YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1937 | ----- | z | ----- | z | ----- | z | ----- | z | 72.71 | 79.21 | a | 89.53 | a | 89.39 | 76.47 | 56.97 | 40.80 | 25.50 | a | 66.32 | d | |||||
1938 | 22.35 | 25.36 | 46.35 | 56.40 | 65.29 | 78.50 | 85.61 | 88.35 | 77.90 | 69.84 | 41.07 | 32.23 | a | 57.44 | ||||||||||||
1939 | 28.19 | 21.64 | 40.81 | 55.43 | 78.58 | 81.70 | 87.87 | 83.06 | 79.63 | 59.68 | 50.07 | 40.00 | 58.89 | |||||||||||||
1940 | 13.97 | 27.41 | 31.73 | e | 52.83 | 70.06 | 80.38 | a | 89.26 | 77.71 | 78.40 | 67.87 | 33.53 | 30.16 | 54.44 | |||||||||||
1941 | 25.74 | 25.43 | 36.81 | 60.40 | 76.19 | 78.13 | 85.77 | 84.61 | 74.37 | 61.42 | 44.63 | 34.45 | 57.33 | |||||||||||||
1942 | 29.32 | 28.11 | 42.94 | 65.00 | 65.39 | 76.37 | 83.58 | 82.29 | 67.73 | 61.39 | 43.63 | 24.19 | 55.83 | |||||||||||||
1943 | 15.19 | 29.96 | 34.68 | 57.80 | 66.00 | 79.93 | 87.16 | 81.74 | 68.80 | 61.83 | a | 35.37 | 31.48 | 54.16 | ||||||||||||
1944 | 36.19 | 31.10 | 32.23 | 50.70 | 72.35 | 81.40 | 83.68 | 81.39 | 72.43 | 63.90 | 42.13 | 27.77 | 56.27 | |||||||||||||
1945 | 22.55 | 29.46 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 26.01 | j | ||
1946 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1947 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 74.33 | 84.52 | 89.55 | 77.73 | 71.39 | 36.87 | 26.58 | 65.85 | e | |||||||
1948 | 20.55 | 28.04 | a | 36.65 | 64.53 | 69.84 | 78.07 | 86.77 | 83.71 | 80.37 | 62.93 | a | 40.80 | 27.67 | a | 56.66 | ||||||||||
1949 | 20.60 | a | 25.14 | 38.14 | b | 59.21 | a | 74.39 | 82.73 | 87.68 | 85.94 | 72.00 | 64.32 | 50.27 | 30.26 | 57.56 | ||||||||||
1950 | 15.87 | a | 28.64 | 33.73 | a | 45.73 | 66.53 | a | 81.04 | b | 80.39 | 78.96 | c | 74.19 | c | 67.93 | c | 38.00 | 23.00 | 52.83 | ||||||
1951 | 17.57 | a | 28.89 | a | 27.52 | 48.80 | 71.29 | 73.57 | 82.38 | b | 77.70 | k | 67.57 | 59.00 | 35.03 | 23.10 | 48.61 | a | ||||||||
1952 | 22.67 | a | 31.28 | 31.65 | 59.80 | 69.13 | 83.80 | 87.48 | 82.10 | 78.03 | 58.90 | 45.69 | a | 29.00 | a | 56.63 | ||||||||||
1953 | 25.45 | 28.93 | 40.84 | 49.13 | 69.42 | 81.13 | 83.26 | 84.35 | 75.28 | a | 70.06 | 48.83 | 31.17 | a | 57.32 | |||||||||||
1954 | 20.23 | 41.15 | a | 35.59 | b | 59.23 | 66.41 | b | 81.63 | 86.53 | a | 81.74 | 72.24 | a | 56.00 | a | 49.00 | a | 30.23 | 56.67 | ||||||
1955 | 25.10 | 23.96 | 39.42 | 67.50 | 78.11 | l | 78.77 | 89.39 | 86.87 | 76.30 | 65.35 | 34.60 | 20.71 | 55.27 | a | |||||||||||
1956 | 20.77 | a | 23.90 | 35.55 | 53.28 | a | 71.29 | 86.03 | 81.30 | a | 82.55 | 74.40 | 70.63 | a | 43.00 | 35.00 | 56.47 | |||||||||
1957 | 22.10 | 33.79 | 40.00 | 58.57 | 68.10 | 77.90 | 88.39 | 79.84 | 71.69 | a | 57.81 | 40.77 | 35.13 | a | 56.17 | |||||||||||
