YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1960 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 60.17 | 47.00 | 41.83 | 33.67 | a | 45.67 | h | |||
1961 | 37.58 | 32.89 | a | 34.36 | f | 43.90 | a | 50.20 | a | 62.57 | 60.57 | a | 59.83 | a | 55.07 | a | 48.48 | 36.90 | 33.94 | 47.45 | a | |||||
1962 | 29.77 | a | 35.68 | 31.97 | 48.25 | b | 47.26 | 58.03 | 62.23 | 64.35 | 59.23 | 51.26 | 44.97 | a | 35.29 | 47.36 | ||||||||||
1963 | 30.13 | 40.78 | a | 38.39 | 42.67 | 55.45 | b | 57.13 | 64.29 | 60.19 | 60.93 | a | 55.45 | 41.52 | a | 37.77 | 48.73 | |||||||||
1964 | 30.23 | 27.24 | 31.93 | a | 38.40 | 50.23 | 58.07 | a | 63.97 | 58.58 | 56.17 | 54.00 | 37.23 | 36.27 | a | 45.19 | ||||||||||
1965 | 36.21 | b | 31.48 | a | 33.35 | 41.87 | 48.03 | a | 54.21 | a | 61.61 | 61.97 | 55.67 | 55.23 | 46.73 | 34.48 | 46.74 | |||||||||
1966 | 30.32 | 28.78 | a | 40.71 | 45.73 | 52.77 | 59.47 | 62.32 | 60.68 | 57.07 | 49.68 | 43.55 | a | 36.13 | 47.27 | |||||||||||
1967 | 35.19 | 34.82 | 39.19 | 37.48 | a | 48.29 | 54.47 | 59.71 | 60.65 | 56.93 | 52.20 | a | 45.00 | 29.90 | 46.15 | |||||||||||
1968 | 32.74 | 39.52 | 36.48 | 38.57 | 49.83 | a | 60.21 | a | 60.03 | a | 57.00 | 57.90 | 52.03 | 38.90 | a | 32.90 | a | 46.34 | ||||||||
1969 | 36.37 | a | 28.32 | 31.90 | 43.30 | 51.48 | 52.47 | 58.90 | 61.61 | 59.76 | a | 47.26 | 39.80 | 36.55 | 45.64 | |||||||||||
1970 | 34.77 | 34.52 | a | 32.26 | 36.27 | 50.16 | 56.60 | 61.61 | 59.19 | 53.57 | 42.16 | 41.27 | 33.84 | 44.68 | ||||||||||||
1971 | 33.32 | 32.46 | 37.74 | 38.10 | 43.45 | 56.93 | 61.23 | 56.19 | 55.62 | a | 40.74 | 36.87 | 28.03 | 43.39 | ||||||||||||
1972 | 32.90 | 36.31 | 43.13 | 41.80 | 47.74 | 55.87 | 61.55 | 57.68 | 54.67 | 45.10 | 32.67 | 30.94 | 45.03 | |||||||||||||
1973 | 26.97 | 31.14 | 27.84 | 35.93 | 48.35 | 57.87 | 60.39 | 59.10 | 55.90 | 48.19 | 37.47 | 34.58 | 43.64 | |||||||||||||
1974 | 30.68 | 30.68 | 36.16 | 40.67 | 48.42 | 62.60 | 57.94 | 58.39 | 53.70 | 46.45 | 37.86 | a | 27.71 | 44.27 | ||||||||||||
1975 | 31.31 | b | 28.68 | 31.48 | 32.67 | 43.87 | 54.40 | 57.94 | 58.97 | 53.67 | 45.03 | 38.50 | 32.61 | 42.43 | ||||||||||||
1976 | 32.84 | 33.07 | 32.73 | a | 37.57 | 47.06 | 55.53 | 56.48 | 57.42 | 51.43 | 42.58 | 36.90 | 31.84 | 42.96 | ||||||||||||
1977 | 29.23 | 34.04 | 30.42 | 40.57 | 42.77 | 59.40 | 60.81 | 58.71 | 57.63 | 49.16 | 41.40 | 39.97 | a | 45.34 | ||||||||||||
