YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1931 | 30.77 | e | 33.30 | 42.32 | a | 51.97 | 62.89 | 66.32 | 74.53 | a | 72.34 | 61.65 | 49.78 | a | 34.16 | a | 24.47 | 50.37 | ||||||||
1932 | 21.98 | 25.27 | a | 41.47 | 53.22 | 58.55 | 68.07 | 69.10 | 69.63 | a | 61.85 | 50.77 | 39.61 | b | 24.87 | a | 48.70 | |||||||||
1933 | 28.90 | 23.16 | 41.20 | a | 51.48 | 54.94 | 64.87 | 72.29 | 71.94 | 58.63 | 51.79 | 41.73 | 34.16 | 49.59 | ||||||||||||
1934 | 33.37 | a | 38.79 | 48.10 | 58.47 | 62.15 | 67.73 | 71.69 | 72.66 | 61.09 | a | 52.56 | 42.00 | 32.85 | 53.45 | |||||||||||
1935 | 25.78 | b | 34.75 | 40.02 | 48.53 | 59.29 | 65.65 | 71.73 | 68.68 | 65.77 | 50.10 | 33.12 | a | 30.18 | 49.47 | |||||||||||
1936 | 28.50 | a | 15.35 | f | 40.97 | 53.47 | 62.95 | 66.09 | a | 73.00 | 73.27 | a | 62.35 | 54.96 | c | 33.65 | 31.53 | 52.79 | a | |||||||
1937 | 10.59 | b | 22.91 | 41.90 | 49.27 | 58.87 | 65.08 | 74.97 | 68.05 | 65.02 | a | 53.65 | a | 40.13 | 32.87 | 48.61 | ||||||||||
1938 | 31.05 | 30.79 | 41.26 | 52.67 | 60.39 | 69.17 | 76.16 | 69.66 | 67.97 | 52.32 | 36.78 | 30.58 | 51.57 | |||||||||||||
1939 | 32.80 | a | 30.00 | 43.37 | 54.80 | 61.34 | 65.67 | 74.69 | 73.95 | 64.95 | 53.45 | 38.88 | d | 35.76 | 52.47 | |||||||||||
1940 | 29.48 | 34.57 | 47.79 | 53.93 | 62.73 | 70.63 | 75.06 | 73.27 | 68.07 | 53.69 | 33.55 | 31.55 | a | 52.86 | ||||||||||||
1941 | 31.74 | 36.66 | 47.63 | 55.37 | 60.06 | 66.90 | 78.29 | 71.40 | 59.30 | 52.05 | 41.30 | 33.42 | 52.84 | |||||||||||||
1942 | 25.65 | 34.43 | 42.87 | 54.25 | 57.97 | 64.12 | 75.23 | 75.35 | 66.72 | 53.05 | 36.33 | 29.88 | a | 51.32 | ||||||||||||
1943 | 19.69 | 33.14 | 40.55 | 54.37 | 57.74 | 63.27 | 73.90 | 70.53 | 65.68 | 51.26 | 39.72 | 31.53 | 50.12 | |||||||||||||
1944 | 27.89 | 34.16 | 42.39 | 52.62 | b | 63.13 | 70.35 | 75.79 | 70.69 | 65.93 | 54.79 | 39.90 | f | 26.84 | c | 53.14 | a | |||||||||
1945 | 32.52 | 37.07 | 41.74 | 49.93 | a | 61.20 | a | 66.00 | 74.79 | 73.26 | 61.02 | 52.39 | i | 34.93 | a | 30.73 | 51.20 | a | ||||||||
1946 | 29.35 | 32.65 | d | 43.89 | 51.78 | 62.90 | 64.52 | d | 73.24 | f | 72.57 | h | 59.86 | h | 47.70 | a | 31.75 | j | 31.34 | 45.52 | d | |||||
