YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1949 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 89.08 | g | 88.32 | 84.27 | 67.94 | 65.97 | 44.68 | 70.23 | g | |||||
1950 | 48.65 | 55.39 | 62.04 | d | 72.10 | ----- | z | 88.70 | 88.23 | 89.16 | 79.30 | 79.84 | 63.80 | 57.35 | 71.32 | a | ||||||||||
1951 | 47.61 | 50.39 | 57.68 | 66.03 | 77.16 | 85.47 | 93.26 | 87.23 | 84.37 | 69.74 | 55.00 | 45.94 | 68.32 | |||||||||||||
1952 | 48.26 | 50.07 | 52.45 | 67.70 | 77.45 | 86.47 | 90.40 | a | 90.61 | 84.10 | 78.00 | 49.27 | 43.52 | 68.19 | ||||||||||||
1953 | 51.45 | 52.07 | 60.87 | 66.40 | 72.32 | 89.70 | 91.81 | 89.00 | 87.07 | a | 71.84 | 58.60 | 38.90 | a | 69.17 | |||||||||||
1954 | 45.97 | 57.54 | 57.23 | a | 76.54 | f | ----- | z | ----- | z | ----- | z | ----- | z | 87.67 | 74.52 | 65.79 | a | 49.90 | a | 62.66 | e | ||||
1955 | 42.03 | 45.15 | a | 59.75 | c | 67.20 | 73.26 | l | ----- | z | ----- | z | ----- | z | 82.74 | g | 75.18 | c | 58.73 | d | 48.45 | i | 58.01 | f | ||
1956 | 52.55 | 44.00 | 62.76 | b | 66.61 | b | 77.67 | p | ----- | z | ----- | z | ----- | z | 89.50 | d | ----- | z | ----- | z | ----- | z | 63.08 | g | ||
1957 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1958 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1959 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1960 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1961 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1962 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1963 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1964 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1965 | ----- | z | ----- | z | ----- | z | ----- | z | 71.85 | d | 82.67 | 88.80 | a | 89.81 | 78.13 | 76.26 | 60.93 | 48.39 | 74.60 | d | ||||||
1966 | 45.55 | 45.64 | 61.61 | 70.70 | 80.42 | 87.70 | 92.68 | 88.39 | 81.33 | 72.23 | 62.20 | 46.80 | a | 69.60 | ||||||||||||
1967 | 43.39 | 55.89 | 63.39 | 66.83 | 75.87 | 83.20 | 90.94 | 86.23 | a | 80.37 | 74.19 | 61.93 | 37.42 | 68.30 | ||||||||||||
1968 | 40.23 | 54.96 | a | 57.84 | 62.97 | 74.94 | 86.77 | 88.90 | 84.13 | 81.18 | b | 71.19 | 54.00 | 43.87 | a | 66.75 | ||||||||||
1969 | 46.77 | 49.11 | 53.39 | 68.93 | 77.19 | 84.87 | 90.52 | 89.55 | 83.13 | 66.77 | 56.40 | 54.76 | f | 69.69 | a | |||||||||||
1970 | 47.10 | a | 56.54 | 54.42 | 61.67 | 78.39 | 86.43 | 92.58 | 89.77 | 78.63 | 65.13 | a | 60.47 | 50.21 | b | 68.44 | ||||||||||
1971 | 49.52 | 51.39 | 62.55 | 67.03 | 73.55 | 87.33 | 94.00 | 86.90 | 80.33 | 64.26 | 56.53 | 40.41 | b | 67.82 | ||||||||||||
1972 | 50.58 | 57.93 | 67.97 | 69.70 | 78.10 | 85.17 | 93.65 | 87.48 | 81.66 | a | 65.13 | ----- | z | 45.76 | b | 71.19 | a | |||||||||
1973 | 41.10 | 47.89 | ----- | z | 59.66 | a | 74.45 | 85.87 | 90.06 | 89.39 | 81.87 | 73.23 | 57.93 | 51.17 | b | 68.42 | a | |||||||||
