YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1950 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 84.35 | 75.67 | 76.55 | 61.97 | 56.61 | 71.03 | g | |||||
1951 | 47.29 | 50.18 | 54.35 | 62.53 | 71.90 | 81.90 | 87.61 | 80.80 | a | 81.20 | 74.74 | 55.77 | 45.58 | 66.16 | ||||||||||||
1952 | 45.77 | 48.30 | f | 50.81 | e | 63.93 | 76.65 | 83.83 | 81.19 | 79.50 | a | 78.00 | 74.14 | b | 51.17 | a | 42.77 | 66.16 | a | |||||||
1953 | 52.42 | g | 50.21 | 56.13 | a | 66.20 | 69.50 | c | 82.74 | c | 82.13 | 80.84 | 81.80 | 69.61 | 60.23 | 45.87 | 67.75 | a | ||||||||
1954 | 49.94 | 59.89 | 56.28 | b | 69.07 | 73.90 | 81.43 | 84.40 | a | 82.90 | 79.10 | 71.71 | 62.76 | a | 48.77 | a | 68.35 | |||||||||
1955 | 38.68 | c | 41.19 | a | 53.07 | b | 60.46 | d | 67.04 | g | 77.28 | a | 78.90 | a | 76.63 | a | 77.26 | c | 69.63 | d | 53.16 | e | 50.17 | b | 61.49 | a |
1956 | 49.61 | c | 42.93 | 57.45 | b | 58.03 | a | 73.21 | c | 82.79 | b | 80.32 | c | 78.38 | b | 83.46 | d | 68.67 | d | 54.41 | h | 49.74 | d | 65.87 | a | |
1957 | 44.53 | a | 55.52 | c | 56.30 | k | 59.96 | c | 65.87 | a | 82.13 | 83.23 | a | 79.03 | a | 79.26 | c | 61.00 | b | 48.07 | c | 52.34 | b | 64.63 | a | |
1958 | 46.00 | b | 52.88 | b | 47.74 | 62.38 | a | 76.48 | 84.23 | 86.68 | 83.35 | 72.20 | 66.52 | 56.03 | 56.29 | c | 65.90 | |||||||||
1959 | 50.48 | 50.63 | a | 63.00 | 67.70 | 72.48 | 84.57 | 88.23 | 78.13 | 76.67 | 66.70 | a | 55.73 | 47.17 | a | 66.79 | ||||||||||
1960 | 43.00 | 44.48 | 60.58 | 67.77 | 72.65 | 85.53 | 88.90 | 85.97 | 79.73 | 64.10 | 57.90 | 44.10 | 66.23 | |||||||||||||
1961 | 48.71 | 52.75 | 55.77 | 67.76 | a | 74.20 | a | 87.63 | 87.48 | 80.90 | 74.31 | a | 67.89 | c | 53.57 | b | 45.87 | a | 66.40 | |||||||
1962 | 45.23 | 50.54 | 50.81 | 70.30 | 72.27 | a | 81.33 | 84.65 | 86.00 | 76.50 | 67.68 | 59.47 | 49.87 | 66.22 | ||||||||||||
1963 | 43.74 | 56.21 | 56.71 | 63.76 | a | 76.06 | 81.23 | 87.77 | 77.97 | 77.77 | 69.42 | 55.10 | 47.77 | 66.13 | ||||||||||||
1964 | 45.65 | 45.86 | 51.03 | 58.63 | 70.94 | 81.37 | 85.45 | 80.90 | 74.33 | 72.13 | 51.23 | 46.60 | a | 63.68 | ||||||||||||
1965 | 49.13 | 48.32 | 52.03 | 61.80 | 69.35 | 77.82 | b | 83.84 | 83.90 | 74.10 | 72.19 | 59.80 | 46.97 | 64.94 | ||||||||||||
1966 | 44.48 | 45.14 | 58.42 | 67.00 | 77.10 | 82.87 | 87.06 | 83.45 | 77.63 | 68.06 | 61.17 | 45.59 | b | 66.50 | ||||||||||||
