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 | ----- | 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 | 64.09 | b | 47.68 | a | 36.41 | b | 27.78 | a | 43.99 | h |
1940 | 6.71 | c | 21.19 | e | 24.66 | 42.37 | d | 55.78 | d | 67.00 | 73.88 | a | 67.69 | 64.16 | b | 52.15 | 29.38 | e | 24.13 | e | 44.09 | |||||
1941 | 19.74 | f | 15.17 | d | 27.82 | 51.70 | c | 62.56 | d | 67.98 | b | 73.12 | b | 71.47 | 63.08 | f | 50.98 | b | 37.72 | e | 30.73 | i | 50.95 | c | ||
1942 | 22.36 | f | 20.48 | c | 34.74 | b | 51.85 | 55.10 | b | 66.13 | d | 70.21 | 69.70 | d | 58.08 | d | 49.48 | b | 33.14 | h | 16.62 | o | 52.86 | c | ||
1943 | 10.86 | m | 19.07 | g | 24.44 | d | 43.25 | 54.76 | b | 69.62 | b | 73.77 | a | 71.02 | c | 57.10 | a | 48.00 | b | 30.42 | d | 23.73 | g | 52.49 | c | |
1944 | 25.27 | c | 22.22 | b | 26.06 | f | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 23.75 | j |
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 | 73.81 | 58.43 | b | 53.55 | b | 37.41 | a | 22.27 | 49.09 | g | ||
1950 | 13.29 | g | 15.42 | b | 24.08 | 38.08 | 56.74 | 67.55 | 70.15 | 66.69 | 62.57 | 55.67 | a | 30.42 | 11.66 | 45.37 | a | |||||||||
1951 | 10.94 | 18.88 | 23.73 | a | 41.57 | ----- | z | 65.42 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 32.11 | g | ||||
1952 | 17.55 | b | 25.88 | 28.23 | 48.50 | 58.90 | 70.38 | 74.26 | 69.87 | 63.77 | 46.13 | ----- | z | 25.77 | 48.11 | a | ||||||||||
1953 | 20.84 | 21.17 | a | 32.44 | 41.47 | 59.44 | 71.48 | 72.29 | 72.83 | b | 63.77 | 58.52 | ----- | z | 26.53 | 49.16 | a | |||||||||
1954 | 15.47 | b | 32.79 | p | 31.19 | 49.73 | 53.90 | 72.23 | 74.47 | 70.60 | a | 62.18 | 49.37 | a | 38.73 | 25.32 | 49.38 | a | ||||||||
1955 | 17.83 | b | 18.20 | c | 26.13 | e | 52.97 | 62.60 | a | 67.27 | 77.94 | 75.74 | 64.80 | 52.85 | 29.22 | 16.61 | 46.85 | |||||||||
1956 | 17.23 | a | 17.43 | 27.19 | 43.40 | 58.89 | 73.72 | 70.13 | a | 71.79 | 60.67 | 58.10 | 36.03 | 25.56 | 46.68 | |||||||||||
1957 | 13.66 | 24.78 | a | 32.56 | 47.93 | 58.44 | 68.47 | 76.35 | a | 71.50 | 61.00 | 49.29 | 35.10 | 27.05 | 47.18 | |||||||||||
1958 | 23.57 | a | 17.71 | 34.16 | 48.57 | b | 61.26 | 64.02 | a | 70.77 | 72.21 | 63.82 | 55.02 | 38.47 | 17.93 | c | 47.29 | |||||||||
1959 | 11.61 | 16.70 | 32.69 | 47.55 | 62.74 | 71.03 | a | 73.68 | 75.39 | 64.05 | 46.23 | 27.73 | 31.95 | a | 46.78 | |||||||||||
