YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1939 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 71.10 | 63.65 | 58.67 | 38.68 | 25.10 | 22.87 | a | 46.68 | f | |||||
1940 | 22.42 | 28.93 | 36.20 | a | 53.52 | a | 64.23 | 73.87 | 75.84 | 69.16 | 55.48 | a | 44.00 | 27.30 | 19.26 | 47.52 | ||||||||||
1941 | ----- | z | 30.14 | 38.26 | 48.90 | 56.77 | 69.50 | 66.35 | 72.19 | 60.77 | 42.71 | 23.23 | 16.10 | a | 47.72 | a | ||||||||||
1942 | 24.08 | g | 33.62 | d | 31.23 | 46.60 | 61.16 | 66.90 | 68.57 | h | 63.48 | 58.20 | 42.23 | 18.23 | 6.68 | 42.83 | b | |||||||||
1943 | 10.26 | 27.82 | 33.26 | 46.83 | 60.48 | 69.57 | 65.16 | ----- | z | ----- | z | ----- | z | 32.33 | 25.17 | a | 41.21 | c | ||||||||
1944 | 17.35 | 30.28 | 30.23 | a | 41.50 | f | 53.26 | 64.03 | 66.32 | 62.35 | 53.60 | 42.42 | 25.87 | 21.52 | b | 42.48 | a | |||||||||
1945 | 26.34 | b | 26.74 | a | 31.06 | 42.97 | 52.58 | 68.50 | 69.55 | 60.94 | 55.30 | 37.32 | 17.50 | 16.74 | 42.13 | |||||||||||
1946 | 18.68 | 21.93 | a | 22.77 | 40.43 | 51.16 | 68.17 | 71.35 | 62.48 | 56.23 | 39.48 | 18.50 | 6.68 | 39.82 | ||||||||||||
1947 | 2.13 | 25.89 | 35.81 | 43.40 | 56.32 | 67.80 | 74.42 | 65.94 | 51.87 | 40.00 | 29.37 | 24.00 | 43.08 | |||||||||||||
1948 | 21.52 | 17.83 | 26.50 | a | 40.93 | 56.94 | 67.73 | 65.52 | 63.10 | 53.53 | 39.77 | 16.53 | 7.17 | a | 39.76 | |||||||||||
1949 | 16.00 | 14.18 | 36.16 | 38.79 | a | 54.26 | 62.13 | 69.39 | 65.00 | 56.40 | 40.00 | 28.77 | 6.43 | a | 40.63 | |||||||||||
1950 | 7.19 | 18.57 | 37.77 | 44.27 | 57.32 | 64.97 | 69.13 | 70.74 | 55.73 | 38.94 | 15.30 | 17.29 | 41.44 | |||||||||||||
1951 | 11.06 | 16.89 | 26.35 | 46.03 | 59.81 | 62.87 | 72.23 | 62.68 | 54.87 | 39.32 | 24.70 | 10.90 | 40.64 | |||||||||||||
1952 | 9.42 | 24.62 | 30.48 | 41.97 | 50.03 | 64.97 | 66.71 | 63.97 | 55.33 | 41.35 | 32.83 | 21.65 | 41.94 | |||||||||||||
1953 | 11.48 | 24.32 | 29.58 | 45.53 | 58.16 | 71.03 | 72.87 | 62.65 | 55.83 | 39.42 | 24.80 | 21.52 | 43.10 | |||||||||||||
1954 | 11.68 | 16.00 | 32.90 | 44.60 | 60.94 | 68.10 | 67.45 | 64.16 | 56.00 | 44.29 | 28.40 | 8.77 | 41.94 | |||||||||||||
1955 | 21.42 | 19.71 | 29.71 | 37.27 | 51.29 | 60.80 | 69.87 | 61.84 | 53.77 | 36.16 | 9.47 | 12.10 | 38.62 | |||||||||||||
1956 | 14.61 | 16.00 | 29.81 | 43.97 | 51.87 | 63.50 | 67.84 | 64.45 | 53.47 | 34.19 | 19.67 | 4.65 | 38.67 | |||||||||||||
1957 | 13.90 | 20.36 | 37.32 | 46.73 | 61.10 | 75.83 | 72.74 | 69.48 | 55.00 | 43.03 | 32.73 | 11.52 | 44.98 | |||||||||||||
