YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
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 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
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 | 76.55 | u | 65.15 | 48.19 | 32.58 | 18.00 | 40.98 | h | ||||
1949 | 6.28 | b | 7.14 | 27.32 | 48.05 | a | 59.79 | 67.65 | 73.68 | 74.07 | a | 57.52 | a | 47.50 | a | 40.40 | a | 13.74 | 43.59 | |||||||
1950 | -3.85 | 11.09 | 21.37 | 36.62 | 52.65 | 66.97 | a | 67.58 | 66.48 | 60.43 | 51.18 | 25.07 | a | 14.77 | a | 39.20 | ||||||||||
1951 | 8.08 | a | 21.15 | b | 16.40 | 41.60 | 57.66 | 59.58 | 69.05 | 66.76 | 54.70 | 44.68 | 26.36 | a | 8.06 | 39.51 | ||||||||||
1952 | 7.50 | 19.55 | 19.52 | 48.07 | a | 57.45 | 70.10 | 72.76 | 70.35 | e | 64.92 | 45.37 | 31.47 | 19.87 | 43.91 | |||||||||||
1953 | 16.10 | a | 20.46 | 27.81 | e | 39.07 | 54.55 | a | 65.48 | 69.71 | 71.45 | 60.98 | 54.03 | 37.35 | 23.97 | a | 45.08 | |||||||||
1954 | 6.77 | 35.43 | 26.90 | a | 44.71 | a | 52.07 | a | 64.55 | 74.21 | 69.84 | 59.12 | 46.08 | 38.40 | 23.37 | 45.12 | ||||||||||
1955 | 15.95 | a | 10.80 | a | 25.35 | 52.22 | 61.18 | 64.57 | b | 75.42 | 74.47 | 61.58 | 50.66 | 19.75 | 8.11 | 43.34 | ||||||||||
1956 | 9.37 | 9.83 | 26.18 | 38.00 | 56.11 | 71.28 | 68.68 | 68.63 | 58.80 | 53.03 | 31.84 | a | 24.10 | a | 42.99 | |||||||||||
1957 | 5.98 | 17.48 | a | 29.43 | a | 43.10 | 54.71 | 63.58 | 74.03 | a | 69.57 | b | 56.88 | 46.65 | 31.85 | 26.74 | 43.33 | |||||||||
1958 | 20.78 | b | 12.66 | 28.52 | 45.05 | 60.18 | 60.13 | c | 66.80 | a | 72.24 | 61.59 | a | 49.19 | 31.63 | 14.52 | d | 43.61 | ||||||||
1959 | 7.94 | 9.43 | 33.85 | 44.27 | b | 54.82 | 69.78 | 71.92 | 74.39 | 59.65 | 41.69 | 22.07 | 25.76 | 42.96 | ||||||||||||
1960 | 9.71 | 11.43 | a | 16.76 | 44.50 | 55.69 | 62.78 | 73.02 | 70.03 | b | 61.12 | 48.21 | 30.97 | 14.92 | a | 41.59 | ||||||||||
1961 | 13.70 | a | 19.57 | 36.47 | 39.75 | 52.81 | 69.37 | 69.90 | 73.52 | a | 55.98 | 49.05 | 30.88 | 10.08 | 43.42 | |||||||||||
1962 | 10.16 | 12.77 | 23.58 | 45.42 | 57.71 | 62.87 | c | 68.11 | c | 69.55 | 56.53 | 49.94 | 35.14 | a | 19.63 | 42.62 | ||||||||||
1963 | 4.34 | 17.39 | 35.73 | 43.65 | 53.71 | 67.48 | 71.68 | 69.69 | 61.82 | 55.94 | 35.52 | 12.10 | 44.09 | |||||||||||||
1964 | 20.23 | 24.84 | 23.69 | 45.76 | a | 59.16 | 66.24 | a | 73.74 | 67.40 | 58.15 | 48.47 | 28.87 | 8.18 | 43.73 | |||||||||||
1965 | 5.34 | 14.54 | 18.19 | 43.48 | a | 56.74 | 65.20 | 71.65 | 69.92 | a | 52.89 | l | 51.16 | 31.50 | 25.31 | 41.18 | a | |||||||||
1966 | 0.89 | 11.75 | 33.38 | a | 39.40 | a | 55.79 | c | 64.55 | h | 76.45 | 67.39 | c | 59.77 | 48.40 | 23.75 | l | 20.57 | a | 41.38 | b | |||||
1967 | 16.71 | 12.50 | 31.93 | b | 42.70 | 51.90 | 63.62 | 68.95 | 68.94 | 61.25 | 46.53 | 32.05 | 16.11 | 42.77 | ||||||||||||
1968 | 11.18 | a | 16.12 | a | 36.74 | 43.52 | 51.65 | 65.92 | 69.48 | 67.94 | 59.47 | 48.62 | a | 31.90 | 10.94 | 42.79 | ||||||||||
1969 | 2.38 | a | 17.46 | 18.58 | 47.23 | 59.05 | 59.95 | 69.44 | 72.95 | 61.52 | 41.27 | 31.55 | 18.06 | e | 41.62 | |||||||||||
1970 | 3.07 | a | 18.05 | 21.40 | 41.82 | 56.58 | 68.92 | 72.82 | 71.53 | 60.62 | 46.61 | 28.76 | a | 12.84 | 41.92 | |||||||||||
