YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1964 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 67.23 | 64.10 | 57.07 | 42.61 | 33.77 | 22.61 | 47.90 | f | ||||||
1965 | 23.74 | 21.54 | 26.74 | d | 44.95 | i | 54.05 | l | 59.43 | g | 64.20 | f | 64.38 | g | 52.93 | 42.58 | 37.52 | g | 25.33 | j | 33.51 | g | ||||
1966 | 13.87 | a | 18.00 | f | 29.61 | c | 38.17 | f | 50.75 | c | 61.96 | b | 69.87 | a | 62.81 | d | 54.93 | c | 39.06 | 31.13 | 18.86 | c | 43.29 | b | ||
1967 | ----- | z | 22.95 | h | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1968 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1969 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1970 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1971 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1972 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1973 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1974 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1975 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1976 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1977 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1978 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1979 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1980 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 66.03 | 57.73 | 40.13 | 25.69 | a | 25.12 | g | 47.40 | h | |||
1981 | 24.75 | s | 33.20 | c | 32.62 | b | 44.21 | b | 48.71 | j | 65.00 | b | 66.41 | d | 61.63 | a | 54.83 | 44.74 | d | 32.83 | a | 23.90 | 45.94 | b | ||
1982 | 19.82 | c | 19.50 | f | 29.48 | d | 35.08 | d | 50.20 | f | 61.27 | d | 68.50 | e | 65.59 | b | 54.93 | a | 37.26 | 27.59 | a | 22.67 | a | 42.22 | b | |
1983 | 19.50 | c | 23.48 | c | 32.04 | e | 35.81 | c | 45.68 | 56.34 | a | 66.39 | 64.50 | a | 57.48 | c | 45.28 | b | 33.85 | j | 15.19 | j | 44.65 | b | ||
1984 | 18.10 | j | 19.71 | l | 30.60 | k | 37.58 | d | 51.81 | e | 60.93 | a | 62.70 | a | 63.33 | a | 50.80 | e | 42.96 | h | 31.75 | j | 27.53 | n | 54.52 | f |
1985 | 19.50 | m | 23.15 | b | 35.93 | b | 42.72 | e | 51.93 | a | 61.63 | 63.94 | 63.47 | a | 56.57 | 41.91 | h | 30.00 | g | 19.00 | f | 49.92 | d | |||
1986 | 25.10 | a | 27.96 | a | 36.03 | a | 42.13 | 49.84 | 61.37 | 66.48 | 63.81 | 58.46 | f | 45.08 | g | 27.80 | 23.00 | 42.35 | b | |||||||
1987 | 18.74 | 29.32 | 27.86 | c | 36.43 | 51.97 | b | 61.11 | b | 66.26 | 63.31 | b | 53.90 | 40.48 | d | 27.73 | 18.00 | d | 41.26 | |||||||
1988 | 14.06 | 19.62 | 26.47 | a | 36.96 | d | 49.20 | a | 59.87 | 63.27 | a | 63.90 | b | 53.43 | 40.87 | a | 27.59 | c | 18.14 | c | 39.45 | |||||
