YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1965 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 53.11 | u | 63.38 | e | 61.03 | b | 49.56 | c | 45.87 | h | 36.70 | c | 23.84 | 46.90 | g | |
1966 | 17.23 | 19.75 | 30.84 | 39.11 | b | 49.39 | 59.10 | 66.84 | 63.94 | 56.03 | 41.65 | 34.90 | 22.13 | 41.74 | ||||||||||||
1967 | 18.74 | 26.48 | a | 34.90 | 37.62 | a | 46.71 | 55.07 | a | 65.90 | 63.39 | 55.97 | 47.00 | 36.38 | a | 15.52 | 41.97 | |||||||||
1968 | 14.97 | 29.72 | 34.13 | 36.07 | 47.97 | 60.10 | 63.35 | 56.35 | 52.03 | 44.77 | 29.90 | 17.84 | 40.60 | |||||||||||||
1969 | 24.32 | 25.22 | a | 27.61 | 40.97 | 54.59 | b | 54.20 | 65.84 | 66.16 | 57.27 | 37.61 | 30.33 | 25.48 | 42.47 | |||||||||||
1970 | 23.19 | 31.04 | 29.16 | 33.47 | 50.42 | 58.07 | 64.77 | 65.65 | 52.53 | 39.71 | 33.17 | 25.03 | 42.18 | |||||||||||||
1971 | 22.16 | 24.96 | 30.55 | 39.77 | 46.90 | 61.33 | 67.73 | a | 64.52 | 51.27 | 41.23 | 29.03 | 19.48 | 41.58 | ||||||||||||
1972 | 22.84 | 29.38 | 38.55 | 41.50 | 51.48 | 59.93 | 66.87 | 63.10 | 55.53 | 43.55 | 28.77 | 17.48 | 43.25 | |||||||||||||
1973 | 9.32 | 20.86 | 29.65 | 34.17 | 48.68 | 57.57 | 63.74 | 63.87 | 53.23 | 44.93 | b | 32.33 | ----- | z | 41.67 | a | ||||||||||
1974 | ----- | z | ----- | z | 36.79 | b | 35.57 | 53.76 | b | 63.10 | a | 63.87 | a | 63.60 | a | 55.76 | a | 46.14 | b | 31.79 | a | 20.84 | 47.12 | b | ||
1975 | 17.47 | a | 25.32 | 30.53 | a | 33.53 | 44.55 | 54.90 | 65.43 | a | 63.10 | a | 55.33 | 42.77 | 27.27 | 22.16 | 40.20 | |||||||||
1976 | 17.26 | 29.76 | 26.35 | 38.13 | 48.45 | 56.48 | a | 65.19 | 60.07 | a | 54.30 | 41.58 | 33.67 | 23.03 | 41.19 | |||||||||||
1977 | 19.23 | 27.50 | 28.31 | b | 42.07 | c | 46.57 | a | 62.40 | 62.10 | 60.81 | 55.00 | 45.71 | 30.23 | 27.26 | 42.27 | ||||||||||
1978 | 22.35 | 25.04 | 34.43 | a | 38.66 | a | 44.19 | 59.43 | 62.00 | a | 60.81 | 53.77 | d | 48.20 | f | 32.13 | 14.32 | 40.65 | a | |||||||
1979 | 13.75 | c | 20.04 | a | 31.61 | c | 39.47 | 46.93 | a | 58.17 | 66.81 | 61.63 | a | 60.17 | 47.48 | 25.14 | a | 21.37 | a | 41.05 | ||||||
1980 | 23.90 | 28.31 | 28.87 | 38.20 | 46.46 | c | 61.37 | 68.03 | 63.17 | a | 55.90 | 43.06 | 32.70 | 30.61 | 43.38 | |||||||||||
1981 | 27.19 | 26.75 | 31.52 | 44.57 | 46.94 | 60.67 | 66.03 | 64.03 | 56.38 | a | 41.90 | 35.27 | 24.94 | 43.85 | ||||||||||||
