YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1936 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 63.40 | j | 55.31 | b | 55.31 | k |
1937 | 45.13 | 55.46 | 57.38 | b | 70.83 | 80.17 | a | 86.70 | 93.77 | 95.81 | 85.70 | 75.10 | 60.97 | 51.53 | a | 71.55 | ||||||||||
1938 | 52.38 | b | 55.04 | a | 65.19 | 74.46 | b | 80.00 | 86.20 | 91.35 | 94.77 | 83.40 | 75.32 | 61.50 | 55.52 | 72.93 | ||||||||||
1939 | 53.68 | 49.79 | 67.48 | 74.63 | 82.94 | 94.23 | 92.84 | 90.35 | 87.37 | 75.48 | 61.73 | 55.81 | 73.86 | |||||||||||||
1940 | 43.66 | b | 53.72 | 64.32 | 71.38 | a | 80.58 | 89.10 | 95.03 | 88.42 | 87.30 | 78.32 | 56.41 | a | 51.77 | a | 71.67 | |||||||||
1941 | 50.90 | b | 55.57 | 56.53 | a | 66.33 | 76.26 | 81.20 | 84.10 | 85.06 | 79.70 | c | 67.81 | e | 60.70 | 51.42 | 67.97 | |||||||||
1942 | 51.83 | b | 50.68 | 59.20 | a | 65.34 | a | 76.32 | 83.77 | 88.61 | 83.42 | 75.72 | a | 65.30 | a | 60.39 | b | 52.07 | a | 67.72 | ||||||
1943 | 50.24 | b | 59.92 | c | 60.33 | a | 73.03 | 76.13 | 86.23 | 88.74 | 89.32 | 81.00 | 76.00 | 61.38 | a | 41.90 | a | 70.35 | ||||||||
1944 | 48.16 | 53.72 | 61.03 | 66.40 | 78.32 | 88.50 | 92.03 | 91.39 | 83.40 | 73.68 | 60.33 | 46.43 | a | 70.28 | ||||||||||||
1945 | 50.16 | 59.00 | a | 64.19 | ----- | z | 82.87 | a | 87.80 | 93.20 | a | 91.42 | 86.93 | a | 74.35 | 64.80 | 53.19 | 73.45 | a | |||||||
1946 | 53.71 | 59.04 | 65.74 | 79.23 | 77.48 | 91.77 | 93.65 | 90.06 | 85.07 | a | 72.42 | 58.07 | b | 59.10 | a | 73.78 | ||||||||||
1947 | ----- | z | ----- | z | 60.97 | a | 69.65 | d | 78.84 | 89.50 | 95.19 | 91.39 | 89.07 | 77.00 | 54.97 | a | 51.23 | 75.78 | b | |||||||
1948 | 46.68 | 50.14 | 54.90 | a | 75.70 | 81.23 | 89.27 | 94.19 | 92.97 | 88.55 | a | 74.45 | 59.53 | 56.37 | a | 72.00 | ||||||||||
1949 | 40.81 | 52.50 | 63.42 | 67.63 | 78.87 | 86.00 | 90.58 | 89.90 | 83.67 | 72.61 | 70.00 | 52.81 | 70.73 | |||||||||||||
1950 | 58.19 | 62.68 | 65.48 | 74.48 | c | 80.32 | 91.03 | 88.29 | 90.00 | 79.63 | 83.26 | 65.97 | a | 58.42 | 74.81 | |||||||||||
1951 | 50.97 | a | 58.56 | a | 60.67 | a | 68.87 | 79.83 | a | 87.60 | 95.61 | 92.45 | 86.43 | 74.48 | 60.41 | a | 53.06 | 72.41 | ||||||||
1952 | 56.93 | a | 60.31 | 60.65 | 71.30 | 82.65 | 97.96 | e | 92.61 | 94.65 | 86.50 | 78.55 | 57.87 | 52.81 | 74.40 | |||||||||||
1953 | 63.87 | 57.00 | a | 68.00 | 74.00 | 79.45 | 97.80 | 94.39 | 91.23 | 90.03 | 75.00 | 64.83 | 52.80 | k | 77.78 | a | ||||||||||