1974 | 43.00 | 51.39 | 62.52 | 66.93 | 80.32 | 92.23 | 88.52 | 87.32 | 81.17 | 68.74 | 57.47 | 46.55 | 68.85 | |||||||||||||
1975 | 45.52 | 48.50 | 54.97 | 60.67 | 73.26 | 85.73 | 89.35 | 88.65 | 79.17 | 73.13 | 58.60 | 41.74 | l | 68.87 | a | |||||||||||
1976 | 49.19 | 57.72 | 58.35 | 68.27 | 77.10 | 87.30 | ----- | z | 87.13 | 79.70 | 66.70 | a | 59.73 | 51.41 | b | 67.51 | a | |||||||||
1977 | 39.00 | 54.07 | 57.26 | 68.90 | 74.29 | 88.53 | 89.77 | 82.90 | 81.10 | 72.52 | 59.73 | 54.47 | a | 68.55 | ||||||||||||
1978 | 47.50 | a | 49.50 | 60.29 | 67.73 | 73.81 | 89.37 | 93.58 | 87.32 | 81.97 | a | 74.50 | a | 54.87 | 39.76 | b | 68.35 | |||||||||
1979 | 40.87 | 49.07 | 55.16 | 68.03 | 72.16 | 85.30 | 91.52 | 87.87 | 87.13 | 75.93 | b | 52.52 | a | 51.54 | c | 68.09 | ||||||||||
1980 | 45.06 | 53.46 | c | 55.55 | 67.64 | b | 73.36 | c | 89.55 | a | 92.89 | c | 88.03 | b | 82.96 | b | 71.00 | 62.38 | f | 55.26 | d | 70.43 | a | |||
1981 | 54.37 | a | 56.18 | 55.42 | 73.04 | b | 75.23 | 90.14 | a | 90.68 | 89.00 | b | 81.00 | 69.11 | c | 63.07 | 54.00 | a | 70.93 | |||||||
1982 | 43.90 | 49.36 | 56.43 | c | 66.90 | 73.83 | b | 84.83 | 88.90 | b | 86.40 | a | 80.62 | a | 68.19 | 53.87 | 44.46 | c | 66.47 | |||||||
1983 | 47.07 | a | 51.64 | c | 56.00 | a | 60.03 | a | 74.35 | 84.57 | 90.87 | 89.24 | f | 85.76 | e | 71.26 | 55.78 | c | 51.16 | f | 67.73 | b | ||||
1984 | 49.68 | c | 55.18 | g | 60.04 | h | 63.64 | e | 86.25 | k | 86.86 | h | 90.64 | c | 86.44 | f | 80.93 | c | 61.19 | d | 58.81 | c | 46.76 | f | 67.48 | f |
1985 | 46.70 | a | 47.93 | 59.29 | c | 70.87 | 77.28 | b | 91.03 | a | 91.66 | b | 90.48 | b | 79.30 | c | 70.35 | 56.55 | h | 53.93 | p | 72.49 | b | |||
1986 | 58.23 | i | 54.25 | 57.95 | l | ----- | z | 80.36 | q | 88.17 | 89.00 | a | 91.20 | a | 78.62 | a | 66.93 | d | 57.60 | e | 47.66 | b | 71.68 | d | ||
1987 | 43.75 | c | 48.22 | a | 55.26 | 69.80 | 75.90 | 89.10 | a | 89.80 | a | 87.03 | 80.85 | d | 74.36 | c | 55.75 | b | 44.93 | b | 67.90 | |||||
1988 | 41.61 | 53.17 | 59.37 | d | 66.30 | c | 77.30 | d | 87.84 | e | 91.14 | b | 86.10 | 79.82 | h | 75.31 | b | 56.86 | a | 47.22 | d | 67.47 | a | |||
1989 | 45.61 | c | 52.36 | 66.00 | f | 75.27 | 80.41 | d | 87.86 | b | 93.00 | a | 87.46 | c | 83.48 | a | 69.39 | c | 59.55 | a | 49.61 | 71.27 | a | |||
1990 | 48.67 | a | 49.57 | 60.80 | f | 71.86 | i | 75.93 | a | 92.24 | a | 89.78 | d | 87.36 | c | 82.24 | a | 71.26 | 57.43 | b | 39.94 | 69.44 | b | |||
1991 | 42.84 | 56.79 | 54.71 | 67.00 | b | 76.43 | c | 83.97 | a | 91.83 | b | 89.19 | e | 82.11 | b | 73.10 | a | 56.21 | b | 45.32 | c | 68.29 | ||||
1992 | 39.68 | 51.81 | b | 58.37 | a | 72.20 | 73.58 | 84.03 | 87.59 | b | 87.77 | a | 83.20 | 72.10 | a | 51.00 | 38.90 | a | 66.69 | |||||||
