YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1950 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 36.39 | h | ----- | z |
1951 | 26.55 | 36.02 | 37.02 | 48.65 | 56.05 | 61.27 | 73.17 | a | 68.53 | 61.07 | 46.71 | 35.77 | 25.77 | 48.05 | ||||||||||||
1952 | 20.73 | 30.90 | 35.98 | ----- | z | 57.74 | 63.30 | 72.04 | g | 70.64 | b | 62.62 | 52.88 | a | 30.29 | d | 32.13 | h | 47.23 | c | ||||||
1953 | 41.48 | e | 38.81 | d | 42.02 | j | 47.55 | b | 52.31 | m | 58.43 | c | 71.81 | b | 69.04 | g | 62.47 | l | 51.50 | l | ----- | z | 30.94 | w | 51.62 | g |
1954 | 36.48 | a | 39.96 | d | 36.28 | o | 51.32 | b | 60.77 | e | 63.57 | h | 72.20 | d | 66.94 | 59.53 | a | 48.26 | d | 42.52 | f | 28.77 | e | 51.58 | c | |
1955 | 27.17 | a | 30.58 | c | 39.14 | c | 44.02 | d | 55.97 | b | 66.48 | a | 68.00 | i | 70.32 | c | 60.90 | d | 50.18 | i | 36.92 | e | 35.27 | a | 46.68 | b |
1956 | 33.67 | e | 28.79 | c | 42.46 | g | 46.84 | b | 48.69 | w | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 29.00 | e | 34.58 | h |
1957 | 22.80 | a | 36.95 | 43.03 | b | ----- | z | ----- | z | ----- | z | ----- | z | 66.91 | d | 62.25 | f | 49.00 | v | 34.98 | b | 33.82 | l | 40.93 | g | |
1958 | ----- | z | ----- | z | ----- | z | 44.74 | e | 62.31 | e | 64.75 | j | 69.94 | d | 72.98 | i | 59.06 | c | 51.93 | a | 45.93 | o | 37.70 | h | 57.60 | g |
1959 | 32.57 | c | 32.71 | 37.80 | c | 49.43 | a | 50.87 | e | 65.47 | a | 72.02 | 66.50 | 62.67 | l | 50.06 | 36.08 | 23.82 | 47.03 | a | ||||||
1960 | 22.12 | a | 33.35 | b | 42.90 | 47.94 | d | 53.02 | 64.45 | b | 74.53 | 65.06 | d | 60.68 | b | ----- | z | 38.02 | b | 27.83 | d | 48.17 | a | |||
1961 | 29.38 | a | 40.02 | a | 42.17 | h | 45.23 | b | 54.31 | e | 67.91 | a | 71.15 | 73.96 | d | 55.33 | a | 48.60 | 35.54 | c | 31.40 | b | 50.26 | a | ||
1962 | ----- | z | 34.48 | d | 38.00 | d | ----- | z | 54.50 | a | 64.67 | c | 69.77 | a | 67.70 | d | 61.83 | 50.05 | 40.93 | 32.77 | 51.47 | b | ||||
1963 | 25.94 | 41.57 | 39.48 | 42.25 | 56.83 | b | 60.08 | 68.77 | 68.76 | 65.00 | 53.55 | 40.03 | 29.27 | a | 49.29 | |||||||||||
1964 | 29.52 | 32.60 | ----- | z | 44.45 | ----- | z | 61.36 | a | 72.74 | 67.35 | 56.68 | 51.66 | 36.33 | 33.97 | b | 48.67 | b | ||||||||
