YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1930 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1931 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1932 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1933 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1934 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1935 | 47.30 | u | 50.29 | 59.05 | 71.15 | 72.07 | a | 76.25 | 77.87 | 79.52 | 67.22 | 65.60 | a | 53.28 | 43.05 | 65.03 | a | |||||||||
1936 | 45.58 | 48.48 | i | 55.37 | 62.25 | 69.50 | b | 79.07 | 78.81 | 78.73 | c | 69.87 | c | 61.37 | 51.79 | m | 48.60 | b | 64.92 | b | ||||||
1937 | 42.05 | a | 48.59 | l | ----- | z | 65.85 | 71.52 | a | 76.87 | 78.92 | 78.60 | 72.78 | c | 65.33 | a | 53.25 | 47.13 | 65.23 | b | ||||||
1938 | 46.80 | a | 52.05 | 51.55 | 63.00 | 70.42 | 76.80 | 75.79 | 78.40 | 71.38 | 66.21 | 52.10 | a | 48.16 | 62.72 | |||||||||||
1939 | 46.90 | 44.32 | 56.50 | 64.50 | 73.63 | 79.85 | 77.79 | 75.69 | 74.70 | b | 64.40 | 48.50 | g | 51.53 | 64.53 | a | ||||||||||
1940 | 39.52 | 47.84 | 56.58 | 62.72 | 69.69 | 74.08 | 78.42 | 74.77 | 72.68 | 63.25 | a | 51.40 | 50.53 | 61.79 | ||||||||||||
1941 | 45.90 | 49.73 | 49.87 | 59.43 | 67.58 | 71.97 | 76.35 | 77.27 | 69.32 | 62.02 | 53.47 | 46.47 | b | 60.78 | ||||||||||||
1942 | 43.98 | 43.22 | a | 51.65 | a | 60.16 | a | 68.56 | 77.47 | a | 77.53 | 73.90 | 67.67 | 60.68 | a | 56.68 | 48.26 | 60.81 | ||||||||
1943 | 45.73 | 51.45 | 52.58 | 67.10 | 69.35 | 77.08 | 76.95 | 81.73 | 71.88 | 62.45 | 50.97 | a | 41.34 | 62.38 | ||||||||||||
1944 | 43.06 | 46.78 | 51.48 | b | 58.78 | a | 69.76 | 77.50 | 78.89 | 77.12 | a | 66.83 | 60.53 | 56.47 | o | 42.53 | p | 63.07 | b | |||||||
1945 | 46.21 | b | 50.85 | d | 56.36 | c | 60.65 | f | 72.23 | a | 78.52 | b | 74.90 | b | 79.57 | c | ----- | z | 60.80 | c | 58.50 | b | 47.21 | e | 62.52 | b |
1946 | 41.32 | f | 48.98 | c | 56.71 | c | 67.36 | b | 69.15 | d | 76.24 | c | 78.79 | 79.62 | k | 74.75 | n | 66.43 | a | 53.93 | h | 50.70 | h | 66.24 | e | |
1947 | 41.05 | c | 43.92 | d | 52.11 | c | 60.98 | b | 70.98 | a | 79.63 | 81.27 | 77.13 | 75.70 | 69.52 | 50.30 | h | 45.16 | 63.41 | a | ||||||
1948 | 36.73 | c | 45.31 | 49.95 | 68.05 | 71.47 | 80.64 | a | 79.79 | 80.61 | 74.03 | a | 63.45 | 51.83 | 51.39 | 62.77 | ||||||||||
1949 | 35.23 | 49.43 | 55.32 | 58.10 | 71.69 | 77.05 | a | 79.24 | 76.97 | 70.43 | 61.89 | 60.52 | e | 47.98 | 61.99 | |||||||||||
1950 | 52.83 | b | 55.55 | 58.74 | 66.35 | 72.52 | 79.26 | a | 76.65 | a | 77.88 | b | 72.23 | 69.33 | b | 54.34 | e | 52.32 | 65.67 | |||||||
1951 | 47.69 | 50.18 | 54.95 | 61.28 | 72.16 | b | 79.75 | b | 83.37 | a | 81.26 | 76.75 | 67.02 | 54.25 | 50.20 | c | 64.90 | |||||||||
