YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1966 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 68.93 | b | 63.13 | a | 58.04 | b | 43.03 | a | 36.23 | 22.87 | 48.71 | f | ||
1967 | 23.48 | 25.15 | b | 38.90 | 49.90 | 50.20 | a | 62.97 | a | 64.97 | a | 61.74 | 54.12 | e | 43.44 | d | 33.97 | 24.40 | a | 44.44 | ||||||
1968 | 27.67 | a | 27.31 | 37.04 | d | 40.90 | 51.03 | 60.93 | 64.61 | 63.68 | 53.73 | 46.74 | 34.77 | 24.29 | 44.39 | |||||||||||
1969 | 28.26 | 28.82 | 27.68 | 45.60 | 54.00 | 60.47 | 68.29 | 66.06 | 58.70 | 43.19 | 34.00 | 29.68 | 45.40 | |||||||||||||
1970 | 22.03 | a | 29.14 | 30.97 | 42.73 | 52.29 | 60.33 | 65.97 | 64.23 | 57.27 | 40.68 | 32.69 | a | 28.90 | 43.94 | |||||||||||
1971 | 23.84 | 24.11 | a | 31.52 | 42.53 | 50.68 | 62.60 | 65.10 | 60.90 | 55.37 | 46.61 | 36.70 | 29.26 | 44.10 | ||||||||||||
1972 | 22.84 | 26.59 | 36.77 | 46.23 | 52.16 | 60.83 | ----- | z | 61.68 | 57.93 | 45.71 | 29.40 | 22.42 | 42.05 | a | |||||||||||
1973 | 22.81 | 26.07 | 35.35 | 38.07 | 49.26 | 59.03 | 64.06 | 62.61 | 56.23 | 47.16 | 35.33 | 24.43 | a | 43.37 | ||||||||||||
1974 | 23.81 | 25.43 | 38.87 | 44.50 | 56.13 | a | 60.53 | 65.33 | a | 62.03 | a | 50.93 | 47.06 | 35.27 | 26.48 | 44.70 | ||||||||||
1975 | 24.97 | 24.81 | a | 28.58 | 39.57 | 49.90 | a | 61.73 | 62.71 | 62.32 | 51.97 | 43.71 | 32.37 | 26.03 | 42.39 | |||||||||||
1976 | 21.16 | 32.97 | 33.97 | 47.63 | 49.77 | 60.60 | 63.10 | 62.32 | 56.00 | b | 38.93 | a | 28.80 | 23.81 | 43.26 | |||||||||||
1977 | 18.61 | 29.37 | a | 32.13 | 45.67 | 56.74 | 62.43 | 65.26 | 64.00 | 57.60 | 47.23 | 34.00 | 27.17 | b | 45.02 | |||||||||||
1978 | 19.42 | 23.39 | 34.23 | 46.60 | 53.74 | 62.40 | 65.55 | 61.45 | 56.03 | 43.45 | 35.17 | 19.77 | 43.43 | |||||||||||||
1979 | 15.77 | 22.18 | 30.90 | 41.66 | a | 50.48 | b | 57.34 | a | 64.77 | 60.61 | 55.83 | a | 44.65 | 29.38 | a | 25.42 | 41.58 | ||||||||
1980 | 25.32 | 25.79 | 28.80 | a | 37.48 | a | 50.35 | 64.25 | b | 65.97 | 64.96 | d | 59.33 | 43.28 | b | 33.62 | a | 29.84 | 44.08 | |||||||
1981 | 25.74 | 25.82 | 34.33 | a | 44.80 | 51.71 | 61.83 | 66.10 | 62.87 | 56.47 | 46.58 | 35.90 | 28.03 | 45.02 | ||||||||||||
1982 | 23.24 | b | 22.60 | c | 32.86 | b | 40.17 | a | 50.90 | a | 58.57 | b | 65.43 | a | 64.97 | 57.76 | a | 41.19 | 33.30 | c | 25.55 | 43.05 | ||||
1983 | 19.74 | 28.36 | 32.27 | a | 35.35 | d | 46.73 | a | 56.14 | a | 64.68 | 63.42 | 57.69 | a | 48.77 | 36.93 | b | 17.86 | b | 42.33 | ||||||
1984 | 21.93 | a | 25.03 | 28.83 | a | 37.74 | c | 51.10 | a | 62.34 | a | 63.29 | 62.68 | 52.53 | 44.03 | b | 35.30 | 29.25 | c | 42.84 | ||||||
1985 | 21.03 | b | 25.36 | c | 35.79 | c | 43.79 | a | 51.73 | a | 59.69 | a | 61.87 | 64.68 | 56.73 | 45.00 | 32.31 | a | 20.32 | 43.19 | ||||||
1986 | ----- | z | 28.89 | 35.03 | b | 43.97 | 50.32 | 60.53 | 65.06 | 62.42 | 57.70 | 45.06 | 32.23 | 26.90 | 46.19 | a | ||||||||||
