YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1967 | ----- | z | 33.02 | c | 31.31 | 40.93 | 47.71 | 53.55 | 55.19 | 56.53 | 51.48 | 43.97 | 36.05 | b | 32.58 | a | 43.85 | a | ||||||||
1968 | 26.60 | a | 33.43 | a | 37.37 | 37.72 | 47.81 | 51.80 | 56.64 | b | 56.65 | 48.93 | 41.34 | 37.31 | a | 27.83 | e | 41.95 | ||||||||
1969 | 18.53 | 30.45 | 35.60 | a | 41.18 | 48.11 | 54.20 | 53.53 | 53.11 | 51.24 | a | 44.82 | 34.63 | c | 36.86 | b | 41.86 | |||||||||
1970 | 26.72 | b | 36.38 | c | 37.03 | 37.57 | a | 42.35 | a | 48.18 | b | 51.65 | 51.50 | 47.10 | 41.23 | 33.50 | 27.50 | 40.06 | ||||||||
1971 | 20.65 | 30.79 | 30.56 | o | 38.05 | h | 42.73 | c | 51.40 | o | 56.23 | c | 54.39 | 47.60 | a | 39.21 | 33.93 | 25.56 | 39.01 | c | ||||||
1972 | 21.13 | 24.64 | a | 29.32 | c | 34.42 | 44.39 | 47.93 | 56.02 | 53.50 | a | 47.09 | a | 37.03 | m | 36.52 | 29.03 | a | 38.54 | a | ||||||
1973 | 26.45 | 30.00 | 35.05 | 39.73 | 43.50 | e | 48.29 | d | 51.94 | 51.97 | 49.12 | 41.85 | g | ----- | z | ----- | z | 41.78 | c | |||||||
1974 | ----- | z | ----- | z | ----- | z | 41.78 | 47.27 | 51.57 | 57.76 | h | 57.35 | 54.17 | a | 44.65 | 37.95 | 36.58 | k | 47.82 | e | ||||||
1975 | 34.38 | r | 27.62 | 33.39 | 39.22 | a | 45.85 | e | 52.12 | f | 57.76 | 57.02 | i | 53.02 | f | 43.71 | 33.10 | d | ----- | z | 40.09 | e | ||||
1976 | ----- | z | 26.77 | r | 34.16 | 41.18 | b | 45.62 | a | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 40.32 | i | |
1977 | ----- | z | 40.71 | i | 37.08 | y | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 55.37 | 43.15 | 31.57 | 25.45 | 38.88 | h | ||||
1978 | 30.98 | 35.34 | 35.23 | 41.38 | 45.55 | 50.77 | 52.81 | 55.90 | 50.57 | 44.76 | 34.00 | 31.74 | 42.42 | |||||||||||||
1979 | 29.47 | 21.36 | 36.74 | 39.98 | 45.23 | 49.98 | 55.39 | 57.27 | 52.03 | 46.71 | 38.78 | 29.31 | 41.85 | |||||||||||||
1980 | 24.77 | 35.52 | 35.53 | 40.95 | 45.84 | 50.80 | 54.56 | 53.34 | 48.95 | 44.65 | 38.38 | 25.74 | 41.59 | |||||||||||||
1981 | 37.44 | 35.02 | 38.40 | 38.62 | 49.11 | 51.02 | 54.63 | 56.27 | 50.05 | 43.73 | 38.32 | 30.97 | 43.63 | |||||||||||||
1982 | 22.44 | 27.66 | 34.13 | a | 36.17 | 41.61 | 50.95 | 53.83 | a | 53.39 | 50.53 | 42.18 | 33.08 | 34.47 | 40.04 | |||||||||||
1983 | 33.31 | b | 34.57 | 37.56 | 41.42 | 47.00 | 52.68 | 54.94 | 54.73 | 48.12 | a | 41.45 | 35.68 | 27.63 | 42.42 | |||||||||||
1984 | 34.50 | a | 34.97 | 39.26 | 41.62 | 45.97 | a | 50.24 | a | 52.53 | 54.48 | 50.35 | 41.81 | 33.25 | 29.13 | 42.34 | ||||||||||
1985 | 37.73 | a | 30.66 | 34.81 | 36.90 | 42.69 | b | 48.27 | ----- | z | 53.17 | b | 50.27 | b | 40.23 | 24.11 | c | 33.60 | 39.31 | a | ||||||
1986 | 35.05 | 32.88 | 36.25 | a | 36.57 | 43.98 | a | 49.59 | a | 54.55 | a | 53.83 | b | 51.31 | a | 47.08 | 33.38 | 36.06 | 42.54 | |||||||
1987 | 34.52 | 35.84 | 33.17 | a | ----- | z | ----- | z | ----- | z | ----- | z | 56.10 | f | 50.60 | a | 43.67 | a | 39.60 | 33.94 | 38.76 | e | ||||
1988 | ----- | z | 34.09 | 36.78 | a | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 35.43 | j | |
1989 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1990 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1991 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1992 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1993 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1994 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1995 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1996 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1997 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1998 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1999 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2000 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2001 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2002 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 51.00 | b | 46.63 | 42.88 | b | 34.86 | b | 43.84 | h | |
