YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1962 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 72.85 | a | 63.05 | 56.19 | 43.67 | a | 38.46 | q | 58.94 | h | ||
1963 | 21.68 | a | 38.08 | b | 39.52 | 50.47 | 60.97 | 68.07 | 74.75 | e | 68.21 | 65.92 | 58.34 | 42.70 | 31.40 | 51.67 | ||||||||||
1964 | 31.90 | 28.17 | 33.21 | 46.42 | 57.85 | 63.30 | 74.32 | a | 68.26 | 60.58 | 52.58 | 39.15 | 32.19 | b | 48.99 | |||||||||||
1965 | 35.40 | 29.59 | 27.39 | 50.28 | 56.13 | 63.13 | 71.18 | 68.03 | 54.00 | 56.32 | 45.72 | 37.92 | 49.59 | |||||||||||||
1966 | 30.66 | 29.71 | 43.68 | 45.95 | 60.27 | 65.92 | 74.66 | 68.63 | 63.17 | 52.10 | 42.15 | 32.50 | 50.78 | |||||||||||||
1967 | 35.84 | 36.00 | a | 44.31 | 48.48 | 52.13 | 60.45 | 69.61 | 67.89 | 62.05 | 53.73 | 40.50 | 27.95 | 49.91 | ||||||||||||
1968 | 32.89 | 35.19 | 41.70 | a | 43.48 | 53.58 | a | 67.23 | 69.97 | a | 68.05 | 60.93 | 53.32 | 36.70 | 31.97 | 49.58 | ||||||||||
1969 | 36.87 | 35.36 | 32.11 | 51.60 | 59.27 | 60.23 | 72.69 | 72.38 | b | 64.07 | 40.50 | 39.47 | a | 34.60 | 49.93 | |||||||||||
1970 | 30.95 | 39.88 | 34.08 | 44.12 | a | 60.12 | a | 65.57 | 72.48 | 73.87 | 60.70 | 47.08 | a | 39.43 | b | 34.23 | a | 50.21 | ||||||||
1971 | 34.02 | 31.43 | 39.29 | c | 44.00 | i | 53.71 | 68.55 | 70.31 | 72.27 | 57.90 | a | 50.32 | 39.59 | a | 31.83 | a | 49.93 | a | |||||||
1972 | 30.52 | e | 37.38 | c | 45.79 | c | 48.05 | a | 55.21 | c | 67.60 | 68.95 | 69.47 | 61.04 | b | 50.07 | a | 32.28 | 26.58 | 49.41 | ||||||
1973 | 27.39 | 33.14 | 37.85 | 39.79 | a | 52.50 | 66.98 | b | 68.33 | b | 72.19 | 58.35 | 53.09 | b | 38.54 | c | 34.00 | c | 48.51 | |||||||
1974 | 26.93 | a | 33.20 | c | 43.19 | b | 46.67 | 59.95 | b | 66.80 | b | 73.13 | 67.45 | b | 57.70 | 52.32 | 39.37 | 31.40 | b | 49.84 | ||||||
1975 | 29.82 | f | 28.17 | e | 35.68 | a | 42.16 | a | 52.88 | b | 63.28 | a | 72.14 | b | 70.10 | 58.14 | a | 53.90 | b | 36.45 | b | 36.39 | c | 49.93 | a | |
1976 | 30.57 | c | 40.48 | c | 36.50 | b | 47.03 | a | 54.05 | c | 65.21 | a | 72.84 | b | 69.35 | 59.27 | 47.48 | 39.28 | 36.48 | d | 49.88 | |||||
1977 | 27.34 | c | 38.05 | 38.37 | 50.12 | b | 59.05 | 70.62 | 72.74 | 69.22 | b | 66.38 | 53.73 | 41.12 | 36.31 | b | 51.92 | |||||||||
1978 | 25.53 | b | 30.48 | a | 41.66 | c | 49.96 | b | 54.05 | 65.50 | 73.73 | 68.79 | 64.75 | 52.71 | e | 38.12 | 27.07 | c | 49.36 | |||||||
1979 | 20.65 | a | 34.50 | c | 39.48 | 48.17 | 53.85 | 64.82 | 73.31 | 68.58 | 66.02 | 53.55 | 33.57 | 35.42 | 49.33 | |||||||||||
