YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1960 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 67.98 | 56.74 | 50.71 | a | 41.63 | d | 54.27 | h | ||
1961 | 44.48 | d | 41.92 | b | 44.19 | g | 53.55 | b | 60.45 | a | 72.45 | 70.52 | b | 67.25 | a | 63.03 | a | 58.13 | a | 44.60 | 39.87 | 56.02 | a | |||
1962 | 39.28 | a | 43.41 | 40.94 | 58.23 | b | 58.77 | 68.37 | 71.52 | 73.81 | 67.40 | 59.48 | a | 52.74 | a | 45.68 | 56.64 | |||||||||
1963 | 41.84 | 49.31 | b | 46.13 | a | 50.48 | a | 62.43 | b | 64.32 | 72.27 | 66.50 | 68.02 | a | 61.66 | 48.52 | a | 44.82 | 56.36 | |||||||
1964 | 37.60 | 36.03 | 39.17 | a | 46.03 | 58.35 | 65.93 | a | 71.29 | 65.65 | 62.33 | 61.66 | 44.47 | 42.42 | a | 52.58 | ||||||||||
1965 | 43.67 | b | 38.56 | a | 40.23 | 48.73 | 55.73 | a | 61.07 | a | 69.73 | 69.87 | 63.07 | 62.23 | 52.52 | 41.15 | 53.88 | |||||||||
1966 | 36.74 | 34.78 | a | 47.81 | 52.95 | 60.29 | 67.07 | 69.98 | 67.48 | 63.52 | 56.84 | 50.38 | a | 43.21 | 54.25 | |||||||||||
1967 | 42.06 | 43.41 | 47.18 | 45.09 | a | 56.89 | 62.47 | 68.13 | 68.37 | 64.35 | 59.83 | a | 52.50 | 37.92 | 54.02 | |||||||||||
1968 | 40.31 | 46.43 | 43.42 | 46.58 | 58.17 | a | 66.55 | a | 67.95 | a | 63.71 | 65.20 | 59.42 | 46.12 | a | 40.62 | a | 53.71 | ||||||||
1969 | 43.37 | a | 36.30 | 38.94 | 51.40 | 59.75 | a | 61.83 | 67.63 | 69.45 | 66.84 | a | 54.13 | 46.23 | 42.60 | 53.21 | ||||||||||
1970 | 41.84 | 43.50 | a | 41.23 | 46.65 | 61.47 | 68.65 | 72.00 | 68.32 | 62.33 | 52.05 | 50.15 | 41.40 | 54.13 | ||||||||||||
1971 | 42.23 | 41.07 | 47.84 | 49.37 | 55.11 | 67.42 | 71.48 | 64.27 | 64.28 | a | 49.29 | 45.38 | 35.97 | 52.81 | ||||||||||||
1972 | 42.42 | 45.62 | 53.58 | 52.83 | 59.05 | 66.77 | 71.29 | 67.39 | 64.43 | 53.06 | 40.68 | 39.05 | a | 54.68 | ||||||||||||
1973 | 35.06 | 38.62 | 35.77 | 46.00 | 59.32 | 68.27 | 70.19 | 69.24 | 66.70 | 59.29 | 46.62 | 43.31 | 53.20 | |||||||||||||
1974 | 38.47 | 40.57 | 45.84 | 51.25 | 60.18 | 73.83 | 67.47 | 67.87 | 62.87 | 54.39 | 46.33 | a | 36.42 | 53.79 | ||||||||||||
1975 | 39.78 | b | 37.68 | 40.84 | 42.43 | 55.21 | 67.25 | 67.84 | 70.16 | 64.53 | 56.69 | 49.45 | 41.98 | 52.82 | ||||||||||||
1976 | 41.98 | 42.52 | 43.10 | a | 48.73 | 60.19 | 69.18 | 68.18 | a | 69.11 | 61.25 | 52.98 | 46.37 | 40.84 | 53.70 | |||||||||||
1977 | 36.92 | 43.75 | 40.29 | 52.22 | 54.32 | 71.10 | 71.29 | 69.60 | 67.87 | 59.32 | 51.03 | 46.95 | a | 55.39 | ||||||||||||