1958 | 21.52 | 27.18 | 37.23 | 50.07 | 56.84 | 66.20 | 65.10 | 63.03 | 52.80 | 35.10 | 24.20 | 18.87 | 43.18 | |||||||||||||
1959 | 15.06 | 21.62 | l | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 15.06 | k | |
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 | 35.74 | 27.14 | a | 15.59 | d | 26.16 | i | |
1971 | 15.65 | n | 24.14 | 26.41 | b | 42.17 | a | 48.68 | f | 63.15 | d | 67.47 | a | 68.17 | a | 56.42 | f | 37.47 | a | 22.68 | b | 15.72 | b | 40.82 | c | |
1972 | 14.30 | d | 19.52 | 24.32 | 36.77 | 54.16 | 63.36 | h | 75.53 | a | 73.11 | v | 54.86 | a | 38.48 | 27.03 | 12.39 | 35.74 | b | |||||||
1973 | 6.19 | 23.68 | 30.03 | 44.33 | 57.48 | 67.67 | 68.61 | 61.07 | p | ----- | z | ----- | z | ----- | z | ----- | z | 42.57 | e | |||||||
1974 | ----- | z | ----- | z | ----- | z | 48.88 | e | 64.00 | e | 70.95 | k | 71.50 | c | 70.89 | d | ----- | z | ----- | z | 25.37 | c | 17.54 | g | 56.13 | g |
1975 | 15.86 | i | 20.16 | c | 32.44 | f | ----- | z | 56.18 | i | 64.23 | d | 69.45 | b | 66.14 | j | 57.67 | f | 42.47 | n | ----- | z | ----- | z | 51.28 | i |
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 | 19.61 | h | ----- | z |
1979 | 19.57 | a | 14.39 | 36.10 | 42.77 | 57.82 | c | 65.03 | 71.42 | e | 67.04 | g | 59.07 | a | 43.96 | d | 32.12 | d | 8.40 | k | 44.22 | b | ||||
1980 | 13.41 | i | 31.81 | b | 34.10 | b | 47.52 | c | 54.25 | c | 61.53 | 66.86 | b | 62.50 | i | 55.70 | 40.79 | c | 30.89 | b | 0.32 | c | 42.38 | b | ||
1981 | 32.25 | c | 26.39 | e | 39.82 | c | 44.96 | f | 61.21 | c | 65.89 | c | 60.00 | y | 69.60 | u | 58.70 | 41.69 | b | 25.17 | 18.00 | 41.01 | c | |||
1982 | 9.23 | a | 23.04 | 34.77 | 41.10 | 54.65 | 63.86 | a | 66.66 | b | 67.68 | 53.90 | a | 30.87 | a | 23.90 | a | 21.48 | 40.93 | |||||||
1983 | 16.32 | 27.22 | a | 39.32 | 44.70 | 57.48 | 67.57 | 70.42 | 64.07 | d | 54.96 | c | 39.37 | a | 27.93 | a | 20.42 | e | 44.15 | |||||||
1984 | 17.65 | 21.04 | a | 41.96 | c | 42.73 | ----- | z | 68.13 | g | ----- | z | ----- | z | ----- | z | ----- | z | 21.39 | b | 17.38 | b | 27.03 | f | ||
1985 | 31.39 | 20.29 | 32.70 | a | 37.97 | a | 52.96 | c | 62.47 | 70.76 | b | 63.90 | a | 53.69 | a | 37.93 | c | 17.60 | e | 28.17 | b | 42.48 | ||||
1986 | 26.03 | b | 30.48 | a | 36.04 | c | 39.93 | c | 59.07 | c | 67.07 | c | 70.33 | d | 60.27 | a | 55.59 | a | 45.63 | a | 27.54 | d | 26.83 | b | 45.40 | |
1987 | 24.30 | d | 31.43 | 36.03 | b | 46.38 | a | 56.60 | f | 63.75 | b | 67.24 | b | 68.07 | b | 56.04 | b | 43.55 | b | 28.40 | 16.24 | b | 43.77 | a | ||
