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 | 69.10 | 78.61 | 88.50 | 95.39 | 89.10 | a | 86.73 | 75.39 | 68.10 | 58.29 | 78.80 | c | ||||||||
1943 | 54.71 | 60.57 | 63.65 | 72.77 | 81.58 | 86.37 | 93.29 | 87.84 | 87.93 | a | 75.03 | 66.33 | 51.97 | 73.50 | ||||||||||||
1944 | 51.97 | 50.69 | 59.26 | 65.00 | 77.33 | a | 84.43 | 92.23 | 93.90 | 86.25 | b | 76.23 | a | 57.31 | a | 54.19 | 70.73 | |||||||||
1945 | 50.16 | 56.29 | 56.00 | 69.13 | 78.29 | 86.67 | 92.42 | 88.68 | 86.83 | 75.94 | 65.38 | a | 48.65 | 71.20 | ||||||||||||
1946 | 51.90 | a | 59.18 | 64.37 | a | 74.66 | a | 78.74 | 92.37 | 91.65 | 86.74 | 85.00 | 71.00 | a | 58.43 | 57.87 | a | 72.66 | ||||||||
1947 | 52.19 | 63.86 | 65.94 | 71.30 | 83.28 | b | 87.40 | 94.71 | 89.03 | a | 89.60 | 76.65 | 57.10 | 51.20 | a | 73.52 | ||||||||||
1948 | 59.06 | 52.57 | a | ----- | z | 72.90 | 82.00 | a | 88.07 | 92.87 | 89.87 | 88.13 | 75.81 | 60.60 | 53.00 | 74.08 | a | |||||||||
1949 | 36.45 | 43.57 | 61.13 | 74.76 | a | 78.45 | 88.00 | 92.65 | 93.26 | 88.20 | 71.87 | 72.57 | 52.06 | 71.08 | ||||||||||||
1950 | 51.87 | 61.75 | 64.65 | 76.10 | 79.45 | 90.10 | 88.42 | 93.06 | 83.53 | 84.45 | 70.80 | 64.87 | 75.75 | |||||||||||||
1951 | 54.52 | 56.71 | 63.61 | 69.93 | 78.71 | 89.21 | a | 95.87 | 90.26 | 90.10 | 74.71 | 60.43 | 50.26 | 72.86 | ||||||||||||
1952 | 50.23 | 54.83 | 52.97 | 68.37 | 81.39 | 86.67 | 91.84 | 91.97 | 87.73 | ----- | z | 58.13 | 52.39 | 70.59 | a | |||||||||||
1953 | 61.94 | 58.61 | 65.23 | 70.67 | 71.81 | 89.30 | 93.27 | a | 89.48 | 90.27 | 76.58 | 64.90 | 55.90 | 74.00 | ||||||||||||
1954 | 54.16 | 65.04 | 60.48 | 76.90 | 82.65 | 87.77 | 92.35 | 88.45 | b | 87.17 | 79.83 | b | 70.60 | 56.39 | 75.15 | |||||||||||
1955 | 45.55 | b | 52.11 | 64.29 | 68.89 | b | 77.77 | 87.00 | 89.84 | 87.74 | 88.47 | 80.26 | 62.70 | 59.16 | 71.98 | |||||||||||
1956 | 58.45 | 53.28 | 68.40 | a | 69.52 | g | 80.38 | b | 90.17 | g | 91.26 | 89.27 | a | 91.47 | 75.32 | 65.66 | a | 57.35 | 73.08 | b | ||||||
1957 | 50.77 | a | 60.86 | 62.26 | 67.86 | a | 72.23 | 91.10 | 93.24 | b | 88.10 | 88.35 | d | 68.60 | a | 57.60 | ----- | z | 72.81 | a | ||||||
1958 | 55.32 | 58.04 | 51.84 | 59.19 | c | 83.55 | 89.11 | l | 94.68 | i | 93.58 | 85.28 | e | 74.21 | c | 62.40 | 64.97 | 68.84 | b | |||||||
1959 | 57.14 | c | 52.22 | a | 65.55 | 73.83 | 75.82 | c | 91.13 | 95.23 | 85.45 | 82.80 | 77.90 | 65.03 | 54.68 | 73.07 | ||||||||||
