YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1947 | ----- | z | ----- | z | ----- | z | 45.72 | 56.10 | 57.82 | 65.45 | 62.58 | 54.95 | 49.67 | a | 35.25 | 33.61 | 51.24 | c | ||||||||
1948 | 28.08 | 31.14 | 35.12 | a | 43.02 | a | 51.13 | a | 62.18 | 61.28 | b | 62.06 | 55.53 | 43.66 | 36.08 | 25.40 | 44.56 | |||||||||
1949 | 14.35 | 27.82 | 35.45 | 45.77 | 54.34 | 59.70 | 64.32 | ----- | z | 54.53 | a | 42.00 | 40.62 | 30.24 | 42.65 | a | ||||||||||
1950 | 14.11 | 29.64 | 34.70 | a | 41.67 | 49.18 | 57.96 | c | 63.66 | b | 63.50 | a | 55.57 | 45.29 | 36.59 | a | 34.32 | 43.85 | ||||||||
1951 | 29.21 | 32.48 | ----- | z | 44.83 | 51.63 | 57.05 | 65.00 | 64.03 | 56.42 | 45.21 | 36.62 | 25.32 | 46.16 | a | |||||||||||
1952 | 27.53 | 30.21 | 36.35 | 45.70 | 52.97 | 58.84 | a | 65.74 | f | 64.48 | 59.30 | 48.62 | a | 33.38 | 32.71 | 44.55 | a | |||||||||
1953 | 38.50 | 35.36 | 38.52 | 42.98 | 50.13 | a | 55.57 | 65.31 | 64.55 | 57.47 | 47.97 | 40.14 | b | 34.90 | 47.62 | |||||||||||
1954 | 27.87 | 34.88 | 32.87 | h | 43.32 | 51.06 | 54.65 | 64.21 | 60.52 | 54.70 | 41.68 | 40.29 | b | 30.81 | 45.82 | a | ||||||||||
1955 | 29.27 | 25.84 | i | 31.30 | c | 39.68 | 48.06 | 58.22 | 61.60 | 63.34 | 55.17 | 46.00 | a | 30.14 | a | 27.84 | 44.60 | a | ||||||||
1956 | 28.34 | c | 23.88 | 34.24 | b | 44.60 | 51.74 | 57.10 | 65.23 | 62.11 | 55.13 | 44.50 | 33.10 | f | 33.47 | n | 46.69 | b | ||||||||
1957 | 18.50 | 28.07 | 35.31 | 43.97 | 55.13 | 59.32 | 62.16 | 59.97 | 55.85 | 44.75 | a | 34.42 | 35.15 | 44.38 | ||||||||||||
1958 | 31.53 | 37.11 | 36.40 | a | 42.85 | 58.27 | 61.30 | 65.27 | 68.35 | 55.80 | b | 45.61 | 34.63 | 33.21 | b | 47.53 | ||||||||||
1959 | 29.82 | 29.50 | 36.84 | 43.33 | a | 46.92 | 58.00 | 57.75 | o | 59.97 | 51.55 | 43.75 | a | 30.83 | 31.72 | a | 42.02 | a | ||||||||
1960 | 24.11 | c | 30.02 | 34.85 | 40.73 | b | 46.94 | 57.78 | 67.08 | a | 61.02 | 53.85 | 44.13 | a | 34.93 | 28.50 | 43.66 | |||||||||
1961 | 30.94 | 36.82 | 37.15 | 42.10 | 48.07 | a | 59.29 | a | 67.15 | a | 68.76 | 52.97 | 43.33 | a | 30.72 | 28.05 | 45.44 | |||||||||
1962 | 23.89 | 31.26 | a | 32.87 | a | 45.45 | 48.13 | 55.45 | k | 61.71 | 61.19 | 54.53 | 45.98 | 38.98 | 33.77 | 43.43 | a | |||||||||
1963 | 19.40 | 34.86 | 37.56 | 41.50 | 50.82 | 58.07 | 61.10 | 62.18 | 56.57 | 46.79 | 37.25 | 27.21 | 44.44 | |||||||||||||