1978 | 33.00 | 31.71 | 38.52 | 39.47 | 46.42 | 61.53 | 61.19 | 58.32 | 54.13 | 50.68 | 36.43 | 29.06 | 45.04 | |||||||||||||
1979 | 26.32 | 30.36 | 32.55 | 41.07 | a | 46.35 | 55.87 | 61.71 | 57.48 | 59.07 | a | 49.35 | 34.73 | 35.13 | a | 44.17 | ||||||||||
1980 | 33.74 | 35.93 | 32.65 | 39.53 | 43.48 | 59.77 | 62.48 | 59.42 | 56.37 | 46.48 | 38.97 | 39.13 | 45.66 | |||||||||||||
1981 | 34.10 | a | 36.46 | 32.45 | 43.07 | 46.90 | 60.50 | 60.06 | 60.26 | 55.67 | 44.42 | 41.60 | 38.19 | 46.14 | ||||||||||||
1982 | 32.13 | 34.21 | 33.94 | 40.83 | 46.52 | 54.21 | a | 59.03 | 58.45 | 55.50 | b | 45.19 | 37.79 | a | 30.58 | 44.03 | ||||||||||
1983 | 33.48 | 32.50 | 33.57 | a | 34.57 | 46.63 | a | 53.53 | 60.60 | a | 58.16 | 57.17 | 46.23 | a | 36.25 | b | 35.65 | 44.03 | ||||||||
1984 | 32.70 | a | 30.43 | a | 36.38 | b | 36.20 | 54.26 | 56.00 | a | 57.16 | 57.55 | 56.07 | a | 42.45 | 36.70 | 31.65 | 43.96 | ||||||||
1985 | 29.42 | 29.89 | 32.94 | 43.00 | 48.80 | a | 58.41 | a | 60.84 | 59.32 | 51.38 | a | 45.71 | 36.07 | 34.45 | 44.19 | ||||||||||
1986 | 39.27 | a | 35.04 | a | 41.19 | 44.72 | a | 50.68 | 61.13 | 60.00 | 60.58 | 55.76 | a | 47.10 | 39.10 | 33.84 | 47.37 | |||||||||
1987 | 30.24 | b | 32.00 | a | 33.03 | 45.03 | 47.26 | 60.14 | a | 60.16 | 58.97 | 55.21 | b | 52.68 | 38.50 | 29.86 | b | 45.26 | ||||||||
1988 | 33.81 | 38.62 | 37.37 | a | 42.43 | 47.87 | 59.72 | a | 61.16 | 60.66 | b | 56.77 | 53.26 | 40.04 | b | 31.84 | 46.96 | |||||||||
1989 | 29.35 | 36.73 | b | 42.97 | a | 51.34 | a | 51.83 | a | 60.56 | c | 63.68 | 60.58 | 59.47 | 49.35 | 42.00 | d | 35.41 | b | 48.61 | ||||||
1990 | 33.14 | b | 29.61 | 38.58 | 44.43 | b | 48.42 | 63.00 | a | 59.06 | 57.52 | b | 56.89 | b | 51.60 | a | 41.50 | b | 34.96 | f | 47.61 | a | ||||
1991 | 33.04 | c | 39.26 | a | 30.83 | a | 40.97 | a | 48.27 | a | 56.25 | b | 60.15 | d | 60.70 | d | 56.37 | 51.10 | b | 39.85 | c | 33.52 | f | 46.98 | a | |
1992 | 32.23 | e | 35.38 | 35.43 | c | 46.24 | a | 51.37 | a | 59.00 | a | 59.61 | h | 58.29 | c | 59.44 | c | 52.52 | b | 36.75 | b | 31.54 | e | 45.29 | a | |
1993 | 36.70 | a | 33.65 | e | 39.03 | b | 45.23 | d | 51.86 | b | 58.50 | b | 60.57 | c | 60.07 | c | 57.72 | a | 49.68 | 39.61 | b | 35.89 | c | 47.38 | ||
1994 | 36.93 | a | 34.48 | a | 39.28 | b | 44.31 | a | 49.27 | a | 62.69 | a | 63.61 | 63.59 | b | 58.85 | d | 46.63 | a | 36.50 | b | 37.15 | e | 47.77 | ||