1965 | 31.31 | 37.48 | a | 38.18 | a | 50.27 | 52.90 | a | 62.33 | a | 69.39 | 67.81 | 53.93 | 52.45 | 41.47 | a | 28.26 | b | 48.81 | |||||||
1966 | 31.89 | 32.59 | 41.35 | a | 47.13 | 59.86 | c | 62.98 | 71.33 | a | 72.07 | q | ----- | z | 46.90 | f | 41.58 | 31.16 | 46.65 | c | ||||||
1967 | 34.12 | a | 37.50 | c | 39.42 | 40.52 | b | 54.72 | a | 61.88 | a | 75.06 | 74.23 | c | ----- | z | 47.76 | b | 40.37 | c | 28.33 | a | 48.54 | a | ||
1968 | 28.81 | 40.76 | ----- | z | 43.68 | b | 55.13 | 64.97 | 74.44 | 66.18 | a | 60.18 | ----- | z | 38.91 | b | 31.29 | c | 50.43 | b | ||||||
1969 | 32.02 | c | 33.66 | 39.64 | b | 49.19 | a | 61.10 | a | 62.64 | a | 72.02 | 70.22 | a | 60.95 | 44.68 | 36.33 | 31.83 | d | 49.52 | ||||||
1970 | 33.68 | 38.83 | a | 39.27 | a | 40.67 | 54.74 | 66.92 | 73.31 | 72.13 | a | 55.84 | b | 44.89 | 39.05 | b | 29.02 | f | 50.85 | a | ||||||
1971 | 34.10 | a | 34.63 | a | 35.08 | 43.35 | c | 54.56 | 60.67 | j | 71.02 | b | 72.73 | 54.22 | a | 46.56 | 36.88 | d | 27.93 | a | 46.46 | a | ||||
1972 | 27.71 | c | 33.70 | f | 42.69 | 42.68 | 57.58 | 64.92 | 70.21 | 70.57 | b | 56.20 | 50.13 | a | 37.98 | a | 26.88 | c | 49.78 | a | ||||||
1973 | 27.84 | 36.68 | 38.98 | a | 45.59 | a | 58.48 | a | ----- | z | 74.58 | 69.22 | a | 59.84 | a | 50.16 | b | ----- | z | 36.57 | a | 49.79 | b | |||
1974 | 27.89 | h | 36.48 | 40.15 | 45.57 | a | 54.60 | 69.36 | b | 72.16 | 69.18 | 60.78 | 49.08 | 39.05 | 31.71 | 51.65 | a | |||||||||
1975 | 27.45 | 36.34 | c | 39.48 | c | 40.64 | a | 52.69 | 62.14 | b | 76.08 | 67.47 | a | 60.07 | g | 47.69 | 37.33 | c | 36.30 | d | 47.60 | a | ||||
1976 | 32.72 | a | 34.50 | 35.00 | 45.94 | c | 57.79 | b | 62.14 | b | 72.71 | 64.40 | 61.77 | 48.15 | a | 40.47 | 25.95 | 48.46 | ||||||||
1977 | 18.94 | 34.56 | a | 36.42 | 50.95 | 52.29 | b | 70.26 | a | 71.32 | 70.89 | 60.67 | 50.40 | a | 39.55 | a | 36.67 | a | 49.41 | |||||||
1978 | 33.88 | a | 38.38 | b | 47.29 | c | 47.37 | ----- | z | 62.40 | a | 71.37 | 69.06 | 57.32 | 50.42 | a | 34.63 | 27.07 | b | 49.02 | a | |||||
1979 | 19.26 | 34.61 | 42.05 | 46.91 | a | 56.50 | b | 65.16 | a | 72.50 | c | 69.43 | a | 64.02 | 51.57 | a | 33.18 | 32.39 | 48.96 | |||||||
1980 | 30.94 | 37.76 | 38.18 | 50.07 | 54.84 | b | 60.63 | 72.44 | 66.94 | 61.73 | b | 49.87 | a | 38.62 | a | 31.00 | c | 49.42 | ||||||||