1960 | 43.73 | a | 51.03 | 66.77 | 72.00 | b | 78.12 | e | 92.82 | b | 95.53 | a | 92.53 | a | 88.13 | 72.24 | b | 63.03 | 54.23 | 72.51 | ||||||
1961 | 57.39 | 58.18 | 60.97 | 71.43 | 77.07 | b | 92.10 | 93.65 | 87.19 | ----- | z | 77.13 | 59.04 | f | 48.19 | 72.33 | b | |||||||||
1962 | 50.55 | 54.74 | a | 56.39 | 75.17 | 76.03 | a | 81.21 | b | 91.71 | 93.06 | 84.80 | 74.60 | a | 65.61 | b | 57.94 | 71.82 | ||||||||
1963 | 50.68 | 66.65 | h | 61.10 | 65.50 | 82.45 | 85.17 | 96.61 | 85.00 | a | 84.90 | 77.03 | a | 61.38 | a | 57.29 | 73.37 | a | ||||||||
1964 | 51.48 | 53.24 | 58.84 | 66.73 | 79.58 | 88.43 | 94.35 | 88.42 | 84.31 | a | 81.71 | 58.83 | 55.00 | 71.74 | ||||||||||||
1965 | 56.48 | 56.25 | 59.26 | 65.17 | a | 76.65 | 82.60 | j | 91.61 | 92.29 | 81.30 | 79.35 | 64.07 | 51.13 | 70.32 | a | ||||||||||
1966 | 50.35 | 50.96 | 65.35 | 73.57 | 81.19 | 88.27 | 91.16 | 90.57 | a | 84.30 | 74.48 | 65.97 | 53.81 | 72.50 | ||||||||||||
1967 | 54.81 | 62.25 | 65.71 | 64.53 | 77.55 | 83.53 | 90.32 | 89.55 | 84.33 | 78.00 | 67.03 | 41.97 | 71.63 | |||||||||||||
1968 | 41.68 | ----- | z | 63.00 | 66.90 | ----- | z | 89.90 | 90.13 | 83.71 | 85.17 | 75.74 | 62.63 | 51.06 | 70.99 | b | ||||||||||
1969 | 54.61 | 54.04 | 57.87 | 73.97 | 82.19 | 87.47 | 91.23 | 92.74 | 86.30 | 70.26 | 61.17 | a | 55.41 | b | 72.27 | |||||||||||
1970 | 54.77 | 65.09 | q | ----- | z | 61.43 | w | 79.23 | 88.77 | 93.19 | 88.71 | 82.19 | d | 71.52 | 65.47 | 50.13 | 74.89 | c | ||||||||
1971 | 55.10 | 56.96 | 64.00 | 68.67 | 72.42 | 87.10 | 95.16 | 86.45 | 84.83 | 66.74 | 61.20 | 45.39 | 70.34 | |||||||||||||
1972 | 55.32 | 61.83 | 73.35 | 71.60 | 79.10 | 85.53 | 93.97 | 89.32 | 82.97 | 67.74 | 54.07 | 49.13 | 71.99 | |||||||||||||
1973 | 47.90 | 52.57 | 51.19 | 64.40 | 78.26 | 87.20 | 92.29 | 89.61 | 85.57 | 77.32 | 62.10 | 58.03 | 70.54 | |||||||||||||
1974 | 49.16 | 56.56 | a | 63.94 | 69.93 | 80.29 | 94.30 | 86.65 | 86.61 | 84.80 | 73.32 | 61.70 | 51.32 | 71.55 | ||||||||||||
1975 | 54.00 | 53.96 | 58.61 | 59.89 | b | 75.00 | 86.57 | 92.10 | 91.77 | 85.70 | 76.58 | 63.90 | 54.19 | 71.02 | ||||||||||||
1976 | 57.32 | 59.31 | 61.26 | 68.17 | 80.06 | 87.67 | 91.58 | 90.26 | 80.33 | 72.13 | a | 66.93 | 57.77 | 72.73 | ||||||||||||
1977 | 50.58 | 62.21 | 59.87 | 70.72 | e | 72.81 | 89.70 | 91.94 | 89.74 | 84.21 | a | 76.61 | 67.23 | 61.21 | b | 73.07 | ||||||||||
