YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1963 | ----- | z | ----- | z | ----- | z | 46.63 | 58.22 | a | 62.24 | a | 65.87 | a | 68.24 | 67.09 | c | 54.62 | a | 44.72 | a | 39.68 | 56.37 | c | |||
1964 | 38.35 | 40.53 | 43.42 | a | 48.50 | a | 53.44 | d | 62.12 | a | 69.32 | 66.87 | 59.47 | 55.92 | 41.03 | 39.60 | b | 51.55 | ||||||||
1965 | 37.95 | 41.29 | ----- | z | 50.71 | b | 54.95 | 62.40 | a | 70.23 | 68.66 | f | ----- | z | ----- | z | ----- | z | 35.12 | b | 50.38 | e | ||||
1966 | 38.07 | a | 39.57 | 45.24 | 51.80 | 58.10 | 62.32 | 66.29 | 68.24 | 63.03 | 53.84 | b | 45.78 | 40.23 | 52.71 | |||||||||||
1967 | 40.10 | 42.38 | 43.39 | 43.90 | a | 57.90 | a | 65.77 | 71.39 | 73.80 | a | 67.72 | 53.76 | 45.16 | a | 35.44 | 53.39 | |||||||||
1968 | 38.05 | 47.09 | 48.18 | 49.35 | 56.63 | a | 65.05 | 70.94 | 67.21 | 64.40 | 53.16 | 45.10 | 38.47 | 53.63 | ||||||||||||
1969 | 36.02 | 39.64 | 45.34 | 49.53 | a | 61.37 | 65.28 | 67.85 | d | 66.66 | 64.57 | 50.74 | 43.77 | 40.40 | 52.60 | |||||||||||
1970 | 42.06 | 44.94 | a | 46.67 | a | 45.13 | 57.82 | 66.68 | 71.19 | 68.98 | 61.07 | 53.81 | 46.77 | 38.29 | 53.62 | |||||||||||
1971 | 36.85 | 41.25 | 43.10 | a | 47.95 | 55.79 | 60.72 | 70.20 | c | 71.02 | 60.17 | 51.21 | 43.57 | 36.22 | a | 51.50 | ||||||||||
1972 | 37.65 | 43.71 | 50.42 | 48.77 | 58.82 | 65.42 | 72.29 | 70.53 | 61.60 | 53.32 | 45.00 | 35.74 | 53.61 | |||||||||||||
1973 | 39.00 | 45.36 | 43.95 | 51.18 | 61.12 | a | 66.03 | 72.19 | 69.03 | 64.22 | 52.40 | 44.12 | 43.73 | 54.36 | ||||||||||||
1974 | 36.61 | 40.41 | 45.68 | 49.82 | 56.34 | 66.80 | 69.21 | 70.87 | 68.35 | 55.19 | 45.98 | 39.33 | a | 53.72 | ||||||||||||
1975 | 38.38 | a | 41.57 | 43.16 | 45.20 | 58.00 | 62.97 | 69.94 | 65.58 | 66.50 | 52.08 | 42.60 | 40.66 | 52.22 | ||||||||||||
1976 | 40.47 | 41.41 | 43.61 | 48.32 | 58.10 | 61.30 | 70.27 | 65.78 | f | 64.28 | 55.47 | 46.22 | 34.44 | 51.26 | a | |||||||||||
1977 | 36.18 | 45.71 | 43.74 | 54.02 | 53.13 | 68.12 | 70.27 | 74.45 | 62.71 | a | 53.42 | 43.85 | 42.77 | 54.03 | ||||||||||||
1978 | 42.65 | 44.23 | 50.85 | 49.43 | 56.26 | 65.05 | 69.81 | 68.81 | 58.92 | 56.76 | 40.77 | 35.31 | 53.24 | |||||||||||||
1979 | 36.18 | 41.88 | 49.45 | a | 50.50 | 58.06 | 63.85 | 69.45 | 67.24 | 65.92 | 57.50 | 42.22 | 40.48 | a | 53.56 | |||||||||||
1980 | 38.77 | a | 45.36 | 43.77 | 51.63 | 55.89 | 59.65 | 69.95 | 66.47 | 64.32 | 56.31 | 45.48 | a | 40.73 | 53.19 | |||||||||||
