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 | 90.75 | w | 89.71 | 71.86 | a | 61.89 | d | 42.56 | c | 35.91 | i | 66.50 | h | |
1959 | 31.64 | i | 36.96 | c | 47.68 | c | 60.29 | b | 62.36 | c | 75.64 | e | 88.07 | b | 79.81 | d | 67.52 | g | 54.24 | n | 39.29 | i | 37.12 | n | 64.40 | e |
1960 | 28.59 | i | 37.90 | i | 47.20 | f | 57.07 | b | 63.35 | 77.48 | a | 92.06 | 79.39 | 75.80 | 55.71 | 42.17 | 30.17 | a | 63.69 | c | ||||||
1961 | 32.03 | 39.61 | 45.58 | 55.43 | b | 66.26 | 83.30 | 87.43 | c | 90.86 | b | 69.86 | a | 56.38 | b | 40.07 | 32.68 | 58.29 | ||||||||
1962 | 30.94 | 38.86 | 43.94 | 63.34 | a | 61.13 | 74.23 | 83.74 | 80.40 | a | 74.67 | 55.29 | 42.48 | a | 35.70 | a | 57.06 | |||||||||
1963 | 22.63 | a | 42.12 | c | 49.10 | 52.47 | 64.14 | i | 73.20 | 83.70 | h | ----- | z | 78.14 | w | 60.29 | 41.03 | 31.72 | b | 46.57 | d | |||||
1964 | 34.55 | b | 39.38 | 42.29 | g | 54.40 | 62.94 | 70.93 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 33.29 | g | 52.44 | g | ||||
1965 | 32.77 | 38.13 | e | 44.85 | d | 57.04 | e | ----- | z | 75.54 | q | 85.16 | 82.50 | c | 69.22 | c | 64.90 | 42.54 | b | 36.04 | e | 55.32 | b | |||
1966 | ----- | z | ----- | z | 50.40 | k | 58.10 | 72.45 | b | 72.83 | 83.93 | a | 86.23 | 81.73 | 63.03 | 45.87 | 38.00 | f | 70.52 | d | ||||||
1967 | 38.05 | j | 47.80 | m | 47.00 | m | 53.70 | 64.90 | 78.11 | b | 87.10 | a | 92.68 | 84.60 | 58.14 | b | 43.46 | b | 34.00 | x | 70.34 | d | ||||
1968 | 34.10 | j | ----- | z | ----- | z | ----- | z | 65.19 | j | ----- | z | 87.04 | g | 76.11 | c | 74.12 | d | 54.48 | f | 39.85 | j | 29.11 | d | 59.78 | i |
1969 | 19.55 | 31.50 | 44.24 | b | 56.03 | 71.23 | 78.73 | 82.97 | 81.39 | 67.73 | 51.06 | 39.73 | 28.78 | d | 54.41 | |||||||||||
1970 | 28.52 | 40.25 | 45.84 | 50.41 | h | 64.34 | b | 80.97 | 87.13 | 88.26 | 68.53 | 55.26 | 40.97 | a | 31.74 | 57.44 | a | |||||||||
1971 | 34.67 | d | 38.04 | 40.87 | 56.17 | 70.23 | 69.40 | 85.71 | 91.19 | 65.67 | 54.90 | 39.33 | 29.58 | 56.31 | ||||||||||||
1972 | 28.90 | 36.21 | 48.87 | 51.57 | 66.39 | 73.27 | 79.81 | 89.26 | 65.47 | 58.29 | 40.43 | 28.52 | 55.58 | |||||||||||||
1973 | 31.65 | 40.50 | 49.00 | 59.30 | 67.52 | 74.70 | ----- | z | 85.81 | 72.07 | 54.77 | 35.90 | 35.23 | 55.13 | a | |||||||||||
1974 | 30.42 | 39.46 | 45.77 | a | 56.17 | 60.81 | 80.90 | 81.55 | 85.06 | 78.00 | 65.16 | 42.00 | 35.58 | 58.41 | ||||||||||||
1975 | 31.16 | 35.00 | 42.42 | 52.77 | 65.06 | 72.43 | 87.80 | a | 78.84 | 78.53 | 54.71 | 39.97 | 35.74 | 56.20 | ||||||||||||
1976 | 33.97 | 37.52 | 43.32 | 55.73 | 67.94 | 71.77 | 82.55 | 76.06 | 77.13 | 58.58 | 42.33 | 34.65 | 56.80 | |||||||||||||