1954 | 56.85 | d | 68.44 | a | 64.45 | 80.20 | 79.16 | 93.83 | 97.48 | 93.03 | 88.63 | 76.71 | 67.63 | 58.52 | 77.08 | |||||||||||
1955 | 52.81 | 56.68 | 67.42 | 73.37 | 80.65 | 89.07 | 90.68 | 91.52 | 87.63 | 79.42 | 65.10 | 60.06 | 74.53 | |||||||||||||
1956 | 59.00 | 55.90 | 70.29 | 75.20 | 87.97 | 95.10 | 93.29 | 92.42 | 91.60 | 78.97 | 63.48 | a | 59.47 | a | 76.89 | |||||||||||
1957 | 55.68 | 65.71 | 64.23 | 69.67 | 76.35 | 91.73 | 95.68 | 91.74 | 85.57 | 69.65 | 54.87 | 61.84 | 73.56 | |||||||||||||
1958 | 52.52 | 59.57 | 54.26 | 67.97 | 82.71 | 92.03 | 95.16 | 93.00 | 85.17 | 72.65 | 66.43 | 59.68 | 73.43 | |||||||||||||
1959 | 49.74 | 56.54 | 67.47 | a | 70.80 | 80.35 | 91.47 | 92.65 | 91.57 | a | 86.80 | 74.00 | 64.17 | 54.97 | 73.38 | |||||||||||
1960 | 49.57 | a | 52.07 | 65.74 | 76.40 | 81.48 | 90.97 | 88.45 | 91.80 | a | 86.80 | 75.32 | 64.33 | 47.77 | 72.56 | |||||||||||
1961 | 54.81 | 59.43 | 62.65 | 71.93 | 83.00 | 91.00 | 90.65 | 89.52 | 82.77 | 76.94 | 58.10 | a | 52.23 | 72.75 | ||||||||||||
1962 | 50.65 | 63.64 | 61.32 | 76.97 | 86.61 | 88.83 | 91.29 | 95.35 | 86.00 | 78.35 | 65.60 | 57.10 | 75.14 | |||||||||||||
1963 | 49.81 | 59.89 | 65.81 | 75.83 | 83.43 | a | 90.27 | 97.65 | 90.84 | 87.10 | 81.37 | a | 66.33 | 53.35 | 75.14 | |||||||||||
1964 | 54.94 | 47.90 | 62.45 | 73.10 | 83.77 | 92.23 | 97.17 | a | 93.97 | 84.23 | 80.42 | 63.00 | 56.29 | 74.12 | ||||||||||||
1965 | 58.90 | 58.32 | 58.37 | a | 75.40 | 80.29 | 87.80 | 93.97 | 90.48 | 82.66 | a | 77.13 | 68.70 | 57.32 | 74.11 | |||||||||||
1966 | 49.03 | 54.14 | 67.97 | 75.21 | a | 84.55 | 87.67 | 97.48 | 87.84 | 88.57 | 76.03 | 68.63 | 53.16 | 74.19 | ||||||||||||
1967 | 57.71 | 60.07 | 72.00 | a | 76.87 | 80.80 | a | 87.52 | a | 92.71 | 88.52 | 82.47 | 80.13 | 64.27 | 48.58 | 74.30 | ||||||||||
1968 | 55.77 | 58.10 | 60.16 | 67.00 | 76.87 | 91.23 | 89.32 | 87.58 | 82.50 | 76.00 | 58.10 | 53.13 | 71.31 | |||||||||||||
1969 | 58.03 | 54.68 | 51.42 | 71.30 | 80.03 | 83.93 | 94.35 | 93.06 | 82.87 | 66.55 | 61.33 | 55.10 | 71.06 | |||||||||||||
1970 | 51.26 | 58.96 | 57.10 | 67.70 | 81.39 | 86.80 | 91.84 | 93.13 | 81.86 | b | 67.90 | 61.23 | 58.32 | 71.46 | ||||||||||||
1971 | 53.29 | 55.11 | 64.10 | 70.73 | 79.26 | 92.53 | 90.23 | 85.90 | 80.07 | 72.10 | a | 62.37 | 49.84 | 71.29 | ||||||||||||
1972 | 55.65 | 61.00 | 70.68 | 75.57 | 79.61 | 90.47 | 89.19 | 87.00 | 81.03 | 70.67 | a | 49.93 | 50.81 | 71.80 | ||||||||||||
1973 | 46.29 | 51.39 | 58.32 | 62.93 | 76.61 | 88.03 | 90.35 | 92.52 | 82.20 | 76.90 | 66.43 | 54.32 | 70.53 | |||||||||||||