1988 | 18.68 | c | 28.89 | a | 38.34 | b | 44.14 | b | 57.71 | c | 68.20 | e | 70.89 | c | 65.13 | a | 58.10 | 36.38 | b | 24.14 | b | 23.33 | a | 44.50 | ||
1989 | 3.86 | c | 21.29 | 35.13 | a | 46.48 | a | 56.35 | 66.57 | b | 72.16 | 65.71 | 56.37 | c | 39.21 | b | 18.59 | a | 26.80 | a | 42.38 | |||||
1990 | 16.39 | c | 7.20 | c | ----- | z | 49.19 | d | 60.52 | h | 70.31 | d | 72.92 | e | 68.44 | f | 54.42 | f | 41.17 | h | 17.39 | g | 17.00 | l | 43.20 | g |
1991 | 17.00 | i | 25.05 | g | 34.67 | v | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1992 | 23.62 | g | 24.52 | h | 34.07 | p | 41.00 | y | 51.19 | e | 65.53 | m | 68.08 | e | 63.10 | a | 49.69 | a | ----- | z | ----- | z | ----- | z | 58.01 | h |
1993 | 11.42 | g | 26.20 | c | 37.96 | c | 47.41 | m | 64.96 | h | 69.90 | a | 74.21 | g | 66.08 | f | 53.86 | b | 43.93 | c | 25.07 | b | 25.73 | e | 40.38 | e |
1994 | 24.31 | e | 25.04 | b | 30.36 | f | 47.46 | b | 58.80 | f | 70.00 | b | 71.19 | j | 68.52 | f | 58.92 | d | 39.11 | c | 17.81 | d | 18.65 | e | 37.66 | d |
1995 | 21.92 | f | 26.44 | c | 30.65 | 49.21 | b | 57.52 | 67.83 | 70.94 | 69.03 | b | 59.52 | e | 42.73 | e | 27.20 | e | 18.25 | g | 50.11 | b | ||||
1996 | 7.32 | c | 20.20 | d | 40.77 | e | 48.61 | b | 63.43 | a | 69.83 | 70.06 | 67.00 | b | 56.27 | 36.10 | 18.21 | a | 15.33 | d | 42.76 | |||||
1997 | 17.54 | g | 34.86 | g | 35.57 | a | 47.04 | c | 61.34 | b | 73.76 | a | 75.65 | 70.31 | b | 59.33 | 38.12 | e | 30.70 | 20.31 | b | 51.21 | b | |||
1998 | 18.96 | f | 31.07 | a | 39.70 | a | 46.90 | 53.83 | a | 65.90 | a | 68.30 | a | 62.41 | b | 56.83 | a | 42.87 | 25.21 | a | 19.77 | e | 46.62 | a | ||
1999 | 12.53 | a | 18.88 | c | 35.39 | 44.60 | 59.32 | c | 71.17 | a | 71.06 | 65.90 | a | 56.31 | a | 40.20 | a | 24.37 | c | 13.85 | d | 42.80 | ||||
2000 | 17.53 | a | 32.00 | a | 37.86 | c | 47.54 | b | 58.07 | a | 70.07 | a | 67.57 | c | 67.23 | 56.10 | a | 42.50 | a | 30.27 | 23.79 | b | 45.88 | |||
2001 | 28.48 | 29.64 | 37.35 | 46.17 | 54.43 | c | 73.63 | 67.24 | b | 69.16 | 61.23 | 37.43 | c | 23.48 | a | 13.96 | d | 45.19 | ||||||||
2002 | 24.71 | 26.46 | 35.89 | d | 42.04 | c | 61.69 | b | 68.64 | b | 73.06 | 68.35 | e | 57.11 | c | 45.19 | 36.07 | c | 25.03 | b | 47.02 | |||||
2003 | 22.37 | a | 32.81 | a | 35.32 | 48.70 | 58.42 | 66.76 | e | 71.48 | 66.64 | f | 56.37 | 44.39 | 21.07 | 17.42 | 43.19 | a | ||||||||
2004 | 9.43 | a | 30.52 | 32.77 | 47.59 | a | 62.38 | b | 71.40 | 72.55 | 72.19 | 51.97 | a | 40.84 | 29.45 | a | 21.10 | a | 45.18 | |||||||
