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 | ----- | 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 | 90.97 | 93.61 | 83.67 | 76.87 | 65.80 | 58.45 | 78.23 | f | ||||||
1963 | 54.32 | 62.57 | 69.84 | 80.10 | 84.90 | 88.83 | 93.81 | 90.68 | 85.17 | 81.90 | 67.63 | 53.87 | 76.14 | |||||||||||||
1964 | 57.52 | 52.28 | 68.19 | 78.27 | 86.87 | 91.73 | 95.42 | 92.10 | 80.79 | a | 77.13 | 63.37 | 54.77 | 74.87 | ||||||||||||
1965 | 59.03 | 54.36 | 56.94 | 76.23 | 82.68 | 87.93 | 93.00 | 88.81 | 83.80 | 76.23 | 69.83 | 58.29 | 73.93 | |||||||||||||
1966 | 47.77 | 53.64 | 68.39 | 72.07 | 80.26 | 86.83 | 94.58 | 85.03 | 81.27 | 74.06 | 69.80 | 56.42 | 72.51 | |||||||||||||
1967 | 59.26 | 59.54 | 75.00 | 81.53 | 84.00 | 88.90 | 87.97 | 89.16 | 80.15 | d | 79.13 | 65.03 | ----- | z | 77.24 | a | ||||||||||
1968 | ----- | z | ----- | z | ----- | z | 71.17 | 80.77 | 89.93 | ----- | z | 84.00 | s | 82.03 | 76.84 | 60.37 | 57.35 | 74.07 | e | |||||||
1969 | 60.58 | 56.96 | 53.58 | 74.00 | 80.19 | 86.67 | 94.06 | 92.10 | 81.23 | 67.16 | 63.37 | 58.06 | 72.33 | |||||||||||||
1970 | 51.84 | 60.39 | 58.60 | a | 72.60 | 83.65 | 87.43 | 91.48 | 91.58 | 81.33 | 68.32 | 62.83 | 61.32 | 72.62 | ||||||||||||
1971 | 57.65 | 56.61 | 68.52 | 73.10 | ----- | z | 89.40 | 91.26 | 80.56 | d | 78.97 | 72.58 | 64.03 | 54.65 | 71.57 | a | ||||||||||
1972 | 58.65 | 61.62 | 72.35 | 78.90 | 79.35 | 88.50 | 86.58 | 83.97 | 81.47 | 73.33 | a | 53.33 | 53.55 | 72.63 | ||||||||||||
1973 | 46.32 | 52.86 | 62.03 | 66.72 | a | 80.77 | 90.54 | d | 91.95 | j | 91.77 | 83.87 | 79.77 | 70.08 | d | 59.68 | 71.31 | a | ||||||||
1974 | 55.61 | 63.07 | 74.71 | 78.57 | 89.57 | a | 93.11 | l | 91.97 | a | ----- | z | ----- | z | 71.00 | 61.47 | 52.06 | 70.89 | c | |||||||
1975 | 53.52 | 54.07 | a | 64.29 | 72.00 | 81.29 | 91.70 | 84.84 | 88.32 | 78.60 | 77.65 | 65.53 | 58.03 | 72.49 | ||||||||||||
1976 | 55.74 | 66.45 | 66.29 | 75.97 | 79.26 | 90.00 | 85.52 | 91.00 | 80.07 | 67.90 | 56.53 | 56.48 | 72.60 | |||||||||||||
1977 | 47.52 | 59.68 | 64.68 | 71.90 | 83.29 | 92.63 | 92.71 | 90.94 | ----- | z | ----- | z | 66.38 | a | 59.52 | 72.92 | b | |||||||||