1981 | 32.32 | c | 36.16 | 40.78 | d | 48.73 | 53.48 | a | 64.25 | b | 70.02 | 71.55 | 61.22 | 46.87 | 40.42 | 35.48 | a | 50.11 | ||||||||
1982 | 27.37 | a | 32.70 | a | 40.03 | b | 43.50 | 53.57 | a | 64.25 | d | 68.95 | a | 70.18 | 57.91 | a | 46.98 | b | 31.02 | 30.07 | b | 47.21 | ||||
1983 | 33.62 | a | 39.95 | 41.30 | c | 44.10 | 54.67 | a | 61.32 | 67.02 | c | 70.92 | a | 59.31 | a | 51.21 | b | 40.74 | c | 28.16 | b | 49.36 | ||||
1984 | 18.75 | c | 29.25 | i | 43.21 | e | 44.00 | a | 56.32 | c | 60.33 | a | 73.04 | e | 70.52 | a | 57.27 | f | 45.64 | b | 38.11 | b | 23.50 | c | 47.34 | b |
1985 | 23.35 | a | 27.31 | a | 35.23 | 50.45 | b | 57.72 | a | 65.48 | 76.13 | 68.41 | b | ----- | z | 47.00 | c | 30.29 | b | 15.34 | c | 45.15 | a | |||
1986 | 29.57 | a | 42.34 | c | 46.45 | b | 47.73 | d | 56.26 | 69.65 | 69.07 | b | 73.64 | c | 55.93 | a | 48.28 | a | 39.33 | 27.98 | a | 50.52 | ||||
1987 | 27.11 | c | 36.15 | e | 38.17 | k | 53.88 | 60.67 | b | 67.73 | 68.57 | a | 68.44 | 62.53 | a | 52.08 | 36.82 | b | 29.61 | c | 51.24 | a | ||||
1988 | 27.31 | 37.54 | b | 42.55 | 51.36 | e | 57.79 | c | 69.59 | b | 74.92 | 69.82 | 60.18 | 56.65 | 39.05 | a | 27.89 | d | 51.22 | |||||||
1989 | 27.35 | d | 28.67 | d | 44.93 | d | 54.93 | g | 54.65 | g | 66.43 | a | 73.10 | k | 68.23 | 61.38 | 49.05 | 37.09 | b | 27.84 | b | 45.66 | c | |||
1990 | 31.48 | c | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 37.93 | 21.37 | 30.26 | i | ||
1991 | 26.92 | a | 39.54 | 39.92 | a | 46.73 | 52.33 | b | 60.16 | b | 72.06 | d | 72.00 | b | 62.54 | d | 49.71 | b | 38.69 | a | 29.74 | 49.19 | ||||
1992 | 32.34 | 39.82 | a | 44.47 | 51.22 | c | 62.24 | d | 66.05 | a | 69.07 | b | 70.60 | a | 59.50 | a | 50.53 | b | 34.09 | a | 28.05 | b | 50.67 | |||
1993 | 19.95 | b | 25.79 | 42.27 | c | 46.88 | b | 58.08 | f | 58.91 | c | 63.87 | a | 64.18 | a | 59.78 | 49.68 | 29.24 | a | 31.42 | 44.72 | a | ||||
1994 | 32.74 | 31.57 | a | 43.80 | a | 50.85 | 58.02 | a | 64.66 | a | 72.43 | a | 71.31 | 61.69 | a | 47.68 | 32.28 | a | 25.81 | 49.40 | ||||||
1995 | 34.40 | 41.34 | 39.84 | 44.50 | a | 54.05 | 60.03 | a | 68.52 | 65.48 | a | 61.03 | 47.30 | d | 44.24 | c | 32.80 | a | 49.46 | |||||||
1996 | 32.62 | a | 34.77 | a | 42.43 | a | 48.48 | 53.65 | 64.75 | h | 74.50 | x | 69.06 | e | 58.40 | 49.42 | 41.06 | f | 32.77 | g | 48.60 | d | ||||
