YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1928 | ----- | z | ----- | z | ----- | z | ----- | z | 36.44 | v | 41.00 | q | 50.00 | e | 51.47 | n | 40.73 | d | 33.70 | h | ----- | z | ----- | z | 45.37 | j |
1929 | ----- | z | ----- | z | ----- | z | 32.14 | w | 33.13 | 40.19 | c | 48.41 | d | 45.27 | e | 41.45 | a | 30.73 | i | ----- | z | ----- | z | 41.69 | g | |
1930 | ----- | z | ----- | z | ----- | z | 29.79 | f | 36.82 | c | 48.93 | a | 50.23 | 45.85 | e | 40.96 | d | 31.81 | e | ----- | z | ----- | z | 42.43 | f | |
1931 | ----- | z | ----- | z | ----- | z | 26.79 | b | 36.10 | 48.63 | 51.68 | 46.87 | a | 47.17 | 37.59 | d | 25.55 | a | 17.35 | k | 40.05 | d | ||||
1932 | 10.70 | d | 2.21 | 5.61 | 24.34 | a | 37.81 | 45.93 | a | 50.16 | 48.77 | 37.33 | 29.70 | a | ----- | z | ----- | z | 29.26 | b | ||||||
1933 | ----- | z | ----- | z | ----- | z | 24.07 | c | 37.35 | 47.03 | 51.71 | 44.45 | 44.53 | 29.31 | b | ----- | z | ----- | z | 39.78 | e | |||||
1934 | ----- | z | ----- | z | ----- | z | 28.39 | b | 37.71 | c | 46.73 | 49.29 | 43.61 | 40.50 | b | 35.90 | ----- | z | ----- | z | 40.31 | e | ||||
1935 | ----- | z | ----- | z | ----- | z | 24.61 | b | 33.23 | 44.41 | a | 56.90 | 51.87 | 39.52 | a | 34.24 | b | ----- | z | ----- | z | 40.68 | e | |||
1936 | ----- | z | ----- | z | ----- | z | 21.63 | 39.65 | 42.47 | 51.87 | 50.74 | 45.55 | a | 28.07 | b | ----- | z | ----- | z | 40.00 | e | |||||
1937 | ----- | z | ----- | z | ----- | z | 27.50 | b | 38.03 | a | 44.60 | 49.77 | 55.65 | 39.03 | a | 29.97 | a | ----- | z | ----- | z | 40.65 | e | |||
1938 | ----- | z | ----- | z | ----- | z | 30.50 | b | 38.50 | a | 46.60 | 51.29 | 53.33 | a | 43.40 | j | 32.95 | k | 17.68 | b | 2.35 | 34.32 | e | |||
1939 | 2.66 | b | -10.92 | b | 7.39 | c | 21.86 | a | 38.50 | a | 48.17 | 50.39 | 51.13 | 43.28 | a | 33.00 | a | 19.67 | 17.58 | 26.89 | ||||||
1940 | -7.03 | a | 6.57 | a | 6.07 | a | 22.79 | b | 34.94 | 44.23 | 50.52 | 52.32 | 45.50 | 35.42 | 16.88 | f | 8.82 | c | 27.29 | a | ||||||
1941 | 7.13 | a | 3.60 | c | 9.60 | a | 33.20 | 43.32 | 48.07 | 56.13 | 51.71 | 49.60 | 37.32 | 24.41 | a | 15.16 | 31.60 | |||||||||
1942 | 5.84 | 2.19 | a | 18.58 | 28.55 | j | 36.06 | 48.87 | ----- | z | 53.50 | a | 42.77 | 31.32 | 19.10 | a | -1.58 | 25.66 | b | |||||||
1943 | -7.84 | -2.08 | c | 3.52 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 18.75 | b | 2.80 | f | 3.09 | h | ||
1944 | 9.79 | b | 1.04 | a | 11.35 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 30.50 | 7.78 | d | 12.09 | g | ||
1945 | -3.39 | -2.00 | 19.87 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 5.19 | e | 4.92 | h | |||
1946 | -1.04 | d | -5.07 | a | 23.03 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 4.65 | 5.39 | h | ||
1947 | -0.52 | -0.43 | 7.33 | a | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9.50 | n | 2.94 | 2.33 | h | |||
1948 | -9.90 | a | -4.25 | a | 10.59 | b | ----- | z | ----- | z | ----- | z | ----- | z | 54.32 | ----- | z | ----- | z | ----- | z | ----- | z | 12.69 | h | |
