | 48.35 | 33.30 | 30.32 | 46.98 | |||||||||||||
2023 | 28.16 | 31.25 | 38.35 | 43.53 | 55.03 | 62.17 | 71.81 | 68.71 | 63.30 | 52.71 | 39.53 | 26.13 | 48.39 | |||||||||||||
2024 | 27.74 | 32.52 | 40.45 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 33.57 | i | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 25.73 | 29.83 | 36.71 | 43.65 | 52.56 | 63.22 | 67.20 | 65.39 | 58.44 | 45.92 | 33.77 | 26.56 | 46.18 | |||||||||||||
S.D. | 2.65 | 3.29 | 3.25 | 2.68 | 2.52 | 2.84 | 2.28 | 2.49 | 3.66 | 4.94 | 3.45 | 3.57 | 1.86 | |||||||||||||
SKEW | -0.30 | -0.40 | -0.13 | -0.16 | -0.39 | -0.31 | -0.25 | -0.33 | -0.43 | -1.16 | -0.04 | 0.04 | -0.25 | |||||||||||||
MAX | 30.13 | 35.28 | 44.13 | 49.03 | 57.16 | 67.93 | 71.81 | 70.26 | 65.60 | 53.42 | 40.90 | 33.29 | 48.83 | |||||||||||||
MIN | 20.13 | 22.43 | 27.78 | 36.83 | 46.30 | 55.77 | 62.21 | 58.94 | 48.88 | 28.07 | 27.66 | 19.97 | 42.25 | |||||||||||||
YRS | 41 | 41 | 38 | 39 | 38 | 41 | 49 | 48 | 44 | 40 | 40 | 41 | 27 |