1964 | 29.37 | 28.67 | 32.68 | a | 41.45 | 49.32 | 58.42 | 63.11 | 57.95 | 50.58 | 44.18 | 35.07 | 26.42 | a | 43.10 | |||||||||||
1965 | 32.11 | 30.80 | 30.31 | 43.67 | a | 50.40 | a | 58.17 | 63.74 | 63.65 | 50.05 | h | 46.13 | a | 38.98 | 32.37 | 44.58 | a | ||||||||
1966 | 29.53 | 31.29 | 37.08 | a | 43.13 | 52.81 | 55.77 | b | 64.10 | 63.16 | 59.20 | 45.28 | a | 36.45 | 33.62 | a | 45.95 | |||||||||
1967 | 33.44 | 33.80 | 35.52 | 40.80 | 51.05 | 60.43 | 66.23 | 66.97 | 60.17 | 44.78 | a | 35.48 | 29.07 | a | 46.48 | |||||||||||
1968 | 28.65 | 34.29 | 38.58 | 41.80 | 50.52 | 58.17 | 64.10 | 61.47 | 53.80 | 42.02 | 35.05 | 26.32 | 44.56 | |||||||||||||
1969 | 19.56 | 27.23 | 34.23 | 43.00 | 53.27 | 61.43 | a | 61.97 | 61.48 | 55.93 | 41.94 | 35.82 | 31.10 | 43.91 | ||||||||||||
1970 | 26.52 | 33.04 | a | 34.32 | 40.92 | 51.95 | a | 61.67 | 65.98 | 62.75 | a | 50.87 | 41.00 | 35.52 | 28.08 | 44.38 | ||||||||||
1971 | 29.92 | 31.02 | 33.85 | 42.07 | 51.90 | 55.43 | 62.95 | 66.21 | 49.90 | 41.79 | 36.02 | 27.85 | 44.08 | |||||||||||||
1972 | 23.48 | 30.75 | a | 38.15 | 41.45 | 52.53 | 57.38 | 62.94 | 65.32 | 52.82 | 41.73 | a | 35.93 | 26.98 | b | 44.12 | ||||||||||
1973 | 24.95 | 31.21 | 37.47 | 42.58 | 52.26 | 58.41 | a | 64.85 | 64.60 | 54.05 | 44.23 | 34.65 | 34.00 | a | 45.27 | |||||||||||
1974 | 25.69 | 33.32 | 36.15 | 44.00 | 48.24 | 62.63 | 64.00 | a | 63.17 | a | 54.90 | 43.17 | a | 37.55 | 32.48 | 45.44 | ||||||||||
1975 | 26.34 | 26.50 | a | 34.10 | 39.43 | a | 50.90 | e | 55.97 | 67.76 | 59.95 | 53.07 | 44.55 | 34.02 | a | 31.61 | 43.68 | |||||||||
1976 | 31.21 | 31.48 | 33.02 | 43.18 | 50.98 | 53.67 | a | 62.27 | 60.79 | 56.07 | 43.95 | 36.43 | 30.76 | 44.49 | ||||||||||||
1977 | 25.39 | 34.14 | 36.65 | 45.35 | 49.37 | 63.05 | k | 63.73 | 66.22 | a | 51.00 | 43.19 | 34.78 | 28.73 | 43.50 | a | ||||||||||
1978 | 29.08 | a | 34.16 | 39.03 | a | 44.17 | 50.21 | 59.30 | 64.55 | 61.81 | b | 54.07 | 44.05 | 31.78 | a | 23.95 | 44.68 | |||||||||
1979 | 15.76 | 30.00 | a | 36.98 | 42.22 | 51.68 | 58.88 | ----- | z | 64.30 | a | 56.44 | e | 47.43 | b | 33.31 | a | 34.97 | 42.91 | a | ||||||
1980 | 24.03 | 31.40 | 36.26 | 45.98 | 51.50 | s | ----- | z | ----- | z | 59.29 | 55.07 | 44.44 | 37.13 | 34.18 | 40.86 | c | |||||||||