1960 | 21.95 | 22.60 | 24.70 | a | 48.00 | 59.37 | 66.10 | 72.10 | 72.27 | 63.83 | 51.60 | 38.83 | 21.35 | 46.89 | ||||||||||||
1961 | 17.66 | 28.29 | 35.48 | 41.87 | 57.53 | 69.97 | 72.40 | 72.32 | 61.45 | 52.74 | 35.20 | c | 19.30 | a | 47.02 | |||||||||||
1962 | 12.15 | 17.59 | 29.47 | 45.10 | 63.45 | 68.63 | 70.18 | 71.53 | 59.98 | 53.77 | 38.13 | 21.37 | 45.95 | |||||||||||||
1963 | 7.29 | 16.04 | a | 35.65 | 49.78 | 58.37 | 73.00 | 75.27 | 70.69 | 64.72 | 61.77 | 41.43 | 13.31 | 47.28 | ||||||||||||
1964 | 24.45 | 27.59 | 30.52 | 48.92 | 63.71 | 69.55 | 76.70 | a | 70.08 | 61.60 | 50.53 | 37.93 | a | 18.13 | 48.31 | |||||||||||
1965 | 13.23 | 15.41 | 23.63 | 43.32 | 62.69 | 67.55 | 71.42 | 69.13 | 56.82 | 52.79 | 36.18 | 30.39 | 45.21 | |||||||||||||
1966 | 5.56 | 18.95 | 38.10 | a | 44.58 | 55.71 | 69.92 | 75.70 | a | 69.18 | 62.08 | 50.82 | 34.75 | 22.21 | 45.63 | |||||||||||
1967 | 19.26 | 13.16 | 33.39 | 47.53 | 54.48 | 68.82 | 70.60 | 68.26 | 62.15 | 49.87 | 33.95 | 25.32 | 45.57 | |||||||||||||
1968 | 18.61 | 18.17 | 40.69 | 50.90 | 56.05 | 68.27 | 71.35 | 72.10 | 62.33 | 53.45 | 36.93 | 20.65 | 47.46 | |||||||||||||
1969 | 11.90 | 22.11 | 26.56 | 50.55 | 60.85 | 62.12 | 72.55 | 73.60 | 63.30 | 48.82 | 35.45 | 22.87 | 45.89 | |||||||||||||
1970 | 8.79 | 18.98 | a | 28.97 | 48.07 | 60.23 | 70.48 | 74.15 | 71.79 | 62.07 | 51.84 | 34.63 | 20.71 | 45.89 | ||||||||||||
1971 | 8.58 | 18.21 | 28.11 | 48.02 | a | 55.65 | 72.60 | 69.21 | 69.24 | 63.77 | 55.89 | 35.98 | 22.87 | 45.68 | ||||||||||||
1972 | 10.26 | 13.88 | a | 28.40 | 43.02 | 62.73 | 66.67 | 70.52 | 71.32 | 60.83 | 46.61 | 33.88 | 15.44 | 43.63 | ||||||||||||
1973 | 19.90 | 23.21 | 41.23 | 45.67 | 55.33 | a | 69.30 | 72.71 | 72.16 | 59.87 | 55.02 | 36.53 | 19.90 | 47.57 | ||||||||||||
1974 | 16.76 | 19.39 | 31.97 | 47.70 | 54.58 | a | 65.87 | 76.00 | 68.27 | 57.22 | 51.08 | a | 36.15 | 26.23 | 45.93 | |||||||||||
1975 | 17.58 | 18.12 | 25.40 | 40.42 | 61.50 | 67.58 | 74.06 | 70.68 | 57.42 | 53.00 | 38.72 | 21.40 | a | 45.49 | ||||||||||||
1976 | 12.00 | 27.38 | 33.90 | 51.50 | a | 58.07 | b | 70.66 | a | 74.92 | 71.94 | 61.62 | 45.10 | a | 29.22 | a | 13.92 | a | 45.85 | |||||||
1977 | 1.53 | 22.91 | a | 39.77 | 54.81 | a | 69.07 | c | 68.84 | a | 75.50 | d | 68.82 | a | 63.24 | a | 48.21 | 33.65 | 17.63 | 47.00 | ||||||
1978 | 6.73 | 10.11 | 28.90 | 45.48 | 59.67 | a | 67.23 | 70.23 | 71.03 | 65.63 | 48.44 | 30.59 | c | 16.12 | b | 43.35 | ||||||||||