1978 | 40.81 | 39.54 | 46.95 | 50.38 | 57.74 | 72.50 | 72.21 | 68.74 | 64.85 | 60.73 | 44.57 | 38.05 | 54.76 | |||||||||||||
1979 | 34.15 | 41.41 | 42.73 | 52.79 | a | 58.39 | 68.43 | 72.66 | 67.94 | 70.57 | a | 61.63 | 45.58 | 45.40 | a | 55.14 | ||||||||||
1980 | 41.84 | 44.86 | 42.35 | 50.27 | 53.94 | 71.17 | 72.97 | 69.60 | 67.47 | 57.90 | 49.75 | 49.00 | 55.93 | |||||||||||||
1981 | 43.55 | a | 46.50 | 41.94 | 55.03 | 58.48 | 72.38 | 70.32 | 70.45 | 66.13 | 54.92 | 53.08 | 47.73 | 56.71 | ||||||||||||
1982 | 40.48 | 42.98 | 44.90 | 53.35 | 58.32 | 67.12 | a | 69.94 | 68.48 | 65.86 | b | 56.97 | 45.81 | a | 38.73 | a | 54.41 | |||||||||
1983 | 42.39 | 40.79 | 41.76 | b | 45.20 | 58.63 | a | 66.02 | 71.43 | b | 67.40 | 67.26 | a | 55.13 | a | 45.14 | b | 43.10 | 53.69 | |||||||
1984 | 40.98 | a | 41.77 | a | 47.59 | b | 48.42 | 65.82 | 67.50 | a | 66.48 | 66.00 | a | 65.93 | b | 51.06 | 46.65 | 39.16 | 53.95 | |||||||
1985 | 37.35 | 39.64 | 44.39 | 54.78 | 60.80 | a | 71.07 | a | 71.69 | 69.52 | a | 61.93 | a | 55.66 | 44.87 | 43.74 | 54.62 | |||||||||
1986 | 48.50 | a | 43.58 | c | 49.95 | 54.40 | a | 62.27 | 70.82 | 68.55 | 69.18 | 63.67 | a | 55.53 | 48.33 | 41.47 | a | 56.35 | ||||||||
1987 | 40.60 | b | 40.26 | a | 42.19 | 56.36 | a | 57.82 | 70.79 | a | 71.15 | 67.77 | 63.93 | b | 61.90 | 46.40 | 38.00 | d | 54.77 | |||||||
1988 | 41.53 | 46.72 | 47.65 | a | 52.37 | 59.73 | 70.66 | a | 71.76 | 68.86 | b | 66.27 | 62.23 | 48.50 | b | 40.53 | a | 56.40 | ||||||||
1989 | 38.62 | a | 45.10 | b | 52.63 | a | 61.79 | a | 62.68 | a | 71.09 | c | 73.94 | 68.85 | 68.98 | 57.97 | 51.27 | d | 43.62 | b | 58.05 | |||||
1990 | 41.26 | b | 38.50 | 47.85 | 54.09 | b | 58.81 | 73.69 | a | 68.56 | 66.41 | b | 65.68 | b | 60.57 | a | 50.05 | b | 42.26 | f | 56.86 | a | ||||
1991 | 40.48 | c | 47.80 | a | 39.45 | b | 51.31 | a | 58.70 | a | 65.91 | b | 69.75 | e | 69.79 | e | 64.92 | 60.74 | b | 48.41 | c | 39.66 | f | 56.11 | a | |
1992 | 40.27 | e | 42.69 | 43.43 | c | 56.62 | a | 60.87 | a | 68.97 | a | 69.59 | h | 67.43 | c | 67.81 | c | 61.17 | b | 45.81 | c | 38.12 | f | 55.51 | b | |
1993 | 43.10 | b | 40.22 | e | 48.64 | b | 55.12 | d | 62.38 | b | 68.89 | b | 69.96 | c | 68.59 | c | 66.28 | a | 57.40 | a | 46.93 | b | 44.33 | d | 55.99 | |
1994 | 45.57 | b | 42.20 | a | 48.10 | b | 54.34 | a | 59.60 | a | 72.98 | a | 74.45 | 72.40 | b | 67.56 | d | 56.02 | a | 45.38 | b | 44.58 | e | 56.93 | ||
