YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1957 | ----- | z | ----- | z | 47.75 | u | 55.39 | c | 65.02 | 71.28 | 73.11 | 71.85 | 68.33 | 51.67 | b | 40.75 | 41.61 | 59.89 | c | |||||||
1958 | 37.82 | 46.04 | 44.10 | 52.12 | 67.26 | 73.65 | 79.58 | 79.87 | 65.53 | 54.53 | 42.10 | 36.40 | a | 56.58 | ||||||||||||
1959 | 34.50 | 37.73 | 47.15 | 53.60 | 57.32 | 69.08 | 76.63 | 71.68 | 62.92 | 53.55 | 37.40 | 33.27 | 52.90 | |||||||||||||
1960 | 23.89 | 38.71 | 45.23 | 53.88 | 59.06 | 69.75 | 81.37 | 72.40 | 66.55 | 56.13 | 43.80 | 31.03 | 53.48 | |||||||||||||
1961 | 35.92 | 46.00 | b | 47.82 | 53.12 | b | 60.68 | 74.73 | 79.26 | 79.42 | 62.31 | a | 52.18 | 35.63 | 35.56 | 55.22 | ||||||||||
1962 | 31.35 | a | 38.04 | 42.73 | a | 56.62 | a | 57.68 | 67.78 | 75.18 | 72.94 | 66.83 | 54.33 | a | 45.31 | a | 38.66 | 53.95 | ||||||||
1963 | 27.87 | 38.29 | 46.76 | 51.33 | 60.94 | 68.33 | 72.50 | 75.32 | 70.85 | 57.90 | 45.90 | 32.82 | 54.07 | |||||||||||||
1964 | 39.34 | 39.92 | c | 44.00 | 51.43 | 59.23 | 67.18 | 75.45 | 70.52 | 63.75 | 53.13 | 41.25 | 31.29 | 53.04 | ||||||||||||
1965 | 35.87 | 42.11 | 42.61 | 56.20 | 60.20 | a | 67.25 | 74.95 | a | 74.45 | 62.58 | 58.13 | 46.30 | 35.74 | 54.70 | |||||||||||
1966 | 37.31 | 39.71 | 46.85 | 54.28 | 63.19 | 66.92 | 73.08 | 74.74 | 69.52 | 55.31 | 45.57 | a | 40.81 | 55.61 | ||||||||||||
1967 | 43.37 | 44.43 | 45.84 | 49.68 | 60.56 | 70.12 | 77.69 | 79.81 | 72.23 | 56.53 | 42.57 | 35.98 | a | 56.57 | ||||||||||||
1968 | 37.70 | a | 42.55 | 49.34 | 51.14 | a | 61.50 | 68.95 | 78.02 | 72.50 | 66.57 | 52.71 | 43.09 | a | 33.69 | 54.81 | ||||||||||
1969 | 23.00 | 33.91 | 45.18 | 52.83 | 62.89 | 71.73 | 73.35 | 71.60 | 65.90 | 51.34 | 43.93 | 36.48 | 52.68 | |||||||||||||
1970 | 33.79 | 41.86 | 45.13 | 49.30 | 60.34 | 70.58 | 76.39 | 74.05 | 61.35 | 51.92 | 41.98 | 36.05 | 53.56 | |||||||||||||
1971 | 39.19 | 40.89 | 42.63 | 51.43 | 60.95 | 63.57 | 74.71 | 79.00 | 60.95 | 52.48 | 43.60 | 36.59 | b | 53.83 | ||||||||||||
1972 | 34.60 | a | 37.09 | a | 48.48 | 48.68 | 61.26 | 67.37 | 73.48 | ----- | z | 62.78 | a | 53.32 | 42.15 | 29.68 | 50.81 | a | ||||||||
1973 | 30.98 | 38.34 | 47.71 | 52.72 | 61.23 | 67.50 | 74.65 | 73.56 | 64.65 | 54.27 | 42.00 | 40.56 | 54.01 | |||||||||||||
1974 | 29.40 | 43.62 | 46.28 | b | 52.28 | 57.76 | 69.00 | 72.13 | 73.34 | 66.67 | 53.42 | a | 45.52 | 41.13 | 54.21 | |||||||||||
1975 | 35.94 | 36.07 | 43.53 | 48.03 | 58.69 | 64.67 | 76.72 | b | 70.48 | a | 65.16 | b | 54.56 | 42.53 | a | 37.60 | 52.83 | |||||||||
