YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1923 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1924 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
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 | ----- | 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 | 58.75 | w | 53.94 | 42.33 | 35.70 | d | 27.24 | e | 25.10 | j | 39.80 | h | ||
1959 | 18.59 | i | 22.20 | c | 27.90 | b | 33.29 | b | 37.46 | c | 45.38 | d | 51.07 | b | 46.30 | d | 42.61 | g | 32.62 | o | 22.76 | i | 24.71 | n | 37.66 | e |
1960 | 15.41 | i | 22.10 | i | 26.04 | f | 33.57 | 37.74 | 45.40 | 55.16 | 49.03 | 43.03 | 36.20 | a | 26.10 | 20.73 | a | 38.55 | c | |||||||
1961 | 21.74 | d | 29.50 | b | 29.43 | a | 34.00 | b | 42.37 | a | 50.00 | 52.94 | 54.26 | 40.47 | 31.00 | 20.80 | 19.26 | 35.48 | ||||||||
1962 | 14.06 | 23.61 | 23.97 | 34.67 | 37.81 | 43.60 | 45.85 | d | 47.39 | 42.80 | 36.61 | 30.25 | b | 26.94 | 33.96 | |||||||||||
1963 | 6.17 | b | 28.50 | b | 28.70 | a | 32.60 | 37.81 | j | 51.00 | 62.69 | e | ----- | z | 47.17 | x | 36.81 | 29.10 | a | 20.22 | d | 32.87 | c | |||
1964 | 22.37 | a | 18.97 | 24.92 | g | 31.03 | 38.61 | 47.90 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 16.71 | g | 31.78 | g | ||||
1965 | 24.29 | 18.82 | f | 21.41 | d | 34.28 | e | ----- | z | 44.31 | q | 49.65 | 51.93 | a | 39.18 | b | 37.34 | b | 32.31 | d | 25.59 | d | 35.11 | c | ||
1966 | ----- | z | ----- | z | 27.11 | l | 31.20 | 40.93 | a | 46.22 | c | 52.10 | a | 52.52 | 50.03 | 37.34 | b | 33.45 | a | 30.04 | e | 41.54 | c | |||
1967 | 24.39 | m | 27.00 | m | 29.25 | o | 31.53 | 40.74 | 49.10 | a | 52.07 | b | 54.32 | 49.23 | 37.17 | a | 31.00 | a | 24.29 | x | 43.15 | d | ||||
1968 | 19.04 | h | 24.89 | j | 29.68 | l | ----- | z | 37.95 | k | ----- | z | 53.95 | i | 48.30 | h | 43.81 | d | 33.42 | g | 28.40 | j | 15.85 | d | 29.83 | j |
1969 | 8.52 | 18.32 | 24.83 | b | 33.93 | 41.48 | 49.60 | 48.00 | 45.10 | 42.10 | 29.87 | 25.97 | 23.78 | d | 32.62 | |||||||||||
1970 | 19.26 | 24.68 | 27.61 | 30.27 | h | 38.45 | b | 50.60 | 54.16 | 51.13 | 39.07 | 32.19 | 27.50 | b | 20.35 | 35.00 | a | |||||||||
1971 | 22.96 | c | 24.79 | 24.74 | 32.93 | 42.68 | 45.63 | 52.32 | 54.94 | 40.63 | 33.06 | 29.40 | 18.81 | 35.24 | ||||||||||||
1972 | 14.84 | 22.55 | 30.55 | 30.33 | 42.10 | 47.43 | 50.84 | 52.52 | 38.03 | 30.94 | 30.23 | 15.42 | 33.81 | |||||||||||||
1973 | 18.81 | 26.43 | 30.03 | 32.30 | 39.90 | 42.37 | ----- | z | 52.45 | 43.63 | 36.90 | 27.87 | 27.48 | 34.38 | a | |||||||||||
1974 | 17.52 | 27.11 | 28.20 | a | 35.77 | 37.58 | 50.10 | 51.45 | 51.55 | 44.63 | 34.68 | 31.53 | 26.29 | 36.37 | ||||||||||||