1947 | 25.07 | a | 32.57 | 45.06 | f | 54.39 | b | 65.00 | a | 65.19 | c | 73.58 | k | 70.19 | 63.95 | 50.85 | 40.77 | d | 33.41 | c | 50.14 | b | ||||
1948 | 26.40 | a | 30.21 | j | 41.75 | i | 42.93 | p | 56.37 | 72.69 | a | 70.18 | 69.35 | 61.48 | 48.27 | 38.20 | 23.34 | 51.81 | c | |||||||
1949 | 10.66 | 25.48 | 42.81 | 53.72 | 63.48 | 65.40 | 71.90 | 71.98 | 63.88 | 48.16 | 43.65 | 33.55 | 49.56 | |||||||||||||
1950 | 9.84 | 27.48 | 40.56 | 48.60 | 58.13 | 64.93 | 73.31 | 73.32 | 65.32 | 48.42 | 38.42 | 35.06 | 48.62 | |||||||||||||
1951 | 29.15 | 32.34 | 38.29 | 53.08 | 59.97 | 67.62 | 73.77 | 72.79 | 63.72 | 49.02 | 36.62 | 25.98 | a | 50.19 | ||||||||||||
1952 | 19.21 | 30.66 | a | 41.74 | 53.12 | 60.35 | 65.20 | 72.89 | 72.45 | 65.82 | 55.10 | 35.97 | 33.21 | 50.48 | ||||||||||||
1953 | 35.81 | 39.84 | 44.81 | 49.57 | 57.84 | 61.43 | 71.19 | 70.10 | a | 63.87 | 52.27 | 41.97 | 37.89 | 52.21 | ||||||||||||
1954 | 25.60 | 35.64 | 39.79 | 49.57 | a | 60.50 | 63.68 | 70.53 | 68.23 | 62.52 | 48.16 | 44.20 | 31.52 | 49.99 | ||||||||||||
1955 | 29.56 | 32.61 | 36.45 | 46.37 | 55.98 | 67.31 | a | 69.27 | 71.47 | 63.47 | 49.74 | 30.62 | 24.70 | a | 48.13 | |||||||||||
1956 | 27.87 | 21.57 | 38.94 | 54.22 | 62.34 | 62.95 | b | 72.42 | l | 71.84 | 61.93 | a | 48.90 | 36.12 | 31.79 | 47.13 | a | |||||||||
1957 | 17.23 | 28.34 | 41.20 | a | 53.43 | 64.77 | 67.73 | 71.06 | 69.10 | 66.05 | 48.35 | 38.50 | 35.76 | 50.13 | ||||||||||||
1958 | 33.97 | a | 41.84 | 42.13 | 50.30 | 66.76 | 71.60 | 78.03 | 76.94 | 62.48 | 51.94 | 35.88 | 33.11 | 53.75 | ||||||||||||
1959 | 30.16 | 32.20 | 43.35 | 52.40 | 57.16 | 66.15 | 72.68 | 69.82 | 59.87 | 50.26 | 35.52 | a | 33.37 | 50.24 | ||||||||||||
1960 | 24.76 | 35.21 | 42.13 | 50.73 | 56.84 | 66.57 | 77.66 | 69.60 | 62.70 | 52.60 | 37.80 | 28.15 | 50.39 | |||||||||||||
1961 | 30.74 | 39.16 | 43.19 | 51.75 | 58.82 | 70.29 | a | 75.37 | 77.02 | 61.38 | 49.48 | 33.82 | 30.10 | 51.76 | ||||||||||||
1962 | 26.30 | a | 35.12 | 39.98 | 53.82 | 56.24 | 66.17 | 72.50 | 69.77 | 64.15 | 51.42 | 41.13 | 35.55 | 51.01 | ||||||||||||
1963 | 26.02 | 37.87 | a | 45.89 | 49.57 | 59.71 | 67.13 | 70.44 | 73.05 | 68.18 | 54.47 | 40.62 | 30.89 | 51.99 | ||||||||||||
