YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1948 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1949 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1950 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1951 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 65.41 | a | 75.12 | a | 71.39 | 67.18 | 55.79 | 41.93 | 34.53 | 58.77 | e | |||||
1952 | 37.15 | 34.71 | 34.27 | 50.12 | 59.92 | 68.05 | 71.94 | 71.18 | 67.43 | 59.00 | 39.57 | 33.26 | 52.22 | |||||||||||||
1953 | 38.11 | 34.02 | 42.94 | 49.53 | 52.66 | 68.90 | 73.58 | 71.13 | 68.20 | 55.44 | 45.65 | 30.73 | 52.57 | |||||||||||||
1954 | 35.77 | 42.64 | 41.21 | 55.62 | 59.63 | 67.40 | 74.52 | g | 68.08 | 67.37 | 58.10 | 46.52 | 36.74 | 52.64 | a | |||||||||||
1955 | 30.37 | 31.65 | b | 41.85 | 48.32 | 57.50 | 66.20 | 70.97 | 69.24 | h | 66.58 | 57.40 | 42.87 | 39.29 | 50.27 | a | ||||||||||
1956 | 38.82 | 30.84 | a | 43.90 | 49.19 | a | 61.08 | 71.85 | 71.44 | 68.00 | 68.90 | 56.18 | 39.21 | a | 34.20 | a | 52.80 | |||||||||
1957 | 36.62 | a | 45.69 | a | 42.55 | 48.55 | a | 54.64 | b | 67.97 | 73.34 | 68.66 | 64.33 | 52.56 | 38.65 | 38.52 | a | 52.67 | ||||||||
1958 | 33.55 | a | 40.36 | 38.07 | a | 48.04 | b | 63.05 | 71.05 | 73.16 | 71.29 | 65.13 | 55.35 | 42.53 | a | 40.67 | a | 53.52 | ||||||||
1959 | 37.03 | 35.43 | a | 42.26 | b | 53.85 | 58.19 | 71.48 | 73.23 | 68.74 | 63.20 | 54.92 | 41.85 | 37.07 | a | 53.10 | ||||||||||
1960 | 28.03 | 32.33 | b | 46.47 | 52.20 | 58.39 | 70.97 | 72.94 | 72.32 | 68.05 | 53.18 | 44.79 | a | 31.98 | a | 52.64 | ||||||||||
1961 | 36.12 | a | 38.34 | 42.61 | 50.60 | 59.03 | 71.40 | 73.63 | 70.27 | 61.97 | 53.60 | a | 39.38 | a | 32.15 | a | 52.43 | |||||||||
1962 | 30.98 | 39.44 | a | 37.15 | 54.38 | 57.34 | 66.67 | 71.37 | 73.06 | 65.80 | 55.27 | 46.68 | 38.15 | a | 53.03 | |||||||||||
1963 | 29.85 | a | 40.54 | a | 41.63 | 48.67 | 61.26 | 64.62 | 74.08 | 68.73 | 66.97 | 58.23 | 44.00 | a | 35.60 | 52.85 | ||||||||||
1964 | 29.95 | 31.55 | 37.35 | 47.32 | b | 58.50 | 67.17 | 73.55 | 69.56 | 63.13 | 57.23 | 40.33 | 34.39 | 50.84 | ||||||||||||
1965 | 36.52 | 33.91 | 39.28 | a | 48.42 | 55.22 | a | 63.02 | 71.53 | 70.98 | 62.50 | a | 56.13 | 46.55 | a | 33.98 | b | 51.50 | ||||||||
1966 | 30.20 | a | 28.46 | d | 43.17 | a | 51.42 | 60.97 | a | 67.30 | 74.35 | 70.77 | 63.78 | 52.95 | 46.26 | a | 35.21 | 52.07 | ||||||||
1967 | 33.39 | 38.62 | 45.87 | 47.23 | 55.90 | 64.18 | 71.35 | 67.95 | 63.33 | 55.16 | 46.00 | 31.13 | 51.68 | |||||||||||||
1968 | 33.45 | 41.95 | 42.56 | ----- | z | 56.94 | 66.95 | 69.69 | 65.60 | 62.10 | 54.98 | 41.62 | 31.95 | 51.62 | a | |||||||||||
1969 | 37.29 | 36.91 | 38.00 | 50.70 | 58.84 | 65.40 | 72.29 | 72.37 | 64.93 | 50.15 | 42.12 | 38.95 | 52.33 | |||||||||||||
1970 | 33.15 | 40.00 | 38.52 | 43.88 | 57.48 | 67.13 | 71.71 | 69.90 | 62.23 | 48.19 | 43.38 | 36.97 | 51.05 | |||||||||||||
