YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1939 | ----- | z | ----- | z | ----- | z | ----- | z | 77.71 | 84.55 | 91.52 | 91.41 | h | ----- | z | 65.40 | a | 59.12 | 52.44 | 71.79 | f | |||||
1940 | ----- | z | ----- | z | ----- | z | 68.70 | b | 81.58 | a | 88.28 | 92.17 | a | 92.76 | ----- | z | 68.23 | 52.52 | 49.43 | b | 74.21 | d | ||||
1941 | 48.67 | a | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 89.68 | a | 85.23 | 77.13 | ----- | z | 53.78 | 46.60 | 66.85 | f | ||||
1942 | 48.40 | 48.21 | 55.76 | 71.45 | 73.18 | 83.85 | 92.55 | 87.79 | q | 80.75 | 70.50 | 56.08 | 48.92 | 66.33 | a | |||||||||||
1943 | 46.36 | b | 54.09 | 58.45 | ----- | z | 74.81 | 80.29 | b | 87.48 | 89.60 | a | 83.71 | a | 69.13 | a | 54.03 | 49.19 | b | 67.92 | a | |||||
1944 | 46.10 | a | 48.22 | 54.95 | 62.45 | b | 74.43 | a | 78.61 | b | 86.93 | a | 90.45 | 81.30 | 69.53 | p | 53.28 | a | 46.98 | b | 65.79 | a | ||||
1945 | 45.43 | p | 50.92 | c | 54.75 | a | 64.62 | a | 75.78 | a | 81.14 | b | 93.00 | b | 89.75 | a | 81.31 | c | 69.26 | d | 52.15 | 46.59 | b | 69.03 | a | |
1946 | 44.94 | 49.20 | 57.29 | c | 70.38 | a | 76.91 | d | 86.02 | b | 90.66 | 89.75 | e | 80.83 | 62.58 | 51.64 | b | 47.97 | 67.35 | |||||||
1947 | 43.24 | 53.95 | 60.84 | 67.13 | 79.62 | a | 83.62 | b | 90.21 | c | 88.55 | 85.35 | 69.15 | 51.07 | 45.87 | 68.22 | ||||||||||
1948 | 44.87 | 44.12 | 51.23 | c | 63.87 | 69.46 | s | ----- | z | 90.08 | f | 87.65 | 82.35 | 69.35 | 50.40 | 43.29 | 59.68 | c | ||||||||
1949 | 36.34 | 44.56 | a | 55.81 | 64.59 | h | 74.18 | a | 85.05 | 90.80 | a | 86.53 | 82.42 | 65.63 | a | 58.22 | 44.94 | 65.86 | a | |||||||
1950 | 43.02 | 53.55 | 58.35 | 70.20 | 74.40 | 82.30 | 91.52 | 87.97 | a | 80.23 | 71.24 | 57.25 | 50.58 | 68.38 | ||||||||||||
1951 | 44.80 | a | 48.82 | 57.07 | a | 66.10 | 74.11 | 81.70 | 90.76 | 86.50 | 81.84 | a | 66.33 | a | 52.95 | 42.98 | 66.16 | |||||||||
1952 | 42.56 | 48.93 | 51.88 | b | 66.95 | 75.69 | 79.73 | ----- | z | 90.64 | b | 78.64 | a | 65.61 | i | 49.44 | f | 46.79 | e | 64.65 | c | |||||
1953 | 47.39 | 47.54 | 56.50 | 63.63 | 67.74 | b | 80.53 | 91.77 | 86.82 | 78.68 | 64.71 | 53.58 | 41.59 | b | 65.04 | |||||||||||
1954 | 43.35 | 54.80 | 53.34 | b | 69.05 | 77.47 | 81.60 | 91.05 | 85.80 | a | 79.47 | 67.70 | a | 56.55 | 43.97 | a | 67.01 | |||||||||
1955 | 40.69 | 43.96 | 54.71 | b | 62.02 | 71.80 | a | 79.40 | 87.37 | a | 87.88 | e | 77.02 | d | 68.34 | b | 52.90 | a | 48.24 | b | 64.53 | |||||
1956 | 46.98 | e | 43.89 | a | 54.73 | 64.03 | a | 73.26 | 81.32 | 86.66 | 83.19 | 79.40 | 65.08 | 50.28 | 45.55 | 64.53 | ||||||||||
1957 | 44.52 | 55.68 | 57.92 | 63.07 | 68.92 | 83.76 | a | 88.06 | 86.90 | a | 77.40 | 64.84 | 50.02 | 45.55 | 65.55 | |||||||||||