1967 | 48.55 | 53.75 | 60.87 | 61.07 | 72.97 | 79.63 | 83.35 | 81.65 | 77.43 | 74.26 | 62.00 | 40.90 | 66.37 | |||||||||||||
1968 | 45.32 | 53.52 | 55.13 | 60.13 | 72.10 | 84.50 | 85.58 | 78.26 | 78.97 | 70.06 | 54.66 | a | 46.87 | a | 65.42 | |||||||||||
1969 | 49.39 | 47.11 | 52.45 | 66.90 | a | 73.84 | 81.57 | 85.52 | 85.39 | 78.77 | 64.87 | a | 52.43 | 51.81 | 65.84 | |||||||||||
1970 | 47.32 | 53.61 | 52.13 | 59.43 | 75.19 | 84.27 | 87.32 | 83.68 | 75.20 | 62.74 | 60.07 | 49.00 | 65.83 | |||||||||||||
1971 | 50.26 | 51.11 | 60.16 | 64.73 | 71.00 | a | 83.50 | 86.32 | 78.10 | 73.90 | 59.42 | 53.67 | 42.06 | 64.52 | ||||||||||||
1972 | 51.03 | 56.24 | 66.19 | 68.00 | 74.48 | 80.10 | 86.71 | 83.58 | 77.17 | 62.77 | 49.80 | 43.84 | 66.66 | |||||||||||||
1973 | 41.16 | 45.50 | 45.65 | 57.20 | 71.65 | 81.67 | 84.19 | 83.26 | 79.83 | a | 70.65 | 56.60 | 52.58 | 64.16 | ||||||||||||
1974 | 45.23 | 49.86 | 58.29 | 63.73 | 76.17 | a | 89.48 | a | 84.34 | b | 83.67 | a | 76.03 | 64.58 | 53.80 | e | 45.29 | c | 65.87 | |||||||
1975 | 46.16 | 47.54 | 51.45 | 56.31 | a | 69.73 | a | 81.70 | 84.90 | 84.87 | 75.80 | 69.42 | 56.66 | a | 45.26 | 64.15 | ||||||||||
1976 | 46.77 | 52.81 | b | 53.03 | 62.00 | a | 71.71 | 82.57 | 83.03 | 83.00 | 75.57 | 63.55 | 56.62 | a | 47.97 | a | 64.89 | |||||||||
1977 | 43.03 | a | 52.22 | a | 52.77 | 64.60 | 69.03 | 83.90 | 85.00 | 84.00 | 77.60 | 69.42 | 58.57 | 55.18 | c | 66.28 | ||||||||||
1978 | 46.81 | d | 45.36 | c | 57.47 | a | 63.80 | 72.00 | 84.83 | 88.06 | 82.97 | 78.03 | 70.17 | a | 52.90 | a | 42.32 | 65.39 | ||||||||
1979 | 40.65 | 49.78 | a | 52.77 | 65.50 | 67.77 | 80.87 | 87.52 | 82.74 | 82.17 | 73.43 | a | 50.90 | a | 50.07 | c | 65.35 | |||||||||
1980 | 44.43 | a | 52.22 | b | 51.89 | d | 63.33 | 68.00 | 85.07 | 88.61 | 82.24 | b | 79.00 | 67.68 | 59.68 | b | 53.07 | b | 66.27 | |||||||
1981 | 50.28 | b | 55.33 | a | 53.23 | 68.82 | b | 72.90 | 86.60 | 84.84 | 83.55 | 78.33 | 63.94 | 63.22 | l | 54.10 | j | 69.78 | b | |||||||
1982 | 45.58 | l | 49.37 | i | 54.62 | j | 64.17 | g | 71.00 | f | 82.44 | c | 84.07 | d | 81.92 | e | 78.60 | e | 66.23 | e | 52.29 | f | 47.42 | e | 73.45 | f |
1983 | 48.89 | l | 50.11 | i | 53.78 | h | 53.70 | j | 73.00 | f | 81.08 | d | 85.33 | d | 83.56 | f | 81.56 | e | 66.46 | g | 54.52 | g | 49.52 | f | 82.66 | i |
