YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1959 | ----- | z | 39.82 | k | 41.87 | 48.67 | 50.61 | 64.23 | 66.87 | 65.81 | 59.53 | 51.87 | 44.43 | 38.32 | 53.22 | b | ||||||||||
1960 | 32.71 | 33.66 | 42.84 | 46.03 | 51.39 | 63.90 | 66.84 | 65.23 | 61.40 | 49.97 | 42.83 | 34.19 | 49.25 | |||||||||||||
1961 | 38.58 | 36.86 | 39.90 | 47.20 | 50.65 | 62.83 | 65.29 | 63.48 | 57.87 | 49.45 | 38.43 | 36.26 | 48.90 | |||||||||||||
1962 | 34.45 | 38.29 | 35.84 | 47.43 | 48.90 | 57.53 | 65.29 | 66.55 | 62.97 | 52.16 | 44.40 | 38.71 | 49.38 | |||||||||||||
1963 | 32.84 | 40.75 | 39.71 | 45.37 | 54.35 | 57.97 | 67.90 | 64.71 | 62.20 | 54.55 | 42.47 | 36.26 | 49.92 | |||||||||||||
1964 | 31.13 | 30.83 | 37.06 | 43.10 | 49.87 | 57.86 | a | 64.74 | 62.87 | 57.57 | 51.55 | 36.30 | 35.10 | 46.50 | ||||||||||||
1965 | 35.48 | 32.35 | b | 34.79 | b | 42.39 | b | 44.31 | b | 51.60 | 63.67 | a | 61.87 | 55.73 | 50.03 | a | 42.39 | b | 34.22 | d | 45.74 | |||||
1966 | 30.45 | 33.43 | 43.06 | 46.03 | 53.90 | a | 60.93 | 66.94 | 64.39 | 61.70 | 48.90 | 43.50 | 36.00 | 49.10 | ||||||||||||
1967 | 32.90 | 36.36 | 42.13 | 40.70 | 51.69 | b | 59.63 | 67.13 | 66.03 | 61.17 | 52.65 | 45.50 | 34.58 | 49.21 | ||||||||||||
1968 | 37.16 | 42.90 | 41.06 | 44.67 | 51.10 | 62.83 | 66.23 | 62.58 | 60.90 | 51.71 | 41.60 | 33.61 | 49.70 | |||||||||||||
1969 | 40.39 | 36.79 | 36.65 | 46.13 | 52.61 | 58.10 | 67.58 | 67.71 | 62.43 | 49.29 | 43.37 | 37.55 | 49.88 | |||||||||||||
1970 | 34.29 | 40.21 | 38.74 | 41.23 | 52.19 | 60.80 | 67.26 | 66.97 | 60.40 | 47.00 | 42.40 | 38.06 | 49.13 | |||||||||||||
1971 | 35.45 | 35.96 | 40.52 | 43.17 | a | 47.45 | 60.43 | 67.03 | 64.84 | 61.33 | 48.06 | 39.83 | 34.23 | 48.19 | ||||||||||||
1972 | 33.74 | 38.17 | 45.03 | 45.00 | 49.68 | 61.83 | 68.84 | 65.43 | a | 60.93 | 52.61 | 37.00 | a | 34.84 | 49.43 | |||||||||||
1973 | 33.87 | 38.89 | 36.45 | 43.27 | 53.45 | 64.10 | 66.39 | 65.35 | 59.80 | 52.24 | b | 40.60 | 37.13 | 49.30 | ||||||||||||
1974 | 35.17 | a | 32.54 | 43.65 | 50.27 | 53.68 | 65.63 | 66.19 | 65.29 | 60.60 | 53.29 | 40.97 | 32.06 | 49.94 | ||||||||||||
1975 | 34.77 | a | 34.89 | 40.16 | 41.27 | 49.65 | 61.69 | a | ----- | z | 64.52 | d | 59.92 | d | 49.89 | c | 39.88 | d | 34.76 | b | 46.49 | a | ||||
1976 | 35.90 | 39.41 | b | 40.90 | b | 44.26 | g | 50.67 | a | 58.71 | b | 65.50 | a | 63.59 | d | 58.29 | b | 48.84 | 41.93 | a | 35.50 | i | 50.37 | b | ||
1977 | 36.27 | e | 38.32 | c | 35.96 | e | 45.29 | m | 48.44 | f | 60.93 | a | 66.20 | a | 64.00 | a | 62.20 | e | ----- | z | ----- | z | 39.69 | b | 50.45 | d |
