YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1936 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 31.58 | k | 27.03 | a | 27.03 | k |
1937 | 18.42 | 27.85 | b | 31.45 | b | 43.57 | 55.16 | 61.37 | 65.97 | 67.61 | 59.87 | 46.81 | 32.97 | 25.43 | a | 44.71 | ||||||||||
1938 | 24.07 | a | 28.63 | a | 38.81 | 43.41 | a | 52.03 | 61.80 | 65.39 | 67.35 | 57.20 | 46.81 | 28.70 | 27.10 | 45.11 | ||||||||||
1939 | 27.58 | 20.46 | 33.71 | 42.50 | 51.42 | 61.00 | 64.71 | 62.52 | 60.00 | 44.39 | 29.43 | 25.03 | 43.56 | |||||||||||||
1940 | 20.34 | b | 28.93 | 36.45 | 42.83 | a | 52.71 | 61.63 | 67.90 | 64.23 | 61.43 | 48.61 | 32.38 | a | 29.50 | a | 45.58 | |||||||||
1941 | 29.52 | b | 31.57 | 32.63 | a | 43.77 | 55.00 | 60.20 | 64.55 | 66.26 | 57.26 | c | 48.54 | e | 36.47 | 28.06 | 46.15 | |||||||||
1942 | 24.17 | a | 26.39 | 32.80 | a | 45.07 | a | 51.32 | 62.00 | 65.39 | 64.29 | 54.39 | b | 46.66 | b | 38.07 | b | 28.23 | a | 44.90 | ||||||
1943 | 25.52 | b | 30.16 | c | 32.30 | a | 46.50 | 50.03 | 63.53 | 65.74 | 67.61 | 57.47 | 46.00 | 31.97 | a | 22.13 | a | 44.91 | ||||||||
1944 | 24.45 | 29.83 | 31.84 | 40.50 | 50.97 | 61.10 | 64.71 | 65.84 | 57.57 | 47.52 | 36.60 | 24.68 | 44.63 | |||||||||||||
1945 | 25.65 | 30.70 | a | 35.19 | 37.90 | 52.13 | a | 58.73 | 65.32 | 67.03 | 57.41 | a | 46.23 | 35.07 | 25.52 | 44.74 | ||||||||||
1946 | 24.61 | 28.93 | 36.94 | 49.13 | 50.81 | 63.80 | 66.84 | 65.16 | 60.38 | a | 48.23 | 33.54 | b | 30.33 | a | 46.56 | ||||||||||
1947 | ----- | z | ----- | z | 31.33 | g | 41.36 | b | 53.07 | a | 59.70 | 67.16 | 67.45 | 60.47 | o | 50.10 | 30.62 | a | 26.06 | 49.44 | d | |||||
1948 | 21.20 | a | 25.21 | 28.52 | 47.33 | 53.61 | 62.80 | 67.80 | a | 65.87 | 61.47 | 46.68 | 30.38 | a | 29.06 | 44.99 | ||||||||||
1949 | 18.72 | b | 28.25 | 34.97 | 43.30 | 53.64 | c | 60.10 | a | 66.24 | b | 63.66 | b | 58.79 | a | 45.68 | 37.80 | 25.16 | 44.69 | |||||||
1950 | 26.97 | 29.57 | 32.35 | 44.34 | a | 53.13 | 62.30 | 63.87 | 61.10 | 57.77 | 50.90 | 33.21 | a | 28.61 | 45.34 | |||||||||||
1951 | 23.97 | a | 27.22 | a | 33.67 | a | 39.87 | 52.74 | 60.57 | 68.84 | 66.19 | 58.07 | 47.97 | a | 31.23 | 26.53 | a | 44.74 | ||||||||
1952 | 28.81 | 29.69 | 33.13 | 43.57 | 53.29 | 66.67 | 66.13 | 67.42 | 58.37 | 44.13 | 30.93 | 25.58 | 45.64 | |||||||||||||
1953 | 31.71 | 27.64 | 38.94 | 42.63 | 49.74 | 66.40 | 68.39 | 64.58 | 57.50 | 47.74 | 35.47 | 25.16 | 46.33 | |||||||||||||
1954 | 27.68 | 33.11 | 33.23 | 46.97 | 51.71 | 63.73 | 69.39 | 65.71 | 61.90 | 48.84 | 35.77 | 29.39 | 47.28 | |||||||||||||
