YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1967 | ----- | z | ----- | z | 44.71 | 50.62 | b | 54.56 | 62.71 | a | 71.08 | 67.44 | 60.78 | 51.21 | 36.50 | 24.32 | 52.39 | b | ||||||||
1968 | 27.13 | 34.12 | 41.17 | a | 42.88 | 54.33 | a | 69.64 | a | 72.85 | 69.34 | 61.67 | 52.79 | 36.92 | 28.81 | 49.30 | ||||||||||
1969 | 31.75 | a | 35.15 | a | 34.60 | a | 54.28 | 61.50 | 63.55 | 74.66 | 74.45 | a | 65.38 | 41.71 | 38.87 | 32.48 | a | 50.70 | ||||||||
1970 | 31.98 | 39.27 | 35.56 | 45.80 | 61.44 | 66.32 | 73.33 | a | 73.31 | 60.17 | 46.63 | 39.95 | 30.35 | 50.34 | ||||||||||||
1971 | 27.27 | a | 31.32 | 38.29 | 49.05 | 55.75 | a | 69.80 | 71.78 | b | 71.85 | 58.12 | 50.02 | a | 38.47 | 30.48 | 49.35 | |||||||||
1972 | 26.90 | a | 36.64 | 46.55 | 50.73 | 57.74 | b | 69.75 | b | 72.16 | b | 71.75 | a | 62.25 | 51.37 | 31.60 | 21.37 | 49.90 | ||||||||
1973 | 24.45 | a | 31.08 | b | 39.21 | b | 44.67 | 58.10 | b | 69.25 | 72.05 | 73.68 | 60.38 | 55.10 | a | 36.50 | a | 30.50 | a | 49.58 | ||||||
1974 | 23.82 | 36.57 | a | 44.19 | 49.87 | 62.89 | 69.85 | 74.78 | a | 68.58 | 59.15 | 52.32 | 39.50 | a | 31.39 | 51.08 | ||||||||||
1975 | 31.97 | b | 32.82 | 39.57 | a | 46.13 | 56.39 | 66.04 | b | 73.26 | 71.56 | 60.60 | 52.66 | 36.02 | 32.03 | b | 49.92 | |||||||||
1976 | 26.71 | b | 38.43 | 37.13 | a | 49.35 | 58.08 | 65.61 | c | 73.75 | a | 70.16 | 61.05 | b | 48.73 | 35.50 | b | 33.24 | 49.81 | |||||||
1977 | 26.42 | a | 37.31 | b | 39.92 | 51.37 | 62.23 | 73.03 | 75.18 | 70.44 | 66.65 | 53.44 | 39.45 | 33.21 | 52.39 | |||||||||||
1978 | 22.97 | 27.80 | 43.10 | b | 50.81 | a | 55.45 | 67.63 | 73.85 | 69.21 | b | 63.85 | 50.70 | a | 35.98 | 20.19 | 48.46 | |||||||||
1979 | 15.87 | 31.34 | 41.10 | 50.66 | b | 54.71 | 66.37 | 73.74 | 68.71 | 64.78 | 52.53 | 31.17 | 28.73 | 48.31 | ||||||||||||
1980 | 21.35 | 27.50 | 35.13 | a | 46.77 | 56.02 | 70.53 | 76.02 | 71.48 | 64.98 | 50.05 | 39.38 | 39.02 | b | 49.85 | |||||||||||
1981 | 33.69 | 33.57 | 40.50 | 54.87 | 56.00 | 69.73 | 74.10 | 69.63 | 66.12 | 49.84 | 43.07 | 32.02 | 51.93 | |||||||||||||
1982 | 27.75 | a | 31.11 | 41.44 | 47.72 | 56.33 | a | 63.37 | 72.08 | 73.08 | 60.98 | 49.31 | 35.17 | 30.02 | a | 49.03 | ||||||||||
1983 | 32.95 | 37.25 | 38.77 | 41.77 | 52.76 | 63.82 | 72.92 | 75.05 | 64.02 | 52.66 | 36.57 | 16.15 | 48.72 | |||||||||||||
1984 | 21.42 | 31.90 | 37.48 | 42.80 | 60.34 | 66.38 | 74.25 | a | 72.10 | 59.67 | a | 45.35 | 39.17 | 29.05 | 48.33 | |||||||||||
1985 | 22.85 | a | 25.59 | 41.53 | 51.68 | 60.05 | 67.64 | a | 72.98 | 70.73 | 58.20 | 48.60 | 27.00 | 22.50 | 47.45 | |||||||||||
1986 | 31.91 | b | 34.55 | 47.13 | 50.03 | 57.60 | 70.15 | 73.24 | 71.74 | 60.52 | 49.07 | a | 37.20 | 29.81 | 51.08 | |||||||||||
1987 | 31.03 | b | 36.30 | 37.58 | 52.10 | 59.85 | 69.25 | 74.05 | 69.71 | 61.82 | 51.05 | a | 39.35 | 27.72 | b | 50.82 | ||||||||||