1974 | 49.77 | 58.14 | 71.29 | 74.70 | 89.39 | 93.30 | 94.07 | a | 88.84 | 79.33 | 73.81 | 62.23 | 52.06 | 73.91 | ||||||||||||
1975 | 54.00 | 54.14 | 65.03 | 71.00 | 80.81 | 90.97 | 89.39 | 93.06 | 82.27 | 78.97 | 65.13 | 59.10 | 73.66 | |||||||||||||
1976 | 57.26 | 65.38 | 65.87 | 74.60 | 79.32 | 91.23 | 90.23 | 91.42 | 84.17 | 70.45 | 60.17 | 57.94 | 74.00 | |||||||||||||
1977 | 50.03 | 61.00 | 64.03 | 72.83 | 82.06 | 94.40 | 94.48 | 92.58 | 88.53 | 79.52 | 67.30 | 60.74 | 75.63 | |||||||||||||
1978 | 49.45 | 53.25 | 66.65 | 78.60 | 82.23 | 90.97 | 96.00 | 92.29 | 83.93 | 79.46 | c | 61.70 | j | 53.10 | k | 77.28 | b | |||||||||
1979 | 45.45 | i | 58.25 | h | 65.06 | 72.20 | 79.97 | 88.07 | 94.26 | 90.00 | 87.73 | 81.45 | 56.76 | a | 59.52 | 77.50 | b | |||||||||
1980 | 54.61 | 58.46 | a | 65.07 | c | 71.43 | 77.94 | 96.73 | 99.70 | a | 93.42 | 85.63 | 73.23 | 60.13 | 60.45 | 74.73 | ||||||||||
1981 | 57.61 | 62.35 | b | 60.45 | 76.20 | 78.68 | 93.97 | 93.90 | 87.61 | 82.23 | 71.74 | 66.90 | 57.10 | 74.06 | ||||||||||||
1982 | 53.00 | 52.96 | 64.71 | 70.57 | 76.90 | 85.03 | 91.00 | a | 90.87 | 84.17 | a | 70.00 | 56.60 | 48.16 | 70.33 | |||||||||||
1983 | 51.00 | a | 50.29 | 60.10 | 65.20 | 75.84 | 84.47 | 94.71 | 93.58 | 88.80 | 74.19 | 65.38 | i | 43.75 | k | 73.82 | b | |||||||||
1984 | 49.00 | j | 59.57 | f | 62.41 | d | 68.57 | 82.03 | 87.53 | 93.71 | 90.26 | 83.50 | 66.74 | 62.00 | 51.06 | 74.78 | b | |||||||||
1985 | 47.97 | a | 51.46 | 63.90 | 74.43 | 80.94 | 88.33 | 95.13 | 93.65 | 83.27 | 71.55 | 62.48 | i | 53.42 | 73.09 | a | ||||||||||
1986 | 61.94 | 58.29 | 71.24 | b | 75.70 | 80.70 | a | 86.57 | 93.77 | 92.58 | 84.00 | 69.94 | 58.27 | 49.61 | 73.55 | |||||||||||
1987 | 51.47 | a | 57.36 | 59.61 | 74.00 | 78.74 | 88.93 | 94.90 | 89.90 | 83.70 | 76.97 | 60.87 | 48.71 | 72.10 | ||||||||||||
1988 | 49.29 | 59.72 | 65.84 | 71.10 | 80.39 | 89.40 | 91.52 | 90.32 | 81.70 | 77.90 | a | 66.70 | 52.55 | 73.04 | ||||||||||||
1989 | 55.74 | 51.67 | a | 72.13 | 77.90 | 84.97 | 87.30 | 93.94 | 90.65 | 82.90 | 77.45 | 68.83 | 51.06 | 74.54 | ||||||||||||
1990 | 53.03 | 56.07 | 61.58 | 71.80 | 78.97 | 98.77 | 91.55 | 88.87 | 84.53 | 75.48 | 67.83 | 48.84 | 73.11 | |||||||||||||
1991 | 50.39 | 65.32 | 67.16 | 74.20 | 83.65 | 90.80 | 88.26 | 89.65 | 79.83 | 76.39 | 56.11 | b | 50.77 | 72.71 | ||||||||||||
1992 | 51.03 | 60.86 | 68.61 | 76.69 | a | 79.26 | 88.14 | a | 94.29 | 90.26 | 87.27 | 78.97 | 57.69 | a | 50.87 | 73.66 | ||||||||||
