YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1936 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1937 | 8.93 | h | 13.76 | c | 33.72 | a | 49.38 | a | 64.68 | 72.03 | 79.73 | a | 78.98 | 65.60 | 47.58 | 32.05 | b | 18.23 | e | 50.52 | a | |||||
1938 | 15.88 | b | 23.52 | c | 38.02 | b | 47.48 | 59.48 | 70.23 | 76.03 | 75.35 | 62.48 | 54.06 | 34.58 | d | 25.08 | a | 48.52 | ||||||||
1939 | 23.40 | g | 14.32 | 35.78 | f | 44.58 | 68.47 | 75.42 | 77.90 | 74.41 | b | 67.75 | 52.15 | 39.72 | 32.39 | 54.71 | b | |||||||||
1940 | 12.39 | 25.03 | 29.08 | 46.80 | 59.63 | a | 71.35 | 76.92 | 70.69 | 66.53 | 56.23 | 33.42 | 26.39 | 47.87 | ||||||||||||
1941 | 22.66 | 20.91 | 32.09 | b | 56.61 | l | 64.74 | 69.42 | 74.61 | 72.63 | 66.38 | a | 53.40 | 39.71 | a | 29.16 | 49.61 | a | ||||||||
1942 | 21.19 | ----- | z | 36.40 | b | 60.20 | o | 57.77 | 68.78 | a | 73.02 | 71.79 | 59.71 | a | 52.83 | b | 36.38 | 18.02 | 49.59 | b | ||||||
1943 | 11.23 | a | 20.42 | b | 26.19 | 48.68 | p | 56.98 | a | 73.12 | a | 75.27 | 72.98 | 59.31 | a | 50.35 | 32.15 | 25.21 | 45.75 | a | ||||||
1944 | 27.18 | 23.91 | 27.19 | d | 48.00 | p | 63.74 | 71.36 | a | 71.16 | 72.92 | a | 64.57 | 52.95 | ----- | z | ----- | z | 52.78 | c | ||||||
1945 | ----- | z | ----- | z | ----- | z | 45.06 | n | 54.19 | b | 63.24 | c | 71.47 | 70.97 | 61.68 | b | 51.00 | b | ----- | z | ----- | z | 62.09 | f | ||
1946 | ----- | z | ----- | z | ----- | z | 56.38 | n | 56.18 | a | 68.48 | a | 72.84 | 68.68 | a | 60.85 | 53.44 | d | ----- | z | ----- | z | 63.41 | f | ||
1947 | ----- | z | ----- | z | ----- | z | 46.38 | q | 53.08 | a | 63.91 | b | 72.13 | a | 77.08 | a | 64.03 | 59.97 | a | ----- | z | ----- | z | 65.04 | f | |
1948 | ----- | z | ----- | z | ----- | z | ----- | z | 58.47 | 68.50 | o | 74.98 | 73.06 | 67.50 | 49.81 | ----- | z | ----- | z | 64.76 | g | |||||
1949 | ----- | z | ----- | z | ----- | z | 47.98 | 62.34 | 72.28 | 76.08 | 72.29 | 58.20 | 53.10 | b | 37.83 | a | ----- | z | 60.01 | d | ||||||
1950 | 15.60 | 19.64 | 27.05 | 40.48 | 57.58 | 68.15 | 68.92 | 66.47 | 60.57 | 56.26 | 31.65 | 13.52 | a | 43.82 | ||||||||||||
1951 | 11.22 | a | 19.12 | 24.98 | 42.30 | 62.47 | 64.73 | 71.39 | 67.13 | 57.97 | 49.85 | 27.12 | 19.95 | a | 43.19 | |||||||||||
1952 | 17.52 | 25.69 | 28.70 | a | 48.84 | a | 58.47 | 70.47 | 73.77 | 68.95 | 62.82 | 45.97 | p | ----- | z | 25.23 | a | 48.05 | b | |||||||
1953 | 20.65 | a | 21.48 | 33.08 | 42.27 | 59.32 | a | 70.96 | b | 72.18 | 71.47 | 61.88 | 55.76 | 39.67 | 26.21 | 47.91 | ||||||||||
