YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1949 | ----- | z | 38.62 | p | 41.26 | 50.00 | 57.11 | 65.52 | 71.18 | 69.56 | 66.38 | 50.44 | 46.15 | 28.89 | 54.65 | b | ||||||||||
1950 | 31.55 | 39.61 | a | 42.29 | 51.58 | 56.13 | 65.85 | 71.11 | 68.98 | 60.70 | 59.13 | 43.27 | 36.82 | 52.25 | ||||||||||||
1951 | 29.71 | 34.59 | 38.98 | 47.13 | 57.02 | 62.62 | 73.47 | 69.73 | 63.62 | 51.29 | 38.42 | 29.05 | 49.63 | |||||||||||||
1952 | 34.13 | 33.10 | 34.42 | 48.80 | 57.68 | 65.88 | 70.26 | 70.52 | 63.62 | 55.03 | 33.15 | 28.92 | 49.63 | |||||||||||||
1953 | 34.79 | 33.00 | 39.82 | 46.67 | 50.90 | 66.28 | 72.48 | 68.74 | 64.58 | 52.92 | 41.15 | 24.34 | 49.64 | |||||||||||||
1954 | 34.21 | 40.05 | 38.65 | 53.60 | 58.26 | 65.13 | 72.39 | 68.16 | 64.48 | 55.08 | 43.13 | 30.50 | 51.97 | |||||||||||||
1955 | 25.39 | 25.98 | 40.19 | 46.12 | 55.55 | 63.88 | 68.98 | 70.18 | 64.93 | 55.53 | 41.02 | 37.45 | 49.60 | |||||||||||||
1956 | 37.39 | 26.69 | 42.84 | 46.13 | 58.23 | 68.98 | 69.10 | 67.76 | 65.87 | 53.44 | 35.15 | 29.98 | 50.13 | |||||||||||||
1957 | 35.29 | 42.98 | 41.03 | 45.98 | 53.44 | 65.58 | 70.13 | 68.19 | 62.63 | 51.05 | 36.13 | 36.45 | 50.74 | |||||||||||||
1958 | 32.39 | 38.73 | 36.82 | 46.33 | 60.10 | 68.78 | 70.73 | 71.71 | 63.60 | 53.10 | 39.68 | 36.65 | 51.55 | |||||||||||||
1959 | 32.73 | 34.46 | 38.87 | 50.12 | 55.61 | 68.58 | 72.34 | 68.39 | 61.60 | 50.94 | 39.87 | 33.50 | 50.58 | |||||||||||||
1960 | 24.15 | 29.14 | 43.55 | 49.33 | 56.18 | 68.82 | 72.79 | 72.11 | 66.10 | 50.39 | 42.02 | a | 31.03 | 50.47 | ||||||||||||
1961 | 32.73 | 36.55 | 41.16 | 48.25 | 57.29 | 69.65 | 72.52 | 69.94 | 61.18 | 51.42 | 38.83 | 28.05 | 50.63 | |||||||||||||
1962 | 26.79 | 36.18 | 36.69 | 52.75 | 55.53 | 65.73 | 72.44 | 71.84 | 64.80 | 53.84 | 44.67 | 35.00 | 51.35 | |||||||||||||
1963 | 25.65 | 36.82 | 41.05 | 48.40 | 59.65 | 65.33 | 73.79 | 68.52 | 67.02 | 56.84 | 43.27 | 32.73 | 51.59 | |||||||||||||
1964 | 27.13 | 25.98 | 35.60 | 44.98 | 58.00 | 65.55 | 73.50 | 69.44 | 63.25 | 55.58 | 39.15 | 32.02 | 49.18 | |||||||||||||
1965 | 34.48 | 31.66 | 38.34 | 47.72 | 54.44 | 61.83 | 70.90 | 68.98 | 59.77 | 53.90 | 44.40 | 35.10 | 50.13 | |||||||||||||
1966 | 29.24 | 29.20 | 43.39 | 50.72 | 61.13 | 66.87 | 74.15 | 71.10 | 63.95 | 53.52 | 45.00 | 31.55 | 51.65 | |||||||||||||
