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 | 51.23 | 57.56 | 65.95 | 76.02 | 70.95 | a | 65.68 | 54.80 | a | 46.15 | 39.47 | 58.65 | c | |||||||
1943 | 38.50 | 42.80 | 47.50 | 53.70 | 61.48 | 67.52 | 74.45 | 73.65 | e | 68.02 | a | 55.68 | 43.65 | 37.92 | 55.41 | |||||||||||
1944 | 35.53 | 37.60 | 41.92 | 47.58 | 57.25 | a | 63.35 | 71.16 | 72.37 | 65.89 | b | 56.07 | b | 42.91 | a | 38.24 | 52.49 | |||||||||
1945 | 34.27 | 41.71 | 40.58 | 49.12 | 58.35 | a | 65.13 | 74.92 | 73.65 | 67.65 | 58.08 | 43.74 | a | 31.79 | 53.25 | |||||||||||
1946 | 36.93 | a | 38.59 | 45.23 | a | 55.31 | a | 58.81 | 69.43 | 74.60 | 72.21 | 66.80 | 52.13 | a | 42.10 | 40.30 | a | 54.37 | ||||||||
1947 | 34.32 | 43.45 | 46.32 | 51.70 | 63.19 | b | 68.10 | 75.53 | 72.67 | a | 69.58 | 56.94 | 39.95 | 36.33 | a | 54.84 | ||||||||||
1948 | 38.23 | 37.16 | a | ----- | z | 52.33 | 59.45 | a | 67.12 | 73.45 | 72.84 | 66.60 | 56.31 | 40.87 | 37.24 | 54.69 | a | |||||||||
1949 | 25.73 | 28.86 | 43.76 | 54.57 | a | 59.05 | 68.90 | 76.24 | 72.42 | 69.90 | 53.23 | 50.07 | 35.23 | 53.16 | ||||||||||||
1950 | 35.65 | 43.00 | 46.61 | 55.00 | 58.26 | 68.10 | 73.76 | 72.48 | 64.27 | 61.69 | 47.75 | 42.73 | 55.77 | |||||||||||||
1951 | 35.92 | 40.50 | 44.40 | 51.72 | 59.65 | 66.59 | a | 77.52 | 71.94 | 68.22 | 54.94 | 43.35 | 36.63 | 54.28 | ||||||||||||
1952 | 36.94 | 37.81 | 39.05 | 51.52 | 60.15 | 65.20 | 72.45 | 73.63 | 67.62 | ----- | z | 39.98 | 36.56 | 52.81 | a | |||||||||||
1953 | 41.65 | 37.84 | 44.35 | 50.53 | 53.85 | 67.00 | 76.18 | a | 71.97 | 66.55 | 54.10 | 43.34 | a | 34.81 | 53.51 | |||||||||||
1954 | 36.77 | 44.36 | 43.05 | 54.67 | 61.81 | 67.20 | 75.44 | 71.14 | c | 67.75 | 57.34 | b | 48.35 | 36.92 | 55.40 | |||||||||||
1955 | 33.28 | b | 34.21 | 44.35 | 48.75 | b | 57.03 | 68.23 | 72.18 | 72.61 | 66.13 | 59.37 | 45.20 | 41.77 | 53.59 | |||||||||||
1956 | 40.90 | a | 35.17 | 45.22 | a | 51.11 | g | 60.21 | c | 69.80 | g | 73.73 | 70.30 | a | 69.43 | 55.31 | 42.86 | a | 36.87 | 53.00 | b | |||||
1957 | 38.72 | a | 45.84 | 46.79 | 50.43 | a | 54.68 | 69.27 | 74.91 | b | 72.48 | 66.73 | d | 54.22 | a | 41.80 | ----- | z | 55.99 | a | ||||||
1958 | 36.58 | 42.70 | 39.94 | 44.78 | c | 61.45 | 67.53 | n | 74.36 | i | 76.61 | 67.74 | e | 56.73 | c | 43.73 | 42.27 | 51.25 | b | |||||||
1959 | 37.98 | c | 37.11 | a | 44.92 | 54.28 | 57.37 | d | 70.28 | 77.15 | 71.00 | 63.43 | 56.16 | 44.32 | 38.74 | 54.40 | ||||||||||
