YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1925 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1926 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1927 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1928 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1929 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
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 | ----- | z | ----- | z | 38.98 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 38.98 | k | |
1945 | ----- | z | ----- | z | ----- | z | ----- | z | 50.43 | a | 56.93 | 68.74 | 67.00 | 59.40 | 51.03 | 34.25 | 28.45 | 52.03 | d | |||||||
1946 | 23.45 | 27.45 | 35.97 | 46.20 | 52.74 | 57.08 | 67.65 | 67.89 | 56.10 | 42.25 | a | 35.25 | 32.66 | 45.39 | ||||||||||||
1947 | 27.39 | 37.82 | 40.23 | 45.67 | 57.66 | b | 54.85 | 64.60 | 63.66 | 59.22 | 49.13 | 36.32 | 32.18 | 47.39 | ||||||||||||
1948 | 34.02 | 30.53 | 33.29 | 37.62 | 47.69 | 58.72 | 64.42 | 63.31 | 56.30 | 48.87 | 34.77 | 21.47 | 44.25 | |||||||||||||
1949 | 12.79 | 26.88 | 35.50 | 48.19 | a | 53.50 | 58.83 | 67.60 | 65.13 | 60.37 | 44.61 | 44.32 | 26.89 | 45.38 | ||||||||||||
1950 | 19.27 | 31.75 | 34.89 | 42.36 | a | 50.65 | 57.32 | 69.82 | 68.58 | 59.00 | 48.95 | 41.15 | 37.74 | 46.79 | ||||||||||||
1951 | 27.73 | 32.93 | 33.18 | 48.90 | 51.21 | 62.38 | 68.77 | 67.02 | 61.72 | 45.25 | a | 37.30 | 25.82 | 46.85 | ||||||||||||
1952 | 24.42 | 27.90 | 30.27 | a | 44.88 | 53.24 | 55.80 | 68.00 | a | 65.58 | a | 62.68 | 57.83 | h | 26.75 | x | 27.61 | 46.04 | b | |||||||
1953 | 34.23 | 34.24 | a | 35.56 | 41.53 | 43.82 | 51.83 | a | 68.92 | 63.76 | 63.30 | 47.56 | e | 41.75 | v | 32.47 | a | 47.02 | a | |||||||
1954 | 29.03 | 34.93 | a | 33.82 | 45.63 | 54.56 | 54.25 | 68.19 | 61.82 | a | 55.90 | 47.85 | 41.63 | 28.94 | 46.38 | |||||||||||
1955 | 21.42 | 25.11 | 32.94 | 37.00 | a | 49.56 | 60.57 | 63.82 | 68.98 | a | 58.62 | 50.32 | ----- | z | 30.15 | 45.32 | a | |||||||||
1956 | 29.47 | 25.68 | a | 33.65 | 44.88 | 52.26 | 56.53 | 67.82 | 63.47 | 58.43 | 46.54 | e | ----- | z | ----- | z | 47.87 | b | ||||||||
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 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
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 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1971 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1972 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
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 | ----- | 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 | ----- | 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 | 31.88 | k | 35.16 | j | 37.83 | k | 46.12 | i | 49.74 | j | 60.74 | i | 64.90 | b | 66.46 | e | 55.15 | f | 45.45 | i | 33.34 | e | 33.40 | g | 54.90 | i |
2001 | 31.44 | e | 30.93 | e | 39.80 | h | 38.48 | g | 54.24 | n | 57.31 | l | 64.60 | k | 66.31 | m | 59.79 | k | 49.88 | e | 37.46 | d | 29.10 | b | 35.77 | g |
2002 | 30.31 | j | 34.36 | f | 35.41 | b | 44.56 | d | 49.30 | f | 59.81 | f | 69.75 | c | 65.13 | e | 59.87 | c | 44.19 | m | 39.38 | e | 38.07 | x | 52.35 | f |
2003 | 40.56 | w | 34.80 | 38.81 | 38.55 | 49.92 | 62.23 | 70.97 | 65.08 | a | 61.05 | a | 52.53 | 32.68 | b | 31.15 | a | 48.89 | a | |||||||
