YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1951 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 67.88 | q | 70.42 | 66.53 | a | 66.12 | a | 53.98 | 47.10 | a | 38.87 | 57.17 | f | |||
1952 | 35.67 | a | 42.64 | 38.65 | 51.00 | 57.61 | 59.07 | 72.05 | 70.13 | 65.68 | 57.83 | g | 44.90 | 41.63 | d | 52.64 | a | |||||||||
1953 | 47.30 | f | 41.45 | 44.61 | 49.08 | 50.41 | b | 58.90 | a | 72.45 | 65.81 | d | 66.45 | 54.48 | b | 50.40 | 42.19 | 54.20 | a | |||||||
1954 | 41.26 | 47.70 | 43.98 | a | 53.36 | a | 59.16 | 56.16 | k | 68.06 | o | 62.60 | 60.10 | a | 54.92 | 50.57 | a | 40.03 | m | 52.63 | c | |||||
1955 | 37.77 | c | 39.42 | c | 43.20 | a | 45.56 | f | 49.75 | w | ----- | z | 69.95 | t | 72.44 | 65.03 | a | 57.74 | 45.73 | 46.60 | f | 51.62 | e | |||
1956 | 44.24 | f | 38.69 | 45.65 | a | 49.57 | b | 56.58 | 63.76 | a | 69.48 | a | 65.52 | 65.12 | 52.61 | 48.76 | c | 43.40 | a | 54.47 | a | |||||
1957 | 36.45 | 47.23 | 45.68 | 49.77 | b | 54.00 | 65.47 | a | 70.11 | 66.94 | d | 63.72 | a | 52.56 | 45.23 | 44.42 | 53.47 | |||||||||
1958 | 42.40 | 46.50 | a | 41.69 | 48.96 | d | 58.85 | 63.09 | g | 68.33 | b | 72.20 | d | 65.69 | f | 59.04 | h | 47.93 | 47.02 | e | 52.66 | c | ||||
1959 | 42.75 | a | 41.11 | 47.62 | a | 54.52 | a | 53.66 | 65.83 | 74.31 | d | 68.97 | 61.48 | 56.65 | 49.68 | 44.19 | 55.06 | |||||||||
1960 | 39.56 | 42.16 | 49.48 | 50.40 | 55.06 | 69.13 | 73.82 | 69.72 | b | 66.89 | b | 54.41 | b | 47.02 | 42.58 | 55.02 | ||||||||||
1961 | 44.39 | 44.05 | 44.38 | a | 51.17 | 53.66 | 67.81 | a | ----- | z | 71.53 | 61.78 | 54.97 | b | 44.24 | e | 41.10 | 52.64 | a | |||||||
1962 | 41.76 | 42.43 | 42.35 | 54.13 | 52.95 | b | 63.02 | 68.07 | i | 69.80 | a | 65.40 | 56.71 | 48.27 | 45.85 | 52.97 | a | |||||||||
1963 | 39.57 | a | 50.72 | a | 44.32 | 46.21 | a | 57.85 | 61.83 | 68.05 | 68.29 | 68.00 | c | 57.50 | b | 46.75 | b | 43.28 | d | 54.36 | ||||||
1964 | 39.18 | 41.08 | c | 41.79 | 48.30 | b | 53.66 | 60.94 | e | 70.87 | a | 70.55 | b | 62.65 | 60.13 | a | 44.23 | 41.40 | 52.90 | |||||||
1965 | 43.13 | 43.07 | 45.03 | 49.52 | a | 54.56 | 60.93 | 70.02 | 70.97 | 61.12 | 60.09 | b | 48.88 | 49.14 | t | 55.21 | a | |||||||||
1966 | ----- | z | 44.83 | s | 48.03 | a | 54.58 | 60.15 | a | 64.03 | 68.40 | a | 71.98 | 65.20 | 57.13 | 49.37 | 42.89 | 58.18 | b | |||||||