1995 | 33.14 | c | 39.82 | 36.13 | 38.31 | a | 44.68 | 55.32 | b | 63.10 | a | 62.79 | c | ----- | z | ----- | z | ----- | z | 38.13 | h | 46.66 | d | |||
1996 | 37.19 | e | 36.44 | b | 37.00 | c | 44.74 | g | 54.04 | h | 64.08 | d | 62.67 | d | 60.40 | a | 53.41 | a | 48.06 | 40.11 | c | 37.03 | b | 47.64 | b | |
1997 | 31.33 | d | 29.81 | a | 40.96 | c | 39.13 | 51.50 | c | 50.48 | g | 59.16 | 58.68 | 57.31 | a | 48.10 | 41.83 | 27.82 | c | 44.15 | a | |||||
1998 | 35.54 | c | 29.48 | a | 34.81 | 37.97 | 47.53 | a | 57.37 | 62.10 | a | 61.55 | 58.87 | 49.77 | a | 42.69 | a | 33.37 | a | 45.92 | ||||||
1999 | 36.46 | c | 37.54 | b | 37.43 | a | 35.85 | d | 49.94 | 57.87 | 59.14 | b | 60.10 | a | 58.93 | 53.90 | a | 47.82 | b | 34.32 | c | 47.44 | ||||
2000 | 38.89 | c | 36.57 | a | 35.89 | c | 47.38 | a | 57.06 | 59.90 | 63.06 | 60.26 | 60.93 | b | 46.93 | d | 34.93 | a | 39.03 | b | 48.40 | |||||
2001 | 29.92 | f | 31.67 | a | 37.73 | a | 41.96 | c | 55.97 | 60.00 | b | 61.10 | 59.45 | 60.82 | b | 51.69 | b | 39.83 | a | 29.46 | c | 48.15 | a | |||
2002 | 33.83 | a | 35.39 | 36.84 | 46.34 | a | 50.52 | 64.33 | 61.65 | 62.06 | 58.86 | a | 46.19 | 41.93 | b | 31.93 | d | 47.49 | ||||||||
2003 | 41.30 | a | 33.36 | 35.50 | a | 40.14 | b | 52.45 | b | 61.00 | 63.84 | 60.63 | a | 59.63 | c | 53.33 | a | 37.75 | b | 33.85 | e | 47.73 | ||||
2004 | 31.43 | c | 28.14 | a | 45.52 | 39.14 | b | 45.37 | a | 56.79 | b | 62.00 | e | 60.38 | g | 59.64 | h | 45.89 | d | 34.78 | c | 33.73 | e | 42.28 | b | |
2005 | 34.52 | d | 34.59 | a | 34.80 | a | 41.44 | c | 51.81 | 58.43 | 63.62 | b | 59.20 | k | 60.05 | k | 49.43 | a | 44.96 | b | 38.87 | a | 45.25 | b | ||
2006 | 37.29 | c | 39.07 | a | 34.23 | 42.97 | a | 54.48 | 62.17 | a | 62.60 | a | 60.39 | 54.90 | 48.45 | 44.46 | b | 33.53 | a | 47.88 | ||||||
2007 | 28.72 | b | 34.31 | b | 40.48 | 42.63 | 52.29 | 61.90 | a | 61.83 | g | 61.42 | 58.13 | 50.73 | a | 46.41 | a | 30.14 | b | 46.11 | a | |||||
2008 | 31.33 | d | 34.61 | a | 37.89 | l | 44.04 | d | 47.24 | f | 60.11 | b | 59.32 | 59.17 | h | 57.72 | a | 50.61 | c | 43.47 | k | 31.37 | d | 46.14 | d | |
2009 | 32.79 | g | 35.04 | d | 34.43 | x | 39.96 | g | 51.13 | a | 57.72 | a | 59.92 | e | 56.27 | i | 57.15 | d | 44.55 | 41.39 | b | 32.14 | b | 47.38 | d | |
2010 | 31.36 | c | 30.40 | h | 29.34 | b | 32.33 | i | ----- | z | 47.11 | u | 58.08 | r | 57.56 | m | 59.48 | a | 46.80 | a | 37.90 | i | 36.33 | d | 40.66 | g |