1978 | 51.61 | 54.11 | 62.26 | 67.50 | 77.58 | 89.37 | 92.10 | 90.81 | 84.27 | 79.06 | 58.80 | 48.90 | 71.36 | |||||||||||||
1979 | 44.68 | 53.56 | a | 59.60 | a | 68.47 | 75.06 | 87.30 | 94.61 | c | 88.10 | b | 91.41 | h | 81.13 | 60.17 | f | 60.14 | i | 72.50 | c | |||||
1980 | 52.34 | b | 58.76 | 57.90 | 67.75 | b | 71.94 | 89.27 | 93.68 | 90.03 | 86.47 | 77.03 | 66.73 | d | 62.14 | b | 72.84 | |||||||||
1981 | 59.70 | a | 60.27 | f | 60.53 | a | 74.59 | a | 77.16 | 92.77 | 92.48 | 92.06 | 86.10 | a | 72.21 | c | 69.50 | f | 58.50 | i | 78.62 | c | ||||
1982 | 53.65 | k | 54.95 | i | 60.68 | i | 69.14 | h | 76.80 | f | 86.83 | f | 90.12 | g | 88.83 | g | 81.74 | g | 74.00 | j | 64.35 | j | 50.09 | i | ----- | z |
1983 | 55.04 | g | 56.27 | f | 56.11 | c | 62.52 | a | 74.20 | f | 86.74 | g | 92.80 | k | 86.82 | i | 84.77 | h | 72.55 | i | 60.50 | l | 54.29 | j | 59.31 | j |
1984 | 56.95 | i | 60.04 | d | 65.42 | g | 69.76 | i | 85.74 | h | 87.27 | 91.50 | e | 92.43 | c | 85.32 | h | 66.79 | g | 61.30 | j | 48.37 | l | 82.81 | h | |
1985 | 49.42 | g | 52.14 | g | 59.43 | j | 74.55 | h | 80.48 | d | 90.46 | b | 93.58 | 91.40 | a | 80.68 | e | 72.64 | i | 57.26 | k | 56.14 | j | 87.32 | g | |
1986 | 61.57 | j | 60.63 | i | 64.76 | j | 70.32 | h | 78.81 | j | 88.40 | j | 87.23 | i | 87.24 | j | 77.20 | j | 71.77 | i | 64.21 | k | 54.60 | k | ----- | z |
1987 | 50.32 | i | 57.29 | k | 57.09 | i | 75.32 | h | 76.17 | g | 89.24 | a | 89.78 | d | 87.32 | c | 84.33 | c | 77.62 | g | 60.90 | j | 53.09 | i | 87.67 | h |
1988 | 52.83 | m | 60.00 | i | 63.91 | h | 70.52 | i | 79.14 | j | 89.41 | c | 91.70 | a | 86.69 | b | 81.90 | i | 81.15 | k | 65.05 | k | 52.10 | k | 89.27 | i |
1989 | 53.06 | m | 56.89 | j | 70.52 | h | 78.65 | j | 79.81 | j | 88.86 | h | 94.70 | k | 89.80 | f | 86.20 | j | 76.33 | j | 65.70 | j | 58.05 | k | ----- | z |
1990 | 50.76 | j | 52.95 | i | 64.48 | j | 69.67 | i | 75.82 | i | 91.57 | b | 88.45 | 87.61 | c | 85.05 | k | 77.00 | i | 63.89 | k | 48.43 | j | 89.21 | i | |
1991 | 51.20 | k | 66.17 | j | 55.80 | k | 70.32 | h | 76.82 | i | 84.95 | j | 92.73 | i | 89.50 | s | 87.28 | l | 77.43 | j | 64.53 | k | 48.57 | j | ----- | z |
1992 | 51.76 | j | 58.41 | l | 61.33 | j | 74.23 | h | 78.26 | l | 86.73 | h | 90.27 | i | 89.95 | j | 86.76 | m | 79.00 | l | 58.61 | l | 49.38 | j | ----- | z |
