YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1924 | 48.24 | j | 51.62 | 52.73 | a | 58.30 | 70.43 | c | 73.78 | c | 76.97 | 75.50 | c | 71.33 | 60.97 | a | 50.13 | 43.00 | a | 62.25 | a | |||||
1925 | 45.03 | 51.28 | c | 53.59 | b | 60.96 | c | 73.63 | d | 74.77 | 81.39 | 75.81 | 70.57 | 60.65 | 51.57 | 51.65 | 62.57 | |||||||||
1926 | 45.77 | 52.04 | 62.32 | 70.27 | 68.32 | 77.57 | 82.00 | 77.10 | 69.60 | 63.65 | 55.00 | 43.50 | a | 63.93 | ||||||||||||
1927 | 44.60 | a | 51.00 | 51.65 | 59.77 | 62.32 | 75.07 | 79.39 | 77.71 | ----- | z | 61.48 | 49.86 | a | 41.48 | 59.48 | a | |||||||||
1928 | 46.29 | 51.69 | 56.35 | 59.97 | 74.16 | 71.00 | 79.58 | 77.97 | 68.97 | 59.52 | 52.30 | 46.03 | 61.99 | |||||||||||||
1929 | 37.06 | 44.04 | 51.32 | 57.33 | 67.39 | 71.30 | 81.03 | 80.23 | 74.07 | 66.19 | 51.80 | 46.16 | 60.66 | |||||||||||||
1930 | 38.90 | 49.82 | 56.33 | a | 64.93 | 65.58 | 70.87 | 78.84 | 80.16 | 68.10 | 60.94 | 50.53 | 47.55 | 61.05 | ||||||||||||
1931 | 50.61 | 52.50 | 54.87 | 65.00 | 73.55 | 73.38 | a | 81.45 | 80.90 | 69.60 | 62.71 | 48.97 | 45.06 | 63.22 | ||||||||||||
1932 | 42.77 | 46.45 | 50.37 | a | 61.53 | 68.13 | 76.43 | 74.90 | 76.77 | a | 75.73 | 60.33 | a | 53.50 | 42.83 | a | 60.81 | |||||||||
1933 | 42.06 | 42.18 | 52.10 | 61.69 | a | 65.03 | a | 72.03 | 78.87 | 80.94 | 65.13 | 60.81 | 51.70 | 47.77 | 60.03 | |||||||||||
1934 | 49.03 | 57.57 | 62.48 | 69.62 | a | 71.42 | 74.87 | 76.35 | 79.58 | 68.97 | 65.00 | 53.77 | 46.94 | 64.63 | ||||||||||||
1935 | 48.95 | l | 53.79 | 49.26 | 62.03 | 68.42 | 72.97 | 77.26 | 77.26 | 74.77 | 60.23 | 49.57 | 50.52 | 63.28 | a | |||||||||||
1936 | 46.87 | 39.86 | 51.55 | 63.97 | 70.58 | 72.73 | 77.48 | 80.06 | 70.17 | 64.06 | 53.40 | 45.81 | 61.38 | |||||||||||||
1937 | 35.97 | 47.07 | a | 57.87 | 56.23 | 68.00 | 74.67 | 77.94 | 76.13 | 71.40 | 66.77 | 52.30 | 48.26 | 61.05 | ||||||||||||
1938 | 46.87 | a | 52.39 | 53.37 | a | 62.43 | 69.37 | a | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 48.13 | 55.43 | f | |||
1939 | 47.06 | 45.50 | 54.74 | 64.03 | 68.55 | 68.70 | 77.71 | 80.52 | 71.40 | 61.00 | 58.60 | 52.17 | a | 62.50 | ||||||||||||
1940 | 49.29 | 51.59 | 58.48 | 63.47 | 72.87 | a | 76.63 | 77.03 | 79.87 | 75.68 | b | 66.19 | 51.66 | a | 51.27 | a | 64.50 | |||||||||
1941 | 52.29 | 57.21 | 65.81 | 65.76 | a | 67.19 | 71.08 | d | 81.88 | g | 78.47 | a | 67.30 | 62.68 | 57.43 | 49.57 | a | 63.16 | a | |||||||
