YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1961 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 46.53 | 41.29 | 43.91 | j | ||
1962 | 39.84 | 43.75 | 41.55 | 55.47 | 57.32 | 66.93 | 74.10 | 75.94 | 70.83 | 59.39 | 51.77 | 44.32 | 56.77 | |||||||||||||
1963 | 36.71 | 47.04 | 45.16 | 48.50 | 62.13 | 63.90 | 75.81 | 71.35 | 70.57 | 61.52 | 49.03 | 38.58 | 55.86 | |||||||||||||
1964 | 35.68 | 35.00 | 41.26 | 49.60 | 57.65 | 66.10 | 76.06 | 72.06 | 67.30 | 62.48 | 43.80 | 40.29 | 53.94 | |||||||||||||
1965 | 41.58 | 39.29 | 41.94 | 49.37 | 54.52 | 60.37 | 74.90 | 72.58 | 63.80 | 59.52 | 52.00 | 41.48 | 54.28 | |||||||||||||
1966 | 36.68 | 36.86 | 45.90 | 52.10 | 62.48 | 67.70 | 75.52 | 75.06 | 70.47 | 58.81 | 49.80 | 40.77 | 56.01 | |||||||||||||
1967 | 38.55 | 39.25 | 48.48 | 46.87 | 59.16 | 65.20 | 76.10 | a | 76.39 | 70.87 | 60.84 | 50.77 | 37.55 | 55.83 | ||||||||||||
1968 | 38.65 | 48.76 | 46.10 | 49.97 | 59.58 | 70.70 | 75.94 | ----- | z | ----- | z | ----- | z | 47.83 | f | 37.08 | e | 53.35 | d | |||||||
1969 | 44.13 | a | 40.62 | g | 39.46 | c | 51.60 | 61.03 | 64.97 | 75.13 | 77.61 | 69.80 | 54.29 | 47.89 | b | 42.52 | b | 57.13 | a | |||||||
1970 | 37.83 | b | 46.14 | 43.29 | 45.90 | 60.45 | 69.47 | 75.45 | 74.97 | b | 65.57 | b | 52.80 | a | 47.41 | a | 39.68 | 54.91 | ||||||||
1971 | 37.48 | b | 39.57 | 45.45 | b | 49.12 | e | 54.32 | c | 67.03 | 75.90 | 71.81 | 67.40 | 53.29 | 45.33 | 37.90 | 53.72 | |||||||||
1972 | 36.39 | 41.24 | d | 52.72 | b | 50.90 | a | 57.18 | c | 69.31 | a | 75.76 | b | 72.59 | b | 67.31 | d | 57.13 | a | 42.21 | b | 37.34 | b | 55.01 | ||
1973 | 36.87 | a | 41.85 | b | 40.07 | d | 46.08 | e | 59.89 | d | 69.14 | a | 73.31 | b | 73.29 | 66.90 | a | 57.79 | g | 45.86 | b | 41.67 | d | 54.08 | a | |
1974 | 38.22 | h | 37.70 | e | 47.44 | f | ----- | z | 57.06 | 71.97 | a | 73.71 | 69.16 | 67.13 | 59.62 | b | 44.65 | d | 34.48 | b | 57.28 | c | ||||
1975 | 33.55 | b | 38.04 | c | 42.17 | y | 41.28 | e | 54.16 | 65.63 | 72.06 | m | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 46.53 | g | ||
1976 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1977 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1978 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1979 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1980 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1981 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1982 | ----- | z | ----- | z | 45.52 | 51.59 | a | 57.69 | b | 64.29 | b | 73.77 | 75.07 | c | 67.97 | a | 55.97 | 45.46 | b | 38.69 | b | 57.60 | b | |||
