YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1962 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 55.16 | b | 59.74 | 59.11 | 55.78 | 44.92 | 33.25 | 27.53 | 47.93 | e | ||||||
1963 | 20.95 | 33.95 | 35.90 | 39.58 | ----- | z | 54.05 | 61.71 | 61.55 | 56.53 | 46.18 | 32.80 | 23.45 | 42.42 | a | |||||||||||
1964 | 26.26 | 30.40 | 30.82 | 36.88 | b | 45.20 | a | 52.13 | 59.56 | 57.81 | 53.45 | a | 48.61 | 30.90 | 19.37 | 40.95 | ||||||||||
1965 | 26.16 | 32.34 | 32.92 | a | 41.50 | 45.73 | a | 54.02 | 61.86 | c | 64.48 | a | 53.47 | 48.18 | a | ----- | z | ----- | z | 46.07 | b | |||||
1966 | ----- | z | 30.04 | 33.21 | 41.60 | a | 51.11 | 52.33 | 59.00 | a | 61.19 | 57.67 | 42.52 | 34.87 | 29.06 | 44.78 | a | |||||||||
1967 | 29.45 | 32.14 | 32.69 | 37.80 | 48.40 | 58.45 | 62.06 | 66.03 | 58.88 | 42.50 | f | 32.15 | c | 24.65 | a | 43.88 | a | |||||||||
1968 | 24.63 | a | 31.83 | 36.74 | 39.41 | a | 49.33 | b | ----- | z | 63.67 | b | 57.25 | a | 52.83 | 41.08 | g | 31.75 | 17.35 | 40.48 | b | |||||
1969 | 12.90 | 23.04 | 33.61 | 39.85 | 50.71 | 60.97 | 59.73 | 59.24 | 53.88 | 42.05 | a | 33.33 | c | 25.34 | b | 41.22 | ||||||||||
1970 | 21.79 | 31.43 | a | 33.11 | 37.57 | 47.90 | 59.10 | 62.55 | 61.85 | 48.24 | c | 40.71 | 28.82 | 20.67 | a | 41.14 | ||||||||||
1971 | 24.39 | i | 28.21 | 27.68 | 38.12 | 48.61 | 51.40 | 61.19 | 62.39 | 49.41 | a | 39.27 | 31.02 | 20.50 | 41.62 | a | ||||||||||
1972 | 21.11 | 24.53 | 33.87 | a | 35.05 | 48.63 | 54.80 | 58.44 | 61.02 | a | 48.78 | 42.98 | 31.68 | 20.95 | 40.15 | |||||||||||
1973 | 18.06 | 27.43 | 36.08 | 41.10 | 49.74 | 54.32 | 61.74 | 59.76 | 54.43 | 42.32 | 27.28 | 27.16 | 41.62 | |||||||||||||
1974 | 19.32 | 30.30 | 32.10 | 39.20 | 45.33 | b | 56.72 | 58.90 | 61.77 | 56.22 | 44.89 | 32.58 | 29.94 | o | 43.39 | a | ||||||||||
1975 | 24.50 | r | 21.52 | f | 28.39 | d | 37.18 | 46.23 | 53.63 | 64.18 | 58.03 | a | 55.81 | a | 44.00 | a | 34.79 | a | 25.57 | c | 44.78 | b | ||||
1976 | 25.52 | e | 27.22 | b | 29.53 | a | 38.28 | 47.21 | 51.05 | 57.23 | 56.60 | b | 55.55 | 42.97 | 32.23 | 28.23 | a | 40.97 | ||||||||
1977 | 20.36 | m | 33.12 | 33.90 | 45.23 | 45.48 | 58.43 | a | 59.13 | a | 63.63 | 49.92 | 41.53 | 27.93 | a | 23.45 | a | 43.80 | a | |||||||
1978 | 25.05 | a | 28.46 | 34.75 | a | 40.78 | 47.43 | a | 55.78 | 60.20 | a | 59.08 | 49.75 | 43.34 | 26.98 | 18.98 | b | 40.88 | ||||||||