1942 | 48.84 | 50.54 | 56.77 | 64.03 | 66.27 | a | 69.62 | a | 79.40 | a | ----- | z | 73.50 | 67.04 | d | 53.73 | h | 47.13 | 62.31 | b | ||||||
1943 | 42.10 | 55.54 | 54.06 | 64.67 | 64.61 | 70.83 | 76.48 | d | 76.48 | 78.14 | a | 63.50 | a | 58.20 | 48.13 | 62.73 | ||||||||||
1944 | 48.87 | 49.38 | 54.58 | 62.33 | 67.70 | a | 71.96 | e | 77.94 | 76.38 | e | 76.16 | e | 69.10 | a | 54.78 | c | 48.18 | c | 63.11 | ||||||
1945 | 50.39 | 50.21 | ----- | z | ----- | z | 71.09 | h | 74.27 | d | 78.03 | 77.07 | c | 67.41 | a | 64.93 | b | 46.93 | c | 47.59 | b | 61.87 | c | |||
1946 | 45.36 | f | 47.64 | 52.16 | 57.86 | a | 70.96 | d | 68.67 | c | 76.58 | 75.29 | 70.75 | b | 57.20 | a | 50.24 | e | 44.34 | b | 61.06 | a | ||||
1947 | 41.82 | c | 52.11 | a | 57.94 | 62.39 | b | 70.17 | a | 69.03 | a | 74.77 | 75.69 | e | ----- | z | ----- | z | ----- | z | ----- | z | 62.99 | d | ||
1948 | ----- | z | ----- | z | ----- | z | 55.39 | b | 63.87 | a | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 46.55 | j | 41.23 | 53.50 | i | |
1949 | 37.77 | 47.48 | g | 55.29 | 62.20 | 69.71 | 70.50 | b | 73.42 | 73.87 | 68.09 | g | 55.87 | 57.88 | e | 42.57 | a | 59.91 | b | |||||||
1950 | 29.10 | 45.36 | 48.42 | 57.57 | 64.42 | 72.30 | 77.90 | 77.58 | 73.72 | l | 56.83 | a | 49.30 | 49.60 | a | 57.13 | a | |||||||||
1951 | 44.82 | t | 46.20 | w | 50.81 | 68.43 | 68.45 | 76.70 | 83.06 | 78.71 | 74.77 | 60.58 | 52.43 | 43.35 | 65.73 | b | ||||||||||
1952 | 42.39 | 50.10 | 51.61 | 64.87 | 68.34 | b | 69.27 | 79.35 | 78.52 | 75.43 | 66.87 | 52.70 | 47.87 | 62.28 | ||||||||||||
1953 | 52.00 | 50.18 | 52.87 | 59.23 | 66.57 | a | 66.67 | 78.19 | 78.00 | b | 75.03 | a | 63.74 | 56.87 | 49.53 | a | 62.41 | |||||||||
1954 | 41.94 | 52.61 | 54.23 | 56.82 | b | 68.70 | a | 68.17 | a | 73.69 | b | 71.90 | 70.30 | 62.61 | 57.93 | 50.77 | 60.81 | |||||||||
1955 | 46.32 | 47.07 | 47.58 | 57.03 | 63.00 | a | 70.97 | 72.30 | a | 76.87 | 70.30 | 61.48 | 45.93 | 45.20 | a | 58.67 | ||||||||||
1956 | 46.26 | 42.41 | 51.13 | 66.47 | 73.04 | d | 73.67 | x | 81.13 | 78.30 | a | 71.93 | 57.16 | 51.37 | 47.39 | 60.60 | a | |||||||||
1957 | 39.45 | 47.18 | 54.10 | 61.73 | 70.33 | a | 72.63 | 74.47 | a | 75.84 | 78.37 | 60.32 | 53.03 | 49.77 | 61.44 | |||||||||||
