YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1937 | ----- | z | ----- | z | ----- | z | ----- | z | 60.81 | 67.93 | a | 75.95 | a | 76.88 | a | 61.60 | a | 46.44 | f | 29.41 | c | 15.05 | b | 55.38 | e | |
1938 | 12.37 | 15.64 | 35.48 | 45.37 | 55.05 | a | 67.12 | 73.95 | 74.58 | 65.02 | 55.94 | 30.85 | 23.17 | a | 46.21 | |||||||||||
1939 | 19.06 | 9.68 | 29.56 | 42.57 | 64.56 | 70.73 | 75.50 | 70.23 | 64.88 | 47.21 | 36.55 | 29.29 | 46.65 | |||||||||||||
1940 | 5.00 | 18.28 | 23.79 | e | 42.85 | 56.76 | 68.48 | a | 76.31 | 68.76 | 65.93 | 55.61 | 26.62 | 23.05 | 44.29 | |||||||||||
1941 | 17.74 | 16.48 | 29.81 | 51.38 | 64.32 | 68.90 | 74.34 | 72.81 | 63.10 | 51.37 | 35.97 | 26.27 | 47.71 | |||||||||||||
1942 | 20.60 | 20.55 | 35.32 | 51.75 | 55.60 | 66.53 | 72.05 | 71.65 | 57.68 | 49.69 | 33.03 | 15.21 | 45.81 | |||||||||||||
1943 | 6.32 | 18.95 | 25.02 | 45.75 | 55.02 | 69.97 | 75.21 | 71.65 | 58.07 | 50.05 | b | 28.43 | 22.95 | 43.95 | ||||||||||||
1944 | 27.44 | 20.91 | 25.45 | 42.05 | 62.61 | 70.05 | a | 72.19 | 70.68 | 61.75 | 50.97 | 36.35 | 19.76 | 46.68 | ||||||||||||
1945 | 16.08 | 19.68 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 17.88 | j | ||
1946 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1947 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 63.36 | a | 72.52 | 77.69 | 65.23 | 59.58 | 28.20 | 16.89 | 54.78 | e | ||||||
1948 | 10.06 | 17.88 | a | 27.48 | 51.98 | 57.85 | 66.88 | 74.35 | a | 71.85 | a | 67.90 | a | 50.13 | a | 33.60 | 19.47 | a | 45.79 | |||||||
1949 | 12.22 | b | 14.12 | 30.52 | b | 46.72 | c | 62.45 | 70.95 | 75.71 | 74.02 | a | 59.05 | 52.55 | a | 39.64 | a | 20.53 | 46.54 | |||||||
1950 | 5.57 | a | 18.52 | 26.79 | c | 37.72 | 55.92 | a | 68.94 | c | 69.06 | 67.36 | c | 61.94 | c | 54.55 | c | 27.83 | 13.24 | 42.29 | ||||||
1951 | 7.67 | a | 19.63 | a | 18.77 | a | 41.25 | 60.88 | a | 63.43 | a | 71.10 | b | 67.85 | k | 57.40 | a | 48.48 | 26.16 | b | 14.55 | 39.03 | a | |||
1952 | 12.43 | b | 23.64 | 24.23 | 48.29 | a | 57.56 | 70.85 | 73.67 | a | 69.10 | 63.95 | 46.08 | 35.17 | a | 22.23 | a | 45.60 | ||||||||
1953 | 16.63 | a | 20.32 | 32.39 | 40.87 | 57.90 | 70.58 | 71.98 | 73.02 | 61.26 | a | 55.50 | a | 37.60 | 20.53 | a | 46.55 | |||||||||
1954 | 8.35 | 31.81 | a | 27.33 | b | 46.63 | 53.95 | c | 70.07 | 73.75 | a | 69.06 | 61.57 | a | 47.32 | a | 38.61 | b | 23.52 | 46.00 | ||||||
1955 | 16.35 | 13.93 | 28.65 | 54.92 | 64.71 | l | 66.80 | 77.50 | 74.31 | 62.57 | a | 51.89 | 24.52 | 11.37 | 43.89 | a | ||||||||||
1956 | 10.90 | a | 12.60 | 26.53 | 41.03 | a | 59.15 | a | 73.73 | 68.61 | c | 70.05 | 59.07 | 57.05 | a | 33.65 | 25.00 | 44.78 | ||||||||