1993 | 51.10 | a | 54.29 | 66.67 | a | 72.60 | 81.71 | 90.20 | 94.29 | 90.81 | 85.80 | 76.00 | 57.70 | 57.19 | 73.20 | |||||||||||
1994 | 56.80 | a | 56.82 | 64.00 | 71.83 | 78.58 | 96.50 | 96.77 | 96.13 | 87.53 | 75.16 | 62.33 | 59.10 | 75.13 | ||||||||||||
1995 | 52.13 | 65.63 | a | 65.50 | a | 68.47 | 79.00 | 88.53 | 95.16 | 95.06 | 84.13 | 78.26 | 68.13 | 55.57 | a | 74.63 | ||||||||||
1996 | 57.03 | 62.64 | a | 62.90 | 74.90 | 89.93 | a | 93.30 | 92.16 | 90.13 | 81.50 | 73.00 | 63.77 | 56.43 | a | 74.81 | ||||||||||
1997 | 48.90 | a | 51.75 | 71.50 | a | 64.30 | 79.10 | 88.00 | 95.07 | a | 91.42 | 87.37 | 75.41 | b | 60.57 | 46.14 | c | 71.63 | ||||||||
1998 | 57.52 | 56.39 | 62.53 | a | 69.24 | a | 89.71 | 96.63 | 96.55 | 91.13 | 91.73 | 74.90 | 65.77 | 57.65 | 75.81 | |||||||||||
1999 | 58.03 | 65.44 | a | 65.39 | 71.39 | b | 78.35 | 89.27 | 94.84 | 92.06 | 82.77 | 75.84 | 72.45 | a | 53.97 | a | 74.98 | |||||||||
2000 | 59.45 | 65.41 | 66.77 | a | 75.53 | 88.26 | 89.87 | 96.26 | 96.87 | 91.27 | 72.13 | a | 54.83 | a | 52.29 | 75.74 | ||||||||||
2001 | 46.26 | 57.86 | 60.73 | a | 77.03 | 82.35 | 93.50 | 98.84 | 93.26 | 89.13 | 77.42 | 65.57 | 56.00 | 74.83 | ||||||||||||
2002 | 54.71 | 57.29 | 64.48 | 77.76 | a | 85.19 | 96.47 | 93.77 | 95.55 | 83.67 | 70.00 | 59.83 | 51.68 | 74.20 | ||||||||||||
2003 | 57.77 | 54.71 | 66.35 | 76.63 | 84.84 | 87.87 | 98.55 | 95.26 | 85.50 | 78.00 | 63.60 | 57.32 | 75.53 | |||||||||||||
2004 | 54.94 | 51.83 | 67.29 | 69.10 | 85.55 | 92.33 | 91.81 | 88.10 | 83.27 | 72.48 | 55.47 | 53.94 | 72.17 | |||||||||||||
2005 | 55.26 | 55.39 | 60.65 | 71.67 | 77.06 | 91.90 | 95.35 | 89.48 | b | 86.70 | 74.16 | 66.87 | 54.90 | 73.28 | ||||||||||||
2006 | 61.03 | 60.32 | 64.48 | ----- | z | 87.06 | 95.93 | 96.26 | 88.71 | 80.13 | 73.16 | 65.52 | a | 51.94 | 74.96 | a | ||||||||||
2007 | 44.52 | 58.36 | 69.87 | 71.75 | b | 79.84 | 91.07 | 95.19 | 96.29 | 87.87 | 79.42 | 66.10 | 51.65 | 74.33 | ||||||||||||
2008 | 52.61 | 61.21 | 65.93 | a | 73.80 | 81.42 | 94.27 | 90.61 | 90.58 | 84.67 | 75.87 | 65.40 | 53.50 | a | 74.16 | |||||||||||
2009 | 58.84 | 64.43 | 68.29 | 72.60 | 83.80 | a | 91.07 | 95.45 | 93.45 | 83.60 | 69.90 | 67.33 | 46.23 | a | 74.58 | |||||||||||
2010 | 51.71 | 45.07 | 61.26 | 73.30 | 81.39 | h | 94.79 | f | 94.54 | c | 93.97 | 91.47 | 77.13 | 64.23 | 57.07 | a | 70.97 | b | ||||||||
2011 | 56.00 | 53.00 | 69.77 | 78.90 | 80.77 | 97.30 | 100.58 | 98.55 | 85.67 | 75.23 | 63.20 | 42.39 | 75.11 | |||||||||||||