2005 | 17.81 | 23.96 | b | 38.10 | 47.37 | 61.74 | 65.50 | v | 70.95 | j | 67.68 | 54.80 | 39.45 | 16.00 | a | 25.14 | b | 39.20 | b | |||||||
2006 | 7.61 | 24.82 | 31.26 | 43.28 | a | 50.70 | u | 66.35 | j | 70.00 | b | 60.97 | a | 56.52 | a | 42.19 | 17.40 | 22.97 | b | 37.70 | b | |||||
2007 | 16.71 | 20.30 | a | 24.07 | a | 50.81 | c | 59.74 | 69.37 | 68.62 | e | 67.27 | a | 55.57 | 38.79 | c | 30.21 | a | 19.77 | a | 43.43 | |||||
2008 | 12.63 | a | 20.60 | d | 36.00 | 41.76 | a | 56.37 | a | 62.38 | a | 64.79 | b | 64.05 | j | 52.62 | a | 33.29 | 22.86 | b | 14.68 | c | 38.00 | a | ||
2009 | 10.77 | 19.21 | 29.66 | b | 43.07 | b | 63.03 | a | 67.17 | 71.60 | a | 64.00 | 55.90 | 45.34 | b | 22.03 | a | 13.68 | 42.12 | |||||||
2010 | 17.93 | a | 26.72 | c | 35.52 | ----- | z | 62.07 | c | 63.35 | d | 63.72 | b | 64.12 | f | 57.93 | a | 43.93 | c | 24.17 | a | 10.84 | 40.62 | b | ||
2011 | 17.40 | a | 18.64 | 34.63 | a | 45.00 | h | 59.68 | 64.65 | d | 67.77 | a | 62.14 | c | 55.61 | b | 42.10 | 14.30 | 21.11 | d | 41.64 | a | ||||
2012 | 3.77 | 28.46 | e | 29.52 | b | 48.43 | b | 57.63 | a | 67.26 | c | 64.75 | c | 64.00 | a | 52.13 | 40.03 | a | 18.77 | 13.55 | 40.69 | |||||
2013 | 23.37 | a | 27.95 | f | 32.39 | 46.36 | s | 57.68 | c | 76.97 | 72.71 | 65.36 | c | 56.80 | o | 41.78 | h | 24.38 | a | 15.17 | b | 46.00 | d | |||
2014 | 29.16 | 21.25 | 35.83 | a | 47.50 | ----- | z | ----- | z | 71.53 | a | 65.11 | d | ----- | z | 40.87 | 30.47 | 27.03 | a | 40.97 | c | |||||
2015 | 17.85 | e | 28.96 | e | 36.10 | j | 47.47 | 63.60 | a | 69.41 | a | 69.71 | 69.35 | k | 52.57 | 43.94 | 22.53 | 19.20 | a | 43.52 | b | |||||
2016 | 27.00 | 31.10 | 39.55 | 53.79 | a | 63.90 | a | 70.78 | c | 73.12 | e | ----- | z | 55.86 | i | ----- | z | ----- | z | ----- | z | 51.32 | e | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 16.80 | 24.13 | 33.88 | 45.23 | 57.86 | 67.48 | 69.74 | 65.57 | 55.71 | 40.24 | 24.25 | 17.47 | 42.74 | |||||||||||||
S.D. | 7.36 | 5.60 | 4.48 | 3.76 | 3.81 | 3.63 | 2.93 | 3.14 | 2.36 | 3.26 | 5.47 | 6.36 | 2.29 | |||||||||||||
SKEW | 0.08 | -0.45 | -0.58 | -0.17 | -0.19 | 0.40 | 0.02 | 0.42 | 0.07 | -0.52 | -0.27 | -0.50 | 0.17 | |||||||||||||
MAX | 32.25 | 33.62 | 41.96 | 53.79 | 64.23 | 76.97 | 75.84 | 72.19 | 61.23 | 45.63 | 36.07 | 28.17 | 47.52 | |||||||||||||
MIN | 2.13 | 7.20 | 22.77 | 36.77 | 50.03 | 60.80 | 63.72 | 60.27 | 49.69 | 30.87 | 9.47 | 0.32 | 38.62 | |||||||||||||
YRS | 51 | 57 | 55 | 53 | 52 | 54 | 56 | 46 | 52 | 54 | 58 | 55 | 30 |