1957 | 11.05 | 22.89 | 30.37 | 46.45 | 56.45 | 66.53 | 76.60 | 68.84 | 59.19 | a | 47.84 | 33.18 | 26.52 | a | 45.49 | |||||||||||
1958 | 21.65 | 14.89 | 31.11 | 46.70 | b | 62.15 | 63.23 | 69.05 | 70.94 | ----- | z | 44.95 | u | 35.73 | 16.37 | 43.18 | b | |||||||||
1959 | 11.07 | a | 15.61 | 34.77 | 47.42 | 61.05 | 72.37 | 72.18 | 73.67 | b | 60.66 | a | 43.60 | 25.10 | 30.10 | 45.63 | ||||||||||
1960 | 16.03 | 17.52 | 19.10 | 46.98 | 58.18 | 66.59 | g | 72.11 | 71.95 | 62.30 | 50.52 | 36.40 | 19.61 | 42.79 | a | |||||||||||
1961 | 15.98 | 24.32 | 34.34 | 40.95 | 56.11 | 69.50 | b | 69.69 | 71.82 | c | 60.78 | 52.26 | 34.07 | 16.29 | 45.51 | |||||||||||
1962 | 12.56 | 16.63 | a | 25.26 | 44.62 | 63.42 | a | 67.52 | 69.87 | 70.11 | 58.47 | 51.82 | c | 39.55 | 22.52 | 45.20 | ||||||||||
1963 | 7.42 | 18.09 | a | 37.26 | 50.50 | 59.08 | a | 72.25 | b | 72.40 | 70.16 | 64.48 | 59.71 | b | 40.67 | c | 11.88 | c | 46.99 | |||||||
1964 | 23.63 | 25.69 | 26.26 | 48.43 | 63.19 | 70.17 | 75.71 | 67.68 | 61.43 | 50.87 | 34.00 | 14.11 | 46.76 | |||||||||||||
1965 | 10.45 | 13.05 | 19.17 | e | 43.43 | 60.58 | 68.87 | 71.81 | 68.16 | 52.92 | 53.02 | c | 33.57 | a | 28.98 | a | 43.67 | |||||||||
1966 | 3.35 | 15.52 | 37.24 | 40.97 | 56.26 | b | 69.52 | 76.37 | a | 67.58 | 60.62 | 50.03 | 29.47 | 18.79 | 43.81 | |||||||||||
1967 | 16.35 | 13.07 | 33.19 | 45.90 | 54.50 | 66.65 | 69.97 | 67.06 | 60.77 | 47.44 | 33.03 | 22.60 | 44.21 | |||||||||||||
1968 | 16.37 | 15.66 | 40.69 | 49.02 | 54.23 | 69.85 | 70.66 | 70.06 | 61.15 | 50.98 | 34.88 | 16.44 | 45.83 | |||||||||||||
1969 | 7.23 | 17.93 | 19.31 | 47.53 | 61.13 | 62.47 | 72.34 | 71.85 | 62.05 | 46.53 | 33.97 | 18.90 | 43.44 | |||||||||||||
1970 | 5.23 | 15.45 | 24.72 | a | 45.92 | 61.18 | 71.80 | 73.84 | 70.73 | 62.48 | 48.82 | 31.63 | 16.76 | 44.05 | ||||||||||||
1971 | 7.68 | 18.75 | 29.65 | 48.37 | 56.71 | 72.25 | 68.23 | 69.35 | 61.53 | 52.87 | 33.23 | 17.44 | 44.67 | |||||||||||||
1972 | 8.02 | 11.93 | 29.73 | a | 42.93 | 61.53 | 68.00 | 69.74 | 69.92 | 60.20 | 45.79 | 32.62 | 12.27 | 42.72 | ||||||||||||
1973 | 19.55 | 21.86 | 38.63 | 43.88 | 55.69 | 69.47 | 70.58 | 71.15 | 58.93 | 53.39 | 34.37 | 15.02 | 46.04 | |||||||||||||
1974 | 10.97 | b | 16.86 | 30.16 | 45.95 | 54.00 | 66.87 | 75.52 | 65.87 | 56.78 | 49.18 | 32.98 | 21.02 | 43.85 | ||||||||||||
1975 | 14.74 | 11.71 | 21.93 | a | 37.22 | 61.55 | 67.42 | 74.03 | 69.79 | 56.18 | 51.08 | 34.62 | 18.13 | 43.20 | ||||||||||||
1976 | 11.32 | 26.38 | 30.60 | 50.00 | 57.00 | a | 69.93 | 73.97 | 70.44 | 60.13 | 42.45 | 26.95 | 12.53 | a | 44.31 | |||||||||||
1977 | 0.27 | a | 22.14 | 36.00 | 52.00 | 67.76 | 68.95 | 72.66 | 64.79 | 61.57 | 46.35 | 30.88 | 15.24 | 44.88 | ||||||||||||
