YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1960 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 62.33 | r | ----- | z | ----- | z | 34.30 | a | 34.30 | k |
1961 | 38.13 | a | 38.70 | a | 39.25 | a | 46.27 | b | 50.98 | 65.22 | 67.82 | 69.81 | 55.18 | 48.27 | a | 37.98 | a | 34.02 | a | 49.30 | ||||||
1962 | 31.32 | 36.04 | 37.17 | a | 48.67 | 47.53 | 58.83 | 64.47 | a | 62.44 | 61.75 | 49.82 | 42.74 | a | 37.15 | 48.16 | ||||||||||
1963 | 31.66 | c | 42.46 | a | ----- | z | ----- | z | 52.77 | 56.72 | 59.39 | 63.52 | 63.58 | ----- | z | 40.38 | ----- | z | 51.31 | d | ||||||
1964 | ----- | z | 35.57 | ----- | z | ----- | z | ----- | z | ----- | z | 63.40 | 61.44 | 56.08 | 51.13 | 36.85 | 33.44 | 48.27 | e | |||||||
1965 | 33.40 | 37.38 | 41.94 | 47.33 | 48.58 | 57.13 | 64.84 | 63.61 | 55.22 | 52.40 | 41.90 | 33.35 | 48.09 | |||||||||||||
1966 | 32.53 | a | 34.79 | 37.21 | 46.45 | 53.45 | 56.73 | 61.66 | 63.53 | 59.70 | 49.77 | a | 41.90 | 34.85 | 47.71 | |||||||||||
1967 | 34.71 | 36.84 | 37.87 | 39.85 | 51.44 | 60.37 | 65.89 | 69.52 | 63.32 | 48.53 | 43.15 | 31.97 | 48.62 | |||||||||||||
1968 | 31.08 | 39.74 | 43.18 | 43.05 | 50.32 | 58.65 | ----- | z | 62.10 | 59.79 | a | 47.13 | 40.03 | 32.10 | 46.11 | a | ||||||||||
1969 | 28.53 | 32.82 | 37.76 | 43.22 | 54.63 | 61.15 | 63.63 | 62.34 | 58.90 | 45.81 | 41.65 | 36.21 | 47.22 | |||||||||||||
1970 | 34.34 | 40.09 | 40.37 | 40.33 | 51.53 | 61.97 | 65.35 | 64.56 | 53.65 | 47.31 | 40.38 | 31.27 | 47.60 | |||||||||||||
1971 | 30.13 | 34.31 | a | 33.71 | 40.79 | a | 50.44 | 53.97 | a | 65.84 | 66.91 | b | 54.95 | 45.55 | 38.17 | 31.82 | a | 45.55 | ||||||||
1972 | 29.95 | 34.69 | 40.00 | a | 41.23 | 53.31 | 59.20 | 66.66 | c | 66.73 | 55.71 | b | 49.47 | ----- | z | 32.02 | e | 48.09 | a | |||||||
1973 | 29.85 | a | 39.23 | 39.87 | 45.80 | 54.53 | 58.02 | a | 64.79 | 62.97 | 58.45 | 48.60 | 35.17 | 34.97 | 47.69 | |||||||||||
1974 | 29.97 | 35.23 | 38.39 | 43.52 | 49.61 | 59.90 | 63.10 | 65.29 | 63.92 | 52.27 | 41.42 | 35.69 | 48.19 | |||||||||||||
1975 | 33.58 | 34.00 | 38.03 | 40.07 | 50.13 | 56.82 | 65.60 | 61.16 | 62.78 | 48.10 | 37.27 | 35.52 | 46.92 | |||||||||||||
1976 | 34.10 | 34.52 | 37.52 | 42.63 | 52.39 | 55.05 | 63.48 | 61.58 | 61.30 | 51.58 | 44.83 | a | 35.45 | 47.87 | ||||||||||||
1977 | 33.61 | 42.46 | 37.94 | 48.25 | 46.47 | 61.82 | ----- | z | 68.13 | 56.32 | 50.37 | 37.87 | 37.89 | 47.37 | a | |||||||||||
