YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1953 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 64.91 | g | 53.08 | 43.12 | a | 30.37 | a | 42.19 | i | |
1954 | 37.48 | a | 42.91 | a | 38.38 | b | 53.77 | 55.05 | 66.59 | b | 72.32 | 69.29 | 66.00 | 54.68 | 45.22 | 36.60 | a | 53.19 | ||||||||
1955 | 31.33 | a | 29.59 | 38.98 | a | 47.04 | b | 55.15 | a | 62.47 | 68.63 | a | 68.35 | 64.53 | 56.10 | a | 41.53 | 39.33 | d | 50.25 | ||||||
1956 | 37.62 | a | 31.96 | a | 41.60 | a | 46.53 | 60.73 | 68.87 | 68.68 | a | 67.32 | 65.68 | 55.10 | 36.93 | 36.55 | a | 51.46 | ||||||||
1957 | 32.68 | 42.39 | 37.77 | 42.00 | 50.05 | 63.22 | 68.76 | 66.60 | a | 60.13 | 49.47 | 32.02 | b | 37.29 | b | 48.53 | ||||||||||
1958 | 32.50 | a | 37.46 | 30.35 | a | 41.48 | 56.23 | a | 65.00 | 67.44 | 68.08 | 61.25 | 51.27 | 41.02 | b | 37.16 | 49.10 | |||||||||
1959 | 31.21 | 32.59 | 36.60 | 44.78 | 55.42 | 64.82 | 66.50 | 67.58 | 62.90 | 49.21 | 37.97 | 36.56 | 48.84 | |||||||||||||
1960 | 29.03 | 25.48 | 38.60 | 49.83 | 56.63 | a | 66.77 | 68.08 | 69.40 | 63.95 | 51.89 | 42.33 | 31.60 | a | 49.47 | |||||||||||
1961 | 32.53 | a | 34.50 | 39.32 | 44.70 | 56.58 | 65.33 | 67.92 | 66.61 | 58.09 | a | 52.12 | a | 36.93 | 30.48 | a | 48.76 | |||||||||
1962 | 28.60 | 39.00 | c | 35.00 | 49.37 | 59.27 | 62.75 | 67.74 | 70.71 | 62.69 | a | 55.29 | 43.65 | 35.80 | c | 50.82 | ||||||||||
1963 | 26.07 | c | 36.80 | 39.87 | a | 50.47 | 58.58 | 65.07 | 71.66 | 67.44 | 63.82 | 57.55 | 42.72 | 31.35 | a | 50.95 | ||||||||||
1964 | 29.25 | a | 24.60 | 33.52 | 44.93 | 56.47 | ----- | z | 71.24 | 66.65 | 60.00 | 53.22 | a | 38.71 | a | 31.52 | 46.37 | a | ||||||||
1965 | 33.73 | 30.11 | a | 30.40 | a | 47.98 | 53.45 | 60.05 | 67.61 | 64.76 | 57.03 | 53.16 | 45.47 | 36.94 | 48.39 | |||||||||||
1966 | 27.48 | d | 28.54 | a | 41.19 | 46.55 | 57.66 | 63.55 | 71.15 | 65.18 | 62.07 | 50.82 | a | 44.10 | d | 33.65 | a | 49.33 | ||||||||
1967 | 31.41 | c | 32.52 | 44.08 | 49.22 | 53.13 | 61.48 | a | 67.55 | 63.92 | 57.92 | 52.42 | a | 41.30 | 26.68 | 48.47 | ||||||||||
1968 | 32.08 | a | 33.91 | b | 38.69 | b | 42.74 | a | 52.45 | 65.40 | 66.29 | 63.87 | 58.73 | 52.85 | 37.00 | 32.48 | 48.04 | |||||||||
1969 | 37.39 | 34.02 | 30.69 | 48.63 | 56.58 | 60.20 | 68.85 | a | 68.63 | 61.35 | 45.19 | 39.42 | 35.15 | 48.84 | ||||||||||||
1970 | 31.50 | a | 36.70 | 34.58 | 43.08 | 56.50 | 62.70 | 68.74 | 69.03 | 58.98 | a | 45.08 | 40.00 | o | ----- | z | 50.69 | b | ||||||||
1971 | 33.29 | 31.66 | 39.21 | 45.40 | 52.32 | 66.27 | 67.23 | 65.02 | 58.05 | 49.55 | 40.72 | 31.08 | 48.32 | |||||||||||||