1978 | 37.32 | c | 37.67 | a | 43.00 | b | 44.04 | c | 50.11 | c | 63.17 | 66.28 | b | 64.86 | b | 59.00 | a | 54.78 | d | 40.93 | 32.92 | e | 49.51 | |||
1979 | 31.77 | i | ----- | z | 35.13 | 42.92 | e | ----- | z | 63.28 | e | 65.58 | e | ----- | z | 59.60 | 51.55 | ----- | z | ----- | z | 53.01 | f | |||
1980 | ----- | z | 39.54 | c | 38.88 | e | 45.13 | g | 48.41 | i | 61.48 | e | 69.07 | a | 66.33 | g | 61.50 | 51.03 | 39.50 | h | 39.95 | j | 53.58 | f | ||
1981 | 39.13 | 40.12 | d | 38.75 | c | 47.04 | c | 49.47 | a | 64.43 | 67.16 | 66.65 | e | 60.89 | c | 49.48 | 44.60 | 38.65 | 50.53 | |||||||
1982 | 35.71 | c | 39.57 | e | 39.52 | b | 45.97 | 51.42 | 56.80 | 65.97 | a | 66.26 | 61.53 | 49.94 | 42.37 | 36.94 | 49.33 | |||||||||
1983 | 35.13 | 38.32 | 40.57 | c | 39.90 | 50.84 | 56.57 | 65.87 | a | 63.65 | 64.60 | 51.75 | g | 39.93 | 39.73 | a | 48.65 | a | ||||||||
1984 | 36.35 | 35.97 | 40.74 | 43.11 | b | 57.13 | 60.48 | c | 64.10 | 64.00 | a | 62.30 | 49.68 | 40.37 | 38.50 | c | 49.39 | |||||||||
1985 | 34.71 | 35.14 | 39.23 | r | 47.04 | c | 50.88 | f | 63.12 | e | 65.50 | a | 64.55 | 56.13 | 50.74 | d | 41.10 | 35.06 | 49.31 | b | ||||||
1986 | 39.19 | 40.04 | 44.19 | 47.03 | 52.13 | 62.67 | 65.87 | 67.33 | a | 57.40 | 49.84 | 42.90 | 36.26 | 50.40 | ||||||||||||
1987 | 34.00 | a | 36.18 | 38.42 | 48.57 | 49.97 | 59.87 | 63.94 | 63.71 | 58.59 | a | 55.10 | 39.73 | 34.81 | 48.57 | |||||||||||
1988 | 34.87 | 39.59 | 39.10 | 44.10 | 51.03 | 60.57 | 67.13 | 65.23 | 57.67 | 54.10 | 39.50 | 33.94 | 48.90 | |||||||||||||
1989 | 34.90 | ----- | z | 42.22 | v | 48.93 | 52.45 | 60.27 | 68.36 | c | 65.84 | 59.90 | a | 51.35 | 41.48 | e | 37.63 | d | 52.11 | b | ||||||
1990 | 34.10 | a | 32.74 | a | 42.33 | a | 46.73 | 49.52 | 64.40 | 66.30 | a | 63.52 | b | 60.89 | c | 50.67 | a | 42.20 | 35.48 | d | 49.07 | |||||
1991 | 35.10 | 40.12 | b | 36.97 | b | 41.87 | 48.00 | b | 54.77 | 66.39 | 66.21 | b | 59.89 | b | 53.17 | a | 40.37 | 37.13 | a | 48.33 | ||||||
1992 | 36.10 | b | 39.20 | d | 40.84 | 47.00 | d | 53.04 | f | 59.47 | 65.35 | e | 64.42 | 60.72 | a | 51.69 | b | 36.85 | c | 35.26 | 48.81 | a | ||||
1993 | 39.60 | a | 38.04 | a | 41.50 | c | 45.52 | a | 51.92 | r | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 41.16 | h |
1994 | 34.76 | b | 35.22 | a | 43.03 | b | 46.33 | 51.81 | 65.30 | 69.39 | 68.70 | a | 62.63 | 50.34 | b | 40.53 | 37.10 | a | 50.43 | |||||||