1967 | 42.56 | e | 45.05 | g | 45.74 | 40.97 | a | ----- | z | 60.80 | 73.58 | 74.47 | a | 67.74 | a | 58.34 | 52.36 | a | 37.06 | 55.36 | b | |||||
1968 | 41.77 | a | 48.47 | 46.81 | 49.70 | 55.32 | a | 65.20 | 71.66 | 66.23 | a | ----- | z | 54.55 | b | 46.38 | 39.58 | 53.24 | a | |||||||
1969 | 43.52 | 41.14 | 45.27 | 49.87 | 59.63 | 63.03 | 72.60 | 72.69 | b | 66.70 | c | 52.08 | a | 49.77 | 42.10 | 54.87 | ||||||||||
1970 | 44.47 | 47.55 | 45.81 | 45.92 | 57.95 | 65.58 | 74.29 | c | 72.15 | a | 63.17 | 54.52 | 48.70 | 40.27 | 55.03 | |||||||||||
1971 | 41.90 | 41.91 | 45.69 | 46.88 | 52.90 | 61.64 | e | 70.69 | 71.85 | a | 64.32 | 51.87 | 43.73 | 37.26 | 52.55 | |||||||||||
1972 | 39.87 | 45.02 | a | 50.81 | 49.53 | 58.16 | 65.98 | 73.56 | 66.39 | 59.30 | 51.44 | d | 43.92 | 37.69 | 53.47 | |||||||||||
1973 | 39.21 | 45.80 | 40.50 | b | 49.90 | 60.05 | 65.58 | 69.52 | 68.97 | 61.57 | a | 55.00 | 44.72 | a | 44.63 | a | 53.79 | |||||||||
1974 | 41.48 | 42.32 | 46.84 | 48.77 | 56.55 | a | 66.05 | 70.15 | 69.39 | 67.97 | 57.05 | 47.87 | 39.15 | a | 54.46 | |||||||||||
1975 | 41.85 | 42.59 | 44.08 | 43.90 | 57.42 | 64.15 | 69.27 | 67.55 | 67.91 | a | 54.53 | 45.57 | 43.92 | 53.56 | ||||||||||||
1976 | 42.81 | 44.40 | 44.13 | 47.17 | 59.52 | a | 63.55 | a | 71.47 | 64.69 | 64.47 | 57.08 | 50.82 | 44.05 | a | 54.51 | ||||||||||
1977 | 42.20 | a | 46.50 | 42.00 | 53.13 | 51.05 | 68.68 | 70.84 | 71.94 | 64.74 | a | 58.44 | 47.88 | 46.53 | 55.33 | |||||||||||
1978 | 46.23 | 45.89 | 52.17 | a | 48.98 | 56.68 | a | 64.37 | 70.26 | 69.55 | a | 63.10 | 60.45 | 43.60 | a | 38.71 | 55.00 | |||||||||
1979 | 39.95 | 41.80 | a | 46.57 | a | 49.53 | 59.33 | a | 64.50 | 69.25 | a | 66.69 | 67.40 | 56.69 | 46.30 | 46.05 | 54.51 | |||||||||
1980 | 45.47 | 48.24 | 44.08 | 51.23 | b | 53.16 | 60.00 | 71.19 | 68.13 | 64.90 | 58.48 | 48.83 | 47.94 | 55.14 | ||||||||||||
1981 | 47.18 | 47.48 | 45.92 | 52.77 | 57.52 | a | 66.68 | 68.58 | 70.77 | 66.22 | 52.19 | 48.38 | 44.52 | 55.68 | ||||||||||||
1982 | 39.09 | b | 45.24 | a | 44.93 | c | 49.33 | a | 58.31 | g | 62.02 | e | 72.76 | l | 70.28 | a | 64.31 | c | 55.98 | d | 44.93 | 42.24 | b | 51.84 | b | |
1983 | 45.25 | c | 46.92 | d | 46.68 | c | 47.54 | d | 57.40 | e | 63.57 | c | 66.03 | b | 68.94 | g | 68.25 | l | 56.22 | h | 45.77 | h | 43.67 | d | 52.13 | d |