1964 | 32.35 | 35.83 | 43.10 | 50.50 | 58.16 | 65.97 | 72.32 | 68.13 | 61.02 | 51.11 | 38.93 | 27.10 | a | 50.38 | ||||||||||||
1965 | 30.06 | 37.77 | 41.48 | 53.35 | 59.52 | 67.92 | 73.71 | 72.19 | 61.93 | 53.55 | 42.73 | 31.50 | 52.14 | |||||||||||||
1966 | 26.98 | 35.71 | 42.44 | 53.58 | 61.77 | 63.83 | 71.10 | 72.48 | 66.93 | 50.76 | 42.43 | 36.66 | 52.06 | |||||||||||||
1967 | 36.39 | 40.46 | 43.11 | 47.47 | 58.94 | 69.80 | 75.06 | 77.27 | 69.07 | 51.15 | 40.88 | 30.35 | 53.33 | |||||||||||||
1968 | 30.76 | 37.17 | 46.53 | 51.30 | 60.61 | 67.37 | 76.18 | 69.74 | 65.23 | 49.13 | 40.70 | 27.94 | 51.89 | |||||||||||||
1969 | 17.71 | 28.46 | 42.03 | 52.63 | 63.92 | 73.02 | 73.58 | 71.95 | 64.45 | 50.66 | 40.62 | 33.27 | 51.03 | |||||||||||||
1970 | 28.02 | 37.54 | 44.27 | 49.45 | 61.65 | 72.35 | 76.84 | 74.53 | 61.13 | 49.76 | 38.33 | 27.32 | 51.77 | |||||||||||||
1971 | 29.71 | 36.71 | ----- | z | 50.73 | 62.71 | 64.08 | 75.08 | 77.97 | 59.35 | 50.18 | 40.05 | 25.95 | 52.05 | a | |||||||||||
1972 | 25.45 | ----- | z | 45.94 | 48.48 | 62.11 | 68.03 | 71.73 | 73.55 | 58.87 | 49.84 | 40.28 | 27.55 | 51.98 | a | |||||||||||
1973 | 27.90 | 36.71 | 46.76 | 53.75 | 61.12 | a | 66.62 | 75.35 | 72.76 | 64.72 | 51.82 | 35.95 | 35.90 | 52.45 | ||||||||||||
1974 | 28.32 | a | 39.80 | 44.52 | 52.73 | 57.24 | 70.10 | a | 71.85 | a | 73.58 | 64.08 | 51.24 | 42.30 | 36.32 | 52.67 | ||||||||||
1975 | 30.21 | 31.27 | 40.89 | 49.40 | 59.82 | 66.02 | 76.82 | 69.50 | 64.53 | a | 51.29 | 39.18 | 33.69 | 51.05 | ||||||||||||
1976 | 30.97 | 36.73 | a | 41.32 | 51.58 | 60.42 | 64.20 | 72.92 | a | 69.81 | 67.15 | 51.50 | 39.93 | 33.34 | 51.66 | |||||||||||
1977 | 26.63 | 39.27 | 45.47 | 57.22 | 55.89 | 71.10 | 73.16 | 76.87 | 61.00 | 50.79 | 37.40 | 32.00 | 52.23 | |||||||||||||
1978 | 32.13 | 36.71 | 46.23 | 51.90 | 58.69 | 69.83 | a | 75.10 | 71.02 | 62.08 | 52.40 | 35.05 | 27.37 | a | 51.54 | |||||||||||
1979 | 18.47 | 31.04 | 44.81 | 52.08 | 62.89 | 70.53 | 78.00 | e | 74.56 | 67.37 | 56.27 | 36.70 | 35.97 | 52.39 | ||||||||||||
1980 | 22.63 | 32.93 | 43.47 | 56.12 | 61.91 | d | 65.22 | a | 74.73 | 70.27 | 64.82 | 52.84 | 41.25 | 33.55 | c | 51.64 | ||||||||||