1978 | 46.94 | 46.50 | 66.71 | 80.93 | 82.97 | 91.10 | 95.52 | 89.35 | 81.13 | 75.10 | 58.83 | 51.65 | 72.23 | |||||||||||||
1979 | 43.97 | 55.32 | 63.48 | 73.37 | 78.57 | a | 87.50 | 93.32 | 87.71 | 85.50 | 80.10 | 57.27 | 54.16 | 71.69 | ||||||||||||
1980 | 52.84 | 55.93 | 64.39 | 72.32 | b | 79.83 | a | 97.31 | a | 96.71 | 90.84 | 83.80 | 73.42 | 58.87 | ----- | z | 75.11 | a | ||||||||
1981 | 55.81 | 62.70 | a | 62.87 | a | 75.90 | 79.94 | 92.48 | a | 90.23 | 84.32 | 81.33 | 71.06 | 66.87 | 57.90 | 73.45 | ||||||||||
1982 | 51.55 | 52.82 | 66.29 | 71.97 | 80.26 | 86.87 | 91.48 | 90.97 | 85.53 | 73.32 | 58.73 | 47.77 | 71.46 | |||||||||||||
1983 | 47.06 | 53.43 | 64.39 | 67.10 | 80.90 | 86.60 | 93.90 | 93.23 | 87.77 | 73.52 | 63.03 | 43.39 | 71.19 | |||||||||||||
1984 | 49.94 | 60.03 | 63.55 | 71.73 | 83.77 | 86.97 | 90.42 | 86.68 | 80.90 | 67.32 | 59.73 | 53.55 | 71.22 | |||||||||||||
1985 | 47.65 | 52.46 | 65.10 | 76.63 | 83.45 | 85.37 | 91.29 | 92.87 | 82.23 | 70.93 | a | 65.27 | 52.87 | 72.18 | ||||||||||||
1986 | 60.16 | 58.25 | 68.90 | 77.57 | 81.87 | 84.70 | 91.74 | 88.52 | 81.90 | 68.81 | 58.87 | 49.42 | 72.56 | |||||||||||||
1987 | 50.39 | 55.71 | 60.68 | 72.63 | 79.77 | 86.00 | c | 91.45 | 88.77 | 80.73 | 75.87 | 63.17 | 51.10 | 71.36 | ||||||||||||
1988 | 47.87 | 58.62 | 66.68 | 72.50 | 80.52 | 87.70 | 86.35 | 86.81 | 83.53 | 76.84 | 67.67 | 54.03 | 72.43 | |||||||||||||
1989 | 57.61 | 52.93 | 70.94 | 78.53 | 86.55 | 85.97 | 91.32 | 86.94 | 80.40 | 78.81 | 66.60 | 49.13 | 73.81 | |||||||||||||
1990 | 55.90 | 60.93 | 61.45 | 72.83 | 80.87 | 99.00 | 87.45 | 88.26 | 84.03 | 75.52 | 65.37 | 54.03 | 73.80 | |||||||||||||
1991 | 47.42 | 62.39 | ----- | z | 76.90 | 87.81 | 91.30 | 88.13 | 90.35 | n | 76.30 | 75.52 | 56.00 | 51.81 | 71.36 | b | ||||||||||
1992 | 49.06 | 60.10 | 69.73 | a | 75.13 | 78.33 | a | 87.61 | b | 92.32 | 87.39 | 84.70 | 78.81 | 57.73 | 53.39 | 72.86 | ||||||||||
1993 | 50.16 | 54.93 | 65.52 | 73.67 | 81.45 | 90.30 | 91.48 | 90.81 | 83.10 | 71.65 | 58.77 | 58.13 | 72.50 | |||||||||||||
1994 | 55.58 | 58.36 | 66.74 | 74.27 | 79.48 | 95.67 | 93.58 | 90.16 | 85.43 | 75.26 | 63.43 | 59.52 | 74.79 | |||||||||||||
1995 | 53.65 | 62.75 | 63.94 | 73.00 | 80.23 | 89.50 | 93.68 | 90.10 | 80.00 | 76.32 | 66.10 | 56.55 | 73.82 | |||||||||||||