1979 | 2.45 | a | 9.27 | 29.89 | 42.98 | 55.79 | 66.67 | 70.84 | 68.16 | c | 63.05 | 47.15 | 33.05 | 27.32 | 43.05 | |||||||||||
1980 | 15.37 | 15.95 | 27.92 | a | 48.12 | 61.62 | a | 68.50 | 75.31 | 70.73 | c | 61.52 | 46.10 | 37.12 | 21.53 | 45.81 | ||||||||||
1981 | 19.73 | 24.25 | 36.29 | 50.45 | b | 57.06 | 67.60 | 71.68 | 69.69 | 60.50 | 47.16 | 38.32 | 19.34 | 46.84 | ||||||||||||
1982 | 5.82 | c | 16.39 | a | 31.28 | a | 43.02 | 62.50 | 63.33 | ----- | z | 70.22 | b | 59.79 | a | 51.62 | a | 33.43 | a | 26.84 | b | 42.20 | a | |||
1983 | 21.45 | b | 27.21 | 34.83 | a | 42.12 | 54.43 | a | 67.47 | a | 75.68 | 75.54 | c | 62.92 | 49.52 | a | 34.83 | c | 7.28 | b | 46.11 | |||||
1984 | 16.30 | d | 30.18 | a | 28.07 | c | 47.88 | a | 56.23 | 69.50 | 70.85 | 73.29 | 59.09 | c | 52.25 | a | 35.04 | b | 21.30 | f | 48.97 | a | ||||
1985 | 14.19 | b | 16.56 | a | 36.28 | b | 52.37 | 63.15 | a | 64.23 | d | 72.57 | b | 67.43 | b | ----- | z | 50.20 | a | 28.97 | a | 9.19 | b | 43.19 | a | |
1986 | 19.29 | 18.48 | 36.53 | 52.16 | b | 61.90 | 69.95 | a | 75.26 | 67.94 | 62.53 | 51.19 | 31.28 | a | 25.58 | 47.67 | ||||||||||
1987 | 24.33 | b | 32.13 | a | 39.34 | 54.20 | b | 64.36 | b | 72.08 | 75.81 | 69.94 | 63.80 | 46.10 | 40.00 | a | 27.76 | b | 50.82 | |||||||
1988 | 12.57 | a | 16.40 | 35.25 | a | 49.28 | 64.98 | a | 73.22 | a | 76.35 | a | 75.16 | 64.17 | 45.29 | 36.15 | 22.50 | 47.61 | ||||||||
1989 | 24.55 | 13.20 | 28.85 | 46.00 | a | 59.13 | 66.95 | 75.42 | a | 71.00 | 61.77 | 51.53 | a | 29.73 | 12.69 | 45.07 | ||||||||||
1990 | 27.66 | 25.28 | a | 37.27 | a | 48.72 | 57.10 | a | 69.37 | 72.31 | 71.76 | 65.43 | 50.50 | b | 41.38 | 19.18 | 48.83 | |||||||||
1991 | 14.42 | 26.25 | 35.85 | 51.05 | 62.44 | 71.08 | r | 72.37 | a | 72.03 | 61.05 | 48.38 | a | 27.40 | 24.29 | 45.05 | a | |||||||||
1992 | 23.94 | 29.71 | 33.63 | 44.63 | 61.35 | 66.08 | 66.83 | a | 67.11 | 61.13 | c | 49.63 | 33.57 | 23.77 | 46.78 | |||||||||||
1993 | 16.85 | 20.61 | a | 30.93 | a | 44.72 | 59.24 | 66.05 | 72.06 | 72.20 | a | 57.12 | 49.38 | a | 33.77 | 24.13 | a | 45.59 | ||||||||
1994 | 5.87 | 13.65 | b | 35.31 | 48.02 | 60.65 | a | 70.95 | a | 70.00 | a | 67.85 | 64.48 | a | 54.16 | 39.55 | a | 27.40 | 46.49 | |||||||
1995 | 19.85 | a | 21.37 | a | 36.07 | a | 43.20 | 57.81 | 71.48 | 73.89 | 76.18 | f | 61.19 | a | 50.07 | a | 28.28 | 19.87 | a | 43.92 | a | |||||