1981 | 42.69 | 44.02 | 47.52 | 53.37 | 57.50 | 65.02 | c | 69.73 | 72.44 | 65.43 | 52.47 | 45.98 | 42.70 | a | 54.90 | |||||||||||
1982 | 36.32 | 41.46 | 44.31 | 47.98 | 56.97 | 65.62 | 68.79 | c | 69.42 | 60.63 | 54.56 | 42.77 | 39.53 | 52.36 | ||||||||||||
1983 | 41.13 | 43.84 | 47.50 | a | 48.18 | 59.10 | 62.15 | 65.95 | 69.66 | b | 61.35 | 55.42 | a | 44.58 | 39.77 | 53.22 | ||||||||||
1984 | 40.42 | 43.50 | 48.47 | 49.37 | 57.63 | 61.71 | a | 71.12 | a | 68.84 | 62.28 | 51.07 | a | 44.20 | 36.65 | a | 52.94 | |||||||||
1985 | 38.61 | 42.25 | 43.50 | 55.05 | 56.55 | 66.22 | 73.26 | 68.68 | 59.95 | 52.82 | 38.78 | 37.87 | 52.80 | |||||||||||||
1986 | 44.97 | 46.04 | 51.13 | 51.50 | 58.06 | 68.07 | a | 67.08 | 73.11 | 58.57 | 55.18 | 46.05 | 39.88 | a | 54.97 | |||||||||||
1987 | 39.52 | 43.66 | 46.95 | 56.07 | 60.66 | 68.75 | 67.23 | 70.35 | 63.48 | 59.31 | 46.16 | a | 39.47 | 55.13 | ||||||||||||
1988 | 39.48 | a | 46.00 | 46.55 | 52.80 | 55.21 | 62.88 | 69.26 | b | 69.77 | 65.83 | 61.25 | a | 45.79 | a | 38.48 | 54.44 | |||||||||
1989 | 38.74 | 37.57 | a | 46.87 | a | 56.22 | 57.69 | 65.37 | 67.27 | 67.50 | 63.88 | 54.88 | c | 44.07 | a | 38.50 | a | 53.21 | ||||||||
1990 | 40.89 | 41.02 | 48.97 | 56.70 | 55.81 | 63.62 | 72.29 | 70.02 | a | 66.17 | 55.08 | 43.47 | 32.50 | 53.88 | ||||||||||||
1991 | 38.87 | a | 47.71 | 43.84 | 48.73 | 54.56 | ----- | z | 71.96 | f | 70.76 | 67.33 | ----- | z | 48.48 | 37.26 | 50.84 | c | ||||||||
1992 | 40.98 | 47.45 | a | 51.05 | 55.81 | a | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 45.20 | 37.50 | a | 46.33 | f | |||
1993 | 37.98 | 40.96 | a | 50.50 | 50.78 | 59.80 | a | 63.20 | 64.43 | b | 68.77 | 66.13 | 57.95 | a | 40.65 | d | 39.92 | 53.42 | ||||||||
1994 | 41.77 | a | 41.94 | a | 49.65 | 53.21 | i | 60.60 | a | 64.55 | 73.15 | 68.58 | a | 66.30 | 53.42 | a | 39.43 | 39.68 | c | 54.46 | a | |||||
1995 | 43.94 | 48.96 | 46.56 | 51.13 | 58.84 | b | 61.95 | a | 70.87 | 67.74 | 66.73 | 55.63 | 49.65 | 43.55 | b | 55.46 | ||||||||||
1996 | 41.15 | 47.50 | 48.60 | 53.17 | a | 56.27 | 63.60 | 74.98 | b | 71.07 | d | 61.29 | a | 54.45 | b | 45.50 | c | ----- | z | 56.14 | a | |||||
1997 | 40.55 | 44.15 | a | 50.05 | c | 52.55 | 62.44 | 64.14 | a | 70.67 | a | 71.92 | 63.72 | 51.73 | 46.14 | a | 38.03 | 54.67 | ||||||||
