YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1966 | ----- | z | ----- | z | ----- | z | 48.27 | 61.61 | 68.55 | 77.48 | 73.61 | 64.58 | 49.56 | 42.28 | 24.06 | 56.67 | c | |||||||||
1967 | 27.66 | 37.18 | 44.10 | 42.17 | 55.44 | 62.07 | 76.11 | 74.79 | e | 63.95 | 52.68 | 41.37 | 24.47 | 50.16 | ||||||||||||
1968 | 26.87 | a | 38.76 | 42.21 | 45.00 | 55.81 | 67.40 | 75.03 | a | 67.48 | 60.17 | 50.66 | 37.74 | a | 29.70 | d | 49.74 | |||||||||
1969 | 36.68 | c | 31.76 | a | 37.15 | 50.23 | b | 63.32 | 66.05 | j | 75.42 | 76.69 | 65.53 | 47.93 | a | 34.92 | 32.45 | l | 51.96 | b | ||||||
1970 | 30.98 | 37.21 | ----- | z | 41.67 | 56.71 | 65.85 | 73.37 | 75.85 | a | 58.42 | 47.05 | 39.55 | 26.00 | a | 50.24 | a | |||||||||
1971 | 31.98 | b | 32.52 | 40.63 | a | ----- | z | 55.45 | c | 66.48 | a | 75.61 | 73.95 | 58.85 | 46.32 | 37.22 | 27.65 | 49.70 | a | |||||||
1972 | 32.07 | a | 35.91 | 47.37 | 49.47 | 58.08 | 68.84 | a | 74.97 | 70.44 | 61.12 | 51.06 | 36.02 | 22.40 | 50.65 | |||||||||||
1973 | 22.50 | 35.09 | 37.39 | 45.43 | a | 59.48 | 67.80 | 74.23 | 73.66 | 60.77 | 52.13 | 40.17 | 34.34 | 50.25 | ||||||||||||
1974 | 29.47 | 33.54 | 45.87 | 47.42 | 59.76 | 70.72 | 75.42 | 71.32 | 63.00 | 49.50 | 39.53 | 27.56 | 51.09 | |||||||||||||
1975 | 27.87 | 33.89 | 38.71 | 42.55 | 54.02 | 63.80 | 74.44 | 69.47 | 61.40 | a | 50.76 | 37.03 | 32.18 | a | 48.84 | |||||||||||
1976 | 28.81 | 36.14 | 35.52 | a | 47.17 | d | 60.82 | 65.67 | 75.60 | 68.39 | 61.86 | a | 48.53 | 38.82 | 26.68 | 49.50 | ||||||||||
1977 | 26.57 | a | 34.05 | 36.89 | 51.12 | 53.89 | 72.10 | d | 74.18 | 72.85 | 64.48 | 52.76 | b | 42.87 | 38.11 | 51.66 | ||||||||||
1978 | 33.52 | 37.69 | a | 46.13 | a | 48.44 | c | 55.13 | 67.57 | 74.58 | 70.34 | 60.38 | b | 53.29 | 36.20 | 25.58 | 50.74 | |||||||||
1979 | 19.97 | 33.20 | 40.73 | 49.50 | 57.42 | a | 67.35 | 74.71 | c | 71.52 | b | 66.52 | 54.62 | b | 33.62 | b | 32.94 | 50.17 | ||||||||
1980 | 31.84 | c | 34.10 | 40.43 | a | 50.69 | c | ----- | z | 66.48 | b | 76.19 | 72.71 | 63.60 | 50.11 | 40.58 | 31.24 | 50.73 | a | |||||||
1981 | 31.10 | 36.23 | 40.97 | 52.20 | 57.08 | a | 70.48 | 77.02 | 74.37 | 65.53 | 48.66 | 43.17 | 36.02 | 52.74 | ||||||||||||