1984 | 48.67 | j | 55.79 | j | 60.45 | i | 63.67 | i | 79.90 | 81.46 | d | 83.36 | f | 82.89 | d | 78.12 | f | 58.57 | h | 56.83 | f | 47.15 | k | 81.42 | i | |
1985 | 44.57 | j | 48.62 | l | 54.67 | m | 67.05 | h | 72.38 | g | 83.39 | g | 84.54 | g | 81.87 | h | 71.59 | h | 64.18 | i | 51.46 | f | 47.63 | a | 47.63 | k |
1986 | 54.83 | b | 52.42 | b | 58.66 | b | 63.37 | c | 72.88 | g | 81.75 | f | 80.77 | e | 80.58 | g | 71.43 | g | 62.96 | h | 53.73 | h | 46.78 | m | 62.01 | g |
1987 | 45.26 | l | 45.82 | k | 51.09 | i | 67.50 | j | 68.40 | k | 82.70 | g | 81.91 | i | 78.43 | h | 75.20 | e | 68.96 | e | 52.78 | g | 46.77 | e | 63.64 | i |
1988 | 44.68 | l | 52.94 | m | 56.45 | i | 64.19 | i | 72.03 | a | 80.76 | a | 83.66 | b | 78.52 | b | 74.56 | c | 71.80 | f | 56.48 | i | 47.09 | i | 77.90 | g |
1989 | 44.16 | l | 48.56 | j | 62.86 | i | 70.45 | h | 74.89 | c | 82.50 | 86.14 | b | 79.48 | b | 78.63 | c | 67.24 | f | 57.56 | e | 52.62 | j | 76.53 | f | |
1990 | 48.33 | m | 45.59 | k | 56.83 | m | 65.88 | f | 72.76 | b | 86.84 | e | 82.27 | a | 79.17 | a | 75.11 | b | 68.85 | d | 55.28 | e | 45.95 | i | 74.32 | e |
1991 | 44.40 | k | 56.68 | i | 47.95 | k | 62.65 | j | 72.43 | c | 77.24 | e | 83.14 | i | 81.16 | f | 73.78 | g | 68.31 | e | 53.29 | f | 43.17 | g | 72.66 | i |
1992 | 37.44 | m | 48.17 | k | 53.95 | i | 68.50 | j | 66.08 | e | 80.00 | t | 82.29 | 79.61 | 76.97 | a | 70.03 | b | 50.72 | e | 41.93 | d | 66.80 | e | ||
1993 | 46.12 | n | 46.33 | j | 57.95 | i | 64.45 | h | 72.93 | c | 80.88 | f | 82.82 | c | 78.96 | g | 76.46 | f | 64.25 | k | 53.60 | j | 47.20 | f | 77.88 | j |
1994 | 47.28 | m | 48.22 | j | 59.04 | h | 62.61 | l | 69.00 | f | 84.56 | e | 84.96 | f | 82.89 | d | 76.96 | g | 65.08 | g | 49.24 | i | 47.00 | h | 83.72 | j |
1995 | 42.00 | l | 53.56 | j | 56.87 | h | 59.30 | j | 67.33 | g | 78.54 | f | 85.81 | e | 82.69 | e | 75.40 | e | 71.76 | f | 61.55 | j | 49.46 | e | 73.34 | h |
1996 | 51.78 | m | 54.00 | i | 55.32 | l | 66.76 | i | 77.45 | k | 84.52 | i | 84.45 | i | 81.80 | k | 72.78 | l | 69.35 | k | 52.89 | l | 51.52 | j | ----- | z |
1997 | 42.72 | m | 46.78 | j | 62.05 | j | 60.62 | i | 75.58 | l | 82.09 | g | 85.48 | f | 82.29 | j | 78.45 | h | 69.62 | g | 59.29 | i | 43.72 | f | ----- | z |