1958 | 50.19 | 55.41 | a | 56.40 | a | 61.70 | 76.26 | 77.90 | 87.03 | 83.55 | 71.13 | 65.90 | 50.03 | 52.26 | 65.65 | |||||||||||
1959 | 45.97 | 47.43 | 52.10 | 60.63 | 66.40 | a | 72.93 | 80.61 | 76.13 | 66.70 | 61.00 | 51.77 | 47.10 | 60.73 | ||||||||||||
1960 | 43.47 | a | 49.00 | 54.94 | 62.17 | 63.52 | 71.97 | 82.63 | a | 74.61 | 70.53 | 62.45 | 51.03 | 46.90 | 61.10 | |||||||||||
1961 | 52.80 | a | 50.57 | 55.39 | 57.67 | 65.94 | 77.03 | 80.68 | 83.35 | 70.33 | 60.39 | 48.97 | 44.19 | 62.28 | ||||||||||||
1962 | 45.45 | 53.07 | 53.39 | 63.13 | 60.40 | a | 72.43 | 76.10 | 75.35 | 73.30 | 62.29 | 53.43 | 48.10 | 61.37 | ||||||||||||
1963 | 40.19 | 57.36 | 53.65 | 57.60 | 70.81 | 68.13 | 72.65 | 76.29 | 76.83 | 63.39 | 51.60 | 47.74 | 61.35 | |||||||||||||
1964 | 45.84 | 50.38 | 52.10 | a | 56.43 | 64.87 | a | 70.27 | 75.90 | 73.74 | 68.70 | 66.23 | 46.70 | 41.45 | 59.38 | |||||||||||
1965 | 44.74 | 48.07 | 58.50 | a | 61.77 | 63.71 | 73.70 | 80.94 | 77.74 | 69.57 | 67.06 | 55.70 | 45.47 | a | 62.25 | |||||||||||
1966 | 45.19 | 49.89 | 55.26 | 61.03 | 68.26 | 71.30 | 74.32 | 77.74 | 74.07 | 63.43 | a | 52.07 | a | 47.68 | 61.69 | |||||||||||
1967 | 46.61 | 51.07 | a | 50.65 | 58.13 | 66.52 | 77.43 | 79.55 | 87.06 | 80.00 | 62.68 | 55.20 | 44.84 | 63.31 | ||||||||||||
1968 | 46.16 | 58.28 | 56.35 | 58.41 | a | 68.48 | 71.21 | b | 80.32 | 74.00 | 71.60 | 60.97 | 52.53 | 40.87 | 61.60 | |||||||||||
1969 | 37.03 | 48.86 | 58.48 | 59.80 | 71.84 | 76.10 | 76.58 | 74.32 | 69.17 | 62.13 | 53.20 | 50.37 | a | 61.49 | ||||||||||||
1970 | 45.81 | 57.28 | c | 55.63 | a | 55.73 | 67.29 | 75.43 | b | 78.31 | b | 77.45 | b | 67.30 | 62.17 | a | 52.96 | b | 43.13 | a | 61.54 | |||||
1971 | 44.42 | 47.75 | 47.83 | a | 60.87 | 69.32 | 67.23 | 80.29 | 82.10 | 69.13 | 57.61 | 49.00 | 41.42 | 59.75 | ||||||||||||
1972 | 41.39 | 48.48 | 52.74 | 53.87 | 68.39 | 68.43 | 76.77 | 78.48 | 66.23 | 59.84 | 51.77 | 42.39 | 59.07 | |||||||||||||
1973 | 45.00 | 52.71 | 52.77 | 59.43 | 68.26 | 69.03 | 77.29 | 72.61 | 71.40 | 59.55 | 45.63 | 47.61 | 60.11 | |||||||||||||
1974 | 43.65 | 47.04 | 51.42 | 55.63 | 59.97 | a | 70.67 | 74.48 | 77.74 | d | 78.17 | 65.06 | 50.97 | 47.48 | 60.19 | |||||||||||
1975 | 43.45 | 47.04 | 50.39 | 53.80 | 64.52 | 66.43 | 76.00 | 70.97 | 73.52 | a | 57.73 | a | 49.73 | 46.93 | b | 58.38 | ||||||||||
1976 | 47.90 | 47.11 | a | 49.23 | 57.50 | d | 66.87 | 66.72 | a | 73.87 | a | 68.90 | 70.73 | 62.13 | 54.34 | a | 49.33 | a | 59.55 | |||||||