2012 | 58.68 | 56.00 | 71.10 | 78.20 | 84.42 | 94.97 | 96.42 | 95.10 | 85.38 | d | 75.97 | ----- | z | 55.55 | 77.43 | a | ||||||||||
2013 | 49.87 | ----- | z | 66.34 | b | 70.47 | 82.31 | b | 96.68 | e | 90.61 | 93.65 | 84.43 | 72.45 | 59.90 | 50.57 | a | 74.30 | a | |||||||
2014 | 55.29 | 56.07 | 65.26 | 73.17 | 79.90 | 92.40 | 92.81 | 91.29 | 82.17 | a | 78.61 | 58.97 | 53.07 | a | 73.25 | |||||||||||
2015 | 48.53 | a | 55.96 | 64.03 | 74.17 | 75.61 | 90.10 | 93.97 | 91.32 | 89.43 | 72.83 | a | 61.90 | 53.83 | a | 72.64 | ||||||||||
2016 | 51.97 | 62.00 | 68.48 | 71.79 | a | 77.15 | e | 92.50 | 100.03 | 89.71 | 85.60 | 81.77 | 66.41 | a | 52.43 | a | 74.99 | |||||||||
2017 | 50.48 | 63.44 | a | 73.03 | 71.53 | 79.57 | a | 92.57 | 96.16 | 87.93 | a | 83.46 | b | 74.03 | 68.60 | 57.07 | a | 74.82 | ||||||||
2018 | 53.65 | 59.54 | 67.10 | 72.17 | 87.65 | 94.97 | 95.77 | 92.73 | a | 85.70 | 68.27 | a | 57.90 | 51.55 | 73.91 | |||||||||||
2019 | 50.32 | 56.61 | 61.26 | 72.20 | 76.72 | b | 89.70 | 96.55 | 97.43 | c | 90.87 | 68.90 | a | 61.07 | a | 54.58 | 73.02 | |||||||||
2020 | 54.26 | d | 53.90 | 65.71 | 73.43 | 87.00 | 95.03 | 96.50 | a | 96.34 | b | 84.60 | 77.77 | e | 66.97 | 54.39 | 75.49 | |||||||||
2021 | 50.93 | a | 49.96 | a | 63.47 | a | 72.20 | 79.58 | 91.79 | a | 89.90 | b | 91.83 | a | 91.57 | 77.63 | a | 67.93 | a | 64.50 | a | 74.27 | ||||
2022 | 53.65 | 53.77 | f | 66.03 | a | 77.55 | a | 86.87 | 90.77 | 97.61 | 87.87 | 89.03 | a | 73.39 | 59.70 | 53.89 | c | 76.03 | a | |||||||
2023 | 54.61 | 57.14 | 63.61 | 73.63 | 81.77 | a | 89.31 | a | 96.58 | 95.86 | b | 90.07 | a | 76.97 | a | 63.07 | b | 55.59 | b | 74.85 | ||||||
2024 | 48.42 | 59.18 | a | 62.32 | 74.71 | m | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 56.64 | i | ||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 52.97 | 57.29 | 64.37 | 72.71 | 81.17 | 90.78 | 93.72 | 91.62 | 85.17 | 74.97 | 62.58 | 53.94 | 73.43 | |||||||||||||
S.D. | 4.29 | 4.64 | 4.21 | 3.60 | 3.44 | 3.60 | 3.03 | 2.83 | 3.27 | 3.74 | 4.28 | 4.15 | 1.81 | |||||||||||||
SKEW | -0.09 | 0.04 | -0.38 | -0.38 | 0.69 | 0.08 | -0.31 | -0.08 | -0.01 | -0.38 | -0.28 | -0.30 | -0.83 | |||||||||||||
MAX | 63.87 | 68.44 | 73.03 | 80.20 | 89.93 | 98.77 | 100.58 | 98.55 | 91.73 | 83.26 | 72.45 | 64.50 | 77.08 | |||||||||||||
MIN | 40.81 | 45.07 | 51.42 | 62.93 | 75.61 | 81.20 | 84.10 | 83.42 | 75.72 | 65.30 | 49.93 | 41.90 | 67.72 | |||||||||||||
YRS | 85 | 83 | 88 | 85 | 86 | 86 | 87 | 87 | 87 | 87 | 83 | 85 | 74 |