1982 | 28.95 | a | 32.10 | b | 41.23 | 46.37 | d | 56.18 | a | 64.65 | 72.78 | a | 75.16 | 61.91 | a | 46.72 | a | 36.78 | a | 30.40 | 49.44 | |||||
1983 | 32.43 | a | 36.46 | a | 42.00 | d | 44.07 | c | 53.89 | c | 65.28 | c | 73.05 | c | 72.18 | a | 64.72 | 52.71 | b | 38.63 | 30.94 | 50.53 | ||||
1984 | 20.32 | a | 27.79 | 38.52 | b | 46.53 | a | 61.26 | h | 65.38 | e | 74.09 | b | 72.43 | a | 64.31 | a | 45.75 | a | 38.02 | 24.47 | 47.06 | a | |||
1985 | 22.73 | a | 25.62 | b | 38.50 | 51.98 | a | 59.25 | c | 70.76 | a | 75.73 | 71.84 | c | 58.43 | c | 49.40 | 34.87 | 23.68 | 48.56 | ||||||
1986 | 33.57 | b | 40.30 | 46.19 | 49.02 | 58.04 | h | 71.67 | 72.71 | 74.85 | 58.79 | a | 48.42 | g | 39.93 | b | 27.40 | a | 51.44 | b | ||||||
1987 | 17.16 | b | 34.62 | 40.18 | a | 53.05 | a | 58.87 | a | 69.62 | 72.11 | 71.44 | 62.34 | a | 53.17 | a | 37.27 | b | 25.50 | a | 49.61 | |||||
1988 | 20.76 | 34.57 | 39.38 | c | 50.33 | c | 56.81 | d | 70.17 | 76.63 | a | 72.05 | c | 61.04 | b | 56.68 | 40.24 | c | 23.16 | 50.15 | ||||||
1989 | 22.50 | 23.85 | a | 52.65 | e | 57.26 | a | 58.95 | a | 65.05 | a | 77.56 | 72.29 | b | 62.24 | c | 51.55 | b | 36.80 | c | 26.97 | b | 50.64 | |||
1990 | 30.63 | e | 24.35 | b | 48.20 | d | 59.90 | a | 60.61 | d | 67.88 | b | 76.61 | c | 72.14 | b | 67.47 | 51.89 | c | 38.16 | a | 19.12 | c | 51.41 | ||
1991 | 24.42 | f | 36.75 | 36.17 | h | 45.73 | d | 54.30 | a | 66.80 | 75.40 | 74.41 | c | 62.17 | 52.21 | c | 39.48 | h | 20.12 | j | 58.47 | d | ||||
1992 | 22.74 | 36.38 | d | 45.44 | f | 55.31 | c | 62.74 | 66.97 | 72.98 | 75.04 | c | 64.69 | a | 55.10 | b | 32.81 | d | 26.11 | c | 51.90 | a | ||||
1993 | 21.00 | c | 26.80 | 43.38 | a | 49.91 | b | 61.10 | b | 64.42 | 71.95 | a | 72.98 | b | 63.08 | 49.76 | 32.87 | 29.00 | a | 48.85 | ||||||
1994 | 33.05 | b | 33.69 | a | 45.10 | a | 50.57 | 60.65 | 72.27 | b | 76.79 | 75.90 | 66.29 | b | 50.20 | a | 34.90 | a | 32.11 | 52.63 | ||||||
1995 | ----- | z | 41.88 | 43.32 | 48.07 | b | 54.38 | a | 63.15 | c | 72.85 | a | 75.00 | b | 65.56 | c | 50.89 | d | 44.02 | 31.85 | a | 53.72 | a | |||
1996 | 33.52 | a | 35.45 | 43.20 | a | 50.84 | b | 59.18 | a | 70.48 | 76.40 | 73.77 | c | 62.33 | d | 51.52 | f | 41.28 | a | 36.17 | a | 52.96 | a | |||