1960 | 29.00 | a | 36.00 | 47.60 | 52.02 | b | 58.31 | e | 72.05 | b | 75.10 | a | 74.30 | a | 68.38 | 54.79 | b | 44.85 | 36.10 | 54.04 | ||||||
1961 | 38.47 | 41.80 | 43.79 | 52.32 | 58.12 | b | 70.20 | 75.98 | 72.76 | ----- | z | 55.98 | 42.96 | f | 34.35 | 54.38 | b | |||||||||
1962 | 36.08 | 41.11 | a | 40.26 | 56.35 | 56.62 | a | 62.95 | b | 74.24 | 75.26 | 68.25 | 56.52 | b | 48.25 | b | 40.74 | 54.72 | ||||||||
1963 | 34.50 | 47.38 | h | 43.21 | 48.05 | 62.48 | 66.62 | 78.69 | 71.97 | a | 68.18 | 59.75 | a | 46.28 | a | 37.79 | 56.14 | a | ||||||||
1964 | 33.81 | 35.98 | 42.27 | 50.62 | 60.71 | 68.92 | 76.94 | 71.53 | 66.33 | a | 60.77 | 40.85 | 38.76 | 53.96 | ||||||||||||
1965 | 41.15 | 40.41 | 43.32 | 50.24 | a | 57.29 | 65.50 | j | 75.45 | 72.95 | k | 64.13 | 58.73 | 48.75 | 38.44 | 51.79 | b | |||||||||
1966 | 36.06 | 36.30 | 47.37 | 54.83 | 62.89 | 69.50 | 75.60 | 74.92 | a | 68.18 | 56.10 | 48.25 | 38.24 | 55.69 | ||||||||||||
1967 | 38.00 | 42.88 | 47.82 | 47.27 | 58.87 | 65.20 | 75.42 | 73.29 | 67.78 | 58.11 | 49.27 | 28.29 | 54.35 | |||||||||||||
1968 | 28.08 | ----- | z | 46.26 | 48.98 | ----- | z | 69.65 | 73.98 | 68.58 | 66.45 | 57.52 | 46.43 | 34.92 | 54.09 | b | ||||||||||
1969 | 42.26 | 40.21 | 41.55 | 52.90 | 63.18 | 67.82 | 75.69 | 76.50 | 68.90 | 53.32 | 45.48 | a | 40.17 | b | 55.67 | |||||||||||
1970 | 38.35 | 45.86 | q | ----- | z | 45.36 | w | 60.69 | 70.08 | 77.13 | a | 74.47 | 63.69 | d | 53.73 | 46.32 | 35.55 | 57.78 | c | |||||||
1971 | 36.44 | 39.29 | 44.27 | 49.83 | 55.61 | 67.50 | 77.44 | 72.82 | 66.88 | 51.10 | 43.10 | 33.00 | 53.11 | |||||||||||||
1972 | 36.42 | 41.28 | 52.42 | 53.17 | 59.58 | 68.75 | 77.34 | 73.21 | 66.47 | 55.23 | 39.88 | 33.89 | 54.80 | |||||||||||||
1973 | 33.58 | 39.46 | 39.68 | 48.10 | a | 60.37 | 68.75 | 74.21 | 72.73 | 65.77 | 56.81 | 44.92 | 40.58 | 53.75 | ||||||||||||
1974 | 36.35 | a | 37.65 | a | 47.60 | 51.27 | 62.19 | 73.67 | 72.95 | 70.60 | 67.57 | a | 57.26 | 45.08 | 36.02 | a | 54.85 | |||||||||
1975 | 37.42 | a | 38.38 | 43.16 | 45.71 | b | 57.45 | 67.07 | 75.48 | 72.94 | 67.80 | 57.13 | 44.53 | 38.97 | 53.84 | |||||||||||
1976 | 38.82 | 44.17 | 44.37 | 50.68 | 62.61 | 68.17 | 75.63 | 72.42 | 66.07 | 54.57 | a | 46.98 | 37.73 | 55.18 | ||||||||||||
1977 | 37.52 | a | 42.75 | 41.84 | 52.72 | e | 56.15 | 70.70 | 76.19 | 75.23 | 68.29 | a | 59.19 | 48.83 | 44.84 | b | 56.19 | |||||||||