1980 | 26.45 | b | 34.98 | 36.91 | c | 45.08 | 53.48 | c | 70.57 | 75.53 | 73.09 | b | 63.83 | a | 52.03 | 41.72 | 40.40 | e | 51.17 | |||||||
1981 | 37.63 | 36.04 | 39.77 | 54.90 | 54.10 | 68.43 | a | 74.38 | b | 69.03 | b | 64.37 | 49.81 | 44.13 | 34.27 | 52.24 | ||||||||||
1982 | 30.00 | b | 31.38 | c | 40.43 | c | 46.19 | d | 52.12 | a | 60.38 | a | 71.12 | a | 70.30 | c | 61.09 | a | 46.33 | b | 34.70 | b | 32.11 | 48.01 | ||
1983 | 35.27 | a | 36.67 | b | 35.88 | b | 41.52 | a | 49.48 | a | 60.30 | 72.08 | a | 72.89 | 63.66 | a | 53.00 | a | 39.89 | h | 21.65 | h | 52.07 | b | ||
1984 | 30.85 | e | 34.30 | d | 36.31 | 41.37 | 57.34 | b | 62.22 | 71.24 | 69.98 | a | 59.16 | a | 43.17 | b | 40.39 | c | 33.93 | c | 48.35 | |||||
1985 | 27.41 | h | 27.02 | 41.07 | b | 49.38 | d | 58.53 | b | 66.27 | 71.03 | 70.07 | a | 58.31 | a | 49.79 | c | 31.04 | c | 30.03 | b | 50.23 | a | |||
1986 | 40.64 | b | 34.34 | c | 46.57 | c | 48.11 | c | 54.52 | c | 67.00 | b | 71.52 | a | 69.58 | a | 58.07 | b | 48.34 | b | 39.80 | g | 31.19 | b | 51.81 | a |
1987 | 31.69 | d | 34.76 | a | 36.62 | b | 48.59 | b | 56.42 | 66.98 | c | 71.71 | b | 67.91 | d | 61.22 | c | 49.23 | c | 39.86 | a | 29.16 | b | 49.51 | ||
1988 | 25.81 | e | 32.98 | b | 38.43 | c | 47.81 | d | 57.87 | a | 70.70 | b | 72.20 | a | 71.03 | b | 61.45 | a | 52.07 | a | 40.07 | 32.79 | b | 50.27 | ||
1989 | 32.70 | f | 21.50 | 41.53 | 49.91 | a | 55.69 | 61.42 | 73.58 | 68.15 | d | 61.06 | c | 50.78 | a | 40.82 | 26.95 | 50.13 | a | |||||||
1990 | 33.40 | e | 31.41 | 36.10 | 45.45 | 53.97 | 69.83 | 68.65 | 69.47 | 66.08 | 50.84 | 43.37 | 25.69 | b | 49.52 | |||||||||||
1991 | 30.33 | g | 39.67 | d | 41.45 | a | 45.52 | 56.61 | 66.90 | 71.35 | 70.35 | 61.33 | 51.02 | a | 35.40 | d | 33.63 | 52.11 | a | |||||||
1992 | 33.52 | e | 39.79 | c | 43.11 | c | 51.76 | g | 59.50 | b | 62.60 | 69.10 | 66.86 | f | 64.32 | e | 53.45 | c | 33.15 | f | 30.17 | e | 50.62 | c | ||
1993 | 27.35 | d | 29.45 | g | 42.24 | f | 46.24 | e | 57.02 | d | 64.41 | c | 69.15 | d | 68.29 | c | 58.65 | f | 48.55 | i | 35.82 | e | 34.54 | d | 50.35 | d |
1994 | 33.92 | g | 32.00 | d | 43.22 | d | 46.60 | d | 61.25 | a | 71.38 | b | 71.03 | k | 71.70 | c | 65.61 | b | 50.35 | a | 37.20 | c | 37.43 | a | 51.67 | b |
1995 | 31.50 | f | 39.46 | 40.76 | f | 42.87 | 49.03 | b | 62.50 | 70.63 | 73.48 | b | 60.62 | 49.72 | b | 43.00 | e | 35.41 | c | 52.67 | b | |||||