1978 | 2.53 | a | 8.71 | 28.56 | 43.75 | 59.45 | 67.73 | 70.32 | 69.35 | 65.97 | 48.13 | 30.15 | 13.50 | 42.35 | ||||||||||||
1979 | -1.48 | 3.09 | 24.65 | 40.78 | a | 53.22 | a | 66.67 | 71.48 | 66.52 | 61.43 | 46.61 | 31.42 | 24.71 | 40.76 | |||||||||||
1980 | 15.90 | 14.07 | 25.69 | 48.43 | 60.74 | 68.83 | 73.06 | 68.84 | 59.95 | 45.44 | 36.62 | 19.08 | 44.72 | |||||||||||||
1981 | 17.27 | 23.38 | 36.53 | a | 50.38 | 58.02 | 68.23 | 72.27 | 68.27 | 60.02 | a | 45.74 | 37.17 | 14.18 | 45.96 | |||||||||||
1982 | -0.06 | 13.79 | 29.76 | 40.95 | 60.66 | 63.03 | 73.31 | 68.74 | 59.86 | b | 49.39 | 28.03 | 24.71 | 42.68 | ||||||||||||
1983 | 17.32 | a | 23.79 | 30.23 | 40.34 | b | 53.82 | 67.62 | 77.13 | 74.76 | 61.78 | 47.68 | 34.20 | 0.18 | a | 44.07 | ||||||||||
1984 | 12.27 | 25.40 | 21.35 | a | 45.75 | 55.56 | 68.80 | 71.44 | 71.61 | 55.25 | 50.66 | 33.62 | 18.40 | 44.18 | ||||||||||||
1985 | 9.75 | a | 14.98 | a | 35.69 | 50.93 | a | 63.02 | a | 64.40 | 70.19 | 64.60 | 58.55 | 45.71 | 21.58 | 7.11 | 42.21 | |||||||||
1986 | 17.10 | 13.39 | 33.33 | a | 47.75 | 58.55 | a | 70.37 | 72.71 | 65.45 | 59.87 | 48.42 | 27.60 | 24.56 | 44.93 | |||||||||||
1987 | 21.81 | 31.82 | 36.18 | 52.52 | 65.44 | 71.85 | 74.02 | 67.02 | 61.10 | 43.89 | 37.62 | 23.35 | 48.88 | |||||||||||||
1988 | 8.31 | 10.33 | 33.58 | 44.29 | a | 66.44 | 74.79 | a | 73.66 | 72.65 | 60.81 | a | 44.26 | b | 32.00 | 21.29 | 45.20 | |||||||||
1989 | 23.23 | 8.59 | 24.76 | 44.52 | 58.23 | 67.88 | 74.76 | 69.65 | 58.84 | a | 48.79 | 27.88 | 10.73 | 43.15 | ||||||||||||
1990 | 26.71 | 22.71 | 34.60 | a | 46.28 | 55.82 | 70.00 | 70.00 | 68.61 | 63.78 | 46.08 | 35.35 | 14.57 | a | 46.21 | |||||||||||
1991 | 10.29 | 25.89 | 31.63 | 48.22 | 60.39 | 72.43 | 71.65 | 69.68 | 60.02 | 45.82 | 23.21 | a | 21.57 | a | 45.07 | |||||||||||
1992 | 22.77 | 26.81 | 33.20 | a | 40.82 | 60.82 | 66.05 | 63.61 | 63.71 | 58.25 | 47.39 | 29.77 | 17.40 | 44.22 | ||||||||||||
1993 | 11.83 | a | 13.38 | 27.23 | 41.68 | 55.63 | 63.83 | 69.55 | a | 69.48 | 54.52 | b | 46.16 | 28.77 | 19.47 | 41.79 | ||||||||||
1994 | 2.40 | 8.63 | a | 33.37 | 44.18 | 61.17 | a | 69.70 | 68.48 | 65.57 | a | 62.74 | a | 51.31 | 36.75 | 23.21 | 43.96 | |||||||||
1995 | 16.74 | 20.11 | 31.90 | 39.63 | 54.73 | 70.38 | 71.21 | 72.11 | 58.25 | 46.81 | 25.52 | a | 18.65 | 43.84 | ||||||||||||
1996 | 6.27 | 17.69 | 24.22 | a | 40.58 | 53.58 | 69.52 | a | 69.21 | 67.50 | 58.88 | 48.52 | 22.98 | b | 10.37 | 40.78 | ||||||||||
1997 | 7.94 | 19.38 | 28.56 | 40.87 | 52.66 | 69.98 | 70.69 | 68.06 | 61.68 | 49.74 | b | 26.67 | 26.05 | 43.52 | ||||||||||||
1998 | 15.13 | 29.41 | 26.25 | a | 47.83 | 64.76 | 65.13 | 71.21 | 70.55 | 66.22 | 50.90 | 35.85 | 24.98 | 47.35 | ||||||||||||
