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 | 64.40 | 72.88 | 73.39 | 73.81 | 68.00 | 54.48 | 42.63 | 38.37 | 61.00 | d | ||||||||
1960 | 32.42 | 33.48 | a | 45.26 | 56.33 | a | 62.23 | 71.32 | 69.94 | 70.10 | 64.78 | 53.95 | a | 46.68 | 32.12 | b | 53.22 | |||||||||
1961 | 33.71 | 39.43 | a | 45.50 | 53.43 | 63.97 | 71.15 | 71.71 | 71.74 | 63.71 | a | 56.18 | 40.65 | 35.02 | 53.85 | |||||||||||
1962 | 32.15 | 44.36 | 41.68 | 55.55 | 65.84 | 69.23 | 73.40 | 75.08 | 67.33 | 58.58 | 45.75 | 38.89 | 55.65 | |||||||||||||
1963 | 30.45 | 41.66 | 47.31 | 58.05 | 65.16 | 70.45 | 77.60 | 74.35 | 69.37 | 62.68 | 48.05 | 35.19 | 56.69 | |||||||||||||
1964 | 36.48 | 31.46 | a | 43.21 | 54.22 | 64.27 | 72.23 | 77.79 | 75.76 | 67.78 | 59.02 | 45.18 | 38.47 | 55.49 | ||||||||||||
1965 | 40.79 | 37.29 | 39.05 | 56.93 | 62.32 | 69.60 | 75.66 | 72.52 | 66.57 | 58.10 | 51.73 | 40.44 | 55.92 | |||||||||||||
1966 | 31.19 | 35.36 | 48.79 | 55.40 | 64.69 | 70.85 | 78.35 | 69.89 | 67.18 | 55.56 | 49.15 | 35.53 | 55.16 | |||||||||||||
1967 | 38.60 | 40.39 | 52.06 | 59.50 | 62.40 | 70.97 | 73.89 | 70.39 | 65.92 | 58.90 | 46.22 | 31.39 | 55.89 | |||||||||||||
1968 | 36.95 | 39.50 | 45.79 | 51.93 | 62.18 | 72.87 | 73.47 | 73.45 | 65.95 | 59.03 | 43.32 | 38.11 | 55.21 | |||||||||||||
1969 | 42.31 | b | 40.34 | 38.32 | 56.95 | 63.52 | 70.18 | 77.76 | 76.35 | 66.60 | 52.35 | 45.41 | a | 40.02 | 55.84 | |||||||||||
1970 | 34.65 | 44.09 | 42.48 | 53.41 | h | 65.61 | 71.03 | 75.79 | 74.66 | 64.97 | 52.31 | 46.73 | 41.48 | 55.80 | a | |||||||||||
1971 | 38.21 | 39.68 | 48.34 | 56.02 | 62.19 | 72.42 | 74.85 | 70.03 | 65.30 | 55.79 | 46.92 | 38.03 | 55.65 | |||||||||||||
1972 | 37.65 | d | 43.34 | 52.10 | 57.77 | 63.32 | a | 70.92 | 71.85 | 71.11 | 65.68 | 56.70 | a | 38.00 | 36.56 | 55.42 | ||||||||||
1973 | 33.16 | 37.82 | 43.73 | 48.36 | a | 60.16 | 69.83 | 72.81 | 74.19 | 65.03 | a | 58.44 | 49.28 | 37.08 | 54.16 | |||||||||||
1974 | 37.66 | 41.20 | 52.50 | 54.90 | 68.29 | 74.05 | 75.52 | a | 71.71 | 61.87 | 56.08 | 43.52 | 34.63 | 55.99 | ||||||||||||
1975 | 36.37 | 37.45 | 44.97 | 51.62 | 60.25 | a | 71.95 | 72.05 | a | 73.40 | 63.87 | 57.03 | 44.27 | 39.40 | 54.39 | |||||||||||
1976 | 35.79 | 46.33 | 45.42 | 55.43 | 61.10 | 71.98 | 72.24 | 72.98 | 65.53 | 51.98 | 39.65 | 36.52 | 54.58 | |||||||||||||
1977 | 31.19 | 41.25 | 44.89 | 54.52 | 63.77 | 75.02 | 76.53 | 75.13 | 70.00 | 57.92 | 46.23 | 41.69 | 56.51 | |||||||||||||