1952 | 53.85 | 51.78 | 52.29 | 61.24 | a | 71.85 | 80.32 | 77.65 | 83.60 | 73.27 | 66.73 | 49.38 | 45.75 | k | 65.63 | a | ||||||||||
1953 | 54.47 | 49.09 | 58.37 | 60.93 | 70.11 | 83.13 | 81.23 | 79.56 | 75.88 | 65.03 | a | 55.08 | 42.32 | 64.60 | ||||||||||||
1954 | 51.60 | 55.91 | 55.21 | 67.98 | 67.79 | 78.05 | 80.76 | 77.98 | 76.75 | 65.82 | 56.78 | 50.32 | 65.41 | |||||||||||||
1955 | 44.03 | a | 48.11 | 58.08 | 66.10 | 71.06 | 77.73 | 77.71 | 78.23 | a | 75.02 | 66.47 | a | 53.78 | a | 52.29 | 64.05 | |||||||||
1956 | 49.82 | 46.22 | 58.11 | 61.92 | 75.29 | 81.77 | 80.68 | 79.06 | 76.47 | 68.00 | 52.97 | 50.27 | 65.05 | |||||||||||||
1957 | 48.32 | 56.29 | 54.89 | 61.38 | 67.26 | 78.58 | 81.18 | 79.77 | 73.70 | 59.67 | a | ----- | z | 51.79 | 64.80 | a | ||||||||||
1958 | 43.32 | 47.32 | 47.06 | 59.83 | 71.53 | 80.40 | 81.34 | 79.69 | 70.48 | 59.06 | 54.28 | 48.89 | 61.94 | |||||||||||||
1959 | 47.76 | 48.34 | 55.82 | 61.86 | a | 72.03 | 78.79 | b | 77.47 | 78.95 | 77.13 | 65.52 | 50.45 | 48.48 | 63.55 | |||||||||||
1960 | 43.57 | a | 43.28 | b | 53.83 | a | 65.29 | a | 72.16 | 81.24 | a | 77.71 | 77.79 | 74.52 | 64.35 | a | 56.05 | b | 39.94 | 62.48 | ||||||
1961 | 42.39 | 50.12 | 55.65 | 63.37 | 73.32 | 76.95 | a | 77.24 | 76.56 | 71.86 | b | 65.26 | 47.45 | 47.61 | 62.31 | |||||||||||
1962 | 42.13 | 55.94 | b | 52.33 | d | 63.91 | c | 73.22 | d | 75.80 | 77.00 | 80.10 | 72.17 | 66.68 | 56.32 | 48.03 | 63.64 | |||||||||
1963 | 41.92 | 52.23 | 56.73 | 66.98 | 71.63 | 76.70 | 81.11 | 77.22 | a | 73.72 | j | 68.38 | a | 56.17 | a | 44.28 | b | 63.03 | a | |||||||
1964 | 44.27 | a | 43.68 | a | 53.72 | a | 64.41 | a | 71.82 | 75.32 | 80.52 | 80.66 | 72.48 | 66.02 | a | 54.28 | 48.81 | 63.00 | ||||||||
1965 | 50.27 | 45.86 | 49.27 | 66.15 | 70.63 | 76.70 | 80.13 | 76.81 | 73.52 | 64.52 | 58.90 | 49.97 | 63.56 | |||||||||||||
1966 | 40.42 | 45.12 | 56.85 | 62.42 | 70.34 | 75.43 | 82.47 | 74.65 | 71.36 | b | 64.11 | c | 59.12 | 47.48 | a | 62.48 | ||||||||||
1967 | 49.42 | 50.91 | 62.53 | 67.90 | 71.50 | 76.42 | 79.10 | 76.05 | 70.22 | 66.97 | 55.68 | b | 43.27 | 64.16 | ||||||||||||
1968 | 46.29 | 47.56 | b | 52.17 | a | 60.71 | a | 70.66 | c | 77.57 | 76.24 | b | 76.39 | 70.17 | 65.55 | 50.82 | 47.08 | 61.77 | ||||||||
1969 | 50.06 | 48.66 | 44.98 | 63.50 | 69.37 | 76.52 | 81.31 | 80.42 | 71.45 | 59.42 | 51.07 | 47.40 | 62.01 | |||||||||||||
1970 | 43.02 | 47.04 | 48.24 | 61.97 | 69.42 | 74.85 | 76.94 | 78.37 | 69.42 | 57.11 | 54.66 | a | 52.11 | 61.09 | ||||||||||||
1971 | 47.48 | 45.48 | 55.90 | 60.17 | 69.20 | a | 76.87 | 77.32 | a | 71.10 | 69.57 | 62.31 | 54.84 | a | 46.44 | 61.39 | ||||||||||
1972 | ----- | z | 48.57 | 59.34 | 66.53 | 68.92 | a | 77.25 | 76.53 | 73.53 | 71.17 | 62.21 | 45.27 | b | 45.63 | 63.18 | a | |||||||||