1999 | 10.42 | 27.32 | 31.83 | a | 46.65 | 59.13 | 67.57 | 73.95 | 68.81 | 60.03 | 47.71 | 41.67 | 24.42 | 46.63 | ||||||||||||
2000 | 13.95 | 26.79 | 39.35 | 43.97 | a | 59.74 | 65.60 | a | 68.79 | 68.80 | a | 59.68 | 50.98 | 28.47 | 4.40 | 44.21 | ||||||||||
2001 | 17.94 | 7.69 | a | 23.37 | 45.05 | 59.63 | 67.95 | a | 72.48 | 70.58 | 59.30 | 47.56 | 45.72 | 25.55 | 45.23 | |||||||||||
2002 | 22.87 | 27.66 | 21.42 | 44.43 | 53.82 | 71.85 | c | 75.11 | 68.47 | 62.35 | 41.00 | 31.78 | 25.48 | 45.52 | ||||||||||||
2003 | 14.08 | a | 14.25 | 28.55 | 46.37 | 55.39 | 65.65 | 71.31 | 71.27 | 59.47 | 49.63 | 29.87 | 22.65 | 44.04 | ||||||||||||
2004 | 12.15 | 17.59 | 35.19 | 46.82 | 56.06 | 64.43 | 69.52 | 63.29 | 64.67 | 49.71 | 37.03 | 22.90 | 44.95 | |||||||||||||
2005 | 13.39 | 25.68 | 29.40 | 49.88 | 55.27 | 71.30 | 72.77 | a | 68.81 | 65.35 | 50.29 | 35.05 | 15.95 | 46.10 | ||||||||||||
2006 | 26.38 | a | 17.59 | 29.11 | 50.85 | 58.84 | 69.18 | 73.73 | 69.84 | 58.02 | 45.68 | 34.67 | 27.10 | 46.75 | ||||||||||||
2007 | 18.03 | 11.00 | 35.18 | 43.67 | 62.56 | 68.78 | 71.87 | 68.68 | 62.42 | 53.24 | 33.70 | 14.10 | 45.27 | |||||||||||||
2008 | 10.19 | 13.24 | 26.97 | 41.58 | 55.40 | 66.00 | 71.27 | 67.61 | 60.02 | 47.69 | 32.87 | 11.79 | 42.05 | |||||||||||||
2009 | 6.66 | 18.66 | 29.15 | 43.82 | 57.42 | 64.98 | 65.03 | 65.65 | 62.17 | 41.31 | 39.95 | a | 13.35 | 42.35 | ||||||||||||
2010 | 7.42 | a | 10.52 | 33.40 | 51.73 | 57.94 | 67.72 | 71.82 | 72.98 | 58.20 | 51.34 | 33.18 | 12.53 | 44.07 | ||||||||||||
2011 | 5.85 | 13.82 | 25.26 | 43.27 | 56.11 | 67.07 | 76.40 | 69.58 | 58.35 | 51.76 | 35.27 | 25.26 | 44.00 | |||||||||||||
2012 | 21.50 | 25.29 | 45.34 | 48.92 | 62.61 | 70.42 | 76.79 | 68.06 | 59.55 | 44.89 | 34.90 | 19.31 | 48.13 | |||||||||||||
2013 | 15.53 | 15.62 | 23.66 | 36.33 | 54.84 | 65.88 | 70.35 | 68.76 | 63.92 | 47.92 | 29.68 | 10.10 | 41.88 | |||||||||||||
2014 | 8.71 | 8.80 | a | 24.94 | 42.15 | 57.95 | 68.18 | 68.69 | 69.37 | 61.35 | ----- | z | ----- | z | ----- | z | 45.57 | c | ||||||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 12.86 | 17.94 | 29.59 | 45.44 | 58.62 | 68.38 | 72.25 | 69.72 | 60.84 | 49.27 | 32.66 | 18.75 | 44.73 | |||||||||||||
S.D. | 6.51 | 6.08 | 5.49 | 4.00 | 3.53 | 2.64 | 2.72 | 2.77 | 2.78 | 3.76 | 4.66 | 5.92 | 1.71 | |||||||||||||
SKEW | 0.12 | 0.19 | 0.19 | 0.04 | 0.42 | -0.17 | -0.36 | 0.26 | -0.02 | 0.43 | -0.08 | -0.46 | -0.13 | |||||||||||||
MAX | 27.44 | 31.82 | 45.34 | 54.92 | 67.76 | 74.79 | 77.50 | 77.69 | 67.90 | 59.71 | 45.72 | 30.10 | 48.88 | |||||||||||||
MIN | -1.48 | 3.09 | 18.77 | 36.33 | 52.66 | 62.47 | 63.61 | 63.29 | 52.92 | 41.00 | 21.58 | 0.18 | 40.76 | |||||||||||||
YRS | 75 | 75 | 74 | 74 | 74 | 75 | 76 | 75 | 75 | 73 | 75 | 75 | 69 |