1978 | 30.97 | 33.66 | 47.24 | 58.78 | 62.66 | 73.17 | 77.90 | 73.21 | 66.08 | 57.68 | 44.82 | 31.48 | 54.80 | |||||||||||||
1979 | 27.11 | 39.23 | 46.21 | 53.85 | 61.63 | 69.12 | 75.57 | a | 71.92 | 67.62 | 60.15 | 40.27 | 37.84 | 54.21 | ||||||||||||
1980 | 37.15 | 38.84 | 43.94 | 51.55 | 60.27 | 77.67 | 80.52 | 75.52 | 67.98 | 54.37 | 42.07 | 44.66 | 56.21 | |||||||||||||
1981 | 37.60 | 42.25 | 45.34 | 58.93 | a | 62.32 | 75.50 | 76.19 | 71.15 | 66.33 | 55.61 | 50.37 | 41.19 | 56.90 | ||||||||||||
1982 | 37.87 | a | 38.54 | a | 48.08 | 55.15 | 62.84 | 70.68 | 75.65 | 74.76 | 68.52 | 55.37 | 44.66 | a | 33.70 | a | 55.48 | |||||||||
1983 | 35.56 | 39.30 | a | 45.84 | 49.53 | 59.79 | 69.82 | 76.19 | 76.81 | 71.18 | 58.57 | a | 47.36 | a | 29.44 | 54.95 | ||||||||||
1984 | 33.27 | 41.43 | 45.04 | c | ----- | z | ----- | z | ----- | z | ----- | z | 72.34 | 65.37 | 52.95 | 44.05 | 36.48 | a | 48.87 | d | ||||||
1985 | 31.88 | a | 37.78 | a | 46.95 | 56.29 | a | 63.63 | a | 71.17 | d | 75.21 | j | 75.40 | a | 65.79 | b | 56.11 | 45.41 | a | 34.28 | b | 53.15 | a | ||
1986 | 41.03 | 38.86 | 50.90 | b | 57.07 | 62.77 | a | 70.50 | 75.78 | a | 73.80 | d | 66.47 | 54.22 | a | 41.13 | 35.32 | c | 55.65 | |||||||
1987 | 32.97 | a | 39.86 | 43.27 | 52.83 | 61.76 | 70.84 | b | 75.08 | 73.02 | a | 65.42 | 58.80 | a | 43.77 | 33.08 | 54.22 | |||||||||
1988 | 32.26 | 39.72 | 44.53 | 53.90 | a | 62.27 | a | 70.66 | e | 72.83 | a | 72.55 | a | 64.78 | a | 58.30 | a | 46.52 | a | 35.16 | 54.46 | |||||
1989 | 39.00 | 34.95 | 51.05 | a | 58.55 | b | 67.47 | 70.30 | 75.05 | 73.27 | a | 65.13 | 58.44 | 46.74 | a | 32.23 | 56.01 | |||||||||
1990 | 35.69 | 39.50 | a | 46.90 | g | 54.30 | 63.10 | b | 79.14 | a | 74.05 | 71.97 | b | 68.42 | 55.82 | 47.05 | 35.71 | b | 56.79 | a | ||||||
1991 | 32.56 | 43.02 | b | 46.52 | 55.74 | a | 65.87 | a | 72.50 | a | 72.22 | b | 71.37 | e | 63.22 | 55.69 | 40.75 | 36.61 | 54.67 | |||||||
1992 | 34.05 | 42.62 | 47.95 | a | 57.63 | c | 60.84 | 69.25 | b | 75.35 | d | 71.55 | b | 67.85 | 59.33 | a | 40.88 | 34.68 | a | 55.17 | ||||||
1993 | 35.32 | 38.92 | c | 46.78 | a | 55.30 | b | 63.38 | b | 72.38 | a | 76.14 | c | 73.34 | c | 64.92 | e | 54.53 | a | 40.72 | a | 38.10 | b | 54.99 | ||
1994 | 36.73 | 39.20 | 47.47 | b | 55.83 | c | 63.80 | i | 76.40 | a | 77.35 | a | 75.68 | 69.77 | d | 56.55 | 46.52 | a | 40.74 | 56.57 | a | |||||
1995 | 38.76 | b | 45.38 | 47.88 | c | 53.45 | a | 62.29 | c | 70.48 | a | 76.67 | a | 76.45 | b | 66.60 | d | 57.83 | b | ----- | z | 38.56 | 57.67 | a | ||