1988 | 20.76 | 33.31 | b | 38.53 | a | 50.15 | 59.35 | 72.47 | 73.67 | a | 73.00 | 61.93 | a | 53.73 | 40.04 | b | 27.18 | 50.34 | ||||||||
1989 | 31.26 | 21.20 | a | 41.79 | 50.59 | a | 59.82 | 65.22 | 74.35 | 69.82 | 60.47 | a | 50.19 | 40.45 | 25.05 | 49.18 | ||||||||||
1990 | 32.94 | 31.80 | 39.34 | 49.82 | 56.13 | 71.93 | 70.35 | 70.47 | 66.45 | 50.23 | 40.68 | 22.30 | a | 50.20 | ||||||||||||
1991 | 24.53 | 38.36 | 42.42 | 48.30 | 60.74 | 69.80 | 72.98 | 71.79 | 62.70 | 50.27 | 34.24 | a | 32.06 | 50.68 | ||||||||||||
1992 | 29.58 | 39.79 | 43.24 | 54.55 | 59.85 | 66.03 | 69.44 | 67.44 | 64.45 | 52.71 | 33.13 | 21.71 | 50.16 | |||||||||||||
1993 | 21.29 | 26.39 | a | 42.19 | 48.03 | 59.37 | 65.52 | 71.19 | 69.55 | 59.33 | 48.97 | 32.92 | 31.92 | 48.06 | ||||||||||||
1994 | 32.25 | a | 26.96 | 44.02 | 49.00 | 62.57 | a | 72.87 | 72.35 | 73.05 | 65.35 | 50.25 | a | 36.07 | 32.35 | 51.42 | ||||||||||
1995 | 30.37 | 35.66 | 41.63 | 44.58 | 51.63 | 64.00 | 72.77 | 75.45 | 62.30 | 49.84 | 42.59 | a | 32.87 | 50.31 | ||||||||||||
1996 | 26.76 | 33.26 | 38.45 | 50.23 | 59.66 | 69.75 | 72.98 | 72.10 | 61.75 | 51.74 | 37.27 | 32.97 | 50.58 | |||||||||||||
1997 | 25.08 | 32.52 | 43.68 | 43.95 | a | 59.42 | 69.42 | 74.60 | 71.02 | 66.00 | 51.50 | a | 36.48 | 31.24 | 50.41 | |||||||||||
1998 | 32.48 | a | 36.59 | 39.29 | 48.83 | 61.69 | 64.58 | 76.10 | 73.69 | 68.80 | 51.50 | a | 42.73 | 27.79 | 52.01 | |||||||||||
1999 | 34.97 | 40.78 | a | 45.44 | 45.91 | a | 57.68 | 67.22 | 75.74 | 72.65 | a | 59.88 | 52.19 | 45.02 | a | 35.98 | a | 52.79 | ||||||||
2000 | 33.79 | 39.71 | 42.06 | 52.50 | 61.87 | 68.12 | a | 76.73 | 75.24 | b | 63.02 | 50.74 | 31.03 | 27.47 | 51.86 | |||||||||||
2001 | 30.44 | 28.77 | 40.63 | 50.42 | 57.84 | 69.88 | 76.52 | 73.69 | 66.03 | 51.06 | 41.68 | 32.87 | 51.65 | |||||||||||||
2002 | 29.29 | 34.54 | 36.79 | b | 52.30 | 58.72 | a | 72.93 | 77.68 | 72.55 | a | 64.73 | 45.05 | 36.78 | 32.85 | 51.18 | ||||||||||
2003 | 35.77 | 30.34 | 43.88 | a | 52.30 | 59.87 | 65.82 | 80.26 | 76.58 | 61.28 | 54.90 | 36.28 | a | 30.77 | a | 52.34 | ||||||||||
2004 | 30.57 | c | 32.07 | a | 48.85 | d | 52.90 | f | 63.65 | h | 67.50 | g | 73.72 | d | 72.58 | f | 66.50 | f | 54.40 | g | 37.54 | f | 34.86 | b | 44.02 | g |
2005 | 34.34 | i | 39.09 | 45.09 | b | 51.05 | b | 59.85 | a | 68.22 | a | 76.84 | l | 72.12 | g | 67.93 | b | 54.37 | d | 43.39 | c | 28.79 | c | 50.86 | c | |
2006 | 38.00 | d | 31.18 | c | 38.96 | c | 55.92 | 63.52 | b | 76.14 | b | 79.03 | 75.06 | e | 61.12 | e | 51.32 | a | 40.22 | 29.00 | b | 53.29 | ||||
2007 | 19.66 | c | 27.50 | a | 48.48 | 51.08 | 62.37 | a | 71.13 | 78.37 | a | 75.86 | b | 67.19 | a | 56.41 | b | 42.28 | a | 23.74 | 52.01 | |||||