1958 | 30.77 | 25.64 | 39.26 | 59.79 | a | 77.61 | 74.50 | 80.55 | 84.16 | ----- | z | 56.00 | u | 48.00 | 27.29 | 54.76 | b | |||||||||
1959 | 21.55 | 26.36 | 45.06 | 61.57 | 72.84 | 84.13 | 86.19 | 87.00 | a | 74.17 | 54.06 | 33.90 | 37.26 | 57.01 | ||||||||||||
1960 | 24.26 | 25.00 | 28.94 | 57.20 | 69.39 | 78.28 | e | 83.87 | 83.45 | 73.37 | 63.87 | 46.63 | 30.32 | 55.38 | ||||||||||||
1961 | 26.74 | 34.75 | 42.55 | 51.53 | 68.61 | 83.03 | a | 82.26 | 83.86 | c | 72.50 | 64.74 | 42.53 | 25.03 | 56.51 | |||||||||||
1962 | 22.16 | 24.19 | a | 32.84 | 54.73 | 73.47 | a | 77.47 | 80.32 | 82.61 | 71.23 | 64.14 | b | 49.10 | 32.42 | 55.39 | ||||||||||
1963 | 17.16 | 29.85 | a | 46.90 | 62.23 | 70.63 | a | 84.21 | a | 82.77 | 81.65 | 76.40 | 72.55 | b | 50.85 | c | 21.14 | c | 58.03 | |||||||
1964 | 33.68 | 38.41 | 36.65 | 59.67 | 76.10 | 82.97 | 88.23 | 80.00 | 72.97 | 63.06 | 43.67 | 22.77 | 58.18 | |||||||||||||
1965 | 20.65 | 23.89 | 27.81 | e | 51.90 | 71.45 | 80.30 | 83.52 | 79.84 | 61.07 | 65.14 | b | 43.20 | 35.71 | 53.71 | |||||||||||
1966 | 13.39 | 25.50 | 46.97 | 50.07 | 69.83 | a | 82.43 | 88.80 | a | 79.16 | 73.07 | 62.77 | 38.90 | 26.90 | 54.82 | |||||||||||
1967 | 26.45 | 24.86 | 43.58 | 57.90 | 68.00 | 77.20 | 82.68 | 80.00 | 74.33 | 60.23 | 43.17 | 31.58 | 55.83 | |||||||||||||
1968 | 26.35 | 26.14 | 54.90 | 62.60 | 68.00 | 82.60 | 81.55 | 81.10 | 72.90 | 62.06 | 41.67 | 23.74 | 56.97 | |||||||||||||
1969 | 15.06 | 26.61 | 30.32 | 58.40 | 73.68 | 74.60 | 82.94 | 84.35 | 75.03 | 55.84 | 42.73 | 26.94 | 53.88 | |||||||||||||
1970 | 15.48 | 27.89 | 32.65 | 57.10 | 74.65 | 84.67 | 86.84 | 82.61 | 74.20 | 58.48 | 38.93 | 26.81 | 55.03 | |||||||||||||
1971 | 16.45 | 27.25 | 37.39 | 60.90 | 71.52 | 83.37 | 80.16 | 83.39 | 74.60 | 63.71 | 41.93 | 26.61 | 55.61 | |||||||||||||
1972 | 18.10 | 22.00 | 38.61 | 53.77 | 73.26 | 80.73 | 80.35 | 80.42 | 72.87 | 56.65 | 37.57 | 20.71 | 52.92 | |||||||||||||
1973 | 27.77 | 30.57 | 45.65 | 55.30 | 68.26 | 82.30 | 82.58 | 83.65 | 71.13 | 66.39 | 43.57 | 23.23 | 56.70 | |||||||||||||
1974 | 21.47 | a | 26.61 | 38.90 | 57.00 | 65.68 | 80.07 | 88.16 | 78.35 | 72.07 | 63.23 | 41.93 | 29.42 | 55.24 | ||||||||||||
1975 | 23.81 | 20.93 | 31.35 | 43.47 | 74.13 | 77.50 | 86.87 | 82.03 | 69.93 | 65.10 | 45.23 | 25.55 | 53.83 | |||||||||||||
1976 | 22.29 | 34.86 | 39.23 | 63.17 | 71.40 | a | 83.90 | 88.19 | 83.94 | 75.50 | 55.13 | 38.50 | 24.90 | a | 56.75 | |||||||||||
1977 | 9.97 | 32.46 | 44.52 | 64.43 | 80.68 | 81.60 | 84.06 | 75.97 | 73.00 | 58.45 | 39.57 | 22.32 | 55.59 | |||||||||||||