1997 | 29.11 | 33.06 | b | 45.34 | c | 45.30 | c | 60.92 | 69.16 | b | 72.87 | 75.95 | ----- | z | 52.03 | a | 40.42 | 26.95 | 50.10 | a | ||||||
1998 | 37.05 | a | 33.61 | 40.40 | a | 46.34 | a | 56.12 | a | 63.12 | b | 75.24 | b | 74.00 | a | 64.93 | a | 48.56 | 41.67 | 25.53 | 50.55 | |||||
1999 | 34.03 | 37.36 | 43.88 | a | 43.88 | a | 56.66 | 67.43 | 76.00 | c | 72.78 | a | 61.47 | a | 53.15 | 43.36 | a | 28.87 | 51.57 | |||||||
2000 | 36.27 | 39.19 | 42.48 | 54.79 | a | 62.31 | b | 70.02 | a | 76.81 | 75.86 | c | 64.36 | a | 51.29 | b | 30.63 | 31.45 | a | 52.96 | ||||||
2001 | 23.57 | a | 33.93 | 45.03 | a | 49.33 | 63.08 | a | 70.85 | d | 75.43 | a | 75.74 | 66.76 | a | 54.57 | b | 39.20 | c | 25.94 | 51.95 | |||||
2002 | 29.07 | b | 30.15 | b | 38.65 | a | 52.48 | a | 58.58 | 70.93 | c | 79.04 | f | 71.75 | c | 63.04 | c | 47.41 | b | 34.85 | 32.06 | 48.09 | a | |||
2003 | 37.47 | 34.20 | a | 44.30 | a | 48.67 | a | 59.44 | 69.12 | b | 79.23 | a | 76.06 | d | 63.50 | c | 55.78 | b | 34.86 | a | 31.82 | 52.87 | ||||
2004 | 23.42 | a | 28.97 | 47.33 | b | 51.80 | 59.39 | c | 69.39 | b | 74.69 | 71.05 | b | 62.68 | e | 51.12 | e | 36.68 | 32.02 | a | 50.71 | |||||
2005 | 33.90 | 36.04 | 41.90 | a | 48.48 | 59.26 | 65.02 | b | ----- | z | 72.66 | 62.08 | 51.55 | b | 40.97 | a | 31.11 | 49.36 | a | |||||||
2006 | 33.26 | 32.64 | 38.62 | a | 52.33 | 60.92 | 71.23 | 77.73 | a | 73.32 | 60.43 | b | 49.91 | c | 40.30 | b | 26.03 | a | 51.39 | |||||||
2007 | 14.97 | b | 36.48 | 45.85 | 51.91 | b | 61.23 | 71.62 | d | 79.03 | 77.27 | a | 63.83 | a | 51.02 | c | 38.89 | b | 25.45 | b | 51.46 | |||||
2008 | 28.57 | c | 33.32 | a | 41.26 | b | 47.81 | d | 55.15 | a | 68.79 | b | 76.95 | a | 75.02 | a | 64.10 | 51.55 | 42.05 | 30.18 | 51.23 | |||||
2009 | 32.00 | 34.96 | 42.61 | 48.45 | 61.16 | 64.87 | 75.68 | ----- | z | 68.05 | ----- | z | ----- | z | ----- | z | 53.47 | d | ||||||||
2010 | ----- | z | ----- | z | 44.00 | u | 47.00 | 52.21 | c | 68.25 | b | 75.82 | 73.95 | 65.09 | a | 52.35 | 36.29 | a | 31.23 | 55.80 | c | |||||
2011 | 17.42 | 28.18 | 44.21 | 47.63 | 53.39 | 64.70 | c | 75.74 | 76.26 | 65.28 | 52.16 | 37.35 | 24.85 | 48.93 | ||||||||||||
2012 | 32.73 | 32.53 | 45.89 | 52.93 | 60.52 | 71.30 | 76.05 | 75.81 | 65.45 | 53.06 | 42.90 | 30.42 | 53.30 | |||||||||||||