1996 | 56.84 | 62.17 | 63.52 | 75.63 | 90.19 | 90.57 | 89.65 | 86.47 | a | 79.93 | 73.87 | 63.93 | 58.35 | 74.26 | ||||||||||||
1997 | 48.97 | 51.11 | 70.13 | 66.17 | 78.84 | 87.90 | 91.23 | 88.52 | 85.97 | 72.48 | 59.07 | 48.23 | 70.72 | |||||||||||||
1998 | 58.63 | a | 56.29 | 56.75 | g | 72.23 | 89.45 | 96.50 | 97.35 | 88.87 | 89.97 | 76.45 | 65.77 | 56.29 | 77.07 | a | ||||||||||
1999 | 59.94 | 65.86 | 63.61 | 72.93 | 79.13 | 87.48 | a | 89.66 | b | 92.71 | 82.07 | 76.55 | 71.73 | 55.00 | 74.72 | |||||||||||
2000 | 60.26 | 67.79 | 68.35 | 76.43 | 89.03 | 86.13 | 93.77 | 94.39 | 90.67 | 72.77 | a | 54.60 | 49.29 | 75.29 | ||||||||||||
2001 | 47.52 | 59.61 | 58.42 | 78.10 | 84.42 | 94.13 | 98.61 | 92.94 | 84.77 | 76.81 | 65.03 | 56.26 | 74.72 | |||||||||||||
2002 | 56.81 | 56.71 | 63.97 | 76.67 | 86.00 | 94.07 | 92.26 | 94.35 | 85.97 | 69.68 | 59.27 | 53.10 | 74.07 | |||||||||||||
2003 | 58.90 | 55.93 | 68.65 | 79.30 | 85.71 | 87.17 | 95.19 | 94.65 | 83.87 | 79.00 | 63.86 | b | 59.59 | d | 75.98 | |||||||||||
2004 | 56.00 | 53.93 | 68.03 | a | 70.03 | a | 85.87 | 90.77 | 90.52 | 87.74 | 81.87 | 73.65 | 55.80 | 55.42 | 72.47 | |||||||||||
2005 | 57.03 | 56.64 | 63.93 | a | 74.20 | 79.93 | a | 92.07 | 92.58 | 88.23 | 89.57 | 74.65 | 69.22 | g | 57.40 | a | 75.11 | a | ||||||||
2006 | 62.87 | 61.50 | 66.90 | 81.03 | 88.58 | 94.53 | 95.93 | a | 90.10 | a | 79.50 | 73.58 | 67.33 | 53.92 | f | 78.35 | a | |||||||||
2007 | 44.90 | 59.57 | 68.94 | 71.00 | 77.71 | 86.93 | 89.90 | 92.19 | 85.50 | 80.42 | 65.90 | 56.00 | 73.25 | |||||||||||||
2008 | 55.16 | 62.90 | 68.16 | 76.33 | 83.48 | 95.50 | 89.19 | 89.94 | 81.13 | 75.19 | 67.87 | 57.52 | 75.20 | |||||||||||||
2009 | 59.84 | 66.07 | 69.81 | 75.83 | 84.45 | 93.67 | 92.29 | 93.13 | 83.57 | 71.84 | 68.50 | 49.65 | 75.72 | |||||||||||||
2010 | 53.29 | 49.46 | 64.29 | 74.63 | 81.52 | 96.30 | 88.13 | 93.48 | 89.50 | 77.74 | 65.60 | 59.90 | 74.49 | |||||||||||||
2011 | 56.65 | 56.96 | 74.29 | 82.33 | 84.77 | 99.67 | 98.87 | 99.90 | 86.00 | 76.61 | 64.10 | 44.23 | 77.03 | |||||||||||||
2012 | 59.39 | 56.07 | 72.06 | 81.53 | 84.87 | 93.47 | 93.06 | 92.48 | 84.43 | 74.06 | 69.73 | 57.35 | 76.54 | |||||||||||||