1978 | 12.10 | 18.64 | 37.61 | 52.20 | 71.39 | 79.17 | 81.26 | 80.71 | 79.30 | 61.03 | 41.00 | 22.81 | 53.10 | |||||||||||||
1979 | 7.10 | 13.57 | 32.77 | 48.17 | a | 65.45 | 78.37 | 82.42 | 76.39 | 74.30 | 58.61 | 39.50 | 33.29 | 50.83 | ||||||||||||
1980 | 25.61 | 23.24 | 34.10 | 60.60 | 75.35 | 80.97 | 86.94 | 79.94 | 72.63 | 56.58 | 48.47 | 28.90 | 56.11 | |||||||||||||
1981 | 30.29 | 33.93 | 50.61 | 63.20 | 71.29 | 80.30 | 82.71 | 78.19 | 73.90 | a | 56.03 | 47.67 | 23.77 | 57.66 | ||||||||||||
1982 | 11.35 | 22.64 | 36.87 | 52.43 | 71.10 | 74.80 | 84.13 | 80.68 | 71.14 | a | 59.81 | 35.90 | 32.23 | 52.76 | ||||||||||||
1983 | 26.10 | 29.71 | 36.81 | 50.00 | b | 65.35 | 78.50 | 88.58 | 87.23 | 74.17 | 58.68 | 39.17 | 9.19 | 53.62 | ||||||||||||
1984 | 21.87 | 32.34 | 30.23 | 55.77 | 67.19 | 79.27 | 83.13 | 82.87 | 68.37 | 60.35 | 44.10 | 28.23 | 54.48 | |||||||||||||
1985 | 19.48 | 24.67 | a | 44.26 | 62.79 | a | 75.00 | a | 76.50 | 82.97 | 75.42 | 67.83 | 57.45 | 29.90 | 17.65 | 52.83 | ||||||||||
1986 | 26.03 | 20.46 | 41.70 | a | 58.07 | 70.42 | 82.77 | 83.03 | 77.16 | 69.87 | 59.03 | 36.87 | 34.39 | 54.98 | ||||||||||||
1987 | 31.26 | 43.75 | 45.65 | 68.10 | 79.48 | 85.17 | 84.84 | 78.94 | 74.53 | 56.58 | 47.40 | 30.00 | 60.47 | |||||||||||||
1988 | 19.35 | 21.00 | 42.58 | 58.07 | 81.87 | 90.27 | 87.94 | 85.61 | 75.17 | 58.07 | a | 41.17 | 31.00 | 57.67 | ||||||||||||
1989 | 34.74 | 19.32 | 33.84 | 56.37 | 72.00 | 81.27 | 86.77 | 81.45 | 72.17 | 64.81 | 38.13 | 20.03 | 55.07 | |||||||||||||
1990 | 36.90 | 35.36 | 44.53 | a | 60.60 | 67.97 | 81.90 | 81.35 | 79.55 | 77.20 | 59.77 | 46.80 | 25.81 | 58.15 | ||||||||||||
1991 | 20.65 | 36.54 | 41.68 | 59.33 | 68.74 | 82.27 | 82.39 | 80.58 | 72.23 | 59.61 | 30.47 | 30.20 | a | 55.39 | ||||||||||||
1992 | 30.65 | 33.07 | 42.16 | 50.13 | 74.16 | 77.60 | 73.16 | 75.10 | 71.77 | 59.81 | 34.70 | 26.03 | 54.03 | |||||||||||||
1993 | 22.10 | a | 21.18 | 35.61 | 51.87 | 65.61 | 73.43 | 78.45 | 79.55 | 66.07 | b | 58.10 | 37.87 | 26.45 | 51.36 | |||||||||||
1994 | 12.29 | 18.82 | 42.00 | 56.67 | 74.48 | 80.37 | 79.74 | 76.29 | 73.47 | 62.35 | 46.57 | 31.58 | 54.55 | |||||||||||||
1995 | 25.39 | 31.68 | 40.81 | 48.27 | 65.58 | 81.37 | 82.48 | 82.39 | 70.73 | 56.97 | 33.34 | a | 26.94 | 53.83 | ||||||||||||
1996 | 15.45 | 26.52 | 33.90 | 51.13 | 63.29 | 80.37 | 80.16 | 78.65 | 70.17 | 61.84 | 31.17 | a | 18.48 | 50.93 | ||||||||||||
1997 | 16.32 | 27.68 | 36.23 | 52.43 | 65.10 | 82.43 | 80.77 | 79.03 | 75.60 | 63.53 | a | 33.60 | 32.13 | 53.74 | ||||||||||||
1998 | 23.55 | 35.57 | 34.35 | 59.53 | 78.35 | 75.70 | 81.52 | 81.26 | 81.17 | 62.03 | 44.30 | 36.00 | 57.78 | |||||||||||||