1954 | 15.44 | 32.77 | 31.35 | ----- | z | ----- | z | 71.45 | 73.53 | 69.53 | 61.43 | 48.61 | 38.13 | ----- | z | 49.14 | c | |||||||||
1955 | 17.12 | a | 18.09 | a | 28.32 | 53.07 | 61.19 | 65.67 | 76.85 | 74.74 | 62.55 | 50.85 | 29.03 | 14.82 | 46.03 | |||||||||||
1956 | 14.74 | 16.19 | 26.05 | 42.22 | 57.91 | h | 72.42 | 69.84 | 71.06 | 59.25 | 57.05 | 35.18 | 25.89 | 44.54 | a | |||||||||||
1957 | 13.15 | 24.82 | 32.37 | a | 47.95 | 57.63 | 68.37 | 75.84 | b | 69.37 | 59.60 | 48.00 | 34.52 | 26.31 | 46.49 | |||||||||||
1958 | 21.56 | 17.07 | a | 33.32 | 48.67 | 60.47 | a | 63.88 | 70.12 | b | 71.05 | 62.90 | 53.81 | 37.53 | 13.09 | i | 49.13 | a | ||||||||
1959 | 11.48 | f | 15.39 | 30.00 | 47.70 | 62.68 | 69.33 | 71.63 | 74.47 | 62.87 | 46.03 | 27.08 | 30.82 | 48.91 | a | |||||||||||
1960 | 21.89 | 22.48 | 22.45 | 48.75 | 58.98 | 64.95 | a | 71.97 | 72.16 | 63.88 | 50.98 | 38.75 | 21.69 | 46.58 | ||||||||||||
1961 | 16.65 | 26.84 | 34.19 | 41.27 | 56.77 | 69.62 | 71.68 | 72.63 | 61.67 | 52.52 | 35.58 | 19.39 | 46.57 | |||||||||||||
1962 | 13.52 | 17.30 | 28.87 | 45.52 | 63.95 | 67.55 | 69.24 | 69.29 | 59.05 | 53.69 | 36.52 | 21.44 | 45.49 | |||||||||||||
1963 | 5.84 | 15.23 | 34.94 | 48.75 | 57.08 | 71.17 | a | 73.66 | 68.87 | 62.82 | 60.47 | 40.67 | 13.29 | 46.07 | ||||||||||||
1964 | 23.69 | 27.05 | 31.40 | 48.53 | 64.40 | 69.18 | 76.18 | 69.63 | 61.27 | 49.84 | 38.15 | 17.62 | a | 48.08 | ||||||||||||
1965 | 12.50 | 15.18 | 23.35 | 43.55 | 63.24 | 67.37 | 71.89 | 69.23 | 57.45 | 51.60 | a | 36.50 | 30.05 | 45.16 | ||||||||||||
1966 | 7.10 | a | 18.79 | 36.42 | a | 44.55 | 55.48 | 69.75 | 74.00 | b | 69.11 | 61.53 | 50.39 | 34.82 | 21.90 | 45.32 | ||||||||||
1967 | 19.06 | 12.68 | 32.66 | 47.00 | a | 54.47 | 68.62 | 69.79 | 67.45 | 60.50 | 49.55 | 33.37 | 24.94 | 45.01 | ||||||||||||
1968 | 18.11 | 18.79 | 39.95 | 50.48 | 56.15 | 67.62 | 71.63 | 71.24 | 61.82 | 52.60 | 36.52 | 20.66 | 47.13 | |||||||||||||
1969 | 12.27 | 20.59 | 25.52 | 49.33 | 60.82 | 61.73 | 71.94 | 72.40 | 61.87 | 47.45 | a | 34.72 | 22.58 | 45.10 | ||||||||||||
1970 | 8.47 | 20.11 | 29.56 | 48.05 | 60.60 | a | 70.12 | 73.90 | 70.24 | 61.97 | 51.95 | 34.95 | 19.73 | 45.80 | ||||||||||||
1971 | 8.68 | 17.64 | 28.28 | a | 47.47 | 55.65 | 72.72 | 69.05 | 69.00 | 64.28 | 57.06 | 36.50 | 23.79 | 45.84 | ||||||||||||
1972 | 10.68 | 15.47 | 27.60 | 42.27 | 62.08 | 65.68 | 70.16 | 71.35 | 61.75 | 47.53 | 35.05 | 16.13 | 43.81 | |||||||||||||
1973 | 19.40 | 23.84 | 41.21 | 45.45 | 55.98 | 70.22 | 73.87 | 72.87 | 62.58 | 57.00 | 37.12 | 19.27 | 48.23 | |||||||||||||
1974 | 17.03 | 19.11 | 32.97 | a | 49.50 | 56.13 | 65.60 | 75.77 | 69.18 | 57.80 | 51.31 | 37.08 | 26.39 | 46.49 | ||||||||||||