1989 | 18.43 | a | 20.25 | 28.46 | c | 40.38 | a | 53.03 | 57.42 | d | 61.65 | k | 63.58 | 51.97 | 40.74 | 25.48 | a | 19.32 | 38.10 | a | ||||||
1990 | 24.74 | 28.68 | 36.32 | 46.97 | a | 51.20 | a | 65.67 | 67.13 | 63.97 | 60.90 | 42.03 | 32.90 | 23.72 | f | 47.32 | a | |||||||||
1991 | 27.13 | 32.48 | a | 33.90 | b | 42.60 | 52.70 | a | 62.47 | 63.97 | 64.39 | 54.57 | 40.19 | 27.50 | 24.77 | a | 43.89 | |||||||||
1992 | 22.77 | a | 28.43 | a | 34.23 | 44.77 | 51.86 | c | 57.71 | b | 63.68 | 62.19 | 55.22 | c | 41.47 | a | 24.28 | a | 21.65 | 42.35 | ||||||
1993 | 21.23 | 23.46 | 32.26 | 40.00 | a | 52.00 | 59.88 | e | 67.37 | a | 64.16 | 53.37 | 39.26 | 26.07 | a | 21.87 | 41.74 | |||||||||
1994 | 19.19 | 20.33 | a | 33.61 | 40.23 | 54.26 | 64.90 | 63.90 | 63.68 | 54.80 | 44.06 | 31.67 | 26.00 | 43.05 | ||||||||||||
1995 | 24.94 | 27.64 | 32.70 | d | 38.00 | 49.80 | a | 58.30 | 63.32 | 67.16 | 55.23 | 39.45 | 29.00 | 23.48 | 42.42 | |||||||||||
1996 | 16.84 | 24.10 | 25.77 | 40.57 | 56.45 | 62.53 | 65.74 | 64.67 | a | 54.20 | 42.90 | 30.23 | 20.65 | 42.05 | ||||||||||||
1997 | 20.57 | a | 25.39 | 30.10 | 36.53 | 50.81 | 60.27 | 65.77 | 62.77 | 58.90 | 43.39 | 28.00 | a | 21.90 | 42.03 | |||||||||||
1998 | 22.71 | 29.43 | 29.10 | 37.73 | 51.81 | 59.00 | 66.87 | 62.71 | 59.47 | 46.81 | 33.57 | 21.52 | 43.39 | |||||||||||||
1999 | 24.71 | 26.21 | 32.58 | 41.30 | 48.50 | i | 60.34 | a | 66.03 | 64.03 | 55.07 | 39.74 | 30.53 | 21.32 | 41.99 | a | ||||||||||
2000 | 22.00 | 27.93 | a | 34.58 | 41.67 | 53.32 | 62.87 | 67.26 | 66.61 | 55.87 | 47.77 | 27.13 | 17.35 | 43.70 | ||||||||||||
2001 | 21.16 | 26.39 | 32.39 | 44.67 | 51.60 | a | 62.13 | 67.77 | 64.32 | 55.27 | 40.81 | 37.07 | 21.23 | 43.73 | ||||||||||||
2002 | 21.94 | 23.14 | 26.77 | 44.23 | 50.84 | 64.93 | 67.52 | 67.13 | 57.77 | 42.55 | 30.63 | 21.58 | 43.25 | |||||||||||||
2003 | 22.94 | 23.54 | 31.68 | 41.50 | 53.32 | 59.77 | 67.19 | 66.32 | 55.53 | 45.32 | 33.70 | 22.71 | 43.63 | |||||||||||||
2004 | 22.52 | 23.07 | a | 38.90 | 43.70 | 54.29 | 60.73 | 64.90 | 62.26 | 57.33 | 44.97 | 33.70 | 23.65 | 44.17 | ||||||||||||
2005 | 27.06 | 30.79 | 31.35 | 41.17 | 52.19 | 61.47 | 64.61 | 64.06 | 60.32 | b | 43.32 | 28.13 | 18.84 | 43.61 | ||||||||||||
2006 | 22.19 | 20.00 | 34.13 | 45.20 | 54.77 | 64.53 | 68.58 | 67.65 | 53.90 | 44.52 | 30.20 | 22.19 | 43.99 | |||||||||||||
2007 | 19.40 | a | 23.36 | 37.71 | 40.30 | 52.84 | 59.97 | 63.87 | 66.26 | 58.53 | 43.03 | 26.53 | 20.94 | 42.73 | ||||||||||||
2008 | 19.84 | 24.00 | 29.52 | 38.97 | 51.26 | 63.30 | 66.58 | 64.26 | 54.70 | 43.03 | 30.63 | 21.74 | 42.32 | |||||||||||||
