YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1965 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 56.78 | 54.71 | ----- | z | 32.85 | a | 48.11 | i | ||
1966 | 34.03 | a | 33.05 | 41.02 | 48.93 | 58.76 | 61.38 | 69.97 | 71.02 | a | 66.23 | 50.03 | b | 42.88 | 36.98 | b | 51.19 | |||||||||
1967 | 38.03 | b | 38.52 | 39.74 | 43.48 | 55.19 | 65.78 | 74.96 | q | 73.90 | a | 66.66 | a | 50.39 | 39.40 | 30.10 | 49.20 | a | ||||||||
1968 | 31.24 | 38.90 | 43.87 | 43.80 | 53.95 | 61.62 | 69.64 | f | 64.47 | 60.50 | 47.37 | 37.00 | a | 28.85 | 46.51 | a | ||||||||||
1969 | 27.66 | 32.98 | 40.66 | 48.02 | 57.97 | 63.83 | a | 66.75 | g | 67.17 | a | 60.78 | a | 46.10 | 40.35 | 35.02 | a | 47.32 | a | |||||||
1970 | 35.24 | 39.48 | a | 39.07 | a | 41.87 | 54.03 | 63.72 | a | 69.85 | 70.85 | 54.23 | 45.69 | 38.52 | 29.98 | 48.55 | ||||||||||
1971 | 33.27 | 36.79 | 37.03 | 46.02 | 56.10 | 58.45 | 68.87 | 73.68 | 55.67 | 46.50 | 38.52 | 30.18 | a | 48.42 | ||||||||||||
1972 | 28.15 | a | 34.93 | a | 43.34 | 43.08 | 56.48 | 62.52 | 68.95 | 70.25 | a | 55.38 | a | 48.98 | 39.12 | b | 26.32 | 48.13 | ||||||||
1973 | 28.58 | 37.34 | 42.53 | a | 47.17 | a | 56.73 | 64.40 | 72.26 | 69.05 | 59.97 | a | ----- | z | ----- | z | 37.55 | a | 51.56 | b | ||||||
1974 | 26.56 | 36.68 | 40.39 | 46.13 | 51.73 | 66.57 | 68.80 | a | 68.95 | a | 63.04 | b | 49.53 | 41.50 | a | 32.65 | a | 49.38 | ||||||||
1975 | 29.77 | 32.59 | 38.16 | 41.08 | 52.42 | 59.38 | a | 72.77 | 64.50 | 60.38 | 50.02 | 39.03 | 35.47 | 47.97 | ||||||||||||
1976 | 32.56 | 34.24 | 37.58 | 45.02 | a | 56.47 | 58.98 | 70.24 | 63.65 | a | 62.82 | 50.26 | 41.28 | a | 33.73 | a | 48.90 | |||||||||
1977 | 25.31 | 38.74 | a | 38.37 | 51.47 | 50.08 | 66.72 | 68.81 | 70.85 | a | 57.77 | 49.87 | a | 38.19 | a | 36.72 | a | 49.41 | ||||||||
1978 | 36.76 | 37.19 | d | 46.37 | 47.26 | a | 52.55 | 63.45 | 69.03 | b | 65.88 | a | 59.42 | d | 51.15 | a | 33.28 | 25.19 | b | 48.96 | ||||||
1979 | 19.84 | b | 34.54 | c | 41.42 | 45.93 | 56.32 | 63.05 | a | 67.12 | r | 69.70 | a | 62.97 | 52.96 | c | 35.45 | 37.81 | 47.27 | a | ||||||
1980 | 27.80 | a | 38.97 | 39.61 | 50.29 | a | 54.42 | 58.68 | 68.97 | a | 64.81 | b | 61.02 | f | 50.82 | a | 41.38 | a | 36.17 | b | 48.36 | a | ||||
1981 | 36.73 | a | 36.50 | 42.23 | 47.70 | 53.68 | 60.87 | 67.76 | 72.18 | 61.15 | 48.06 | 41.15 | 34.74 | b | 50.23 | |||||||||||