1982 | 18.87 | 23.11 | 32.39 | 36.93 | b | 48.06 | 56.76 | a | 64.65 | 63.00 | a | 54.83 | a | 38.23 | 30.73 | 23.00 | 40.88 | |||||||||
1983 | 23.61 | 29.32 | 33.77 | 34.21 | b | 43.55 | 55.90 | 63.53 | a | 65.35 | 57.82 | b | 46.23 | 31.69 | a | 21.65 | 42.22 | |||||||||
1984 | 15.35 | 21.69 | 29.97 | b | 35.90 | a | 54.50 | a | 57.77 | 66.10 | 63.66 | b | 54.80 | e | 39.15 | e | 30.34 | a | 22.35 | 40.96 | ||||||
1985 | 18.71 | 18.88 | c | 30.73 | a | 41.67 | 49.97 | 61.72 | a | 64.97 | 65.48 | 50.23 | 41.19 | 29.43 | 23.00 | 41.33 | ||||||||||
1986 | 24.97 | 29.48 | a | 37.23 | 38.62 | a | 45.71 | 62.33 | 63.87 | 64.10 | 50.43 | 38.97 | 31.67 | 22.90 | 42.52 | |||||||||||
1987 | 17.68 | 27.07 | 28.45 | 42.20 | 49.13 | a | 62.17 | a | 62.58 | 61.03 | 54.53 | 46.28 | b | 30.00 | 19.52 | 41.72 | ||||||||||
1988 | 13.61 | 23.24 | 27.67 | a | 39.23 | 48.76 | b | 61.86 | b | 67.13 | 62.39 | 51.40 | 47.48 | b | 29.67 | 18.71 | 40.93 | |||||||||
1989 | 11.65 | 19.11 | a | 36.17 | a | 45.50 | 48.47 | a | 57.20 | 65.65 | 59.83 | b | 55.27 | 42.21 | b | 30.32 | b | 20.94 | 41.02 | |||||||
1990 | 19.06 | 23.44 | c | 34.63 | a | 42.60 | 45.45 | 60.67 | 62.86 | b | 61.81 | 57.97 | 41.90 | a | 30.53 | 13.77 | 41.22 | |||||||||
1991 | 14.32 | 24.39 | 29.80 | a | 35.50 | b | 47.21 | b | 58.20 | 63.23 | a | 60.81 | 52.47 | 42.20 | a | 25.46 | b | 17.84 | 39.29 | |||||||
1992 | 13.60 | a | 26.41 | 33.00 | a | 42.43 | 46.74 | 53.62 | a | 58.07 | b | 63.36 | c | 55.52 | e | 45.93 | a | 25.70 | 18.87 | a | 40.27 | |||||
1993 | 22.90 | 27.04 | 35.29 | 37.75 | b | 49.45 | 54.15 | c | 62.66 | b | 61.23 | 51.60 | 40.53 | a | 26.10 | a | 21.29 | c | 40.83 | |||||||
1994 | 24.03 | ----- | z | 36.34 | b | 37.41 | a | 51.04 | d | 64.00 | a | 67.37 | a | 67.03 | 55.66 | a | 40.84 | 24.39 | b | 22.30 | a | 44.58 | a | |||
1995 | 24.97 | a | 34.44 | a | 34.61 | 36.17 | a | 43.03 | 54.69 | a | 64.13 | a | 65.58 | 55.48 | a | 39.27 | a | 34.40 | e | 34.69 | o | 44.25 | a | |||
1996 | 23.52 | f | 30.45 | 33.38 | b | 39.47 | 52.13 | 63.67 | 68.48 | b | 66.97 | 51.80 | 42.60 | a | 31.93 | b | 23.86 | b | 45.88 | a | ||||||
1997 | 21.93 | c | 24.26 | a | 34.00 | 35.20 | 51.38 | b | 60.76 | a | 63.10 | 61.42 | 56.55 | a | 42.13 | a | 30.97 | 21.07 | b | 41.90 | ||||||