1981 | 38.73 | 37.95 | 48.52 | 52.12 | 60.63 | 64.58 | 72.10 | 77.06 | 65.07 | 50.90 | 42.28 | 32.25 | a | 53.52 | ||||||||||||
1982 | 27.95 | a | 35.75 | b | 44.45 | a | 49.66 | a | 59.89 | 70.41 | b | 73.23 | c | 73.23 | c | 64.18 | e | 52.30 | c | 36.38 | b | 31.28 | b | 51.56 | ||
1983 | 35.88 | a | 39.20 | 47.79 | 52.65 | 64.63 | d | 67.07 | 70.32 | a | 75.32 | c | 62.05 | a | 53.30 | a | 42.37 | 22.71 | 52.77 | |||||||
1984 | 32.39 | 38.25 | e | 47.42 | 50.52 | 57.43 | d | 65.68 | 73.32 | 73.90 | 60.45 | 49.53 | a | 38.53 | 22.32 | a | 50.81 | |||||||||
1985 | 27.66 | 29.23 | 43.63 | 54.10 | 62.45 | 68.67 | 79.50 | b | 71.93 | a | 61.27 | 53.00 | b | 28.87 | 24.26 | 50.38 | ||||||||||
1986 | 31.68 | 35.24 | c | 48.50 | b | 52.30 | 61.37 | 73.02 | 71.44 | 78.26 | 60.58 | 53.79 | 41.14 | a | 32.11 | 53.29 | ||||||||||
1987 | 29.39 | 38.45 | 45.50 | 55.93 | 63.06 | 69.55 | 73.32 | a | 72.85 | 68.37 | 54.44 | 43.75 | 29.63 | 53.69 | ||||||||||||
1988 | 28.71 | 37.24 | 45.53 | 54.05 | 59.68 | a | 66.10 | 74.18 | 73.13 | 64.30 | 57.27 | 41.63 | 30.77 | 52.72 | ||||||||||||
1989 | 31.87 | 26.88 | 41.03 | b | 54.18 | 61.87 | 71.10 | 74.85 | 73.37 | 66.83 | 53.30 | a | 43.23 | 34.55 | 52.76 | |||||||||||
1990 | 36.79 | b | 33.84 | 46.47 | 57.87 | 60.80 | f | 70.50 | m | 78.12 | a | 74.77 | 69.92 | 51.84 | 45.38 | 26.34 | 52.13 | b | ||||||||
1991 | 27.96 | d | 41.42 | b | 42.44 | 52.52 | 59.29 | 64.95 | 74.56 | f | 73.57 | a | 67.58 | 52.34 | 39.69 | a | 36.05 | 50.71 | a | |||||||
1992 | 35.29 | 40.26 | 49.58 | 54.05 | 64.15 | a | 73.62 | 73.92 | 75.11 | 62.58 | 53.44 | 40.28 | a | 26.25 | a | 54.04 | ||||||||||
1993 | 22.79 | 30.71 | 40.76 | 50.03 | 64.95 | a | 66.22 | a | 68.97 | 71.75 | a | 64.63 | 53.76 | 35.12 | a | 33.19 | 50.24 | |||||||||
1994 | 36.10 | a | 34.43 | 47.24 | 55.92 | 62.60 | 67.57 | a | 77.74 | 73.82 | 68.35 | 51.85 | a | 36.24 | a | 32.00 | c | 53.65 | ||||||||
1995 | 30.34 | b | 37.86 | 42.63 | a | 51.45 | 62.88 | a | 67.10 | 74.32 | 68.69 | 67.72 | a | 50.87 | 40.12 | 32.97 | 52.25 | |||||||||
1996 | 26.60 | b | 30.52 | 42.95 | a | 51.88 | 56.27 | 66.37 | 75.94 | 73.19 | 62.42 | 50.35 | 36.36 | a | 24.77 | 49.80 | ||||||||||