1967 | 28.02 | 37.57 | 44.60 | 47.57 | 55.79 | 64.95 | 72.85 | 68.89 | 63.77 | 53.60 | 44.37 | 25.97 | 50.66 | |||||||||||||
1968 | 27.53 | 40.36 | 42.15 | 46.50 | 56.08 | 66.32 | 70.65 | 66.06 | 62.02 | 53.13 | 39.32 | 26.87 | 49.75 | |||||||||||||
1969 | 35.29 | 35.95 | 35.74 | 49.47 | 58.40 | 65.10 | 73.02 | 73.00 | 64.95 | 49.81 | 40.10 | 36.68 | 51.46 | |||||||||||||
1970 | 31.13 | 39.07 | 38.21 | 42.82 | 57.55 | 65.57 | 72.77 | 71.19 | 61.00 | 47.44 | 41.40 | 31.89 | 50.00 | |||||||||||||
1971 | 30.69 | 33.71 | 41.32 | 46.38 | 53.73 | 66.08 | 72.68 | 68.37 | 60.80 | 48.37 | 39.63 | 30.65 | 49.37 | |||||||||||||
1972 | 33.16 | 37.72 | 46.50 | 48.15 | 56.18 | 64.72 | 72.94 | 69.11 | 62.65 | 52.19 | 36.85 | 29.74 | 50.83 | |||||||||||||
1973 | 24.43 | x | ----- | z | 40.22 | h | ----- | z | ----- | z | ----- | z | 68.56 | d | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 68.56 | k |
1974 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 29.09 | o | ----- | z |
1975 | 30.57 | a | 30.65 | e | 39.71 | q | 42.54 | f | 51.02 | g | 61.81 | q | ----- | z | 67.52 | j | 60.73 | d | 53.65 | g | ----- | z | ----- | z | 40.65 | i |
1976 | ----- | z | ----- | z | ----- | z | 49.27 | f | 56.62 | f | 64.77 | d | 70.09 | d | 67.66 | f | 62.94 | c | ----- | z | 42.23 | j | ----- | z | 65.94 | i |
1977 | 26.44 | 36.20 | 38.74 | b | 48.85 | c | 54.04 | c | 67.04 | b | 70.26 | b | 69.66 | 63.45 | 54.71 | 41.75 | 36.08 | a | 50.60 | |||||||
1978 | ----- | z | 35.65 | d | 43.55 | 48.83 | d | 53.52 | 66.93 | c | 72.22 | d | 65.64 | b | 57.26 | g | 53.56 | 41.92 | d | 30.14 | c | 51.20 | b | |||
1979 | 30.00 | a | 32.21 | g | 39.65 | 49.06 | e | 57.48 | f | 64.29 | b | 69.89 | 66.39 | 65.81 | i | 55.11 | c | 36.05 | h | 34.76 | h | 53.48 | e | |||
1980 | 35.02 | b | 39.73 | e | 39.71 | 47.92 | 52.48 | d | 65.33 | 70.55 | 67.26 | 63.28 | 51.45 | 41.81 | c | 42.80 | d | 51.45 | ||||||||
1981 | ----- | z | ----- | z | 39.58 | g | 53.92 | j | 55.47 | a | 67.25 | b | 69.45 | 68.50 | a | 61.54 | c | 50.50 | b | 42.41 | a | 33.90 | 56.13 | d | ||
1982 | 27.67 | a | 33.89 | a | 40.31 | 46.13 | 52.77 | 61.93 | 67.56 | 68.34 | b | 61.87 | c | 47.71 | c | 39.05 | b | 31.00 | a | 48.19 | ||||||