1976 | 37.48 | a | 39.50 | a | 43.26 | 50.69 | a | 60.15 | 63.52 | 72.50 | 69.84 | b | 67.23 | 53.23 | 41.68 | 33.73 | 52.73 | |||||||||
1977 | 27.31 | 41.54 | 45.13 | 57.13 | 56.40 | 69.97 | a | 71.82 | 76.13 | 61.38 | 51.74 | 40.80 | 37.35 | 53.06 | ||||||||||||
1978 | 32.44 | 39.58 | b | 46.20 | c | 51.23 | b | 57.21 | 67.10 | 72.03 | 71.12 | b | 62.55 | a | 52.34 | 35.20 | 31.98 | 51.58 | ||||||||
1979 | 18.56 | d | 36.36 | 45.61 | 52.02 | a | ----- | z | 67.42 | ----- | z | 73.63 | 66.65 | 57.40 | 38.36 | b | 39.32 | a | 49.53 | b | ||||||
1980 | ----- | z | ----- | z | 44.32 | 54.52 | 59.58 | 63.34 | a | 73.17 | a | 70.26 | 65.74 | a | 52.65 | a | 44.38 | 38.90 | 56.69 | b | ||||||
1981 | 38.52 | 40.33 | a | 47.55 | 52.55 | 59.22 | a | 63.33 | a | 71.65 | 75.53 | 64.79 | b | 51.69 | b | 44.22 | 36.26 | 53.80 | ||||||||
1982 | 31.13 | e | 38.42 | b | 44.75 | c | 48.76 | a | 59.17 | b | 68.15 | 72.85 | 73.67 | a | 64.32 | 52.48 | 39.93 | c | 35.41 | b | 52.42 | |||||
1983 | 40.03 | a | 42.98 | 49.21 | b | 52.32 | 62.21 | c | 65.91 | a | 70.32 | a | 74.66 | 61.62 | b | 52.82 | 47.08 | 25.12 | b | 53.69 | ||||||
1984 | 34.29 | 40.45 | 47.98 | b | 51.63 | ----- | z | 64.31 | a | 73.52 | 73.63 | 62.16 | a | 50.72 | a | 41.38 | 28.55 | 51.69 | a | |||||||
1985 | 27.55 | 32.58 | b | 44.52 | a | 54.97 | a | 62.18 | a | 68.26 | a | 78.55 | ----- | z | 59.98 | 52.50 | ----- | z | 22.55 | a | 50.36 | b | ||||
1986 | 34.52 | a | 39.30 | 49.42 | 51.45 | a | 60.23 | 70.97 | 69.39 | 76.78 | o | 57.35 | q | 54.82 | 44.97 | a | 33.81 | 50.89 | b | |||||||
1987 | 31.42 | a | 40.30 | a | 47.77 | a | 57.15 | 64.31 | 69.52 | 73.12 | a | 73.02 | 68.77 | 54.08 | 45.22 | 34.68 | 54.94 | |||||||||
1988 | 33.40 | 40.43 | 46.66 | 54.18 | 60.13 | a | 66.77 | 73.56 | 72.58 | 64.07 | b | 58.68 | 47.17 | 34.10 | 54.31 | |||||||||||
1989 | 38.63 | a | 27.00 | 43.84 | b | 54.95 | b | 59.63 | a | 69.31 | a | 73.08 | a | 71.17 | a | 65.00 | f | 53.82 | 46.07 | 35.23 | 52.07 | a | ||||
1990 | 40.46 | c | 37.65 | b | 46.89 | l | 56.33 | c | 59.21 | 66.82 | b | 76.15 | 74.58 | 70.25 | 52.81 | 47.29 | a | 27.21 | 55.34 | a | ||||||
1991 | 30.67 | b | 44.39 | 43.90 | 52.80 | 58.19 | 63.42 | 74.48 | 76.31 | ----- | z | 54.07 | a | 43.03 | a | 39.11 | 52.76 | a | ||||||||
1992 | 39.44 | 43.10 | ----- | z | 56.00 | a | 63.36 | b | 72.72 | 73.05 | a | 74.28 | a | 62.97 | 54.77 | 42.29 | a | 34.02 | a | 56.00 | a | |||||
