YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1948 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 77.84 | 76.65 | 70.60 | 60.23 | 39.40 | 38.81 | 60.59 | f | ||||||
1949 | 34.55 | 37.43 | 43.84 | 54.43 | 59.61 | 71.13 | 78.00 | 71.74 | 72.67 | 54.26 | 47.60 | 38.35 | 55.30 | |||||||||||||
1950 | 36.16 | 43.50 | 46.16 | 54.53 | 58.26 | 67.77 | 77.77 | 73.77 | 64.97 | 59.00 | 46.73 | 40.52 | 55.76 | |||||||||||||
1951 | 36.94 | 42.46 | 45.13 | 52.47 | 60.48 | 65.47 | 79.71 | 74.74 | 66.67 | 55.74 | 44.90 | 39.81 | 55.38 | |||||||||||||
1952 | 37.52 | 39.14 | 41.58 | 53.40 | 62.42 | 68.77 | 75.58 | 76.84 | 71.43 | 57.13 | 43.33 | 38.52 | 55.47 | |||||||||||||
1953 | 39.00 | 37.50 | 46.84 | 51.73 | 55.00 | 68.10 | 79.23 | 74.13 | 66.07 | 55.03 | 45.93 | 33.45 | 54.33 | |||||||||||||
1954 | 37.42 | 44.21 | 45.68 | 54.57 | 59.77 | 66.03 | 77.52 | b | 74.77 | 69.23 | 55.97 | 45.33 | 39.61 | 55.84 | ||||||||||||
1955 | 37.45 | 36.00 | 44.06 | 48.70 | 59.87 | 65.70 | 72.94 | 74.26 | 66.23 | 58.84 | 42.73 | 39.45 | 53.85 | |||||||||||||
1956 | 41.26 | 35.66 | 42.61 | 50.25 | b | 60.81 | 72.07 | 75.03 | 71.10 | 69.28 | a | 53.13 | 41.69 | a | 36.61 | 54.12 | ||||||||||
1957 | 43.39 | 47.68 | 47.61 | 52.53 | 58.61 | 70.70 | 77.74 | 74.39 | 66.90 | 58.94 | 41.93 | 39.45 | 56.66 | |||||||||||||
1958 | 36.61 | 43.86 | 45.10 | 50.07 | 65.52 | 71.63 | 77.03 | 78.23 | a | 70.00 | 60.52 | 43.80 | 37.55 | 56.66 | ||||||||||||
1959 | 37.35 | 37.57 | 43.97 | 55.23 | 57.32 | 72.87 | 79.77 | 75.16 | 66.20 | 54.65 | 44.90 | 40.23 | 55.44 | |||||||||||||
1960 | 34.45 | 35.41 | 46.23 | 50.13 | 58.00 | 71.77 | 76.87 | 75.48 | 68.07 | 55.10 | 43.30 | 35.00 | 54.15 | |||||||||||||
1961 | 40.61 | 40.89 | 45.74 | 52.10 | 58.23 | 72.23 | 77.84 | 75.10 | 65.80 | 52.77 | 41.83 | 38.16 | 55.11 | |||||||||||||
1962 | 37.94 | 41.29 | 39.13 | 53.90 | 57.00 | 65.20 | 74.71 | 76.19 | 69.97 | 55.23 | 45.90 | 40.58 | 54.75 | |||||||||||||
1963 | 33.13 | 43.93 | 44.06 | 49.57 | 62.48 | 64.17 | 78.48 | 74.10 | 70.67 | c | 60.77 | a | 48.37 | 36.00 | 55.48 | |||||||||||
1964 | 33.35 | 33.69 | 43.48 | 50.93 | 58.58 | 67.07 | 78.40 | a | 74.71 | 68.73 | 59.97 | 41.70 | 39.42 | 54.17 | ||||||||||||
1965 | 41.45 | 40.61 | 42.45 | 51.37 | 56.74 | 62.80 | 78.90 | 75.65 | 65.87 | 56.68 | 49.53 | 42.10 | 55.35 | |||||||||||||
1966 | 35.45 | 36.50 | 44.84 | 51.97 | a | 63.55 | 69.67 | 79.00 | 77.13 | a | 71.53 | 55.35 | 46.47 | 39.00 | 55.87 | |||||||||||