1981 | 34.32 | 32.61 | 38.39 | 43.53 | a | 49.63 | 53.72 | 59.95 | 64.06 | ----- | z | 42.71 | 38.08 | 30.18 | 44.29 | a | ||||||||||
1982 | 24.57 | h | 23.50 | g | 37.65 | a | 39.66 | a | 49.00 | a | 60.37 | 60.18 | a | 62.14 | b | 53.76 | k | ----- | z | ----- | z | ----- | z | 51.50 | f | |
1983 | 34.77 | e | 35.73 | b | 39.63 | 42.28 | 52.11 | 56.30 | 58.47 | 64.22 | a | 51.60 | e | 43.17 | h | 40.19 | f | 22.69 | b | 45.78 | b | |||||
1984 | 29.02 | c | 33.87 | b | 38.81 | d | 44.17 | f | 46.82 | n | 55.25 | h | 64.60 | f | 65.17 | k | 52.77 | f | 42.06 | g | 36.36 | a | 23.38 | f | 34.52 | h |
1985 | 25.27 | a | 25.25 | 34.97 | 45.11 | b | 51.83 | a | ----- | z | 68.42 | k | 59.68 | 50.43 | a | 42.16 | 25.57 | 23.45 | 38.37 | b | ||||||
1986 | 30.42 | 30.46 | 39.89 | 42.43 | 51.31 | 61.35 | 60.10 | 65.53 | 51.27 | 44.44 | 35.27 | 29.62 | a | 45.17 | ||||||||||||
1987 | 28.10 | 33.82 | 38.34 | 46.82 | 53.89 | 58.93 | 63.08 | 58.73 | 55.60 | a | 43.66 | 39.08 | 29.55 | a | 45.80 | |||||||||||
1988 | 26.82 | ----- | z | 37.82 | 45.72 | 50.84 | 58.78 | 63.45 | 63.82 | a | 54.30 | 48.10 | 37.82 | 29.53 | 47.00 | a | ||||||||||
1989 | 30.53 | 21.45 | 34.27 | 44.70 | 49.55 | 60.68 | 63.84 | 61.05 | 54.00 | 45.05 | 37.97 | 32.00 | 44.59 | |||||||||||||
1990 | 33.52 | 29.14 | 36.19 | 46.60 | a | 48.76 | 56.68 | 65.26 | 64.76 | 58.80 | 44.11 | 37.48 | a | 21.38 | c | 45.22 | ||||||||||
1991 | 26.14 | c | 36.71 | 34.13 | 43.88 | a | 49.40 | 54.68 | 65.27 | 65.62 | a | 56.48 | 42.55 | 35.18 | 32.75 | a | 45.23 | |||||||||
1992 | 32.44 | 36.68 | a | 39.47 | 45.78 | 54.69 | 63.00 | 62.98 | 62.89 | 51.70 | 46.34 | 35.10 | 25.68 | 46.40 | ||||||||||||
1993 | 24.45 | 27.04 | 35.83 | a | 43.26 | a | 56.87 | 58.50 | 57.98 | 62.03 | 54.33 | 47.32 | 30.33 | 31.52 | 44.12 | |||||||||||
1994 | 35.03 | 28.15 | a | 37.40 | 47.16 | a | 53.21 | 56.08 | 66.88 | b | 66.66 | 58.25 | 45.50 | b | 33.14 | a | 30.08 | 46.46 | ||||||||
1995 | 30.88 | a | 34.91 | a | 36.52 | a | 43.10 | 54.18 | a | 58.12 | 65.02 | 59.37 | 56.88 | 42.81 | 39.87 | 30.60 | 46.02 | |||||||||
1996 | 26.98 | c | 29.39 | g | 34.17 | a | 43.97 | 44.87 | 56.90 | 65.08 | 62.00 | 52.83 | 43.18 | 33.23 | 26.23 | 44.49 | a | |||||||||
1997 | 27.98 | a | 30.55 | 35.63 | a | 40.28 | 52.28 | b | 58.48 | a | 65.08 | a | 66.57 | a | 56.78 | 45.31 | 36.97 | 30.52 | c | 45.54 | ||||||