1997 | 27.19 | b | 33.48 | 42.81 | 50.53 | 62.08 | a | 65.83 | 72.29 | 74.48 | 64.16 | a | 50.92 | a | 40.82 | 33.39 | 51.50 | |||||||||
1998 | 30.10 | b | 39.64 | 46.22 | b | 52.36 | a | 61.52 | 68.38 | 78.43 | b | 75.26 | 70.43 | 51.98 | 42.78 | 30.45 | 53.96 | |||||||||
1999 | 34.82 | 37.64 | 43.05 | a | 50.97 | a | 57.24 | 65.68 | b | 71.73 | 74.65 | a | 63.50 | 50.66 | 43.10 | d | 37.43 | b | 52.54 | |||||||
2000 | 30.11 | 35.04 | a | 44.32 | c | 55.55 | a | 60.53 | b | 67.47 | a | 72.92 | a | 73.62 | a | 64.29 | a | 51.69 | b | 35.12 | 29.79 | 51.70 | ||||
2001 | 31.85 | 32.76 | a | 45.02 | a | 51.55 | a | 61.40 | 64.63 | 73.65 | a | 73.79 | 66.65 | 51.39 | 41.82 | b | 34.08 | 52.38 | ||||||||
2002 | 34.53 | 36.54 | a | 41.26 | 52.54 | c | 58.38 | a | 69.53 | 76.18 | 73.76 | b | 64.90 | 51.55 | 40.33 | a | 35.95 | b | 52.95 | |||||||
2003 | 35.12 | a | 38.07 | 45.32 | 51.60 | 59.68 | 71.10 | 77.90 | 75.59 | b | 67.50 | 56.19 | 35.39 | c | 31.62 | a | 53.76 | |||||||||
2004 | 29.03 | 35.45 | 48.08 | 55.48 | a | 61.55 | 70.68 | 78.08 | 77.15 | a | 64.08 | 54.02 | 39.91 | a | 35.11 | 54.05 | ||||||||||
2005 | 29.13 | 37.96 | ----- | z | 53.00 | b | 62.78 | a | 67.18 | 75.95 | 76.77 | a | 64.62 | 53.95 | ----- | z | 27.35 | 54.87 | b | |||||||
2006 | 35.20 | a | 34.93 | a | 43.03 | a | 51.98 | b | 60.95 | 69.37 | 78.65 | 74.63 | a | 66.17 | 53.78 | a | 37.22 | 28.47 | 52.86 | |||||||
2007 | 27.61 | 36.34 | 45.21 | b | 52.22 | a | 61.35 | k | 65.98 | d | 77.98 | c | 72.85 | 65.70 | 50.89 | d | 39.57 | 29.62 | a | 51.27 | a | |||||
2008 | 24.05 | 36.47 | 42.69 | 47.87 | 62.35 | 66.55 | 75.26 | 73.29 | 64.75 | 51.10 | 41.48 | 24.16 | 50.83 | |||||||||||||
2009 | 28.06 | 34.20 | 40.32 | 51.47 | 60.55 | 69.65 | 77.23 | 75.18 | 66.77 | 48.31 | 41.10 | a | 26.03 | 51.57 | ||||||||||||
2010 | 34.56 | 39.39 | 45.65 | 51.05 | 56.63 | 64.72 | 74.74 | 72.94 | 63.40 | 53.79 | 36.93 | 31.92 | 52.14 | |||||||||||||
2011 | 31.19 | 33.20 | 41.35 | 47.45 | 56.66 | 64.55 | 70.05 | 75.34 | 67.75 | 52.31 | 37.42 | 30.98 | 50.69 | |||||||||||||
2012 | 28.61 | 36.02 | 42.11 | 52.18 | 59.89 | 64.25 | 77.11 | 77.03 | 66.13 | 52.26 | 41.73 | 34.21 | 52.63 | |||||||||||||