1979 | 11.98 | e | 23.79 | 34.03 | a | 37.23 | o | ----- | z | 54.78 | l | 62.09 | c | 61.61 | c | 54.76 | g | 45.58 | 27.29 | a | 29.10 | b | 36.93 | d | ||
1980 | 14.45 | b | 24.62 | 32.41 | c | 40.59 | h | 48.11 | c | 50.60 | d | 58.94 | e | 57.13 | d | 52.12 | a | 41.79 | c | 29.38 | a | 26.25 | a | 39.62 | a | |
1981 | 26.71 | 27.07 | 35.85 | 38.87 | 48.94 | f | 51.14 | a | 59.21 | e | 64.97 | b | 44.50 | p | 40.42 | a | 31.53 | 22.47 | a | 39.82 | b | |||||
1982 | 23.45 | 24.43 | a | 31.09 | b | 35.58 | 45.18 | 56.65 | 58.85 | 59.58 | a | 52.52 | c | 40.11 | c | 24.41 | a | 21.48 | b | 39.44 | ||||||
1983 | 28.68 | a | 28.87 | a | 36.13 | a | 39.97 | 50.29 | c | 52.45 | a | 53.98 | 59.40 | 48.70 | 40.73 | a | 32.07 | 11.69 | 40.25 | |||||||
1984 | 27.00 | b | 30.83 | 37.33 | a | 39.97 | a | 45.70 | i | 51.28 | a | 59.73 | a | 60.67 | a | 49.53 | 39.87 | a | 27.66 | b | 16.64 | b | 40.05 | a | ||
1985 | 18.58 | a | 23.15 | b | 31.67 | d | 41.76 | g | 46.63 | h | 53.32 | 65.31 | 58.14 | f | 49.48 | f | 37.98 | g | 20.68 | h | 18.38 | g | 38.41 | g | ||
1986 | 25.98 | j | 23.62 | h | 37.10 | g | 39.64 | e | 46.93 | h | 57.77 | j | 57.00 | k | 63.91 | i | 49.98 | g | 44.69 | j | 32.37 | d | 21.43 | h | 36.00 | j |
1987 | 20.92 | e | 28.83 | b | 33.07 | b | 42.13 | 47.43 | b | 57.12 | b | 60.18 | a | 59.12 | b | 57.02 | b | 46.48 | 34.73 | 21.00 | 42.34 | |||||
1988 | 20.19 | 29.34 | 33.88 | a | 41.33 | a | 47.84 | 53.37 | 59.63 | 59.13 | a | 51.88 | b | 47.52 | a | 29.77 | b | 21.87 | a | 41.31 | ||||||
1989 | 26.76 | 18.32 | c | 29.57 | d | 41.59 | a | 47.44 | 57.02 | 58.43 | a | 58.03 | 53.71 | a | 42.44 | 33.95 | b | 26.00 | 41.10 | |||||||
1990 | 26.60 | a | 25.52 | a | 34.27 | 42.58 | 46.22 | a | 52.70 | 62.80 | d | 60.32 | a | 57.14 | b | 38.02 | 33.55 | a | 15.38 | a | 41.26 | |||||
1991 | 21.88 | c | 32.16 | 29.57 | c | 39.21 | a | 47.46 | g | 53.25 | f | 59.11 | d | 60.46 | c | 55.56 | c | 42.27 | 29.40 | a | 27.66 | b | 39.73 | b | ||
1992 | 24.34 | b | 30.04 | b | 38.15 | a | 41.97 | 52.83 | b | 59.63 | c | 59.10 | e | 60.41 | d | 49.37 | c | 41.09 | h | 30.72 | a | 19.13 | d | 42.33 | a | |
1993 | 18.71 | l | 23.09 | 31.11 | 38.27 | b | 53.52 | b | 52.48 | 54.44 | 57.47 | 53.10 | 44.76 | 27.07 | 21.24 | b | 41.50 | a | ||||||||
1994 | 29.95 | a | 23.29 | 35.22 | b | 42.92 | 50.34 | 52.33 | 63.40 | 60.11 | 56.02 | 41.03 | a | 24.74 | a | 21.46 | c | 41.74 | ||||||||
1995 | 16.50 | a | 27.93 | a | 29.98 | a | 38.33 | 50.10 | 55.85 | 62.19 | 55.72 | a | ----- | z | 39.62 | a | 32.14 | a | 23.16 | 39.23 | a | |||||