1971 | 33.65 | 36.54 | 42.08 | 47.62 | 53.92 | 66.22 | 73.53 | 67.48 | 63.85 | 48.81 | 42.10 | 32.89 | 50.72 | |||||||||||||
1972 | 35.84 | 39.48 | 48.63 | 49.23 | 57.69 | 65.72 | 71.94 | 68.24 | 63.10 | 54.42 | 37.85 | 34.84 | 52.25 | |||||||||||||
1973 | 32.15 | 36.75 | 37.24 | 44.83 | 57.79 | 65.78 | 70.56 | 69.47 | 63.83 | 55.89 | 43.38 | 36.35 | 51.17 | |||||||||||||
1974 | 36.74 | 35.66 | 45.00 | 48.78 | 59.19 | 71.87 | 71.08 | 68.56 | 62.78 | 54.77 | 42.88 | 33.56 | 52.57 | |||||||||||||
1975 | 34.74 | 35.52 | 40.29 | 42.87 | 54.02 | 65.43 | 70.40 | 70.24 | 63.17 | 54.53 | 42.18 | 36.95 | 50.86 | |||||||||||||
1976 | 34.53 | 41.95 | 41.15 | 48.30 | 57.56 | 67.32 | 70.77 | 69.89 | 62.98 | 50.94 | 42.63 | 36.13 | 52.01 | |||||||||||||
1977 | 35.02 | 39.98 | 38.26 | 50.05 | ----- | z | 68.57 | 71.48 | 71.16 | 65.32 | 56.84 | 44.90 | 40.32 | 52.90 | a | |||||||||||
1978 | 37.08 | 38.14 | 46.23 | 49.65 | 56.77 | 68.27 | 73.27 | 68.92 | 63.73 | 57.37 | 43.95 | 33.56 | 53.08 | |||||||||||||
1979 | 31.42 | 36.57 | 41.47 | 49.60 | 56.34 | 66.87 | 71.31 | 66.98 | 67.43 | 57.82 | 38.57 | 38.21 | 51.88 | |||||||||||||
1980 | 37.47 | 40.19 | 39.71 | 49.03 | 54.35 | a | 69.02 | 73.02 | b | 68.00 | 64.00 | 52.21 | 41.83 | 40.80 | a | 52.47 | ||||||||||
1981 | 38.63 | a | 38.95 | 39.65 | 51.70 | 56.95 | 69.62 | 72.08 | 70.37 | 65.37 | 52.34 | 44.28 | 38.93 | a | 53.24 | |||||||||||
1982 | 32.74 | b | 38.31 | b | 40.46 | c | 48.53 | a | 55.71 | b | 65.22 | a | 70.90 | 69.71 | 65.28 | a | 52.38 | a | 41.27 | 33.38 | b | 51.16 | ||||
1983 | 35.76 | 38.08 | b | 40.71 | 43.90 | a | 55.97 | a | 65.00 | b | 70.83 | b | 70.02 | 67.58 | 54.38 | c | 42.19 | a | 36.83 | d | 51.77 | |||||
1984 | 36.26 | 36.60 | 42.05 | 46.50 | a | 61.28 | a | 66.83 | 71.00 | 68.95 | a | 64.56 | c | 49.33 | a | 41.65 | 36.38 | a | 51.78 | |||||||
1985 | 34.20 | a | 33.98 | 41.72 | a | 51.36 | a | 59.20 | c | 68.98 | 73.21 | 70.66 | 61.10 | a | 53.42 | a | 41.42 | 35.92 | 52.10 | |||||||
1986 | 39.79 | 39.44 | a | 45.90 | 50.69 | a | 58.40 | a | 68.36 | b | 69.22 | a | 71.26 | 61.18 | b | 51.35 | a | 42.62 | 36.10 | 52.86 | ||||||
1987 | 33.98 | e | 37.46 | b | 39.27 | i | 51.39 | g | 57.10 | b | 68.72 | c | 69.73 | a | 68.97 | b | 62.87 | c | 58.78 | b | 41.11 | b | 32.79 | g | 55.41 | c |
1988 | 33.17 | j | 41.37 | j | 42.26 | d | 48.22 | e | 58.54 | d | 69.79 | a | 72.45 | b | 69.80 | d | 59.46 | b | 54.37 | a | 41.12 | 33.95 | b | 54.99 | b | |
1989 | 31.92 | g | 39.45 | f | 44.93 | c | 53.34 | e | 57.97 | 66.05 | a | 71.41 | b | 68.15 | 63.88 | 52.11 | 41.70 | 32.42 | a | 55.20 | b | |||||
1990 | 31.07 | b | 34.28 | e | 42.83 | d | 51.10 | a | 56.40 | 71.93 | a | 70.02 | 66.89 | 65.92 | 53.58 | 43.70 | 32.08 | a | 51.65 | |||||||
