YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1922 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 33.80 | u | ----- | z |
1923 | 27.58 | 19.00 | 29.42 | 34.53 | 39.48 | 43.43 | 54.03 | 54.71 | 49.10 | 38.68 | 34.53 | 25.16 | 37.47 | |||||||||||||
1924 | 21.00 | 33.76 | 28.68 | 33.60 | 43.68 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 32.14 | g | |||||
1925 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 56.52 | j | 52.26 | 46.63 | 37.16 | 31.14 | b | 29.81 | 39.40 | g | ||||
1926 | 26.00 | a | 32.46 | 33.90 | 40.62 | a | 41.81 | 50.27 | 54.97 | 53.35 | 41.07 | 39.10 | 32.24 | a | 24.10 | 39.16 | ||||||||||
1927 | 20.19 | 29.81 | a | 29.00 | 32.60 | 37.00 | 49.13 | 53.03 | 53.03 | 44.59 | a | 39.60 | a | 35.14 | a | 20.23 | a | 36.95 | ||||||||
1928 | 22.55 | 26.69 | 33.07 | a | 32.79 | b | 42.61 | 45.57 | 54.17 | a | 51.87 | 45.90 | a | 37.38 | b | 32.17 | 22.52 | 37.27 | ||||||||
1929 | 15.29 | 13.29 | 30.24 | b | 31.80 | 39.30 | d | 46.13 | 51.30 | a | 54.10 | 45.47 | 40.45 | 29.21 | a | 30.84 | 35.62 | |||||||||
1930 | 5.84 | 32.93 | 31.94 | 38.27 | 39.26 | 44.30 | 52.58 | 54.77 | 48.03 | 35.55 | 28.76 | a | 24.77 | 36.42 | ||||||||||||
1931 | 28.06 | 26.43 | 30.97 | 36.17 | a | 44.71 | 46.21 | a | 54.84 | 52.52 | 42.83 | 38.13 | 26.76 | a | 21.10 | 37.39 | ||||||||||
1932 | 24.27 | a | 22.55 | 32.10 | 35.10 | a | 41.53 | a | 47.97 | a | 48.52 | 50.40 | a | 47.23 | 40.52 | 33.86 | a | 19.03 | 36.92 | |||||||
1933 | 23.94 | 21.44 | a | 29.61 | 33.27 | 36.00 | 47.90 | a | 54.87 | 53.90 | 41.30 | 40.97 | 31.80 | 32.57 | a | 37.30 | ||||||||||
1934 | 31.87 | 31.62 | b | 36.48 | 42.27 | 43.94 | 47.23 | 51.29 | 53.52 | 44.63 | 41.23 | 35.23 | d | 27.94 | 40.60 | |||||||||||
1935 | 23.65 | 26.68 | 27.84 | 32.14 | a | 38.29 | 46.67 | 52.23 | 51.87 | 50.53 | 38.37 | a | 26.67 | 23.90 | 36.57 | |||||||||||
1936 | 28.23 | 12.14 | a | 29.73 | a | 37.47 | 43.74 | 49.63 | 53.35 | 52.74 | 46.30 | 40.94 | 26.23 | 27.87 | 37.37 | |||||||||||
1937 | 5.71 | 25.00 | 32.61 | 32.86 | a | 40.37 | a | 50.60 | 54.03 | 50.68 | 48.03 | 41.45 | 33.93 | 29.45 | 37.06 | |||||||||||
1938 | 27.33 | a | 25.07 | 30.32 | 35.73 | 41.26 | 48.93 | 56.55 | 49.45 | 50.93 | 38.68 | 26.17 | 26.19 | 38.05 | ||||||||||||
1939 | 28.13 | 23.57 | 31.19 | 35.57 | 40.90 | 43.97 | 54.35 | 53.29 | 47.00 | 35.29 | 31.27 | 30.74 | 37.94 | |||||||||||||