1971 | 3.09 | b | 15.00 | 30.39 | 47.12 | 55.19 | 68.80 | e | 68.02 | 71.44 | 59.98 | 47.56 | 30.63 | 10.73 | 42.33 | |||||||||||
1972 | 4.63 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 61.21 | i | 44.90 | a | 30.40 | a | 6.05 | i | 26.64 | i | |
1973 | 17.79 | 23.23 | 38.16 | 44.17 | c | 54.75 | s | 67.38 | b | 73.18 | f | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 38.15 | g | |||
1974 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1975 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1976 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1977 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1978 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1979 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1980 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1981 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1982 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1983 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1984 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1985 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1986 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1987 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1988 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1989 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 70.31 | b | 57.80 | 47.05 | a | 28.47 | a | 6.53 | a | 42.03 | g | |
1990 | 24.55 | 19.88 | 33.23 | 42.37 | 52.45 | 65.36 | a | 68.66 | 69.56 | 62.33 | 44.24 | 33.17 | 11.73 | a | 43.96 | |||||||||||
1991 | 10.32 | 26.25 | 30.81 | 45.35 | 56.65 | 67.80 | 69.50 | a | 70.94 | 57.97 | 42.79 | 22.98 | 23.15 | 43.71 | ||||||||||||
1992 | 21.43 | a | 26.40 | 34.73 | 40.35 | 58.32 | 62.08 | 61.85 | 62.89 | 56.78 | 45.35 | 26.57 | 13.11 | 42.49 | ||||||||||||
1993 | 7.26 | 10.09 | 27.65 | 41.03 | 54.42 | 59.80 | 64.76 | 66.15 | a | 52.53 | 43.75 | a | 25.90 | 16.84 | 39.18 | |||||||||||
1994 | -0.50 | a | 4.68 | 30.13 | 43.05 | 58.84 | 65.45 | 66.27 | 65.31 | 59.47 | 47.66 | 31.85 | 17.60 | a | 40.82 | |||||||||||
1995 | 11.65 | 18.41 | 25.19 | 36.68 | 52.06 | 66.22 | 69.84 | 71.53 | 58.13 | 44.50 | 24.71 | a | 16.84 | 41.31 | ||||||||||||
1996 | 3.87 | 16.71 | 18.73 | 38.13 | 50.53 | 66.30 | 67.29 | 69.56 | 57.48 | 44.48 | 17.85 | 5.90 | 38.07 | |||||||||||||
1997 | 2.79 | 16.23 | 23.15 | 37.87 | 52.50 | 67.38 | 69.74 | 68.98 | 61.66 | a | 47.66 | 25.63 | 26.11 | 41.64 | ||||||||||||
1998 | 13.37 | 28.45 | 22.11 | 46.62 | 59.08 | 61.79 | a | 72.40 | 70.73 | 64.90 | 46.23 | 32.45 | 23.27 | 45.12 | ||||||||||||
1999 | 9.34 | 26.41 | 33.53 | 43.20 | 55.85 | 64.42 | 71.69 | 68.67 | a | 55.70 | 44.44 | 40.00 | 25.69 | 44.91 | ||||||||||||
2000 | 15.61 | 25.07 | 36.13 | 42.65 | 57.23 | 63.10 | 70.52 | a | 70.21 | 59.28 | 48.58 | 22.63 | 5.24 | 43.02 | ||||||||||||
2001 | 16.29 | 6.18 | 23.94 | 42.90 | 57.73 | 65.45 | 72.79 | 71.92 | 60.02 | 45.11 | 39.58 | 19.94 | 43.49 | |||||||||||||
2002 | 19.94 | 26.12 | 18.07 | a | 41.25 | 50.39 | 69.52 | 74.84 | 68.02 | 61.13 | 37.74 | 31.08 | 22.89 | 43.42 | ||||||||||||
2003 | 13.71 | 11.59 | 25.74 | 45.23 | 53.85 | 63.48 | 71.34 | 72.29 | 58.78 | 50.32 | 23.08 | 23.92 | 42.78 | |||||||||||||