1967 | 35.27 | a | 40.25 | 46.84 | 47.67 | 51.81 | 56.60 | o | 78.03 | a | 76.17 | a | 69.67 | 56.23 | a | 49.55 | a | 36.71 | 53.47 | a | ||||||
1968 | 39.74 | 47.31 | 46.19 | 50.70 | c | 59.39 | 67.30 | 75.29 | 71.39 | 66.23 | 54.35 | 44.70 | 35.39 | 54.83 | ||||||||||||
1969 | 43.74 | 39.46 | 40.10 | 51.17 | 61.23 | 66.97 | 78.65 | 78.45 | b | 69.43 | 52.68 | 47.83 | 40.06 | 55.81 | ||||||||||||
1970 | 36.19 | 44.57 | 44.97 | 45.93 | 60.97 | 69.66 | a | 80.52 | 76.68 | 64.53 | 49.87 | a | 42.83 | 36.68 | 54.45 | |||||||||||
1971 | 33.16 | 37.64 | 42.90 | 48.72 | a | 55.35 | 67.97 | 77.61 | 73.77 | 66.07 | 49.26 | 41.26 | c | 33.93 | b | 52.30 | ||||||||||
1972 | 30.32 | 38.17 | 47.03 | 48.80 | 56.62 | b | 67.40 | 74.68 | 70.57 | a | 63.93 | c | 53.93 | a | 37.00 | e | 31.71 | 51.68 | ||||||||
1973 | 30.00 | 40.88 | c | 40.92 | f | 48.21 | a | 62.06 | 68.62 | d | 75.84 | 75.57 | c | 61.07 | 50.13 | 40.93 | 37.16 | 53.68 | a | |||||||
1974 | 37.43 | a | 36.50 | 46.65 | 49.97 | 59.23 | a | 72.23 | 77.42 | 73.48 | 69.80 | 59.93 | a | 43.27 | 32.71 | 54.89 | ||||||||||
1975 | 34.10 | 37.14 | 42.13 | 46.03 | 57.29 | 66.10 | 77.58 | 75.13 | 71.52 | a | 54.13 | 42.83 | 40.43 | a | 53.70 | |||||||||||
1976 | 36.59 | d | 46.76 | 45.71 | 51.87 | 62.68 | 70.83 | 79.58 | 74.77 | 69.43 | 57.29 | 45.73 | 38.23 | 56.62 | ||||||||||||
1977 | 40.00 | 42.04 | 41.90 | 53.20 | 58.65 | 73.67 | 80.26 | 79.97 | 70.83 | 62.61 | 47.17 | 43.90 | 57.85 | |||||||||||||
1978 | 43.45 | 45.29 | 50.84 | 51.17 | 59.35 | 71.97 | 78.10 | 74.10 | 71.00 | 61.32 | 47.90 | 38.03 | 57.71 | |||||||||||||
1979 | 38.26 | 39.64 | 44.84 | 49.43 | 61.00 | 70.70 | 75.29 | 72.00 | 72.27 | 56.84 | 43.07 | 40.48 | 55.32 | |||||||||||||
1980 | 44.83 | a | 46.10 | 45.03 | 50.97 | 57.74 | 68.97 | 79.90 | 75.94 | 67.90 | 56.90 | 44.53 | 43.03 | 56.82 | ||||||||||||
1981 | 43.97 | a | 42.82 | 45.81 | 56.87 | 61.27 | a | 75.20 | 79.87 | 79.00 | 71.23 | 55.45 | 47.67 | 40.48 | 58.30 | |||||||||||
1982 | 39.74 | 47.00 | 52.18 | n | 52.20 | 59.53 | a | 64.47 | 73.48 | 74.87 | 67.80 | 51.10 | a | 45.90 | 38.13 | 55.84 | a | |||||||||
1983 | 38.17 | a | 41.57 | 44.61 | 45.17 | 55.61 | 62.87 | 72.43 | a | 70.97 | 74.54 | d | 58.81 | 44.33 | 41.55 | 54.22 | ||||||||||
1984 | 38.06 | 37.86 | 44.74 | 50.10 | 61.90 | a | 65.63 | 75.10 | 75.35 | 70.15 | c | 53.35 | 44.13 | 39.39 | 54.65 | |||||||||||
1985 | 38.81 | 38.32 | 44.00 | 54.00 | 61.00 | b | 71.24 | a | 78.48 | 76.52 | 63.63 | 57.77 | 44.40 | 39.16 | 55.61 | |||||||||||
1986 | 43.47 | a | 45.00 | 51.74 | 55.77 | 62.52 | 73.80 | 75.00 | 78.33 | a | 64.83 | 55.32 | 47.73 | 40.61 | 57.84 | |||||||||||
