YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1940 | ----- | z | ----- | z | ----- | z | ----- | z | 84.10 | 92.23 | 94.29 | 95.42 | ----- | z | ----- | z | 57.60 | 53.66 | 79.55 | f | ||||||
1941 | 51.89 | 58.82 | 60.66 | 64.48 | 78.56 | 84.43 | 92.88 | a | 88.69 | 80.10 | 68.18 | 60.23 | 52.45 | 70.12 | ||||||||||||
1942 | 52.62 | a | 52.75 | 60.13 | 69.52 | 77.29 | ----- | z | 97.67 | a | 93.02 | 85.22 | 74.02 | 63.07 | 55.53 | 70.98 | a | |||||||||
1943 | 53.29 | 59.59 | 64.81 | 74.25 | 83.65 | 87.15 | 95.84 | 93.06 | 88.88 | 75.24 | 60.63 | 54.00 | 74.20 | |||||||||||||
1944 | 51.48 | 52.12 | 59.48 | 66.90 | 78.68 | 83.42 | 93.42 | 93.82 | 87.72 | 75.32 | 58.57 | 53.66 | 71.22 | |||||||||||||
1945 | 52.53 | 56.57 | 57.66 | 68.62 | 79.19 | 86.65 | 95.03 | 92.27 | 87.18 | 75.06 | 59.70 | 50.18 | 71.72 | |||||||||||||
1946 | 51.45 | 54.64 | 62.03 | 75.38 | 79.68 | 90.13 | 94.05 | 94.05 | 86.95 | 68.24 | 56.08 | 55.40 | 72.34 | |||||||||||||
1947 | 50.58 | 60.32 | 65.74 | 72.12 | 83.81 | 87.90 | 95.94 | 91.42 | 90.65 | 74.35 | 56.80 | 50.44 | 73.34 | |||||||||||||
1948 | 53.00 | 53.48 | 57.50 | 71.68 | 79.05 | 87.77 | 94.53 | 93.94 | 87.30 | 74.52 | 56.31 | c | 48.87 | 71.50 | ||||||||||||
1949 | 40.31 | 49.57 | 60.34 | 72.67 | 77.10 | 88.73 | 95.73 | 91.65 | 89.87 | 70.65 | 65.68 | 50.29 | 71.05 | |||||||||||||
1950 | 47.84 | 58.80 | 63.77 | 74.62 | 79.08 | 87.57 | 93.56 | 93.85 | 84.22 | 78.10 | 64.25 | 58.03 | 73.64 | |||||||||||||
1951 | 51.26 | 55.32 | 61.87 | 69.95 | 79.00 | 87.48 | 96.24 | 90.31 | 87.05 | 72.19 | 58.08 | 48.58 | 71.44 | |||||||||||||
1952 | 48.69 | 54.97 | 55.97 | 70.07 | 82.24 | 86.07 | 93.03 | 95.85 | 87.37 | 78.27 | 56.75 | 51.60 | 71.74 | |||||||||||||
1953 | 57.37 | 55.09 | 63.35 | 69.32 | 72.42 | 87.17 | 95.90 | 92.27 | 87.83 | 73.18 | 61.95 | 51.56 | 72.29 | |||||||||||||
1954 | 51.63 | 63.14 | 58.79 | 74.82 | 82.69 | 86.95 | 95.97 | 91.31 | 88.30 | 76.05 | 64.22 | 52.23 | 73.84 | |||||||||||||
1955 | 47.98 | 51.45 | 62.03 | 66.90 | 76.50 | 87.22 | 91.77 | 90.68 | 87.00 | 77.53 | 60.93 | 55.31 | 71.28 | |||||||||||||
1956 | 55.74 | 51.69 | 62.97 | 70.00 | 80.79 | 90.25 | 93.45 | 91.89 | 90.40 | 72.47 | 58.88 | 54.35 | 72.74 | |||||||||||||
1957 | 51.37 | 62.11 | 63.65 | 69.93 | 76.16 | 92.10 | 95.98 | 90.60 | 86.43 | 70.31 | 56.10 | 54.06 | 72.40 | |||||||||||||