1973 | 40.29 | 42.23 | 52.08 | 56.47 | 67.61 | 74.70 | 75.73 | 77.24 | 69.47 | 63.15 | g | ----- | z | 49.10 | 60.49 | b | ||||||||||
1974 | 42.37 | ----- | z | 59.57 | a | 62.77 | 73.53 | 76.98 | a | 77.11 | 71.61 | 62.72 | 59.31 | 50.93 | a | 43.50 | 61.85 | a | ||||||||
1975 | 43.47 | 46.05 | 51.92 | a | 59.47 | a | 67.26 | 74.72 | j | 71.33 | a | 75.44 | 67.53 | a | 65.58 | a | 49.11 | k | 40.00 | n | 60.89 | c | ||||
1976 | 44.55 | c | ----- | z | 55.15 | 63.02 | c | 65.48 | 75.63 | 72.58 | 76.42 | 67.63 | 56.08 | 46.31 | c | 44.43 | c | 60.66 | a | |||||||
1977 | 40.05 | 48.65 | a | 52.62 | b | 60.92 | 70.78 | b | 78.02 | 79.37 | a | 79.63 | 77.48 | a | 63.55 | a | 54.59 | a | 48.41 | b | 62.84 | |||||
1978 | 40.35 | 41.65 | a | 50.38 | k | 62.95 | a | 69.62 | a | 77.30 | 79.87 | 76.40 | 68.00 | c | 60.95 | 50.47 | a | 42.05 | 60.87 | a | ||||||
1979 | 35.97 | 45.18 | 51.98 | 61.14 | a | 66.47 | 73.02 | 77.26 | 73.66 | 71.57 | 67.39 | 48.97 | a | 46.65 | 59.94 | |||||||||||
1980 | 46.58 | 47.31 | 52.63 | 58.65 | 67.98 | a | 83.08 | 83.37 | a | 76.92 | a | 71.12 | 60.32 | a | 49.71 | a | 49.15 | 62.23 | ||||||||
1981 | 44.77 | a | 50.09 | 51.34 | 63.53 | 69.16 | 77.95 | 77.35 | 72.90 | 69.82 | 62.35 | 58.41 | a | 50.39 | 62.34 | |||||||||||
1982 | 43.79 | c | 46.58 | b | 56.79 | b | 61.82 | b | 66.59 | c | 75.18 | e | 78.29 | c | 77.55 | 73.14 | e | 60.08 | e | 49.56 | d | 41.46 | c | 60.90 | ||
1983 | 43.33 | h | 46.90 | g | 52.50 | d | 55.42 | f | 68.40 | e | 74.29 | d | 77.57 | h | 77.55 | c | 72.29 | d | 61.36 | b | 54.33 | c | 39.84 | b | 62.57 | d |
1984 | 40.67 | d | 49.71 | e | 54.07 | d | 61.07 | c | 71.69 | d | 73.98 | 76.60 | a | 74.26 | 68.70 | b | 57.55 | c | 52.04 | e | 45.61 | h | 61.85 | a | ||
1985 | 37.88 | j | 42.05 | g | 55.06 | f | 64.83 | f | 70.19 | b | 75.76 | a | 78.59 | d | 80.02 | a | 70.14 | a | 59.60 | a | 54.07 | 44.96 | c | 66.67 | d | |
1986 | 48.38 | b | 51.56 | d | 58.00 | e | 66.35 | c | 69.53 | b | 71.81 | a | 76.81 | 75.59 | c | 70.02 | 59.05 | c | 48.96 | c | 42.48 | a | 61.55 | |||
1987 | 43.17 | e | 47.69 | b | 49.73 | a | 58.26 | a | 66.30 | a | 73.33 | c | 77.38 | a | 76.89 | 70.02 | a | 64.10 | e | 52.83 | a | 44.80 | a | 60.38 | ||
1988 | 40.61 | 46.43 | 54.16 | 61.61 | b | 68.57 | a | 76.75 | 76.11 | 74.82 | c | 71.88 | a | 64.20 | a | 57.84 | a | 44.30 | f | 63.00 | a | |||||
1989 | 48.02 | e | 45.14 | 58.11 | d | 64.37 | 73.20 | a | 75.78 | a | 78.42 | a | 75.98 | 68.13 | 65.11 | 55.77 | 40.60 | 62.39 | ||||||||
1990 | 47.32 | 51.76 | a | 52.38 | b | 60.77 | 69.84 | 83.47 | 74.58 | 73.74 | 71.25 | 61.94 | 55.85 | 48.25 | c | 62.60 | ||||||||||
1991 | 40.31 | b | 50.22 | a | 55.52 | 63.29 | a | 71.45 | a | 76.79 | a | 74.02 | e | 74.87 | 66.69 | i | 64.62 | a | 48.88 | e | 45.22 | f | 62.00 | b | ||