2013 | 28.35 | 37.89 | 44.17 | e | 52.40 | 61.90 | a | 67.53 | 78.85 | 75.31 | 67.95 | 51.97 | 40.57 | 29.82 | 53.06 | |||||||||||
2014 | 35.79 | 32.23 | 43.05 | 52.25 | 62.82 | 68.37 | 78.52 | 76.39 | 66.30 | 56.58 | 39.12 | 34.50 | 53.83 | |||||||||||||
2015 | 32.52 | 41.50 | 49.21 | 52.05 | 64.56 | 75.98 | 78.66 | 76.05 | 63.18 | 56.81 | 39.75 | 31.82 | 55.17 | |||||||||||||
2016 | 31.55 | 39.03 | 45.26 | 59.02 | 63.61 | 69.02 | 73.66 | 75.00 | 64.05 | a | 51.31 | 46.70 | 26.60 | 53.73 | ||||||||||||
2017 | 22.81 | 29.07 | 41.89 | 50.40 | 61.13 | 68.18 | 77.71 | 77.42 | 65.87 | 50.60 | 39.75 | 30.52 | 51.28 | |||||||||||||
2018 | 34.42 | 36.07 | 42.95 | 51.13 | 67.26 | f | 66.97 | 77.06 | 74.97 | 64.35 | 51.82 | 40.72 | 35.21 | 52.33 | a | |||||||||||
2019 | 33.44 | 25.61 | a | 38.03 | a | 53.41 | c | 62.96 | c | 68.08 | 72.37 | 74.69 | 64.13 | 47.55 | 39.05 | 33.24 | 51.05 | |||||||||
2020 | 33.44 | 38.86 | 44.02 | 52.72 | 61.31 | 67.57 | 74.26 | 75.30 | a | 66.83 | 54.16 | 39.43 | 33.55 | 53.45 | ||||||||||||
2021 | 34.82 | 33.77 | 44.95 | 53.72 | 60.74 | 73.70 | 81.08 | 75.68 | 64.82 | 51.57 | a | 41.98 | 30.89 | 53.98 | ||||||||||||
2022 | 27.68 | 34.67 | b | 46.20 | a | 46.95 | 55.95 | 66.05 | 77.02 | c | 79.45 | 68.85 | 60.66 | f | 34.17 | 22.82 | c | 50.89 | a | |||||||
2023 | 32.60 | 34.71 | 41.03 | 49.98 | 67.71 | 71.20 | 78.23 | 75.41 | d | 65.42 | 54.47 | a | 39.82 | 36.52 | 53.92 | |||||||||||
2024 | 29.02 | 39.48 | 46.35 | a | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 38.28 | i | ||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 28.84 | 34.63 | 43.55 | 52.22 | 60.68 | 67.53 | 74.52 | 73.26 | 64.45 | 51.84 | 39.06 | 31.00 | 51.83 | |||||||||||||
S.D. | 5.52 | 4.38 | 2.69 | 2.44 | 2.64 | 2.78 | 2.74 | 2.63 | 2.63 | 2.13 | 3.23 | 3.80 | 1.53 | |||||||||||||
SKEW | -1.29 | -0.89 | 0.11 | 0.17 | -0.03 | 0.60 | 0.06 | -0.07 | -0.08 | 0.25 | -0.51 | -0.48 | -0.29 | |||||||||||||
MAX | 38.73 | 41.84 | 49.58 | 59.02 | 67.71 | 75.98 | 81.08 | 79.45 | 70.43 | 57.27 | 46.70 | 37.89 | 55.17 | |||||||||||||
MIN | 9.84 | 21.57 | 36.45 | 46.37 | 54.94 | 61.43 | 68.97 | 68.05 | 58.63 | 47.55 | 28.87 | 22.32 | 48.13 | |||||||||||||
YRS | 94 | 91 | 90 | 92 | 90 | 92 | 89 | 92 | 92 | 91 | 90 | 93 | 78 |