2004 | 8.87 | 17.12 | 34.03 | 45.35 | 52.56 | 60.60 | 67.85 | 63.32 | 61.03 | 46.23 | a | 34.10 | 21.94 | 42.75 | ||||||||||||
2005 | 10.29 | 23.75 | 30.74 | 47.00 | 52.39 | 66.88 | 71.68 | 68.76 | 63.68 | 47.61 | 33.50 | 17.52 | 44.48 | |||||||||||||
2006 | 26.50 | 20.27 | 30.42 | 47.92 | 56.08 | 67.30 | 77.15 | 70.85 | 56.23 | 41.65 | 31.02 | 24.68 | 45.84 | |||||||||||||
2007 | 13.13 | a | 6.59 | a | 34.71 | 39.13 | 58.79 | 66.58 | 73.60 | 67.84 | 61.40 | 48.19 | 32.53 | 14.37 | 43.07 | |||||||||||
2008 | 10.61 | 12.17 | 28.02 | 38.85 | 51.76 | 63.00 | 71.65 | 69.05 | 59.20 | 45.34 | 31.50 | 8.90 | 40.84 | |||||||||||||
2009 | 7.68 | 15.62 | 23.31 | 41.27 | 54.35 | 62.75 | 66.89 | 66.00 | 61.55 | 38.44 | 37.25 | 11.02 | 40.51 | |||||||||||||
2010 | 9.47 | 9.45 | 32.87 | 49.47 | 54.58 | 66.48 | 71.60 | 72.89 | 56.45 | 48.69 | 29.72 | 12.31 | 42.83 | |||||||||||||
2011 | 7.19 | 10.45 | 19.61 | 40.42 | 51.89 | 63.57 | 74.98 | 70.71 | 58.63 | 49.84 | 32.78 | 23.77 | 41.99 | |||||||||||||
2012 | 21.76 | 22.52 | 43.15 | 47.58 | 57.79 | 68.63 | 76.52 | 68.31 | 59.97 | 43.69 | 30.18 | 16.37 | 46.37 | |||||||||||||
2013 | 14.92 | 15.95 | 19.13 | 33.25 | 55.10 | 64.52 | 69.92 | 70.40 | 64.12 | 42.84 | 28.92 | 8.76 | 40.65 | |||||||||||||
2014 | 11.77 | 8.43 | 24.50 | 40.45 | 55.69 | 64.58 | 68.60 | 68.08 | 59.67 | 49.13 | 20.90 | 18.87 | 40.89 | |||||||||||||
2015 | 17.65 | 10.54 | 34.19 | 46.53 | 54.02 | 67.98 | 72.21 | 68.77 | 64.63 | 49.95 | 35.12 | 21.53 | 45.26 | |||||||||||||
2016 | 15.85 | 27.02 | 36.76 | 42.90 | 57.24 | 67.75 | 70.44 | 69.81 | 60.23 | 47.89 | 39.87 | 12.26 | 45.67 | |||||||||||||
2017 | 11.66 | 24.41 | 28.73 | 43.80 | 55.42 | 66.85 | 72.71 | 64.90 | 59.62 | 46.48 | 29.33 | 18.37 | 43.52 | |||||||||||||
2018 | 13.08 | 7.70 | 26.35 | 33.32 | 61.98 | 69.15 | 70.15 | 68.90 | 58.82 | 39.79 | 23.60 | 22.18 | 41.25 | |||||||||||||
2019 | 10.92 | -0.69 | a | 19.45 | 41.07 | 49.16 | 66.42 | 71.58 | 66.11 | 60.20 | 37.92 | 26.93 | 16.92 | 38.83 | ||||||||||||
2020 | 12.55 | 17.66 | a | 30.87 | 39.55 | 52.39 | 68.80 | 72.47 | 71.23 | 57.98 | 37.45 | 34.45 | 24.50 | 43.32 | ||||||||||||
2021 | 23.34 | 9.14 | 36.15 | 40.35 | 54.05 | 72.07 | 73.94 | 71.23 | 62.48 | 48.84 | 33.78 | 19.35 | 45.39 | |||||||||||||
2022 | 11.52 | 13.27 | 28.48 | 35.32 | 53.76 | 66.57 | 71.98 | 69.58 | 62.07 | 46.35 | 23.19 | c | 9.57 | c | 40.97 | |||||||||||
2023 | 15.06 | f | 16.69 | l | 14.77 | e | 33.82 | e | 58.83 | d | 71.70 | c | 69.02 | g | 73.25 | y | ----- | z | ----- | z | ----- | z | ----- | z | 44.78 | h |
2024 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 11.25 | 16.20 | 27.71 | 42.47 | 55.35 | 65.83 | 70.97 | 69.51 | 59.82 | 46.46 | 30.37 | 16.94 | 42.74 | |||||||||||||
S.D. | 6.48 | 7.10 | 6.59 | 4.07 | 2.92 | 3.03 | 3.00 | 2.53 | 2.62 | 3.83 | 5.22 | 6.07 | 1.87 | |||||||||||||
SKEW | 0.19 | 0.25 | -0.03 | -0.25 | 0.13 | -0.18 | -0.35 | -0.37 | -0.12 | -0.37 | -0.23 | -0.15 | -0.40 | |||||||||||||
MAX | 26.50 | 35.43 | 43.15 | 52.22 | 61.98 | 72.07 | 77.15 | 74.47 | 65.15 | 55.94 | 40.40 | 26.74 | 46.37 | |||||||||||||
MIN | -3.85 | -0.69 | 14.77 | 33.25 | 49.16 | 59.58 | 61.85 | 62.89 | 52.53 | 37.45 | 17.85 | 5.24 | 38.07 | |||||||||||||
YRS | 58 | 57 | 58 | 58 | 57 | 57 | 56 | 57 | 57 | 59 | 58 | 58 | 54 |