1982 | 29.16 | c | 34.70 | c | 40.11 | 43.26 | c | 53.40 | e | 63.88 | 67.58 | 69.15 | d | 58.30 | c | 48.16 | c | 36.45 | b | 30.22 | d | 47.86 | ||||
1983 | 35.60 | b | 39.56 | a | 44.02 | a | 44.94 | d | 55.04 | d | 60.76 | c | 65.25 | c | 71.07 | b | 57.70 | c | 50.77 | a | 40.96 | d | 25.69 | b | 49.28 | |
1984 | 27.48 | c | 31.24 | 39.56 | 43.65 | 49.92 | 58.07 | 68.37 | a | 68.95 | 53.48 | h | 43.63 | e | 37.50 | a | 26.20 | a | 44.96 | a | ||||||
1985 | 23.26 | b | 26.52 | e | 35.02 | d | 47.84 | e | 54.26 | 62.20 | 74.42 | 64.46 | d | 51.76 | e | 44.33 | e | 26.38 | a | 21.34 | b | 44.32 | ||||
1986 | 35.46 | c | 37.42 | c | 45.00 | b | 45.93 | c | 54.54 | c | 66.97 | 64.72 | a | 72.40 | b | 54.93 | b | 49.63 | 37.98 | b | 32.40 | b | 49.78 | |||
1987 | 28.88 | e | 37.46 | c | 42.48 | 52.14 | a | 56.68 | c | 63.68 | 66.87 | 65.93 | b | 62.12 | e | 51.52 | b | 40.60 | f | 31.53 | 50.85 | a | ||||
1988 | 29.28 | h | 34.00 | e | 40.16 | b | 48.32 | b | 54.74 | d | 62.81 | a | 69.81 | b | 68.73 | c | 60.68 | b | 55.86 | i | 39.60 | a | 29.06 | e | 50.79 | b |
1989 | 28.57 | d | 23.08 | b | 38.95 | b | 49.72 | 54.05 | b | 64.72 | 70.57 | i | 64.88 | a | 59.29 | a | 47.96 | f | 40.35 | c | 34.33 | e | 45.79 | b | ||
1990 | 34.88 | c | 33.12 | c | 41.88 | b | 51.90 | a | 52.09 | b | 61.24 | a | 71.28 | a | 69.61 | c | 66.55 | b | 46.41 | d | 39.85 | d | 28.19 | j | 51.71 | a |
1991 | 27.75 | e | 41.36 | j | 38.70 | k | 44.59 | m | 50.50 | g | 57.91 | b | 68.64 | c | 70.98 | b | 62.22 | e | 49.17 | e | 39.64 | e | 36.66 | c | 51.62 | d |
1992 | 35.07 | h | 41.28 | f | 45.69 | d | 49.24 | e | 59.50 | a | 67.42 | 67.10 | b | 68.72 | b | 57.79 | d | 51.90 | b | 35.54 | c | 26.09 | h | 55.88 | c | |
1993 | 23.08 | f | 26.69 | d | 39.24 | b | 45.27 | b | 58.98 | d | 58.67 | 60.34 | 64.17 | e | 59.59 | a | 51.00 | c | 32.95 | b | 33.15 | a | 48.19 | a | ||
1994 | 36.69 | b | 31.92 | c | 43.15 | a | 49.31 | d | 56.77 | a | 60.68 | b | 71.16 | c | 71.29 | b | 62.48 | b | 49.21 | g | 34.02 | g | 32.52 | d | 51.60 | b |
1995 | 34.31 | e | 39.10 | d | 40.79 | b | 46.00 | c | 55.48 | b | 59.89 | c | 69.25 | c | 66.27 | e | 63.40 | a | 46.02 | e | 42.44 | d | 34.84 | b | 49.82 | |
1996 | 33.44 | f | 37.80 | f | 42.48 | 47.48 | 51.87 | 61.23 | 70.26 | b | 67.67 | a | 57.60 | a | 48.53 | a | 39.47 | 33.07 | d | 51.97 | b | |||||