1998 | 25.76 | b | 25.35 | b | 32.43 | a | 36.55 | a | 50.00 | c | 56.14 | a | 68.45 | b | 67.27 | a | 58.50 | 43.59 | d | 32.45 | a | 20.18 | c | 43.06 | ||
1999 | 26.80 | a | 27.54 | b | 37.03 | b | 33.93 | 46.10 | b | 57.71 | b | 66.31 | b | 62.63 | a | 53.83 | a | 45.67 | a | 36.03 | 21.70 | a | 42.94 | |||
2000 | 28.00 | 30.76 | 32.65 | 44.03 | 53.32 | 62.33 | 68.65 | 67.19 | 54.32 | b | 42.71 | 24.21 | a | 24.33 | a | 44.38 | ||||||||||
2001 | 21.97 | 27.54 | b | 35.27 | a | 43.14 | b | 53.45 | b | 63.14 | a | 67.32 | 65.11 | c | 59.83 | 47.10 | a | 35.60 | 20.45 | b | 44.99 | |||||
2002 | 19.90 | b | 21.56 | a | 28.35 | e | 44.53 | 49.77 | 65.70 | 70.32 | 65.60 | a | 54.76 | a | 41.50 | a | 30.77 | 24.53 | a | 43.11 | ||||||
2003 | 29.10 | a | 26.48 | a | 34.67 | a | 40.67 | 52.55 | 60.90 | 73.10 | 66.77 | 56.37 | 49.34 | b | 30.77 | 23.54 | c | 45.35 | ||||||||
2004 | 17.83 | a | 23.28 | 39.48 | 41.43 | 52.33 | a | 61.67 | 67.10 | 64.06 | 55.07 | 43.29 | 30.96 | b | 23.30 | a | 43.32 | |||||||||
2005 | 30.10 | b | 29.75 | 33.23 | 40.27 | 50.90 | 57.30 | 70.71 | 63.41 | b | 56.55 | a | 44.70 | a | 34.40 | 23.23 | a | 44.55 | ||||||||
2006 | 23.39 | c | 26.07 | a | 32.17 | a | 42.59 | a | 54.35 | 65.37 | 69.45 | 63.10 | 51.28 | a | 41.64 | c | 33.40 | 21.90 | a | 43.73 | ||||||
2007 | 18.83 | a | 29.78 | a | 35.65 | 41.52 | a | 51.87 | 63.60 | 67.93 | a | 67.07 | a | 57.37 | 41.73 | a | 37.32 | b | 20.83 | a | 44.46 | |||||
2008 | 18.43 | a | 25.59 | 31.47 | a | 36.93 | 46.60 | a | 60.48 | a | 69.52 | f | 67.00 | a | 58.07 | 45.74 | 36.43 | 22.66 | b | 40.85 | a | |||||
2009 | 22.83 | a | 30.04 | 33.69 | b | 38.13 | 53.77 | 58.39 | b | 69.61 | c | 66.63 | a | 59.67 | 40.46 | c | 35.13 | 16.26 | 43.72 | |||||||
2010 | 17.97 | 22.43 | 31.29 | 39.33 | 45.79 | c | 62.20 | 67.81 | 62.32 | 59.53 | 45.10 | a | 29.30 | 25.23 | a | 42.36 | ||||||||||
2011 | 15.53 | a | 20.19 | a | 34.68 | 37.76 | a | 43.32 | 60.59 | a | 65.65 | 67.87 | 59.53 | 45.39 | 32.62 | a | 22.71 | 42.15 | ||||||||
2012 | 25.70 | a | 27.45 | 37.71 | 43.53 | 53.06 | 65.57 | 68.06 | 67.74 | 59.47 | 46.65 | 37.76 | a | 23.40 | a | 46.34 | ||||||||||
2013 | 13.79 | b | 24.25 | 35.68 | 37.97 | 51.29 | 65.62 | a | 68.59 | b | 65.65 | 57.07 | 42.31 | e | 32.04 | e | 17.55 | b | 42.65 | |||||||