1993 | 48.31 | b | 50.80 | c | 60.50 | a | 68.70 | 77.14 | b | 86.53 | 90.57 | a | 88.39 | 82.55 | a | 68.53 | a | 53.93 | c | 49.59 | b | 68.79 | ||||
1994 | 50.37 | d | 50.07 | a | ----- | z | 67.17 | a | 76.84 | 91.73 | 92.97 | b | 92.52 | 82.83 | 68.00 | 52.93 | 50.52 | b | 70.54 | a | ||||||
1995 | 46.83 | b | 59.46 | 60.00 | a | 63.48 | a | 70.94 | 84.43 | 92.23 | 92.17 | a | 83.77 | 73.29 | 63.53 | 49.77 | a | 69.99 | ||||||||
1996 | 51.32 | 56.64 | d | 60.79 | b | 70.36 | e | 82.48 | 89.11 | b | 94.00 | b | 90.55 | 78.07 | a | 67.31 | e | 56.79 | a | 50.10 | 70.63 | |||||
1997 | 43.21 | b | 52.41 | a | 65.30 | a | 64.31 | a | 79.83 | b | 85.59 | a | 90.03 | 88.94 | 83.83 | 69.26 | 58.97 | 43.10 | b | 68.73 | ||||||
1998 | 49.58 | 46.21 | 57.90 | a | 63.67 | 78.30 | a | 85.73 | 92.00 | 91.00 | 86.07 | 69.90 | 58.47 | 51.04 | c | 69.16 | ||||||||||
1999 | 54.59 | b | 59.35 | h | 65.80 | f | 63.39 | l | 76.00 | e | 86.63 | c | 88.57 | a | 85.38 | e | 79.17 | g | 74.93 | d | 67.86 | a | 49.47 | a | 72.93 | d |
2000 | 53.71 | 58.89 | b | 58.37 | a | 73.14 | a | 82.68 | 88.93 | b | 92.84 | 90.23 | a | 85.00 | 67.83 | a | 49.80 | e | 52.81 | 71.19 | ||||||
2001 | 44.93 | b | 53.52 | c | 60.26 | 70.04 | c | 81.10 | a | 89.97 | a | 90.67 | a | 87.45 | 85.75 | f | 74.26 | 59.21 | a | 55.43 | c | 69.71 | a | |||
2002 | 50.97 | a | 58.54 | 62.03 | b | 72.33 | 77.90 | b | 91.17 | 91.56 | m | 92.07 | a | 82.17 | l | 66.89 | c | 56.76 | e | 50.05 | k | 69.85 | c | |||
2003 | 55.39 | 49.56 | c | 59.34 | b | 65.30 | g | 77.31 | b | 86.55 | a | 94.42 | 87.39 | c | 82.62 | a | 76.71 | g | 57.27 | h | 50.42 | g | 74.07 | d | ||
2004 | 47.97 | b | 50.64 | d | 67.20 | k | 68.18 | s | 79.84 | l | 87.30 | 90.81 | j | ----- | z | 75.83 | l | 66.83 | a | 56.26 | c | 50.43 | h | 61.80 | g | |
2005 | 54.77 | 49.50 | x | 57.36 | c | 66.19 | n | 81.00 | h | 86.42 | f | 95.38 | e | 85.06 | 83.79 | f | 71.46 | e | 62.76 | i | 52.83 | g | 72.81 | g | ||
2006 | 54.59 | b | 57.60 | c | 60.53 | n | 71.04 | d | 83.76 | j | 92.29 | i | 92.07 | d | 85.57 | a | 77.04 | b | 69.47 | l | ----- | z | 49.92 | g | 72.98 | f |
2007 | 44.13 | 53.75 | d | 67.50 | i | ----- | z | 78.25 | k | 87.56 | l | 92.27 | e | 89.44 | m | 81.58 | r | 75.00 | o | ----- | z | 45.83 | s | 63.38 | i | |
2008 | 40.22 | m | 47.96 | c | 58.69 | e | 70.33 | x | 75.96 | h | 87.89 | b | 88.33 | a | 90.00 | k | 81.95 | j | 71.33 | g | 61.86 | i | 49.17 | g | 70.72 | h |
2009 | 49.07 | d | 56.00 | h | 62.80 | a | ----- | z | 79.65 | h | 82.88 | d | ----- | z | 89.82 | c | 80.28 | e | 72.18 | n | 64.67 | f | ----- | z | 72.97 | g |
2010 | 44.38 | b | 46.35 | b | 58.47 | a | 67.46 | b | 75.74 | 88.62 | f | 91.04 | h | 85.20 | f | 84.12 | d | 73.48 | h | 54.65 | g | 54.65 | e | 61.60 | e | |