1997 | 32.09 | d | 34.03 | j | 42.34 | c | 43.87 | 57.26 | b | 61.08 | 68.64 | c | 71.16 | b | 62.88 | a | 48.87 | e | 41.19 | c | 32.72 | d | 51.10 | a | ||
1998 | 35.60 | e | 38.90 | c | 41.93 | d | 46.37 | c | 53.98 | d | 60.41 | b | 73.85 | 71.17 | b | 65.44 | c | 48.57 | d | 41.25 | d | 30.32 | a | 50.65 | ||
1999 | 34.64 | b | 33.62 | b | 38.96 | e | 43.79 | b | 51.00 | b | 60.88 | b | 69.17 | a | 71.52 | b | 58.73 | d | 50.16 | f | 43.92 | e | 30.90 | b | 48.83 | a |
2000 | 30.92 | g | 37.50 | d | 38.87 | e | 49.62 | d | 55.46 | f | 63.38 | b | 71.45 | b | 70.28 | b | 59.04 | d | 47.91 | d | 32.48 | c | 30.65 | a | 50.12 | b |
2001 | 28.82 | c | 33.21 | d | 41.90 | a | 44.63 | c | 56.33 | a | 60.43 | 69.82 | a | 72.70 | a | 64.13 | c | 49.15 | d | 42.80 | c | 31.44 | f | 51.27 | a | |
2002 | 32.08 | a | 32.38 | b | 36.57 | c | 46.80 | 53.40 | b | 64.89 | c | 73.84 | 66.39 | c | 60.55 | a | 45.20 | c | 39.77 | d | 34.10 | f | 50.17 | a | ||
2003 | 36.84 | c | 34.02 | b | 43.09 | c | 46.05 | 53.57 | a | 64.70 | 74.97 | 71.48 | 62.09 | b | 52.21 | e | 32.42 | d | 32.97 | 50.37 | ||||||
2004 | 28.69 | e | 33.55 | a | 44.90 | 49.24 | a | 53.94 | 62.53 | 70.31 | 68.87 | 58.34 | a | 48.50 | a | 38.10 | 33.92 | 49.24 | ||||||||
2005 | 33.13 | 34.36 | 42.00 | a | 46.42 | d | 55.30 | a | 57.84 | b | 69.40 | 70.05 | 57.62 | a | 49.16 | b | 36.10 | 27.58 | 48.25 | |||||||
2006 | 35.39 | 32.16 | 38.74 | 46.62 | a | 56.05 | a | 62.98 | 73.47 | 67.55 | 59.26 | a | 46.79 | e | 38.68 | 31.32 | c | 49.08 | ||||||||
2007 | 27.13 | 36.55 | 43.27 | a | 47.00 | a | 55.33 | a | 62.26 | a | 74.27 | 67.66 | 59.55 | a | 47.97 | a | 36.57 | 30.10 | a | 48.97 | ||||||
2008 | 26.55 | b | 35.09 | 37.00 | 42.27 | b | 54.53 | 59.02 | 69.02 | 67.63 | 58.54 | b | 48.27 | a | 41.89 | c | 28.50 | 47.36 | ||||||||
2009 | 28.68 | 34.12 | 34.97 | 45.73 | 55.23 | 62.58 | 69.77 | 68.08 | a | 63.58 | 44.55 | 38.97 | a | 25.58 | 47.65 | |||||||||||
2010 | 36.76 | 35.91 | a | 40.90 | 44.08 | 49.15 | 58.67 | 67.56 | 66.98 | 59.08 | 50.06 | 36.42 | 32.23 | 48.15 | ||||||||||||
2011 | 29.15 | a | 32.23 | 38.40 | 41.74 | a | 48.95 | 57.97 | 65.50 | 68.76 | 62.40 | 48.95 | 36.92 | 30.11 | 46.76 | |||||||||||
2012 | 33.10 | 34.67 | 40.05 | 49.53 | 53.47 | 59.40 | a | 70.39 | 70.78 | a | 61.13 | 47.35 | 41.65 | 32.90 | 49.54 | |||||||||||