1975 | 16.82 | 18.27 | 25.10 | 41.13 | 61.92 | 68.75 | 74.79 | 71.27 | 57.82 | 53.29 | 39.12 | 23.52 | 45.98 | |||||||||||||
1976 | 13.84 | 28.57 | 34.47 | 50.22 | 57.05 | 69.95 | 73.66 | 70.00 | 60.28 | 44.68 | a | 28.58 | 12.27 | 45.30 | ||||||||||||
1977 | 2.63 | ----- | z | 39.03 | 54.93 | 67.23 | 68.72 | 75.33 | a | 67.61 | 61.55 | 46.48 | 31.28 | 15.37 | 48.20 | a | ||||||||||
1978 | 4.60 | 8.96 | 27.73 | 45.77 | 59.50 | 67.13 | 70.63 | 70.19 | 66.90 | 51.05 | 33.78 | 17.47 | 43.64 | |||||||||||||
1979 | 1.84 | b | 10.59 | 30.03 | 43.03 | 57.05 | a | 67.47 | 71.53 | 69.11 | 63.98 | e | 47.17 | m | 33.42 | 26.50 | 43.14 | a | ||||||||
1980 | 15.98 | a | 14.97 | 27.23 | 47.83 | a | 60.93 | a | 67.97 | 73.82 | 69.98 | 62.35 | 46.22 | a | 37.48 | 21.19 | 45.50 | |||||||||
1981 | 19.53 | 24.43 | 37.18 | 50.68 | 56.47 | 67.65 | 70.63 | 68.94 | 60.27 | 47.98 | 37.40 | 19.52 | 46.72 | |||||||||||||
1982 | 6.62 | f | 16.81 | d | 30.43 | b | 43.50 | 62.23 | a | 63.05 | a | 73.21 | 69.47 | 58.89 | c | 49.47 | a | 32.67 | a | 27.21 | e | 47.90 | a | |||
1983 | 22.07 | c | 26.20 | a | 34.72 | a | 43.21 | a | 54.03 | b | 67.48 | a | 75.87 | 74.70 | a | 60.35 | c | 47.43 | c | 35.48 | a | 6.77 | a | 45.69 | ||
1984 | 12.20 | a | 27.97 | 26.13 | 46.90 | 55.04 | c | 69.03 | a | 69.26 | 70.45 | 57.48 | 49.85 | 32.16 | b | 21.66 | i | 46.95 | a | |||||||
1985 | 12.81 | g | 17.67 | b | 37.62 | g | 52.92 | 63.61 | c | 65.33 | c | 74.18 | a | 69.00 | a | 62.63 | 49.55 | b | 29.54 | b | 10.00 | a | 49.44 | b | ||
1986 | 17.59 | b | 17.63 | a | 35.84 | 51.88 | b | 61.16 | 69.12 | a | 74.41 | c | 66.88 | a | 62.02 | a | 50.81 | 31.16 | a | 25.16 | b | 46.97 | ||||
1987 | 21.21 | b | 29.87 | b | 38.38 | a | 53.75 | 63.68 | a | 72.16 | a | 75.98 | a | 69.35 | a | 62.67 | 45.87 | a | 39.88 | a | 27.50 | a | 50.02 | |||
1988 | 11.73 | c | 14.14 | d | 35.56 | d | 47.38 | 63.11 | 72.48 | 75.28 | a | 74.87 | 63.64 | b | 44.86 | b | 36.22 | c | 22.65 | a | 46.83 | |||||
1989 | 24.77 | a | 13.55 | 28.97 | a | 45.85 | 58.02 | 66.90 | 74.65 | 70.22 | d | 60.26 | a | 53.73 | c | 31.95 | a | 14.70 | i | 48.08 | a | |||||
1990 | 27.40 | a | 24.48 | 37.40 | 49.47 | 56.13 | 69.57 | c | ----- | z | 69.47 | 60.52 | 44.44 | 37.26 | a | 17.68 | a | 44.89 | a | |||||||
1991 | 13.27 | a | 24.59 | 35.37 | 50.27 | 62.29 | 72.52 | 72.00 | 71.15 | 59.48 | 48.95 | a | 26.98 | 22.98 | a | 46.65 | ||||||||||
1992 | 23.16 | 28.34 | 33.47 | 44.40 | 59.68 | 65.72 | 67.19 | 65.73 | 61.38 | 49.13 | 32.68 | 21.95 | 46.07 | |||||||||||||