1998 | 51.15 | k | ----- | z | 56.95 | j | 59.90 | i | 70.00 | l | 80.52 | g | 84.41 | i | 83.27 | i | 79.41 | h | 67.36 | i | 58.94 | l | 47.86 | i | ----- | z |
1999 | 53.10 | j | 56.21 | i | 62.59 | i | 61.24 | i | 73.30 | k | 80.91 | h | 80.40 | k | 78.86 | j | 75.55 | j | 71.28 | m | 65.10 | j | 46.75 | g | ----- | z |
2000 | 54.84 | l | 57.47 | j | 55.14 | j | 72.60 | j | 79.68 | i | 83.45 | j | 86.75 | k | 82.05 | j | 82.40 | j | 66.76 | j | 49.30 | j | 51.35 | k | ----- | z |
2001 | 43.50 | k | 49.72 | j | 59.86 | j | 65.11 | k | 79.70 | k | 84.26 | k | 83.42 | l | 80.95 | i | 83.67 | o | 72.00 | i | 54.26 | k | 48.28 | m | ----- | z |
2002 | 46.60 | k | 54.05 | i | 60.22 | m | 71.30 | j | 76.73 | i | 85.64 | p | 84.80 | f | 83.43 | h | 76.90 | j | 64.73 | i | 56.78 | l | 44.86 | i | ----- | z |
2003 | 55.30 | k | 47.50 | j | 55.67 | m | 62.71 | m | 75.68 | l | 81.48 | i | 87.23 | i | 82.32 | i | 77.78 | g | 72.05 | i | 53.57 | i | 47.64 | i | ----- | z |
2004 | 45.17 | m | 45.50 | o | 62.74 | h | 62.29 | i | 75.00 | l | 82.79 | k | 83.05 | l | 80.14 | i | 76.00 | j | 62.50 | k | 48.41 | a | 45.71 | c | 47.06 | j |
2005 | 46.21 | c | 46.11 | 52.15 | e | 64.95 | j | 75.17 | m | 80.80 | j | 87.26 | l | 79.13 | h | 78.24 | m | 68.37 | l | 59.44 | l | 51.33 | g | 48.16 | i | |
2006 | 51.22 | m | 55.37 | i | 52.17 | h | 66.55 | j | 76.43 | j | 84.68 | h | 85.10 | j | 75.00 | 71.19 | d | 63.67 | g | 58.86 | b | 47.33 | g | 68.35 | i | |
2007 | 39.23 | e | 49.54 | d | 57.61 | h | 64.86 | i | 73.90 | j | 83.50 | d | 84.37 | a | 80.87 | a | 76.74 | c | 68.11 | c | 62.63 | c | 42.36 | f | 68.12 | d |
2008 | 41.56 | d | 49.72 | d | 56.14 | c | 64.74 | g | 68.64 | f | 82.81 | d | 81.61 | c | 79.97 | b | 75.43 | 67.71 | c | 57.19 | c | 46.53 | a | 63.87 | b | |
2009 | 47.96 | f | 51.46 | b | 57.29 | 63.50 | d | 74.93 | b | 76.04 | b | 84.60 | a | 83.73 | a | 75.69 | d | 63.28 | b | 57.64 | b | 39.65 | e | 66.17 | a | |
2010 | 42.82 | c | 43.40 | c | 52.12 | f | 62.04 | d | 69.13 | 82.00 | 82.18 | c | 80.89 | c | 79.54 | d | 66.29 | c | 50.80 | 50.81 | 64.54 | a | ||||
2011 | 33.56 | v | 47.13 | e | 61.48 | 64.23 | 67.68 | 81.61 | b | 81.94 | 83.77 | 76.70 | 65.90 | 52.40 | 40.16 | 65.73 | a | |||||||||
2012 | 49.28 | b | 48.76 | 57.86 | c | 67.80 | 75.48 | 85.31 | a | 81.84 | 81.68 | 76.03 | 69.39 | 58.70 | 46.68 | 66.57 | ||||||||||