2003 | 35.13 | a | 35.45 | 33.94 | 42.45 | 46.97 | 52.53 | 57.90 | 56.18 | 50.68 | 46.35 | 33.95 | 33.48 | a | 43.75 | |||||||||||
2004 | 28.50 | 36.39 | a | 36.15 | a | 41.03 | 49.81 | 55.45 | a | 58.58 | 61.47 | a | 50.98 | b | 42.84 | b | 37.43 | a | 34.79 | b | 44.45 | |||||
2005 | 29.70 | a | 33.06 | b | 38.36 | f | 44.14 | e | 52.39 | d | 54.20 | g | 56.59 | h | 57.81 | e | 51.91 | g | 42.17 | g | 37.30 | 36.16 | b | 41.51 | e | |
2006 | 31.97 | a | 31.98 | 30.71 | 39.22 | a | 45.63 | 53.05 | b | 54.98 | 53.97 | 51.32 | b | 43.23 | 25.92 | 34.82 | a | 41.40 | ||||||||
2007 | 31.28 | a | 30.46 | a | 29.75 | a | 38.88 | a | 44.11 | 52.60 | 54.81 | 56.85 | a | 50.91 | a | 41.45 | 36.13 | 29.65 | a | 41.41 | ||||||
2008 | 28.56 | 30.09 | 35.37 | 38.05 | 44.48 | 48.38 | 51.87 | 53.42 | 49.37 | 41.32 | 36.73 | 27.81 | 40.45 | |||||||||||||
2009 | 28.68 | 30.04 | 31.27 | 38.17 | a | 46.27 | 51.83 | a | 56.64 | c | 56.05 | 50.15 | c | 44.35 | 35.43 | 29.71 | 41.55 | |||||||||
2010 | 33.24 | 37.62 | 35.90 | 41.13 | 48.55 | 51.10 | 53.11 | 55.89 | 52.18 | 42.66 | 36.35 | 29.66 | 43.12 | |||||||||||||
2011 | 30.97 | 28.64 | 31.77 | 38.57 | 46.50 | 51.78 | 54.45 | 53.24 | 49.52 | 42.26 | 31.48 | 34.81 | 41.17 | |||||||||||||
2012 | 28.27 | 35.57 | 33.73 | 41.22 | 42.16 | 48.90 | 52.23 | 54.05 | 50.03 | 40.31 | 34.57 | 29.08 | 40.84 | |||||||||||||
2013 | 34.16 | 35.75 | b | 31.63 | 36.28 | 45.16 | 54.32 | b | 55.52 | 57.08 | 51.82 | 45.11 | 33.73 | 30.89 | 42.62 | |||||||||||
2014 | 38.13 | 27.41 | 32.95 | 39.80 | 49.55 | 50.92 | 55.82 | 56.02 | 52.63 | 44.56 | 36.87 | 36.24 | 43.41 | |||||||||||||
2015 | 36.92 | 34.16 | 37.69 | 39.95 | 49.73 | 54.70 | 56.23 | 56.05 | 50.18 | 46.10 | 36.92 | 34.16 | 44.40 | |||||||||||||
2016 | 37.60 | 37.81 | 40.66 | 44.08 | 49.52 | 54.02 | 57.61 | 57.92 | 52.13 | 43.35 | 38.58 | 29.95 | 45.27 | |||||||||||||
2017 | 31.94 | 32.45 | 29.03 | 42.20 | 45.87 | 51.45 | 54.55 | 55.89 | 51.45 | 43.02 | 32.23 | 34.44 | 42.04 | |||||||||||||
2018 | 32.81 | 28.64 | 34.16 | 40.40 | 46.23 | 51.40 | 56.19 | 56.48 | 51.90 | 47.21 | 40.08 | 35.03 | 43.38 | |||||||||||||
2019 | 33.11 | 27.29 | 37.84 | 41.20 | 48.76 | 53.62 | 57.92 | 57.37 | 52.50 | 42.50 | 41.05 | 37.15 | 44.19 | |||||||||||||
2020 | 26.89 | 33.55 | 32.71 | 38.83 | 48.44 | 50.62 | 55.85 | 55.63 | 50.67 | 42.53 | 33.75 | 37.42 | 42.24 | |||||||||||||
2021 | 35.19 | 28.96 | 33.24 | 39.58 | 44.52 | 52.72 | 54.65 | 55.94 | 50.37 | 40.85 | 35.40 | 25.45 | 41.41 | |||||||||||||
2022 | 30.00 | 34.73 | 36.47 | 38.55 | 45.71 | 54.50 | 55.90 | 56.87 | 51.65 | 46.63 | 34.48 | 29.32 | 42.90 | |||||||||||||
2023 | 36.50 | 31.43 | 31.84 | 38.92 | 47.11 | 51.93 | 56.15 | 58.05 | 51.23 | 45.34 | 38.98 | 35.89 | 43.61 | |||||||||||||
2024 | 31.32 | 33.22 | 35.35 | 39.21 | f | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 33.30 | i | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 30.82 | 32.17 | 34.58 | 39.74 | 46.24 | 51.55 | 55.09 | 55.52 | 50.69 | 43.51 | 35.45 | 31.75 | 42.40 | |||||||||||||
S.D. | 5.01 | 3.64 | 2.75 | 2.13 | 2.42 | 2.03 | 1.82 | 2.00 | 1.67 | 2.08 | 3.54 | 3.68 | 1.31 | |||||||||||||
SKEW | -0.61 | -0.75 | -0.12 | -0.22 | 0.17 | -0.08 | -0.16 | 0.29 | 0.08 | 0.06 | -0.91 | -0.17 | 0.17 | |||||||||||||
MAX | 38.13 | 37.81 | 40.66 | 44.14 | 52.39 | 55.45 | 58.58 | 61.47 | 55.37 | 47.21 | 42.88 | 37.42 | 45.27 | |||||||||||||
MIN | 18.53 | 21.36 | 29.03 | 34.42 | 41.61 | 47.93 | 51.65 | 51.50 | 47.09 | 39.21 | 24.11 | 25.45 | 40.04 | |||||||||||||
YRS | 38 | 41 | 40 | 39 | 40 | 36 | 36 | 38 | 40 | 39 | 41 | 39 | 31 |