1998 | 31.11 | 35.59 | a | 39.61 | 47.66 | b | 56.93 | d | 60.52 | 70.63 | 67.13 | 60.10 | 44.56 | 39.00 | 32.06 | e | 48.74 | |||||||||
1999 | 31.85 | a | 34.67 | a | 37.06 | 42.04 | b | 50.31 | b | 58.20 | b | 63.12 | a | 63.29 | 52.93 | 44.42 | a | 38.91 | a | 32.43 | a | 45.77 | ||||
2000 | 29.02 | 31.98 | 36.77 | 44.79 | a | 50.24 | 56.62 | b | 63.65 | 63.57 | a | 52.18 | ----- | z | 29.48 | b | 26.10 | b | 44.04 | a | ||||||
2001 | 29.20 | a | 27.29 | 36.68 | 40.57 | 52.67 | a | 55.04 | b | 62.62 | b | 62.95 | c | 57.19 | c | 40.12 | e | 37.29 | b | 28.55 | b | 44.18 | ||||
2002 | 29.40 | a | 29.65 | b | 32.91 | c | 42.28 | a | 46.91 | b | 57.18 | 64.83 | b | 61.92 | e | 53.07 | c | 39.00 | c | 32.80 | 31.92 | a | 43.49 | |||
2003 | 32.08 | a | 30.30 | 37.24 | 41.52 | 49.05 | 59.10 | 66.67 | b | 64.75 | a | 56.02 | a | 45.65 | a | 28.32 | 27.12 | a | 44.82 | |||||||
2004 | 26.21 | 30.50 | 35.66 | l | ----- | z | 50.53 | b | 57.60 | a | 65.36 | b | 64.03 | 52.21 | a | 42.34 | c | 32.55 | 30.91 | c | 45.22 | b | ||||
2005 | 28.77 | 30.86 | 39.34 | 45.87 | 53.67 | a | 58.52 | d | ----- | z | 64.95 | b | 54.04 | f | 46.82 | 35.27 | 26.12 | a | 43.02 | b | ||||||
2006 | 35.60 | 30.28 | a | 36.96 | c | 45.91 | a | 52.82 | f | 60.70 | g | 70.27 | e | 63.40 | b | 57.54 | e | 45.36 | c | 35.06 | d | 28.88 | a | 44.93 | b | |
2007 | 26.24 | b | 33.94 | a | 39.65 | 45.00 | b | 52.05 | b | 57.83 | a | 69.77 | a | 65.19 | 54.82 | 46.62 | c | 36.64 | b | 32.32 | f | 47.98 | a | |||
2008 | 29.24 | f | 36.14 | h | 36.89 | c | 41.14 | e | ----- | z | 68.25 | x | 67.16 | b | 65.29 | 55.35 | 45.75 | a | 40.28 | 24.95 | a | 47.10 | d | |||
2009 | 28.00 | b | 32.12 | 33.53 | a | 44.20 | b | 50.97 | a | 60.11 | b | 65.02 | 63.61 | 59.05 | 39.85 | 36.93 | 22.56 | 44.66 | ||||||||
2010 | 33.27 | 35.80 | 39.20 | a | 43.78 | 47.95 | a | 57.15 | 63.97 | 64.81 | 55.25 | 45.90 | 32.97 | 31.34 | 45.95 | |||||||||||
2011 | 29.33 | a | 28.61 | 37.79 | 41.38 | a | 50.65 | 56.38 | 63.19 | 67.27 | 57.97 | 44.03 | 33.07 | 27.69 | 44.78 | |||||||||||
2012 | 28.65 | 31.66 | 36.40 | 43.80 | 49.26 | 55.35 | 64.81 | b | 62.50 | 54.40 | 44.08 | 37.65 | 32.65 | a | 45.10 | |||||||||||