1958 | 53.76 | 58.75 | 57.26 | 68.45 | 84.05 | 89.67 | 94.76 | 96.10 | 87.52 | 77.24 | 60.82 | 57.15 | 73.79 | |||||||||||||
1959 | 53.55 | 54.48 | 64.90 | 75.32 | 79.32 | 93.27 | 98.87 | 91.82 | 84.42 | 74.76 | 61.23 | 53.68 | 73.80 | |||||||||||||
1960 | 47.65 | 51.95 | 65.45 | 72.22 | 79.66 | 93.83 | 96.89 | 94.84 | 88.15 | 73.50 | 60.23 | 52.24 | 73.05 | |||||||||||||
1961 | 54.29 | 58.34 | 62.48 | 71.92 | 78.45 | 93.88 | 97.15 | 93.37 | 83.03 | 72.02 | 57.82 | 50.77 | 72.79 | |||||||||||||
1962 | 52.48 | 56.89 | 58.16 | 77.23 | 76.87 | 88.28 | 95.47 | 96.18 | 89.13 | 75.24 | 64.78 | 55.34 | 73.84 | |||||||||||||
1963 | 49.52 | 62.66 | 62.31 | 66.62 | 82.40 | 85.70 | 96.61 | 93.85 | 87.97 | 76.65 | 62.30 | 52.61 | 73.27 | |||||||||||||
1964 | 49.42 | 52.66 | 59.65 | 68.15 | 77.31 | 87.37 | 95.90 | 93.48 | 85.88 | 79.69 | 57.57 | 53.29 | 71.70 | |||||||||||||
1965 | 54.47 | 56.98 | 59.89 | 67.10 | 75.84 | 83.10 | 94.45 | 93.90 | 81.62 | 76.60 | 62.07 | 51.73 | 71.48 | |||||||||||||
1966 | 49.06 | 52.23 | 64.21 | 73.68 | 83.65 | 89.70 | 95.35 | 96.23 | 88.73 | 73.31 | 62.33 | 53.74 | 73.52 | |||||||||||||
1967 | 53.23 | 58.54 | 65.10 | 63.02 | 79.52 | 86.92 | 97.13 | 96.53 | 87.00 | 77.45 | 64.45 | 49.31 | 73.18 | |||||||||||||
1968 | 53.32 | 62.95 | 65.21 | 69.75 | 81.00 | 90.83 | 94.34 | 90.42 | 87.20 | 74.81 | 62.30 | 48.13 | 73.35 | |||||||||||||
1969 | 55.89 | 54.70 | 60.79 | 71.95 | 83.00 | 87.45 | 96.16 | 98.42 | 88.32 | 71.37 | 62.87 | 55.08 | 73.83 | |||||||||||||
1970 | 51.87 | 60.52 | 62.05 | 65.68 | 81.58 | 90.30 | 97.27 | 95.15 | 84.47 | 71.39 | 62.25 | 50.89 | 72.78 | |||||||||||||
1971 | 53.02 | 57.68 | 64.10 | 69.47 | 74.68 | 88.80 | 98.16 | 92.05 | 85.58 | 68.74 | 58.95 | 49.16 | 71.70 | |||||||||||||
1972 | 49.87 | 59.91 | 71.63 | 72.30 | 80.97 | 90.60 | 98.23 | 92.53 | 84.98 | 69.84 | 56.82 | 49.27 | 73.08 | |||||||||||||
1973 | 48.73 | 55.46 | 56.23 | 68.03 | 82.39 | 90.92 | 96.34 | 92.35 | 85.12 | 74.27 | 59.97 | 54.56 | 72.03 | |||||||||||||
1974 | 49.45 | 56.43 | 65.16 | 70.28 | 81.65 | 94.07 | 94.03 | 92.94 | 89.00 | 74.92 | 61.40 | 49.92 | 73.27 | |||||||||||||
1975 | 51.53 | 54.64 | 59.42 | 63.53 | 77.58 | 88.53 | 96.45 | 93.66 | 87.62 | 72.73 | 60.13 | 55.06 | 71.74 | |||||||||||||