1975 | 19.58 | 20.46 | 25.84 | 31.23 | 39.97 | 46.03 | 57.32 | 49.23 | 44.03 | 36.10 | 25.83 | 24.61 | 35.02 | |||||||||||||
1976 | 22.16 | 23.55 | 24.55 | 33.70 | 39.81 | 44.43 | 52.48 | 51.03 | 46.37 | 33.94 | 28.63 | 24.29 | 35.41 | |||||||||||||
1977 | 17.84 | 27.89 | 29.97 | 37.57 | 39.97 | 50.43 | 52.06 | 57.29 | 42.67 | 32.03 | 27.03 | 20.86 | b | 36.30 | ||||||||||||
1978 | 25.10 | a | 28.11 | 29.13 | 36.03 | 41.55 | 50.13 | 55.84 | 51.97 | 42.43 | 34.87 | 24.20 | 15.81 | 36.26 | ||||||||||||
1979 | 6.33 | a | 22.89 | 28.32 | 31.47 | 40.13 | 47.20 | 53.71 | 53.06 | 47.63 | 38.48 | 23.43 | 28.16 | 35.07 | ||||||||||||
1980 | 12.90 | 26.50 | a | 27.04 | e | 36.83 | 46.42 | 47.80 | 53.83 | g | 50.17 | b | 45.60 | 36.87 | 29.33 | 26.39 | 35.08 | a | ||||||||
1981 | 27.19 | 25.86 | 30.45 | 31.57 | 40.90 | 43.60 | j | 56.68 | 59.87 | 46.50 | 35.90 | 31.00 | 23.06 | 37.18 | a | |||||||||||
1982 | 19.57 | c | 22.33 | a | 32.71 | 37.17 | a | 41.10 | 49.37 | 52.42 | 51.58 | 46.97 | 36.39 | 25.77 | 21.66 | b | 36.42 | |||||||||
1983 | 26.26 | 23.89 | 34.00 | 33.17 | 41.97 | 45.47 | 49.23 | 53.65 | 43.57 | 35.42 | 30.73 | 13.77 | 35.93 | |||||||||||||
1984 | 21.52 | 28.79 | 37.39 | 37.30 | 45.65 | 49.97 | a | 55.45 | 56.65 | 45.33 | 35.16 | 29.67 | 16.80 | a | 38.31 | |||||||||||
1985 | 20.77 | 20.75 | 29.74 | 37.50 | 45.65 | 46.53 | 59.61 | 53.55 | 49.03 | 38.81 | 22.67 | 19.06 | 36.97 | |||||||||||||
1986 | 24.97 | a | 25.50 | 37.16 | 36.80 | 44.94 | 54.33 | 52.97 | 57.35 | 46.53 | 41.39 | 33.48 | c | 26.03 | 40.12 | |||||||||||
1987 | 26.48 | 32.43 | 35.90 | b | 41.97 | 46.55 | 52.03 | 55.03 | 52.87 | 48.57 | 36.97 | 35.07 | 20.21 | b | 40.34 | |||||||||||
1988 | 20.81 | 27.34 | 32.90 | 41.50 | 45.52 | 49.67 | 56.65 | 55.35 | 51.53 | 43.10 | 27.53 | 18.52 | 39.20 | |||||||||||||
1989 | 17.94 | 11.11 | 26.58 | 37.77 | 41.42 | 49.27 | 52.90 | 52.81 | 40.57 | 21.74 | ----- | z | 20.12 | g | 35.21 | b | ||||||||||
1990 | 19.55 | 15.96 | 22.32 | 27.63 | 33.77 | 41.80 | 54.40 | f | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 26.84 | f | ||||||
1991 | ----- | z | 25.20 | w | ----- | z | ----- | z | 34.73 | a | 38.37 | 49.42 | ----- | z | ----- | z | 35.72 | b | 29.77 | 27.40 | a | 35.90 | f | |||
1992 | ----- | z | 31.97 | 33.43 | a | 38.13 | ----- | z | 55.10 | a | 55.03 | 54.43 | a | 42.82 | b | 33.77 | 25.87 | 17.55 | 38.81 | b | ||||||
1993 | 16.59 | b | 20.21 | 29.97 | 36.24 | a | ----- | z | 48.80 | 50.03 | b | 52.06 | 46.27 | 39.39 | ----- | z | ----- | z | 37.73 | c | ||||||
1994 | ----- | z | 23.79 | d | 31.29 | 39.93 | 44.71 | 47.93 | 58.77 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 41.07 | f | |||||
