YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1935 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1936 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1937 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1938 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1939 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1940 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1941 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1942 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1943 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1944 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1945 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1946 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1947 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1948 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1949 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1950 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1951 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1952 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1953 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1954 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1955 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1956 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
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 | 79.16 | 87.53 | 88.26 | 87.94 | 84.87 | 70.00 | 58.97 | 49.32 | 75.76 | d | ||||||||
1960 | 43.74 | 45.72 | 61.42 | 73.48 | a | 79.90 | 87.50 | 84.10 | 85.32 | 81.33 | 70.23 | a | 60.27 | 42.32 | 67.95 | |||||||||||
1961 | 48.16 | 55.29 | 59.77 | 70.73 | 81.06 | 86.20 | 85.48 | 84.90 | 77.53 | 72.29 | 52.17 | 47.65 | 68.44 | |||||||||||||
1962 | 46.23 | 60.29 | 57.58 | 72.90 | 83.87 | 85.57 | 87.42 | 92.00 | 81.33 | 74.26 | 59.73 | 52.06 | 71.10 | |||||||||||||
1963 | 46.61 | 55.57 | 64.32 | 73.77 | 80.29 | 84.80 | 93.87 | 88.00 | 83.20 | 77.84 | 62.40 | 49.52 | 71.68 | |||||||||||||
1964 | 50.65 | 43.17 | 59.65 | 71.37 | 80.81 | 89.57 | 94.06 | 91.42 | 80.90 | 75.32 | 58.37 | 52.06 | 70.61 | |||||||||||||
1965 | 55.87 | 53.11 | 55.19 | 72.63 | 76.87 | 84.60 | 90.48 | 86.77 | 80.93 | 74.13 | 66.20 | 53.58 | 70.86 | |||||||||||||
1966 | 43.97 | 50.36 | 65.58 | 72.23 | 82.16 | 85.13 | 93.61 | 82.48 | 81.37 | 71.55 | 64.23 | 50.29 | 70.25 | |||||||||||||
1967 | 53.90 | 56.00 | 69.35 | 75.57 | 79.74 | 85.57 | 87.58 | 83.77 | 80.17 | 76.00 | 59.90 | 42.65 | 70.85 | |||||||||||||
1968 | 49.58 | 53.45 | 59.87 | 67.63 | 77.71 | 89.47 | 87.10 | 87.65 | 81.67 | 75.45 | 54.43 | 53.03 | 69.75 | |||||||||||||
1969 | 57.87 | a | 52.71 | 52.74 | 71.60 | 77.84 | 84.27 | 92.23 | 90.26 | 78.83 | 64.45 | 58.50 | 51.71 | 69.42 | ||||||||||||
1970 | 48.39 | 58.14 | 57.00 | 69.17 | 80.52 | 85.47 | 89.06 | 89.45 | 79.30 | 65.87 | 59.90 | 54.71 | 69.75 | |||||||||||||