1996 | 37.10 | 41.62 | a | 44.28 | a | 56.61 | b | 70.77 | 74.39 | c | 75.50 | a | 72.76 | b | 64.41 | a | 54.19 | b | 46.02 | a | 40.52 | a | 56.51 | |||
1997 | 32.50 | b | 37.71 | b | 48.80 | a | 48.19 | a | 62.52 | c | 70.80 | b | 75.94 | e | 73.25 | c | 68.84 | a | 55.67 | b | 42.27 | 30.90 | 53.95 | |||
1998 | 37.93 | a | 40.30 | 43.30 | a | 50.83 | d | 66.34 | b | 73.95 | b | 77.79 | b | 72.75 | a | 71.69 | a | ----- | z | 47.40 | 37.15 | a | 56.31 | a | ||
1999 | 40.60 | 44.31 | a | 46.26 | 52.83 | a | 60.88 | c | 70.75 | d | 74.36 | b | 74.48 | e | 66.79 | d | 56.17 | d | 50.15 | 35.42 | a | 56.08 | ||||
2000 | 40.34 | 46.59 | a | 48.24 | b | 57.89 | c | 68.66 | b | 72.55 | k | 76.62 | b | 76.90 | 71.15 | d | 56.58 | a | 37.88 | b | 33.83 | b | 55.88 | a | ||
2001 | 31.60 | a | 40.34 | 45.89 | d | 57.87 | c | 64.03 | a | 74.07 | a | 79.13 | a | 74.24 | b | 68.70 | c | 57.46 | c | 47.64 | b | 37.33 | b | 56.53 | ||
2002 | 36.77 | e | 38.43 | a | 44.44 | 60.13 | c | 66.20 | d | 77.15 | f | 74.76 | f | 75.67 | e | 67.00 | 53.88 | a | 42.50 | a | 35.90 | a | 52.09 | b | ||
2003 | 39.42 | a | 38.78 | a | 47.60 | b | 56.03 | 65.72 | d | 69.88 | 79.21 | e | 75.68 | 66.91 | a | 60.31 | e | 46.06 | c | 37.88 | b | 56.96 | ||||
2004 | 39.05 | b | 35.28 | 50.16 | 52.27 | b | 66.34 | c | 72.05 | a | 72.98 | a | 69.76 | b | 65.93 | a | 55.68 | 40.70 | 38.03 | b | 54.85 | |||||
2005 | 41.22 | f | 40.02 | c | 42.92 | a | 52.43 | b | 61.66 | 71.83 | 76.33 | d | 71.87 | 68.60 | a | 55.50 | 46.39 | c | 37.68 | c | 56.84 | a | ||||
2006 | 42.05 | a | 39.00 | a | 47.18 | 58.34 | b | 67.55 | c | 74.86 | a | 76.18 | c | 72.38 | b | 62.05 | a | 55.66 | 47.09 | a | 35.91 | d | 56.52 | |||
2007 | 28.17 | b | 41.10 | b | 49.35 | e | 50.92 | d | 61.09 | d | 69.84 | a | 74.02 | h | 76.04 | d | 69.30 | g | 59.39 | 45.71 | a | 36.84 | c | 51.84 | b | |
2008 | 33.48 | k | 42.10 | 46.74 | b | 53.86 | a | 62.97 | 75.15 | 72.82 | 72.30 | a | 65.41 | a | 56.87 | a | 47.84 | k | 36.62 | c | 58.49 | b | ||||
2009 | 40.37 | 44.43 | 48.52 | 53.34 | b | 64.58 | k | 72.90 | 75.21 | 75.10 | 65.12 | a | 54.79 | c | 48.38 | f | 30.84 | 56.06 | b | |||||||
2010 | 34.84 | 34.18 | 44.92 | 55.08 | 62.08 | 75.91 | a | 75.02 | 74.73 | 70.66 | e | 58.15 | a | 44.24 | a | 41.05 | 55.90 | |||||||||
2011 | 36.21 | 35.45 | 51.23 | 59.20 | 63.35 | a | 77.04 | c | 80.42 | a | 79.77 | 67.96 | b | 57.66 | c | 47.07 | 31.50 | c | 57.24 | |||||||