1996 | 9.83 | b | 17.94 | c | 26.63 | a | 44.04 | b | 55.58 | a | 68.72 | a | 70.16 | b | 71.02 | 62.86 | a | 50.94 | 28.27 | 17.82 | 43.65 | |||||
1997 | 13.87 | a | 23.00 | 32.02 | 45.33 | 54.90 | a | 70.43 | a | 71.53 | 68.58 | a | 63.87 | 52.65 | 31.05 | 28.68 | a | 46.33 | ||||||||
1998 | 21.95 | 33.20 | a | 33.03 | b | 52.28 | 65.25 | a | 66.18 | 73.29 | 71.86 | b | 68.09 | a | 53.26 | 39.58 | 28.73 | 50.56 | ||||||||
1999 | 14.25 | a | 30.08 | c | 35.81 | 49.41 | b | 61.09 | b | 67.29 | a | 74.66 | c | 68.06 | 61.46 | b | 48.62 | b | 40.71 | a | 26.20 | a | 48.14 | |||
2000 | 17.25 | a | 29.54 | a | 41.38 | a | 46.73 | 59.52 | 66.41 | a | 70.82 | 70.47 | a | 59.95 | 54.72 | a | 33.74 | a | 9.35 | a | 46.66 | |||||
2001 | 22.35 | a | 16.00 | 29.66 | 49.22 | a | 59.79 | b | 67.91 | a | 74.16 | 73.87 | 60.90 | 49.21 | b | 48.40 | a | 29.98 | a | 48.46 | ||||||
2002 | 27.21 | 30.55 | 27.69 | 47.05 | 54.95 | a | 70.50 | 75.05 | 71.07 | a | 65.40 | 45.32 | 35.02 | b | 28.50 | 48.19 | ||||||||||
2003 | 16.87 | 18.21 | 32.80 | a | 48.00 | c | 58.29 | 67.53 | a | 72.35 | 74.38 | a | 63.40 | a | 51.26 | 34.79 | b | 27.47 | a | 47.11 | ||||||
2004 | 14.18 | 23.71 | 36.87 | 50.17 | a | 57.52 | b | 65.78 | 70.94 | 65.79 | 67.10 | a | 51.17 | b | 39.37 | 23.70 | c | 47.19 | ||||||||
2005 | 18.02 | a | 28.07 | a | 32.48 | a | 51.98 | 56.00 | 73.25 | 75.70 | a | 71.34 | 67.28 | a | 54.05 | 37.48 | a | 20.37 | 48.84 | |||||||
2006 | 30.71 | 22.46 | 34.78 | a | 54.12 | a | 60.36 | b | 69.78 | 77.15 | 71.95 | 60.02 | a | 47.12 | a | 38.66 | a | 30.47 | b | 49.80 | ||||||
2007 | 21.52 | 12.78 | a | 38.71 | 47.14 | a | 65.03 | 71.98 | 74.02 | 72.10 | 65.75 | 56.58 | a | 36.24 | a | 19.02 | b | 48.41 | ||||||||
2008 | 15.55 | 15.95 | 30.29 | 46.42 | 56.79 | 68.20 | 73.52 | a | 71.05 | 64.72 | 51.25 | c | 36.47 | a | 15.31 | 45.46 | ||||||||||
2009 | 9.45 | 24.30 | a | 35.21 | 48.15 | 59.97 | 67.43 | 68.13 | 69.37 | 65.52 | 44.59 | b | 43.79 | a | 20.89 | 46.40 | ||||||||||
2010 | 15.05 | 21.07 | 41.18 | 56.13 | 61.29 | 69.33 | 75.71 | 75.82 | a | 61.63 | 54.22 | a | 37.85 | 17.55 | 48.90 | |||||||||||
2011 | 13.77 | 20.68 | 31.76 | 46.17 | a | 59.79 | 69.83 | 78.02 | 72.58 | 62.00 | 55.05 | a | 40.32 | 28.45 | 48.20 | |||||||||||
2012 | 23.45 | 26.77 | a | 49.62 | a | 50.00 | 65.23 | a | 72.03 | 79.38 | a | 71.55 | 62.70 | 49.13 | 39.14 | a | 27.59 | c | 51.38 | |||||||