1996 | 28.31 | b | 34.44 | b | 36.18 | a | 48.83 | 58.39 | c | 67.19 | a | 71.76 | b | 69.56 | 58.76 | c | 50.82 | a | 38.31 | c | 34.44 | d | 49.75 | |||
1997 | 30.84 | f | 32.26 | a | 41.50 | i | 40.00 | b | 56.05 | b | 66.32 | 72.34 | b | 67.58 | 63.95 | a | 48.60 | e | 36.52 | e | 29.89 | d | 51.35 | b | ||
1998 | 34.32 | c | 33.35 | a | 37.35 | a | 43.77 | d | 57.31 | e | 62.61 | h | 70.76 | d | 69.56 | f | 65.98 | a | 48.84 | b | 41.33 | a | 31.68 | c | 46.47 | b |
1999 | 34.25 | c | 39.32 | c | 41.81 | b | 42.61 | c | 52.81 | b | 63.05 | a | 72.73 | c | 69.20 | a | 56.08 | e | 50.55 | b | 46.31 | d | 34.31 | b | 50.25 | |
2000 | 33.67 | a | 36.70 | f | 39.55 | c | 47.78 | g | 59.42 | a | 66.35 | d | 74.09 | b | 72.92 | g | 60.12 | d | 49.52 | g | 28.90 | f | 27.30 | f | 55.53 | f |
2001 | 30.21 | g | 28.04 | c | 37.83 | h | 46.56 | c | 54.45 | i | 67.22 | g | 74.54 | c | 70.98 | b | 64.28 | e | 49.68 | a | 41.37 | d | 31.59 | d | 50.88 | d |
2002 | 29.73 | e | 29.30 | f | 32.02 | d | 46.76 | e | 52.54 | d | 70.35 | d | 75.70 | a | 68.90 | a | 61.59 | a | 43.36 | c | 35.67 | c | 34.04 | d | 50.06 | a |
2003 | 36.17 | g | 26.21 | b | 39.13 | e | 47.43 | b | 55.65 | d | 60.56 | c | 76.95 | b | 72.79 | b | 58.74 | e | 54.92 | f | 34.21 | a | 32.69 | b | 50.44 | b |
2004 | 30.20 | d | 29.37 | b | 46.76 | f | 48.97 | 57.91 | b | 63.57 | 71.18 | a | 67.44 | 62.93 | a | 51.36 | b | 39.37 | 35.13 | 50.68 | a | |||||
2005 | 36.66 | 37.27 | 40.56 | d | 47.87 | 57.34 | 65.71 | a | 76.77 | a | 70.27 | 64.57 | a | 52.65 | 44.59 | a | 33.56 | 52.32 | ||||||||
2006 | 39.94 | 33.45 | 40.10 | 53.50 | 60.58 | 72.02 | 74.87 | 71.35 | 58.83 | 50.61 | 43.57 | a | 35.25 | a | 52.84 | |||||||||||
2007 | 26.81 | 33.08 | d | 45.90 | b | 46.06 | c | 58.62 | b | 67.97 | 75.58 | 73.29 | 64.87 | 54.90 | a | 42.87 | 31.00 | b | 51.74 | |||||||
2008 | 30.60 | b | 36.02 | 40.89 | 47.25 | b | 55.90 | 66.95 | a | 75.63 | 70.20 | a | 60.82 | 51.48 | 44.74 | a | 29.18 | a | 50.81 | |||||||
2009 | 38.00 | a | 39.71 | 44.18 | 45.93 | a | 58.56 | 63.58 | 70.18 | 70.00 | a | 62.90 | a | 43.21 | 44.25 | 26.69 | 50.60 | |||||||||
2010 | 33.05 | 30.13 | a | 40.72 | a | 49.21 | a | 54.35 | 68.48 | a | 73.73 | c | 73.53 | 66.40 | a | 55.15 | a | 39.93 | 37.88 | b | 51.88 | |||||
2011 | 32.56 | 15.62 | x | ----- | z | 45.55 | t | 49.80 | a | 67.26 | c | 73.78 | a | 74.97 | a | 62.52 | 51.41 | b | 40.05 | 29.50 | 53.54 | c | ||||