1995 | 36.33 | a | 42.70 | a | 41.90 | 42.90 | 49.32 | 57.45 | a | 66.71 | 68.57 | a | 62.63 | 51.42 | 44.83 | 35.33 | d | 50.01 | ||||||||
1996 | 34.42 | 42.79 | a | 41.52 | 46.73 | 52.39 | 63.63 | 66.06 | 66.16 | 59.69 | a | 49.97 | b | 40.27 | 33.32 | c | 49.75 | |||||||||
1997 | 30.62 | r | ----- | z | 45.28 | f | 43.93 | a | 55.35 | 57.12 | d | 66.50 | c | 67.05 | j | 65.07 | b | 50.10 | b | 44.50 | t | 33.26 | d | 53.05 | e | |
1998 | 36.22 | h | 35.12 | d | 40.45 | b | 40.04 | f | 47.25 | g | 57.29 | b | 68.40 | a | 67.32 | 63.44 | e | 48.21 | g | 42.32 | h | 33.71 | g | 55.34 | f | |
1999 | 34.69 | b | 37.82 | f | 39.96 | d | 41.80 | e | 50.29 | j | 58.86 | i | 66.36 | i | 65.30 | h | 60.08 | f | 51.65 | k | 43.58 | d | 35.38 | g | 40.01 | h |
2000 | 36.87 | h | 37.48 | d | 39.81 | e | 48.00 | b | 55.31 | e | 64.07 | c | 67.38 | e | 65.15 | d | 62.74 | g | 52.11 | d | ----- | z | 36.26 | h | 53.66 | d |
2001 | 32.27 | a | 34.26 | a | 38.89 | l | 44.54 | b | 52.85 | d | 61.12 | e | 65.61 | h | 64.27 | i | 61.89 | b | 51.56 | d | 44.00 | b | 34.52 | b | 46.33 | c |
2002 | 35.36 | c | 37.19 | b | 36.96 | e | 48.04 | g | 50.84 | 66.00 | c | 67.43 | a | 66.96 | e | 61.25 | f | 48.52 | 43.38 | a | 33.52 | b | 48.62 | b | ||
2003 | 39.65 | e | 36.65 | e | 39.57 | c | 43.36 | h | 52.00 | f | 61.56 | e | 71.75 | c | 67.75 | c | 62.87 | 55.90 | 41.72 | a | 35.47 | a | 51.29 | b | ||
2004 | 36.87 | 33.83 | 49.73 | e | 45.60 | e | 53.00 | h | 58.56 | c | 65.73 | e | 63.04 | f | 59.16 | e | 50.86 | i | 38.42 | d | 36.11 | c | 47.11 | c | ||
2005 | 37.67 | g | 40.43 | 41.03 | b | 45.68 | b | 54.29 | 58.40 | 67.03 | a | 63.55 | 61.96 | b | 50.84 | 43.60 | 36.68 | 51.23 | a | |||||||
2006 | 35.27 | a | 38.86 | 39.71 | 45.03 | a | 54.39 | 65.60 | 68.80 | a | 64.74 | 58.67 | 50.27 | a | ----- | z | 33.00 | 50.39 | a | |||||||
2007 | 31.74 | 37.32 | 43.32 | 46.63 | 52.65 | 61.97 | a | 68.29 | 66.65 | 62.00 | 51.16 | 46.50 | 33.39 | 50.13 | ||||||||||||
2008 | 35.35 | ----- | z | 39.63 | a | 44.90 | 49.29 | 62.37 | ----- | z | 65.32 | ----- | z | ----- | z | ----- | z | ----- | z | 49.48 | f | |||||
2009 | 39.16 | ----- | z | 42.35 | 45.45 | a | 55.68 | 59.17 | 69.50 | a | 66.35 | 61.41 | a | 49.13 | ----- | z | ----- | z | 54.25 | c | ||||||
2010 | 37.61 | 36.11 | 38.61 | 42.41 | c | 47.26 | 59.93 | 69.48 | 68.37 | d | 63.62 | a | 51.20 | a | 37.72 | a | 38.13 | a | 49.21 | |||||||
2011 | 35.00 | i | 31.38 | b | 39.94 | 45.03 | 48.21 | b | 61.23 | 67.45 | 68.97 | a | 62.18 | b | 52.20 | a | 39.65 | d | 31.17 | h | 51.62 | b | ||||
