YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
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 | 48.33 | c | 42.20 | a | 45.27 | j |
1956 | 37.68 | 34.04 | b | 48.35 | 58.65 | g | 64.83 | a | 73.69 | a | 81.20 | a | 79.86 | b | 71.07 | 58.17 | a | 47.76 | a | 39.27 | a | 57.81 | a | |||
1957 | 27.87 | 39.26 | a | ----- | z | 59.03 | 66.71 | 77.66 | a | 82.61 | 81.13 | a | 77.53 | 58.27 | i | 49.10 | 45.00 | 60.59 | b | |||||||
1958 | 40.58 | 49.64 | 45.97 | 57.20 | 77.13 | 76.00 | 83.13 | 87.42 | 75.41 | a | 70.00 | f | 53.76 | a | 48.83 | a | 63.19 | a | ||||||||
1959 | 46.26 | 41.71 | 53.84 | 65.00 | a | 62.42 | 79.23 | 88.81 | 84.45 | 74.23 | d | 66.55 | 55.43 | 42.30 | a | 63.35 | ||||||||||
1960 | 34.45 | 42.10 | 54.37 | a | 60.07 | b | 62.91 | i | 79.83 | 89.68 | c | 80.97 | 78.43 | 64.16 | 45.33 | 37.95 | i | 62.94 | b | |||||||
1961 | 43.00 | i | 46.89 | 49.60 | a | 58.50 | 64.92 | f | 82.90 | a | 90.10 | a | 87.94 | 69.85 | c | 58.44 | f | 47.14 | a | 37.70 | a | 63.40 | c | |||
1962 | 32.53 | a | 39.48 | a | 46.86 | b | 65.45 | a | 62.74 | 76.77 | 82.63 | a | 81.40 | a | 79.85 | d | 63.38 | b | 51.38 | a | 43.60 | k | 62.04 | a | ||
1963 | 38.15 | d | 53.83 | j | 49.23 | 51.54 | d | 67.55 | 72.34 | a | 80.67 | a | 82.90 | a | 78.97 | a | 68.29 | g | 48.32 | b | 35.88 | n | 63.30 | c | ||
1964 | 37.46 | c | 43.14 | 46.03 | 57.57 | 65.93 | b | 71.70 | 84.71 | ----- | z | ----- | z | 64.67 | s | 46.14 | b | 39.27 | p | 56.59 | d | |||||
1965 | 39.00 | c | ----- | z | ----- | z | ----- | z | 66.45 | b | 74.30 | 83.89 | c | 79.81 | 71.07 | a | 74.50 | i | 51.18 | b | 38.93 | c | 63.08 | d | ||
1966 | 37.33 | a | 40.54 | 52.87 | 62.25 | j | 75.93 | b | 73.18 | b | 83.58 | 84.65 | 79.00 | d | 64.64 | f | 48.54 | d | 38.33 | a | 61.39 | b | ||||
1967 | 42.13 | 47.78 | a | 47.68 | 50.64 | h | 70.55 | b | 74.90 | a | 88.80 | a | 90.21 | b | 81.21 | b | 65.04 | g | 50.40 | 38.35 | 63.20 | b | ||||
1968 | 39.33 | d | 50.83 | 55.14 | c | 59.70 | j | 72.52 | b | 82.67 | c | 93.19 | 81.25 | c | 79.60 | 68.62 | j | 49.69 | a | 40.10 | 64.43 | b | ||||
1969 | 39.57 | a | 39.81 | b | 50.26 | 65.57 | g | 76.41 | b | 78.53 | 87.61 | 89.03 | 81.36 | e | 61.77 | e | 55.67 | c | 43.23 | 63.93 | a | |||||
1970 | 42.26 | 51.58 | b | 53.52 | 56.27 | h | 72.81 | 81.14 | a | 89.81 | 90.13 | 77.37 | 66.32 | l | 50.27 | 37.29 | 64.62 | b | ||||||||
1971 | 44.03 | 48.21 | 48.71 | 59.08 | f | 73.59 | d | 76.10 | a | 87.74 | d | 89.90 | 77.00 | b | 53.25 | k | 51.37 | 39.67 | a | 63.63 | b | |||||
1972 | 39.88 | f | 46.76 | 59.27 | e | 60.48 | e | 76.52 | d | 80.75 | f | 87.69 | e | 87.16 | 72.07 | 62.40 | a | 43.27 | d | 26.59 | d | 62.22 | b | |||
1973 | 33.00 | a | 39.96 | 45.57 | a | 51.85 | c | 73.19 | d | 77.17 | f | 88.45 | b | 85.97 | 75.69 | d | 68.10 | 45.64 | e | ----- | z | 60.74 | b | |||
1974 | 38.31 | b | 44.46 | b | 48.41 | b | 59.46 | d | 66.83 | g | 84.20 | e | 91.86 | q | 83.59 | b | 83.75 | f | 68.83 | g | 52.07 | c | ----- | z | 58.64 | e |
1975 | 36.50 | k | 40.16 | c | 44.00 | i | 48.92 | d | 66.45 | i | 73.83 | l | 83.80 | u | 81.89 | l | 81.95 | j | 56.77 | r | 40.31 | q | 45.57 | q | 44.54 | j |