1940 | 21.81 | 29.97 | 33.77 | 35.20 | 42.81 | 48.80 | 52.45 | 53.26 | 49.40 | 41.65 | 27.50 | 26.70 | a | 38.61 | ||||||||||||
1941 | 25.10 | 29.89 | 33.61 | 37.73 | 40.90 | 46.03 | 55.32 | 52.39 | 44.37 | 38.07 | a | 33.50 | 28.00 | 38.74 | ||||||||||||
1942 | 13.55 | 26.54 | 28.48 | 34.43 | 38.77 | 43.63 | 54.03 | 53.52 | 47.47 | 39.42 | 29.30 | 28.23 | 36.45 | |||||||||||||
1943 | 15.74 | 25.96 | 28.19 | 36.53 | 36.06 | 42.70 | 51.77 | 49.00 | 49.43 | 38.84 | 30.33 | 23.94 | 35.71 | |||||||||||||
1944 | 22.03 | 24.69 | 27.10 | 33.20 | 39.55 | 45.03 | 51.90 | 49.94 | 48.20 | 41.90 | 28.77 | 22.48 | 36.23 | |||||||||||||
1945 | 27.58 | 27.46 | 28.55 | 31.60 | 41.81 | 43.63 | 51.77 | 52.58 | 44.73 | 40.58 | 30.64 | b | 24.87 | 37.15 | ||||||||||||
1946 | 28.19 | 28.93 | 30.55 | 34.20 | 41.55 | 45.20 | 52.03 | 53.35 | 44.33 | 34.48 | 26.90 | 27.32 | 37.25 | |||||||||||||
1947 | 21.87 | a | 29.57 | 33.90 | 37.47 | 45.03 | 45.37 | 50.71 | 49.77 | 47.47 | 39.94 | 32.10 | 30.06 | 38.60 | ||||||||||||
1948 | 25.48 | 21.68 | a | 27.97 | 32.60 | 39.71 | 49.87 | 49.00 | 48.77 | 43.80 | 35.90 | 29.43 | 21.06 | 35.44 | ||||||||||||
1949 | 8.00 | 22.86 | 30.32 | 35.13 | g | 43.77 | 44.15 | c | 49.97 | 49.10 | 45.30 | g | 31.54 | g | 33.20 | 25.77 | 34.13 | c | ||||||||
1950 | 7.06 | 21.96 | a | 28.90 | 31.83 | 37.52 | 47.43 | 52.29 | 53.65 | 47.70 | 38.30 | d | 30.67 | c | 30.94 | 35.69 | ||||||||||
1951 | 21.12 | e | 26.46 | 25.56 | f | 35.23 | 39.13 | 48.64 | e | 53.48 | 50.74 | 47.94 | m | 38.06 | 28.83 | 21.94 | 36.36 | b | ||||||||
1952 | 18.81 | 27.69 | 28.00 | 34.33 | 40.35 | 45.00 | b | 53.58 | 52.35 | 49.73 | 42.68 | 23.37 | 25.55 | 36.79 | ||||||||||||
1953 | 34.29 | 29.36 | c | 30.13 | 32.57 | 37.61 | 41.63 | 51.68 | c | 51.35 | 47.47 | 42.23 | a | 33.41 | a | 29.90 | 38.47 | |||||||||
1954 | 23.35 | 28.61 | 25.90 | 32.37 | 40.71 | 44.62 | d | 48.79 | c | 48.13 | a | 45.03 | 35.66 | b | 35.41 | a | 23.23 | 35.98 | ||||||||
1955 | 24.32 | 23.75 | 25.00 | 29.97 | 36.93 | a | 46.37 | 49.16 | 51.27 | a | 47.30 | 38.68 | 25.33 | 23.48 | 35.13 | |||||||||||
1956 | 25.77 | 20.83 | 29.32 | c | 36.07 | b | 44.14 | b | 44.89 | c | 55.45 | 51.65 | 48.00 | 36.74 | 27.77 | 26.45 | 37.26 | |||||||||
1957 | 9.00 | 24.36 | 31.19 | 36.13 | 44.71 | 48.50 | 50.58 | 49.35 | 49.57 | 36.90 | 29.62 | a | 31.10 | 36.75 | ||||||||||||
1958 | 28.10 | 34.57 | 29.06 | 34.33 | 46.39 | 50.77 | 56.97 | a | 57.30 | a | 45.43 | 40.48 | 29.14 | a | 29.45 | 40.17 | ||||||||||