1972 | 33.93 | a | 38.56 | b | 45.42 | 49.65 | 55.16 | 66.92 | 66.39 | 65.90 | 61.27 | 51.39 | 31.67 | 31.24 | 49.79 | |||||||||||
1973 | 29.90 | 33.21 | 36.35 | 38.88 | 52.90 | 63.73 | 68.56 | 68.35 | 58.85 | 52.75 | a | 44.47 | 33.45 | 48.45 | ||||||||||||
1974 | 29.73 | 33.75 | 44.48 | 45.82 | 59.92 | 65.45 | 70.11 | 64.73 | 57.17 | a | 52.85 | 39.52 | 30.60 | 49.51 | ||||||||||||
1975 | 29.90 | 30.52 | a | 36.98 | 43.70 | 53.77 | a | 63.03 | 67.94 | 68.26 | 58.58 | 52.57 | b | 38.80 | 35.97 | 48.33 | ||||||||||
1976 | 30.68 | a | 39.20 | a | 38.66 | 47.60 | 52.50 | 64.31 | a | 67.97 | a | 66.19 | 59.97 | 45.90 | 38.30 | 33.58 | 48.74 | |||||||||
1977 | 29.44 | 35.59 | 37.19 | 47.65 | 57.50 | 67.75 | d | 69.48 | a | 68.21 | 63.85 | 54.30 | a | 41.75 | 38.16 | 50.91 | ||||||||||
1978 | 30.76 | 31.96 | 41.27 | 51.57 | 53.87 | 65.70 | 70.94 | 67.02 | 62.23 | 52.93 | b | 40.48 | 28.21 | 49.75 | ||||||||||||
1979 | 22.82 | 32.36 | 38.87 | 47.18 | 54.34 | c | 63.78 | 69.40 | 65.13 | 62.50 | 54.27 | a | 34.32 | 35.47 | 48.37 | |||||||||||
1980 | 30.88 | a | 36.45 | 36.73 | 43.83 | 52.73 | 68.50 | 73.55 | a | 69.24 | 62.87 | 51.13 | a | 40.87 | 41.39 | 50.68 | ||||||||||
1981 | 36.84 | 37.85 | a | 38.42 | 52.32 | 53.98 | a | 67.87 | 68.95 | 65.03 | 60.87 | 51.15 | 44.63 | 36.02 | 51.16 | |||||||||||
1982 | 30.90 | 32.24 | a | 40.21 | 45.58 | 53.92 | 60.25 | 69.29 | 67.94 | 61.04 | b | 49.05 | a | 38.57 | 32.18 | a | 48.43 | |||||||||
1983 | 33.76 | 33.71 | 37.10 | 41.08 | 52.10 | e | 59.80 | 69.60 | b | 69.97 | 63.35 | 52.00 | 40.82 | 25.40 | a | 48.22 | ||||||||||
1984 | 29.13 | 32.80 | b | 35.80 | a | 42.37 | 57.94 | 63.88 | a | 68.94 | 66.85 | 59.37 | 43.61 | 39.93 | 33.53 | 47.85 | ||||||||||
1985 | 26.74 | 30.07 | a | 40.77 | a | 49.43 | 56.57 | a | 63.57 | 68.65 | 67.92 | 58.25 | 50.25 | a | 40.27 | 32.00 | 48.71 | |||||||||
1986 | 38.47 | 37.32 | 44.79 | 48.63 | 54.58 | 62.65 | 67.19 | 66.32 | a | 58.70 | 47.12 | b | 37.58 | 32.02 | 49.61 | |||||||||||
1987 | 30.80 | a | 33.11 | a | 35.18 | 44.80 | 53.87 | a | 64.35 | 68.02 | 66.14 | c | 58.30 | 52.32 | 38.70 | 28.88 | c | 47.87 | ||||||||
1988 | 25.50 | 35.52 | 36.53 | 47.30 | 52.68 | 63.92 | 67.16 | 65.50 | 56.59 | a | 51.59 | b | 39.00 | 30.55 | a | 47.65 | ||||||||||
1989 | 33.97 | 29.12 | 45.22 | a | 49.13 | 57.98 | a | 60.67 | 69.29 | 66.18 | a | 59.78 | 50.61 | 42.95 | 28.56 | 49.46 | ||||||||||
1990 | 31.63 | 31.77 | 38.95 | a | 45.97 | 53.65 | a | 69.82 | 65.93 | a | 65.24 | 62.65 | 50.69 | 42.77 | 28.25 | e | 48.94 | |||||||||
1991 | 30.40 | 39.29 | 37.63 | a | 45.55 | 56.83 | a | 64.65 | 66.65 | 66.19 | 58.17 | 52.03 | 35.88 | 33.77 | 48.92 | |||||||||||