1997 | 32.37 | 36.27 | 43.72 | b | 45.52 | 58.50 | 62.37 | 69.15 | 69.55 | 61.72 | 47.32 | 40.93 | ----- | z | 51.58 | a | ||||||||||
1998 | 36.29 | 35.68 | 41.73 | a | 47.50 | a | 52.90 | b | 59.55 | a | 74.08 | 71.87 | a | 65.47 | 46.65 | 40.57 | b | 26.56 | 49.90 | |||||||
1999 | 32.22 | a | 37.35 | a | 40.90 | a | 45.52 | 54.48 | b | 63.98 | a | 69.90 | 69.05 | 58.55 | 49.69 | b | 42.19 | a | 29.40 | a | 49.44 | |||||
2000 | 33.63 | 38.42 | e | 41.76 | 53.14 | e | 59.17 | a | 65.93 | 71.95 | 70.29 | 58.97 | 48.88 | a | 31.86 | a | 29.37 | a | 50.28 | |||||||
2001 | 25.15 | 32.00 | a | 44.73 | 45.83 | a | 58.71 | 64.68 | b | 70.61 | 72.77 | 62.45 | 51.30 | a | 39.12 | 30.58 | a | 49.83 | ||||||||
2002 | 31.27 | 34.79 | 39.56 | 48.23 | 56.33 | a | 65.97 | 75.40 | 66.21 | 59.90 | 44.00 | 36.47 | 33.78 | b | 49.33 | |||||||||||
2003 | 37.39 | 34.33 | a | 45.65 | a | 45.63 | 57.15 | a | 66.02 | 76.15 | 71.87 | 61.98 | 54.92 | a | 35.96 | b | 34.08 | a | 51.76 | |||||||
2004 | 26.98 | a | 34.21 | a | 45.82 | 51.50 | 55.38 | b | 65.93 | a | 73.06 | d | 70.59 | c | 59.60 | 49.35 | 36.57 | 32.33 | b | 50.11 | ||||||
2005 | 31.03 | b | 34.78 | a | 41.74 | 47.02 | 55.50 | 60.10 | 73.76 | b | 71.52 | a | 58.77 | 49.57 | h | 35.72 | a | 27.95 | 48.90 | a | ||||||
2006 | 34.67 | a | 33.23 | 37.32 | a | 47.41 | a | 57.42 | 67.91 | b | 76.53 | a | 68.72 | a | 60.14 | b | 47.48 | 38.22 | c | 27.42 | f | 51.73 | a | |||
2007 | 24.34 | f | 37.00 | 46.33 | a | 49.57 | 59.82 | 66.73 | 78.06 | 72.28 | a | 59.63 | 48.69 | b | 37.67 | a | 26.95 | b | 52.98 | a | ||||||
2008 | 27.23 | a | 36.66 | j | 39.45 | 44.14 | a | 57.34 | 64.22 | 73.45 | a | 71.30 | a | 60.50 | 48.35 | 40.75 | b | 29.10 | a | 50.53 | a | |||||
2009 | 32.52 | b | 34.88 | 41.04 | d | 47.91 | a | 60.42 | 64.43 | 72.85 | 71.13 | l | 64.75 | d | 45.39 | 37.53 | 24.60 | 47.85 | a | |||||||
2010 | 36.44 | 37.96 | 42.35 | 46.12 | a | 51.98 | a | 63.14 | a | 72.55 | b | 67.90 | e | 61.19 | a | 53.03 | 36.42 | 31.66 | 50.06 | |||||||
2011 | 28.85 | a | 33.45 | 40.37 | 42.92 | 49.48 | 58.41 | b | 69.45 | c | 70.53 | 63.30 | 49.57 | a | ----- | z | 26.50 | 48.44 | a | |||||||
2012 | 31.58 | 34.16 | 42.07 | a | 49.57 | a | 54.50 | 62.17 | 74.17 | b | 70.56 | 61.72 | 48.08 | 39.95 | 30.00 | 49.88 | ||||||||||