1993 | 15.69 | 17.98 | 30.35 | 42.91 | b | 58.21 | 65.37 | 70.56 | 71.16 | 56.03 | 49.47 | 32.77 | 23.87 | a | 44.53 | |||||||||||
1994 | 6.21 | 13.68 | 34.74 | 48.37 | 60.03 | 71.07 | a | 69.69 | 67.53 | 64.58 | 52.79 | 39.75 | 26.02 | 46.21 | ||||||||||||
1995 | 19.32 | 21.61 | 35.57 | b | 43.84 | a | 57.39 | 72.18 | b | 73.63 | a | 76.15 | 60.15 | 49.80 | a | 27.86 | a | 19.65 | a | 46.43 | ||||||
1996 | 11.18 | 19.05 | 26.58 | 44.02 | 55.55 | 67.88 | 69.65 | 70.03 | 62.18 | 49.74 | 28.37 | 18.53 | 43.56 | |||||||||||||
1997 | 13.16 | 23.14 | 31.94 | 44.58 | 53.16 | 69.18 | 70.87 | 67.52 | 63.26 | a | 50.90 | 30.69 | a | 28.10 | a | 45.54 | ||||||||||
1998 | 21.35 | 32.95 | 33.02 | b | 52.21 | a | 65.58 | 66.59 | a | 73.61 | 71.34 | 67.12 | 52.42 | 38.53 | a | 29.21 | b | 50.33 | ||||||||
1999 | 12.48 | c | 29.39 | 35.93 | a | 51.48 | d | 62.86 | c | 68.79 | d | 77.84 | f | 69.83 | a | 61.43 | 50.29 | 43.07 | 26.43 | c | 46.54 | a | ||||
2000 | 17.62 | b | 30.02 | 41.37 | 48.70 | 60.98 | b | 66.57 | 71.60 | 71.23 | a | 61.61 | b | 53.79 | 34.22 | 9.72 | a | 47.28 | ||||||||
2001 | 21.77 | 17.33 | a | 29.85 | 50.91 | a | 60.90 | 67.88 | 73.54 | c | 73.15 | 60.67 | 49.13 | 48.13 | 29.94 | 48.60 | ||||||||||
2002 | 28.45 | a | 31.33 | a | 28.80 | a | 47.32 | 56.22 | a | 70.62 | 76.11 | c | 69.85 | a | 65.12 | a | 45.55 | 34.57 | 27.68 | 48.47 | ||||||
2003 | 17.60 | a | 18.27 | 32.95 | a | 48.02 | a | 58.07 | a | 66.75 | 72.15 | d | 73.98 | a | 62.93 | b | 50.63 | a | 34.62 | e | 27.00 | b | 46.91 | |||
2004 | 14.37 | 23.39 | a | 37.62 | a | 49.07 | c | 58.32 | c | ----- | z | 71.03 | b | 66.20 | a | 66.09 | b | 51.68 | a | 39.12 | b | 23.98 | 45.54 | a | ||
2005 | 16.82 | 28.74 | a | 32.15 | 51.74 | c | 56.35 | 72.84 | b | 74.32 | 71.03 | a | 66.52 | b | 53.03 | a | 37.93 | b | 19.76 | d | 48.44 | |||||
2006 | 30.84 | 23.70 | 35.03 | 52.32 | 59.17 | a | 68.40 | a | 76.47 | 71.52 | a | 59.30 | 46.82 | a | 38.48 | a | 30.32 | 49.36 | ||||||||
2007 | 22.98 | a | 14.27 | 37.23 | a | 46.37 | 63.77 | a | 70.26 | a | 73.15 | 72.06 | e | 65.84 | b | 56.74 | 36.15 | 19.52 | a | 48.19 | ||||||
2008 | 16.50 | b | 15.89 | a | 30.21 | 47.00 | b | 57.50 | a | 68.56 | c | 72.32 | 69.89 | 63.78 | 51.08 | 36.05 | a | 16.12 | b | 45.41 | ||||||
2009 | 8.79 | 23.66 | 35.22 | a | 48.32 | 59.85 | 67.73 | 67.74 | 68.97 | a | 64.22 | 45.08 | 43.27 | 20.55 | 46.12 | |||||||||||
2010 | 16.00 | b | 20.57 | 40.48 | 55.00 | 60.87 | 69.60 | a | 75.11 | 75.45 | b | 61.55 | 54.19 | 37.73 | 17.81 | 48.70 | ||||||||||
2011 | 15.33 | a | 20.98 | 32.67 | a | 46.47 | 59.00 | 69.42 | 77.38 | a | 72.27 | a | 60.85 | 53.27 | 40.76 | a | 28.89 | 48.11 | ||||||||