1977 | 43.42 | 56.25 | 49.19 | 62.17 | a | 61.06 | 71.97 | 72.68 | 79.74 | 67.53 | 60.90 | 48.33 | 45.87 | 59.93 | ||||||||||||
1978 | 48.48 | 52.07 | 56.29 | 59.03 | 62.74 | ----- | z | 75.52 | 74.71 | 65.90 | 64.58 | 48.28 | a | 41.74 | 59.03 | a | ||||||||||
1979 | 40.40 | a | 45.93 | 57.58 | 57.60 | 66.93 | c | 72.69 | a | 78.13 | 76.50 | a | 73.36 | b | 63.39 | 53.00 | a | 49.03 | 61.21 | |||||||
1980 | 40.63 | a | 50.79 | 50.32 | 62.53 | 63.55 | 66.77 | 74.45 | 72.29 | 69.63 | 64.70 | a | 53.87 | 48.65 | 59.85 | |||||||||||
1981 | 54.29 | 50.61 | 57.29 | 55.53 | 63.03 | 65.93 | a | 71.94 | 80.23 | 70.23 | 57.03 | 55.50 | 45.93 | a | 60.63 | |||||||||||
1982 | 42.12 | e | 47.00 | 53.52 | 57.67 | 64.26 | 74.77 | 72.97 | b | 75.06 | 70.66 | a | 62.03 | 48.73 | 46.71 | 59.62 | ||||||||||
1983 | 51.06 | 53.00 | 56.35 | 62.17 | 69.03 | 67.80 | 71.61 | 75.55 | 67.53 | 60.29 | 51.79 | a | 39.07 | a | 60.44 | |||||||||||
1984 | 48.47 | a | 50.03 | 56.39 | 58.00 | a | 62.47 | a | 67.80 | 77.55 | 77.13 | 69.67 | 57.61 | 49.67 | 41.06 | 59.65 | ||||||||||
1985 | 47.40 | a | 46.25 | 53.03 | 57.69 | a | 66.13 | 71.00 | ----- | z | ----- | z | 67.90 | ----- | z | 40.90 | 42.19 | 54.72 | c | |||||||
1986 | 53.27 | a | 50.39 | 59.13 | 55.00 | 65.45 | 74.10 | 71.47 | a | 80.61 | 67.83 | a | 65.13 | 50.63 | 47.10 | 61.68 | ||||||||||
1987 | 46.19 | 53.89 | 55.35 | n | 62.80 | 67.61 | 72.77 | 74.58 | 76.97 | 74.10 | 67.32 | 54.63 | 44.26 | 63.19 | a | |||||||||||
1988 | 46.74 | 50.83 | 53.29 | 59.47 | 65.68 | 68.50 | 75.55 | 75.71 | 71.00 | 63.00 | 50.00 | 47.94 | 60.64 | |||||||||||||
1989 | 45.23 | 41.89 | 50.58 | 62.77 | 64.16 | 72.87 | 72.74 | 72.81 | 74.63 | 60.26 | 51.23 | 46.03 | 59.60 | |||||||||||||
1990 | 47.81 | 45.19 | a | 56.55 | 60.77 | 62.39 | 67.43 | 78.42 | 78.52 | 73.21 | b | 57.58 | 51.90 | 39.10 | 59.90 | |||||||||||
1991 | 45.16 | 55.68 | 51.68 | 57.87 | 59.87 | 64.83 | 76.55 | 77.94 | 73.33 | 62.68 | 50.97 | 48.26 | 60.40 | |||||||||||||
1992 | 49.06 | 56.07 | 60.71 | 63.27 | 69.94 | 74.70 | 74.29 | 78.03 | 69.23 | 61.77 | 50.72 | a | 42.80 | a | 62.55 | |||||||||||
1993 | 43.39 | 50.68 | 56.03 | 56.90 | 70.71 | 67.80 | 68.48 | 75.23 | 72.57 | 63.74 | 47.27 | 46.03 | 59.90 | |||||||||||||
1994 | 48.48 | 44.25 | 57.23 | 60.57 | ----- | z | 68.80 | 79.32 | ----- | z | 74.73 | ----- | z | 45.70 | 45.71 | 58.31 | c | |||||||||