1993 | 53.86 | j | 52.10 | g | 64.52 | h | 72.29 | i | 81.57 | j | 88.79 | k | 90.58 | l | 88.05 | i | 87.33 | l | 74.00 | k | 63.00 | l | 56.50 | k | ----- | z |
1994 | 58.60 | k | 55.39 | j | 66.61 | h | 72.56 | n | 75.50 | m | 92.61 | l | 89.74 | l | 92.60 | k | 87.27 | h | 72.00 | k | 60.68 | k | 54.95 | l | ----- | z |
1995 | 50.75 | k | 63.83 | j | 63.76 | n | 67.63 | k | 73.77 | i | 86.59 | h | 94.15 | k | 94.43 | h | 87.47 | m | 79.00 | k | 69.44 | l | 62.69 | r | ----- | z |
1996 | 57.24 | n | 60.59 | l | 65.76 | j | 76.00 | h | 84.22 | h | 92.42 | k | 94.18 | i | 93.77 | i | 79.65 | j | 73.91 | i | 68.11 | k | 57.62 | j | ----- | z |
1997 | 50.82 | i | 55.37 | i | 67.60 | p | 68.41 | h | 85.05 | k | 88.40 | j | 92.78 | m | 89.83 | m | 84.60 | j | 74.45 | k | 67.44 | l | 50.41 | n | ----- | z |
1998 | 55.06 | n | 51.76 | k | 62.84 | l | 62.29 | i | 73.79 | l | 78.00 | v | 88.90 | u | ----- | z | 86.12 | m | 74.16 | l | 65.18 | m | 56.84 | l | ----- | z |
1999 | 60.11 | m | 63.06 | k | 67.50 | i | 66.05 | h | 79.53 | n | 86.48 | i | 88.62 | o | 86.79 | l | 83.79 | k | 80.41 | n | 72.35 | m | 58.29 | j | ----- | z |
2000 | 60.33 | m | 63.26 | j | 62.20 | k | 77.44 | l | 83.50 | i | 93.24 | i | 95.00 | l | 90.45 | i | 87.94 | l | 74.29 | n | 52.38 | v | 56.00 | t | ----- | z |
2001 | 52.88 | o | 55.11 | j | 65.09 | i | 70.24 | i | 87.00 | i | 90.29 | m | 92.65 | n | 93.71 | j | 89.18 | m | 78.81 | j | 63.10 | j | 52.21 | l | ----- | z |
2002 | 54.55 | k | 62.47 | i | 64.95 | j | 76.86 | h | 80.36 | i | 93.40 | j | 95.91 | i | 92.77 | i | 85.30 | j | 71.62 | j | 64.44 | l | 52.26 | l | ----- | z |
2003 | 60.38 | j | 55.56 | j | 62.81 | j | 67.67 | i | 81.95 | i | 90.00 | i | 97.91 | i | 90.19 | j | 85.67 | i | 83.05 | j | 59.88 | m | 54.81 | j | ----- | z |
2004 | 52.35 | k | 52.53 | j | 71.57 | h | 71.27 | h | 82.85 | k | 91.10 | i | 93.71 | j | 89.77 | i | 85.00 | i | 73.74 | l | 54.36 | e | 51.93 | b | 53.15 | j |
2005 | 51.53 | a | 51.89 | a | 57.03 | 69.31 | a | 80.55 | 86.67 | 95.47 | a | 88.06 | 85.34 | a | 73.80 | a | 63.69 | a | 55.45 | 71.57 | ||||||
2006 | 55.86 | b | 60.74 | a | 58.31 | b | 71.87 | 84.35 | 93.30 | 91.60 | a | 87.42 | 80.97 | 70.58 | 64.11 | b | 53.37 | a | 72.71 | |||||||
2007 | 49.37 | a | 58.37 | a | 67.43 | a | 72.23 | 82.00 | b | 92.00 | 93.35 | 91.55 | 84.40 | 74.10 | 67.83 | 48.77 | 73.45 | |||||||||