1983 | 40.61 | 40.96 | a | 43.65 | 44.37 | 56.19 | 64.13 | 72.97 | a | 71.26 | 71.00 | 58.23 | a | 45.93 | 41.54 | c | 54.24 | |||||||||
1984 | 41.17 | b | 41.14 | 45.32 | i | 49.59 | a | 63.39 | 66.33 | c | 72.65 | e | 71.63 | a | 68.62 | f | 51.26 | l | 44.86 | p | 34.50 | w | 57.99 | e | ||
1985 | 38.07 | p | 36.85 | o | 42.81 | d | 52.67 | f | 59.85 | d | 69.30 | g | 74.64 | f | 72.60 | f | 62.30 | g | 55.85 | e | 43.37 | c | 38.55 | b | 48.09 | g |
1986 | 42.83 | a | 40.14 | n | 48.82 | i | 50.76 | a | 58.16 | 70.40 | e | 72.19 | 77.37 | a | 65.41 | a | 57.55 | 49.17 | 43.20 | a | 58.70 | b | ||||
1987 | 38.83 | b | 43.36 | 43.64 | c | 58.10 | 62.35 | 71.70 | 73.37 | a | 74.06 | 69.13 | 64.03 | 47.27 | 38.80 | a | 57.05 | |||||||||
1988 | 40.57 | a | 45.59 | 45.97 | 53.47 | 61.23 | 71.67 | 76.90 | 75.19 | 68.59 | a | 64.58 | 46.87 | 41.50 | a | 57.68 | ||||||||||
1989 | 40.87 | 44.79 | 50.26 | 59.33 | 62.29 | 70.07 | 77.26 | 73.33 | a | 69.57 | 59.84 | 50.50 | 40.84 | 58.25 | ||||||||||||
1990 | 39.71 | 39.61 | 49.26 | 55.30 | 59.55 | 72.73 | 75.23 | 71.94 | 70.45 | a | 60.81 | 49.83 | 36.70 | a | 56.76 | |||||||||||
1991 | 40.61 | 48.82 | 41.35 | 50.43 | 57.84 | 66.97 | 75.29 | 76.48 | 70.57 | 62.35 | 46.83 | 43.87 | 56.79 | |||||||||||||
1992 | 40.55 | 46.55 | 47.68 | 56.37 | 63.42 | 68.43 | 73.90 | 73.94 | 70.90 | 61.42 | 45.03 | a | 40.57 | a | 57.40 | |||||||||||
1993 | 45.53 | a | 44.36 | 48.39 | 54.63 | 64.10 | 69.43 | 73.52 | 74.42 | 69.17 | 60.03 | 45.57 | 41.07 | a | 57.52 | |||||||||||
1994 | 41.00 | a | 42.11 | 49.74 | 54.97 | 60.16 | 73.97 | 77.39 | 78.74 | 71.93 | 57.90 | 44.57 | 44.03 | a | 58.04 | |||||||||||
1995 | 42.27 | a | 49.86 | 49.03 | 50.77 | 57.26 | 67.27 | 76.94 | 77.74 | 73.00 | 60.77 | 53.10 | 43.87 | a | 58.49 | |||||||||||
1996 | 42.55 | 48.62 | 48.29 | 56.20 | 63.84 | 73.67 | 77.20 | a | 76.58 | 66.38 | a | 59.06 | 50.52 | a | 43.60 | a | 58.88 | |||||||||
1997 | 42.40 | a | 44.42 | b | 51.45 | 52.07 | 67.53 | a | 68.53 | 76.65 | 76.32 | 74.10 | a | 59.19 | 50.52 | a | 40.61 | c | 58.65 | |||||||
1998 | 42.23 | a | 40.18 | 45.68 | 49.21 | a | 57.60 | a | 66.30 | 77.96 | e | 77.55 | 70.97 | a | 58.94 | 49.07 | a | 42.37 | a | 56.50 | ||||||