1995 | ----- | z | ----- | z | 28.93 | a | 36.33 | 45.00 | ----- | z | 52.53 | a | 45.90 | 46.93 | 33.13 | 19.00 | u | 24.44 | m | 41.25 | e | |||||
1996 | 19.42 | g | 23.87 | f | 25.37 | a | 36.43 | 37.39 | 45.17 | a | 50.74 | 51.17 | b | 42.97 | a | 36.90 | 28.70 | 21.81 | d | 37.67 | b | |||||
1997 | 23.40 | a | 23.63 | a | 29.81 | 33.73 | 45.97 | 47.97 | 52.19 | e | 54.71 | 48.57 | 36.71 | 28.97 | a | 24.17 | a | 37.48 | ||||||||
1998 | 24.71 | 30.52 | a | 32.58 | 35.00 | 43.17 | a | ----- | z | 52.97 | 51.42 | 49.43 | 32.26 | 26.24 | m | 20.11 | c | 37.22 | b | |||||||
1999 | 22.07 | a | 22.21 | 26.74 | 32.57 | 39.45 | b | 50.26 | c | 47.53 | a | 52.20 | a | 41.03 | a | 31.29 | 30.41 | c | 25.16 | 35.08 | ||||||
2000 | 20.63 | a | 25.44 | b | 29.00 | 36.43 | 37.03 | 47.20 | 52.77 | 51.10 | 38.76 | e | 32.46 | c | 17.67 | l | ----- | z | 37.08 | b | ||||||
2001 | 16.48 | d | ----- | z | 23.08 | g | 27.25 | f | 34.44 | f | 40.52 | g | 45.04 | g | 49.50 | c | 43.18 | h | 29.76 | b | 26.75 | f | 19.00 | n | 31.91 | i |
2002 | 21.32 | c | 20.59 | a | 21.08 | e | 31.38 | d | 36.14 | c | 43.12 | d | 50.65 | e | 45.96 | c | 38.89 | b | 26.24 | j | 26.04 | c | ----- | z | 33.52 | b |
2003 | 22.26 | 20.88 | d | 27.73 | e | 28.80 | 36.16 | ----- | z | 44.11 | d | 42.24 | j | 35.60 | e | 27.14 | i | ----- | z | ----- | z | 30.79 | e | |||
2004 | 18.07 | q | 22.68 | d | 21.61 | h | 26.05 | j | 30.63 | l | 39.86 | h | 45.56 | d | 48.26 | h | 33.84 | k | 28.47 | l | 20.14 | p | 13.75 | w | 34.12 | j |
2005 | 13.75 | o | 14.50 | j | 22.81 | j | 29.76 | m | 34.50 | m | 39.67 | l | 43.00 | q | 41.62 | e | 34.87 | o | 33.06 | n | 21.00 | i | 7.69 | r | 41.62 | k |
2006 | 21.60 | k | 14.35 | k | 21.71 | n | 30.58 | k | 34.52 | j | 40.90 | j | 43.64 | i | 47.00 | o | 42.94 | n | 35.42 | ----- | z | ----- | z | 35.42 | k | |
2007 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 41.12 | m | 37.39 | 18.87 | 14.67 | a | 23.64 | i | ||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 19.63 | 24.11 | 28.88 | 34.53 | 40.84 | 47.70 | 52.57 | 51.85 | 44.04 | 35.05 | 28.16 | 21.79 | 36.27 | |||||||||||||
S.D. | 5.24 | 4.36 | 3.94 | 3.19 | 3.39 | 3.37 | 3.76 | 3.61 | 3.78 | 3.61 | 3.52 | 4.35 | 2.02 | |||||||||||||
SKEW | -1.05 | -0.48 | 0.16 | 0.22 | -0.00 | -0.35 | 0.18 | -0.55 | -0.06 | -1.03 | -0.53 | -0.05 | 0.50 | |||||||||||||
MAX | 27.19 | 32.43 | 37.39 | 41.97 | 46.55 | 55.10 | 62.69 | 59.87 | 51.53 | 43.10 | 35.07 | 30.04 | 40.34 | |||||||||||||
MIN | 6.17 | 11.11 | 21.08 | 27.63 | 33.77 | 38.37 | 44.11 | 41.62 | 35.60 | 21.74 | 18.87 | 13.77 | 32.62 | |||||||||||||
YRS | 35 | 37 | 38 | 41 | 39 | 38 | 40 | 40 | 39 | 41 | 35 | 34 | 20 |