1993 | 23.61 | c | 30.74 | a | 43.35 | n | 53.18 | 64.55 | ----- | z | 68.88 | a | 70.89 | 65.78 | 55.93 | a | 37.20 | 37.60 | 50.84 | b | ||||||
1994 | 40.19 | 36.62 | 48.12 | a | 56.45 | a | ----- | z | 67.13 | 77.40 | 76.67 | b | 68.64 | a | 53.95 | 41.92 | 37.35 | 54.95 | a | |||||||
1995 | 33.69 | d | 43.17 | a | 45.32 | a | 52.25 | 61.05 | a | 65.33 | 73.71 | 69.82 | 67.15 | 51.91 | b | 46.55 | 35.88 | a | 53.82 | |||||||
1996 | 34.95 | a | 36.62 | c | 44.92 | 53.92 | 57.26 | 65.95 | 75.06 | 71.95 | a | 63.23 | 53.90 | a | 41.69 | a | 32.37 | 52.65 | ||||||||
1997 | 34.55 | 39.93 | 47.40 | 51.22 | 62.03 | 65.91 | b | 72.85 | a | 75.10 | 65.71 | a | 53.58 | 43.67 | 37.71 | 54.14 | ||||||||||
1998 | 37.19 | 43.00 | a | 47.92 | a | 52.53 | 60.48 | 67.62 | 78.84 | 74.74 | 70.15 | 52.67 | a | 47.55 | b | 36.18 | 55.74 | |||||||||
1999 | 41.19 | 43.21 | 46.16 | 50.35 | 56.72 | a | 65.97 | 70.43 | a | 72.45 | 63.55 | 52.28 | a | 47.53 | a | 40.97 | a | 54.24 | ||||||||
2000 | 37.47 | 39.55 | a | 46.25 | a | 55.62 | a | 60.53 | 65.16 | b | 73.02 | a | 73.69 | b | 63.36 | a | 52.40 | 37.20 | 32.94 | 53.10 | ||||||
2001 | 34.05 | a | 36.91 | 46.84 | 51.42 | 61.35 | a | 64.80 | 74.19 | b | 75.17 | a | 66.97 | a | 52.93 | b | 44.70 | b | 39.43 | d | 54.06 | |||||
2002 | 39.19 | d | 39.07 | a | 43.03 | a | 52.61 | b | 57.11 | c | 68.02 | a | 75.44 | 71.06 | 64.38 | 51.21 | 42.45 | 40.60 | 53.68 | |||||||
2003 | 40.40 | b | 40.22 | a | 50.37 | a | 53.20 | 59.92 | 69.45 | 77.15 | a | 75.13 | 67.57 | 58.12 | a | 39.60 | 37.15 | a | 55.69 | |||||||
2004 | 30.02 | a | 38.04 | b | 50.00 | d | 55.30 | 61.19 | 68.40 | 76.73 | 75.62 | a | 64.53 | a | 55.81 | b | 42.84 | a | 38.58 | 54.76 | ||||||
2005 | 33.10 | 37.54 | d | 49.58 | ----- | z | 63.00 | b | 66.32 | 75.19 | 74.83 | b | 63.98 | 55.98 | d | 42.35 | 29.98 | d | 53.80 | a | ||||||
2006 | 43.00 | j | 36.84 | 45.62 | a | 53.07 | 60.82 | 68.30 | 77.57 | a | 73.13 | 65.52 | 53.58 | 43.81 | a | 33.00 | a | 55.57 | a | |||||||
2007 | 31.84 | 39.11 | 48.10 | 52.45 | 61.74 | 67.41 | b | 77.77 | a | 71.81 | 64.40 | 52.69 | 42.92 | 37.47 | a | 53.97 | ||||||||||
2008 | 31.73 | 41.67 | 44.69 | 48.48 | 60.64 | c | 65.07 | a | 74.78 | a | 72.35 | a | 63.78 | 52.11 | 45.12 | 30.21 | 52.55 | |||||||||
2009 | 35.10 | 36.48 | a | 42.58 | 51.98 | b | 60.44 | 68.61 | b | 75.27 | c | 75.00 | 66.50 | 50.55 | 44.13 | 28.61 | 52.94 | |||||||||
2010 | 39.50 | b | 41.89 | 47.34 | 51.03 | 57.34 | 65.34 | a | 73.20 | c | 72.32 | a | 64.92 | 54.43 | a | 41.80 | 35.37 | a | 53.71 | |||||||