1983 | 30.31 | b | 34.65 | a | 39.66 | b | 42.43 | 53.67 | a | 61.64 | a | 69.65 | 66.19 | 61.03 | n | 49.69 | 35.63 | 32.29 | 46.89 | a | ||||||
1984 | 29.48 | b | 33.14 | a | 39.98 | b | 46.02 | d | 60.10 | 64.81 | d | 71.62 | a | 68.98 | c | 63.04 | c | 45.24 | d | 40.71 | f | 34.85 | d | 50.66 | a | |
1985 | 31.60 | a | 32.81 | a | 41.28 | a | 50.14 | b | 57.50 | e | 66.60 | a | 71.40 | 69.63 | a | 59.32 | 53.11 | 39.52 | e | 33.77 | e | 50.56 | ||||
1986 | 38.33 | a | 37.67 | a | 43.47 | a | 48.65 | c | 55.86 | b | 66.61 | b | 69.90 | a | 70.98 | c | 60.27 | b | 50.91 | b | 40.88 | 33.43 | b | 51.41 | ||
1987 | 30.77 | a | 35.07 | 37.65 | 49.31 | a | 54.83 | b | 65.03 | a | 67.40 | 67.18 | 60.41 | c | 54.30 | a | 40.36 | e | 29.70 | d | 49.33 | |||||
1988 | 28.97 | a | 37.12 | a | 38.82 | c | 47.13 | 56.84 | c | 65.42 | e | 71.40 | b | 68.90 | b | 58.78 | a | 54.44 | d | 36.88 | f | 31.82 | c | 50.88 | a | |
1989 | 28.76 | b | 36.16 | 44.07 | b | 53.69 | a | 58.40 | 64.85 | 72.48 | 68.13 | a | 64.97 | a | 50.58 | 38.38 | r | 34.40 | p | 54.21 | b | |||||
1990 | 29.53 | 33.09 | 41.74 | b | 50.02 | c | 55.02 | b | 68.53 | a | 70.28 | d | 67.29 | b | 65.96 | c | 52.03 | b | 41.46 | c | 26.12 | c | 50.09 | |||
1991 | 29.71 | c | 39.74 | a | 38.77 | 45.97 | a | 54.50 | b | 63.32 | b | 71.28 | a | 70.57 | b | 63.45 | b | 53.23 | a | 39.48 | b | 33.79 | b | 50.32 | ||
1992 | 27.47 | b | 38.16 | a | 43.22 | b | 51.73 | b | 57.24 | 62.90 | d | 68.07 | d | 68.81 | d | 62.75 | d | 53.74 | b | 35.46 | c | 30.44 | 50.00 | |||
1993 | 36.45 | b | 36.77 | b | 42.45 | b | 48.26 | a | 57.62 | b | 64.43 | b | 69.36 | c | 69.74 | b | 62.54 | b | 51.07 | b | 37.43 | h | 34.47 | b | 52.10 | a |
1994 | 32.56 | 35.69 | d | 43.92 | 49.64 | a | 57.52 | c | 68.57 | b | 73.05 | i | 75.38 | f | 64.29 | b | 50.70 | a | 38.57 | b | 36.26 | b | 47.77 | b | ||
1995 | 34.71 | b | 42.16 | c | 43.59 | c | 45.40 | 52.90 | 63.29 | a | 71.21 | 74.12 | c | 63.96 | b | 52.79 | 45.08 | f | 36.36 | c | 52.77 | a | ||||
1996 | 34.53 | a | 41.88 | 42.16 | 50.40 | 59.94 | 68.43 | b | 73.98 | 71.56 | 60.48 | b | 51.97 | 42.21 | b | 34.29 | 52.65 | |||||||||
1997 | 32.03 | b | 36.13 | a | 44.72 | b | 47.31 | a | 59.07 | b | 65.02 | 71.23 | 71.83 | b | 67.95 | b | 51.89 | 41.17 | 30.23 | c | 51.55 | |||||