2011 | 29.73 | e | 26.57 | e | 40.23 | r | 41.19 | i | 45.83 | m | 55.65 | d | 58.67 | a | 62.76 | b | 54.45 | h | 46.63 | l | 31.62 | f | 22.29 | g | 46.68 | g |
2012 | 33.16 | f | 28.75 | u | 31.08 | s | 39.25 | v | 46.91 | t | 57.70 | t | 57.00 | e | 60.27 | p | 52.17 | r | 46.45 | k | 42.10 | i | 31.89 | m | 57.00 | k |
2013 | 28.70 | d | 29.89 | 42.21 | b | 44.04 | d | 51.83 | a | 62.79 | b | 59.65 | e | 60.77 | e | 57.07 | a | 47.36 | c | 41.75 | b | 32.42 | g | 47.82 | a | |
2014 | 40.15 | d | 39.89 | 41.29 | c | 42.73 | 50.04 | d | 61.65 | d | 60.83 | a | 57.00 | j | 58.00 | b | 52.43 | c | 42.75 | b | 35.79 | g | 48.98 | b | ||
2015 | 36.85 | d | 41.24 | c | 43.10 | b | 44.42 | d | 44.73 | e | 60.54 | b | 60.23 | 62.62 | b | 57.80 | 50.50 | e | 39.48 | a | 31.31 | e | 47.74 | |||
2016 | 33.60 | a | 41.27 | c | 41.69 | b | 42.89 | b | 47.35 | 62.20 | 61.92 | e | 58.50 | c | 52.91 | g | 52.12 | e | 41.46 | b | 34.12 | e | 47.01 | a | ||
2017 | 31.40 | f | 37.29 | g | 42.81 | d | 43.80 | e | 45.67 | d | 60.44 | e | 55.52 | f | 57.30 | k | 51.04 | e | 53.03 | b | 47.33 | l | ----- | z | 49.47 | f |
2018 | ----- | z | 27.00 | n | 39.61 | c | 46.79 | a | 51.62 | b | 61.71 | b | 60.44 | d | 58.81 | e | 60.07 | c | 46.68 | 38.65 | d | 33.46 | e | 49.79 | b | |
2019 | 33.48 | d | 28.26 | e | 35.85 | d | 44.74 | c | 43.29 | c | 57.93 | a | 62.24 | b | 61.96 | d | 53.34 | a | 46.22 | d | 41.68 | b | 34.79 | c | 45.32 | |
2020 | 35.21 | c | 32.50 | a | 33.47 | p | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 33.86 | 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 | 24.18 | t | ----- | z |
2023 | 24.92 | s | ----- | z | 32.06 | n | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 59.92 | q | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 33.28 | 33.79 | 36.47 | 41.72 | 49.09 | 58.87 | 60.86 | 59.87 | 56.86 | 48.76 | 39.93 | 33.70 | 45.89 | |||||||||||||
S.D. | 3.28 | 3.82 | 4.08 | 3.72 | 3.35 | 2.89 | 1.83 | 1.78 | 2.46 | 3.43 | 3.31 | 3.03 | 1.70 | |||||||||||||
SKEW | 0.25 | 0.16 | 0.13 | -0.10 | 0.17 | -0.18 | -0.24 | 0.32 | -0.43 | -0.12 | 0.27 | -0.01 | -0.13 | |||||||||||||
MAX | 41.30 | 41.27 | 45.52 | 51.34 | 57.06 | 64.33 | 64.29 | 64.35 | 60.93 | 55.45 | 47.82 | 39.97 | 48.73 | |||||||||||||
MIN | 26.32 | 26.57 | 27.84 | 32.67 | 42.77 | 52.47 | 56.48 | 56.19 | 51.04 | 40.74 | 32.67 | 27.71 | 42.43 | |||||||||||||
YRS | 55 | 56 | 54 | 54 | 54 | 56 | 55 | 51 | 54 | 57 | 54 | 52 | 38 |