1976 | 54.76 | 59.33 | 60.71 | 67.53 | 82.39 | 88.62 | 95.19 | 91.45 | 82.40 | 71.89 | 62.00 | 52.31 | 72.38 | |||||||||||||
1977 | 52.18 | 60.41 | 58.60 | 73.25 | 73.45 | 92.23 | 96.48 | 94.16 | 86.33 | 77.92 | s | 63.85 | 57.35 | 73.48 | a | |||||||||||
1978 | 53.24 | 57.77 | 64.70 | a | 68.55 | 79.24 | 91.70 | 96.58 | 93.58 | 85.62 | 78.61 | 59.50 | 47.92 | 73.08 | ||||||||||||
1979 | 46.52 | 53.75 | 61.21 | 70.20 | 80.16 | c | 89.18 | 94.84 | 90.82 | 91.07 | 77.42 | 60.23 | b | 55.48 | c | 72.57 | ||||||||||
1980 | 55.82 | a | 60.05 | 60.53 | 69.92 | 74.42 | 88.26 | a | 96.97 | a | 94.26 | f | 87.38 | 75.05 | b | 63.43 | 59.82 | 71.97 | a | |||||||
1981 | 57.60 | 59.41 | 63.52 | 76.32 | 80.27 | e | 94.05 | 97.71 | 96.42 | 88.02 | 71.44 | 65.16 | a | 56.29 | c | 75.52 | ||||||||||
1982 | 52.22 | a | 59.20 | 61.92 | 70.45 | a | 79.16 | 87.10 | 93.55 | b | 93.12 | f | 85.31 | a | 70.32 | 58.95 | 51.38 | c | 69.96 | a | ||||||
1983 | 54.78 | a | 57.62 | 62.63 | 65.76 | a | 78.53 | a | 87.62 | 94.42 | 90.02 | b | 88.88 | 73.94 | 63.04 | c | 54.90 | b | 72.68 | |||||||
1984 | 55.26 | 58.36 | 65.31 | 70.73 | b | 86.15 | 89.10 | 94.08 | 92.48 | 88.72 | 70.32 | 59.78 | 51.31 | 73.47 | ||||||||||||
1985 | 52.03 | 55.77 | 62.00 | 74.80 | 81.81 | 91.98 | 97.10 | 95.02 | 79.97 | 73.92 | 58.65 | 54.87 | 73.16 | |||||||||||||
1986 | 58.85 | 61.29 | 68.34 | 72.37 | 81.69 | 92.43 | c | 93.04 | c | 95.90 | b | 80.89 | k | 71.08 | l | 63.20 | h | 52.89 | i | 77.99 | d | |||||
1987 | 50.52 | j | 58.10 | h | 60.29 | j | 73.85 | j | 80.09 | h | 91.20 | j | 92.10 | k | 94.33 | k | 86.38 | b | 78.07 | b | 60.97 | 49.74 | j | 75.14 | i | |
1988 | 52.08 | 59.14 | 64.87 | 69.60 | 79.61 | 90.43 | 97.87 | 91.53 | 85.00 | 80.61 | 62.85 | 53.82 | 73.95 | |||||||||||||
1989 | 51.73 | 57.89 | 69.73 | 78.15 | 81.76 | 90.45 | 98.02 | 93.10 | 87.32 | 74.56 | 64.90 | 54.26 | 75.15 | |||||||||||||
1990 | 52.40 | 55.88 | 66.69 | 73.82 | 79.15 | 91.52 | 95.60 | 92.32 | 87.87 | 75.77 | 63.12 | 48.71 | 73.57 | |||||||||||||
1991 | 51.76 | 62.70 | 58.10 | 69.07 | 77.26 | 86.50 | 95.02 | 94.44 | 87.63 | 78.55 | 62.52 | 53.16 | 73.06 | |||||||||||||
1992 | 52.94 | 60.10 | 62.79 | 74.38 | 82.58 | 89.05 | 94.31 | 95.13 | 89.37 | 77.24 | 58.83 | 49.19 | 73.83 | |||||||||||||
1993 | 52.26 | 56.00 | 65.10 | 72.80 | 82.34 | 88.23 | 93.31 | 93.77 | 86.95 | 75.26 | 57.90 | 52.98 | 73.07 | |||||||||||||
