YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1944 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 32.73 | 28.25 | a | 30.49 | j | |
1945 | 26.45 | a | 26.00 | 30.24 | 30.57 | 45.38 | a | 49.12 | 59.21 | 58.98 | 50.81 | a | 44.26 | 32.45 | 23.76 | 39.77 | ||||||||||
1946 | 23.18 | 26.70 | 33.84 | 43.71 | a | 41.05 | 55.65 | 60.77 | 59.32 | 52.18 | 39.45 | 28.70 | 30.52 | 41.26 | ||||||||||||
1947 | 21.73 | 23.31 | a | 27.42 | 34.50 | 46.73 | a | 50.18 | 60.18 | 60.55 | 55.40 | 46.31 | 24.70 | 25.85 | 39.74 | |||||||||||
1948 | 22.12 | a | 22.90 | 22.89 | 38.70 | 46.66 | 53.80 | 60.94 | 61.21 | 56.35 | 41.95 | 25.62 | 23.32 | a | 39.70 | |||||||||||
1949 | 16.85 | 21.66 | 31.26 | 39.40 | 46.82 | 54.17 | 60.00 | 59.24 | 53.15 | 40.39 | 41.77 | 26.60 | 40.94 | |||||||||||||
1950 | 24.34 | 29.52 | 28.71 | 36.85 | 42.10 | 54.33 | 57.20 | a | 56.92 | a | 49.20 | 49.19 | 33.55 | 31.98 | 41.16 | |||||||||||
1951 | 21.47 | 27.07 | 27.19 | 33.79 | b | 45.98 | 49.12 | 61.32 | 58.39 | 50.67 | 40.69 | 29.90 | 23.45 | 39.09 | ||||||||||||
1952 | 25.84 | 25.03 | 24.55 | 36.47 | 46.23 | 58.83 | 60.65 | 59.88 | b | 54.27 | 45.23 | 26.37 | 27.18 | 40.88 | ||||||||||||
1953 | 32.18 | 23.48 | 32.53 | 32.92 | 41.60 | 52.73 | s | 62.37 | 58.27 | 55.63 | 43.89 | h | 39.45 | 24.82 | a | 40.33 | b | |||||||||
1954 | 28.68 | 33.37 | a | 25.92 | 43.48 | 46.45 | 56.29 | b | 64.48 | 60.19 | 55.43 | 44.55 | a | 38.18 | 29.53 | 43.88 | ||||||||||
1955 | 24.15 | 19.14 | 26.84 | 37.63 | 44.94 | 50.67 | 60.80 | a | 59.85 | 54.07 | 46.79 | 32.12 | a | 29.85 | 40.57 | |||||||||||
1956 | 30.58 | 21.60 | c | 29.39 | c | 36.40 | 48.97 | 58.40 | 58.61 | 56.50 | 54.79 | a | 44.34 | 31.18 | 30.52 | 41.77 | ||||||||||
1957 | 20.23 | c | 32.71 | 29.16 | 31.83 | 41.84 | 54.33 | 60.84 | 59.48 | a | 50.15 | 43.34 | 31.38 | 36.81 | d | 41.01 | ||||||||||
1958 | 31.98 | 37.59 | 25.31 | 34.65 | 48.93 | a | 55.05 | 58.39 | 60.79 | 53.48 | 45.03 | 34.18 | 29.21 | 42.88 | ||||||||||||
1959 | 24.56 | 24.50 | a | 28.60 | 36.14 | a | 45.32 | 57.50 | a | 58.68 | 59.21 | 49.00 | a | 39.27 | 31.12 | 29.11 | 40.25 | |||||||||
1960 | 20.71 | 17.88 | 31.98 | 39.62 | b | 45.56 | 56.12 | a | 59.64 | b | 59.23 | 53.48 | 42.56 | 32.36 | b | 24.74 | 40.32 | |||||||||
1961 | 26.76 | 25.95 | 28.70 | a | 33.57 | 45.66 | 54.18 | 58.69 | 58.00 | 45.72 | 41.42 | a | 27.68 | 20.35 | 38.89 | |||||||||||
1962 | 21.23 | a | 26.06 | a | 25.34 | 39.19 | a | 46.83 | a | 51.71 | a | 58.60 | 58.95 | a | 52.00 | b | 44.90 | b | 33.98 | b | 29.87 | 40.72 | ||||
1963 | 14.91 | d | 27.19 | a | 25.26 | f | 38.12 | 47.88 | b | 54.43 | 62.63 | a | 57.15 | a | 53.79 | a | 48.28 | a | 36.17 | a | 24.63 | a | 42.29 | a | ||
1964 | 19.90 | 17.46 | a | 22.90 | 33.88 | a | 45.31 | b | ----- | z | 63.58 | a | 56.29 | b | 50.59 | a | 41.93 | d | 29.29 | a | 23.63 | a | 36.80 | a | ||