1958 | 45.77 | 51.43 | 52.76 | 60.12 | 73.45 | 79.33 | 82.85 | 89.81 | 80.07 | 68.93 | a | 51.45 | a | 45.45 | 65.12 | |||||||||||
1959 | 43.42 | 46.70 | 54.84 | 67.35 | 71.92 | 84.97 | 91.53 | 86.89 | 76.05 | a | 67.02 | 53.34 | a | 47.94 | 66.00 | |||||||||||
1960 | 41.95 | 46.21 | 58.06 | 65.88 | 73.19 | 85.07 | a | 88.10 | 86.73 | 80.83 | 66.19 | 53.32 | 44.77 | 65.86 | ||||||||||||
1961 | 44.15 | 50.04 | 55.53 | 64.10 | 71.32 | 84.70 | 89.76 | 87.71 | 74.85 | 65.28 | b | 52.02 | d | 43.79 | c | 65.27 | ||||||||||
1962 | 43.72 | a | 50.96 | c | 51.59 | i | 69.37 | c | 70.83 | e | 81.35 | c | 86.21 | b | 86.90 | a | 80.72 | 69.90 | b | 56.91 | c | 46.88 | g | 69.69 | b | |
1963 | 41.56 | g | 55.56 | d | 53.50 | g | 60.43 | h | 75.56 | f | 78.75 | j | 86.81 | e | 88.52 | c | 81.34 | e | 72.00 | g | 56.92 | d | 44.88 | g | 73.83 | g |
1964 | 43.78 | f | ----- | z | 53.48 | i | 64.27 | h | 71.47 | n | 78.65 | j | 89.27 | c | 88.33 | e | 76.21 | f | 71.56 | 49.50 | n | 45.55 | c | 73.68 | h | |
1965 | 47.97 | n | 51.17 | g | 54.74 | j | 64.20 | h | 71.32 | l | 76.92 | f | 86.75 | i | 84.80 | k | 73.32 | h | 68.19 | b | 58.58 | q | 47.17 | h | 68.19 | k |
1966 | 42.50 | j | 46.33 | j | 58.63 | h | 63.50 | m | 75.12 | n | 82.29 | i | 88.08 | k | 89.39 | h | 79.79 | m | 68.10 | e | 55.48 | i | 47.92 | l | 68.10 | k |
1967 | 45.40 | k | 48.48 | h | 59.69 | d | 56.53 | k | 71.11 | i | 78.19 | n | 90.74 | h | 90.98 | e | 80.77 | d | 68.87 | 55.93 | b | 42.78 | a | 66.50 | f | |
1968 | 45.72 | a | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 45.72 | k |
1969 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1970 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1971 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1972 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1973 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1974 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1975 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1976 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1977 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1978 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1979 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1980 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1981 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1982 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1983 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1984 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1985 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1986 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1987 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1988 | ----- | z | ----- | z | 57.73 | a | 64.65 | 72.95 | b | 86.62 | 92.74 | b | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 74.94 | g | ||