1959 | 26.29 | 26.86 | 30.35 | 34.07 | 37.48 | 46.07 | 54.20 | a | 50.55 | 45.37 | 38.68 | 29.35 | d | 24.65 | 36.99 | |||||||||||
1960 | 18.03 | 26.14 | 34.00 | ----- | z | ----- | z | 44.93 | 56.71 | 50.03 | a | 47.30 | 40.87 | 29.57 | 23.48 | 37.11 | b | |||||||||
1961 | 27.84 | 32.54 | 32.42 | 35.11 | b | 40.84 | 52.00 | 55.29 | 58.55 | b | 42.24 | a | 36.26 | 25.50 | 26.84 | 38.78 | ||||||||||
1962 | 22.39 | 27.29 | 29.61 | 37.70 | 37.65 | 45.33 | 51.68 | 51.03 | a | 48.13 | 39.26 | 32.70 | 28.97 | 37.64 | ||||||||||||
1963 | 17.71 | 32.89 | 30.71 | 32.33 | 42.04 | c | 46.00 | c | 48.19 | 54.55 | b | 43.21 | a | 35.21 | l | 31.79 | a | 24.61 | 36.73 | a | ||||||
1964 | 26.00 | 27.14 | a | 27.32 | 31.23 | 36.52 | 45.70 | 51.84 | 48.35 | 42.77 | 37.81 | e | 28.70 | 24.76 | b | 35.68 | ||||||||||
1965 | 26.68 | 30.89 | 27.36 | c | 33.71 | f | 35.64 | t | 44.73 | 53.81 | 53.35 | 42.30 | 41.65 | 34.50 | 25.45 | 38.07 | b | |||||||||
1966 | 26.84 | 27.29 | 30.00 | 33.77 | 40.68 | 44.47 | 50.35 | 52.03 | 47.23 | 38.13 | 32.50 | 30.16 | 37.79 | |||||||||||||
1967 | 30.48 | 29.75 | 28.35 | 30.53 | 40.10 | 49.10 | 54.61 | c | 57.29 | 49.69 | a | 37.73 | a | 31.85 | d | 23.54 | e | 38.59 | ||||||||
1968 | 25.23 | a | 31.21 | 32.87 | 32.10 | 40.58 | 46.93 | 54.35 | 51.63 | a | 46.03 | 35.87 | 30.90 | 21.55 | 37.44 | |||||||||||
1969 | 12.23 | 22.89 | 31.06 | 33.53 | 43.77 | 51.73 | 51.45 | 48.94 | 46.23 | 34.90 | 31.28 | a | 25.23 | 36.10 | ||||||||||||
1970 | 23.52 | 29.29 | 29.97 | 29.37 | 37.97 | 50.37 | 52.55 | 51.42 | 39.70 | 33.90 | a | 29.57 | 24.87 | 36.04 | ||||||||||||
1971 | 28.55 | 27.50 | 27.16 | 31.93 | 39.55 | 41.83 | 52.71 | 52.61 | 40.17 | 34.46 | c | 29.71 | b | 25.07 | a | 35.94 | ||||||||||
1972 | 23.23 | 25.59 | 32.59 | b | 29.20 | 39.94 | 45.33 | 52.10 | a | 53.00 | 40.92 | d | 33.81 | 29.77 | 17.25 | c | 35.23 | |||||||||
1973 | 19.29 | 26.46 | 28.30 | a | 31.73 | 39.00 | 43.22 | l | 51.74 | 47.84 | 44.93 | 35.86 | b | 28.03 | 28.97 | a | 34.74 | a | ||||||||
1974 | 16.58 | 27.86 | 28.97 | a | 32.50 | 34.97 | a | 45.47 | o | 49.75 | c | 51.00 | g | 45.30 | c | 34.84 | 29.63 | 25.32 | 32.57 | b | ||||||
1975 | 22.77 | a | 19.32 | c | 24.47 | a | 25.15 | c | 33.52 | b | 40.10 | 53.93 | a | 47.90 | b | 45.90 | 37.07 | c | 28.33 | 27.70 | a | 33.85 | ||||
1976 | 26.90 | b | 25.03 | 26.44 | f | 30.93 | b | 35.97 | 37.38 | n | 49.29 | g | 49.65 | 46.96 | c | 36.74 | 32.24 | a | 23.00 | a | 34.16 | c | ||||