1977 | 28.16 | 42.79 | 47.23 | 63.80 | 62.67 | a | 80.21 | b | 81.87 | 85.67 | a | 62.33 | 53.03 | b | 38.57 | 32.23 | 56.55 | |||||||||
1978 | 32.55 | 36.21 | 44.06 | 53.13 | 60.35 | 75.27 | 81.83 | a | 74.42 | 64.28 | a | 56.97 | b | 34.83 | 25.90 | 53.32 | ||||||||||
1979 | 19.94 | 32.50 | 47.19 | 54.33 | 65.55 | 75.97 | 83.81 | 81.94 | 74.77 | 58.29 | 35.57 | 35.39 | 55.44 | |||||||||||||
1980 | 25.45 | 35.22 | b | 43.38 | b | 61.07 | 65.56 | f | 70.10 | a | 83.54 | g | 77.35 | 69.80 | 58.52 | 40.07 | 35.68 | 51.66 | b | |||||||
1981 | 38.58 | 39.50 | 53.86 | b | 57.90 | 62.58 | 67.33 | 80.13 | 86.29 | 74.00 | 56.58 | 44.73 | 33.74 | 57.94 | ||||||||||||
1982 | 32.13 | h | 36.73 | f | 47.31 | e | 53.83 | g | 67.65 | e | 76.74 | g | 78.84 | f | 80.26 | h | 72.54 | f | 55.41 | d | 38.40 | j | 29.48 | j | 56.79 | i |
1983 | 34.62 | g | 35.45 | f | 49.65 | h | 58.38 | i | 71.25 | k | 71.25 | j | 73.25 | k | 84.79 | l | 71.00 | j | 58.58 | l | 42.12 | m | 27.52 | j | ----- | z |
1984 | 32.84 | f | 41.52 | h | 52.67 | g | 57.38 | f | 61.87 | h | 74.33 | i | 85.88 | f | 86.77 | i | 73.44 | e | 59.76 | f | 41.07 | c | 25.70 | d | 46.74 | i |
1985 | 31.10 | 34.93 | 49.82 | c | 62.43 | 74.26 | 77.71 | b | 95.71 | 84.80 | a | 66.34 | a | 60.19 | 32.04 | b | 26.45 | 57.98 | ||||||||
1986 | 34.94 | 38.43 | 55.67 | g | 57.11 | b | 71.13 | 83.60 | 81.81 | 90.53 | a | 68.66 | a | 65.77 | 45.27 | 36.35 | 61.24 | a | ||||||||
1987 | 36.52 | 47.23 | f | 53.17 | a | 66.70 | 74.50 | a | 79.66 | a | 82.84 | 84.42 | 83.17 | a | 69.67 | a | 47.93 | a | 32.43 | c | 64.64 | a | ||||
1988 | 33.48 | 43.16 | d | 53.35 | 64.87 | 69.26 | 72.83 | a | 87.30 | d | 89.89 | l | 81.08 | f | 65.82 | i | 44.21 | a | 31.50 | g | 58.56 | d | ||||
1989 | 32.43 | h | 30.84 | i | 43.83 | g | 60.48 | i | 65.73 | a | 76.40 | 83.60 | k | 80.13 | a | 69.38 | a | 48.74 | ----- | z | 29.33 | g | 68.08 | g | ||
1990 | 31.27 | a | 29.48 | c | 45.00 | c | 53.30 | j | 54.91 | h | 67.89 | k | 93.65 | k | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 35.25 | i |
1991 | ----- | z | 40.67 | y | ----- | z | ----- | z | 61.57 | a | 65.03 | 85.91 | i | ----- | z | ----- | z | 56.86 | b | 37.37 | 35.77 | a | 51.32 | g | ||
1992 | ----- | z | 41.93 | 55.17 | a | 57.93 | ----- | z | 79.86 | a | 76.06 | 82.30 | a | 67.73 | 56.03 | 33.77 | 31.81 | d | 58.26 | b | ||||||
1993 | 30.68 | 36.89 | 47.84 | 55.83 | ----- | z | 74.47 | 72.77 | 79.93 | a | 76.33 | 64.68 | ----- | z | ----- | z | 59.94 | c | ||||||||
1994 | ----- | z | 36.71 | 54.60 | a | 62.20 | 71.14 | j | 77.12 | n | 90.77 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 61.07 | h | |||