1971 | 52.52 | 54.96 | 66.19 | 71.23 | 78.39 | 89.63 | 89.45 | 82.29 | 79.03 | 68.58 | 59.33 | 48.29 | 69.99 | |||||||||||||
1972 | 54.55 | 61.07 | 69.97 | 76.43 | 78.70 | a | 88.20 | 86.32 | 83.84 | 77.47 | 68.81 | 48.80 | 50.87 | 70.42 | ||||||||||||
1973 | 45.00 | 50.89 | 57.00 | 62.97 | 75.55 | 87.23 | 86.52 | 90.13 | 79.21 | a | 75.26 | 66.07 | 51.10 | 68.91 | ||||||||||||
1974 | 53.13 | 57.68 | 70.26 | 72.20 | 86.52 | 91.47 | 90.43 | a | 85.23 | 75.00 | 68.13 | 55.23 | 46.87 | 71.01 | ||||||||||||
1975 | 49.71 | 50.32 | 61.10 | 68.23 | 78.00 | a | 89.43 | 85.13 | 88.16 | 77.53 | 74.19 | 60.43 | 54.97 | 69.77 | ||||||||||||
1976 | 52.39 | 62.90 | 62.71 | 71.70 | 77.06 | 88.73 | 85.42 | 88.10 | 78.03 | 66.97 | 55.57 | 52.77 | 70.20 | |||||||||||||
1977 | 45.42 | 56.68 | 60.26 | 68.70 | 78.45 | 91.50 | 91.23 | 88.61 | 85.33 | 73.13 | 62.47 | 56.42 | 71.52 | |||||||||||||
1978 | 43.84 | 45.46 | 63.32 | 76.07 | 78.58 | 88.33 | 93.23 | 87.84 | 78.77 | 72.81 | 53.83 | 43.39 | 68.79 | |||||||||||||
1979 | 38.23 | 52.79 | 61.55 | 68.73 | 76.26 | 83.37 | 89.97 | a | 85.87 | 82.67 | 76.97 | 53.23 | 51.87 | 68.46 | ||||||||||||
1980 | 50.74 | 52.76 | 60.19 | 68.13 | 74.97 | 95.33 | 96.42 | 89.97 | 80.87 | 69.87 | 55.43 | 60.03 | 71.23 | |||||||||||||
1981 | 52.52 | 60.71 | 59.16 | 75.83 | a | 78.03 | 92.77 | 89.90 | 83.10 | 78.90 | 68.19 | 64.67 | 56.23 | 71.67 | ||||||||||||
1982 | 53.13 | 53.59 | a | 63.97 | 70.73 | 78.29 | 85.77 | 90.71 | 88.55 | 82.70 | 69.52 | 56.97 | a | 43.13 | a | 69.75 | ||||||||||
1983 | 47.81 | 51.30 | a | 59.84 | 64.90 | 77.06 | 87.13 | 92.39 | 92.42 | 87.47 | 71.84 | 61.23 | 42.35 | 69.64 | ||||||||||||
1984 | 46.29 | 58.76 | 64.46 | c | ----- | z | ----- | z | ----- | z | ----- | z | 84.68 | 80.70 | 65.19 | 55.40 | 47.68 | 62.90 | d | |||||||
1985 | 44.10 | 50.86 | 60.00 | 72.55 | a | 78.27 | a | 86.04 | d | 91.81 | j | 91.27 | a | 79.57 | b | 69.58 | 61.10 | 49.41 | b | 67.52 | a | |||||
1986 | 57.26 | 51.75 | 67.17 | a | 75.00 | 79.10 | a | 83.83 | 91.33 | a | 86.72 | b | 79.73 | 66.50 | a | 53.03 | 46.04 | c | 69.79 | |||||||
1987 | 44.17 | a | 51.00 | 57.74 | 69.63 | 76.03 | 85.00 | b | 90.77 | 86.77 | a | 79.67 | 75.43 | a | 58.13 | 47.58 | 68.49 | |||||||||
1988 | 45.29 | 56.76 | 62.19 | 71.07 | a | 78.03 | a | 84.85 | d | 85.53 | a | 84.60 | a | 78.00 | a | 73.77 | a | 61.67 | 48.84 | 69.22 | ||||||
1989 | 54.68 | 47.82 | 70.80 | a | 76.68 | b | 84.10 | 85.07 | 90.23 | 85.80 | a | 79.33 | 74.87 | 63.03 | a | 47.55 | 71.66 | |||||||||
1990 | 49.94 | 55.30 | a | 62.75 | g | 69.80 | 80.28 | b | 97.31 | a | 87.58 | 86.17 | b | 80.87 | 71.77 | 62.10 | 52.24 | b | 72.12 | a | ||||||
1991 | 44.42 | 59.27 | b | 62.87 | 74.00 | a | 82.90 | a | 88.55 | a | 84.28 | b | 82.96 | e | 73.63 | 71.71 | 52.83 | 47.71 | 68.76 | |||||||