1998 | 34.84 | 33.45 | 40.84 | 44.75 | 55.35 | 62.60 | 73.16 | 72.30 | a | 67.13 | 53.08 | 42.95 | 34.88 | a | 51.28 | |||||||||||
1999 | 34.89 | 38.32 | 45.05 | a | 46.02 | 56.48 | b | 65.22 | 71.71 | 69.68 | 64.23 | 53.45 | 46.38 | 29.53 | 51.75 | |||||||||||
2000 | 35.71 | 41.09 | a | 42.52 | a | 52.22 | a | 61.57 | a | 69.45 | 74.77 | a | 71.98 | a | 67.16 | a | 53.19 | 35.73 | 34.79 | 53.35 | ||||||
2001 | 30.89 | 35.34 | 43.06 | 50.18 | 59.77 | 67.93 | a | 73.08 | 71.08 | a | 66.08 | 55.35 | 43.52 | b | 31.78 | a | 52.34 | |||||||||
2002 | 32.38 | a | 35.62 | 41.21 | 53.38 | a | 57.68 | 69.12 | a | 74.47 | 69.88 | c | 62.97 | a | 51.58 | a | 41.71 | a | 32.05 | 51.84 | ||||||
2003 | 38.97 | 36.79 | 41.19 | 47.39 | b | 60.00 | a | 66.97 | 75.60 | 71.61 | 64.65 | 56.13 | 39.52 | 33.73 | 52.71 | |||||||||||
2004 | 34.13 | a | 33.52 | 48.84 | 49.70 | 58.61 | 67.40 | a | 70.79 | 69.95 | b | 62.78 | c | 51.16 | 40.71 | a | 31.48 | a | 51.59 | |||||||
2005 | 37.85 | 38.61 | a | 39.82 | 48.60 | d | 58.18 | 63.95 | 73.06 | 68.74 | b | 64.85 | 53.77 | 41.14 | b | 31.27 | 51.65 | |||||||||
2006 | 33.14 | c | 34.91 | 37.48 | d | 50.22 | 59.38 | a | 68.40 | 71.56 | 67.37 | 57.25 | 48.73 | 39.48 | 29.61 | c | 49.79 | |||||||||
2007 | 27.82 | 31.94 | a | 40.94 | 46.65 | 56.16 | b | 64.23 | 71.24 | 68.85 | 61.90 | 50.83 | d | 43.00 | a | 32.15 | a | 49.64 | ||||||||
2008 | 29.43 | a | 35.48 | a | 41.65 | a | 46.63 | 53.94 | 65.45 | 69.58 | 68.56 | 60.83 | 49.11 | 43.18 | 34.59 | b | 49.87 | |||||||||
2009 | 33.94 | 37.45 | 42.52 | e | 44.47 | a | 58.53 | a | 62.02 | 72.35 | 68.75 | a | 61.14 | b | 45.02 | 39.81 | a | 24.31 | 49.19 | |||||||
2010 | 27.46 | c | 30.52 | 37.66 | c | 45.10 | 51.80 | a | 63.18 | 69.55 | 66.15 | a | 62.37 | c | 49.97 | 33.68 | b | 32.23 | a | 47.47 | ||||||
2011 | 24.14 | c | 28.44 | b | 38.59 | b | 46.26 | c | 49.71 | 61.62 | 66.42 | 66.12 | b | 57.23 | 44.09 | d | 31.73 | b | 22.68 | 44.75 | ||||||
2012 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 64.78 | c | 53.12 | b | ----- | z | ----- | z | 58.95 | j |
2013 | 27.72 | a | ----- | z | ----- | z | 48.80 | c | 57.24 | 69.12 | 72.87 | 70.06 | 64.50 | a | 48.42 | 41.47 | a | 32.26 | 53.24 | b | ||||||