1955 | 26.71 | 25.18 | 33.00 | 43.30 | 51.55 | 59.03 | 66.10 | 66.03 | 59.93 | a | 47.77 | 34.17 | 30.06 | 45.24 | ||||||||||||
1956 | 28.42 | 25.38 | 33.71 | 41.80 | 56.50 | a | 65.20 | 66.00 | 64.65 | 58.83 | 48.29 | 30.90 | 26.73 | a | 45.53 | |||||||||||
1957 | 27.29 | 37.11 | 37.32 | 40.63 | 51.65 | 60.63 | 68.48 | 66.03 | 55.30 | 48.45 | 32.77 | 29.84 | 46.29 | |||||||||||||
1958 | 26.13 | 31.18 | 30.87 | 41.70 | 55.10 | 63.93 | 65.90 | 65.42 | 58.63 | 46.52 | 35.57 | 25.74 | 45.56 | |||||||||||||
1959 | 21.45 | 28.21 | 33.58 | 41.53 | 53.61 | 62.53 | 64.23 | 65.94 | 56.17 | 43.16 | 31.57 | 29.52 | 44.29 | |||||||||||||
1960 | 24.97 | b | 25.17 | 31.97 | 43.93 | 51.80 | a | 61.63 | 62.39 | 63.97 | 57.53 | 45.16 | 35.77 | 25.29 | 44.13 | |||||||||||
1961 | 21.03 | 26.68 | 35.68 | 39.43 | 51.32 | 60.37 | 62.65 | 63.00 | 53.43 | 43.23 | 33.10 | 25.00 | 42.91 | |||||||||||||
1962 | 19.58 | 31.61 | 30.58 | 43.20 | 54.06 | 58.90 | 64.32 | 64.90 | 58.77 | 48.45 | 36.83 | 28.97 | 45.01 | |||||||||||||
1963 | 15.68 | 29.32 | 34.48 | 45.83 | 54.00 | 61.37 | 68.10 | 65.68 | 60.23 | 51.23 | a | 36.33 | 22.81 | 45.42 | ||||||||||||
1964 | 24.61 | 21.69 | 30.58 | 42.20 | 53.19 | 61.77 | 67.74 | 65.26 | 59.20 | 46.71 | 35.73 | 29.19 | 44.82 | |||||||||||||
1965 | 28.45 | 25.14 | 27.58 | 45.30 | 51.52 | 60.43 | 67.43 | a | 63.71 | 56.93 | 45.61 | 39.70 | 30.68 | 45.21 | ||||||||||||
1966 | 20.97 | 25.25 | 35.81 | 43.47 | 53.16 | 61.43 | 69.26 | 63.23 | 58.90 | 44.48 | 37.27 | 25.26 | 44.87 | |||||||||||||
1967 | 26.23 | 27.82 | 39.10 | 47.53 | 50.71 | 60.37 | 66.26 | 62.00 | 57.30 | 47.52 | 35.43 | 25.42 | 45.47 | |||||||||||||
1968 | 26.48 | 28.90 | 33.68 | 40.38 | a | 50.03 | 62.10 | 64.73 | a | 63.23 | 54.90 | 45.23 | 34.20 | 23.90 | 43.98 | |||||||||||
1969 | 27.77 | 29.18 | 27.45 | 46.10 | 52.06 | 58.50 | 67.68 | 66.26 | 58.87 | 43.55 | 32.90 | 28.03 | 44.86 | |||||||||||||
1970 | 22.35 | 28.89 | 29.71 | 40.63 | 53.42 | 59.93 | 66.65 | 65.52 | 55.07 | 40.68 | 33.37 | 27.83 | a | 43.67 | ||||||||||||
1971 | 22.90 | 25.68 | 32.06 | 41.07 | 50.35 | 61.67 | 64.97 | a | 61.45 | 54.37 | 43.83 | a | 35.03 | 26.90 | 43.36 | |||||||||||
1972 | 22.77 | 25.62 | 36.13 | 43.77 | 51.58 | 61.97 | 63.84 | 62.94 | 57.00 | 47.03 | 28.87 | 21.74 | 43.60 | |||||||||||||
1973 | 21.65 | 27.00 | 33.97 | 36.47 | 49.19 | 58.79 | a | 64.13 | 60.68 | 53.87 | 45.19 | 34.60 | 24.53 | a | 42.51 | |||||||||||
1974 | 22.32 | 23.86 | 37.42 | 44.10 | 56.35 | 62.03 | 66.19 | 62.06 | 53.60 | 49.37 | a | 35.43 | 25.19 | 44.83 | ||||||||||||