2008 | 48.74 | 55.37 | b | 65.24 | b | 72.17 | a | 77.41 | b | 91.55 | a | 91.83 | a | 90.74 | 85.32 | h | 75.90 | 64.23 | 48.73 | a | 71.09 | a | ||||
2009 | 56.97 | 57.52 | a | 65.81 | 70.14 | a | 84.68 | 85.03 | 93.44 | d | 92.08 | r | ----- | z | 70.84 | 66.07 | a | 46.71 | 69.72 | b | ||||||
2010 | 52.74 | 53.59 | a | 60.94 | 68.11 | b | 75.77 | 89.07 | 92.70 | a | 87.48 | ----- | z | ----- | z | ----- | z | ----- | z | 72.55 | d | |||||
2011 | ----- | z | ----- | z | ----- | z | 69.90 | 75.00 | a | 88.79 | a | 89.07 | a | 92.10 | a | 85.82 | b | 75.14 | b | 59.82 | b | 49.48 | 76.12 | c | ||
2012 | 57.52 | 57.68 | a | 64.42 | 73.07 | a | 83.48 | 93.53 | 91.27 | a | 92.97 | 85.17 | 77.45 | 66.50 | 51.55 | b | 74.55 | |||||||||
2013 | 49.52 | 53.61 | 68.81 | 73.52 | a | 81.00 | 97.43 | 92.13 | 89.19 | 81.97 | 72.39 | 62.57 | 51.74 | 72.82 | ||||||||||||
2014 | 60.81 | 61.96 | 66.61 | 73.00 | 80.68 | 92.30 | 93.77 | 87.84 | 85.63 | 78.42 | 65.00 | 53.23 | 74.94 | |||||||||||||
2015 | 54.48 | 65.75 | 68.35 | 71.63 | 74.39 | 93.50 | 90.29 | 92.00 | 87.43 | 75.32 | 59.77 | 50.17 | a | 73.59 | ||||||||||||
2016 | 51.54 | c | 65.04 | a | 69.13 | 70.90 | 76.58 | 95.80 | 95.19 | 87.84 | 82.67 | 78.45 | 64.63 | 52.45 | 74.18 | |||||||||||
2017 | 48.84 | 60.04 | 70.39 | 72.80 | 79.58 | 96.03 | 94.45 | 91.03 | 84.73 | 80.32 | 70.23 | 60.04 | e | 75.71 | ||||||||||||
2018 | 59.45 | 58.64 | 63.19 | 77.10 | 82.16 | 93.37 | 94.37 | a | 92.03 | 89.43 | 70.48 | 62.60 | 55.50 | e | 74.86 | |||||||||||
2019 | 60.17 | y | 48.11 | 62.74 | 73.23 | 71.87 | 90.23 | 95.71 | 94.50 | k | 83.21 | f | 78.11 | m | ----- | z | ----- | z | 73.65 | f | ||||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 52.65 | 56.78 | 62.34 | 70.18 | 78.58 | 89.39 | 92.58 | 89.66 | 85.56 | 75.29 | 63.40 | 53.66 | 72.75 | |||||||||||||
S.D. | 4.86 | 4.62 | 4.65 | 3.93 | 3.38 | 3.20 | 2.04 | 2.38 | 2.54 | 3.65 | 4.07 | 4.69 | 1.44 | |||||||||||||
SKEW | -0.76 | -0.22 | -0.24 | -0.68 | -0.34 | 0.21 | -0.39 | -0.14 | 0.08 | -0.10 | -0.14 | 0.27 | 0.40 | |||||||||||||
MAX | 61.94 | 65.75 | 73.35 | 77.10 | 84.68 | 97.43 | 96.61 | 93.90 | 91.47 | 84.45 | 72.57 | 64.97 | 75.75 | |||||||||||||
MIN | 36.45 | 43.57 | 51.19 | 59.19 | 71.81 | 81.21 | 86.65 | 83.71 | 80.33 | 66.74 | 54.07 | 41.97 | 70.34 | |||||||||||||
YRS | 52 | 50 | 52 | 54 | 55 | 57 | 59 | 58 | 51 | 52 | 51 | 51 | 37 |