1992 | 45.19 | 56.38 | 64.27 | a | 74.67 | c | 74.45 | 85.64 | b | 92.04 | d | 85.38 | b | 83.70 | 76.23 | a | 55.40 | 46.77 | a | 70.01 | ||||||
1993 | 47.29 | 52.77 | b | 63.43 | a | 72.50 | b | 79.66 | b | 88.41 | a | 90.61 | c | 87.43 | c | 80.60 | e | 70.50 | a | 55.17 | a | 53.63 | a | 70.17 | ||
1994 | 52.48 | 56.64 | 63.62 | b | 73.41 | c | 79.00 | i | 94.76 | a | 93.57 | a | 91.10 | 85.65 | d | 71.10 | 61.41 | a | 54.55 | 72.57 | a | |||||
1995 | 51.34 | b | 61.71 | 63.32 | c | 71.10 | a | 78.96 | c | 86.07 | a | 93.13 | a | 91.48 | b | 80.46 | d | 75.21 | b | ----- | z | 51.32 | 73.10 | a | ||
1996 | 52.94 | 57.14 | a | 62.70 | a | 75.61 | b | 89.68 | 89.74 | c | 88.40 | a | 85.41 | b | 77.48 | a | 68.66 | b | 59.86 | a | 57.07 | a | 72.06 | |||
1997 | 43.60 | a | 49.31 | b | 66.33 | a | 62.14 | a | 78.57 | c | 85.39 | b | 91.23 | e | 86.75 | c | 82.62 | a | 70.48 | b | 55.90 | 42.35 | 67.89 | |||
1998 | 50.13 | a | 52.46 | 58.87 | a | 67.69 | d | 84.62 | b | 92.71 | b | 93.41 | b | 86.27 | a | 87.52 | a | ----- | z | 60.27 | 51.57 | a | 71.41 | a | ||
1999 | 55.35 | 61.04 | a | 60.68 | 67.62 | a | 76.04 | c | 86.85 | d | 88.17 | b | 88.62 | e | 81.12 | d | 72.26 | d | 66.97 | 47.07 | a | 70.98 | ||||
2000 | 55.81 | 64.07 | a | 64.72 | b | 76.44 | c | 87.55 | b | 86.95 | k | 91.07 | b | 92.52 | 88.73 | d | 67.48 | 49.83 | a | 48.07 | b | 71.48 | a | |||
2001 | 41.50 | a | 54.86 | 59.00 | d | 74.78 | c | 80.10 | a | 90.86 | a | 93.90 | a | 87.72 | b | 84.11 | c | 73.21 | c | 59.83 | a | 51.41 | b | 70.94 | ||
2002 | 51.93 | d | 54.11 | a | 62.10 | 77.11 | b | 84.81 | d | 93.60 | e | 88.44 | f | 90.96 | e | 80.07 | 66.17 | a | 54.24 | a | 47.13 | 69.29 | a | |||
2003 | 54.53 | a | 52.70 | a | 64.62 | b | 74.07 | 83.44 | d | 84.67 | 94.92 | e | 90.29 | 81.66 | a | 74.12 | e | 59.48 | c | 53.45 | b | 72.33 | ||||
2004 | 53.34 | b | 48.90 | 64.13 | 66.39 | b | 83.25 | c | 88.31 | a | 87.17 | a | 82.52 | b | 79.14 | a | 67.94 | 50.63 | 50.80 | a | 68.54 | |||||
2005 | 55.04 | f | 50.92 | c | 56.77 | a | 68.64 | b | 75.90 | 89.83 | 92.56 | d | 85.94 | 82.45 | a | 68.81 | 62.93 | c | 52.21 | c | 71.54 | a | ||||
2006 | 58.30 | a | 56.00 | a | 63.03 | 76.57 | b | 85.29 | c | 90.14 | a | 90.46 | c | 83.69 | b | 74.72 | a | 70.32 | 63.62 | a | 48.48 | d | 71.72 | |||
2007 | 37.38 | b | 56.42 | b | 63.54 | e | 66.15 | d | 75.71 | c | 84.66 | a | 89.65 | h | 90.44 | d | 83.70 | g | 76.48 | 62.07 | a | 50.62 | b | 66.35 | b | |
2008 | 48.95 | k | 59.48 | 64.00 | b | 73.31 | a | 79.74 | 93.43 | 84.61 | 84.93 | a | 78.80 | 71.30 | a | 63.95 | k | 52.61 | c | 74.22 | b | |||||
2009 | 58.32 | 61.11 | 64.71 | 69.86 | b | 80.95 | k | 88.73 | 89.61 | 89.71 | 79.52 | a | 70.00 | c | 63.33 | f | 43.35 | 71.49 | b | |||||||
