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 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
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 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1940 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1941 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1942 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1943 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1944 | ----- | z | 21.93 | b | 25.84 | 50.30 | 69.42 | 71.21 | a | 80.43 | a | 76.84 | 65.30 | 61.16 | 35.48 | a | 20.35 | 52.57 | a | |||||||
1945 | ----- | z | ----- | z | 42.90 | a | 45.90 | a | 57.23 | 68.60 | 78.90 | 78.77 | 64.40 | 57.00 | 26.93 | a | 12.10 | 53.27 | b | |||||||
1946 | 15.43 | a | 15.61 | 42.13 | 57.73 | 62.40 | a | 75.97 | 82.61 | 78.13 | 66.33 | 50.10 | 34.73 | 18.19 | 49.95 | |||||||||||
1947 | 23.06 | 14.26 | a | 28.55 | 47.97 | a | 60.80 | a | 68.80 | 83.32 | 83.58 | 67.47 | 61.48 | 26.87 | 19.83 | a | 48.83 | |||||||||
1948 | 13.77 | a | 12.04 | c | 23.77 | 44.53 | 64.81 | 72.30 | 78.68 | 79.61 | 75.57 | 58.68 | 34.07 | a | 16.16 | 47.83 | ||||||||||
1949 | ----- | z | 10.96 | 26.58 | 55.90 | 67.90 | 76.33 | 79.39 | 83.23 | 70.17 | 53.55 | 41.73 | 15.93 | c | 52.88 | a | ||||||||||
1950 | ----- | z | 16.25 | ----- | z | 35.93 | 56.73 | a | 74.90 | 77.39 | c | 76.74 | 68.97 | 56.00 | 28.67 | 15.10 | 50.67 | b | ||||||||
1951 | 12.57 | a | 17.96 | 24.06 | 49.37 | 72.13 | 71.73 | 82.61 | 74.39 | 62.90 | 52.23 | a | 28.60 | 13.61 | 46.85 | |||||||||||
1952 | 11.81 | 25.82 | a | 28.32 | 63.03 | 71.83 | a | 77.67 | 82.61 | 81.58 | 76.20 | 57.90 | 42.07 | 26.06 | 53.74 | |||||||||||
1953 | 19.68 | 26.72 | c | 34.58 | 48.07 | 64.35 | 73.97 | 80.48 | 83.90 | 70.97 | 64.97 | 43.47 | 24.84 | 53.00 | ||||||||||||
1954 | 4.66 | b | 34.07 | 31.65 | 49.47 | 60.90 | 72.80 | 82.65 | 78.52 | 63.60 | 55.19 | 42.03 | 25.90 | 50.12 | ||||||||||||
1955 | 15.42 | 14.82 | 25.35 | 61.63 | 70.32 | 74.63 | 83.97 | 86.08 | e | 68.90 | a | 59.58 | 23.63 | 10.87 | 49.60 | |||||||||||
1956 | 14.57 | a | 14.48 | 24.45 | 39.97 | 65.10 | 79.80 | 79.13 | a | ----- | z | 70.40 | t | 60.48 | 36.20 | 23.19 | 43.74 | b | ||||||||
1957 | 10.32 | 18.86 | 33.61 | 50.60 | 66.71 | 71.17 | 84.55 | 77.48 | 64.13 | 52.03 | 34.10 | 27.87 | 49.29 | |||||||||||||