1995 | ----- | z | ----- | z | 49.70 | d | 59.40 | 71.42 | e | ----- | z | 82.57 | c | 77.31 | b | 74.68 | e | 50.68 | 36.00 | v | 33.06 | o | 66.54 | e | ||
1996 | 30.44 | f | 40.77 | g | 46.55 | 60.34 | a | 61.67 | d | 75.83 | 88.42 | 83.54 | e | 68.11 | b | 55.63 | a | 38.86 | a | 30.77 | 60.97 | b | ||||
1997 | 34.57 | c | 38.72 | c | 47.23 | 55.23 | 67.71 | 71.00 | a | 82.28 | f | 84.61 | 72.83 | a | 55.90 | 42.47 | 34.74 | 55.00 | a | |||||||
1998 | 34.68 | 43.33 | a | 51.45 | 61.33 | c | 68.81 | d | ----- | z | 90.37 | a | 87.71 | c | 82.58 | f | 59.40 | a | 46.12 | m | 32.85 | d | 58.88 | c | ||
1999 | 37.69 | b | 42.70 | a | 51.17 | b | 59.53 | 63.48 | d | 74.27 | h | 81.43 | c | 86.00 | d | 74.60 | e | 62.29 | c | 48.56 | c | 38.54 | e | 58.73 | a | |
2000 | 35.73 | a | 42.77 | c | 50.23 | a | 66.40 | e | 67.14 | b | 75.46 | b | 83.08 | g | 85.67 | j | 74.00 | j | 61.48 | d | 45.11 | k | ----- | z | 57.03 | e |
2001 | 37.14 | b | ----- | z | 53.17 | h | 56.38 | f | 70.67 | g | 75.91 | g | 80.96 | f | 86.77 | e | 79.35 | j | 59.81 | e | 47.22 | g | 36.14 | q | 61.24 | i |
2002 | 37.08 | e | 41.00 | g | 43.80 | f | 58.12 | f | 64.04 | f | 77.76 | i | 87.08 | f | 84.19 | e | 76.56 | e | 60.48 | j | 45.28 | e | ----- | z | 60.78 | h |
2003 | 38.58 | 43.04 | d | 49.62 | e | 57.15 | d | 66.59 | d | ----- | z | 92.11 | d | 89.90 | j | 79.12 | e | 66.27 | i | ----- | z | ----- | z | 60.89 | e | |
2004 | 37.07 | q | 42.71 | e | 57.39 | h | 65.90 | j | 68.37 | l | 79.57 | i | 88.19 | d | 85.14 | i | 71.63 | k | 65.32 | l | 48.00 | p | 40.50 | w | 65.45 | j |
2005 | 36.59 | n | 46.39 | j | 55.24 | j | 61.75 | n | 68.00 | m | 76.22 | l | 90.21 | q | 87.15 | e | 73.00 | o | 59.89 | m | 40.90 | i | 29.69 | r | 87.15 | k |
2006 | 40.45 | k | 42.78 | j | 49.88 | n | 60.53 | k | 73.14 | j | 76.45 | j | 84.48 | j | 85.29 | n | 77.69 | n | 62.70 | d | ----- | z | ----- | z | 62.70 | k |
2007 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 71.00 | m | 55.68 | 32.57 | 24.77 | a | 37.67 | i | ||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 31.93 | 38.58 | 47.86 | 58.18 | 66.33 | 75.27 | 84.94 | 83.85 | 72.68 | 58.23 | 40.73 | 32.28 | 56.48 | |||||||||||||
S.D. | 4.91 | 3.57 | 3.68 | 3.97 | 3.94 | 4.42 | 4.82 | 4.72 | 5.45 | 4.48 | 4.09 | 3.65 | 1.53 | |||||||||||||
SKEW | -1.00 | -0.60 | 0.26 | 0.45 | 0.39 | -0.13 | -0.13 | -0.12 | 0.23 | 0.34 | -0.33 | -0.49 | -0.55 | |||||||||||||
MAX | 38.58 | 43.33 | 55.17 | 66.70 | 74.50 | 83.60 | 95.71 | 92.68 | 84.60 | 69.67 | 48.56 | 38.54 | 58.41 | |||||||||||||
MIN | 19.55 | 29.48 | 40.87 | 51.57 | 60.35 | 65.03 | 72.77 | 74.42 | 62.33 | 48.74 | 32.04 | 24.77 | 53.32 | |||||||||||||
YRS | 31 | 32 | 33 | 35 | 33 | 32 | 31 | 36 | 34 | 38 | 33 | 30 | 13 |