1992 | 32.59 | b | 37.12 | a | 42.28 | a | 51.83 | 56.05 | a | 61.62 | 66.89 | 65.16 | 61.97 | 54.15 | 35.60 | a | 31.98 | c | 49.77 | |||||||
1993 | 32.47 | a | 33.52 | a | 41.62 | a | 46.33 | 55.53 | a | 63.78 | 70.05 | 65.18 | a | 58.52 | a | 50.31 | b | 38.71 | b | 34.21 | b | 49.19 | ||||
1994 | 35.62 | b | 34.18 | c | 42.47 | b | 47.67 | c | 56.82 | 69.72 | a | 69.35 | 68.84 | 62.33 | 50.08 | 39.75 | 37.23 | 51.17 | ||||||||
1995 | 32.47 | 41.00 | a | 41.55 | a | 43.64 | a | 50.75 | a | 61.17 | 68.50 | 70.44 | 60.14 | a | 52.10 | 44.44 | d | 34.40 | a | 50.05 | ||||||
1996 | 33.17 | b | 37.50 | b | 38.36 | b | 48.50 | c | 62.19 | 65.66 | a | 68.15 | 67.05 | 58.20 | b | 51.09 | c | 42.59 | b | 37.14 | i | 52.04 | a | |||
1997 | 30.89 | i | 32.19 | g | 43.44 | e | 40.70 | h | 55.00 | d | 64.32 | b | 69.60 | a | 66.77 | 64.40 | e | 51.68 | c | 36.04 | c | 29.67 | b | 53.44 | c | |
1998 | 32.65 | a | 32.68 | 36.53 | a | 43.41 | a | 60.16 | 66.10 | a | 69.32 | 67.33 | a | 65.58 | 51.14 | b | 44.13 | 35.12 | a | 50.35 | ||||||
1999 | 36.41 | d | 40.69 | a | 42.88 | a | 43.22 | a | ----- | z | 64.08 | 69.00 | 67.57 | a | 59.28 | 53.69 | 49.34 | b | 33.48 | a | 50.88 | a | ||||
2000 | 35.66 | b | 41.30 | a | 41.46 | c | 50.80 | c | 60.85 | 65.62 | 71.15 | a | 70.85 | a | 64.97 | 51.25 | c | 34.16 | b | 32.47 | b | 51.71 | ||||
2001 | 31.95 | b | 36.50 | a | 39.40 | a | 51.20 | c | 57.06 | 66.78 | 71.71 | 68.74 | 64.76 | a | 53.87 | a | 44.20 | 34.50 | 51.72 | |||||||
2002 | 33.55 | c | 34.23 | b | 39.22 | b | 52.67 | a | 58.73 | 69.42 | 71.02 | 69.79 | 61.22 | 48.11 | 40.16 | a | 33.45 | 50.96 | ||||||||
2003 | 38.82 | 33.46 | b | 41.73 | a | 49.68 | 58.73 | 62.29 | a | 74.73 | 70.15 | 60.17 | 57.47 | a | 43.39 | b | 34.92 | a | 52.13 | |||||||
2004 | 35.03 | a | 31.79 | a | 46.18 | 46.84 | b | 60.08 | 64.85 | 67.53 | 64.16 | b | 60.98 | 50.62 | a | 38.42 | d | 36.86 | j | 51.50 | a | |||||
2005 | 38.38 | b | 36.00 | a | 39.09 | c | 46.36 | a | 55.61 | 65.09 | a | 70.78 | a | 66.98 | 64.05 | 51.83 | a | 44.65 | d | 34.60 | b | 51.12 | ||||
2006 | 37.70 | c | 36.78 | e | 41.40 | a | 52.57 | b | 60.45 | 69.26 | a | 70.89 | 66.60 | 56.66 | a | 50.38 | b | 44.57 | a | 33.58 | e | 51.74 | ||||
2007 | 28.36 | c | 37.09 | a | 44.53 | a | 47.31 | d | 55.42 | a | 64.47 | 70.08 | 71.88 | a | 63.80 | 54.80 | a | 43.67 | c | 32.06 | 51.12 | |||||
2008 | 29.90 | a | 36.56 | b | 39.95 | a | 46.66 | a | 55.26 | 66.96 | c | 69.58 | a | 66.94 | 61.48 | 53.35 | a | 44.87 | c | 35.75 | e | 50.60 | ||||
2009 | 38.23 | c | 39.48 | b | 43.31 | b | 46.77 | 57.68 | c | 64.81 | a | 69.89 | 68.71 | b | 59.52 | 47.50 | b | 47.10 | d | 29.83 | b | 51.07 | ||||