1992 | 41.79 | g | 49.05 | a | 56.43 | a | 61.91 | a | 66.52 | b | 74.33 | 78.13 | 75.61 | 74.15 | 66.70 | a | 47.95 | a | 45.73 | a | 63.32 | a | ||||
1993 | 45.29 | e | 45.53 | j | 56.58 | e | 62.75 | b | 71.12 | a | 77.73 | 79.97 | a | 79.18 | a | 72.84 | e | 61.92 | f | 48.65 | f | 49.43 | d | 66.10 | c | |
1994 | 46.27 | a | 49.17 | g | 55.39 | c | 63.33 | a | 69.29 | b | 84.09 | a | 82.63 | 80.05 | a | 73.75 | b | 65.85 | d | 55.44 | c | 50.78 | a | 66.08 | a | |
1995 | 47.08 | a | 54.02 | 55.43 | c | 59.22 | a | 70.36 | b | 75.18 | 80.55 | 77.82 | 69.76 | a | 65.66 | b | 55.30 | c | 47.17 | a | 63.13 | |||||
1996 | 47.21 | 51.24 | 51.47 | a | 62.73 | b | 79.52 | 79.12 | 78.19 | 75.37 | 68.21 | a | 62.81 | b | 53.32 | b | 51.07 | c | 63.35 | |||||||
1997 | 41.77 | 43.35 | b | 56.78 | a | 55.72 | 67.60 | 76.38 | b | 80.02 | a | 79.10 | a | 74.09 | b | 62.28 | a | 51.50 | 41.92 | a | 60.87 | |||||
1998 | 49.71 | 47.31 | a | 52.23 | 59.75 | 75.78 | a | 83.05 | a | 80.62 | f | 76.93 | a | 76.53 | a | 64.55 | b | 55.52 | a | 45.03 | a | 62.40 | a | |||
1999 | 49.47 | 55.37 | a | 54.78 | d | 63.70 | c | 71.53 | a | 76.70 | b | 78.70 | a | 82.16 | i | 72.30 | b | 65.50 | b | 59.80 | b | 46.66 | c | 63.14 | a | |
2000 | 50.41 | c | 55.35 | f | 58.09 | b | 65.45 | b | 77.43 | h | 75.74 | e | 81.79 | e | 80.90 | b | 75.26 | c | 61.54 | c | 48.12 | b | 45.54 | d | 64.28 | b |
2001 | 41.90 | e | 48.12 | g | 51.92 | g | ----- | z | 75.81 | m | 81.73 | b | 83.20 | a | 79.40 | 73.28 | a | 66.30 | c | 54.00 | b | 46.68 | c | 65.81 | d | |
2002 | 48.24 | b | 45.50 | b | 52.77 | a | 66.67 | f | 73.68 | i | 81.50 | b | 79.38 | a | 80.58 | 74.24 | c | 60.43 | c | 51.33 | 46.05 | a | 62.00 | b | ||
2003 | 48.37 | 47.02 | e | 56.48 | c | 65.52 | c | 72.74 | d | 77.28 | e | 80.91 | i | 80.15 | d | 73.12 | f | 67.77 | g | 55.96 | b | 49.07 | d | 61.40 | c | |
2004 | 46.33 | d | 44.38 | d | 58.36 | c | 61.68 | e | 72.80 | f | 77.75 | h | 76.18 | n | 76.05 | k | 70.58 | k | 62.34 | i | 48.98 | i | 45.83 | g | 52.69 | h |
2005 | 48.06 | e | 45.43 | g | 54.21 | j | 60.60 | t | 67.34 | l | 81.00 | w | 80.58 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 64.32 | j | |
2006 | ----- | z | 53.92 | d | 55.15 | ----- | z | 75.50 | a | 80.62 | d | 80.41 | d | ----- | z | 69.33 | a | 62.84 | 59.02 | a | 45.77 | c | 64.73 | c | ||
2007 | 39.22 | a | ----- | z | 59.09 | b | 60.41 | b | 67.89 | d | ----- | z | 78.13 | a | 79.55 | a | ----- | z | ----- | z | 55.70 | e | ----- | z | 62.86 | e |
2008 | ----- | z | ----- | z | 54.91 | b | 64.55 | 71.52 | c | 82.12 | b | 76.60 | a | 76.56 | 68.71 | a | 64.88 | a | 54.67 | a | 44.71 | j | 68.28 | c | ||