1989 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1990 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1991 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1992 | ----- | z | 55.03 | 57.94 | 69.88 | 76.77 | 82.25 | 88.26 | 90.02 | 82.82 | 70.63 | 52.28 | 44.35 | 70.02 | a | |||||||||||
1993 | 46.34 | 51.46 | 60.21 | 66.30 | 75.40 | 81.25 | 86.98 | 87.90 | 79.80 | 68.05 | 50.03 | 45.89 | 66.64 | |||||||||||||
1994 | 47.53 | 48.46 | 62.68 | 67.26 | a | 75.53 | 88.35 | 92.45 | 91.98 | 81.87 | 65.97 | 49.07 | 48.18 | 68.28 | ||||||||||||
1995 | 48.76 | 58.36 | 58.18 | 64.70 | 71.26 | 81.70 | 91.42 | 91.95 | 84.22 | 69.45 | 59.17 | 49.21 | 69.03 | |||||||||||||
1996 | 47.53 | 55.34 | 60.34 | 69.30 | 78.42 | 86.50 | 93.89 | 91.89 | 80.43 | 66.90 | 56.75 | 47.90 | 69.60 | |||||||||||||
1997 | 49.10 | 52.77 | 63.00 | 65.33 | 81.42 | 84.25 | 87.52 | 89.16 | 81.43 | 66.05 | 55.00 | 45.13 | 68.35 | |||||||||||||
1998 | 46.97 | 49.27 | 56.84 | 61.07 | 69.87 | 79.55 | 89.63 | a | 90.00 | 79.98 | 65.32 | 52.68 | 45.02 | 65.52 | ||||||||||||
1999 | 49.48 | 52.45 | 61.05 | 60.39 | c | 75.61 | 84.43 | b | 90.53 | b | 89.84 | b | 82.50 | b | 70.18 | 57.76 | a | 48.03 | a | 68.52 | ||||||
2000 | 49.95 | b | 53.42 | c | 59.87 | a | 71.83 | 81.02 | a | 90.19 | c | 91.06 | 91.71 | b | 82.57 | a | 66.47 | k | 49.91 | h | 48.81 | 72.04 | b | |||
2001 | 47.27 | c | 52.93 | a | 62.04 | c | 67.10 | e | 82.50 | b | 86.72 | c | 90.63 | 91.52 | c | 84.71 | a | 71.09 | b | 59.44 | m | 44.65 | a | 71.01 | a | |
2002 | 45.37 | e | 52.93 | 56.77 | c | 70.50 | a | 76.08 | a | 87.75 | 95.02 | 88.62 | b | 82.21 | a | 67.82 | a | 56.70 | b | 47.31 | b | 68.92 | ||||
2003 | 53.43 | b | 51.75 | b | 59.45 | a | 64.00 | a | 77.61 | 87.74 | a | 95.43 | b | 91.18 | a | 84.53 | 75.75 | a | 53.14 | b | 46.78 | a | 70.07 | |||
2004 | 47.60 | 49.36 | 67.03 | 68.41 | b | 77.55 | c | 86.04 | b | 91.95 | 88.68 | 80.22 | a | 69.21 | e | 52.87 | 47.52 | a | 68.87 | |||||||
2005 | 49.38 | c | 52.41 | a | 58.31 | 64.22 | a | 77.11 | 83.72 | 92.02 | 88.00 | 79.07 | 68.95 | 56.87 | 45.75 | a | 67.98 | |||||||||
2006 | 47.66 | 51.79 | 53.44 | 67.16 | a | 80.66 | b | 87.38 | a | 92.80 | a | 88.13 | 78.90 | 64.48 | 55.63 | 43.88 | a | 67.66 | ||||||||
2007 | 42.76 | 51.54 | a | 62.19 | 67.18 | 77.15 | 84.60 | 92.33 | a | 89.47 | 80.33 | 66.84 | 57.92 | 44.71 | 68.08 | |||||||||||
2008 | 45.69 | 49.72 | 58.61 | 65.60 | 73.27 | 85.72 | 92.47 | 91.29 | 83.91 | a | 70.98 | 59.05 | 44.82 | 68.43 | ||||||||||||