1998 | 44.00 | b | 45.38 | x | 47.73 | p | 49.81 | a | 59.06 | v | 64.80 | y | ----- | z | 75.63 | l | 65.50 | u | 53.56 | w | ----- | z | ----- | z | 46.91 | j |
1999 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2000 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 40.65 | 39.40 | a | 40.02 | j | |
2001 | 40.03 | a | 41.04 | a | 48.45 | a | 48.11 | b | 63.64 | c | 63.70 | b | 70.87 | a | 72.04 | f | 66.31 | c | 56.16 | c | 46.32 | 40.71 | c | 53.21 | a | |
2002 | 39.93 | d | 43.37 | a | 44.68 | a | 52.74 | a | 57.23 | a | 66.26 | a | 74.03 | 69.26 | b | 65.03 | a | 52.83 | b | 45.78 | c | 40.21 | c | 54.28 | ||
2003 | 43.84 | b | 41.41 | 46.53 | b | 47.09 | b | 57.32 | a | 67.48 | a | 74.77 | 71.25 | a | 66.71 | b | 56.56 | d | 40.94 | f | 40.86 | b | 55.80 | a | ||
2004 | 41.21 | b | 42.40 | 51.20 | c | 53.29 | a | 57.73 | a | 66.05 | a | 73.50 | e | 71.74 | 61.96 | d | 53.62 | b | 42.85 | 39.96 | c | 54.63 | ||||
2005 | 37.39 | d | 43.52 | 48.81 | b | 49.80 | 58.19 | b | 60.79 | b | 72.84 | f | 72.09 | b | 60.86 | e | 53.88 | b | 43.04 | b | 38.73 | c | 51.55 | a | ||
2006 | 40.93 | d | 42.10 | b | 41.55 | c | 50.24 | c | 60.22 | d | 67.02 | c | 74.43 | a | 69.16 | c | 64.31 | c | 53.05 | a | 45.90 | d | 39.70 | a | 54.05 | |
2007 | 35.85 | d | 41.79 | d | 48.56 | e | ----- | z | 58.84 | b | 64.80 | e | 71.36 | b | 68.02 | a | 59.68 | h | 50.74 | d | 44.25 | f | 36.27 | c | 52.91 | c |
2008 | 34.43 | d | 40.83 | c | 42.95 | a | 46.45 | 57.77 | a | 61.64 | b | 69.70 | c | 69.20 | h | 64.42 | e | 52.48 | d | 44.87 | c | 35.36 | c | 50.08 | a | |
2009 | 37.92 | f | 41.81 | g | 42.98 | e | 49.48 | e | 57.27 | c | 63.61 | c | 72.16 | b | 68.54 | d | 63.26 | e | 50.96 | f | 42.22 | c | 35.48 | e | 55.00 | c |
2010 | 43.75 | c | 44.23 | h | 46.80 | d | 46.67 | d | 54.11 | c | 62.12 | e | 72.19 | j | 68.96 | h | 63.74 | k | 55.86 | i | 42.48 | d | 40.78 | h | 49.32 | f |
2011 | 40.02 | g | 40.52 | g | 44.30 | f | 47.06 | d | 53.17 | e | 63.17 | d | 68.31 | 71.06 | d | 68.25 | 54.88 | e | 44.34 | e | 35.95 | c | 56.24 | c | ||
2012 | 40.20 | c | 42.50 | f | 44.00 | d | 51.66 | h | 59.54 | e | 61.90 | d | 71.98 | b | 74.05 | a | 68.95 | 57.97 | 48.27 | b | 44.35 | e | 57.12 | b | ||
2013 | 39.63 | a | 43.75 | 50.16 | f | 55.19 | f | 61.54 | c | 67.08 | 76.53 | b | 73.56 | 67.88 | f | 55.20 | c | 46.83 | d | 35.44 | d | 55.51 | c | |||