1958 | 24.87 | a | 19.07 | 37.48 | 55.57 | 70.10 | 69.97 | 76.39 | 79.74 | 70.40 | 58.52 | 35.03 | 15.65 | 51.06 | ||||||||||||
1959 | 7.06 | 15.70 | a | 37.16 | 52.93 | a | 62.87 | 77.37 | 82.66 | b | 83.65 | 67.97 | 44.60 | a | 25.68 | e | 28.10 | 48.81 | ||||||||
1960 | 14.90 | 18.66 | 23.48 | 47.27 | 67.52 | 73.20 | 85.10 | 81.16 | 71.20 | 57.10 | 36.17 | 20.58 | 49.69 | |||||||||||||
1961 | 17.16 | 24.75 | 38.23 | 46.00 | 66.26 | 82.50 | 78.97 | 85.55 | 64.03 | 56.48 | 38.10 | 14.84 | 51.07 | |||||||||||||
1962 | 12.26 | 12.07 | 27.16 | 48.13 | 60.71 | 73.10 | 76.58 | 81.29 | 65.30 | 59.68 | 38.47 | 23.90 | 48.22 | |||||||||||||
1963 | 10.10 | 19.79 | 42.65 | 53.43 | 65.00 | 79.03 | 83.77 | 81.71 | 74.77 | 68.29 | 41.60 | 15.42 | 52.96 | |||||||||||||
1964 | 21.81 | 26.38 | 28.42 | 51.93 | 70.16 | ----- | z | ----- | z | ----- | z | 54.29 | w | 55.45 | 35.23 | 8.94 | 37.29 | d | ||||||||
1965 | 9.40 | a | 14.93 | 22.42 | 44.10 | 61.73 | a | 71.73 | 76.71 | 77.81 | 53.27 | 57.94 | 31.37 | 26.35 | 45.65 | |||||||||||
1966 | -0.06 | 14.07 | 33.68 | 42.37 | 58.77 | 74.83 | 80.84 | 74.74 | 71.57 | 54.84 | 28.23 | 16.68 | 45.88 | |||||||||||||
1967 | 14.68 | 10.39 | 31.00 | 41.67 | 58.32 | 72.93 | 80.45 | 80.13 | 71.50 | 50.84 | 34.60 | 20.87 | 47.28 | |||||||||||||
1968 | 10.97 | a | 16.59 | 39.23 | 48.33 | 61.13 | 71.70 | 75.84 | 72.42 | 66.53 | 52.97 | 35.93 | 14.97 | a | 47.22 | |||||||||||
1969 | 6.00 | 16.93 | 24.58 | 51.80 | 65.84 | 64.50 | 76.32 | 84.55 | 70.13 | 43.77 | 35.67 | 24.13 | 47.02 | |||||||||||||
1970 | 7.48 | 20.82 | 24.58 | 41.00 | a | 58.00 | 78.03 | 80.48 | 80.32 | 68.30 | 54.97 | 30.87 | 15.81 | 46.72 | ||||||||||||
1971 | 5.58 | 19.12 | b | 28.48 | 48.30 | 63.61 | 73.97 | 73.52 | 79.68 | 67.37 | 54.39 | 29.97 | a | 16.52 | 46.71 | |||||||||||
1972 | 9.68 | 11.38 | 28.48 | 43.23 | 68.23 | 76.77 | 75.94 | 79.68 | 62.00 | 49.57 | a | 29.83 | 9.81 | 45.38 | ||||||||||||
1973 | 19.68 | 23.11 | 38.90 | 50.00 | 66.23 | 74.70 | 79.65 | 81.53 | a | 64.87 | 58.16 | 28.77 | 15.00 | a | 50.05 | |||||||||||
1974 | 4.61 | 14.93 | 23.65 | 45.43 | 55.70 | a | 74.77 | 82.13 | 73.68 | 63.80 | 56.29 | 33.17 | 25.26 | 46.12 | ||||||||||||
1975 | 17.29 | 16.11 | a | 24.77 | 38.63 | 63.52 | 71.80 | 81.29 | 75.94 | 65.50 | 55.19 | 39.23 | 19.74 | 47.42 | ||||||||||||
1976 | 15.07 | b | 28.24 | 28.74 | 54.37 | 68.45 | 75.93 | 81.68 | 82.32 | 71.83 | a | 51.67 | a | 33.73 | 16.13 | a | 50.68 | |||||||||