1994 | 55.81 | 54.82 | 68.31 | 73.70 | 80.13 | 94.82 | 97.29 | 98.34 | 89.85 | 72.98 | 55.97 | 54.29 | 74.69 | |||||||||||||
1995 | 54.00 | 63.41 | 63.50 | 70.43 | 77.08 | 87.65 | 96.55 | 97.48 | 91.22 | 76.65 | 67.45 | 55.87 | 75.11 | |||||||||||||
1996 | 56.84 | 63.02 | 67.08 | 75.50 | 83.60 | 92.30 | 99.06 | 97.31 | 86.57 | 75.16 | 63.60 | a | 55.32 | 76.28 | ||||||||||||
1997 | 55.94 | 58.86 | 69.60 | 72.00 | 87.50 | 89.67 | 94.60 | 96.44 | 89.22 | 74.31 | 63.18 | 52.79 | 75.34 | |||||||||||||
1998 | 55.27 | 55.09 | 63.11 | 66.72 | 76.06 | 86.58 | 98.37 | 97.56 | 86.80 | 73.89 | 61.77 | 54.61 | 72.99 | |||||||||||||
1999 | 57.52 | 60.29 | 66.58 | 67.73 | 80.69 | 89.98 | 94.37 | 94.98 | 89.10 | 77.98 | 65.80 | 56.58 | 75.13 | |||||||||||||
2000 | 58.45 | a | 61.33 | 64.53 | 77.87 | 87.10 | 94.08 | 97.29 | 96.35 | 88.43 | 74.52 | 57.05 | 56.73 | 76.14 | ||||||||||||
2001 | 51.77 | 54.88 | 64.53 | 69.53 | 87.10 | 92.52 | b | 95.34 | 96.58 | 91.32 | 78.16 | 65.12 | 50.73 | 74.80 | ||||||||||||
2002 | 52.60 | 58.70 | 61.95 | 74.42 | 80.76 | 93.10 | 99.13 | 95.15 | 88.82 | 73.03 | 63.53 | 53.60 | 74.56 | |||||||||||||
2003 | 60.26 | 57.00 | 63.39 | 68.42 | 82.66 | 91.45 | 99.03 | 95.35 | 90.07 | 81.69 | 58.00 | 52.95 | 75.02 | |||||||||||||
2004 | 54.21 | 54.81 | 72.66 | 72.88 | 83.60 | 91.05 | 96.53 | 93.40 | 87.55 | 74.77 | 59.98 | 55.95 | 74.78 | |||||||||||||
2005 | 56.74 | 58.88 | 64.58 | 71.93 | 84.47 | 91.52 | 100.69 | 95.63 | 88.43 | 77.18 | 65.33 | 55.77 | 75.93 | |||||||||||||
2006 | 56.95 | 61.75 | 61.61 | 73.57 | 87.16 | 96.77 | 100.90 | 97.08 | 86.30 | 73.38 | c | 63.65 | 52.89 | 76.00 | ||||||||||||
2007 | 50.92 | 59.54 | 68.76 | 74.35 | 83.98 | 92.37 | 98.26 | 97.90 | 88.40 | 74.73 | 66.25 | 50.53 | 75.50 | |||||||||||||
2008 | 51.29 | 56.74 | 65.08 | 72.88 | 78.65 | 92.82 | 97.98 | 95.63 | 89.65 | 76.65 | 65.72 | 51.73 | 74.57 | |||||||||||||
2009 | 57.13 | 56.57 | 63.94 | 71.08 | 88.06 | 88.22 | 99.35 | 94.65 | 90.42 | 72.35 | 63.83 | 50.92 | 74.71 | |||||||||||||
2010 | 54.82 | 58.21 | 61.81 | 68.55 | 77.21 | 91.05 | 99.32 | 95.24 | 89.55 | 75.55 | 61.50 | 56.55 | 74.11 | |||||||||||||
2011 | 54.55 | 54.75 | 65.68 | 72.08 | 77.73 | 90.38 | 95.98 | 98.76 | 89.57 | 76.98 | 61.15 | 51.63 | 74.10 | |||||||||||||