1975 | 24.97 | 28.14 | 34.74 | 41.17 | 49.45 | 60.00 | 64.03 | 64.29 | 55.27 | 46.10 | 33.27 | 27.48 | 44.08 | |||||||||||||
1976 | 24.10 | 34.10 | 35.87 | 46.47 | 50.32 | 60.47 | 64.55 | 63.71 | 56.67 | 41.35 | 28.47 | 23.60 | a | 44.14 | ||||||||||||
1977 | 19.65 | 29.14 | 33.45 | 45.13 | 55.23 | 63.90 | 67.48 | 66.68 | 59.50 | 47.10 | 35.73 | 32.00 | 46.25 | |||||||||||||
1978 | 22.48 | 26.21 | 36.39 | 47.53 | 51.55 | 62.50 | 67.39 | 63.42 | 57.57 | 46.46 | c | 37.70 | j | 21.71 | n | 48.15 | b | |||||||||
1979 | 18.55 | i | 27.95 | h | 35.29 | 44.00 | 51.39 | 58.73 | 65.39 | 63.17 | a | 56.57 | 46.97 | 30.03 | 27.45 | 47.90 | b | |||||||||
1980 | 26.19 | 28.43 | a | 33.21 | b | 40.50 | 51.29 | 64.17 | 70.48 | 65.52 | 58.34 | a | 42.74 | 32.17 | 29.48 | 45.21 | ||||||||||
1981 | 25.58 | 25.96 | a | 35.61 | 47.63 | 50.97 | 62.77 | 67.19 | 63.52 | 56.50 | 46.52 | 39.07 | 27.17 | a | 45.71 | |||||||||||
1982 | 24.33 | a | 23.71 | 34.90 | 42.59 | a | 51.37 | a | 58.00 | 65.50 | a | 65.39 | 58.37 | 43.30 | a | 33.00 | a | 26.32 | 43.90 | |||||||
1983 | 24.28 | b | 27.29 | 35.16 | 38.27 | 47.55 | b | 57.53 | 66.58 | 66.74 | 59.93 | 47.77 | 35.71 | i | 16.95 | k | 47.11 | b | ||||||||
1984 | 19.48 | j | 25.87 | f | 31.77 | e | 39.90 | 53.71 | 61.43 | 66.00 | 63.94 | 54.90 | 42.45 | 34.47 | 26.67 | a | 47.52 | b | ||||||||
1985 | 21.33 | a | 22.88 | b | 36.81 | 44.47 | 53.35 | 61.17 | 64.58 | 63.94 | 55.10 | 44.90 | 33.33 | i | 21.97 | 44.59 | a | |||||||||
1986 | 26.97 | 28.93 | 39.14 | b | 45.07 | 51.55 | 60.50 | 65.32 | 64.55 | 57.47 | 44.03 | 32.10 | a | 26.61 | 45.19 | |||||||||||
1987 | 21.58 | 30.61 | 31.76 | b | 40.59 | a | 51.32 | 60.03 | 64.55 | 63.03 | 55.57 | 45.35 | 32.67 | 22.10 | 43.26 | |||||||||||
1988 | 20.48 | 25.41 | 31.32 | 41.83 | 51.19 | 61.07 | 64.52 | 64.23 | 54.27 | 45.70 | a | 34.23 | 22.52 | 43.06 | ||||||||||||
1989 | 23.52 | 23.11 | 36.03 | 43.90 | 54.45 | 58.97 | 64.81 | 63.55 | 55.50 | 44.45 | 32.37 | 17.65 | 43.19 | |||||||||||||
1990 | 20.26 | 26.00 | 33.06 | 42.83 | 50.42 | 65.00 | 64.61 | 62.13 | 59.17 | 43.48 | 33.73 | 18.30 | a | 43.25 | ||||||||||||
1991 | 20.45 | 29.29 | 34.90 | 42.50 | 52.74 | 61.17 | 63.87 | 63.35 | 55.43 | 44.19 | 29.62 | a | 26.58 | 43.68 | ||||||||||||
1992 | 23.74 | d | 30.21 | a | 35.94 | 46.62 | a | 52.19 | 57.83 | 62.83 | a | 61.65 | 57.43 | 46.00 | 27.87 | 21.73 | a | 43.67 | ||||||||
1993 | 22.07 | d | 25.71 | d | 34.55 | 43.10 | 52.26 | 60.33 | 66.68 | 62.97 | 55.40 | 43.10 | 27.34 | a | 23.57 | a | 43.09 | |||||||||
