YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1937 | 2.41 | b | 30.48 | a | 40.00 | a | 27.54 | b | 44.42 | 53.21 | a | 63.68 | c | 51.60 | a | 47.59 | c | 40.55 | b | 36.33 | 32.55 | b | 39.20 | |||
1938 | 29.35 | 30.68 | 32.45 | 36.04 | b | 39.84 | 45.73 | 54.55 | 46.03 | 47.37 | 38.33 | a | 26.29 | b | 25.34 | b | 37.67 | |||||||||
1939 | 26.90 | 25.40 | c | 31.03 | 34.83 | 40.79 | b | 45.41 | a | 52.10 | 49.65 | 46.33 | 37.00 | 26.47 | 31.55 | 37.29 | ||||||||||
1940 | 22.71 | 32.18 | a | 34.32 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 29.74 | i | ||
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 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1949 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1950 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1951 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1952 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1953 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1954 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1955 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1956 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1957 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1958 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 40.09 | s | 35.77 | a | 32.30 | 30.97 | 33.01 | i | ||
1959 | 30.94 | 30.68 | 30.77 | 34.87 | 39.06 | 48.43 | 51.87 | 48.35 | 46.59 | a | 38.35 | 25.43 | 22.65 | 37.33 | ||||||||||||
1960 | 19.03 | 27.07 | 31.52 | 35.83 | a | 39.71 | 45.53 | 53.42 | 48.97 | 43.30 | 36.58 | 29.90 | 22.45 | 36.11 | ||||||||||||
1961 | 26.19 | 34.11 | 32.13 | 33.93 | 40.90 | 50.13 | 51.10 | 55.10 | 40.20 | 35.61 | 23.73 | 26.87 | a | 37.50 | ||||||||||||
1962 | 17.42 | 27.21 | 29.48 | 36.60 | 41.10 | 43.63 | 48.71 | 50.94 | 44.10 | 36.77 | 34.70 | 28.65 | 36.61 | |||||||||||||
1963 | 17.27 | a | 32.81 | a | 32.16 | 36.70 | 43.61 | 48.50 | 49.58 | 51.87 | 51.27 | 39.52 | 34.38 | a | 27.23 | a | 38.74 | |||||||||
1964 | 27.71 | 24.14 | 29.94 | 31.90 | 38.19 | 48.83 | 51.74 | 49.77 | 42.97 | 36.84 | 30.90 | a | 27.10 | 36.67 | ||||||||||||
1965 | 30.97 | 31.57 | 26.06 | 37.70 | 40.16 | 48.33 | 53.39 | 53.74 | 39.87 | 38.40 | a | 34.60 | 25.03 | a | 38.32 | |||||||||||
1966 | 28.33 | a | 28.96 | 32.84 | 34.97 | 42.77 | 49.03 | 51.84 | 52.26 | 48.17 | 37.29 | 35.60 | 30.87 | 39.41 | ||||||||||||
1967 | 32.23 | 28.64 | 31.00 | 33.83 | 40.61 | 49.90 | 54.00 | 53.94 | 49.03 | 38.26 | 33.50 | 24.90 | a | 39.15 | ||||||||||||
1968 | 27.74 | 34.00 | 33.77 | 35.20 | 43.48 | 51.17 | 54.35 | 52.77 | 45.97 | 36.26 | 34.33 | 28.35 | 39.78 | |||||||||||||
1969 | 21.16 | 27.64 | 29.16 | 36.63 | 44.35 | 52.80 | 51.52 | 48.65 | 46.63 | 35.03 | 28.73 | 29.61 | 37.66 | |||||||||||||
1970 | 28.42 | 31.14 | 32.16 | 32.43 | 41.19 | 53.60 | 54.32 | 51.06 | 42.13 | 35.06 | 33.70 | 28.16 | 38.62 | |||||||||||||
1971 | 28.23 | 27.79 | 30.00 | 35.00 | 43.00 | 47.47 | 52.94 | 55.61 | 40.87 | 32.90 | 31.90 | 26.03 | 37.64 | |||||||||||||
1972 | 23.79 | b | 29.00 | 34.06 | 32.89 | b | 43.00 | 49.93 | 52.65 | 52.10 | 42.83 | 35.06 | 33.03 | 17.84 | 37.18 | |||||||||||
1973 | 23.42 | 30.96 | 32.29 | 34.57 | 42.81 | 49.37 | 52.35 | 50.39 | 46.77 | 37.33 | a | 35.43 | 33.45 | 39.10 | ||||||||||||
1974 | 21.39 | 31.04 | 32.55 | 37.07 | 41.68 | 50.50 | 53.45 | 52.32 | 42.77 | 34.26 | 33.66 | a | 27.97 | 38.22 | ||||||||||||
1975 | 29.81 | 27.96 | 29.77 | 33.33 | 40.52 | 48.07 | a | 57.13 | 49.81 | 42.77 | 40.94 | 29.97 | 28.19 | 38.19 | ||||||||||||
1976 | 27.06 | 26.14 | 30.00 | 35.67 | 40.84 | 44.93 | 53.13 | 52.84 | 47.17 | 34.19 | 34.90 | 21.97 | 37.40 | |||||||||||||
1977 | 16.52 | 28.82 | 31.61 | 36.27 | 41.06 | 51.03 | 52.97 | a | 56.16 | 45.45 | a | 37.16 | 28.28 | a | 32.00 | 38.11 | ||||||||||
1978 | 29.55 | ----- | z | 34.93 | a | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 32.24 | j | |
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 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1990 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1991 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1992 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1993 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1994 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1995 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1996 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1997 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1998 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1999 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2000 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2001 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2002 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2003 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2004 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2005 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2006 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2007 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2008 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2009 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2010 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2011 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2012 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2013 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2014 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2015 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2016 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2017 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2018 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2019 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2020 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2021 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2022 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2023 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2024 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 24.52 | 29.50 | 31.83 | 34.72 | 41.51 | 48.89 | 53.22 | 51.54 | 45.01 | 36.85 | 31.65 | 27.38 | 38.00 | |||||||||||||
S.D. | 6.63 | 2.64 | 2.61 | 2.22 | 1.71 | 2.69 | 2.92 | 2.52 | 3.02 | 2.01 | 3.65 | 3.82 | 0.98 | |||||||||||||
SKEW | -1.63 | -0.08 | 0.89 | -1.54 | 0.09 | -0.12 | 2.05 | -0.06 | 0.02 | 0.19 | -0.71 | -0.54 | 0.03 | |||||||||||||
MAX | 32.23 | 34.11 | 40.00 | 37.70 | 44.42 | 53.60 | 63.68 | 56.16 | 51.27 | 40.94 | 36.33 | 33.45 | 39.78 | |||||||||||||
MIN | 2.41 | 24.14 | 26.06 | 27.54 | 38.19 | 43.63 | 48.71 | 46.03 | 39.87 | 32.90 | 23.73 | 17.84 | 36.11 | |||||||||||||
YRS | 24 | 23 | 24 | 22 | 22 | 22 | 22 | 22 | 22 | 23 | 23 | 23 | 22 |