2013 | 38.39 | 42.82 | 58.61 | 63.87 | 71.45 | 85.33 | 81.10 | 77.84 | 74.40 | 63.58 | 54.20 | 45.61 | 63.10 | |||||||||||||
2014 | 52.61 | 56.43 | 56.80 | a | 63.63 | 69.35 | 82.73 | 81.87 | 76.16 | 75.17 | 68.39 | 54.89 | c | 47.52 | f | 67.09 | a | |||||||||
2015 | 46.86 | c | 57.18 | 59.81 | 62.83 | 65.73 | a | 82.40 | 78.16 | 81.71 | 75.70 | 65.68 | 51.10 | 43.84 | 64.25 | |||||||||||
2016 | 45.48 | 54.45 | 60.16 | 62.07 | 67.10 | 84.43 | 83.74 | 78.33 | g | 74.40 | 70.48 | 53.50 | 47.35 | 63.92 | a | |||||||||||
2017 | 41.66 | b | 51.39 | 61.20 | a | 65.30 | 70.10 | 85.07 | 80.78 | d | 79.55 | 75.40 | 69.94 | 64.73 | 51.97 | 66.42 | ||||||||||
2018 | 50.94 | 50.52 | a | 56.67 | a | 67.93 | 72.97 | 84.17 | 82.97 | b | 79.90 | 78.00 | 58.13 | 52.43 | ----- | z | 66.78 | a | ||||||||
2019 | ----- | z | 41.91 | f | 55.63 | a | 64.40 | 63.52 | 79.40 | 84.94 | 84.41 | b | 75.72 | a | 64.87 | a | 55.86 | a | 44.52 | 67.33 | b | |||||
2020 | 47.23 | 51.14 | 53.42 | 64.00 | 75.29 | 81.43 | 83.87 | 86.84 | 79.92 | d | 72.23 | 59.20 | 46.83 | a | 66.78 | |||||||||||
2021 | 46.03 | a | 55.67 | s | 53.25 | c | 65.89 | k | 73.71 | 84.87 | 85.77 | r | 79.31 | b | 75.10 | 63.84 | 59.00 | i | 49.65 | 65.72 | d | |||||
2022 | 48.06 | 48.67 | a | 55.80 | f | 67.41 | c | 74.71 | 82.80 | 82.83 | a | 76.90 | b | 75.86 | b | 61.61 | c | 50.50 | d | 45.74 | 65.01 | a | ||||
2023 | 41.79 | b | 42.42 | b | 48.37 | d | 63.10 | 69.12 | e | 76.17 | 88.00 | 80.90 | a | 77.07 | c | 67.74 | 54.80 | 48.65 | 63.18 | |||||||
2024 | 45.57 | c | 48.21 | a | 53.20 | u | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 46.89 | j |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 46.11 | 50.09 | 55.55 | 63.88 | 71.97 | 82.61 | 84.31 | 81.41 | 77.02 | 67.73 | 55.74 | 47.36 | 65.63 | |||||||||||||
S.D. | 3.67 | 4.31 | 4.22 | 3.27 | 3.33 | 2.67 | 2.53 | 2.70 | 2.44 | 3.91 | 4.02 | 3.84 | 1.18 | |||||||||||||
SKEW | -0.10 | -0.08 | 0.06 | -0.23 | -0.29 | -0.30 | -0.15 | -0.24 | 0.37 | -0.16 | 0.16 | 0.33 | -0.44 | |||||||||||||
MAX | 54.83 | 59.89 | 66.19 | 70.30 | 79.90 | 89.48 | 88.90 | 86.84 | 83.46 | 76.55 | 64.73 | 56.61 | 68.35 | |||||||||||||
MIN | 38.39 | 41.19 | 45.65 | 56.31 | 63.52 | 76.04 | 78.16 | 75.00 | 71.19 | 58.13 | 48.07 | 39.65 | 63.10 | |||||||||||||
YRS | 47 | 48 | 46 | 46 | 52 | 56 | 56 | 57 | 58 | 54 | 51 | 51 | 31 |