2009 | 18.06 | 26.29 | 33.52 | 41.50 | 52.39 | 61.57 | 66.48 | 64.03 | 54.33 | 40.10 | 30.30 | 16.29 | 42.07 | |||||||||||||
2010 | 17.77 | 21.21 | 31.68 | 43.73 | 50.84 | 67.17 | 68.45 | 65.65 | 60.73 | 44.77 | 27.20 | 23.90 | 43.59 | |||||||||||||
2011 | 17.45 | 18.32 | 33.48 | 41.27 | 48.87 | 64.13 | 70.84 | 70.35 | 56.17 | 43.61 | 31.30 | 22.65 | 43.20 | |||||||||||||
2012 | 22.84 | 25.34 | 38.65 | 47.03 | 53.19 | 65.77 | 69.39 | 64.97 | 56.20 | 41.00 | 29.93 | 22.06 | 44.70 | |||||||||||||
2013 | 21.84 | 24.32 | 31.13 | 36.77 | 50.97 | 66.33 | 67.71 | 67.00 | 61.23 | 41.32 | 30.67 | 17.35 | 43.05 | |||||||||||||
2014 | 18.19 | 22.25 | 29.48 | 41.07 | 50.55 | 64.17 | 66.90 | 64.87 | 58.80 | 44.10 | 26.80 | 23.23 | 42.53 | |||||||||||||
2015 | 21.97 | 23.14 | 32.81 | 41.73 | 51.13 | 64.03 | 67.84 | 65.71 | 62.60 | 49.65 | 30.90 | 24.23 | 44.64 | |||||||||||||
2016 | 22.00 | 26.72 | 33.52 | 41.93 | 48.55 | 62.87 | 68.71 | 63.19 | 57.67 | 46.23 | 34.53 | 19.06 | 43.75 | |||||||||||||
2017 | 22.13 | 27.21 | 34.45 | 43.90 | 47.65 | 62.50 | 67.32 | 62.42 | 57.00 | 43.74 | 34.13 | 16.58 | 43.25 | |||||||||||||
2018 | 15.61 | 23.07 | 34.94 | 36.37 | 57.65 | 64.70 | 64.97 | 65.13 | 57.43 | 45.23 | 26.80 | 22.26 | 42.85 | |||||||||||||
2019 | 22.16 | 22.57 | 32.10 | 41.37 | 49.90 | 58.23 | 65.65 | 67.65 | 63.73 | 37.68 | 27.17 | 23.52 | 42.64 | |||||||||||||
2020 | 23.77 | 24.38 | 38.55 | 39.27 | 53.90 | 65.07 | 68.55 | 65.74 | 51.80 | 38.71 | 34.50 | 20.87 | 43.76 | |||||||||||||
2021 | 23.29 | 16.04 | 33.81 | 40.50 | 54.35 | 64.07 | 65.87 | 66.06 | 59.30 | 43.32 | 29.33 | 25.42 | 43.45 | |||||||||||||
2022 | 16.16 | 15.96 | 28.81 | 42.27 | 53.32 | 66.93 | 70.61 | 65.61 | 58.43 | 45.19 | 28.23 | 21.87 | 42.78 | |||||||||||||
2023 | 23.68 | 24.21 | 33.90 | 39.67 | 54.87 | 60.70 | 67.19 | 65.77 | 60.53 | 44.13 | 30.63 | 27.26 | 44.38 | |||||||||||||
2024 | 19.61 | 28.79 | 35.77 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 28.06 | i | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 21.02 | 24.58 | 32.43 | 40.93 | 51.89 | 62.18 | 66.58 | 64.76 | 56.60 | 42.66 | 29.85 | 21.62 | 43.04 | |||||||||||||
S.D. | 3.16 | 3.90 | 3.30 | 2.98 | 2.29 | 2.67 | 1.97 | 1.75 | 2.90 | 2.70 | 2.97 | 2.54 | 1.04 | |||||||||||||
SKEW | -0.33 | -0.02 | -0.06 | -0.05 | -0.08 | -0.10 | -0.00 | 0.70 | 0.36 | 0.16 | 0.32 | -0.27 | -1.15 | |||||||||||||
MAX | 27.13 | 33.20 | 38.90 | 47.03 | 57.65 | 67.17 | 70.84 | 70.35 | 63.73 | 49.65 | 37.07 | 27.26 | 44.70 | |||||||||||||
MIN | 13.87 | 15.96 | 25.77 | 35.08 | 45.68 | 56.34 | 62.70 | 61.63 | 50.80 | 37.26 | 24.28 | 16.29 | 39.45 | |||||||||||||
YRS | 43 | 43 | 45 | 43 | 41 | 44 | 44 | 46 | 46 | 44 | 43 | 41 | 34 |