1965 | 25.37 | a | 22.75 | 18.24 | 36.64 | a | 43.42 | 51.53 | 59.48 | b | 55.25 | a | 44.60 | d | 45.74 | b | 36.16 | b | 29.21 | b | 39.03 | |||||
1966 | 22.20 | a | 19.46 | c | 32.24 | 36.12 | f | 47.20 | c | 54.05 | 63.10 | a | 56.70 | a | 53.07 | c | 41.56 | 34.61 | b | 26.73 | c | 40.99 | a | |||
1967 | 25.30 | d | 23.12 | b | 34.35 | 38.22 | c | 41.95 | b | 49.46 | c | 58.19 | b | 55.62 | a | 50.53 | a | 43.95 | c | 31.98 | b | 18.75 | c | 39.28 | ||
1968 | 27.26 | 26.34 | a | 30.46 | c | 32.71 | d | 42.12 | c | 55.34 | a | 57.89 | d | 55.23 | c | 49.89 | b | 44.25 | c | 27.47 | a | 23.65 | e | 39.39 | ||
1969 | 27.48 | f | 25.80 | a | 22.33 | a | 39.53 | a | 47.93 | c | 49.35 | f | 61.48 | f | 60.52 | d | 53.70 | c | 34.00 | a | 30.22 | a | 30.23 | k | 39.25 | d |
1970 | 24.05 | b | 27.96 | a | 24.52 | b | 31.41 | b | 47.56 | f | 52.44 | d | 59.83 | b | 60.17 | e | 48.57 | c | 36.94 | d | 30.20 | b | 27.45 | a | 38.50 | a |
1971 | 24.56 | e | 21.73 | b | 28.69 | d | 36.16 | e | 42.67 | d | 56.57 | c | 59.12 | c | 58.48 | e | 46.45 | b | 38.38 | a | 31.57 | c | 21.97 | b | 38.86 | |
1972 | 21.37 | d | 26.66 | a | 36.47 | b | 39.61 | c | 45.66 | b | 55.98 | c | 59.58 | e | 56.28 | b | 51.36 | b | 42.34 | c | 26.22 | c | 22.57 | d | 40.34 | |
1973 | 23.32 | a | 25.60 | c | 27.77 | a | 31.83 | 44.06 | 53.75 | 57.72 | b | 57.97 | 48.02 | 44.03 | 32.93 | a | 24.89 | 39.32 | ||||||||
1974 | 22.14 | b | 26.62 | 34.92 | 35.55 | 48.98 | 56.42 | 60.11 | 55.73 | 49.18 | 45.35 | 33.62 | 23.53 | a | 41.01 | |||||||||||
1975 | 23.35 | 25.08 | d | 29.69 | 30.32 | 40.24 | 51.32 | 57.02 | 58.60 | a | 49.02 | 44.69 | 30.48 | 27.75 | a | 38.96 | ||||||||||
1976 | 27.39 | 28.64 | a | 28.18 | 38.52 | 44.92 | 53.82 | 61.15 | 58.06 | 52.84 | a | 40.40 | 34.16 | a | 28.34 | 41.37 | ||||||||||
1977 | 22.45 | 34.24 | a | 32.24 | 43.97 | 49.00 | 61.28 | 61.05 | 56.21 | 55.18 | 52.28 | a | 38.18 | 26.98 | b | 44.42 | ||||||||||
1978 | 24.91 | b | 25.65 | a | 33.76 | b | 39.18 | 46.31 | 55.95 | 62.85 | 57.81 | 53.24 | a | 44.27 | 31.30 | 19.15 | a | 41.20 | ||||||||
1979 | 19.11 | 27.11 | 32.73 | ----- | z | 45.05 | b | 55.57 | 61.57 | a | 57.24 | b | 55.80 | 44.19 | 28.05 | b | 29.13 | 41.41 | a | |||||||
1980 | 21.42 | 27.79 | 30.23 | i | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 55.97 | ----- | z | ----- | z | 38.61 | 35.95 | h | ||||
1981 | ----- | z | ----- | z | 35.29 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 35.29 | k | |
1982 | 26.41 | c | 30.56 | c | 32.50 | c | 38.46 | b | 49.50 | j | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 31.98 | h |
1983 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 50.12 | m | 43.07 | d | 36.77 | q | 13.19 | w | 43.07 | k |
1984 | 26.79 | s | 26.13 | n | 26.13 | l | 32.64 | h | 48.93 | b | 53.94 | d | 60.56 | e | 57.75 | e | 50.61 | g | 34.46 | c | 34.50 | w | ----- | z | 51.13 | g |