1994 | 21.71 | 23.37 | a | 35.33 | a | 42.43 | 54.03 | 64.60 | 65.48 | 65.97 | 58.00 | 45.57 | a | 33.30 | c | 28.10 | a | 44.82 | ||||||||
1995 | 26.63 | a | 30.11 | 34.04 | e | 40.34 | a | 50.00 | 59.80 | 64.71 | 67.29 | 57.50 | 44.16 | 35.61 | b | 29.00 | b | 44.93 | ||||||||
1996 | 21.21 | b | 28.72 | 31.34 | b | 42.52 | a | 56.23 | 63.67 | 66.19 | 64.71 | 55.50 | 44.23 | 33.56 | c | 24.06 | 44.33 | |||||||||
1997 | 20.69 | b | 27.69 | b | 34.29 | 38.43 | 51.87 | 60.17 | 65.74 | 64.81 | 60.13 | 45.60 | a | 31.50 | 22.76 | b | 43.64 | |||||||||
1998 | 27.32 | 29.68 | c | 32.42 | 39.79 | a | 53.03 | 61.77 | 67.42 | 63.90 | 61.10 | 49.13 | 38.22 | c | 28.38 | e | 46.01 | |||||||||
1999 | 25.90 | 30.19 | b | 33.57 | a | 40.14 | a | 49.26 | 58.80 | 66.06 | 63.90 | 55.77 | 44.03 | 36.54 | b | 24.33 | a | 44.04 | ||||||||
2000 | 25.33 | d | 32.75 | e | 36.15 | e | 45.63 | 56.87 | a | 63.13 | 66.50 | a | 66.94 | 58.70 | c | 45.47 | a | 28.10 | a | 22.87 | a | 45.70 | ||||
2001 | 21.39 | c | 30.11 | a | 35.16 | 46.17 | a | 51.68 | 60.97 | 66.87 | 62.45 | 55.40 | 43.72 | b | 36.37 | 27.43 | c | 44.81 | ||||||||
2002 | 27.27 | e | 26.17 | d | 32.70 | a | 47.41 | a | 52.97 | b | 66.57 | 67.87 | 67.71 | 59.32 | b | 45.42 | 34.00 | a | 28.07 | d | 46.29 | |||||
2003 | 27.93 | b | 28.46 | 38.27 | a | 45.76 | a | 56.45 | b | 61.07 | a | 70.23 | 68.42 | 58.55 | a | 50.16 | 38.00 | g | 27.77 | e | 48.46 | a | ||||
2004 | 27.48 | h | 27.92 | c | 42.03 | a | 45.10 | a | 56.00 | 62.41 | a | 64.63 | a | 63.43 | a | 59.15 | c | 48.41 | d | 35.74 | c | 28.56 | f | 50.48 | b | |
2005 | 30.71 | g | 33.58 | i | 32.76 | b | 44.46 | d | 53.25 | c | 62.34 | a | 66.33 | a | 61.59 | b | 60.00 | b | 48.56 | d | 35.92 | d | 25.20 | f | 51.69 | c |
2006 | 28.25 | k | 27.80 | c | 36.08 | e | ----- | z | 56.90 | 65.93 | 69.03 | 65.55 | 54.90 | a | 44.79 | b | 35.11 | b | 27.38 | b | 48.35 | b | ||||
2007 | 23.48 | b | 28.81 | b | 36.70 | d | 42.43 | g | 52.79 | b | 61.10 | a | 67.03 | 68.20 | a | 59.52 | a | 47.04 | c | 35.11 | b | 27.79 | c | 46.14 | a | |
2008 | 23.87 | a | 28.32 | d | 34.14 | i | 42.00 | f | 51.33 | a | 63.28 | a | 66.93 | b | 65.07 | a | 55.97 | a | 46.16 | f | 34.93 | 25.08 | g | 48.71 | d | |
2009 | 25.67 | a | 30.96 | c | 38.54 | e | 45.24 | e | 55.75 | g | 63.00 | 67.06 | 64.90 | b | 56.46 | b | 41.67 | g | 37.24 | a | 23.54 | e | 45.26 | b | ||
2010 | 24.83 | b | 25.85 | a | 34.56 | d | 46.37 | c | 51.61 | h | 65.92 | f | 67.52 | d | 65.90 | 61.87 | 49.39 | 33.73 | 31.40 | a | 44.14 | b | ||||
2011 | 23.00 | 22.71 | 37.21 | b | 45.17 | a | 50.94 | 65.10 | 70.68 | 69.90 | 58.60 | 45.71 | 34.60 | 23.39 | 45.58 | |||||||||||