1978 | 36.18 | 39.45 | 45.76 | 44.30 | 49.50 | 60.15 | 65.32 | 62.45 | 54.70 | 53.31 | 35.75 | 30.58 | 48.12 | |||||||||||||
1979 | 28.45 | a | 33.84 | 42.95 | 44.40 | 53.82 | 59.40 | 64.58 | a | 62.94 | 61.70 | 53.85 | 39.43 | 37.10 | 48.54 | |||||||||||
1980 | 32.90 | 40.62 | 40.19 | 46.45 | 50.71 | 54.80 | 65.13 | 61.08 | 58.55 | 51.92 | 42.30 | 35.55 | 48.35 | |||||||||||||
1981 | 40.12 | a | 38.64 | 42.50 | 45.48 | 50.77 | 56.25 | 62.79 | 67.21 | 59.43 | 48.05 | a | 41.30 | 35.69 | 49.02 | |||||||||||
1982 | 31.85 | 33.69 | a | 39.56 | 41.86 | a | 50.65 | a | 59.80 | 63.32 | 64.47 | 56.59 | b | 48.97 | 38.27 | b | 35.26 | 47.02 | ||||||||
1983 | 37.21 | 39.79 | 43.06 | 45.37 | 55.47 | a | 57.17 | a | 61.06 | 65.44 | 57.40 | 53.97 | 41.08 | 30.78 | a | 48.98 | ||||||||||
1984 | 35.03 | 38.50 | 43.61 | 42.02 | b | 50.35 | a | 55.76 | a | 67.11 | 65.21 | 57.50 | 46.63 | 37.83 | 31.53 | 47.59 | ||||||||||
1985 | 33.21 | b | 34.25 | 39.11 | 48.10 | 52.50 | 60.64 | a | 68.61 | 61.92 | a | 53.85 | c | 48.02 | c | 32.20 | e | 31.77 | c | 47.01 | ||||||
1986 | 37.14 | c | 37.41 | a | 45.54 | e | 44.37 | c | 52.60 | e | 62.11 | c | 60.68 | a | 67.87 | d | ----- | z | 52.32 | 45.84 | a | 35.73 | a | 49.24 | a | |
1987 | 32.24 | 38.41 | 42.00 | b | 52.14 | b | 55.41 | b | 62.75 | 62.84 | 65.69 | 62.21 | a | ----- | z | 41.75 | 33.42 | 49.90 | a | |||||||
1988 | 31.30 | a | 37.23 | a | 41.24 | 47.80 | 51.35 | 58.75 | 66.60 | b | 66.37 | a | 60.22 | a | 57.10 | b | 39.60 | 33.81 | 49.28 | |||||||
1989 | 32.35 | 31.66 | f | 38.08 | 49.62 | 51.79 | b | 61.75 | 62.96 | c | 62.81 | 60.71 | a | 49.09 | b | 40.45 | a | 34.28 | b | 49.44 | a | |||||
1990 | 36.80 | a | 31.48 | 41.38 | a | 50.65 | 51.12 | a | 59.08 | 68.10 | 66.03 | a | 63.45 | 48.00 | b | 40.14 | a | 29.21 | c | 48.79 | ||||||
1991 | 32.31 | 42.57 | 39.63 | 43.45 | 48.95 | 55.93 | a | 66.80 | a | 67.35 | 63.93 | 52.90 | b | 42.12 | b | 35.88 | b | 49.32 | ||||||||
1992 | 36.55 | 42.72 | 48.63 | a | 49.95 | a | 60.08 | 62.95 | 65.98 | 67.37 | 59.08 | 52.32 | a | 39.37 | 31.34 | 51.36 | ||||||||||
1993 | 28.11 | 32.69 | b | 40.69 | 44.22 | 55.39 | 57.03 | 58.74 | 63.60 | 61.93 | 53.35 | a | 34.90 | 34.13 | a | 47.07 | ||||||||||
1994 | 36.90 | 36.23 | 43.63 | 48.58 | 54.87 | 57.65 | 68.21 | 64.63 | 62.62 | 49.10 | 32.33 | 31.29 | b | 48.84 | ||||||||||||
1995 | 34.89 | 41.06 | a | 40.74 | 44.27 | 53.76 | 59.21 | a | 66.85 | 61.90 | 63.22 | 48.56 | 44.55 | b | 37.08 | a | 49.67 | |||||||||