1984 | 46.00 | 44.61 | g | 48.58 | g | 48.37 | g | 61.48 | d | 64.09 | c | 74.05 | j | 72.25 | g | 68.22 | g | 51.47 | l | 45.79 | d | 40.93 | c | 51.66 | g | |
1985 | 42.42 | 43.69 | a | 44.11 | d | 54.68 | 56.59 | b | 69.00 | d | 73.13 | a | 67.62 | a | 60.58 | f | 54.29 | c | 43.73 | b | 45.62 | a | 54.08 | a | ||
1986 | 49.82 | c | 46.98 | b | 50.60 | 49.88 | f | 57.83 | e | 66.48 | b | 68.50 | b | 71.90 | a | 57.61 | g | 54.24 | d | 48.34 | b | 44.07 | c | 55.88 | b | |
1987 | 39.73 | c | 43.54 | c | 45.79 | e | 56.19 | d | 59.87 | e | 67.23 | d | 66.15 | d | 69.54 | e | 64.97 | 60.78 | d | 46.78 | c | 38.93 | a | 54.96 | ||
1988 | 43.86 | c | 45.96 | a | 46.93 | a | 51.29 | f | 55.39 | h | 63.30 | e | 73.72 | d | 71.55 | a | 66.61 | c | 61.03 | a | 46.22 | c | 41.81 | b | 56.10 | b |
1989 | 40.96 | d | 41.26 | c | 48.67 | d | 56.96 | c | 56.25 | c | 64.35 | c | 70.52 | d | 67.43 | d | 64.44 | e | 54.80 | f | 48.95 | b | 44.12 | a | 54.90 | a |
1990 | 41.80 | c | 42.23 | f | 48.37 | d | 53.92 | d | 55.42 | e | 64.38 | e | 72.15 | a | 68.73 | c | 63.98 | a | 58.29 | c | 48.00 | c | 38.20 | c | 55.75 | a |
1991 | 41.87 | a | 49.52 | b | 42.11 | d | 48.17 | d | 53.76 | h | 61.33 | c | 71.83 | b | 68.90 | e | 69.00 | d | 60.63 | a | 50.59 | b | ----- | z | 56.40 | b |
1992 | ----- | z | 47.39 | o | 48.26 | d | 54.29 | b | 63.14 | c | 65.17 | g | 69.15 | e | 72.07 | d | 65.85 | f | 58.28 | b | ----- | z | 39.89 | c | 57.87 | e |
1993 | 42.27 | c | 44.10 | c | ----- | z | 49.86 | e | ----- | z | ----- | z | 67.39 | d | ----- | z | 63.94 | c | 56.85 | g | 47.04 | d | 42.67 | a | 51.04 | e |
1994 | 43.98 | c | 42.98 | c | 48.96 | e | 51.68 | k | 56.70 | f | 65.02 | c | 71.45 | c | 70.66 | 64.10 | 53.47 | 41.19 | a | 42.74 | 54.45 | b | ||||
1995 | 45.08 | 49.44 | c | 47.29 | ----- | z | 54.06 | 61.81 | a | 69.26 | f | 69.73 | c | 65.23 | 57.93 | a | 52.00 | c | 44.29 | g | 55.84 | c | ||||
1996 | 44.46 | c | 46.54 | c | 48.12 | e | 52.56 | f | 57.26 | f | 65.17 | d | 72.85 | d | 72.54 | f | 63.71 | d | 53.14 | f | 48.89 | c | 44.53 | a | 54.28 | d |
1997 | 44.47 | a | 43.54 | d | 50.33 | d | 49.33 | g | 61.24 | b | 63.87 | g | 68.61 | d | 69.77 | a | 66.96 | e | 54.31 | g | 48.98 | c | 41.43 | b | 55.04 | c |