2013 | 19.89 | 21.93 | 28.18 | 41.66 | a | 58.77 | 68.09 | a | 73.73 | 71.90 | b | 67.00 | a | 50.45 | b | 34.88 | a | 15.70 | a | 46.01 | ||||||
2014 | 9.48 | 9.00 | 28.50 | a | 45.48 | a | 60.02 | b | 70.93 | 70.73 | a | 73.40 | 64.33 | c | 50.21 | 29.59 | b | 26.58 | 44.86 | |||||||
2015 | 19.77 | a | 13.58 | b | 35.27 | 50.50 | 61.18 | 69.73 | 73.29 | 70.57 | a | 69.14 | a | 53.52 | 43.75 | 33.68 | 49.50 | |||||||||
2016 | 19.56 | 26.48 | 41.98 | a | 49.98 | 61.23 | 71.59 | a | 74.87 | 73.29 | 66.73 | 55.31 | 45.72 | 22.34 | 50.76 | |||||||||||
2017 | 21.56 | 31.70 | 35.34 | 51.25 | 58.58 | 70.05 | 74.21 | 68.52 | a | 67.85 | 53.17 | a | 35.50 | 21.06 | 49.07 | |||||||||||
2018 | 17.66 | 19.30 | 34.08 | a | 38.18 | 66.32 | 72.57 | b | 73.92 | 72.85 | a | 65.90 | 47.64 | b | 30.13 | 28.07 | a | 47.22 | ||||||||
2019 | 16.21 | b | 12.29 | b | 27.03 | 45.23 | 54.19 | 66.68 | 73.61 | 69.03 | 65.17 | a | 46.85 | 30.19 | a | 23.57 | a | 44.17 | ||||||||
2020 | 20.73 | a | 19.62 | a | 36.08 | a | 43.37 | 56.97 | 70.02 | a | 74.53 | 71.53 | 60.00 | 43.63 | 40.12 | 26.00 | 46.88 | |||||||||
2021 | 23.07 | c | 10.52 | b | 39.45 | 46.23 | 57.33 | a | 73.02 | 72.18 | 71.11 | 64.02 | 56.03 | 37.20 | 26.25 | a | 48.03 | |||||||||
2022 | 9.80 | c | 15.76 | a | 32.77 | 41.23 | 60.65 | d | 69.30 | 73.09 | c | 70.32 | 64.50 | 51.38 | c | 37.45 | 19.60 | a | 45.49 | |||||||
2023 | 23.58 | 22.15 | a | 31.10 | 49.63 | k | 60.45 | c | 70.65 | d | 71.58 | 72.61 | 67.83 | 53.63 | 37.88 | 34.24 | 49.61 | a | ||||||||
2024 | 22.06 | 34.05 | 37.71 | 46.70 | g | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 31.28 | i | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 16.42 | 20.70 | 32.66 | 47.25 | 59.44 | 68.89 | 73.21 | 71.05 | 62.77 | 50.96 | 35.66 | 22.50 | 46.89 | |||||||||||||
S.D. | 6.18 | 5.96 | 5.10 | 3.93 | 3.33 | 2.48 | 2.41 | 2.18 | 2.78 | 3.51 | 4.32 | 5.72 | 1.81 | |||||||||||||
SKEW | -0.24 | 0.26 | 0.39 | -0.12 | 0.35 | -0.20 | -0.01 | 0.01 | -0.09 | 0.30 | 0.16 | -0.45 | 0.27 | |||||||||||||
MAX | 30.71 | 34.05 | 49.62 | 56.13 | 69.07 | 73.72 | 79.38 | 75.82 | 69.14 | 61.77 | 48.40 | 34.24 | 51.38 | |||||||||||||
MIN | 1.53 | 9.00 | 23.63 | 38.08 | 53.90 | 62.12 | 66.83 | 65.79 | 56.82 | 43.63 | 27.40 | 7.28 | 43.05 | |||||||||||||
YRS | 76 | 78 | 79 | 77 | 77 | 77 | 76 | 77 | 77 | 79 | 76 | 75 | 64 |