1996 | 35.61 | 32.47 | 40.89 | 46.05 | a | 50.18 | 58.66 | b | 69.05 | a | 66.66 | 57.03 | 48.76 | 39.83 | 33.31 | 48.21 | ||||||||||
1997 | 32.37 | a | 38.39 | 40.77 | 44.40 | 55.95 | 57.27 | b | 64.52 | a | 67.16 | b | 60.34 | a | 48.22 | a | 43.07 | 33.63 | 48.84 | |||||||
1998 | 36.77 | 38.30 | 41.10 | 46.22 | a | 50.15 | a | 59.29 | a | 69.36 | b | 67.55 | a | 63.03 | 48.10 | a | 39.98 | 30.47 | 49.19 | |||||||
1999 | 33.62 | b | 33.23 | 38.03 | a | 43.35 | 48.63 | 56.67 | d | 64.19 | 66.17 | a | 59.98 | a | 52.29 | b | 43.18 | b | 34.71 | 47.84 | ||||||
2000 | 32.12 | a | 35.93 | 39.82 | 48.72 | 51.52 | 60.71 | a | 64.34 | 65.10 | a | 59.59 | a | 50.50 | j | 37.24 | i | 33.70 | k | 50.87 | c | |||||
2001 | 34.00 | j | 36.66 | i | 44.30 | i | 45.00 | i | 55.75 | i | 58.02 | i | 66.05 | k | 67.27 | i | 61.59 | n | 49.80 | k | 40.73 | j | 32.52 | j | ----- | z |
2002 | 31.45 | j | 35.16 | i | 37.67 | j | 46.75 | h | 49.77 | k | 61.19 | l | 70.12 | k | 65.92 | k | 61.26 | k | 49.34 | i | 40.92 | j | 35.98 | k | ----- | z |
2003 | 38.42 | k | 38.66 | i | 41.52 | j | 43.61 | h | 54.43 | i | 63.77 | j | 69.74 | j | 68.04 | h | 61.63 | d | 49.75 | e | 37.20 | h | 33.93 | c | 48.44 | i |
2004 | 31.59 | h | 36.43 | a | 44.72 | a | 48.88 | a | 53.54 | h | 58.81 | f | 67.97 | n | 67.88 | c | 58.64 | h | 51.10 | g | 39.96 | e | 34.40 | f | 47.57 | g |
2005 | 33.50 | k | 37.50 | e | 43.83 | h | 45.69 | i | 52.90 | j | 56.35 | j | 68.40 | g | 67.26 | f | 57.19 | f | 49.86 | j | 37.78 | e | 30.92 | e | 35.40 | i |
2006 | 34.23 | e | 34.06 | c | 37.44 | f | 47.04 | g | 57.52 | e | ----- | z | 69.76 | h | 66.11 | d | 60.09 | a | 50.74 | d | ----- | z | ----- | z | 50.46 | f |
2007 | 32.59 | i | 37.02 | e | 44.08 | k | 44.84 | h | ----- | z | 59.05 | k | 69.33 | e | 64.20 | f | ----- | z | 46.02 | e | ----- | z | 31.48 | h | 50.79 | i |
2008 | 29.61 | h | 34.80 | b | 34.72 | d | 38.40 | d | 52.24 | 56.04 | f | 66.11 | 65.45 | 61.03 | 49.63 | 41.80 | 32.00 | b | 47.62 | b | ||||||
2009 | 32.00 | 34.04 | 36.37 | 44.00 | 54.87 | 60.91 | a | 69.53 | 65.47 | 60.42 | j | 46.94 | 37.18 | 29.95 | 46.48 | a | ||||||||||
2010 | 37.21 | 39.73 | 39.81 | 42.97 | 48.44 | 55.90 | 66.76 | 65.60 | 58.85 | 49.68 | 37.52 | 32.45 | 47.91 | |||||||||||||
2011 | 32.73 | 33.30 | a | 35.08 | 40.18 | 46.95 | 56.23 | 61.97 | 66.71 | 63.18 | 50.45 | 36.87 | c | 31.65 | 46.27 | |||||||||||