1996 | 21.98 | c | 21.12 | ----- | z | 39.23 | 43.31 | 52.98 | e | 62.53 | 61.50 | b | 52.28 | c | 39.94 | g | 28.60 | e | 19.71 | b | 40.32 | b | ||||
1997 | 21.16 | c | 24.94 | a | ----- | z | ----- | z | 46.88 | c | ----- | z | 58.71 | 62.46 | c | 53.94 | e | ----- | z | 31.03 | a | 24.39 | c | 40.44 | d | |
1998 | 23.89 | c | 29.58 | b | 30.54 | c | 40.03 | 51.14 | c | 56.24 | a | 65.81 | 63.81 | 59.67 | 42.62 | b | 33.05 | a | 20.24 | h | 45.13 | a | ||||
1999 | 28.66 | b | 26.05 | 29.16 | 38.14 | a | 44.53 | a | 52.25 | 59.13 | 62.73 | 52.42 | 42.10 | b | 32.73 | d | 25.85 | a | 41.15 | |||||||
2000 | 21.02 | 23.98 | a | 31.33 | b | 43.63 | c | 47.57 | b | 54.48 | b | 59.46 | d | 60.52 | b | 51.65 | ----- | z | 26.95 | a | 21.28 | f | 42.06 | b | ||
2001 | 24.71 | 25.21 | b | 35.32 | 39.34 | a | 48.57 | c | 53.73 | 60.98 | b | 63.25 | c | 58.37 | c | 40.34 | b | 32.72 | a | 24.90 | b | 42.29 | ||||
2002 | 25.47 | a | 25.96 | a | 29.33 | b | 39.95 | b | 46.52 | a | 57.52 | a | 63.81 | b | 60.18 | f | 52.86 | b | 40.93 | c | 32.87 | d | 27.06 | f | 41.52 | b |
2003 | 26.30 | c | 28.24 | e | 35.38 | c | 40.13 | c | 48.24 | 58.90 | 64.43 | b | 63.21 | 55.63 | d | 45.88 | b | 26.48 | 21.61 | d | 42.87 | |||||
2004 | 23.18 | a | 28.93 | a | 37.95 | b | 43.89 | b | 48.85 | a | 57.45 | a | 62.87 | d | 63.23 | a | 50.07 | b | 43.31 | b | 31.18 | b | 26.32 | c | 43.10 | |
2005 | 24.97 | a | 26.80 | f | 36.85 | a | 41.96 | b | 51.34 | 53.18 | 59.97 | a | 61.55 | b | 51.46 | c | 42.59 | b | 28.12 | a | 21.64 | b | 43.06 | a | ||
2006 | 29.05 | 24.42 | d | 31.14 | c | 39.91 | c | 46.71 | 55.29 | a | 63.67 | b | 59.90 | e | 52.45 | i | 42.59 | b | 27.53 | 21.14 | i | 42.02 | b | |||
2007 | 18.32 | c | 27.81 | g | 35.00 | i | 39.27 | b | 48.19 | 54.24 | a | 63.84 | 58.30 | c | 51.50 | f | 38.39 | d | 30.46 | c | 21.92 | 41.44 | c | |||
2008 | 17.71 | b | 29.65 | e | 31.41 | b | 34.82 | b | 47.85 | 52.48 | a | 60.88 | b | 60.00 | 52.03 | 40.61 | 31.93 | 20.87 | a | 40.02 | ||||||
2009 | 23.50 | b | 24.84 | 27.43 | a | 38.62 | a | 47.06 | 56.33 | a | 62.73 | a | 61.74 | b | 54.28 | c | 38.06 | e | 30.81 | a | 16.98 | c | 40.20 | |||
2010 | 26.40 | e | 29.27 | b | 33.79 | 38.74 | a | 43.76 | 52.62 | 60.28 | b | 58.55 | 50.97 | 42.77 | 27.85 | 23.87 | 40.74 | |||||||||
2011 | 25.24 | 24.21 | 29.87 | 35.25 | 43.10 | f | 52.18 | k | 56.65 | a | 60.27 | a | 55.87 | 40.71 | 26.65 | 21.45 | a | 37.62 | b | |||||||