2012 | 28.13 | a | 28.83 | 38.19 | 47.83 | 55.70 | a | 64.34 | a | 69.30 | a | 67.00 | a | 58.16 | e | 45.23 | ----- | z | 27.58 | e | 48.21 | a | ||||
2013 | 24.58 | ----- | z | 33.89 | c | 42.23 | 56.52 | b | 67.12 | e | 67.58 | 67.45 | 62.83 | 44.10 | 33.47 | 23.27 | a | 47.55 | a | |||||||
2014 | 22.06 | 26.32 | 32.68 | 42.33 | 54.77 | 62.97 | 67.00 | 67.26 | 60.07 | 48.16 | 30.93 | a | 26.43 | a | 45.08 | |||||||||||
2015 | 24.80 | a | 28.71 | 36.06 | 46.10 | 53.90 | 67.23 | 70.16 | 67.10 | 63.87 | 50.83 | a | 33.97 | 28.27 | a | 47.58 | ||||||||||
2016 | 25.35 | 29.45 | 37.94 | 43.55 | a | 53.12 | e | 66.97 | 71.71 | 65.29 | 59.53 | 49.87 | 38.79 | a | 23.97 | a | 47.13 | |||||||||
2017 | 25.52 | 34.74 | a | 39.71 | 45.13 | 52.87 | a | 65.57 | 69.94 | 64.40 | a | 59.11 | b | 45.84 | 37.87 | 25.83 | a | 47.21 | ||||||||
2018 | 23.13 | 28.04 | 37.23 | 43.03 | 59.71 | 68.67 | 69.10 | 66.90 | a | 59.63 | 46.07 | a | 31.80 | 25.35 | 46.55 | |||||||||||
2019 | 26.29 | 28.00 | 33.16 | 44.43 | 50.24 | b | 62.07 | 68.29 | 67.64 | c | 63.60 | 40.93 | a | 30.97 | a | 29.03 | 45.39 | |||||||||
2020 | 27.04 | d | 26.66 | 39.90 | 41.97 | 56.16 | 65.43 | 67.11 | c | 64.66 | b | 52.47 | 41.48 | d | 37.93 | 25.74 | 45.55 | |||||||||
2021 | 25.00 | a | 21.48 | a | 35.60 | a | 42.47 | 53.68 | 64.86 | a | 67.21 | b | 66.17 | a | 61.03 | 46.33 | a | 36.62 | a | 32.43 | a | 46.07 | ||||
2022 | 21.58 | 20.64 | f | 32.13 | a | 43.62 | a | 54.48 | 65.93 | 70.48 | 64.54 | g | 60.79 | b | 47.00 | 31.90 | 23.54 | c | 45.15 | b | ||||||
2023 | 25.94 | 25.39 | 34.10 | 41.00 | 54.33 | a | 59.90 | a | 66.90 | 68.13 | a | 61.28 | a | 48.00 | a | 34.04 | b | 29.72 | b | 45.73 | ||||||
2024 | 22.35 | 31.25 | a | 36.71 | 41.81 | n | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 30.10 | i | ||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 24.16 | 27.89 | 34.53 | 43.33 | 52.77 | 62.10 | 66.54 | 65.00 | 57.95 | 46.12 | 33.83 | 26.26 | 44.94 | |||||||||||||
S.D. | 2.90 | 2.97 | 2.77 | 2.58 | 2.17 | 2.47 | 1.96 | 1.93 | 2.41 | 2.34 | 2.80 | 2.85 | 1.13 | |||||||||||||
SKEW | -0.17 | 0.11 | -0.02 | -0.13 | 0.48 | 0.49 | 0.35 | -0.03 | 0.09 | -0.05 | -0.24 | -0.39 | 0.08 | |||||||||||||
MAX | 31.71 | 37.11 | 42.03 | 49.13 | 59.71 | 68.67 | 71.71 | 69.90 | 63.87 | 51.23 | 39.70 | 32.43 | 47.58 | |||||||||||||
MIN | 15.68 | 20.46 | 27.45 | 36.47 | 47.55 | 57.53 | 62.39 | 60.68 | 52.47 | 40.68 | 27.34 | 17.65 | 42.51 | |||||||||||||
YRS | 82 | 82 | 86 | 84 | 85 | 86 | 87 | 86 | 86 | 85 | 82 | 83 | 70 |