2013 | 26.26 | 32.80 | 36.26 | 42.77 | 51.26 | 56.92 | 67.42 | 65.11 | 58.32 | 39.94 | 32.95 | 25.02 | 44.58 | |||||||||||||
2014 | 30.13 | 25.75 | 35.58 | 42.18 | 51.66 | 57.22 | 66.73 | 65.39 | 55.43 | 46.87 | 33.15 | 31.06 | 45.10 | |||||||||||||
2015 | 30.39 | 34.93 | 39.56 | 42.40 | 55.06 | 64.73 | 67.82 | c | 66.61 | 53.70 | 48.69 | 34.17 | 31.18 | 47.44 | ||||||||||||
2016 | 31.08 | 34.59 | f | 38.18 | 48.18 | 53.61 | 59.67 | d | 63.03 | 63.31 | b | 55.18 | b | 45.56 | d | 40.38 | 24.15 | a | 47.49 | a | ||||||
2017 | 21.90 | 28.52 | 37.06 | 41.53 | 50.38 | a | 58.87 | 66.10 | 65.69 | 56.25 | 42.60 | 35.40 | 25.24 | 44.13 | ||||||||||||
2018 | 32.45 | 27.75 | 37.95 | 43.17 | 56.69 | 57.38 | 64.39 | 63.18 | a | 51.90 | a | 42.32 | a | 35.08 | 31.77 | 45.34 | ||||||||||
2019 | 30.79 | 21.45 | 31.29 | 42.79 | a | 53.19 | g | 59.10 | j | 62.88 | j | 64.70 | i | 55.88 | j | 38.37 | h | 34.71 | k | 32.02 | k | 31.58 | h | |||
2020 | 32.21 | j | 30.40 | i | 36.27 | i | 43.32 | h | 50.39 | l | 58.36 | h | 65.40 | j | 66.86 | j | 56.31 | i | 43.65 | h | 36.39 | k | 30.93 | i | ----- | z |
2021 | 31.95 | l | 28.35 | h | 35.87 | h | 45.16 | h | 49.83 | k | 64.38 | j | 70.62 | j | 64.67 | j | 55.50 | j | 45.00 | k | 38.34 | k | 29.23 | k | ----- | z |
2022 | 29.84 | l | 30.71 | i | 40.48 | h | 41.20 | h | 49.37 | l | 61.91 | h | 71.25 | k | 74.77 | i | 64.24 | i | 53.82 | l | 28.79 | k | 24.85 | k | ----- | z |
2023 | 29.52 | k | 29.20 | h | 34.09 | h | 41.02 | j | 57.29 | j | 62.12 | i | 65.64 | m | 67.07 | h | 54.33 | l | 44.88 | k | 34.18 | k | 33.39 | l | ----- | z |
2024 | 26.07 | j | 34.11 | j | 36.21 | j | 43.22 | n | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 28.13 | 31.17 | 36.32 | 43.38 | 51.33 | 58.24 | 64.34 | 63.44 | 54.92 | 44.36 | 35.42 | 29.45 | 45.12 | |||||||||||||
S.D. | 4.70 | 3.52 | 2.21 | 1.99 | 2.62 | 2.22 | 2.49 | 2.34 | 2.45 | 2.22 | 3.01 | 3.43 | 1.19 | |||||||||||||
SKEW | -0.95 | -0.56 | -0.51 | 0.24 | 0.34 | 0.40 | 0.01 | -0.08 | 0.06 | -0.05 | -0.63 | -0.36 | 0.96 | |||||||||||||
MAX | 38.50 | 37.11 | 39.89 | 48.18 | 58.27 | 64.73 | 70.63 | 68.76 | 60.17 | 49.67 | 40.62 | 35.15 | 48.74 | |||||||||||||
MIN | 14.11 | 21.45 | 30.31 | 39.43 | 44.87 | 53.67 | 57.98 | 57.95 | 49.90 | 39.00 | 25.57 | 21.38 | 43.10 | |||||||||||||
YRS | 70 | 66 | 69 | 71 | 68 | 65 | 65 | 70 | 67 | 68 | 69 | 68 | 45 |