2013 | 14.81 | 29.20 | 44.60 | 48.50 | 58.74 | 71.97 | 78.05 | 74.45 | 64.70 | 47.74 | 39.73 | 19.44 | 49.33 | |||||||||||||
2014 | 31.19 | 36.02 | 44.92 | 50.15 | 59.48 | 69.13 | 78.27 | 71.08 | 66.98 | 55.95 | 39.12 | 34.27 | 53.05 | |||||||||||||
2015 | 31.90 | 41.75 | 47.21 | 50.35 | 57.16 | 73.37 | 74.58 | 75.66 | 68.90 | 56.37 | 35.05 | 30.24 | 53.55 | |||||||||||||
2016 | 23.84 | 30.10 | 46.40 | 51.07 | 58.11 | 73.65 | 77.60 | 74.52 | 64.43 | a | 56.55 | 42.58 | 28.13 | 52.25 | ||||||||||||
2017 | 26.02 | 41.07 | 48.53 | 50.08 | 58.65 | 72.70 | 78.27 | 75.03 | 62.12 | 48.89 | 43.78 | 29.37 | a | 52.88 | ||||||||||||
2018 | 31.92 | 32.66 | 42.15 | 53.02 | 59.85 | 72.07 | 78.97 | 75.34 | 68.18 | 49.78 | a | 35.17 | 29.10 | 52.35 | ||||||||||||
2019 | 30.03 | 32.32 | 41.55 | 52.38 | 53.06 | 66.63 | 76.85 | 76.16 | 65.47 | 44.53 | 37.73 | 30.92 | 50.64 | |||||||||||||
2020 | 34.34 | 33.76 | 43.39 | 50.67 | 62.34 | 68.38 | a | 77.19 | 78.27 | 65.82 | 53.31 | 38.60 | 25.06 | 52.59 | ||||||||||||
2021 | 30.76 | 35.73 | 40.98 | 50.00 | 59.73 | 74.68 | 78.77 | 74.60 | 67.03 | 50.18 | 42.03 | 33.65 | 53.18 | |||||||||||||
2022 | 29.29 | 29.19 | a | 43.81 | 49.88 | 58.17 | a | 70.15 | 79.63 | 75.16 | 68.48 | 50.87 | 33.18 | 30.55 | 51.53 | |||||||||||
2023 | 26.69 | 24.86 | 36.60 | 49.05 | 59.13 | 65.42 | 79.16 | 73.73 | 65.60 | 51.45 | 38.83 | 31.47 | 50.17 | |||||||||||||
2024 | 32.03 | 37.53 | 41.22 | d | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 36.93 | i | ||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 28.42 | 33.80 | 42.69 | 49.38 | 58.29 | 68.41 | 75.83 | 73.69 | 63.76 | 51.14 | 38.46 | 28.76 | 51.09 | |||||||||||||
S.D. | 5.69 | 4.16 | 3.50 | 3.49 | 2.82 | 3.00 | 1.96 | 2.20 | 2.60 | 2.78 | 3.18 | 4.01 | 1.40 | |||||||||||||
SKEW | -0.68 | -0.48 | 0.18 | 0.20 | -0.28 | -0.06 | -0.04 | -0.56 | -0.16 | -0.03 | -0.22 | -0.12 | 0.03 | |||||||||||||
MAX | 37.47 | 41.88 | 52.65 | 59.90 | 63.32 | 74.68 | 79.63 | 78.27 | 68.90 | 56.68 | 44.02 | 38.11 | 53.55 | |||||||||||||
MIN | 14.81 | 23.85 | 35.52 | 41.67 | 52.21 | 62.07 | 71.95 | 67.48 | 58.42 | 44.53 | 30.63 | 19.13 | 48.56 | |||||||||||||
YRS | 55 | 57 | 54 | 57 | 55 | 57 | 56 | 57 | 57 | 55 | 56 | 55 | 42 |