1999 | 43.83 | a | 44.93 | 48.94 | 48.50 | 59.35 | 69.79 | a | 74.32 | 75.97 | 70.57 | 62.68 | 54.93 | a | 41.39 | c | 57.93 | |||||||||
2000 | 45.53 | a | 46.59 | 47.52 | 56.82 | b | 66.25 | c | 73.03 | 77.39 | 76.87 | 73.67 | 58.61 | 42.17 | 43.76 | f | 60.40 | a | ||||||||
2001 | 39.33 | a | 42.58 | b | 49.32 | 53.83 | a | 66.80 | a | 72.30 | 76.93 | a | 75.84 | 73.73 | d | 63.17 | a | 52.43 | 39.21 | b | 58.79 | |||||
2002 | 40.77 | 43.50 | 46.19 | 56.47 | 61.93 | a | 72.83 | 78.29 | 76.33 | a | 71.76 | a | 57.71 | 50.73 | 41.46 | e | 58.17 | |||||||||
2003 | 47.10 | 43.96 | 46.43 | a | 50.93 | 64.03 | 70.40 | 79.17 | a | 77.00 | b | 72.62 | a | 65.42 | 47.47 | 41.97 | a | 58.88 | ||||||||
2004 | 43.63 | a | 41.36 | a | 57.04 | c | 55.37 | 63.76 | b | 72.29 | b | 80.24 | b | 78.19 | 70.77 | 59.61 | 47.62 | a | 42.59 | i | 60.90 | a | ||||
2005 | 44.17 | a | 46.46 | 47.90 | 54.28 | a | 63.40 | a | 71.03 | 77.08 | g | 75.43 | a | 71.77 | 62.47 | a | 51.70 | c | 42.52 | b | 57.38 | a | ||||
2006 | 43.50 | a | 43.75 | 44.70 | a | 53.32 | b | 64.32 | 74.83 | 75.50 | c | 76.23 | 66.17 | 59.41 | b | 51.86 | a | 40.69 | b | 57.86 | ||||||
2007 | 38.97 | a | 43.50 | 51.81 | 53.14 | b | 64.13 | a | 71.33 | 78.19 | 78.37 | a | 71.70 | 59.77 | 54.60 | 37.74 | 58.60 | |||||||||
2008 | 39.23 | a | 41.10 | 49.43 | a | 54.45 | a | 59.00 | c | 71.70 | 76.87 | a | 74.65 | 72.00 | a | 61.30 | a | 51.40 | 42.26 | 57.78 | ||||||
2009 | 43.46 | c | 44.89 | a | 49.52 | 53.21 | b | 66.10 | 68.86 | a | 79.10 | b | 75.93 | b | 72.43 | 57.11 | d | 52.33 | c | 39.96 | d | 58.58 | ||||
2010 | 43.44 | d | 44.12 | b | 46.32 | f | 50.89 | c | 57.68 | f | 70.52 | e | 79.70 | h | 76.15 | d | 73.61 | b | 61.70 | d | 47.96 | b | 46.32 | i | 58.55 | d |
2011 | 40.38 | b | 39.71 | d | 48.59 | b | 54.92 | e | 57.52 | h | 66.82 | b | 72.28 | f | 77.87 | h | 71.64 | h | 58.43 | j | 46.83 | g | 39.30 | h | 50.08 | g |
2012 | 42.59 | i | 44.48 | h | 45.88 | e | 54.14 | i | 63.17 | h | 71.24 | i | 74.48 | f | 77.85 | k | 69.82 | h | 60.68 | i | 52.96 | g | 41.00 | j | 45.88 | k |
2013 | 37.15 | e | 39.12 | b | 50.62 | e | 53.52 | g | 63.91 | i | 72.62 | f | 75.26 | l | 76.67 | d | 69.81 | c | 54.95 | k | 51.04 | g | 39.22 | h | 54.67 | g |