1977 | 4.19 | 24.38 | b | 39.19 | 59.33 | 76.42 | 75.43 | 79.48 | 71.94 | 62.90 | 56.84 | 32.27 | ----- | z | 52.94 | a | ||||||||||
1978 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 78.14 | h | 78.90 | 80.61 | 72.60 | 54.30 | d | 30.43 | 13.65 | 55.08 | f | |||||
1979 | 2.03 | 3.61 | 25.23 | 36.40 | 56.06 | 73.63 | 80.10 | 75.42 | 71.17 | a | 53.61 | 32.07 | 28.94 | 44.86 | ||||||||||||
1980 | 14.26 | 16.34 | 27.50 | a | 61.33 | 74.97 | 76.07 | 82.87 | 73.58 | 64.43 | 50.68 | 38.60 | 20.80 | a | 50.12 | |||||||||||
1981 | 21.13 | 25.11 | 41.03 | 55.17 | 65.16 | 71.00 | 78.81 | 80.42 | 67.93 | 52.10 | a | 43.73 | 17.80 | a | 51.62 | |||||||||||
1982 | 0.37 | a | 15.96 | a | 28.45 | 48.30 | 65.03 | 67.73 | 78.77 | 77.10 | a | 68.60 | 51.65 | 31.28 | a | 25.67 | a | 46.58 | ||||||||
1983 | 24.43 | a | 24.36 | 31.10 | 47.63 | 62.71 | 76.13 | 84.94 | 85.97 | 66.90 | 51.70 | a | 34.23 | 4.97 | 49.59 | |||||||||||
1984 | 18.84 | 30.10 | 27.77 | 53.43 | 64.55 | 74.77 | 80.65 | 84.63 | a | 64.10 | 53.52 | 34.20 | 15.50 | a | 50.17 | |||||||||||
1985 | 14.29 | c | 15.50 | 39.00 | a | 56.53 | 70.55 | 70.63 | 80.71 | 74.16 | 62.87 | 53.30 | a | 22.03 | 12.97 | 47.71 | ||||||||||
1986 | 20.80 | a | 16.39 | 39.52 | 50.83 | 68.32 | 79.37 | 80.48 | 78.65 | 69.63 | 55.73 | a | 26.69 | a | 24.23 | 50.89 | ||||||||||
1987 | 21.71 | 29.71 | 31.32 | 60.93 | 70.70 | a | 79.43 | 79.52 | 75.84 | 70.53 | 51.90 | 42.20 | 25.60 | a | 53.28 | |||||||||||
1988 | 13.10 | 17.48 | 34.32 | 57.80 | 73.23 | 84.27 | 84.42 | 81.77 | 67.80 | 55.37 | a | 34.00 | 21.55 | 52.09 | ||||||||||||
1989 | 18.74 | 10.73 | b | 24.19 | 48.33 | 68.94 | 72.79 | a | 85.39 | 81.97 | 70.63 | 58.48 | 31.13 | 13.03 | 48.70 | |||||||||||
1990 | 27.84 | 24.18 | 36.94 | 52.77 | 65.52 | 75.07 | 79.65 | 81.71 | 73.70 | 55.65 | 38.60 | 16.19 | 52.32 | |||||||||||||
1991 | 12.39 | 29.37 | a | 36.39 | 57.13 | 67.55 | 78.17 | 78.03 | 81.97 | 67.73 | 47.10 | 26.45 | a | 24.63 | a | 50.58 | ||||||||||
1992 | 22.52 | 25.21 | 37.55 | 45.37 | 69.97 | 71.63 | 70.42 | 74.00 | 64.30 | 56.16 | 27.77 | 12.13 | 48.08 | |||||||||||||
1993 | 10.86 | b | 14.82 | 29.97 | 51.40 | 65.84 | 68.76 | a | 71.77 | 75.23 | 63.33 | 53.16 | 30.83 | 20.50 | a | 46.37 | ||||||||||