1995 | 40.41 | c | 48.04 | 46.05 | a | 49.43 | a | 55.02 | 66.38 | b | 74.02 | a | 72.43 | c | ----- | z | ----- | z | ----- | z | 46.70 | i | 56.47 | d | ||
1996 | 46.87 | e | 45.50 | d | 48.06 | d | 55.83 | g | 65.28 | h | 74.15 | d | 72.06 | d | 69.58 | a | 62.12 | a | 57.00 | 50.54 | c | 45.78 | b | 57.16 | b | |
1997 | 39.12 | f | 40.93 | a | 51.09 | c | 50.07 | 65.14 | c | 65.07 | g | 73.19 | 70.32 | 68.17 | a | 58.19 | 51.63 | 36.89 | d | 56.56 | b | |||||
1998 | 43.33 | d | 36.17 | a | 43.11 | 46.92 | 57.70 | a | 67.13 | 71.13 | a | 69.95 | 67.27 | 58.57 | a | 50.93 | a | 42.10 | b | 54.53 | ||||||
1999 | 44.96 | c | 47.54 | b | 48.68 | a | 47.35 | d | 59.77 | 68.25 | 67.71 | b | 69.48 | a | 67.13 | 63.12 | a | 57.09 | b | 42.93 | c | 57.00 | ||||
2000 | 47.95 | c | 46.05 | a | 45.22 | f | 57.90 | a | 67.61 | 70.23 | 72.24 | 69.76 | 70.05 | b | 55.11 | d | 42.34 | a | 47.67 | b | 58.81 | a | ||||
2001 | 37.52 | f | 40.28 | a | 46.05 | c | 51.80 | c | 65.92 | 70.19 | c | 69.48 | 68.98 | 70.43 | b | 60.74 | b | 49.60 | a | 39.70 | c | 57.56 | a | |||
2002 | 43.13 | a | 45.43 | 47.13 | 56.93 | a | 61.76 | 74.52 | 71.35 | 70.70 | a | 67.95 | a | 55.66 | 51.04 | b | 39.72 | d | 57.11 | |||||||
2003 | 50.12 | a | 41.16 | 43.95 | a | 50.89 | b | 63.54 | c | 70.45 | 73.82 | 69.05 | a | 68.35 | c | 62.20 | a | 46.34 | b | 44.17 | e | 57.00 | ||||
2004 | 38.92 | e | 37.16 | a | 53.47 | 50.07 | c | 58.75 | a | 68.62 | b | 71.37 | e | 68.92 | k | 62.90 | j | 54.17 | e | 42.83 | c | 41.79 | e | 51.72 | b | |
2005 | 42.52 | d | 41.02 | a | 43.90 | a | 51.59 | c | 61.85 | 68.73 | 74.52 | c | 67.42 | k | 69.16 | k | 58.78 | a | 53.52 | b | 47.08 | a | 54.35 | b | ||
2006 | 45.41 | d | 47.19 | a | 42.89 | 52.94 | c | 64.56 | 72.00 | c | 72.00 | d | 67.25 | c | 62.41 | a | 56.22 | a | 53.29 | b | 42.00 | b | 56.51 | |||
2007 | 36.46 | c | 42.27 | b | 50.32 | 52.98 | 63.00 | 72.24 | a | 71.54 | g | 69.60 | 66.90 | 59.78 | a | 54.40 | a | 38.55 | b | 55.14 | a | |||||
2008 | 39.12 | e | 43.25 | a | 47.79 | l | 54.06 | d | 57.22 | f | 71.25 | b | 67.95 | 66.91 | h | 66.26 | a | 59.68 | c | 53.00 | k | 40.61 | d | 55.27 | d | |
2009 | 42.58 | g | 44.19 | d | 44.75 | y | 49.28 | g | 62.25 | a | 66.13 | c | 71.08 | f | 68.95 | i | 66.88 | d | 54.55 | 51.34 | b | 39.47 | b | 54.97 | e | |
2010 | 40.12 | c | 38.60 | h | 40.83 | b | 45.79 | i | ----- | z | 61.56 | u | 68.12 | r | 68.11 | m | 69.34 | a | 57.53 | a | 47.45 | i | 45.94 | d | 50.76 | g |