1949 | ----- | z | 10.00 | q | 10.03 | a | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 10.03 | k |
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 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1959 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1960 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1961 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1962 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1963 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1964 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1965 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1966 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 52.93 | c | ----- | z | ----- | z | ----- | z | ----- | z | 52.93 | k |
1967 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1968 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1969 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1970 | ----- | z | -0.12 | b | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 36.84 | f | ----- | z | ----- | z | -0.12 | k |
1971 | ----- | z | 2.46 | 13.65 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 8.05 | j | ||
1972 | ----- | z | ----- | z | ----- | z | 26.20 | 41.29 | 46.00 | a | 53.16 | 53.55 | ----- | z | 33.65 | ----- | z | ----- | z | 42.31 | f | |||||
1973 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
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 | 25.70 | a | ----- | z | -7.20 | f | 25.70 | k |
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 | -14.16 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | -14.16 | k | |
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 | 18.34 | a | 18.41 | b | 18.38 | j |
1998 | 7.59 | d | 23.70 | a | 19.19 | 31.03 | 41.52 | 48.23 | 53.19 | 54.16 | 47.17 | 37.23 | 27.23 | 11.38 | b | 33.47 | ||||||||||
1999 | -4.76 | b | 9.42 | b | 18.65 | 30.00 | 42.19 | 51.20 | 56.10 | b | 54.42 | 45.07 | a | 31.31 | b | 28.00 | b | 9.64 | c | 30.94 | ||||||
2000 | -2.52 | 8.00 | c | 21.81 | 27.87 | 41.55 | 45.93 | 53.80 | a | 53.43 | a | 41.57 | b | 36.19 | 25.10 | -4.48 | d | 29.02 | ||||||||
2001 | 7.81 | d | -4.74 | a | 14.71 | 31.27 | 40.58 | 50.03 | 53.32 | 54.26 | 43.27 | 32.32 | 31.17 | 16.61 | 30.88 | |||||||||||
2002 | 9.77 | 12.59 | a | 7.29 | 28.03 | 35.74 | 50.70 | 57.39 | 53.40 | a | 47.20 | 30.06 | 19.23 | 13.23 | 30.39 | |||||||||||
2003 | -0.23 | -3.71 | 13.58 | 25.97 | 36.29 | 47.13 | 53.84 | 55.06 | 46.03 | 33.42 | 21.67 | 11.39 | 28.37 | |||||||||||||
2004 | -4.28 | b | 5.96 | c | 20.39 | 28.33 | 36.71 | 44.83 | ----- | z | 46.94 | ----- | z | 36.74 | 24.83 | 6.39 | 24.68 | b | ||||||||
2005 | -4.61 | 10.64 | 10.52 | 31.33 | 38.74 | 52.77 | 56.86 | b | 51.68 | 47.63 | 37.43 | a | 21.93 | b | 11.27 | a | 30.52 | |||||||||
2006 | 18.32 | 0.86 | 20.33 | a | 32.83 | 43.48 | d | 48.73 | 57.67 | a | 54.03 | 40.86 | a | 30.00 | ----- | z | 16.66 | b | 33.07 | a | ||||||