2012 | 36.61 | 29.66 | 47.87 | 53.65 | 58.87 | 71.91 | a | 75.19 | 72.21 | 63.77 | 48.53 | 43.50 | a | 32.95 | 52.89 | |||||||||||
2013 | 31.47 | 31.25 | 37.61 | 41.68 | 56.31 | 68.80 | 71.11 | 71.63 | 64.10 | 45.92 | a | 41.38 | 30.19 | 49.29 | ||||||||||||
2014 | 33.69 | 28.86 | 40.70 | a | 48.92 | 55.13 | 65.10 | a | 71.37 | 68.66 | 62.70 | 54.37 | 36.40 | e | 33.35 | a | 49.94 | |||||||||
2015 | 35.03 | 34.86 | 44.02 | 47.75 | 51.19 | 68.32 | 70.58 | a | 71.55 | 65.66 | a | 50.40 | 38.93 | 31.81 | 50.84 | |||||||||||
2016 | 32.92 | 38.45 | 41.45 | a | 47.57 | 53.06 | 70.50 | 74.02 | 69.45 | 63.00 | 56.68 | 46.82 | b | 28.77 | 51.89 | |||||||||||
2017 | 30.81 | 41.50 | a | 47.40 | a | 49.12 | 54.02 | 68.10 | 73.47 | 68.58 | 61.77 | d | 50.69 | b | 44.32 | 32.96 | d | 51.89 | ||||||||
2018 | 35.58 | e | 30.27 | 42.77 | 47.03 | a | 59.13 | a | 71.15 | 73.24 | 70.33 | b | 65.73 | 49.18 | a | 38.62 | 34.16 | 51.43 | ||||||||
2019 | 32.03 | a | 29.22 | a | 36.40 | 49.07 | 50.00 | 64.78 | 73.90 | 73.40 | 67.50 | 44.35 | 37.78 | 34.85 | 49.44 | |||||||||||
2020 | 36.10 | 30.83 | 42.65 | a | 46.22 | a | 58.35 | 69.62 | 74.42 | 74.80 | a | 63.85 | 49.56 | 44.73 | b | 35.34 | b | 52.21 | ||||||||
2021 | 33.81 | 27.85 | a | 40.48 | b | 44.02 | a | 54.90 | 69.95 | b | 74.90 | 72.98 | 67.20 | 52.65 | a | 45.33 | 39.35 | 51.95 | ||||||||
2022 | 31.93 | a | 28.30 | 40.10 | a | 48.27 | 57.38 | f | 68.80 | 75.31 | b | 73.31 | b | 66.78 | 52.82 | a | 36.33 | a | 32.65 | 50.42 | a | |||||
2023 | 29.71 | 32.29 | 35.60 | 46.19 | a | 58.21 | 63.48 | 73.00 | a | 72.06 | 65.67 | 51.69 | 43.22 | 37.65 | 50.73 | |||||||||||
2024 | 29.53 | 37.43 | 40.65 | 47.83 | o | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 35.87 | i | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 31.87 | 33.42 | 39.77 | 46.96 | 55.88 | 66.36 | 72.66 | 70.51 | 62.38 | 50.79 | 40.10 | 32.83 | 50.51 | |||||||||||||
S.D. | 4.14 | 4.28 | 4.02 | 3.19 | 3.11 | 3.23 | 2.10 | 2.07 | 3.03 | 3.48 | 3.64 | 3.25 | 1.27 | |||||||||||||
SKEW | -0.38 | -0.16 | -0.43 | -0.09 | -0.28 | -0.21 | -0.10 | 0.36 | -0.42 | -0.67 | -0.29 | -0.11 | 0.14 | |||||||||||||
MAX | 40.64 | 41.50 | 47.87 | 54.90 | 61.25 | 72.02 | 76.95 | 74.97 | 67.50 | 58.34 | 46.82 | 40.40 | 52.89 | |||||||||||||
MIN | 20.65 | 21.50 | 27.39 | 39.79 | 49.03 | 60.23 | 68.33 | 67.44 | 54.00 | 40.50 | 31.04 | 25.69 | 48.01 | |||||||||||||
YRS | 53 | 58 | 56 | 57 | 59 | 59 | 60 | 59 | 61 | 59 | 58 | 59 | 41 |