2012 | 36.28 | b | 35.74 | b | 36.40 | f | 45.92 | f | 53.15 | d | 63.63 | 67.50 | a | 67.13 | 61.69 | a | 50.77 | a | 43.07 | a | 34.97 | 51.39 | b | |||
2013 | 32.71 | 31.54 | 43.07 | b | 46.42 | f | 50.78 | m | 62.00 | f | 68.92 | f | 65.38 | g | 60.90 | 46.90 | 42.23 | 33.84 | 41.60 | e | ||||||
2014 | 36.87 | 38.50 | 41.19 | 43.33 | 42.97 | 62.66 | a | 66.23 | a | 63.32 | 62.72 | a | 52.70 | a | 41.33 | 37.23 | 49.09 | |||||||||
2015 | 37.30 | a | 42.19 | a | 44.58 | 42.90 | a | 46.33 | a | 63.43 | 66.10 | 67.23 | 62.96 | b | 54.35 | 38.53 | 33.61 | 49.96 | ||||||||
2016 | 34.29 | 40.21 | 41.39 | 43.93 | 48.61 | 64.80 | 69.13 | a | 63.66 | b | 59.77 | 52.47 | a | 43.23 | 37.71 | 49.93 | ||||||||||
2017 | 35.48 | 39.11 | a | 44.29 | 44.87 | 50.45 | 62.00 | 67.52 | 65.87 | 60.03 | 53.48 | 47.73 | 37.77 | 50.72 | ||||||||||||
2018 | 39.03 | 38.32 | 41.42 | 48.97 | a | 51.29 | 63.00 | 68.73 | a | 67.47 | a | 64.21 | a | 52.37 | a | 38.67 | 37.35 | 50.90 | ||||||||
2019 | 35.81 | 34.18 | 40.74 | 45.34 | a | 44.61 | 55.43 | 67.07 | a | 67.16 | 61.66 | a | 46.52 | 45.90 | a | 35.83 | a | 48.35 | ||||||||
2020 | 35.62 | b | 34.93 | 39.81 | 44.31 | a | 52.90 | 58.73 | 68.07 | a | 69.65 | 62.40 | 52.60 | a | 43.48 | a | 34.47 | a | 49.75 | |||||||
2021 | 33.90 | 34.61 | 36.67 | a | 46.62 | a | 50.90 | 63.20 | 65.57 | a | 64.55 | b | 61.60 | 46.52 | 44.43 | 38.45 | 48.92 | |||||||||
2022 | 34.74 | 34.57 | 39.13 | 47.00 | a | 51.32 | 63.93 | 67.84 | 65.81 | 60.93 | 50.26 | 37.47 | 36.65 | 49.14 | ||||||||||||
2023 | 33.35 | 34.43 | 37.94 | 43.17 | 48.87 | 50.59 | m | 68.54 | c | 68.12 | e | 61.34 | a | 53.61 | 44.72 | a | 36.81 | 48.26 | a | |||||||
2024 | 33.97 | 38.93 | 39.39 | 42.91 | g | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 37.43 | i | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 35.42 | 37.11 | 40.38 | 45.04 | 50.91 | 61.06 | 66.96 | 65.65 | 60.92 | 51.11 | 41.73 | 35.86 | 49.31 | |||||||||||||
S.D. | 2.17 | 2.97 | 2.70 | 2.27 | 2.83 | 3.01 | 1.52 | 1.76 | 1.95 | 2.11 | 2.57 | 1.90 | 1.00 | |||||||||||||
SKEW | 0.26 | -0.11 | 0.39 | -0.05 | -0.47 | -0.65 | 0.38 | 0.14 | -0.47 | -0.09 | -0.08 | 0.11 | -1.58 | |||||||||||||
MAX | 40.39 | 42.90 | 49.73 | 50.27 | 57.13 | 66.00 | 71.75 | 69.65 | 65.07 | 55.90 | 47.73 | 39.73 | 50.90 | |||||||||||||
MIN | 30.45 | 30.83 | 34.79 | 39.90 | 42.97 | 51.60 | 63.67 | 61.87 | 55.73 | 46.52 | 36.30 | 32.06 | 45.74 | |||||||||||||
YRS | 58 | 59 | 61 | 57 | 54 | 61 | 59 | 57 | 60 | 58 | 55 | 55 | 38 |