2010 | 48.65 | 45.14 | 59.74 | 69.67 | 77.58 | 91.48 | a | 87.84 | 89.03 | 85.24 | e | 73.03 | a | 60.52 | a | 55.29 | 70.27 | |||||||||
2011 | 53.48 | 52.11 | 70.61 | 79.17 | 81.73 | a | 95.85 | c | 96.17 | a | 94.13 | 82.39 | b | 73.96 | c | 63.00 | 40.39 | c | 73.58 | |||||||
2012 | 54.48 | 52.85 | b | 71.32 | 77.00 | b | 81.42 | 93.79 | a | 91.79 | c | 91.16 | 81.86 | a | 72.87 | 66.29 | b | 55.84 | f | 75.89 | a | |||||
2013 | 47.84 | 52.82 | 63.48 | 71.25 | b | 81.75 | g | 92.32 | b | 88.52 | 90.39 | 81.43 | 70.90 | a | 54.80 | 49.13 | 69.35 | a | ||||||||
2014 | 53.74 | 55.75 | 63.16 | 73.07 | a | 80.37 | a | 90.45 | a | 88.27 | e | 86.35 | 78.00 | 75.00 | 56.93 | 51.23 | 71.03 | |||||||||
2015 | 43.90 | 53.82 | 62.03 | b | 72.38 | a | 72.85 | e | 86.24 | a | 89.52 | 89.00 | b | 86.66 | a | 70.10 | 58.81 | d | 51.26 | 69.71 | ||||||
2016 | 48.74 | 59.97 | 66.68 | 71.40 | 77.94 | 89.50 | 97.57 | c | 86.77 | 82.93 | 78.72 | f | 63.19 | d | 51.40 | a | 72.37 | a | ||||||||
2017 | 51.16 | 62.64 | c | 71.97 | 72.30 | 77.17 | h | 92.56 | c | 91.48 | 83.83 | a | 82.93 | c | 71.23 | 65.70 | 54.48 | 72.75 | a | |||||||
2018 | 53.65 | 59.32 | 68.29 | 73.73 | 87.00 | 95.48 | c | 91.11 | c | 88.53 | a | 82.03 | 66.47 | a | 54.07 | b | 48.60 | a | 72.36 | |||||||
2019 | 51.07 | a | 56.82 | 59.41 | b | 73.79 | a | 78.14 | b | 90.00 | b | 93.35 | 93.97 | 87.22 | c | 66.71 | 58.57 | 53.13 | 71.85 | |||||||
2020 | 50.97 | 52.59 | 64.94 | 73.30 | 86.52 | 93.77 | 94.07 | b | 94.61 | 81.60 | 73.16 | 62.13 | 53.23 | a | 73.41 | |||||||||||
2021 | 48.39 | 52.26 | a | 63.68 | 70.45 | a | 79.67 | a | 89.40 | 86.30 | d | 87.07 | a | 86.66 | a | 74.61 | 65.50 | 60.65 | 72.05 | |||||||
2022 | 52.94 | 50.57 | 64.26 | 76.43 | b | 86.93 | b | 91.30 | 95.97 | 87.55 | 84.47 | 67.83 | b | 56.23 | d | 51.35 | 72.15 | |||||||||
2023 | 49.93 | a | 55.00 | 62.43 | c | 73.60 | 79.97 | 87.47 | 94.97 | 93.48 | 85.23 | 71.66 | b | 61.00 | 54.48 | 72.44 | ||||||||||
2024 | 46.16 | 57.21 | a | 63.13 | a | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 55.50 | i | |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 49.76 | 54.64 | 62.94 | 71.92 | 80.04 | 88.87 | 90.36 | 87.85 | 81.30 | 71.40 | 59.03 | 50.33 | 70.49 | |||||||||||||
S.D. | 4.76 | 4.53 | 4.00 | 3.52 | 3.61 | 3.47 | 3.31 | 3.11 | 3.19 | 3.27 | 4.38 | 4.27 | 1.40 | |||||||||||||
SKEW | -0.35 | -0.16 | 0.18 | -0.52 | 0.66 | 0.47 | 0.01 | 0.20 | 0.19 | -0.13 | -0.25 | -0.18 | 0.09 | |||||||||||||
MAX | 58.32 | 64.07 | 71.97 | 79.17 | 89.68 | 97.31 | 97.57 | 94.61 | 88.73 | 77.84 | 66.97 | 60.65 | 73.58 | |||||||||||||
MIN | 37.38 | 43.17 | 52.74 | 62.14 | 72.85 | 83.37 | 84.10 | 82.29 | 73.63 | 64.45 | 48.80 | 40.39 | 67.89 | |||||||||||||
YRS | 63 | 65 | 64 | 63 | 60 | 63 | 61 | 65 | 64 | 63 | 62 | 64 | 48 |