2014 | 43.60 | f | 47.23 | b | 51.96 | e | 55.50 | f | 62.94 | f | 66.76 | e | 79.11 | 76.92 | a | 70.17 | f | 63.70 | d | 52.12 | b | 48.71 | e | 60.82 | d | |
2015 | 46.21 | c | 50.68 | c | 55.94 | f | 55.66 | b | 63.83 | e | 73.92 | d | 77.18 | a | 74.48 | b | 63.12 | i | 59.44 | d | 45.38 | d | 40.85 | d | 58.77 | b |
2016 | 41.62 | e | 45.43 | f | 46.27 | g | 54.78 | g | 60.09 | i | 66.32 | e | 69.48 | h | 72.59 | h | 62.52 | c | 53.33 | e | 49.07 | b | 36.69 | g | 54.57 | g |
2017 | 37.29 | e | 43.19 | g | 47.27 | g | 49.02 | d | 61.33 | k | 67.04 | f | 73.42 | a | 73.91 | c | 64.41 | b | 53.33 | b | 46.45 | a | 38.82 | f | 56.83 | e |
2018 | 43.36 | c | 41.75 | b | 44.26 | h | 51.46 | c | 61.36 | b | 63.89 | h | 74.72 | d | 72.05 | a | 62.81 | c | 56.46 | d | 45.73 | f | 40.05 | c | 56.00 | c |
2019 | 41.23 | e | 36.91 | k | 44.94 | f | 54.00 | f | 57.28 | f | 66.26 | m | 70.33 | p | 70.79 | s | 63.90 | o | 51.27 | t | 46.94 | v | 41.95 | t | 41.23 | k |
2020 | 41.98 | k | 42.61 | g | 44.71 | e | 53.52 | e | 58.78 | b | 65.55 | j | 72.98 | e | 72.94 | f | 65.71 | i | 56.29 | g | 43.85 | j | 40.73 | e | 54.14 | g |
2021 | 42.48 | c | 40.94 | a | 45.02 | h | 52.53 | l | 59.89 | h | 71.48 | g | 76.10 | 71.22 | b | 65.10 | a | 53.22 | a | 46.59 | b | 39.19 | b | 54.36 | d | |
2022 | 41.65 | a | 41.85 | d | 49.78 | d | 47.77 | d | 55.20 | h | 65.37 | g | 74.84 | c | 75.50 | j | 69.76 | k | 61.71 | s | 42.64 | p | 39.13 | d | 49.17 | f |
2023 | 41.62 | n | 40.47 | k | 40.75 | g | 51.66 | k | 61.08 | s | 65.21 | w | 74.05 | u | 75.00 | y | 64.57 | o | 56.29 | s | 47.93 | p | 44.50 | m | ----- | z |
2024 | 43.37 | p | 46.14 | o | 44.39 | q | 50.35 | t | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 39.93 | 43.27 | 46.70 | 50.40 | 57.96 | 64.51 | 71.15 | 70.21 | 64.01 | 54.73 | 44.75 | 39.04 | 53.59 | |||||||||||||
S.D. | 2.61 | 2.71 | 2.86 | 3.09 | 2.48 | 2.60 | 3.09 | 2.50 | 2.64 | 2.63 | 2.55 | 2.84 | 0.99 | |||||||||||||
SKEW | 0.17 | 0.62 | 0.12 | 0.23 | 0.25 | 0.84 | 0.21 | 0.47 | -0.20 | 1.13 | 0.07 | 0.49 | -0.19 | |||||||||||||
MAX | 46.21 | 50.68 | 51.96 | 56.70 | 63.83 | 73.92 | 79.11 | 76.92 | 68.95 | 63.70 | 52.12 | 48.71 | 55.46 | |||||||||||||
MIN | 34.43 | 37.57 | 41.55 | 43.90 | 53.13 | 59.65 | 64.43 | 65.58 | 58.57 | 50.74 | 38.78 | 32.50 | 51.50 | |||||||||||||
YRS | 53 | 48 | 47 | 50 | 50 | 49 | 51 | 47 | 47 | 49 | 51 | 53 | 31 |