2012 | 21.79 | 25.60 | 30.94 | 38.48 | 46.53 | 50.58 | 61.30 | c | 63.14 | b | 54.88 | b | 42.35 | 31.16 | a | 24.82 | 40.96 | |||||||||
2013 | 20.08 | 30.13 | a | 33.97 | 39.95 | a | 49.40 | b | 54.00 | 63.68 | 61.02 | a | 54.63 | c | 39.94 | 30.42 | 23.35 | 41.71 | ||||||||
2014 | 26.26 | 21.93 | 32.45 | 39.92 | 48.65 | 54.87 | 64.52 | 62.53 | 53.93 | 45.44 | 29.17 | 25.03 | 42.06 | |||||||||||||
2015 | 24.85 | a | 32.75 | 37.48 | 40.93 | 51.95 | 61.85 | 64.90 | 62.02 | 50.95 | 46.42 | 27.38 | 23.55 | 43.75 | ||||||||||||
2016 | 22.66 | 30.50 | 34.90 | 44.70 | 51.24 | 56.50 | 60.42 | 62.61 | 51.95 | 40.26 | 35.40 | 18.48 | 42.47 | |||||||||||||
2017 | 14.53 | 21.80 | 31.76 | 38.35 | 48.03 | 56.35 | 63.94 | 65.31 | 55.00 | 39.52 | 30.92 | 20.98 | 40.54 | |||||||||||||
2018 | 26.95 | 25.55 | 30.94 | 39.67 | 54.56 | 54.32 | 64.42 | 62.48 | 51.33 | 41.16 | 31.57 | 23.47 | 42.20 | |||||||||||||
2019 | 23.18 | 15.71 | 28.18 | 39.98 | 51.55 | 56.07 | 59.97 | 62.65 | 53.07 | a | 37.42 | 30.52 | 24.37 | 40.22 | ||||||||||||
2020 | 25.61 | 28.57 | 31.98 | 40.42 | 49.50 | 54.03 | 60.74 | 61.65 | 55.95 | 42.56 | 30.00 | a | 23.21 | 42.02 | ||||||||||||
2021 | 24.66 | 24.77 | 32.69 | 40.02 | 47.94 | 59.60 | 67.16 | 62.90 | 51.98 | 39.44 | 33.43 | 21.95 | 42.21 | |||||||||||||
2022 | 21.56 | 27.73 | 34.71 | 35.20 | 44.21 | 53.44 | c | 63.98 | a | 65.81 | 55.55 | 47.18 | 24.34 | a | 16.69 | 40.87 | ||||||||||
2023 | 24.60 | f | 24.19 | g | 28.95 | i | 35.34 | n | 51.94 | f | 55.87 | g | 62.73 | a | 62.80 | a | 53.45 | a | 42.61 | 27.95 | 26.29 | 45.97 | f | |||
2024 | 20.05 | b | 28.95 | 27.30 | p | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 24.50 | j | |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 22.96 | 27.12 | 32.82 | 39.68 | 48.28 | 54.87 | 61.18 | 61.03 | 53.48 | 42.41 | 30.41 | 22.57 | 41.37 | |||||||||||||
S.D. | 4.16 | 3.77 | 2.74 | 2.28 | 2.48 | 2.71 | 2.64 | 2.33 | 2.74 | 2.70 | 2.73 | 3.60 | 0.98 | |||||||||||||
SKEW | -0.69 | -0.52 | 0.02 | 0.04 | 0.29 | 0.55 | -0.25 | -0.04 | 0.07 | 0.43 | -0.34 | -0.49 | 0.35 | |||||||||||||
MAX | 29.95 | 33.95 | 38.15 | 45.23 | 54.56 | 61.85 | 67.16 | 66.03 | 59.67 | 48.61 | 35.40 | 29.10 | 43.75 | |||||||||||||
MIN | 11.98 | 15.71 | 27.43 | 34.82 | 43.31 | 50.58 | 53.98 | 55.72 | 48.24 | 37.42 | 24.34 | 11.69 | 39.44 | |||||||||||||
YRS | 55 | 57 | 56 | 56 | 52 | 55 | 61 | 59 | 55 | 54 | 60 | 54 | 32 |