1978 | 40.74 | 42.41 | 49.07 | a | 51.63 | 58.98 | 70.57 | 74.94 | 74.15 | 66.40 | 60.92 | 45.58 | 34.48 | 55.82 | ||||||||||||
1979 | 33.02 | 38.19 | a | 45.02 | a | 51.18 | 58.82 | 68.05 | 75.71 | c | 70.67 | b | 69.86 | h | 59.45 | 41.60 | f | 40.93 | i | 55.57 | c | |||||
1980 | 40.19 | b | 43.41 | 43.69 | 50.25 | b | 54.88 | a | 68.72 | 76.26 | 74.21 | 68.20 | 57.11 | 46.77 | d | 43.69 | b | 55.62 | ||||||||
1981 | 42.52 | a | 42.41 | f | 45.08 | a | 56.67 | a | 61.31 | 74.65 | 77.34 | 75.58 | 68.95 | a | 55.00 | f | 49.75 | h | 40.93 | j | 62.76 | d | ||||
1982 | 36.56 | o | 41.07 | m | 44.75 | k | 51.29 | i | 59.62 | f | 67.08 | f | 73.96 | h | 74.54 | g | 66.41 | g | 53.25 | k | 48.06 | m | 36.18 | n | ----- | z |
1983 | 38.62 | k | 43.17 | h | 43.56 | d | 46.48 | b | 56.58 | g | 66.96 | g | 76.03 | k | 72.45 | i | 69.66 | h | 57.02 | k | 45.11 | p | 39.79 | q | 45.02 | j |
1984 | 38.92 | m | 39.42 | j | 45.76 | j | 51.76 | i | 66.11 | h | 69.28 | 76.40 | e | 75.41 | c | 68.64 | i | 50.90 | j | 43.94 | n | 37.47 | o | 73.70 | i | |
1985 | 36.18 | l | 38.47 | k | 44.63 | l | 55.60 | i | 62.67 | d | 71.32 | b | 77.24 | 74.48 | a | 64.17 | f | 56.38 | k | 42.36 | l | 39.60 | j | 71.43 | h | |
1986 | 42.47 | p | 45.38 | l | 48.42 | k | 53.98 | h | 60.69 | j | 70.97 | j | 72.53 | k | 73.95 | l | 62.83 | l | 54.16 | l | 46.21 | m | 38.39 | m | ----- | z |
1987 | 33.97 | n | 40.69 | o | 40.63 | l | 55.73 | h | 60.04 | g | 70.45 | a | 72.13 | e | 72.88 | c | 67.24 | e | 60.50 | h | 45.24 | k | 37.09 | o | 70.67 | h |
1988 | 38.17 | s | 42.67 | k | 45.02 | i | 55.19 | l | 60.80 | k | 72.39 | c | 75.71 | b | 72.48 | d | 63.79 | i | 61.68 | n | 48.13 | o | 36.00 | r | 73.53 | i |
1989 | 37.08 | r | 41.18 | n | 51.50 | i | 59.25 | j | 62.17 | j | 70.98 | h | 77.90 | k | 73.66 | f | 67.95 | j | 58.21 | j | 46.02 | j | 39.24 | n | ----- | z |
1990 | 35.89 | m | 39.06 | k | 46.40 | j | 53.83 | j | 59.45 | i | 71.98 | b | 74.66 | 71.89 | c | 68.67 | l | 57.45 | i | 44.75 | l | 31.06 | m | 72.85 | i | |
1991 | 37.21 | n | 45.75 | l | 40.78 | m | 51.16 | h | 59.27 | i | 66.64 | l | 76.07 | i | 74.08 | s | 69.22 | l | 59.14 | j | 47.00 | k | 36.68 | l | ----- | z |
1992 | 36.31 | j | 43.53 | l | 46.90 | j | 56.55 | h | 62.03 | l | 68.30 | h | 73.58 | m | 74.72 | k | 67.97 | m | 59.86 | m | 42.39 | l | 36.22 | m | ----- | z |