1977 | 18.79 | b | 26.46 | 27.32 | 34.55 | a | 35.59 | b | 46.27 | o | 49.28 | b | 56.13 | 41.37 | 35.80 | a | 25.21 | b | 25.87 | 34.22 | a | |||||
1978 | 24.37 | a | 28.59 | a | 32.48 | 32.93 | 35.52 | b | 45.07 | c | 52.93 | q | 51.93 | a | 42.93 | 34.27 | a | 21.42 | d | 17.74 | 33.39 | a | ||||
1979 | 5.87 | 24.92 | c | 30.84 | 34.07 | 39.77 | 44.15 | c | 50.15 | d | 51.05 | j | 47.53 | 40.50 | a | 25.67 | c | 27.20 | a | 33.70 | a | |||||
1980 | 16.39 | 26.64 | a | 28.81 | 34.55 | a | 38.00 | a | 40.88 | d | 49.45 | 46.75 | g | 43.93 | a | 35.26 | 29.00 | 25.42 | g | 34.29 | b | |||||
1981 | 25.30 | a | 24.43 | 30.00 | c | 31.80 | 36.65 | 43.31 | n | 49.23 | 53.84 | 44.47 | 34.63 | a | 28.91 | g | 24.93 | b | 35.53 | b | ||||||
1982 | 22.16 | 22.00 | c | 27.23 | a | 28.57 | 36.07 | a | 42.41 | m | 50.39 | 51.97 | 45.04 | b | 36.39 | 26.93 | 25.69 | e | 33.86 | a | ||||||
1983 | 29.27 | a | 32.17 | d | 35.48 | d | 33.76 | a | 42.35 | 42.56 | l | 48.97 | b | 53.23 | 41.70 | 38.03 | 33.47 | 17.00 | a | 36.86 | a | |||||
1984 | 25.74 | 28.62 | e | 33.76 | f | 33.03 | a | 36.37 | d | 43.04 | b | 52.04 | e | 50.81 | 43.61 | l | 34.68 | c | 28.96 | e | 19.23 | i | 37.03 | c | ||
1985 | 19.85 | d | 21.89 | j | 28.41 | b | 36.81 | c | 38.90 | b | 47.08 | e | 56.58 | 49.97 | 42.00 | 35.17 | a | 19.73 | d | 10.83 | m | 37.45 | b | |||
1986 | 28.00 | i | 28.64 | f | 35.53 | a | 32.23 | d | 39.89 | c | 51.59 | c | 48.07 | b | 55.90 | b | 42.43 | 39.27 | a | 32.03 | a | 23.20 | a | 40.01 | b | |
1987 | 22.46 | c | 28.79 | d | 32.10 | 37.64 | b | 42.86 | b | 48.52 | a | 49.57 | a | 50.97 | 47.30 | 39.77 | a | 30.66 | a | 22.61 | 37.77 | |||||
1988 | 22.80 | a | 28.24 | 29.81 | 35.79 | b | 37.29 | c | 45.30 | 52.30 | a | 49.43 | a | 45.41 | c | 43.14 | b | 31.80 | 23.65 | 37.08 | ||||||
1989 | 26.40 | a | 14.52 | a | 28.90 | 37.53 | 38.90 | 47.00 | b | 49.04 | f | 49.90 | a | 47.30 | 38.23 | 34.33 | 24.00 | a | 35.18 | a | ||||||
1990 | 28.73 | a | 24.50 | f | 31.55 | 38.17 | 37.90 | 46.17 | 54.67 | a | 54.63 | a | 49.69 | a | 35.86 | b | 33.29 | b | 14.50 | a | 38.65 | a | ||||
1991 | 23.06 | 33.37 | a | 29.17 | a | 33.30 | 37.60 | a | 42.46 | b | 52.87 | a | 54.17 | b | 48.27 | 37.94 | 31.24 | a | 28.23 | 37.64 | ||||||
1992 | 29.61 | 33.14 | a | 34.77 | 38.67 | 43.67 | a | 50.77 | 51.83 | a | 53.87 | 44.39 | b | 40.33 | a | 31.07 | a | 21.14 | b | 39.44 | ||||||