2009 | 48.17 | h | 54.37 | a | 57.26 | 63.18 | 71.38 | b | 79.13 | 79.74 | 79.56 | 70.35 | 62.68 | 55.64 | a | 41.25 | a | 64.96 | a | |||||||
2010 | 42.41 | b | 44.13 | b | 52.10 | a | 62.43 | 71.29 | 82.67 | 75.52 | 79.69 | 74.93 | 66.97 | 56.25 | 51.39 | 63.32 | ||||||||||
2011 | 46.68 | 47.80 | 63.42 | 70.98 | 73.40 | 86.83 | c | 84.06 | 84.79 | 75.55 | b | 65.42 | 55.47 | 38.82 | 66.10 | |||||||||||
2012 | 48.95 | 47.26 | 59.42 | 67.90 | 72.37 | 82.25 | 78.82 | a | 85.83 | s | 72.04 | e | 64.71 | n | 58.37 | 53.71 | x | 65.26 | c | |||||||
2013 | 48.12 | w | ----- | z | 52.35 | u | 63.67 | 71.95 | 82.56 | e | 77.39 | 79.76 | 75.50 | l | 63.12 | b | 53.41 | b | 45.17 | d | 67.13 | d | ||||
2014 | 44.83 | b | 48.62 | 52.05 | t | 62.66 | e | 70.24 | 80.40 | 79.40 | e | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 64.36 | f | |||
2015 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2016 | ----- | z | ----- | z | 58.30 | p | 62.29 | d | 69.35 | 79.08 | 84.71 | 75.92 | 70.47 | 68.26 | 56.35 | 46.08 | 68.06 | c | ||||||||
2017 | 45.65 | 54.61 | 60.95 | 64.32 | 68.69 | 79.67 | 79.27 | 75.15 | 73.12 | 64.84 | c | 57.82 | 48.68 | 64.40 | ||||||||||||
2018 | 44.63 | 48.43 | 58.92 | 64.03 | 77.65 | 82.12 | 82.29 | j | 79.50 | 70.65 | 59.90 | 50.03 | 45.61 | l | 63.59 | b | ||||||||||
2019 | 44.63 | 49.87 | a | 51.69 | 64.97 | 68.82 | 76.87 | 81.24 | 84.37 | 76.72 | 58.82 | 51.57 | 48.90 | 63.21 | ||||||||||||
2020 | 47.84 | 46.03 | 56.29 | 62.15 | 75.75 | i | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 53.08 | h | ||||
2021 | ----- | z | ----- | z | ----- | z | ----- | z | 70.55 | 79.00 | o | 76.03 | 76.75 | q | ----- | z | ----- | z | ----- | z | ----- | z | 73.29 | j | ||
2022 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 74.22 | g | 62.10 | 49.10 | 46.60 | 52.60 | i | |||
2023 | 48.02 | 46.93 | 56.44 | 62.67 | 71.24 | ----- | z | 85.15 | 82.29 | 78.78 | 65.74 | 54.00 | 50.16 | 63.76 | a | |||||||||||
2024 | 43.84 | 53.26 | 59.81 | w | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 48.55 | j | ||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 45.15 | 48.61 | 54.86 | 62.99 | 70.63 | 78.07 | 78.73 | 77.81 | 71.95 | 63.59 | 53.64 | 46.89 | 62.76 | |||||||||||||
S.D. | 3.93 | 3.57 | 3.42 | 2.98 | 2.49 | 2.99 | 2.59 | 2.70 | 3.01 | 2.99 | 3.37 | 3.35 | 1.47 | |||||||||||||
SKEW | -0.11 | 0.34 | -0.18 | 0.31 | 0.69 | 0.42 | 0.07 | 0.02 | -0.08 | -0.31 | -0.24 | -0.46 | 0.34 | |||||||||||||
MAX | 54.47 | 56.29 | 63.42 | 71.15 | 79.52 | 86.83 | 85.15 | 84.79 | 78.78 | 69.52 | 60.52 | 52.32 | 66.10 | |||||||||||||
MIN | 35.23 | 41.65 | 44.98 | 55.72 | 65.48 | 71.81 | 71.33 | 71.10 | 62.72 | 56.08 | 45.27 | 38.82 | 59.94 | |||||||||||||
YRS | 76 | 72 | 78 | 79 | 81 | 80 | 81 | 78 | 75 | 78 | 74 | 72 | 42 |