2004 | 31.02 | 30.41 | a | 42.52 | 44.07 | 48.63 | 58.33 | 67.76 | 65.97 | 55.58 | 46.52 | a | 36.27 | 34.45 | 46.79 | |||||||||||
2005 | 32.40 | 35.68 | 39.81 | 41.12 | 48.95 | a | 52.43 | a | 69.82 | f | 67.37 | 55.08 | 47.10 | 37.85 | 31.85 | 44.51 | a | |||||||||
2006 | 32.05 | 32.50 | 32.03 | 42.08 | 53.22 | a | 65.42 | l | 70.40 | a | 64.76 | 58.45 | 46.68 | 36.70 | 31.21 | 45.46 | a | |||||||||
2007 | 28.21 | 33.59 | 41.17 | b | 43.42 | 52.48 | 58.13 | 69.52 | 65.77 | 55.78 | 43.47 | 39.55 | 25.53 | 46.39 | ||||||||||||
2008 | 25.35 | 29.89 | a | 33.65 | 39.43 | a | 50.23 | 56.28 | 68.16 | 66.76 | 58.92 | 48.52 | 41.22 | 28.93 | a | 45.61 | ||||||||||
2009 | 32.40 | a | 32.32 | 35.08 | 41.75 | 52.85 | 56.98 | 68.18 | 65.33 | b | 61.62 | 44.32 | 35.48 | 27.13 | 46.12 | |||||||||||
2010 | 35.13 | 35.38 | 37.18 | 38.15 | 43.32 | 55.60 | 67.50 | a | 65.61 | c | 56.02 | 49.29 | 37.08 | d | 33.57 | a | 46.15 | |||||||||
2011 | 33.02 | c | 31.48 | b | 34.44 | 37.48 | a | 43.76 | 54.39 | b | 63.76 | 66.59 | b | 61.27 | 47.32 | 34.67 | 31.29 | 44.95 | ||||||||
2012 | 32.13 | 31.84 | 35.03 | b | 43.02 | 49.35 | 55.75 | b | 66.00 | 67.89 | 61.77 | 48.45 | 38.90 | 27.19 | 46.44 | |||||||||||
2013 | 28.25 | e | 31.64 | 39.48 | 42.93 | 50.10 | 59.10 | 70.81 | 63.89 | 58.52 | c | 44.76 | 38.60 | 29.80 | c | 46.49 | ||||||||||
2014 | 36.37 | 35.16 | 40.02 | 43.14 | a | 51.13 | 58.32 | 71.42 | 66.32 | 60.17 | 49.50 | 38.83 | 35.39 | 48.81 | ||||||||||||
2015 | 37.30 | a | 40.75 | 43.19 | 41.93 | 50.81 | 64.93 | 66.87 | 65.35 | 57.45 | a | 51.50 | 33.53 | 27.65 | a | 48.44 | ||||||||||
2016 | 31.39 | c | 36.55 | 38.16 | 47.53 | a | 50.66 | 59.88 | a | 65.71 | b | 67.21 | 56.08 | 45.80 | d | 39.67 | 26.35 | 47.08 | ||||||||
2017 | 25.91 | b | 33.78 | a | 39.12 | a | 40.12 | 52.18 | 60.64 | b | 69.69 | b | 69.30 | a | 60.48 | c | 44.77 | 37.40 | 31.03 | 47.04 | ||||||
2018 | 35.85 | 32.50 | d | 33.88 | c | 42.68 | 53.76 | 58.14 | a | 68.42 | 65.92 | 56.37 | 46.08 | 37.37 | 28.73 | 46.64 | ||||||||||
2019 | 33.11 | 27.77 | d | 34.69 | 44.92 | 49.84 | 58.23 | 64.97 | 67.08 | a | 56.43 | c | 41.37 | 39.50 | 31.97 | 45.82 | ||||||||||
2020 | 31.90 | 34.64 | 35.82 | 43.73 | 50.69 | 57.95 | a | 66.45 | 67.71 | 61.55 | 50.15 | 35.83 | 30.98 | 47.28 | ||||||||||||
2021 | 30.87 | 31.32 | 35.29 | 43.40 | 51.24 | 64.37 | 72.76 | 66.08 | 58.60 | a | 45.26 | 39.28 | 29.66 | 47.34 | ||||||||||||
2022 | 32.95 | b | 33.38 | 40.55 | 38.07 | 46.30 | a | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 38.25 | g | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 29.69 | 32.24 | 36.39 | 42.54 | 50.52 | 57.89 | 67.89 | 65.99 | 58.82 | 47.28 | 37.52 | 29.91 | 46.52 | |||||||||||||
S.D. | 5.35 | 3.51 | 3.23 | 3.19 | 3.11 | 3.08 | 2.29 | 1.73 | 2.36 | 2.72 | 2.71 | 3.27 | 1.04 | |||||||||||||
SKEW | -1.23 | -0.05 | 0.41 | -0.03 | -0.57 | 0.36 | -0.08 | -0.24 | 0.08 | -0.18 | 0.30 | -0.04 | 0.08 | |||||||||||||
MAX | 37.30 | 40.75 | 43.19 | 48.90 | 57.66 | 64.93 | 72.76 | 69.30 | 63.30 | 52.53 | 44.32 | 37.74 | 48.81 | |||||||||||||
MIN | 12.79 | 25.11 | 30.27 | 37.00 | 43.32 | 51.83 | 63.76 | 61.82 | 55.08 | 41.37 | 32.68 | 21.47 | 44.25 | |||||||||||||
YRS | 31 | 32 | 32 | 33 | 32 | 30 | 32 | 33 | 32 | 31 | 30 | 31 | 23 |