2009 | 50.17 | a | 52.18 | 59.03 | a | 65.63 | 82.73 | 82.82 | 94.48 | 89.94 | 86.58 | 67.69 | 58.05 | 46.10 | 69.62 | |||||||||||
2010 | 48.73 | 53.27 | 58.35 | 64.10 | 71.56 | 86.77 | 96.56 | 90.98 | 83.23 | 70.90 | 54.57 | 50.13 | 69.10 | |||||||||||||
2011 | 45.79 | 48.45 | 57.06 | 64.28 | 69.84 | 82.75 | 89.61 | 90.85 | 82.85 | 68.10 | 51.75 | 43.63 | 66.25 | |||||||||||||
2012 | 47.10 | 51.43 | 58.18 | 68.22 | 79.56 | 87.38 | 91.66 | 92.53 | 85.07 | 70.13 | 57.85 | 47.10 | 69.68 | |||||||||||||
2013 | 44.11 | 49.07 | 62.10 | 67.63 | 77.44 | 89.02 | 94.65 | 89.58 | 80.80 | 66.13 | 56.98 | 44.81 | 68.53 | |||||||||||||
2014 | 48.89 | 53.52 | 60.87 | 67.33 | 76.37 | 86.57 | 93.11 | 87.24 | 84.88 | 72.74 | 56.22 | 48.97 | 69.73 | |||||||||||||
2015 | 49.31 | 56.38 | 64.32 | 66.67 | 73.50 | 90.07 | 89.60 | 91.53 | 86.17 | 73.45 | 52.77 | 43.08 | 69.74 | |||||||||||||
2016 | 45.97 | 55.41 | 61.45 | 66.87 | 74.35 | 90.53 | 93.27 | 90.18 | 81.28 | 72.02 | 59.63 | 46.27 | 69.77 | |||||||||||||
2017 | 47.47 | 54.93 | 62.98 | 66.53 | 75.03 | 89.30 | 94.06 | 90.94 | 81.48 | 69.06 | 59.48 | 48.61 | 69.99 | |||||||||||||
2018 | 50.74 | 51.05 | 58.02 | 71.35 | 76.90 | 88.58 | 95.35 | 92.53 | 84.88 | 68.94 | 55.02 | 47.00 | 70.03 | |||||||||||||
2019 | 47.55 | 45.55 | 59.16 | 69.43 | 70.89 | 86.32 | 92.69 | 92.34 | 83.30 | 64.73 | 55.57 | 46.39 | 67.83 | |||||||||||||
2020 | 48.55 | 50.66 | 57.31 | 65.93 | 78.47 | 84.68 | 91.03 | 92.73 | 84.08 | 71.82 | 57.52 | 45.65 | 69.04 | |||||||||||||
2021 | 47.18 | 51.14 | 55.60 | 68.83 | 76.32 | a | 89.62 | 93.65 | 90.74 | 85.05 | 66.55 | 61.60 | 47.05 | 69.44 | ||||||||||||
2022 | 47.73 | 50.62 | 58.68 | 66.90 | 76.02 | 87.08 | 92.97 | 91.03 | 85.70 | 72.56 | 50.93 | 45.87 | 68.84 | |||||||||||||
2023 | 46.71 | 47.95 | 53.11 | 65.18 | 76.60 | 81.27 | 95.29 | 88.77 | 80.70 | 70.95 | 56.73 | 49.76 | 67.75 | |||||||||||||
2024 | 47.11 | 52.67 | 57.96 | c | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 52.58 | i | ||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 46.39 | 50.99 | 58.08 | 66.42 | 75.42 | 84.63 | 91.09 | 89.39 | 81.57 | 68.48 | 54.82 | 46.42 | 67.86 | |||||||||||||
S.D. | 2.84 | 3.35 | 3.23 | 2.80 | 3.46 | 3.20 | 2.76 | 2.13 | 2.60 | 2.64 | 3.00 | 2.20 | 1.69 | |||||||||||||
SKEW | -0.71 | -0.29 | 0.20 | -0.15 | 0.07 | -0.02 | -0.47 | -0.45 | -0.23 | 0.21 | 0.06 | 0.25 | -0.54 | |||||||||||||
MAX | 53.43 | 58.36 | 67.03 | 71.83 | 82.73 | 90.53 | 96.56 | 92.76 | 86.58 | 75.75 | 61.60 | 52.44 | 70.07 | |||||||||||||
MIN | 36.34 | 43.89 | 51.23 | 60.12 | 67.74 | 78.61 | 82.85 | 83.19 | 74.85 | 62.58 | 49.07 | 41.59 | 64.53 | |||||||||||||
YRS | 54 | 55 | 55 | 53 | 55 | 55 | 57 | 57 | 56 | 56 | 55 | 57 | 42 |