1991 | 34.69 | 41.07 | 37.33 | a | 47.53 | 56.82 | a | 64.68 | 71.48 | 69.58 | 63.33 | a | 56.05 | a | 41.02 | a | 36.16 | b | 51.65 | |||||||
1992 | 29.98 | a | 39.46 | c | 43.22 | a | 52.97 | a | 58.74 | 64.78 | 70.63 | 69.15 | 65.07 | 56.29 | 36.95 | 33.18 | a | 51.70 | ||||||||
1993 | 37.87 | d | 37.93 | 44.42 | 50.58 | 60.84 | 67.89 | c | 70.67 | a | 70.84 | 63.66 | a | 49.92 | 40.06 | c | 35.72 | b | 52.53 | |||||||
1994 | 36.45 | 36.59 | 44.40 | b | 50.92 | 58.12 | a | 71.76 | a | 73.69 | 73.44 | 66.11 | b | 53.02 | 40.48 | a | 38.16 | 53.59 | ||||||||
1995 | 36.07 | b | 43.48 | a | 44.57 | a | 47.07 | 54.58 | a | 66.18 | 72.24 | 74.13 | a | 66.05 | 56.39 | 47.62 | a | 37.35 | 53.81 | |||||||
1996 | 37.21 | 42.78 | 43.10 | 51.07 | a | 61.90 | 71.62 | 72.87 | 70.81 | 61.31 | a | 52.63 | 43.05 | 35.97 | 53.69 | |||||||||||
1997 | 32.18 | 36.91 | a | 44.82 | 47.24 | a | 61.85 | 67.64 | b | 72.31 | 71.19 | b | 69.07 | 51.21 | 42.46 | b | 31.84 | c | 52.39 | |||||||
1998 | 36.18 | 34.52 | ----- | z | 45.47 | 56.63 | 64.42 | 73.11 | c | 71.78 | b | 67.88 | a | 53.83 | a | 44.36 | a | 35.67 | a | 53.08 | a | |||||
1999 | 36.28 | b | 40.29 | b | 45.68 | 46.90 | a | 59.03 | a | ----- | z | 71.19 | 71.11 | 65.83 | 66.46 | d | 50.05 | h | 34.68 | f | 55.86 | c | ||||
2000 | 38.26 | f | 42.58 | e | 43.12 | c | 53.07 | b | 63.55 | a | 69.68 | 73.23 | a | 70.83 | e | 67.30 | g | 52.77 | c | 37.58 | f | 40.20 | i | 58.61 | d | |
2001 | 33.84 | i | 38.55 | g | 44.57 | d | 51.69 | i | 60.08 | f | 67.94 | f | 70.54 | d | 69.35 | a | 66.64 | a | 56.89 | 44.79 | a | 32.11 | d | 54.98 | e | |
2002 | 35.17 | m | 37.29 | g | 40.37 | h | 54.84 | a | 57.88 | b | 70.66 | a | 72.97 | 69.50 | 64.28 | 51.97 | b | 45.02 | d | 34.54 | e | 57.96 | c | |||
2003 | 43.43 | d | 38.69 | j | 40.04 | g | 48.08 | f | 58.66 | b | 67.29 | a | 75.12 | b | 71.37 | 65.75 | 59.93 | b | 42.86 | h | 37.84 | i | 63.08 | e | ||
2004 | 37.45 | j | 33.32 | g | 48.94 | g | 48.90 | d | 59.02 | a | 66.87 | 69.33 | b | 68.38 | c | 62.48 | c | 52.57 | c | 40.19 | i | 35.73 | i | 61.08 | e | |
2005 | 37.02 | h | 39.58 | j | 42.25 | i | 48.31 | c | 58.71 | b | 66.28 | 72.48 | 68.05 | k | 66.50 | x | 54.78 | m | 45.63 | k | 38.31 | o | 61.45 | h | ||
2006 | 38.32 | n | 41.06 | j | 39.87 | h | 51.79 | f | ----- | z | 70.72 | 72.66 | 66.48 | b | 61.11 | c | 52.14 | f | 46.63 | c | 35.89 | h | 63.52 | g | ||
2007 | 31.21 | n | 36.82 | k | 45.22 | f | ----- | z | 59.53 | b | ----- | z | ----- | z | ----- | z | 65.25 | 54.26 | d | 50.79 | i | 35.11 | l | 59.68 | i | |
2008 | 32.74 | j | 39.36 | o | ----- | z | 49.12 | a | 55.02 | 67.98 | a | 69.98 | 68.89 | 63.72 | 54.80 | c | 46.17 | g | 38.74 | d | 58.53 | d | ||||
2009 | ----- | z | 40.19 | g | 45.71 | c | 48.57 | 61.08 | 64.33 | a | 73.43 | c | 70.48 | a | ----- | z | 51.68 | ----- | z | ----- | z | 59.33 | e | |||