2012 | 57.08 | 59.81 | 65.76 | 74.70 | 85.53 | 93.88 | 95.50 | 97.85 | 91.33 | 77.19 | 65.42 | 54.45 | 76.54 | |||||||||||||
2013 | 52.37 | 56.64 | 69.81 | 75.15 | 83.97 | 95.82 | 98.60 | 93.98 | 86.30 | 72.11 | 63.58 | 54.26 | 75.22 | |||||||||||||
2014 | 59.53 | 63.66 | 68.97 | 75.32 | 84.23 | 93.67 | 97.55 | 92.58 | 89.80 | 79.40 | 64.75 | 55.63 | 77.09 | |||||||||||||
2015 | 58.31 | 65.04 | 71.82 | 73.67 | 78.90 | 95.35 | 94.95 | 98.69 | 92.53 | 79.63 | 60.43 | 52.39 | 76.81 | |||||||||||||
2016 | 54.24 | 64.57 | 69.31 | 73.92 | 81.03 | 97.53 | a | 99.68 | 96.03 | 88.15 | 79.96 | q | 67.20 | 55.48 | 77.01 | a | ||||||||||
2017 | 55.40 | 63.25 | 71.32 | 76.15 | 82.53 | 97.02 | 100.68 | 98.08 | 88.20 | 78.48 | 68.88 | 58.60 | 78.22 | |||||||||||||
2018 | 60.44 | 59.75 | 66.92 | 79.17 | 85.15 | 95.40 | a | 100.50 | 100.18 | 94.43 | 76.35 | 64.12 | 55.39 | 78.15 | ||||||||||||
2019 | 55.34 | 53.70 | 65.11 | 76.28 | 77.18 | 92.33 | 98.81 | 98.92 | 88.27 | 73.55 | a | 63.70 | 53.23 | 74.70 | ||||||||||||
2020 | 55.45 | 58.00 | 63.18 | 73.30 | 85.60 | 91.13 | 99.06 | 100.47 | 91.57 | 77.79 | 62.68 | 54.53 | 76.06 | |||||||||||||
2021 | 55.96 | c | 59.80 | 63.11 | 77.00 | 83.87 | 96.62 | 99.55 | 97.00 | a | 90.72 | 73.14 | f | 67.78 | e | 55.35 | 76.98 | a | ||||||||
2022 | 55.90 | 59.21 | 67.10 | 75.80 | 83.40 | a | 94.53 | 98.11 | 95.40 | 91.58 | 77.24 | 58.03 | 53.90 | a | 75.85 | |||||||||||
2023 | 52.66 | 54.68 | 59.65 | 72.60 | 81.95 | 86.92 | 101.79 | 95.48 | 86.78 | 77.73 | 63.43 | 56.68 | 74.20 | |||||||||||||
2024 | 53.98 | 59.09 | 63.63 | 72.23 | f | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 58.90 | i | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 53.35 | 57.79 | 63.66 | 71.59 | 80.80 | 90.38 | 96.48 | 94.53 | 87.72 | 74.94 | 61.67 | 53.36 | 73.80 | |||||||||||||
S.D. | 3.32 | 3.40 | 3.70 | 3.50 | 3.39 | 3.22 | 2.17 | 2.54 | 2.56 | 2.92 | 3.08 | 2.60 | 1.70 | |||||||||||||
SKEW | -0.58 | -0.05 | 0.25 | -0.19 | -0.03 | 0.14 | 0.23 | 0.11 | -0.56 | -0.21 | -0.01 | -0.13 | 0.37 | |||||||||||||
MAX | 60.44 | 65.04 | 72.66 | 79.17 | 88.06 | 97.53 | 101.79 | 100.47 | 94.43 | 81.69 | 68.88 | 59.82 | 78.22 | |||||||||||||
MIN | 40.31 | 49.57 | 55.97 | 63.02 | 72.42 | 83.10 | 91.77 | 88.69 | 79.97 | 68.18 | 55.97 | 47.92 | 70.12 | |||||||||||||
YRS | 83 | 83 | 83 | 82 | 83 | 82 | 83 | 81 | 82 | 79 | 83 | 82 | 75 |