2007 | 6.77 | a | -4.73 | b | 20.53 | a | ----- | z | 43.52 | 50.93 | a | 54.13 | 52.97 | 45.08 | d | 38.43 | c | 23.11 | c | 5.12 | g | 33.07 | b | |||
2008 | 2.40 | a | -1.20 | d | 7.77 | e | 28.27 | ----- | z | ----- | z | 53.26 | 49.47 | a | 44.24 | e | 34.10 | a | 21.86 | a | -2.57 | a | 23.76 | b | ||
2009 | -12.67 | a | 4.39 | 14.87 | 28.27 | 36.55 | 46.50 | 48.87 | 50.65 | 48.40 | 31.19 | 28.97 | 5.00 | 27.58 | ||||||||||||
2010 | -0.77 | 2.29 | 23.48 | 31.70 | 40.94 | 50.57 | 58.29 | 58.39 | 41.57 | 33.32 | 22.13 | 6.39 | 30.69 | |||||||||||||
2011 | 0.32 | 5.86 | 14.97 | 28.53 | 36.52 | 47.07 | 58.29 | 54.16 | 43.80 | 36.19 | 24.17 | 14.03 | 30.33 | |||||||||||||
2012 | 9.00 | 14.93 | 29.19 | 29.77 | 41.68 | 50.37 | 58.32 | 51.13 | 40.13 | 31.52 | 22.50 | 10.77 | 32.44 | |||||||||||||
2013 | 1.81 | 4.04 | 10.58 | 23.37 | 36.39 | 46.20 | 53.03 | 52.61 | 44.97 | 35.03 | 19.77 | -4.84 | 26.91 | |||||||||||||
2014 | -11.23 | -5.39 | 9.16 | 25.60 | 37.77 | 49.77 | 53.74 | 55.19 | 45.13 | 34.19 | 14.00 | 16.06 | 27.00 | |||||||||||||
2015 | 6.00 | -5.50 | 16.87 | 28.87 | 37.65 | 47.80 | 54.87 | 53.37 | a | 50.20 | 34.00 | 26.83 | 23.03 | 31.17 | ||||||||||||
2016 | 5.71 | 8.52 | 23.23 | 29.23 | 38.00 | 48.33 | 55.27 | a | 55.52 | 49.53 | 37.87 | 29.00 | 10.35 | 32.55 | ||||||||||||
2017 | 7.68 | 13.61 | 16.26 | 29.83 | 37.55 | 47.80 | 52.35 | 49.83 | a | 48.57 | 36.52 | 20.20 | 4.81 | 30.42 | ||||||||||||
2018 | 1.06 | -1.21 | 16.39 | 20.60 | 41.23 | a | 48.97 | 55.35 | 54.71 | 49.30 | g | 33.71 | 17.82 | b | 15.58 | 27.66 | a | |||||||||
2019 | -0.48 | -0.25 | 13.16 | 30.07 | 36.35 | 46.93 | 56.97 | 51.58 | 49.17 | 35.10 | 20.10 | 10.90 | 29.13 | |||||||||||||
2020 | 10.94 | 5.34 | 23.23 | 26.97 | 38.81 | 51.23 | 57.77 | 56.06 | 44.53 | 30.19 | 27.87 | 13.26 | 32.18 | |||||||||||||
2021 | 8.61 | -1.07 | 23.61 | 30.50 | 39.42 | 52.70 | 54.03 | 56.68 | 46.87 | 41.61 | 23.33 | 11.19 | 32.29 | |||||||||||||
2022 | -6.68 | -2.96 | 15.19 | 26.79 | b | 40.76 | f | 48.73 | 54.32 | 55.90 | 46.60 | 35.61 | 25.03 | 7.87 | 27.86 | a | ||||||||||
2023 | 12.68 | 6.64 | 15.68 | 28.78 | c | 39.68 | 49.53 | 53.29 | 53.55 | 53.00 | 39.81 | 23.70 | 24.94 | 33.44 | ||||||||||||
2024 | 13.84 | 18.38 | 20.35 | 30.28 | l | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 17.52 | i | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 1.91 | 2.94 | 15.19 | 27.72 | 38.49 | 47.85 | 53.65 | 52.21 | 44.70 | 33.90 | 23.14 | 9.72 | 30.37 | |||||||||||||
S.D. | 7.85 | 7.19 | 6.16 | 3.17 | 2.65 | 2.64 | 2.89 | 3.39 | 3.56 | 3.40 | 4.13 | 7.11 | 2.05 | |||||||||||||
SKEW | -0.17 | 0.76 | 0.06 | -0.48 | 0.17 | -0.51 | 0.01 | -0.89 | 0.05 | -0.10 | 0.07 | -0.17 | -0.35 | |||||||||||||
MAX | 18.32 | 23.70 | 29.19 | 33.20 | 43.52 | 52.77 | 58.32 | 58.39 | 53.00 | 41.61 | 31.17 | 24.94 | 33.47 | |||||||||||||
MIN | -14.16 | -10.92 | 3.52 | 20.60 | 33.13 | 40.19 | 48.41 | 43.61 | 37.33 | 25.70 | 14.00 | -4.84 | 26.89 | |||||||||||||
YRS | 39 | 40 | 40 | 37 | 39 | 40 | 40 | 43 | 38 | 40 | 33 | 35 | 22 |