2014 | ----- | z | 38.23 | 42.39 | c | 46.48 | 54.71 | 66.26 | a | 73.62 | a | 67.47 | a | 66.27 | b | 54.58 | 40.53 | a | 34.90 | a | 53.22 | a | ||||
2015 | 37.69 | g | 40.48 | 46.15 | 48.21 | a | 54.09 | c | 68.68 | 69.90 | a | 71.18 | a | 65.18 | 55.13 | a | 39.00 | 30.84 | b | 53.53 | a | |||||
2016 | 31.46 | c | 37.64 | 42.39 | c | 47.72 | a | 55.85 | a | 70.48 | a | 72.43 | d | 68.26 | b | 63.94 | d | 55.27 | 43.20 | c | 35.73 | a | 52.03 | |||
2017 | 33.14 | b | 40.48 | b | 46.39 | 47.63 | d | 54.88 | a | 69.17 | 72.90 | b | 69.03 | b | 63.91 | a | 53.97 | 46.12 | 34.19 | 52.65 | ||||||
2018 | 36.00 | 36.83 | a | 42.58 | a | 52.29 | d | 58.08 | 68.50 | 73.32 | 69.78 | f | 64.98 | 50.31 | d | 36.89 | b | 31.75 | c | 50.14 | a | |||||
2019 | 30.60 | a | 33.15 | a | 43.16 | b | 49.03 | 52.13 | a | 65.22 | a | 73.46 | c | 71.23 | a | 64.61 | b | 48.82 | a | ----- | z | ----- | z | 53.14 | b | |
2020 | 32.58 | a | 36.28 | 43.62 | b | 48.52 | 59.09 | b | 67.63 | c | 72.13 | 73.47 | a | 63.39 | b | 53.77 | 44.32 | b | 30.96 | c | 52.15 | |||||
2021 | 32.07 | a | 33.56 | a | 40.34 | 49.48 | a | 57.45 | b | 70.55 | 73.42 | 70.57 | a | 65.18 | 51.23 | a | 43.73 | d | 36.91 | b | 52.04 | |||||
2022 | 33.02 | a | 32.64 | 41.27 | 49.13 | 58.00 | a | 68.63 | 73.71 | 69.85 | a | 65.88 | b | 50.95 | a | 36.18 | b | 33.45 | a | 51.06 | ||||||
2023 | 30.30 | a | 33.75 | b | 38.39 | 46.87 | 56.44 | 62.23 | 75.48 | 71.74 | 64.20 | b | 53.85 | a | 42.55 | b | 35.78 | a | 50.97 | |||||||
2024 | 31.91 | d | 37.71 | a | 39.33 | e | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 36.32 | i |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 31.54 | 35.55 | 41.13 | 48.23 | 56.44 | 65.98 | 71.63 | 69.47 | 63.32 | 52.14 | 40.55 | 32.29 | 50.69 | |||||||||||||
S.D. | 3.45 | 3.76 | 2.77 | 2.39 | 2.49 | 2.31 | 1.92 | 1.88 | 2.28 | 2.76 | 3.21 | 3.52 | 1.45 | |||||||||||||
SKEW | -0.07 | -0.52 | 0.06 | 0.19 | -0.34 | -0.03 | -0.38 | 0.13 | -0.48 | -0.56 | -0.56 | -0.25 | -1.30 | |||||||||||||
MAX | 38.97 | 42.98 | 48.84 | 53.69 | 61.57 | 70.55 | 75.60 | 74.12 | 67.95 | 59.13 | 46.38 | 42.80 | 53.35 | |||||||||||||
MIN | 24.14 | 25.98 | 34.42 | 42.43 | 49.71 | 61.62 | 66.42 | 65.64 | 57.23 | 44.09 | 31.73 | 22.68 | 44.75 | |||||||||||||
YRS | 67 | 68 | 69 | 69 | 69 | 71 | 71 | 68 | 70 | 71 | 63 | 67 | 54 |