1976 | 38.82 | n | 42.79 | j | 43.43 | h | 57.60 | t | 70.16 | f | 69.72 | l | 88.22 | h | 74.15 | r | 72.87 | o | 63.50 | m | 56.25 | v | 43.94 | o | ----- | z |
1977 | 35.05 | i | 42.17 | e | 45.63 | d | 67.37 | c | 54.41 | n | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 51.72 | i |
1978 | 40.88 | f | 43.35 | b | 57.77 | 55.59 | a | 64.87 | 75.03 | 85.79 | g | 79.85 | d | 70.69 | d | 69.90 | b | 45.79 | a | 34.47 | a | 59.73 | b | |||
1979 | 27.92 | g | 42.07 | a | 52.77 | 56.07 | c | 67.37 | d | 79.15 | d | 87.30 | d | 84.82 | n | 80.75 | f | 61.64 | f | 43.59 | c | 42.93 | a | 58.91 | d | |
1980 | 38.04 | e | 48.28 | 49.60 | a | 63.14 | b | 65.58 | 68.84 | k | 84.32 | 80.39 | c | 78.30 | c | 63.65 | 50.32 | b | 40.93 | c | 60.23 | a | ||||
1981 | 39.22 | d | 48.95 | i | 51.65 | 61.69 | a | 65.76 | f | 73.86 | a | 82.53 | a | 87.79 | b | 75.07 | c | 59.04 | e | 49.04 | b | 42.80 | a | 62.27 | b | |
1982 | 33.00 | e | 45.56 | l | 47.00 | 55.52 | a | 67.04 | d | 74.61 | b | 80.03 | b | 83.50 | a | 69.58 | d | 57.73 | i | 42.56 | c | 36.65 | 58.95 | b | ||
1983 | 41.97 | 45.73 | b | 49.35 | 54.62 | d | 65.48 | d | 73.25 | j | 81.41 | n | ----- | z | 74.15 | d | ----- | z | ----- | z | ----- | z | 55.22 | f | ||
1984 | ----- | z | ----- | z | 51.33 | d | 54.27 | d | 65.83 | g | 62.92 | q | 83.94 | n | 84.57 | c | 69.26 | g | 52.29 | c | ----- | z | ----- | z | 60.61 | h |
1985 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1986 | ----- | z | ----- | z | ----- | z | 62.43 | p | 77.31 | r | 85.33 | o | 80.20 | k | ----- | z | 65.54 | d | 66.04 | g | 54.83 | g | 41.43 | q | 65.54 | k |
1987 | 38.68 | f | 46.65 | k | 46.00 | i | 68.74 | g | 74.75 | w | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1988 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1989 | ----- | z | ----- | z | ----- | z | 64.63 | 64.96 | e | 76.71 | b | 88.37 | a | 79.76 | b | 78.52 | c | 63.96 | d | 50.00 | b | 46.71 | c | 68.18 | c | |
1990 | 43.88 | g | 45.42 | b | 55.93 | b | 68.86 | h | 63.14 | b | 79.36 | e | 88.04 | d | 85.41 | d | 80.04 | c | 66.00 | h | 51.96 | f | 34.52 | b | 66.48 | d |
1991 | 41.29 | 53.93 | a | 49.07 | c | 57.39 | b | 62.82 | c | 73.33 | c | 89.83 | a | ----- | z | 82.41 | c | 68.40 | a | 51.00 | d | 41.58 | g | 62.95 | b | |
1992 | 41.18 | c | 52.46 | a | 59.93 | b | 67.00 | c | 78.44 | d | 80.08 | f | 81.85 | e | 88.67 | g | 81.22 | c | 66.96 | h | 45.54 | f | 35.61 | c | 62.21 | d |
1993 | 33.00 | c | 32.96 | b | 48.30 | a | 57.38 | d | 72.88 | f | 70.93 | a | 74.03 | b | 80.57 | c | 78.58 | f | 63.24 | f | 47.56 | e | 41.70 | d | 54.05 | c |
1994 | 44.73 | a | 42.72 | c | 60.31 | b | 61.43 | g | 71.00 | c | 76.85 | c | 88.44 | f | 88.52 | d | 77.29 | f | 65.33 | d | 39.33 | c | 39.00 | d | 58.64 | c |
1995 | 42.59 | b | 58.17 | d | 55.66 | b | 57.38 | a | ----- | z | 73.38 | d | 84.14 | b | 83.96 | d | 78.83 | g | 66.54 | e | 54.44 | c | ----- | z | 64.03 | c |
1996 | 41.93 | d | 45.33 | e | 56.12 | g | 59.57 | b | 61.59 | d | 75.90 | i | 88.35 | k | 88.52 | d | ----- | z | 65.77 | e | ----- | z | 47.15 | e | 58.55 | e |