1993 | 16.26 | 18.96 | a | 31.07 | a | 34.31 | a | 44.35 | 44.73 | 45.71 | 50.06 | 45.79 | b | 40.90 | b | 20.97 | a | 26.19 | 34.94 | |||||||
1994 | 30.25 | c | 23.00 | a | 32.57 | a | 36.31 | a | 41.71 | 44.23 | 52.45 | b | 49.52 | b | 49.23 | 35.13 | 26.57 | 25.37 | a | 37.19 | ||||||
1995 | 23.42 | e | 30.93 | 30.10 | 33.86 | a | 42.06 | 45.43 | 52.32 | 48.32 | 48.80 | 35.47 | a | 35.27 | 25.10 | 37.59 | ||||||||||
1996 | 26.13 | a | 20.69 | 30.97 | 35.70 | 36.45 | 44.17 | 55.00 | a | 52.29 | 44.00 | 36.57 | a | 29.04 | f | 24.73 | a | 36.97 | a | |||||||
1997 | 23.87 | a | 27.79 | 31.53 | a | 33.82 | b | 43.39 | 44.70 | 51.35 | 54.24 | b | 47.87 | 37.16 | 32.47 | 26.00 | b | 37.85 | ||||||||
1998 | 26.63 | a | 30.57 | 32.10 | 34.50 | 41.23 | 46.76 | a | 56.43 | a | 53.81 | 50.23 | 36.03 | 34.57 | 24.81 | 38.97 | ||||||||||
1999 | 30.23 | 29.61 | 30.10 | 31.67 | c | 37.11 | c | 45.70 | 49.93 | a | 54.13 | 45.27 | 37.45 | 35.97 | 28.53 | a | 37.97 | |||||||||
2000 | 24.93 | a | 29.03 | 31.45 | 37.50 | 41.55 | 47.13 | 50.74 | 50.00 | 44.87 | 37.00 | 25.21 | a | 23.94 | 36.95 | |||||||||||
2001 | 25.65 | 25.85 | a | 31.26 | 32.32 | b | 41.65 | 43.57 | 51.94 | 54.23 | 48.93 | 36.94 | 33.40 | 26.60 | a | 37.69 | ||||||||||
2002 | 26.67 | a | 26.75 | 26.42 | 33.70 | 39.55 | 48.07 | 53.32 | 48.63 | a | 45.53 | 33.58 | 28.63 | 28.19 | 36.59 | |||||||||||
2003 | 31.20 | a | 26.54 | 33.58 | 32.63 | 40.19 | 47.60 | 54.29 | 53.97 | 48.23 | 40.71 | 26.37 | 25.60 | a | 38.41 | |||||||||||
2004 | 21.27 | a | 27.48 | b | 34.42 | 35.75 | b | ----- | z | 47.27 | 53.40 | a | 54.84 | 44.80 | 38.17 | b | ----- | z | ----- | z | 39.71 | c | ||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 22.86 | 26.57 | 30.39 | 34.07 | 39.98 | 46.25 | 52.32 | 52.04 | 45.91 | 37.93 | 30.01 | 25.31 | 37.22 | |||||||||||||
S.D. | 6.28 | 4.50 | 2.48 | 2.75 | 2.82 | 2.63 | 2.34 | 2.36 | 2.68 | 2.41 | 3.47 | 3.48 | 1.30 | |||||||||||||
SKEW | -1.13 | -0.88 | 0.14 | 0.04 | 0.04 | 0.20 | -0.18 | 0.25 | -0.29 | 0.15 | -0.62 | -0.53 | 0.10 | |||||||||||||
MAX | 34.29 | 34.57 | 36.48 | 42.27 | 46.39 | 52.00 | 56.97 | 58.55 | 50.93 | 43.14 | 35.97 | 32.57 | 40.60 | |||||||||||||
MIN | 5.71 | 12.14 | 24.47 | 25.15 | 33.52 | 40.10 | 45.71 | 47.84 | 39.70 | 33.58 | 19.73 | 14.50 | 33.85 | |||||||||||||
YRS | 80 | 78 | 78 | 78 | 78 | 73 | 77 | 78 | 78 | 79 | 78 | 77 | 58 |