1995 | ----- | z | 52.82 | 56.23 | a | 59.80 | 68.77 | 71.10 | 76.90 | a | 70.48 | 74.73 | 58.90 | 56.27 | 48.71 | 63.16 | a | |||||||||
1996 | 44.03 | a | 51.00 | 55.71 | 60.03 | a | 59.90 | ----- | z | 78.97 | 77.16 | 67.23 | 59.23 | a | 50.29 | b | 43.81 | 58.85 | a | |||||||
1997 | 46.73 | a | 51.14 | 51.84 | 59.10 | a | 68.81 | 68.40 | 74.77 | 78.90 | 74.60 | 58.90 | 57.73 | 48.00 | 61.58 | |||||||||||
1998 | 46.26 | 53.43 | 54.42 | 59.97 | a | 62.58 | 68.07 | 78.26 | 78.90 | 75.80 | 63.03 | ----- | z | 44.06 | 62.25 | a | ||||||||||
1999 | 47.19 | 47.89 | 52.00 | 57.77 | 61.27 | a | 66.00 | 72.77 | 75.38 | b | ----- | z | 61.70 | a | 53.50 | 46.26 | 58.34 | a | ||||||||
2000 | 46.23 | 51.45 | 52.33 | a | 61.00 | b | 63.26 | 71.20 | 72.71 | 75.16 | 70.07 | ----- | z | 49.73 | 46.62 | w | 61.31 | b | ||||||||
2001 | ----- | z | 52.67 | m | 54.42 | 58.54 | f | 66.39 | 67.86 | b | 76.04 | g | 75.64 | c | 70.52 | a | 58.37 | a | 52.88 | e | ----- | z | 63.72 | e | ||
2002 | 46.45 | 49.54 | 49.00 | a | 57.23 | 63.03 | a | 72.23 | 74.81 | 77.77 | 72.40 | 61.00 | 55.47 | 50.10 | a | 60.75 | ||||||||||
2003 | 54.58 | 49.57 | 53.03 | 57.53 | 65.46 | c | 73.23 | 81.06 | 80.55 | 75.14 | a | 64.29 | 48.83 | 47.42 | 62.56 | |||||||||||
2004 | 44.97 | 51.34 | 57.80 | a | 64.27 | 66.00 | 73.87 | 79.55 | 79.74 | 67.70 | 61.77 | 51.67 | 47.38 | b | 62.17 | |||||||||||
2005 | 49.17 | a | 54.93 | 58.13 | 60.53 | 67.62 | b | 66.97 | 77.10 | 79.42 | 69.90 | 61.84 | 47.17 | a | 46.19 | 61.58 | ||||||||||
2006 | 48.32 | 49.36 | 54.03 | 62.53 | 67.32 | 72.83 | 78.97 | 78.27 | a | 73.17 | 60.77 | 49.70 | 47.23 | a | 61.88 | |||||||||||
2007 | 44.76 | b | 50.89 | 53.48 | 58.27 | 67.16 | 70.23 | 78.97 | 76.93 | a | 70.00 | 60.67 | a | 50.53 | 44.03 | a | 60.49 | |||||||||
2008 | 43.03 | 49.97 | 49.35 | 54.76 | a | 63.23 | 66.17 | 75.94 | 76.29 | 71.23 | 61.65 | 55.14 | a | 40.61 | 58.95 | |||||||||||
2009 | 43.52 | 50.54 | 47.67 | y | 57.90 | 74.44 | v | ----- | z | 81.94 | 78.58 | 75.40 | 58.80 | a | 51.30 | 43.77 | 60.19 | c | ||||||||
2010 | ----- | z | 54.46 | 57.00 | b | 58.00 | 60.68 | 66.67 | 77.83 | a | 75.52 | 66.93 | 63.06 | 48.13 | 47.68 | 61.45 | a | |||||||||
2011 | 45.67 | a | 46.07 | 51.90 | 51.43 | 59.52 | 66.50 | b | 71.52 | 75.84 | 74.59 | a | 58.84 | 49.20 | 43.48 | 57.88 | ||||||||||