1987 | 37.35 | 43.68 | 45.40 | a | 56.43 | g | 64.45 | 71.97 | 73.10 | 74.19 | 66.66 | a | 60.97 | 45.30 | 37.26 | 56.39 | a | |||||||||
1988 | 39.03 | 44.03 | 45.97 | 53.86 | a | 60.47 | a | 72.13 | 79.81 | 75.58 | 66.50 | 62.35 | 45.33 | 38.55 | 56.97 | |||||||||||
1989 | 38.55 | 42.89 | 48.65 | 57.23 | 62.29 | 70.37 | 78.79 | b | 75.79 | b | 70.17 | a | 59.03 | 46.75 | b | 37.77 | 57.36 | |||||||||
1990 | 37.84 | 39.82 | 49.58 | 57.23 | 62.29 | 73.67 | 79.35 | 73.74 | 70.00 | 57.16 | 47.00 | 36.90 | 57.05 | |||||||||||||
1991 | 39.03 | a | 47.39 | 44.58 | 50.90 | 58.68 | 67.00 | 77.10 | 78.20 | a | 70.47 | 60.23 | 46.17 | 43.68 | 56.95 | |||||||||||
1992 | 41.13 | 45.97 | 47.77 | 54.17 | 64.19 | 68.53 | 75.00 | 75.16 | 68.57 | 57.10 | 41.40 | 39.13 | 56.51 | |||||||||||||
1993 | 45.39 | 44.61 | 46.19 | 51.03 | 61.94 | 67.53 | 71.81 | 73.94 | 65.33 | 56.97 | 42.90 | 36.81 | 55.37 | |||||||||||||
1994 | 35.87 | 39.07 | 47.77 | 52.57 | 59.55 | 71.83 | 76.32 | 79.32 | 68.87 | 54.90 | 41.87 | 41.52 | 55.79 | |||||||||||||
1995 | 41.58 | 46.54 | 46.26 | 49.03 | 58.27 | a | 65.67 | 77.26 | 77.97 | a | 71.67 | 55.03 | 48.93 | 39.68 | 56.49 | |||||||||||
1996 | 37.71 | 46.96 | a | 48.24 | b | 54.38 | a | 62.97 | 72.47 | 80.03 | 78.81 | 67.43 | 57.29 | 47.59 | a | 38.90 | 57.73 | |||||||||
1997 | 42.57 | a | 41.79 | 49.90 | 54.30 | 68.71 | 68.57 | 76.73 | a | 77.94 | 73.77 | 57.40 | a | 48.17 | a | 39.10 | 58.24 | |||||||||
1998 | 41.90 | 43.18 | 46.87 | 50.70 | 62.13 | 70.77 | 81.68 | 81.83 | b | 74.13 | 58.70 | a | 47.77 | 41.16 | 58.40 | |||||||||||
1999 | 41.45 | 44.25 | 49.23 | 52.03 | 64.19 | 75.90 | 78.94 | 79.94 | 73.50 | 61.48 | 51.27 | 41.23 | 59.45 | |||||||||||||
2000 | 43.67 | a | 47.14 | 50.00 | 58.80 | 68.84 | 77.43 | 82.16 | 81.50 | a | 75.90 | 61.10 | a | 42.63 | 41.52 | 60.89 | ||||||||||
2001 | 41.68 | 42.46 | 49.81 | 56.07 | 69.58 | 77.20 | 82.40 | a | 81.03 | 76.67 | 62.74 | 54.67 | 39.70 | a | 61.17 | |||||||||||
2002 | 41.23 | 44.43 | 48.29 | 60.90 | 65.19 | 75.87 | 82.84 | 80.23 | 74.67 | 59.81 | 52.27 | 42.52 | 60.69 | |||||||||||||
2003 | 46.94 | 46.43 | 49.32 | 54.17 | a | 68.32 | 74.37 | 84.19 | 82.61 | 75.17 | 66.39 | 48.40 | 43.23 | 61.63 | ||||||||||||
2004 | 44.97 | 42.41 | 56.06 | 58.67 | 68.00 | 75.20 | 80.48 | 79.00 | a | 73.40 | 60.45 | 48.87 | 42.90 | 60.87 | ||||||||||||
2005 | 45.90 | 47.71 | 48.42 | 54.70 | 66.23 | 73.67 | 82.10 | 78.45 | ----- | z | 62.21 | b | 50.23 | 41.13 | 59.16 | a | ||||||||||