1994 | -1.13 | 8.36 | 34.26 | 51.90 | 69.81 | 74.33 | 74.52 | 76.52 | 70.87 | 54.65 | 37.07 | a | 22.35 | 47.79 | ||||||||||||
1995 | 12.29 | 18.50 | 27.39 | 42.80 | 61.94 | 78.70 | 76.48 | 78.77 | 68.97 | 50.39 | 24.60 | 13.41 | b | 46.19 | ||||||||||||
1996 | 3.23 | 15.59 | 21.23 | 40.03 | 61.94 | 76.53 | 76.13 | 80.00 | 68.34 | a | 53.42 | 19.97 | 8.93 | b | 43.78 | |||||||||||
1997 | 5.61 | 21.21 | 24.87 | 42.87 | 61.42 | 78.97 | 77.19 | 78.26 | 71.67 | 52.77 | 28.76 | a | 29.03 | 47.72 | ||||||||||||
1998 | 13.32 | 29.64 | 29.32 | 58.57 | 70.61 | 69.73 | 80.29 | 82.87 | 76.27 | 53.84 | 31.73 | 19.65 | 51.32 | |||||||||||||
1999 | 8.97 | 25.86 | 34.10 | 51.47 | 64.32 | 73.77 | 80.48 | 76.90 | 65.40 | 53.48 | 46.73 | 30.48 | 51.00 | |||||||||||||
2000 | 17.16 | 31.90 | 43.48 | 51.87 | 68.58 | 71.17 | 79.97 | 81.10 | a | 66.23 | 56.35 | 29.10 | 6.42 | 50.28 | ||||||||||||
2001 | 20.81 | 11.86 | 30.06 | 49.40 | 67.06 | 73.53 | 81.13 | 82.65 | 69.43 | 51.03 | 44.93 | 23.68 | 50.46 | |||||||||||||
2002 | 21.23 | 30.79 | 25.26 | 46.43 | 59.32 | 76.40 | 81.42 | 77.43 | a | 70.83 | 41.74 | 32.48 | a | 25.32 | 49.05 | |||||||||||
2003 | 14.55 | 12.57 | 28.74 | 54.37 | 64.16 | 74.30 | 78.81 | 81.58 | 68.03 | 58.35 | 27.37 | 25.73 | a | 49.05 | ||||||||||||
2004 | 6.00 | 19.07 | 32.03 | 51.20 | 60.03 | 69.93 | 77.10 | 71.71 | 68.37 | 52.39 | 42.40 | 22.32 | 47.71 | |||||||||||||
2005 | 10.94 | 23.00 | 31.94 | 59.00 | 61.10 | 73.77 | 79.23 | 77.23 | 71.93 | 55.94 | 36.14 | a | 21.55 | 50.15 | ||||||||||||
2006 | 26.48 | 16.25 | 28.84 | 59.53 | 65.94 | 75.90 | 85.84 | 81.32 | 67.80 | 50.16 | 36.14 | b | 28.10 | 51.86 | ||||||||||||
2007 | 17.26 | ----- | z | 34.19 | 50.93 | 66.39 | 75.30 | 81.68 | 74.84 | 68.63 | 55.13 | 36.31 | a | 15.35 | 52.37 | a | ||||||||||
2008 | 13.31 | b | 13.17 | 29.32 | 49.50 | 62.23 | 71.60 | 78.19 | 78.16 | 67.87 | 53.58 | 34.39 | b | 8.87 | 46.68 | |||||||||||
2009 | 6.94 | 15.43 | 23.94 | 45.73 | 61.61 | 72.73 | 75.87 | 74.23 | 74.20 | 43.81 | 45.34 | a | 12.84 | 46.06 | ||||||||||||
2010 | 13.50 | a | 15.46 | b | 37.29 | 59.17 | 63.55 | 71.93 | 79.55 | 80.58 | 62.73 | 59.52 | 34.10 | 12.87 | 49.19 | |||||||||||
2011 | 8.33 | a | 15.25 | 25.39 | 46.57 | 60.48 | 69.97 | 80.68 | 77.58 | 69.13 | 59.06 | 38.67 | 28.97 | a | 48.34 | |||||||||||
2012 | 24.06 | 27.04 | a | 46.94 | 56.20 | 67.74 | 76.17 | 85.06 | 79.45 | 70.80 | 49.21 | b | 30.77 | 18.06 | 52.62 | |||||||||||