2010 | 35.90 | 35.50 | 40.40 | e | 48.84 | a | 55.03 | b | ----- | z | 71.83 | a | 70.98 | e | 67.04 | f | 56.20 | c | 41.17 | 41.13 | e | 49.70 | b | |||
2011 | 33.02 | a | 34.62 | 45.48 | a | 51.60 | a | 54.73 | 68.64 | b | 73.13 | ----- | z | 65.72 | a | ----- | z | 41.60 | 31.59 | c | 50.01 | b | ||||
2012 | 38.08 | a | 36.91 | a | 41.65 | 51.76 | a | 58.41 | d | ----- | z | 71.43 | a | 70.84 | ----- | z | 55.12 | b | ----- | z | ----- | z | 53.02 | d | ||
2013 | 31.69 | 32.57 | g | 46.20 | a | 47.95 | 56.61 | ----- | z | 68.05 | j | 69.69 | 63.03 | 51.35 | 43.10 | 35.13 | 49.42 | c | ||||||||
2014 | 38.69 | 41.18 | 44.65 | a | 48.72 | 56.76 | 67.77 | 67.73 | 67.31 | ----- | z | 55.60 | a | 55.41 | b | 37.53 | 52.85 | a | ||||||||
2015 | 37.60 | 43.16 | 45.45 | 48.02 | 54.24 | 69.42 | 69.76 | 71.32 | 65.45 | 56.27 | 42.10 | 34.73 | 53.13 | |||||||||||||
2016 | 33.03 | 41.10 | 46.53 | 47.88 | 54.53 | 70.43 | a | 71.94 | 67.58 | 62.73 | 57.68 | 44.42 | 37.50 | 52.95 | ||||||||||||
2017 | 34.05 | a | 40.71 | 47.03 | 49.87 | 56.56 | 70.68 | 72.05 | 68.56 | 63.92 | 56.45 | 50.77 | 38.74 | 54.12 | ||||||||||||
2018 | 38.65 | 39.95 | 42.25 | a | 52.75 | 60.11 | 69.57 | a | 71.74 | 71.47 | 67.57 | 52.23 | 40.42 | 36.35 | 53.59 | |||||||||||
2019 | 33.44 | 32.94 | c | ----- | z | 49.97 | 52.08 | 66.87 | 66.87 | a | ----- | z | 64.33 | c | ----- | z | 44.83 | 36.00 | 49.70 | c | ||||||
2020 | 47.58 | 38.97 | 42.56 | 49.90 | a | ----- | z | ----- | z | ----- | z | ----- | z | 66.57 | 59.29 | ----- | z | ----- | z | 50.81 | f | |||||
2021 | ----- | z | 38.09 | a | 41.66 | 51.21 | a | 59.38 | a | 72.20 | 71.50 | 69.54 | c | 64.96 | d | 52.84 | b | 48.71 | a | 40.39 | 55.50 | a | ||||
2022 | 35.82 | a | 35.08 | b | 35.08 | e | 50.73 | 59.48 | a | 68.91 | b | 73.22 | a | 69.65 | a | 66.28 | a | 53.07 | c | ----- | z | 35.97 | a | 53.03 | a | |
2023 | 31.56 | d | 34.13 | e | 39.39 | c | 50.38 | 58.09 | b | 64.02 | 76.65 | ----- | z | 66.72 | e | 56.47 | b | 45.36 | b | 37.91 | b | 50.97 | a | |||
2024 | 32.67 | h | 37.88 | e | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 37.88 | k |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 35.11 | 37.72 | 42.25 | 49.48 | 57.79 | 67.88 | 71.93 | 69.82 | 64.71 | 54.62 | 43.09 | 35.77 | 52.37 | |||||||||||||
S.D. | 3.38 | 3.49 | 3.09 | 2.53 | 2.43 | 2.37 | 1.66 | 1.69 | 2.11 | 2.98 | 3.09 | 2.66 | 0.86 | |||||||||||||
SKEW | 0.70 | -0.24 | -0.41 | -0.07 | 0.01 | 0.12 | -0.21 | -0.01 | -0.01 | 0.68 | 1.13 | 0.07 | -0.06 | |||||||||||||
MAX | 47.58 | 45.69 | 48.63 | 55.62 | 63.55 | 72.20 | 76.65 | 74.13 | 69.07 | 66.46 | 55.41 | 41.13 | 54.12 | |||||||||||||
MIN | 28.03 | 28.46 | 34.27 | 42.87 | 52.08 | 63.02 | 66.87 | 65.60 | 59.46 | 48.19 | 36.95 | 30.73 | 50.72 | |||||||||||||
YRS | 60 | 61 | 62 | 66 | 68 | 66 | 69 | 66 | 67 | 69 | 62 | 62 | 43 |