2013 | 24.94 | 35.88 | 40.63 | 45.75 | 54.78 | a | 62.41 | h | ----- | z | 73.09 | b | 61.83 | a | 45.83 | a | 37.73 | b | 25.53 | b | 44.60 | b | ||||
2014 | 32.48 | 33.75 | 43.10 | 47.18 | 55.82 | 61.35 | 75.03 | 71.45 | 63.20 | 54.10 | 35.87 | 37.02 | 50.86 | |||||||||||||
2015 | 32.50 | 41.98 | 44.74 | 46.78 | 57.71 | 69.25 | 71.13 | 70.40 | a | 58.79 | a | 54.79 | 36.85 | 32.03 | 51.41 | |||||||||||
2016 | 33.40 | a | 38.43 | b | 42.71 | 53.70 | b | 57.14 | b | 63.67 | 66.73 | c | 69.89 | 59.92 | 50.70 | a | 44.77 | 23.34 | 50.36 | |||||||
2017 | 21.79 | 35.20 | 42.97 | 45.55 | 55.92 | 63.12 | 74.61 | 72.05 | 61.68 | 46.95 | a | 41.25 | 28.90 | a | 49.17 | |||||||||||
2018 | 37.18 | 33.70 | 40.60 | a | 48.13 | 60.74 | 62.07 | 73.17 | a | 72.09 | d | 60.18 | 48.96 | c | 38.60 | 30.80 | a | 50.52 | ||||||||
2019 | 33.24 | 28.32 | 35.71 | 48.97 | 56.25 | a | 62.82 | 70.05 | 71.50 | b | 61.25 | 43.81 | 40.37 | c | 34.64 | c | 48.91 | |||||||||
2020 | 35.13 | 36.00 | 40.79 | s | ----- | z | ----- | z | 61.87 | 70.61 | 71.50 | 63.85 | 50.26 | 38.80 | b | 33.79 | 51.31 | c | ||||||||
2021 | 34.56 | 33.02 | 41.31 | 49.68 | 56.79 | 69.55 | a | 77.40 | 70.48 | 62.21 | a | 51.11 | 41.82 | 32.50 | 51.70 | |||||||||||
2022 | 28.56 | 31.50 | i | 42.90 | j | 41.97 | o | 53.04 | r | 59.92 | r | 76.05 | l | 76.03 | 65.65 | 53.45 | 33.68 | 30.03 | 47.90 | f | ||||||
2023 | 32.45 | 32.66 | 34.84 | c | 44.47 | 60.24 | 64.52 | 73.96 | g | 73.54 | g | 61.67 | f | 51.47 | 40.15 | 37.32 | 44.24 | c | ||||||||
2024 | 32.16 | 37.93 | 41.46 | c | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 37.19 | i | ||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 31.31 | 34.84 | 40.75 | 46.66 | 54.95 | 62.26 | 70.03 | 69.38 | 60.52 | 49.05 | 38.64 | 31.58 | 49.13 | |||||||||||||
S.D. | 4.24 | 3.51 | 2.73 | 2.77 | 2.60 | 2.82 | 3.07 | 2.78 | 3.12 | 2.65 | 3.30 | 3.79 | 1.48 | |||||||||||||
SKEW | -0.52 | -0.90 | -0.28 | 0.23 | -0.19 | 0.48 | -0.21 | -0.27 | -0.26 | 0.03 | -1.08 | -0.49 | -0.84 | |||||||||||||
MAX | 38.03 | 41.98 | 46.37 | 53.70 | 60.74 | 69.55 | 77.40 | 76.03 | 66.66 | 54.79 | 44.77 | 37.81 | 51.70 | |||||||||||||
MIN | 19.84 | 23.08 | 34.84 | 41.08 | 48.95 | 57.84 | 60.34 | 63.65 | 51.76 | 43.63 | 26.38 | 21.34 | 44.32 | |||||||||||||
YRS | 54 | 54 | 56 | 55 | 54 | 56 | 50 | 57 | 56 | 54 | 55 | 55 | 33 |