2013 | 15.77 | 18.32 | 23.42 | 35.90 | 63.52 | 73.57 | 79.03 | 80.23 | 72.10 | 50.83 | a | 33.57 | 8.71 | 46.25 | ||||||||||||
2014 | 11.39 | 9.50 | 25.74 | 44.47 | 63.19 | 71.86 | a | 76.68 | 76.31 | b | 68.73 | 56.16 | 27.80 | 21.45 | 46.11 | |||||||||||
2015 | 18.74 | 10.86 | 37.61 | 53.64 | b | 62.77 | a | 74.90 | a | 78.79 | b | 78.68 | 73.97 | 57.74 | 40.43 | 26.35 | 51.21 | |||||||||
2016 | 16.58 | 26.21 | a | 41.03 | 47.80 | 69.94 | 74.34 | a | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 45.98 | f | ||||
2017 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 76.19 | e | 66.93 | a | 55.97 | 30.17 | 20.10 | 49.87 | g | |||
2018 | 16.13 | 4.23 | o | 30.46 | e | 40.33 | c | 74.55 | 78.83 | 80.58 | 80.26 | 66.78 | c | 45.52 | 27.08 | f | 23.13 | 53.66 | b | |||||||
2019 | 11.81 | 3.70 | a | 25.81 | 48.72 | a | 61.23 | a | 76.22 | g | 80.32 | 75.87 | 66.93 | a | 42.26 | h | 30.71 | b | 19.30 | a | 42.44 | b | ||||
2020 | 16.48 | b | 24.94 | k | 32.13 | a | 45.07 | 63.06 | 79.63 | 82.58 | 79.74 | 69.28 | a | 46.35 | 39.83 | 30.68 | 53.17 | a | ||||||||
2021 | 23.33 | a | 25.10 | r | 45.68 | 52.03 | 67.37 | a | 82.73 | 83.55 | i | 80.94 | 74.93 | 58.32 | 37.79 | a | 21.93 | a | 54.51 | b | ||||||
2022 | 12.27 | a | 6.50 | x | 29.58 | 37.87 | 62.06 | 76.90 | 81.19 | 78.74 | 71.17 | 56.26 | 32.13 | 12.50 | a | 50.06 | a | |||||||||
2023 | 17.47 | p | 7.57 | u | 21.30 | a | 38.21 | b | 73.10 | 81.87 | 78.16 | 77.97 | 73.33 | 54.26 | 36.57 | 33.00 | 56.78 | b | ||||||||
2024 | 16.39 | ----- | z | 37.50 | g | 52.33 | x | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 16.39 | k | |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 13.77 | 18.73 | 31.24 | 49.48 | 65.22 | 74.49 | 79.83 | 79.04 | 68.39 | 54.34 | 33.88 | 19.33 | 48.94 | |||||||||||||
S.D. | 6.60 | 6.71 | 6.41 | 6.59 | 4.61 | 3.69 | 3.07 | 3.38 | 3.93 | 4.59 | 5.70 | 6.39 | 2.34 | |||||||||||||
SKEW | -0.13 | 0.22 | 0.53 | -0.07 | 0.16 | 0.22 | -0.42 | -0.08 | -0.52 | -0.21 | 0.08 | -0.06 | 0.07 | |||||||||||||
MAX | 27.84 | 34.07 | 46.94 | 63.03 | 76.42 | 84.27 | 85.84 | 86.08 | 76.27 | 68.29 | 46.73 | 33.00 | 53.74 | |||||||||||||
MIN | -1.13 | 3.61 | 21.23 | 35.90 | 55.70 | 64.50 | 70.42 | 71.71 | 53.27 | 41.74 | 19.97 | 4.97 | 43.78 | |||||||||||||
YRS | 74 | 71 | 77 | 78 | 78 | 76 | 76 | 77 | 77 | 78 | 78 | 78 | 63 |