1998 | 45.50 | b | 41.83 | b | 46.92 | e | 47.21 | d | 50.83 | d | 60.48 | g | 70.52 | e | 72.12 | b | 64.34 | e | 52.19 | g | 45.45 | a | 40.12 | c | 52.48 | b |
1999 | 42.66 | b | 42.41 | e | 43.83 | d | 45.76 | g | 55.33 | g | 61.92 | e | 68.84 | f | 67.65 | e | 66.07 | 58.48 | e | 51.23 | d | 41.91 | c | 52.91 | c | |
2000 | 42.46 | c | 46.48 | h | 46.25 | c | 52.78 | e | 59.54 | f | 67.77 | b | 68.09 | c | 70.23 | e | 60.69 | v | 55.35 | e | 42.48 | d | 45.43 | d | 54.54 | c |
2001 | 40.83 | a | 40.98 | e | 49.66 | c | 48.22 | g | 63.95 | c | 67.12 | d | 70.32 | f | 71.38 | f | 66.52 | f | 59.96 | g | 49.80 | c | 41.85 | d | 50.60 | e |
2002 | 39.58 | s | 46.32 | c | 46.34 | f | 51.58 | f | 55.95 | c | 65.18 | p | 72.53 | b | 67.88 | b | 65.68 | e | 53.86 | c | 50.10 | a | 42.47 | b | 56.85 | d |
2003 | 48.72 | b | 43.42 | b | 46.98 | d | 46.83 | f | 56.86 | f | 65.18 | e | 73.19 | b | 71.52 | d | 69.06 | e | 61.00 | g | 43.93 | c | 42.61 | i | 57.75 | d |
2004 | 41.84 | 42.10 | d | 52.18 | a | 52.00 | e | 56.57 | d | 65.52 | e | 70.98 | d | 69.91 | d | 63.88 | i | 52.98 | e | 43.37 | c | 42.53 | a | 53.64 | a | |
2005 | 45.19 | d | 45.29 | b | 47.65 | d | 49.17 | i | 56.87 | d | 60.60 | f | 73.59 | b | 71.02 | d | 60.67 | d | 54.05 | i | 49.85 | c | 44.89 | d | 55.00 | c |
2006 | 42.98 | c | 44.28 | c | 40.64 | b | 51.33 | g | 59.59 | d | 67.62 | d | 74.77 | a | 67.75 | e | 65.08 | d | 53.70 | c | 47.24 | a | 41.34 | c | 55.00 | a |
2007 | 37.35 | a | 43.25 | 49.36 | c | 50.16 | a | 58.32 | c | 64.23 | 70.87 | a | 70.48 | a | 62.46 | b | 54.06 | 49.45 | a | 38.40 | b | 54.03 | ||||
2008 | 40.56 | 41.50 | b | 45.47 | b | 48.65 | 56.16 | 64.95 | 72.59 | b | 71.69 | 66.25 | 56.95 | a | 50.78 | 40.40 | 54.66 | |||||||||
2009 | 45.02 | 42.02 | 43.76 | b | 49.43 | 61.37 | d | 62.16 | b | 73.11 | 69.13 | 67.40 | a | 51.29 | c | 46.58 | d | 40.18 | a | 54.29 | ||||||
2010 | 44.10 | b | 43.42 | c | 45.52 | c | 46.32 | b | 51.04 | e | 62.35 | g | 71.22 | f | 67.72 | d | 64.04 | b | 58.50 | h | 45.22 | e | 44.76 | f | 50.92 | d |
2011 | 41.90 | f | 39.91 | 44.50 | 48.96 | e | 52.07 | b | 61.42 | e | 69.12 | g | 69.79 | c | 66.98 | b | 56.84 | 45.04 | b | 37.42 | 52.29 | b | ||||
2012 | 43.16 | b | 42.47 | 43.24 | 50.32 | 57.05 | 63.46 | c | 70.53 | a | 73.87 | 68.23 | 56.32 | 50.08 | 41.55 | 55.02 | ||||||||||