2011 | 43.14 | c | 48.64 | 63.97 | 67.25 | r | 75.78 | m | 89.55 | h | 89.81 | e | 90.50 | s | 80.92 | f | 72.88 | f | 57.18 | b | 47.15 | d | 58.31 | f | ||
2012 | 53.25 | o | 50.30 | b | 60.59 | b | 71.80 | 80.48 | 91.47 | 89.48 | 89.19 | 81.83 | 72.50 | a | 62.70 | 48.34 | b | 72.61 | a | |||||||
2013 | 43.83 | b | 47.25 | 62.54 | e | 68.52 | a | 76.96 | d | 91.14 | h | 88.77 | 85.71 | 81.67 | c | 69.96 | g | 59.52 | e | 46.72 | b | 66.15 | b | |||
2014 | 53.70 | h | 59.19 | g | 61.06 | 66.77 | 76.52 | d | 88.60 | 91.40 | a | 84.87 | a | 83.32 | b | 72.25 | c | 59.97 | 46.73 | a | 73.15 | b | ||||
2015 | 50.19 | 59.57 | 63.71 | 66.57 | 73.19 | 87.52 | c | 86.45 | b | 89.61 | 83.48 | a | 71.90 | b | 57.30 | 46.75 | c | 69.69 | ||||||||
2016 | 45.80 | a | 59.10 | 63.70 | a | 66.70 | 74.28 | b | 91.90 | 91.60 | a | 84.16 | 83.67 | f | 75.21 | b | 59.28 | a | 50.83 | b | 69.32 | a | ||||
2017 | 46.32 | 55.68 | 66.06 | 68.53 | 74.74 | 91.20 | 89.29 | 87.50 | a | 81.47 | 74.97 | 66.50 | 53.16 | f | 72.93 | a | ||||||||||
2018 | 54.56 | d | 53.87 | e | 59.80 | a | 72.31 | d | 80.23 | 90.50 | 90.83 | a | 89.40 | f | 84.05 | j | 65.57 | q | 57.46 | f | 48.00 | h | 71.73 | e | ||
2019 | 45.09 | h | 45.29 | g | 60.63 | l | 67.72 | l | 69.95 | j | 85.27 | 91.74 | 89.97 | 84.50 | j | 72.36 | i | 62.50 | f | 48.58 | 78.89 | h | ||||
2020 | 49.33 | a | 53.11 | a | 60.45 | 68.57 | 82.23 | 87.92 | f | 91.00 | 93.55 | 84.86 | a | 76.10 | 63.14 | a | 50.20 | a | 70.23 | a | ||||||
2021 | 48.87 | 53.21 | 57.58 | 70.86 | b | 80.67 | a | 91.27 | 89.53 | a | 87.77 | 84.03 | 69.77 | a | 63.34 | a | 52.10 | 70.75 | ||||||||
2022 | 50.19 | 52.21 | 63.65 | 72.03 | 80.87 | 88.27 | 91.03 | a | 85.16 | 83.93 | 66.74 | 53.63 | 48.69 | b | 69.70 | |||||||||||
2023 | 44.90 | a | 49.50 | 53.94 | 68.80 | 77.03 | 84.30 | 95.74 | d | 89.00 | a | 83.03 | 73.68 | 60.03 | 51.83 | a | 69.32 | |||||||||
2024 | 47.32 | 55.34 | 57.61 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 53.43 | i | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 47.27 | 52.32 | 59.44 | 67.92 | 76.72 | 87.58 | 91.02 | 88.22 | 82.37 | 71.11 | 58.40 | 47.99 | 68.84 | |||||||||||||
S.D. | 4.10 | 3.99 | 3.41 | 3.42 | 2.95 | 2.60 | 1.96 | 2.22 | 2.57 | 3.75 | 4.09 | 4.62 | 1.23 | |||||||||||||
SKEW | 0.12 | 0.06 | 0.12 | -0.42 | 0.21 | 0.08 | 0.20 | -0.00 | 0.36 | -0.18 | 0.10 | -0.37 | 0.05 | |||||||||||||
MAX | 55.39 | 59.57 | 67.97 | 75.27 | 82.68 | 92.24 | 95.74 | 93.55 | 89.50 | 79.84 | 67.86 | 57.35 | 71.19 | |||||||||||||
MIN | 39.00 | 44.00 | 52.45 | 59.66 | 70.94 | 82.67 | 86.45 | 82.90 | 77.04 | 61.19 | 49.27 | 37.42 | 66.47 | |||||||||||||
YRS | 61 | 60 | 55 | 53 | 52 | 55 | 58 | 56 | 54 | 56 | 54 | 50 | 27 |