1999 | 19.23 | 36.21 | 42.55 | 56.63 | 70.42 | 78.10 | 84.97 | 80.19 | 74.43 | 61.97 | 55.27 | 36.35 | 58.03 | |||||||||||||
2000 | 25.26 | 36.55 | 51.87 | 57.33 | 71.81 | 77.57 | 80.58 | 80.19 | 74.13 | 63.48 | 35.67 | 13.90 | 55.70 | |||||||||||||
2001 | 26.81 | 19.11 | 31.81 | 54.97 | 70.58 | 79.00 | 84.10 | 82.19 | 70.50 | 60.42 | 58.30 | 33.52 | 55.94 | |||||||||||||
2002 | 32.48 | 38.04 | 30.03 | 54.90 | 66.55 | 83.38 | a | 86.03 | 78.32 | 75.27 | 50.97 | 41.57 | 35.84 | 56.11 | ||||||||||||
2003 | 25.13 | 25.29 | 39.84 | 59.50 | 67.39 | 76.80 | 82.81 | 84.68 | 73.80 | 63.35 | 38.70 | 30.06 | 55.61 | |||||||||||||
2004 | 21.94 | 25.93 | 44.97 | 63.30 | 68.52 | 75.20 | 80.19 | 75.16 | 76.90 | 60.81 | 46.93 | 32.55 | 56.03 | |||||||||||||
2005 | 21.35 | 35.21 | 40.74 | 62.70 | 65.29 | 82.33 | 84.45 | 80.39 | 77.40 | 62.81 | 46.23 | 22.90 | 56.82 | |||||||||||||
2006 | 32.97 | 27.11 | 37.52 | 62.43 | 71.26 | 80.87 | 86.23 | 80.52 | 69.23 | 58.32 | 47.83 | 35.71 | 57.50 | |||||||||||||
2007 | 26.16 | 19.68 | 44.35 | 55.57 | 75.42 | 81.03 | 85.00 | 79.39 | 76.67 | 63.77 | 43.47 | 22.58 | 56.09 | |||||||||||||
2008 | 19.52 | 22.45 | 36.03 | 51.77 | 67.81 | 78.37 | 83.94 | 80.52 | 73.63 | 60.19 | 42.23 | 21.84 | 53.19 | |||||||||||||
2009 | 17.48 | 28.71 | 37.90 | 56.70 | 71.19 | 75.73 | 77.52 | 76.58 | 74.83 | 48.77 | 50.23 | 21.42 | 53.09 | |||||||||||||
2010 | 14.77 | a | 19.11 | 41.42 | 66.33 | 70.90 | 78.23 | 83.45 | 83.58 | 69.80 | 65.03 | 42.63 | 20.58 | 54.65 | ||||||||||||
2011 | 16.45 | 23.39 | 33.26 | 52.37 | 66.74 | 76.67 | 86.74 | 81.42 | 72.40 | 65.35 | 47.20 | 34.58 | 54.71 | |||||||||||||
2012 | 32.23 | 35.00 | 56.68 | 61.47 | 74.55 | 82.37 | 87.94 | 80.68 | 75.77 | 56.61 | 46.17 | 29.13 | 59.88 | |||||||||||||
2013 | 25.42 | 24.71 | 31.71 | 45.50 | 65.39 | 76.60 | 82.48 | 81.45 | 76.70 | 58.06 | 40.40 | 19.29 | 52.31 | |||||||||||||
2014 | 21.00 | 18.57 | 34.23 | 52.97 | 69.03 | 77.77 | 78.97 | 79.65 | 72.30 | ----- | z | ----- | z | ----- | z | 56.05 | c | |||||||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 22.46 | 27.61 | 38.67 | 56.72 | 70.73 | 79.91 | 83.97 | 81.38 | 73.49 | 61.27 | 42.09 | 27.65 | 55.53 | |||||||||||||
S.D. | 6.37 | 5.98 | 6.14 | 5.41 | 4.11 | 3.20 | 3.22 | 3.18 | 3.42 | 4.45 | 5.69 | 5.81 | 2.00 | |||||||||||||
SKEW | 0.08 | 0.33 | 0.54 | -0.17 | 0.54 | 0.20 | -0.37 | 0.33 | -0.54 | 0.14 | 0.12 | -0.41 | -0.14 | |||||||||||||
MAX | 36.90 | 43.75 | 56.68 | 68.10 | 81.87 | 90.27 | 89.53 | 89.55 | 81.17 | 72.55 | 58.30 | 40.00 | 60.47 | |||||||||||||
MIN | 7.10 | 13.57 | 27.52 | 43.47 | 63.29 | 73.43 | 73.16 | 75.10 | 61.07 | 48.77 | 29.90 | 9.19 | 50.83 | |||||||||||||
YRS | 75 | 75 | 74 | 74 | 74 | 76 | 76 | 75 | 75 | 74 | 75 | 75 | 70 |