2013 | 51.97 | 56.89 | 68.55 | 75.00 | 84.39 | 92.63 | 88.52 | 91.84 | 86.57 | 76.03 | 61.07 | 51.52 | 73.75 | |||||||||||||
2014 | 55.81 | 57.25 | 65.74 | 74.93 | 81.39 | 90.50 | 89.81 | 90.65 | 78.40 | 78.48 | 58.43 | 56.39 | 73.15 | |||||||||||||
2015 | 48.94 | 57.96 | 63.74 | 74.27 | 76.52 | 89.13 | 91.52 | 91.71 | 89.13 | 74.26 | 64.43 | 56.52 | 73.18 | |||||||||||||
2016 | 54.26 | 64.17 | 71.26 | 73.97 | 79.32 | 91.70 | 99.32 | 89.48 | 82.63 | 79.68 | 66.47 | 55.23 | 75.62 | |||||||||||||
2017 | 55.19 | 66.18 | 74.35 | 76.00 | 83.10 | 94.20 | 92.55 | 85.52 | 84.10 | 74.35 | 70.03 | 57.90 | 76.12 | |||||||||||||
2018 | 55.35 | 60.89 | 70.10 | 75.80 | 90.55 | 95.83 | 93.13 | 90.45 | 81.97 | 69.55 | 58.70 | 53.77 | 74.67 | |||||||||||||
2019 | 55.61 | 60.11 | 62.16 | 75.00 | 79.32 | 88.33 | 93.55 | 96.52 | 88.33 | 70.19 | 60.07 | 58.26 | 73.95 | |||||||||||||
2020 | 57.97 | 55.00 | 66.55 | 75.47 | 88.26 | 93.67 | 98.81 | 96.65 | 85.23 | 76.16 | 69.00 | 58.03 | 76.73 | |||||||||||||
2021 | 51.97 | 52.04 | 68.00 | 72.03 | 80.94 | 90.97 | 89.16 | 90.55 | 89.33 | 80.19 | 68.37 | 66.16 | 74.98 | |||||||||||||
2022 | 54.42 | 54.89 | 67.35 | 79.33 | 89.52 | 93.63 | 99.74 | 91.13 | 87.80 | 72.61 | 58.87 | 54.39 | 75.31 | |||||||||||||
2023 | 57.03 | 58.04 | 67.71 | 74.30 | 82.77 | 90.87 | 97.00 | 97.42 | 89.93 | 75.35 | 64.70 | 58.48 | 76.13 | |||||||||||||
2024 | 51.42 | 62.24 | 66.19 | 74.19 | d | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 63.51 | h | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 53.96 | 58.07 | 66.43 | 74.92 | 82.89 | 90.69 | 92.26 | 90.43 | 83.64 | 74.76 | 63.38 | 55.10 | 73.79 | |||||||||||||
S.D. | 4.61 | 4.51 | 4.27 | 3.48 | 3.56 | 3.58 | 3.42 | 3.42 | 3.33 | 3.51 | 4.45 | 4.10 | 1.63 | |||||||||||||
SKEW | -0.33 | 0.02 | -0.36 | -0.07 | 0.55 | 0.50 | 0.20 | -0.02 | 0.33 | -0.28 | -0.26 | -0.55 | 0.14 | |||||||||||||
MAX | 62.87 | 67.79 | 75.00 | 82.33 | 90.55 | 99.67 | 99.74 | 99.90 | 90.67 | 81.90 | 71.73 | 66.16 | 77.03 | |||||||||||||
MIN | 43.97 | 46.50 | 53.58 | 66.17 | 76.52 | 84.70 | 84.84 | 80.56 | 76.30 | 67.16 | 53.33 | 43.39 | 70.72 | |||||||||||||
YRS | 61 | 61 | 59 | 62 | 60 | 60 | 60 | 59 | 60 | 61 | 61 | 59 | 50 |