1985 | 14.04 | r | 18.56 | l | 28.52 | g | 40.17 | j | 48.00 | d | 54.00 | f | 59.66 | b | 59.64 | b | 48.15 | j | 40.59 | i | 27.36 | i | 25.50 | 48.20 | h | |
1986 | 30.12 | f | 26.12 | c | 36.87 | 39.69 | f | 45.13 | h | 54.68 | e | 58.24 | d | 56.88 | b | 46.56 | e | 36.94 | d | 28.30 | o | 23.69 | b | 42.50 | d | |
1987 | 19.62 | n | 23.00 | e | 26.64 | i | 35.05 | i | 46.56 | g | 55.09 | b | 59.46 | c | 56.33 | k | 49.87 | g | 41.46 | h | 30.14 | s | 9.83 | s | 45.85 | i |
1988 | ----- | z | 25.50 | s | 21.57 | i | 37.32 | s | 48.27 | e | 59.30 | 60.48 | c | 60.21 | j | ----- | z | ----- | z | ----- | z | ----- | z | 56.02 | i | |
1989 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1990 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 58.05 | 57.89 | 58.24 | 55.00 | 44.26 | 35.58 | 18.98 | b | 46.86 | e | ||||||
1991 | 23.67 | b | 31.61 | 30.15 | 37.57 | 46.95 | 55.76 | a | 58.76 | 58.16 | 51.28 | a | 44.08 | a | ----- | z | 28.75 | i | 43.80 | b | ||||||
1992 | 29.11 | l | 29.22 | b | 32.75 | a | 42.91 | b | 47.97 | a | 51.29 | a | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 40.83 | g |
1993 | 23.37 | 21.54 | 30.31 | 33.93 | 44.68 | 49.92 | 56.21 | 54.47 | a | 46.18 | 36.95 | 24.82 | 24.05 | 37.20 | ||||||||||||
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 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2001 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2002 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2003 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2004 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2005 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2006 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2007 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2008 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2009 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2010 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2011 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2012 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2013 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 23.83 | 25.85 | 29.43 | 36.70 | 45.61 | 54.38 | 59.94 | 58.13 | 51.67 | 42.80 | 31.85 | 26.37 | 40.46 | |||||||||||||
S.D. | 3.65 | 4.29 | 4.17 | 3.64 | 2.44 | 2.90 | 1.84 | 1.70 | 3.20 | 3.78 | 4.03 | 4.26 | 1.53 | |||||||||||||
SKEW | 0.19 | 0.40 | -0.42 | 0.19 | -0.49 | -0.01 | 0.37 | -0.22 | -0.44 | -0.28 | 0.26 | 0.59 | 0.66 | |||||||||||||
MAX | 32.18 | 37.59 | 36.87 | 43.97 | 49.00 | 61.28 | 64.48 | 61.21 | 56.35 | 52.28 | 41.77 | 38.61 | 44.42 | |||||||||||||
MIN | 14.91 | 17.46 | 18.24 | 30.32 | 40.24 | 49.12 | 56.21 | 54.47 | 44.60 | 34.00 | 24.70 | 18.75 | 37.20 | |||||||||||||
YRS | 38 | 42 | 40 | 37 | 40 | 40 | 42 | 41 | 40 | 40 | 38 | 40 | 29 |