2013 | 15.55 | 34.54 | 42.35 | 47.07 | a | 55.27 | 64.98 | 75.31 | 70.90 | 62.22 | 44.79 | 37.43 | a | 24.55 | 47.91 | |||||||||||
2014 | 31.42 | 38.41 | 43.14 | b | 47.53 | 57.27 | 63.87 | 74.82 | c | 70.79 | b | 62.22 | 52.77 | 37.52 | 35.00 | a | 51.23 | |||||||||
2015 | 31.71 | 40.93 | 46.63 | 46.56 | d | 54.88 | f | 72.40 | o | 70.91 | i | 69.71 | 61.65 | d | 55.16 | 36.44 | d | 31.08 | 46.65 | c | ||||||
2016 | 28.77 | 37.79 | 43.38 | a | 49.95 | b | 55.63 | a | 67.42 | 69.97 | 68.88 | a | 59.37 | 49.92 | 40.47 | 20.98 | 49.38 | |||||||||
2017 | 19.08 | 33.48 | a | 44.55 | 45.82 | 55.26 | 64.55 | 74.52 | 71.42 | 60.02 | 45.37 | a | 39.53 | 24.48 | e | 48.17 | ||||||||||
2018 | 35.68 | 33.05 | 40.13 | 47.82 | 57.90 | a | 64.03 | 73.32 | 68.92 | 58.72 | 47.84 | 34.30 | ----- | z | 51.06 | a | ||||||||||
2019 | 31.88 | b | 30.29 | 38.94 | 48.93 | 52.61 | 60.84 | e | 70.40 | 70.27 | 59.58 | 40.94 | 34.93 | 31.18 | 47.57 | |||||||||||
2020 | 34.11 | 34.81 | 39.89 | 45.80 | 56.05 | 64.52 | 70.24 | 70.78 | a | 61.40 | 49.45 | 35.22 | ----- | z | 51.12 | a | ||||||||||
2021 | 31.91 | d | 36.00 | c | 39.15 | 46.30 | 54.39 | 68.87 | 75.16 | 69.02 | 59.75 | 49.89 | 40.55 | ----- | z | 51.91 | a | |||||||||
2022 | ----- | z | 32.25 | b | 42.81 | 44.93 | 52.15 | g | 64.02 | 72.73 | p | 74.53 | 63.40 | a | 50.06 | 28.48 | c | 25.03 | a | 47.28 | c | |||||
2023 | 29.45 | 31.29 | 35.13 | 44.63 | 58.11 | 60.61 | c | 74.02 | 70.00 | q | 58.63 | k | 49.46 | e | 36.12 | d | 32.60 | 45.14 | b | |||||||
2024 | 31.38 | c | 37.02 | b | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 34.20 | j |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 29.69 | 35.41 | 41.01 | 46.89 | 56.07 | 64.00 | 72.17 | 69.66 | 60.30 | 49.12 | 37.28 | 29.26 | 49.48 | |||||||||||||
S.D. | 5.09 | 3.46 | 3.02 | 2.92 | 2.76 | 2.91 | 2.60 | 2.29 | 2.42 | 2.80 | 3.24 | 4.03 | 1.05 | |||||||||||||
SKEW | -0.72 | -0.33 | -0.03 | 0.03 | 0.20 | 0.09 | -0.34 | -0.24 | -0.50 | 0.04 | -0.70 | -0.59 | -0.08 | |||||||||||||
MAX | 41.48 | 42.34 | 47.29 | 53.88 | 62.31 | 70.26 | 78.06 | 74.53 | 65.47 | 56.65 | 44.24 | 36.67 | 51.76 | |||||||||||||
MIN | 15.55 | 25.79 | 35.00 | 40.52 | 49.48 | 58.41 | 63.87 | 64.18 | 53.93 | 40.94 | 28.48 | 15.34 | 47.21 | |||||||||||||
YRS | 69 | 69 | 64 | 68 | 63 | 64 | 64 | 66 | 62 | 64 | 66 | 62 | 31 |