1993 | 41.43 | j | 40.23 | h | 48.22 | h | 53.93 | i | 63.98 | j | 68.17 | l | 72.37 | l | 73.02 | j | 68.11 | l | 58.50 | l | 45.14 | l | 38.08 | k | ----- | z |
1994 | 39.63 | l | 39.24 | k | 49.46 | h | 54.56 | n | 59.17 | m | 73.22 | n | 73.60 | p | 77.81 | m | 70.10 | j | 54.90 | k | 42.97 | k | 39.71 | l | ----- | z |
1995 | 39.52 | k | 47.53 | j | 47.41 | n | 51.32 | m | 57.95 | i | 68.52 | h | 76.10 | k | 78.39 | h | 71.18 | m | 58.62 | k | 51.03 | l | 44.69 | r | ----- | z |
1996 | 38.74 | n | 43.97 | l | 48.83 | j | 56.48 | h | 65.84 | i | 73.61 | k | 78.31 | j | 76.93 | i | 67.43 | p | 54.52 | k | 49.32 | k | 40.62 | k | ----- | z |
1997 | 39.07 | i | 39.26 | i | 47.82 | q | 52.43 | i | 66.17 | k | 70.47 | j | 74.68 | q | 76.07 | p | 71.13 | k | 56.34 | l | 50.50 | m | 35.62 | n | ----- | z |
1998 | 40.24 | n | 40.06 | k | 47.29 | l | 46.98 | i | 56.82 | n | 62.38 | v | 73.14 | x | ----- | z | 69.62 | m | 56.34 | l | 46.26 | m | 39.58 | l | ----- | z |
1999 | 41.75 | m | 44.29 | k | 49.43 | j | 50.30 | h | 61.79 | n | 70.77 | q | 73.81 | r | 72.62 | s | 67.79 | m | 59.59 | n | 50.97 | m | 39.86 | j | ----- | z |
2000 | 41.89 | m | 45.72 | k | 47.12 | k | 59.08 | l | 63.91 | n | 74.10 | i | 78.00 | o | 76.19 | j | 69.64 | l | 59.67 | p | ----- | z | 38.00 | t | ----- | z |
2001 | 38.22 | o | 39.69 | j | 49.59 | i | 53.17 | i | 67.45 | i | 72.00 | m | 76.09 | n | 76.62 | j | 70.44 | m | 60.17 | j | 47.38 | j | 37.47 | l | ----- | z |
2002 | 37.83 | k | 41.12 | k | 45.05 | j | 58.55 | h | 61.95 | i | 73.80 | j | 79.93 | i | 76.77 | i | 69.68 | k | 55.86 | j | 46.53 | l | 37.75 | m | ----- | z |
2003 | 44.33 | k | 41.64 | j | 47.92 | k | 51.29 | i | 64.30 | i | 72.17 | i | 80.89 | i | 76.36 | j | 70.35 | j | 64.88 | k | 45.25 | n | 38.20 | k | ----- | z |
2004 | 38.00 | k | 38.42 | j | 54.26 | h | 56.02 | h | 65.10 | k | 71.97 | j | 76.40 | j | 74.02 | i | 68.00 | i | 58.06 | n | 42.36 | e | 39.26 | d | 40.81 | j |
2005 | 41.68 | f | 42.30 | c | 45.15 | d | 52.90 | a | 63.69 | 69.65 | 78.58 | a | 74.05 | 68.27 | b | 58.39 | c | 45.92 | d | 38.18 | f | 59.89 | b | |||
2006 | 38.48 | j | 41.98 | e | 44.85 | h | 55.94 | c | 68.33 | b | 77.91 | b | 79.16 | b | 74.53 | a | 66.22 | c | 55.43 | d | 46.91 | c | 37.08 | f | 62.93 | c |
2007 | 35.37 | d | 43.00 | c | 50.64 | b | 56.05 | 64.90 | b | 73.28 | 78.74 | 76.85 | 69.77 | b | 56.92 | a | 51.41 | a | 35.65 | e | 57.72 | |||||