2010 | 35.44 | d | 30.76 | e | 39.90 | b | 49.02 | b | 54.95 | 69.34 | a | 69.68 | 69.11 | 66.39 | b | 54.22 | b | 41.87 | c | 38.58 | f | 52.79 | a | |||
2011 | 34.47 | b | ----- | z | ----- | z | 49.72 | 54.73 | 70.15 | 73.72 | a | 72.11 | 62.17 | 52.52 | a | 41.66 | b | 31.60 | b | 54.28 | b | |||||
2012 | 37.91 | c | 32.94 | b | 47.21 | b | 53.21 | a | 60.03 | a | 70.55 | 73.32 | 70.06 | 63.59 | a | 51.79 | 47.00 | 33.71 | 53.44 | |||||||
2013 | 32.08 | ----- | z | 40.90 | a | ----- | z | 56.65 | 69.65 | 69.40 | 69.60 | 62.97 | a | 50.52 | a | 41.05 | 35.13 | 52.79 | b | |||||||
2014 | 35.24 | 36.41 | 42.42 | 47.47 | 56.53 | 66.93 | 69.68 | 68.06 | 64.07 | 53.69 | 37.27 | 32.42 | 50.85 | |||||||||||||
2015 | 34.23 | 34.66 | 42.89 | 47.33 | 52.68 | 66.10 | 67.66 | 68.23 | 65.93 | 52.74 | 39.77 | 33.71 | 50.49 | |||||||||||||
2016 | 32.69 | 39.00 | 41.60 | 45.83 | x | 53.94 | g | 66.67 | 70.66 | 65.94 | g | 62.86 | a | 56.34 | 49.83 | x | ----- | z | 52.83 | e | ||||||
2017 | 32.76 | 40.73 | 47.05 | a | 49.75 | j | 53.53 | 64.60 | a | 64.76 | 64.26 | 60.62 | 50.55 | 46.03 | 36.08 | 51.00 | a | |||||||||
2018 | 35.48 | 35.79 | 42.89 | 46.78 | 60.65 | 68.67 | 69.65 | 66.98 | 62.63 | 49.48 | 37.12 | 32.13 | 50.69 | |||||||||||||
2019 | 33.52 | 34.16 | 37.50 | 47.77 | 52.05 | 62.53 | 69.97 | 70.50 | 66.03 | 45.77 | 39.08 | 34.68 | 49.46 | |||||||||||||
2020 | 33.42 | 31.67 | 43.18 | 46.98 | 59.52 | 67.22 | 70.32 | 71.05 | 60.62 | 52.37 | 44.05 | 33.15 | 51.13 | |||||||||||||
2021 | 31.63 | 30.06 | k | 41.13 | a | 42.75 | 54.84 | 66.25 | 68.90 | 69.17 | e | 65.37 | 52.29 | 46.53 | 38.82 | 52.52 | a | |||||||||
2022 | 34.05 | 29.68 | 39.03 | 48.22 | 58.15 | 66.03 | 70.24 | 67.34 | 65.57 | 50.37 | 35.04 | c | 33.87 | 49.80 | ||||||||||||
2023 | 31.42 | 34.46 | 38.58 | 46.25 | 57.03 | 63.13 | 70.81 | 69.66 | 63.73 | 52.34 | 42.83 | 35.44 | 50.47 | |||||||||||||
2024 | 30.45 | 36.74 | 40.34 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 35.84 | i | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 32.56 | 34.72 | 39.79 | 47.08 | 55.98 | 65.14 | 69.25 | 67.59 | 61.54 | 51.62 | 40.82 | 33.45 | 49.88 | |||||||||||||
S.D. | 3.31 | 3.80 | 3.62 | 3.16 | 2.73 | 2.68 | 1.90 | 2.01 | 2.68 | 2.74 | 3.69 | 3.04 | 1.36 | |||||||||||||
SKEW | -0.21 | -0.11 | -0.38 | -0.09 | 0.17 | 0.07 | 0.46 | 0.12 | 0.00 | -0.59 | -0.24 | -0.13 | 0.43 | |||||||||||||
MAX | 38.82 | 42.91 | 47.21 | 53.77 | 62.19 | 70.55 | 74.73 | 72.11 | 66.39 | 57.55 | 49.34 | 41.39 | 53.44 | |||||||||||||
MIN | 22.82 | 24.60 | 30.35 | 38.88 | 50.05 | 59.80 | 64.76 | 63.87 | 56.59 | 43.61 | 31.67 | 25.40 | 47.65 | |||||||||||||
YRS | 70 | 67 | 70 | 66 | 68 | 69 | 70 | 69 | 70 | 71 | 69 | 66 | 58 |