2012 | 45.16 | 48.48 | 49.13 | 59.93 | 64.35 | 64.73 | 74.29 | 78.65 | 73.97 | 62.39 | 52.73 | 44.10 | 59.83 | |||||||||||||
2013 | 40.16 | 47.25 | 53.65 | 57.77 | 66.81 | 72.20 | 79.55 | 77.84 | 71.57 | 58.40 | a | 52.57 | 41.65 | 59.95 | ||||||||||||
2014 | 47.87 | 45.14 | 53.55 | 60.27 | 68.81 | 69.97 | 81.06 | 80.35 | 73.83 | a | 66.16 | 52.50 | 49.90 | 62.45 | ||||||||||||
2015 | 51.77 | a | 56.21 | 60.90 | 60.60 | 70.33 | a | 79.73 | 82.81 | 80.61 | 69.13 | 65.32 | 50.80 | 46.39 | 64.55 | |||||||||||
2016 | 48.29 | 55.31 | 56.52 | 66.77 | 67.52 | 73.43 | 75.00 | 79.16 | 69.80 | 61.74 | 56.27 | 41.26 | 62.59 | |||||||||||||
2017 | 43.77 | 47.43 | 51.33 | a | 58.10 | 68.93 | a | 72.07 | 79.71 | 83.26 | 74.53 | 60.45 | 49.87 | 44.94 | 61.20 | |||||||||||
2018 | 48.94 | 44.86 | 54.84 | 60.40 | 70.58 | 71.37 | 81.84 | 78.81 | 70.27 | 61.74 | 52.50 | 47.68 | 61.98 | |||||||||||||
2019 | 49.74 | 41.36 | 57.87 | 58.87 | 70.03 | 72.20 | 74.58 | 78.16 | 69.60 | 57.60 | a | 53.67 | 46.90 | 60.88 | ||||||||||||
2020 | 45.35 | 48.52 | 52.25 | c | 60.67 | 67.87 | 68.53 | 76.16 | 78.52 | 74.00 | 60.39 | 51.97 | a | 49.35 | 61.13 | |||||||||||
2021 | 48.03 | b | 44.11 | 54.23 | 63.70 | 66.13 | 78.17 | 80.00 | 78.87 | 71.77 | 58.50 | a | 53.30 | 45.76 | n | 63.35 | a | |||||||||
2022 | 44.13 | 48.22 | a | 54.63 | a | 55.13 | 59.68 | 70.03 | 80.00 | a | 82.67 | d | 77.36 | b | 66.53 | a | 49.20 | 41.32 | 60.74 | |||||||
2023 | 48.23 | 46.64 | 52.48 | 55.97 | 73.40 | a | 71.93 | 81.19 | 80.50 | c | 71.85 | c | 63.48 | 53.00 | 51.81 | 62.54 | ||||||||||
2024 | 44.32 | 50.38 | 54.57 | h | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 47.35 | j | ||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 45.61 | 49.94 | 54.18 | 60.14 | 66.84 | 71.28 | 77.30 | 77.50 | 71.65 | 61.91 | 51.74 | 46.12 | 61.26 | |||||||||||||
S.D. | 4.16 | 3.89 | 3.37 | 3.48 | 3.63 | 3.36 | 3.26 | 2.93 | 3.18 | 2.84 | 3.10 | 3.10 | 1.51 | |||||||||||||
SKEW | -0.71 | -0.09 | 0.58 | 0.40 | -0.01 | 0.21 | -0.02 | -0.01 | 0.28 | 0.17 | -0.19 | -0.23 | 0.41 | |||||||||||||
MAX | 54.58 | 58.28 | 65.81 | 70.27 | 76.26 | 79.73 | 87.03 | 87.06 | 80.00 | 69.10 | 58.60 | 52.26 | 65.65 | |||||||||||||
MIN | 29.10 | 39.86 | 47.58 | 51.43 | 59.52 | 64.73 | 68.48 | 68.90 | 65.13 | 55.87 | 40.90 | 39.07 | 57.88 | |||||||||||||
YRS | 93 | 97 | 96 | 98 | 97 | 94 | 95 | 95 | 93 | 94 | 95 | 96 | 73 |