1997 | 42.00 | a | 47.84 | c | 59.69 | e | 56.43 | g | 71.69 | e | 79.04 | d | 84.70 | d | 86.63 | d | 81.44 | c | 71.79 | g | 53.96 | e | ----- | z | 67.44 | c |
1998 | 46.23 | e | 43.79 | d | 54.21 | b | 55.50 | d | 52.08 | f | 71.96 | d | 89.21 | c | 88.93 | d | 77.80 | e | 64.12 | g | 49.00 | b | 42.48 | f | 64.07 | c |
1999 | ----- | z | 38.77 | b | 50.26 | d | 51.24 | e | 64.19 | d | 74.76 | e | 86.79 | c | 88.04 | d | 78.48 | e | 71.63 | d | 56.87 | g | 41.40 | f | 67.13 | c |
2000 | 40.62 | g | 47.00 | h | 56.32 | f | 66.73 | h | 64.92 | g | 78.83 | f | 84.96 | d | 89.48 | d | 76.75 | b | 64.33 | g | 44.59 | c | 39.78 | d | 67.11 | g |
2001 | 38.24 | b | 41.27 | b | 57.04 | d | 54.50 | f | 76.82 | c | 76.27 | h | 84.28 | f | 89.71 | c | 82.08 | f | 68.00 | f | 52.58 | f | 40.11 | d | 57.20 | f |
2002 | 40.85 | e | 46.48 | e | 52.00 | d | 60.05 | i | 65.85 | e | 78.62 | d | 91.90 | b | 85.07 | c | 79.00 | d | 60.30 | d | 49.96 | f | 50.04 | d | 65.01 | b |
2003 | 46.23 | e | 45.44 | c | 50.31 | e | 57.52 | c | 70.07 | c | 85.19 | c | 94.45 | b | 89.10 | b | 84.52 | e | 71.69 | e | 44.08 | d | 41.90 | b | 65.04 | |
2004 | 38.00 | b | 38.60 | d | 62.61 | c | 63.41 | c | 70.44 | d | 80.96 | f | 85.46 | c | 86.54 | c | 78.52 | c | 59.90 | b | 46.27 | d | 46.36 | f | 62.97 | b |
2005 | 44.37 | d | 46.83 | d | 57.00 | b | ----- | z | 65.04 | f | 68.57 | g | 90.07 | d | 88.11 | d | 75.42 | d | 63.78 | d | 44.04 | g | 33.59 | b | 62.40 | d |
2006 | 43.93 | d | 41.10 | g | 46.41 | d | ----- | z | 70.92 | f | 80.57 | b | 90.04 | c | 85.08 | g | 80.19 | d | ----- | z | 49.65 | d | 42.40 | a | 61.88 | e |
2007 | 35.97 | 47.27 | b | 58.50 | c | 56.93 | b | 62.16 | f | 83.00 | f | 89.61 | h | 82.35 | k | 76.08 | e | 55.48 | b | 49.57 | 34.57 | a | 51.80 | d | ||
2008 | 29.19 | 37.79 | a | 40.90 | 50.48 | c | 61.88 | e | 66.90 | a | 88.92 | e | 87.72 | f | 77.88 | d | ----- | z | ----- | z | 41.57 | a | 55.06 | c | ||
2009 | 44.03 | b | ----- | z | ----- | z | ----- | z | 80.50 | y | 80.09 | s | 89.62 | r | 89.47 | l | 83.83 | l | 59.86 | q | 51.30 | j | 35.43 | h | 44.03 | k |
2010 | 42.38 | j | 42.88 | k | 56.20 | k | 57.65 | j | 62.18 | i | 75.22 | g | 86.86 | i | 85.32 | i | 78.00 | p | 64.72 | m | 50.83 | r | 42.20 | p | ----- | z |
2011 | 40.67 | m | 41.67 | p | 49.12 | n | 54.47 | o | 62.00 | m | 73.18 | m | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 39.37 | 44.33 | 51.88 | 58.18 | 68.78 | 76.63 | 86.35 | 85.32 | 76.88 | 63.73 | 48.69 | 40.13 | 64.20 | |||||||||||||
S.D. | 4.58 | 5.22 | 4.97 | 4.81 | 5.09 | 4.07 | 4.09 | 3.52 | 4.08 | 4.94 | 3.71 | 4.73 | 1.19 | |||||||||||||
SKEW | -0.61 | 0.25 | 0.25 | 0.14 | 0.39 | 0.09 | -0.56 | -0.26 | -0.75 | -0.40 | -0.22 | -0.29 | -0.00 | |||||||||||||
MAX | 46.26 | 58.17 | 62.61 | 67.37 | 78.44 | 85.19 | 94.45 | 90.21 | 84.52 | 71.69 | 55.67 | 50.04 | 65.04 | |||||||||||||
MIN | 27.87 | 32.96 | 40.90 | 48.92 | 61.59 | 66.90 | 74.03 | 79.76 | 65.54 | 52.29 | 39.33 | 26.59 | 63.35 | |||||||||||||
YRS | 38 | 40 | 42 | 32 | 34 | 34 | 38 | 38 | 38 | 22 | 37 | 33 | 2 |