1987 | 22.42 | 29.86 | 28.74 | 37.07 | a | 52.58 | 60.03 | 64.29 | 61.26 | 54.34 | a | 43.35 | 31.37 | 21.90 | 42.27 | |||||||||||
1988 | 20.06 | 23.69 | 30.32 | 39.36 | b | 50.77 | a | 60.30 | 64.19 | 63.45 | 53.87 | 43.68 | 32.30 | 24.00 | 42.17 | |||||||||||
1989 | 24.84 | 24.54 | 32.87 | a | 43.90 | 53.65 | 58.80 | 62.68 | 63.00 | 51.83 | 42.06 | 28.87 | 18.00 | 42.09 | ||||||||||||
1990 | 22.94 | 26.25 | 33.90 | 42.63 | 49.13 | 65.47 | 63.55 | 61.17 | a | 57.76 | a | 42.65 | 34.77 | 19.84 | 43.34 | |||||||||||
1991 | 23.16 | 27.93 | 33.29 | 40.40 | 54.16 | 61.69 | a | 64.13 | 62.81 | 54.48 | a | 41.42 | 29.24 | a | 28.55 | 43.44 | ||||||||||
1992 | 24.71 | 31.10 | 33.97 | 44.57 | 51.68 | 58.90 | a | 64.00 | b | 61.35 | 53.60 | 41.44 | d | 28.31 | a | 23.94 | 43.13 | |||||||||
1993 | 23.63 | d | 24.85 | a | 31.00 | c | ----- | z | 52.14 | b | 62.21 | b | 67.41 | b | 62.25 | c | 52.50 | d | 40.77 | a | 28.30 | c | 22.97 | b | 42.55 | a |
1994 | 20.32 | 20.65 | b | 32.93 | a | 39.07 | a | 53.45 | 63.55 | a | 64.50 | a | 62.97 | 54.27 | 43.28 | b | 33.11 | b | 26.90 | b | 42.92 | |||||
1995 | 25.27 | a | 28.44 | a | 32.84 | 40.12 | d | 50.14 | c | 60.61 | b | 63.71 | 64.17 | a | 56.10 | 40.83 | b | 32.00 | ----- | z | 44.93 | a | ||||
1996 | 19.16 | 27.14 | a | 27.86 | b | 38.79 | a | 58.00 | a | 63.28 | a | 65.93 | c | 64.03 | 53.61 | b | 43.27 | a | 31.53 | 23.55 | 43.01 | |||||
1997 | 21.65 | 26.04 | a | 29.97 | b | 37.38 | a | 50.93 | a | 59.10 | a | 63.32 | 62.65 | 58.24 | a | 42.97 | 29.30 | 22.38 | b | 41.99 | ||||||
1998 | 25.93 | a | 29.14 | 30.23 | a | 38.23 | 54.50 | c | 60.90 | a | 66.60 | a | 63.03 | 57.90 | 48.66 | b | 35.77 | 25.81 | 44.72 | |||||||
1999 | 24.57 | c | 28.71 | 34.87 | 40.37 | c | 50.42 | 60.69 | a | 65.23 | 63.94 | 53.79 | a | 40.33 | a | 33.82 | b | 24.03 | b | 43.40 | ||||||
2000 | 23.48 | 29.17 | 33.74 | 42.22 | c | 54.30 | a | 62.24 | a | 63.80 | a | 63.66 | b | 54.44 | c | 47.93 | c | 27.04 | b | 19.86 | b | 43.49 | ||||
2001 | 24.36 | c | 29.00 | 35.32 | 46.47 | 54.23 | 63.90 | a | 69.13 | 65.77 | 57.21 | b | 43.93 | b | 38.79 | b | 28.37 | a | 46.37 | |||||||
2002 | 27.36 | c | 26.22 | a | 28.10 | b | 46.59 | a | 52.18 | c | 63.07 | 66.39 | 66.39 | 57.69 | a | 45.96 | c | 34.20 | 29.19 | 45.28 | ||||||
2003 | 26.52 | 26.71 | 35.58 | 44.83 | 53.42 | 58.65 | d | 67.60 | a | 67.06 | 56.47 | 50.10 | a | 35.85 | c | 27.55 | 45.86 | |||||||||
2004 | 27.87 | a | 27.11 | a | 42.13 | 44.97 | 55.40 | a | 60.67 | 64.27 | a | 61.61 | 57.17 | a | 48.23 | 35.76 | a | 27.06 | 46.02 | |||||||
2005 | 29.50 | a | 32.08 | b | 33.20 | a | 42.43 | 53.39 | 62.37 | 64.16 | 64.10 | 59.55 | a | 46.35 | 32.77 | 25.06 | 45.41 | |||||||||
2006 | 28.94 | 25.79 | 35.57 | c | 46.20 | 55.48 | 62.50 | 65.78 | d | 65.29 | 53.87 | 45.45 | 34.60 | 26.90 | a | 45.53 | ||||||||||
2007 | 22.77 | 25.86 | 39.58 | 38.80 | 52.83 | b | 59.27 | 63.17 | a | 65.32 | 59.40 | 45.32 | 33.37 | 27.13 | 44.40 | |||||||||||