2014 | 43.23 | i | 46.89 | a | 51.15 | e | 53.39 | g | 60.52 | j | 71.35 | d | 76.56 | d | 72.68 | f | 71.46 | d | 62.60 | a | 49.07 | a | 44.00 | b | 59.13 | d |
2015 | 40.00 | y | 48.84 | c | 53.31 | b | 53.77 | d | 57.60 | a | 73.00 | b | 75.14 | c | 77.87 | a | 72.21 | a | 62.58 | 45.85 | c | 39.13 | a | 59.94 | a | |
2016 | 39.48 | b | 46.52 | 50.07 | b | 53.83 | a | 59.62 | b | 74.10 | a | 78.17 | b | 75.07 | b | 69.45 | a | 64.87 | a | 52.34 | a | 45.18 | c | 59.06 | ||
2017 | 42.13 | a | 47.00 | b | 51.29 | 54.28 | e | 61.59 | b | 72.97 | 77.00 | b | 76.65 | 68.89 | b | 64.52 | f | 55.70 | c | 45.44 | f | 60.75 | b | |||
2018 | 45.43 | c | 44.18 | 49.30 | a | 57.38 | a | 63.21 | b | 71.73 | 78.50 | c | 75.83 | a | 73.33 | c | 59.17 | a | 47.78 | c | 42.29 | c | 59.01 | |||
2019 | 41.21 | b | 38.54 | b | 48.03 | b | 55.04 | b | 56.00 | b | 69.71 | b | 77.14 | b | 77.69 | b | 69.89 | c | 57.65 | 49.89 | b | 42.59 | b | 56.95 | ||
2020 | 41.86 | c | 42.28 | d | 46.82 | c | 54.90 | a | 65.27 | e | 70.62 | a | 78.75 | c | 79.59 | d | 73.12 | e | 64.00 | a | 54.72 | e | 42.00 | a | 59.49 | |
2021 | 41.52 | f | 43.67 | a | 47.00 | c | 56.82 | b | 59.61 | c | 72.42 | k | 75.72 | m | 75.93 | c | 71.19 | c | 56.87 | a | 52.23 | d | 41.78 | d | 56.12 | c |
2022 | 44.57 | j | 43.85 | a | 50.93 | a | 57.16 | e | 65.14 | c | 75.24 | a | 78.45 | b | 76.55 | b | 73.00 | a | 60.50 | a | 43.97 | a | 41.62 | e | 60.58 | a |
2023 | 39.55 | b | 40.62 | b | 45.76 | b | 52.85 | c | 62.41 | d | 66.43 | 81.83 | b | 79.52 | b | 70.52 | g | 63.39 | 53.95 | h | 46.17 | b | 57.85 | b | ||
2024 | 40.28 | b | 44.83 | 46.42 | 50.85 | j | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 43.84 | i | ||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 40.74 | 43.22 | 47.27 | 52.47 | 60.76 | 69.52 | 76.22 | 75.46 | 70.21 | 59.93 | 48.75 | 40.97 | 57.17 | |||||||||||||
S.D. | 2.86 | 3.43 | 3.58 | 3.72 | 3.39 | 3.25 | 2.07 | 2.32 | 2.47 | 2.91 | 3.45 | 2.41 | 1.64 | |||||||||||||
SKEW | -0.10 | -0.16 | -0.04 | -0.68 | -0.02 | -0.46 | 0.22 | -0.59 | -0.57 | -0.33 | 0.03 | -0.33 | -0.68 | |||||||||||||
MAX | 47.10 | 49.86 | 57.04 | 59.33 | 67.53 | 75.24 | 81.83 | 79.59 | 74.10 | 65.42 | 55.70 | 46.17 | 59.49 | |||||||||||||
MIN | 33.55 | 35.00 | 39.46 | 41.28 | 54.16 | 60.37 | 72.19 | 69.16 | 63.80 | 52.80 | 42.17 | 34.48 | 53.72 | |||||||||||||
YRS | 49 | 52 | 52 | 51 | 51 | 52 | 48 | 50 | 49 | 48 | 50 | 48 | 34 |