2014 | 24.81 | 31.93 | a | 34.34 | b | 39.67 | 50.19 | 61.20 | 68.93 | a | 62.13 | a | 60.40 | 46.93 | a | 32.34 | a | 27.74 | 45.05 | |||||||
2015 | 21.09 | h | 30.68 | f | 39.73 | a | 41.13 | 46.90 | a | 64.45 | a | 63.52 | 65.45 | 60.74 | c | 48.60 | a | 31.40 | 21.50 | a | 48.34 | b | ||||
2016 | 21.19 | d | 28.08 | d | 35.29 | 40.93 | a | 48.00 | 67.90 | 69.06 | 63.65 | 56.66 | a | 48.00 | 38.13 | 23.53 | a | 45.03 | ||||||||
2017 | 22.63 | d | 33.81 | b | 40.03 | 39.53 | 49.52 | 66.23 | 68.81 | 66.55 | 56.47 | 42.26 | 39.73 | 27.38 | b | 46.08 | ||||||||||
2018 | 26.30 | a | 27.70 | a | 34.06 | 42.33 | 53.97 | a | 65.45 | a | 70.45 | 67.87 | 63.07 | 42.16 | 30.86 | a | 23.29 | j | 47.66 | a | ||||||
2019 | 24.53 | n | 22.68 | 34.76 | b | 41.97 | a | 45.04 | d | 58.73 | 70.07 | a | 69.16 | 60.10 | 36.23 | 34.13 | 24.13 | 45.18 | a | |||||||
2020 | 20.28 | b | 24.83 | 36.93 | d | 41.88 | d | 54.32 | 60.46 | d | 68.67 | a | 72.42 | 56.50 | d | 46.55 | b | 33.73 | d | 21.45 | k | 46.96 | a | |||
2021 | 23.05 | j | 25.25 | d | 32.03 | 38.43 | 51.70 | a | 65.97 | 68.93 | b | 62.90 | a | 59.03 | 39.44 | d | 37.95 | i | 27.76 | j | 49.30 | c | ||||
2022 | 22.86 | q | 22.13 | e | 31.00 | 39.37 | 48.57 | a | 62.10 | a | 69.00 | b | 65.25 | c | 62.00 | a | 44.87 | a | 27.97 | 23.50 | a | 45.07 | a | |||
2023 | 24.52 | 19.04 | 28.07 | a | 35.83 | a | 53.21 | b | 58.41 | a | 69.81 | 66.07 | a | 58.07 | a | 45.16 | 34.30 | 27.57 | a | 43.34 | ||||||
2024 | 24.77 | 29.97 | 34.13 | 43.08 | f | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 29.62 | i | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 20.75 | 26.00 | 33.17 | 39.26 | 49.28 | 60.43 | 66.42 | 64.22 | 55.94 | 43.36 | 31.81 | 22.03 | 42.61 | |||||||||||||
S.D. | 4.73 | 3.78 | 3.27 | 3.04 | 3.21 | 3.51 | 2.82 | 2.72 | 3.07 | 2.99 | 3.50 | 3.36 | 1.66 | |||||||||||||
SKEW | -0.26 | -0.04 | 0.00 | -0.06 | -0.03 | -0.03 | -0.29 | 0.07 | 0.00 | -0.12 | -0.13 | -0.23 | 0.36 | |||||||||||||
MAX | 30.10 | 34.44 | 40.03 | 45.50 | 54.59 | 67.90 | 73.10 | 72.42 | 63.07 | 49.34 | 39.73 | 30.61 | 46.34 | |||||||||||||
MIN | 9.32 | 18.88 | 26.35 | 33.47 | 43.03 | 53.62 | 58.07 | 56.35 | 49.56 | 36.23 | 24.21 | 13.77 | 39.29 | |||||||||||||
YRS | 53 | 56 | 59 | 58 | 58 | 58 | 58 | 59 | 59 | 57 | 58 | 54 | 45 |