2008 | 36.41 | d | 41.54 | d | 49.18 | f | 56.46 | b | 61.50 | e | 73.14 | b | 77.47 | b | 77.02 | 69.61 | k | 58.40 | b | 49.00 | b | 37.26 | b | 56.82 | b | |
2009 | 41.81 | b | 42.07 | a | 48.12 | c | 53.85 | c | 67.50 | a | 69.05 | a | 78.80 | f | 75.75 | s | ----- | z | 55.15 | 47.87 | c | 34.67 | b | 51.12 | c | |
2010 | 39.10 | 41.18 | c | 46.33 | b | 52.09 | c | 59.52 | 71.67 | 78.45 | a | 74.37 | ----- | z | ----- | z | ----- | z | ----- | z | 57.84 | d | ||||
2011 | ----- | z | ----- | z | ----- | z | 55.72 | 59.12 | a | 71.02 | a | 76.45 | a | 76.98 | a | 69.79 | b | 56.86 | b | 44.20 | b | 36.02 | 60.68 | c | ||
2012 | 39.76 | 40.57 | a | 46.65 | 55.91 | a | 64.37 | 72.98 | 74.85 | a | 75.77 | a | 68.02 | b | 58.45 | a | 48.20 | 38.29 | b | 56.99 | ||||||
2013 | 34.55 | 38.38 | 51.00 | 54.15 | c | 60.13 | a | 74.65 | 77.39 | 75.35 | 67.32 | 54.16 | 47.12 | 37.23 | 55.95 | |||||||||||
2014 | 42.35 | 45.12 | 50.39 | 55.28 | 63.50 | 72.83 | 78.21 | 73.13 | 70.38 | 60.40 | 47.30 | 41.26 | 58.35 | |||||||||||||
2015 | 40.15 | 48.36 | 51.61 | 54.42 | 58.92 | 75.15 | 75.61 | 76.90 | 71.70 | 61.16 | 43.83 | 35.72 | a | 57.79 | ||||||||||||
2016 | 37.34 | c | 45.86 | a | 51.02 | 55.13 | 60.68 | 77.53 | 79.44 | 73.77 | 67.47 | 61.85 | 48.60 | 39.13 | 58.15 | |||||||||||
2017 | 38.50 | 45.98 | 52.66 | 55.83 | 62.15 | 76.15 | 79.11 | 75.13 | 67.75 | 60.53 | 52.82 | 41.60 | e | 59.02 | ||||||||||||
2018 | 42.79 | 42.62 | 48.23 | 59.85 | 64.85 | 75.03 | 79.38 | a | 76.60 | 71.83 | 57.23 | 45.48 | 40.60 | e | 58.71 | |||||||||||
2019 | 44.25 | y | 35.80 | 47.95 | 56.98 | 56.76 | 71.75 | 78.47 | 77.47 | k | 68.33 | f | 58.83 | m | ----- | z | ----- | z | 57.95 | f | ||||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 37.10 | 40.51 | 45.54 | 52.39 | 60.10 | 69.90 | 75.95 | 73.52 | 67.53 | 56.90 | 45.52 | 37.69 | 55.28 | |||||||||||||
S.D. | 3.56 | 3.62 | 3.38 | 3.21 | 3.05 | 3.29 | 1.94 | 1.91 | 1.77 | 2.49 | 2.97 | 3.13 | 1.72 | |||||||||||||
SKEW | -0.88 | -0.55 | 0.23 | -0.26 | 0.37 | 0.36 | -0.19 | 0.04 | 0.02 | 0.07 | 0.05 | -0.20 | 0.64 | |||||||||||||
MAX | 42.79 | 48.36 | 52.66 | 59.85 | 68.33 | 77.91 | 79.44 | 77.02 | 71.83 | 61.85 | 52.82 | 44.84 | 59.02 | |||||||||||||
MIN | 25.73 | 28.86 | 39.05 | 44.78 | 53.85 | 62.95 | 71.16 | 68.58 | 63.43 | 51.10 | 39.88 | 28.29 | 52.49 | |||||||||||||
YRS | 50 | 49 | 50 | 54 | 55 | 57 | 58 | 57 | 50 | 51 | 51 | 49 | 35 |