2011 | 36.31 | 36.52 | b | 45.79 | 48.18 | b | 57.12 | c | 64.34 | a | 69.56 | 74.69 | 67.23 | b | 55.29 | b | 42.75 | 33.66 | 52.62 | |||||||
2012 | 35.79 | 38.93 | b | 46.42 | 53.77 | 59.12 | a | 64.21 | a | 74.60 | 73.81 | ----- | z | 53.84 | ----- | z | 37.47 | m | 55.61 | c | ||||||
2013 | 32.42 | ----- | z | 46.13 | ----- | z | ----- | z | ----- | z | ----- | z | 75.23 | 68.00 | ----- | z | 41.10 | 29.56 | 48.74 | f | ||||||
2014 | 35.89 | ----- | z | 46.95 | ----- | z | 61.10 | b | 67.15 | 77.55 | 75.40 | 65.71 | a | 59.37 | a | 40.88 | 38.13 | 56.81 | b | |||||||
2015 | 36.48 | 43.27 | 50.58 | ----- | z | ----- | z | 73.97 | a | 77.16 | 75.19 | 64.10 | 58.03 | 42.20 | 37.98 | 55.90 | b | |||||||||
2016 | 35.08 | 43.46 | a | 47.77 | a | 58.48 | 62.92 | a | 68.38 | a | 73.76 | 74.47 | b | 63.72 | 55.50 | 48.52 | 31.65 | 55.31 | ||||||||
2017 | 22.79 | 32.93 | 46.66 | c | 51.52 | 61.19 | 67.81 | a | 77.27 | 75.35 | 66.10 | 52.69 | 44.60 | 32.98 | 52.66 | |||||||||||
2018 | 39.35 | 40.41 | 44.71 | 52.95 | 65.10 | a | 67.11 | b | 75.58 | 74.15 | a | 64.79 | a | 53.03 | 41.70 | e | 39.06 | 54.83 | ||||||||
2019 | 37.02 | 26.69 | a | 36.66 | 54.03 | 61.89 | 69.40 | 73.07 | a | 75.32 | 68.03 | a | 49.13 | a | 39.70 | 35.85 | 52.23 | |||||||||
2020 | 39.97 | 41.48 | 45.74 | 52.73 | 61.24 | 67.27 | 74.37 | 75.42 | 66.60 | 56.05 | 43.18 | 35.93 | a | 55.00 | ||||||||||||
2021 | 39.19 | 35.70 | 46.60 | 53.78 | 61.73 | 73.38 | 80.15 | 75.10 | 66.05 | 55.31 | 46.85 | 37.55 | 55.95 | |||||||||||||
2022 | 32.56 | 38.16 | 48.45 | 48.42 | 56.58 | 66.22 | 77.82 | 78.83 | b | 68.52 | 59.69 | 39.10 | ----- | z | 55.85 | a | ||||||||||
2023 | ----- | z | ----- | z | ----- | z | 51.47 | 65.42 | a | 69.70 | ----- | z | 75.50 | ----- | z | ----- | z | ----- | z | ----- | z | 65.52 | h | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 34.42 | 39.15 | 46.10 | 52.75 | 60.59 | 67.75 | 74.78 | 74.03 | 65.43 | 54.00 | 42.88 | 35.09 | 53.96 | |||||||||||||
S.D. | 5.07 | 3.87 | 2.36 | 2.38 | 2.37 | 2.68 | 2.69 | 2.33 | 2.58 | 2.24 | 2.94 | 3.98 | 1.18 | |||||||||||||
SKEW | -0.96 | -1.01 | -0.86 | 0.09 | 0.36 | 0.52 | 0.12 | 0.47 | 0.29 | 0.66 | -0.45 | -0.77 | 0.35 | |||||||||||||
MAX | 43.37 | 46.04 | 50.58 | 58.48 | 67.26 | 74.73 | 81.37 | 79.87 | 72.23 | 59.69 | 48.52 | 41.61 | 56.58 | |||||||||||||
MIN | 18.56 | 26.69 | 36.66 | 48.03 | 56.40 | 63.33 | 68.88 | 69.82 | 59.98 | 49.13 | 35.20 | 22.55 | 51.58 | |||||||||||||
YRS | 63 | 62 | 62 | 63 | 62 | 65 | 64 | 64 | 62 | 65 | 64 | 64 | 46 |