2012 | 32.65 | 34.60 | 35.24 | 46.10 | 51.19 | 55.72 | 64.90 | 67.23 | ----- | z | 49.81 | 39.75 | 33.15 | 46.39 | a | |||||||||||
2013 | 28.52 | 34.27 | 40.35 | 45.20 | 52.97 | 58.92 | 69.19 | 66.47 | 58.82 | 46.11 | 38.45 | 29.53 | a | 47.40 | ||||||||||||
2014 | 34.63 | 34.36 | 41.58 | 46.10 | 54.66 | 57.95 | 69.03 | 67.63 | 62.32 | 52.13 | 39.83 | 37.37 | 49.80 | |||||||||||||
2015 | 36.29 | b | 42.00 | 46.47 | a | 45.58 | 54.76 | 66.88 | a | 67.87 | 68.37 | 57.85 | 54.61 | 37.90 | 33.92 | 51.04 | ||||||||||
2016 | 31.98 | 38.86 | 40.13 | 51.55 | 54.53 | 61.00 | 64.42 | 67.40 | 57.75 | 47.65 | 41.45 | 28.90 | 48.80 | |||||||||||||
2017 | 24.50 | j | 33.41 | e | 36.98 | 42.58 | 53.10 | 60.45 | 68.85 | 69.68 | 60.41 | a | 45.93 | a | 38.60 | 33.08 | 49.37 | a | ||||||||
2018 | 36.48 | 34.48 | a | 37.16 | 45.27 | 57.63 | 59.68 | 69.19 | 67.15 | 58.16 | a | 49.73 | 39.62 | 34.13 | 49.06 | |||||||||||
2019 | 34.48 | a | 29.98 | a | 35.97 | b | 46.17 | 54.60 | 60.38 | 64.82 | 67.22 | b | 57.54 | b | 44.76 | 40.30 | 34.39 | 47.55 | ||||||||
2020 | 32.66 | b | 36.38 | 39.89 | 48.08 | 53.35 | ----- | z | 65.47 | 66.79 | 60.55 | 49.60 | 37.54 | c | 34.63 | 47.72 | a | |||||||||
2021 | 35.13 | 33.70 | a | 39.34 | 46.77 | 53.84 | 65.92 | 69.95 | 68.35 | 58.85 | 46.85 | a | 41.00 | b | 33.93 | a | 49.47 | |||||||||
2022 | 31.73 | 34.30 | 43.05 | a | 39.83 | a | 48.55 | 58.85 | 70.12 | c | 71.11 | 63.11 | b | 55.95 | 35.17 | c | 30.65 | 48.53 | ||||||||
2023 | 32.24 | 32.77 | 33.75 | a | 40.72 | a | 56.97 | b | 61.53 | 68.26 | b | 70.32 | n | ----- | z | 50.47 | b | 40.97 | a | 35.67 | h | 46.41 | c | |||
2024 | 32.18 | 36.84 | 39.50 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 36.17 | i | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 33.38 | 36.48 | 39.99 | 45.05 | 52.32 | 59.16 | 65.62 | 65.56 | 59.59 | 49.78 | 39.62 | 33.45 | 48.34 | |||||||||||||
S.D. | 2.67 | 3.06 | 3.14 | 3.21 | 2.85 | 2.76 | 2.75 | 2.45 | 2.84 | 2.72 | 2.81 | 2.22 | 1.14 | |||||||||||||
SKEW | 0.12 | 0.35 | 0.30 | 0.06 | 0.23 | 0.58 | -0.33 | -0.13 | -0.29 | 0.48 | -0.40 | -0.06 | 0.25 | |||||||||||||
MAX | 40.12 | 42.72 | 48.63 | 52.14 | 60.08 | 66.88 | 70.12 | 71.11 | 63.93 | 57.10 | 45.84 | 37.89 | 51.36 | |||||||||||||
MIN | 28.11 | 29.98 | 33.71 | 38.40 | 46.47 | 53.97 | 58.74 | 61.08 | 53.65 | 44.76 | 32.20 | 28.90 | 45.55 | |||||||||||||
YRS | 55 | 60 | 56 | 55 | 56 | 53 | 55 | 57 | 54 | 56 | 56 | 56 | 41 |