2012 | 40.05 | 38.70 | b | 52.44 | 60.25 | b | 65.74 | 76.86 | a | 77.57 | c | 76.53 | 67.83 | a | 57.03 | 49.52 | b | 39.90 | f | 60.23 | a | |||||
2013 | 34.21 | 37.79 | 47.16 | 52.29 | b | 64.31 | g | 75.75 | b | 75.32 | 75.61 | 69.23 | 55.12 | a | 42.30 | 35.58 | 54.58 | a | ||||||||
2014 | 37.40 | 39.86 | 46.31 | 55.17 | a | 63.53 | a | 74.36 | a | 74.75 | e | 73.00 | 66.37 | 59.94 | 42.15 | 37.85 | 55.89 | |||||||||
2015 | 33.50 | 39.29 | 47.43 | b | 55.43 | a | 59.62 | e | 71.91 | a | 76.00 | 75.02 | b | 72.17 | a | 58.58 | 44.92 | d | 38.98 | 56.07 | ||||||
2016 | 36.35 | 44.05 | 50.03 | 54.78 | 61.29 | 73.57 | 80.41 | c | 72.89 | 68.72 | 61.64 | f | 50.04 | d | 37.22 | a | 57.21 | a | ||||||||
2017 | 38.10 | 45.82 | c | 53.68 | 56.02 | 61.13 | h | 74.59 | c | 76.60 | 71.95 | a | 68.63 | c | 57.10 | 50.30 | 38.19 | 57.36 | a | |||||||
2018 | 37.56 | 41.45 | 50.45 | 55.03 | 69.35 | 77.67 | c | 76.61 | c | 74.23 | a | 68.23 | 54.80 | a | 41.71 | b | 36.32 | a | 56.95 | |||||||
2019 | 37.10 | a | 40.80 | 44.97 | b | 56.72 | a | 61.97 | b | 73.18 | b | 77.85 | 78.15 | 73.20 | c | 52.03 | 44.17 | 39.40 | 56.63 | |||||||
2020 | 38.61 | 38.66 | 51.19 | 55.77 | 68.15 | 76.38 | 79.31 | b | 78.55 | 66.35 | 56.27 | 48.40 | 37.98 | a | 57.97 | |||||||||||
2021 | 35.89 | 35.80 | a | 47.66 | 53.79 | a | 64.72 | a | 74.38 | 73.98 | d | 74.05 | a | 71.26 | a | 58.76 | 49.40 | 45.42 | 57.09 | |||||||
2022 | 35.84 | 34.27 | 46.89 | 58.23 | b | 68.16 | b | 76.18 | 80.82 | 75.23 | 70.42 | 55.76 | b | 42.96 | d | 37.92 | 56.89 | |||||||||
2023 | 37.10 | a | 40.32 | 47.05 | c | 54.92 | 64.55 | 72.10 | 79.81 | 78.60 | 71.28 | 57.86 | b | 46.77 | 41.03 | 57.62 | ||||||||||
2024 | 34.00 | 42.93 | a | 47.92 | a | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 41.62 | i | |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 35.91 | 39.80 | 46.86 | 55.16 | 63.76 | 72.72 | 75.80 | 73.88 | 67.22 | 56.61 | 45.10 | 36.90 | 55.68 | |||||||||||||
S.D. | 3.32 | 3.25 | 3.08 | 2.73 | 2.56 | 2.48 | 2.43 | 2.22 | 2.45 | 2.21 | 3.22 | 3.23 | 1.07 | |||||||||||||
SKEW | -0.35 | -0.14 | -0.14 | -0.41 | 0.67 | 0.59 | 0.06 | 0.32 | 0.27 | -0.02 | -0.19 | 0.01 | -0.12 | |||||||||||||
MAX | 42.31 | 46.59 | 53.68 | 60.25 | 70.77 | 79.14 | 80.82 | 79.77 | 73.20 | 62.68 | 51.73 | 45.42 | 57.97 | |||||||||||||
MIN | 27.11 | 31.46 | 38.32 | 48.19 | 59.62 | 69.12 | 69.94 | 69.76 | 61.87 | 51.98 | 37.88 | 29.44 | 53.22 | |||||||||||||
YRS | 63 | 65 | 64 | 62 | 60 | 62 | 61 | 65 | 64 | 63 | 62 | 64 | 47 |