2006 | 42.19 | 46.56 | j | 52.86 | q | 56.40 | 67.87 | 77.64 | b | 83.58 | 78.17 | a | 69.46 | b | 58.00 | 50.60 | 39.13 | 62.30 | b | |||||||
2007 | 39.13 | 43.57 | 51.45 | 53.33 | 64.79 | g | 66.41 | c | ----- | z | ----- | z | 69.00 | o | 62.00 | 54.23 | 39.52 | 51.21 | d | |||||||
2008 | 41.10 | 42.93 | 48.61 | 55.97 | a | 60.43 | a | 80.86 | b | 82.04 | g | 79.23 | 73.82 | b | 61.10 | b | 52.20 | 42.26 | d | 58.05 | a | |||||
2009 | 44.77 | a | 45.18 | 51.35 | e | 54.07 | 70.60 | a | 73.76 | a | 83.68 | 79.58 | 74.57 | 57.84 | 51.43 | 40.45 | 60.61 | |||||||||
2010 | 44.45 | 45.43 | 46.97 | a | 53.80 | 61.48 | 71.89 | c | 83.65 | 80.52 | 74.03 | 62.40 | a | 47.47 | 44.97 | 59.75 | ||||||||||
2011 | 39.39 | 40.26 | a | 51.23 | 59.10 | 62.61 | 70.34 | a | 79.86 | b | 83.84 | 75.13 | 62.03 | 49.30 | 40.19 | 59.44 | ||||||||||
2012 | 42.94 | 44.31 | 48.45 | 58.73 | 67.26 | 78.07 | 80.77 | a | 82.71 | 75.23 | 61.77 | 51.27 | 42.23 | 61.14 | ||||||||||||
2013 | 39.71 | 42.89 | a | 51.48 | 58.43 | 67.48 | 77.47 | 82.74 | 80.97 | 73.53 | 57.55 | 52.30 | 41.83 | a | 60.53 | |||||||||||
2014 | 42.42 | 47.43 | 52.71 | 57.50 | 66.19 | 75.68 | b | 83.29 | j | 74.15 | e | 75.89 | b | 62.56 | f | 49.23 | 43.97 | a | 58.52 | b | ||||||
2015 | 44.53 | a | 49.43 | 55.65 | 56.32 | b | 63.00 | c | 79.07 | 81.50 | c | 83.63 | a | 76.67 | 64.93 | a | 46.57 | 39.54 | c | 61.74 | ||||||
2016 | 41.57 | a | 47.17 | 53.10 | 58.03 | 63.43 | a | 79.33 | 84.10 | 80.10 | 73.57 | 64.90 | 54.07 | 45.06 | 62.04 | |||||||||||
2017 | 43.64 | c | 47.48 | c | 52.73 | a | 57.87 | 66.13 | 77.60 | 82.29 | c | 79.32 | l | 76.06 | m | 60.38 | j | 62.83 | g | 42.60 | a | 58.79 | d | |||
2018 | 46.10 | a | 43.85 | b | 51.82 | i | 59.23 | h | 67.38 | j | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 44.97 | j |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 39.64 | 42.50 | 46.92 | 53.03 | 61.62 | 70.98 | 78.47 | 76.70 | 70.02 | 57.80 | 46.29 | 39.50 | 56.83 | |||||||||||||
S.D. | 3.83 | 3.77 | 3.48 | 3.48 | 3.92 | 4.32 | 2.99 | 3.17 | 3.65 | 3.70 | 3.71 | 2.75 | 2.52 | |||||||||||||
SKEW | -0.28 | -0.35 | 0.39 | 0.03 | 0.25 | 0.21 | -0.06 | 0.28 | -0.07 | -0.09 | 0.16 | -0.45 | 0.47 | |||||||||||||
MAX | 46.94 | 49.43 | 56.06 | 60.90 | 70.60 | 80.86 | 84.19 | 83.84 | 76.67 | 66.39 | 54.67 | 45.06 | 62.04 | |||||||||||||
MIN | 30.00 | 33.69 | 39.13 | 45.17 | 51.81 | 62.80 | 71.81 | 70.57 | 61.07 | 49.26 | 37.00 | 31.71 | 51.68 | |||||||||||||
YRS | 70 | 69 | 66 | 68 | 68 | 68 | 67 | 68 | 67 | 68 | 69 | 70 | 59 |