2008 | 22.97 | a | 27.55 | 32.97 | 39.47 | 51.68 | 63.41 | a | 64.71 | 62.81 | 53.80 | 44.29 | 33.03 | 25.29 | 43.50 | |||||||||||
2009 | 23.35 | 30.25 | 34.87 | 40.47 | 52.29 | 62.73 | 65.81 | 63.55 | 54.70 | 42.00 | 34.97 | 21.97 | a | 43.91 | ||||||||||||
2010 | 22.74 | 25.86 | 33.59 | b | 43.52 | a | 51.79 | b | 64.73 | 65.06 | 63.93 | a | 59.14 | a | 45.87 | 31.07 | 28.35 | 44.64 | ||||||||
2011 | 20.84 | 21.25 | 36.26 | 43.47 | 50.87 | 65.77 | 69.58 | 69.81 | 56.03 | 44.84 | 33.27 | 26.65 | 44.89 | |||||||||||||
2012 | 26.32 | 28.59 | 38.52 | 47.30 | 54.81 | 64.07 | 66.29 | 65.55 | 57.10 | 43.26 | 35.33 | 25.81 | 46.08 | |||||||||||||
2013 | 25.58 | 25.57 | 32.32 | 36.90 | 51.35 | 63.90 | 64.32 | 63.39 | 58.27 | 41.90 | 29.63 | 22.94 | 43.01 | |||||||||||||
2014 | 17.97 | 23.39 | 27.06 | 37.83 | 49.16 | 62.87 | 65.06 | 63.00 | 59.77 | 45.06 | 27.17 | 27.84 | 42.18 | |||||||||||||
2015 | 24.10 | 25.39 | 32.58 | 41.83 | 50.81 | 62.13 | 65.45 | 63.10 | 59.23 | 49.26 | 33.47 | 27.13 | 44.54 | |||||||||||||
2016 | 25.61 | 27.14 | 34.74 | 40.27 | 49.29 | 62.03 | 65.94 | 61.19 | 57.17 | 45.10 | 35.13 | 22.52 | 43.84 | |||||||||||||
2017 | 25.16 | 29.29 | 35.65 | 44.27 | 49.16 | 62.23 | 64.94 | 62.42 | 54.93 | 42.87 | 34.63 | 22.81 | 44.03 | |||||||||||||
2018 | 15.87 | 23.64 | 33.94 | 37.63 | 57.35 | 64.63 | 65.52 | 63.32 | 56.83 | 46.19 | 28.80 | 24.45 | 43.18 | |||||||||||||
2019 | 23.26 | 24.04 | 31.74 | 41.10 | 50.71 | 60.20 | 64.81 | 65.23 | 61.30 | 39.06 | 28.13 | 26.90 | 43.04 | |||||||||||||
2020 | 24.29 | 23.86 | 38.94 | 40.20 | 52.03 | 62.67 | 67.84 | 64.35 | 51.03 | 38.68 | 35.20 | 21.71 | 43.40 | |||||||||||||
2021 | 23.71 | 18.75 | 31.23 | 38.80 | 52.68 | 63.43 | 64.61 | 63.77 | 55.67 | 43.71 | 31.07 | 27.94 | 42.95 | |||||||||||||
2022 | 18.16 | 17.18 | 27.74 | 39.83 | 51.81 | 63.93 | 68.00 | 64.48 | 57.40 | 44.87 | 29.63 | 24.26 | 42.28 | |||||||||||||
2023 | 24.55 | 24.89 | 31.35 | 37.07 | 53.13 | 60.93 | 65.84 | 65.74 | 58.27 | 44.35 | 32.53 | 26.19 | 43.74 | |||||||||||||
2024 | 20.32 | 28.79 | 32.55 | 41.73 | 51.25 | s | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 30.85 | h | ||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 23.26 | 26.26 | 33.22 | 41.77 | 52.12 | 61.64 | 65.24 | 63.51 | 56.15 | 44.22 | 32.79 | 25.06 | 43.78 | |||||||||||||
S.D. | 3.00 | 3.01 | 3.31 | 3.36 | 2.24 | 2.02 | 1.63 | 1.70 | 2.37 | 2.61 | 2.78 | 2.99 | 1.18 | |||||||||||||
SKEW | -0.36 | -0.48 | 0.26 | 0.24 | 0.49 | -0.30 | 0.67 | 0.95 | -0.29 | 0.02 | -0.35 | -0.48 | 0.33 | |||||||||||||
MAX | 29.50 | 32.97 | 42.13 | 49.90 | 58.00 | 65.77 | 69.58 | 69.81 | 61.30 | 50.10 | 38.79 | 29.84 | 46.37 | |||||||||||||
MIN | 15.77 | 17.18 | 27.06 | 35.35 | 46.73 | 56.14 | 61.87 | 60.61 | 50.93 | 38.68 | 27.04 | 17.86 | 41.58 | |||||||||||||
YRS | 57 | 58 | 58 | 57 | 57 | 57 | 57 | 58 | 58 | 58 | 58 | 57 | 53 |