2011 | 41.12 | e | 36.96 | e | 51.00 | r | 52.24 | i | 56.92 | m | 68.00 | d | 69.32 | a | 72.07 | b | 66.93 | h | 58.76 | l | 42.02 | f | 31.62 | g | 57.49 | g |
2012 | 42.82 | f | 37.00 | u | 40.25 | s | 48.69 | v | 58.36 | t | 69.50 | t | 66.96 | e | 70.53 | p | 61.88 | r | 57.98 | k | 52.98 | j | 39.82 | n | 66.96 | k |
2013 | 37.33 | d | 38.09 | 51.40 | b | 53.40 | d | 61.85 | a | 72.88 | b | 69.10 | e | 69.35 | e | 65.66 | a | 56.52 | c | 49.57 | b | 40.56 | g | 56.83 | a | |
2014 | 48.07 | d | 48.18 | 50.34 | c | 53.28 | 60.81 | d | 71.90 | d | 70.10 | a | 66.55 | j | 65.30 | b | 60.55 | c | 50.43 | b | 42.90 | g | 57.90 | b | ||
2015 | 44.44 | d | 49.00 | c | 51.31 | b | 54.37 | d | 54.87 | e | 71.09 | b | 68.37 | 71.60 | b | 65.78 | 58.40 | e | 47.67 | a | 39.38 | e | 56.36 | |||
2016 | 41.18 | a | 50.25 | c | 51.10 | b | 52.71 | b | 57.77 | 72.77 | 72.25 | e | 67.52 | c | 62.50 | g | 62.44 | e | 50.66 | b | 43.29 | e | 56.54 | a | ||
2017 | 39.00 | f | 46.12 | g | 53.31 | d | 55.34 | e | 57.04 | d | 72.52 | e | 67.02 | g | 67.88 | k | 62.66 | e | 63.67 | b | 56.89 | l | ----- | z | 60.76 | f |
2018 | ----- | z | 38.25 | n | 48.50 | c | 57.83 | a | 62.12 | c | 71.38 | b | 70.37 | d | 68.46 | e | 68.83 | c | 54.39 | 48.56 | d | 42.25 | e | 59.27 | b | |
2019 | 42.76 | d | 36.93 | e | 46.52 | d | 54.87 | c | 53.86 | c | 69.14 | a | 72.62 | c | 72.24 | d | 63.83 | a | 57.15 | d | 51.66 | b | 42.95 | c | 55.38 | |
2020 | 44.71 | c | 41.75 | a | 45.27 | p | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 43.23 | j |
2021 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2022 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 34.00 | v | ----- | z |
2023 | 38.12 | s | ----- | z | 41.84 | o | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 67.41 | s | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 41.64 | 42.42 | 45.71 | 51.92 | 59.74 | 69.33 | 70.64 | 68.90 | 65.86 | 57.88 | 48.61 | 42.07 | 55.05 | |||||||||||||
S.D. | 3.35 | 3.83 | 4.28 | 3.84 | 3.15 | 3.07 | 2.04 | 1.97 | 2.36 | 3.24 | 3.36 | 3.09 | 1.46 | |||||||||||||
SKEW | 0.22 | 0.05 | -0.02 | -0.13 | 0.20 | -0.58 | -0.09 | -0.11 | -0.04 | -0.34 | 0.01 | 0.16 | 0.14 | |||||||||||||
MAX | 50.12 | 50.25 | 53.58 | 61.79 | 67.61 | 74.52 | 74.52 | 73.81 | 70.57 | 63.67 | 57.09 | 49.00 | 58.05 | |||||||||||||
MIN | 34.15 | 34.78 | 35.77 | 42.43 | 53.86 | 61.07 | 66.48 | 63.71 | 61.25 | 49.29 | 40.68 | 35.97 | 52.58 | |||||||||||||
YRS | 54 | 56 | 53 | 54 | 54 | 56 | 54 | 51 | 54 | 57 | 54 | 51 | 37 |