2012 | 25.10 | a | 29.55 | 50.17 | b | 51.05 | a | 64.38 | a | 71.53 | 78.93 | a | 71.32 | a | 62.33 | a | 48.48 | a | 39.10 | a | 27.00 | a | 51.58 | |||
2013 | 20.24 | 21.61 | 27.13 | e | 42.02 | b | 59.48 | 67.60 | 72.92 | 72.07 | a | 66.20 | b | 50.66 | 35.16 | b | 15.65 | a | 45.89 | |||||||
2014 | 9.87 | a | 9.07 | a | 27.90 | 45.48 | a | 59.91 | c | 70.95 | a | 70.44 | 72.37 | a | 62.55 | b | 50.57 | a | 28.60 | a | 26.66 | 44.53 | ||||
2015 | 19.74 | 12.00 | a | 34.55 | a | 51.03 | 62.21 | 70.23 | 72.84 | 70.88 | b | 69.28 | a | 53.23 | 43.95 | a | 33.80 | a | 49.48 | |||||||
2016 | 19.55 | a | 26.78 | 42.15 | 50.14 | a | 60.71 | 71.48 | 74.68 | 73.58 | 66.88 | 55.48 | 45.03 | 23.08 | 50.80 | |||||||||||
2017 | 21.92 | 32.23 | 35.85 | 51.60 | 58.27 | 71.05 | 74.68 | a | 69.53 | b | 67.63 | 53.79 | 36.35 | 22.02 | 49.58 | |||||||||||
2018 | 19.00 | 20.26 | a | 34.67 | a | 39.20 | 67.18 | 73.40 | 74.47 | 73.50 | a | 65.67 | a | 48.40 | b | 30.88 | 27.92 | 47.88 | ||||||||
2019 | 15.31 | 12.71 | 27.43 | a | 45.60 | a | 54.95 | 67.57 | b | 75.19 | 69.81 | 65.91 | b | 47.10 | a | 31.37 | c | 25.67 | b | 44.89 | ||||||
2020 | 22.90 | a | 20.41 | a | 37.08 | 44.48 | a | 58.94 | d | 70.14 | a | 75.19 | 72.08 | 60.52 | a | 45.20 | a | 41.45 | a | 26.52 | b | 47.91 | ||||
2021 | 22.23 | 11.96 | 40.15 | 47.48 | c | 58.62 | a | 74.20 | 73.58 | a | 72.05 | a | 64.31 | a | 56.28 | a | 36.61 | b | 27.14 | b | 48.72 | |||||
2022 | 9.94 | 15.78 | c | 32.86 | c | 41.45 | 58.91 | b | 70.15 | 73.32 | 71.10 | 64.67 | 49.72 | a | 37.73 | 19.27 | a | 45.41 | ||||||||
2023 | 24.00 | a | 23.30 | 31.90 | 45.62 | e | 60.50 | b | 71.00 | d | 71.60 | 72.32 | a | 66.25 | d | 53.19 | 38.89 | c | 33.68 | 49.35 | ||||||
2024 | 22.60 | 33.54 | b | 38.87 | d | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 31.67 | i | |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 16.67 | 20.81 | 32.68 | 47.27 | 59.63 | 69.02 | 73.18 | 71.02 | 62.47 | 51.05 | 35.63 | 22.67 | 46.81 | |||||||||||||
S.D. | 6.02 | 5.98 | 5.00 | 3.59 | 3.36 | 2.70 | 2.53 | 2.46 | 2.80 | 3.49 | 4.28 | 5.66 | 1.88 | |||||||||||||
SKEW | -0.20 | 0.23 | 0.45 | -0.04 | 0.31 | -0.31 | 0.03 | 0.47 | 0.17 | 0.27 | 0.09 | -0.44 | 0.33 | |||||||||||||
MAX | 30.84 | 33.54 | 50.17 | 55.00 | 68.47 | 75.42 | 79.73 | 78.98 | 69.28 | 60.47 | 48.13 | 33.80 | 51.58 | |||||||||||||
MIN | 1.84 | 8.96 | 22.45 | 39.20 | 53.08 | 61.73 | 67.19 | 65.73 | 56.03 | 44.44 | 26.98 | 6.77 | 43.19 | |||||||||||||
YRS | 78 | 81 | 81 | 78 | 85 | 85 | 85 | 87 | 87 | 85 | 81 | 77 | 62 |