2013 | 39.68 | 39.68 | 47.39 | c | 51.73 | 57.27 | a | 66.55 | 74.65 | a | 69.19 | b | 65.52 | 53.55 | a | 47.88 | b | 41.20 | a | 54.52 | ||||||
2014 | 45.22 | a | 45.12 | 48.31 | d | 51.26 | a | 58.27 | c | 65.24 | a | 73.52 | 70.73 | a | 67.58 | 59.29 | 49.12 | b | 42.90 | 56.38 | ||||||
2015 | 45.47 | 49.21 | 51.73 | c | 49.80 | 55.97 | a | 68.83 | 71.32 | 72.00 | d | 68.07 | 59.76 | 43.47 | 39.13 | 56.23 | ||||||||||
2016 | 42.76 | b | 46.36 | 48.22 | a | 52.12 | a | 56.17 | a | 67.74 | a | 70.52 | 69.90 | 62.21 | b | 54.93 | a | 49.15 | 41.66 | b | 55.14 | |||||
2017 | 41.30 | a | 46.35 | b | 48.43 | b | 51.55 | a | 57.74 | f | 70.38 | m | 73.96 | h | 72.56 | g | 63.72 | l | 56.78 | h | 49.56 | d | 43.21 | g | 47.44 | g |
2018 | 46.35 | a | 40.46 | c | 45.60 | k | 51.00 | h | 56.15 | k | 64.87 | o | 75.69 | r | 70.67 | h | 65.10 | f | 56.56 | o | 47.43 | i | 43.81 | m | 43.41 | j |
2019 | 45.93 | q | 38.43 | e | 44.68 | i | 52.81 | f | 52.84 | c | 66.50 | g | 69.13 | h | 70.36 | f | 63.20 | c | 52.70 | d | 49.50 | d | 42.70 | a | 49.90 | f |
2020 | 41.47 | b | 44.35 | c | 45.30 | k | 50.02 | h | 57.29 | n | 65.26 | i | 73.39 | c | ----- | z | ----- | z | ----- | z | 42.60 | o | 42.56 | 50.44 | h | |
2021 | ----- | z | 43.67 | y | 41.56 | n | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 51.58 | y | ----- | z | 40.92 | y | ----- | z |
2022 | ----- | z | 42.86 | u | 45.67 | y | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2023 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 60.00 | q | 48.09 | s | 45.97 | n | ----- | z |
2024 | 42.43 | i | 42.50 | q | 44.94 | o | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 42.55 | 44.07 | 46.10 | 50.23 | 56.67 | 64.44 | 71.09 | 69.61 | 64.99 | 55.96 | 47.40 | 42.09 | 54.59 | |||||||||||||
S.D. | 2.78 | 2.88 | 2.91 | 3.02 | 3.10 | 2.55 | 2.16 | 2.32 | 2.29 | 2.69 | 2.56 | 2.55 | 0.90 | |||||||||||||
SKEW | -0.01 | 0.23 | -0.06 | -0.25 | -0.02 | -0.14 | -0.29 | -0.51 | -0.37 | 0.17 | -0.27 | -0.02 | -0.28 | |||||||||||||
MAX | 49.82 | 50.72 | 52.18 | 56.96 | 63.95 | 69.13 | 74.77 | 74.47 | 69.06 | 61.03 | 52.36 | 47.94 | 56.38 | |||||||||||||
MIN | 35.67 | 38.43 | 38.65 | 40.97 | 50.41 | 58.90 | 66.03 | 62.60 | 59.30 | 51.29 | 41.19 | 37.06 | 52.55 | |||||||||||||
YRS | 62 | 63 | 63 | 52 | 55 | 55 | 56 | 61 | 57 | 54 | 66 | 61 | 27 |