2008 | 24.23 | a | 35.87 | b | 44.25 | a | 50.05 | b | 60.57 | a | 69.98 | 78.29 | c | 72.60 | a | 64.13 | 53.58 | 45.28 | 27.69 | 52.21 | ||||||
2009 | 35.31 | 39.66 | 45.29 | 50.62 | 62.76 | 67.13 | 73.44 | 72.02 | 65.65 | 46.13 | 41.58 | 23.82 | 51.95 | |||||||||||||
2010 | 30.10 | 31.36 | 44.50 | 51.35 | 56.79 | 71.12 | 76.71 | 75.61 | 68.43 | a | 57.84 | 39.15 | 35.45 | 53.20 | ||||||||||||
2011 | 29.92 | 31.07 | a | 45.95 | 51.45 | a | 56.66 | 71.14 | a | 78.19 | 76.53 | 65.36 | a | 53.52 | 41.12 | 27.69 | 52.38 | |||||||||
2012 | 36.52 | 32.95 | 50.94 | 57.68 | 63.05 | 75.67 | 78.94 | 75.80 | a | 68.02 | 50.45 | a | 41.59 | a | 31.92 | 55.29 | ||||||||||
2013 | 29.13 | 31.96 | 40.18 | 44.80 | 60.47 | 72.37 | 74.42 | 74.23 | 67.92 | 50.82 | 41.23 | 28.58 | 51.34 | |||||||||||||
2014 | 32.05 | 27.23 | 43.55 | 52.17 | 59.10 | 68.48 | 73.81 | 71.26 | b | 65.62 | 55.87 | 36.23 | 30.94 | 51.36 | ||||||||||||
2015 | 33.06 | 36.79 | 47.76 | 51.72 | 55.00 | 71.35 | 73.79 | 73.79 | 69.40 | 57.10 | 38.70 | 27.92 | 53.03 | |||||||||||||
2016 | 28.98 | 38.22 | 44.40 | 51.03 | 56.31 | 73.27 | 76.06 | 71.84 | 67.23 | 58.34 | 46.70 | 26.11 | 53.21 | |||||||||||||
2017 | 29.87 | 42.07 | 50.42 | 52.33 | 57.81 | 70.47 | 76.29 | 70.52 | a | 65.28 | a | 52.21 | 45.23 | 32.07 | a | 53.71 | ||||||||||
2018 | 33.42 | 30.80 | 45.05 | 50.38 | 62.97 | 72.60 | 74.73 | 72.27 | 68.73 | 50.69 | 38.80 | 30.85 | 52.61 | |||||||||||||
2019 | 32.48 | 27.98 | 36.30 | d | 52.37 | 53.19 | 66.35 | 74.29 | 74.19 | d | 70.12 | 47.73 | 39.97 | 32.53 | 50.62 | |||||||||||
2020 | 36.69 | 33.17 | 45.08 | 50.07 | 62.84 | 73.35 | 77.98 | 77.82 | 66.73 | 50.23 | 44.17 | a | 33.89 | 54.34 | ||||||||||||
2021 | 33.74 | 27.64 | 42.61 | 50.05 | 60.03 | 73.82 | 77.61 | 75.48 | 70.53 | 55.56 | 47.77 | 38.81 | 54.47 | |||||||||||||
2022 | 28.65 | 29.70 | 43.55 | 52.80 | 60.81 | 72.78 | 79.73 | 77.21 | 69.80 | 55.08 | a | 36.60 | a | 28.84 | 52.96 | |||||||||||
2023 | 27.16 | 31.12 | 39.18 | 51.45 | 62.37 | 67.33 | 74.37 | 73.98 | 68.48 | 54.68 | 43.63 | 38.60 | 52.70 | |||||||||||||
2024 | 29.68 | 39.17 | 44.70 | c | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 37.85 | i | ||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 29.12 | 33.27 | 42.12 | 49.89 | 58.84 | 69.08 | 74.64 | 72.51 | 64.17 | 51.46 | 38.83 | 29.70 | 51.11 | |||||||||||||
S.D. | 4.79 | 4.48 | 3.78 | 3.27 | 2.96 | 3.23 | 2.42 | 2.50 | 3.38 | 3.18 | 4.14 | 4.59 | 1.75 | |||||||||||||
SKEW | -0.53 | -0.17 | 0.14 | -0.50 | -0.38 | -0.01 | 0.41 | 0.04 | 0.05 | -0.32 | -0.27 | -0.51 | 0.10 | |||||||||||||
MAX | 38.00 | 42.07 | 50.94 | 57.68 | 63.52 | 76.14 | 80.26 | 77.82 | 70.53 | 58.34 | 47.77 | 39.02 | 55.29 | |||||||||||||
MIN | 15.87 | 21.20 | 34.60 | 41.77 | 51.63 | 62.71 | 69.44 | 67.44 | 58.12 | 41.71 | 27.00 | 16.15 | 47.45 | |||||||||||||
YRS | 56 | 57 | 58 | 56 | 56 | 56 | 56 | 55 | 56 | 56 | 56 | 57 | 54 |