YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1935 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1936 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1937 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1938 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1939 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1940 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1941 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1942 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1943 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1944 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1945 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1946 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1947 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
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 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1952 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1953 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1954 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1955 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1956 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1957 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1958 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1959 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1960 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1961 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1962 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 64.94 | 61.55 | 58.93 | a | 47.13 | 37.90 | 29.58 | 50.00 | f | |||||
1963 | 17.77 | a | 28.54 | 35.16 | 47.83 | 54.87 | 60.70 | 65.13 | 62.77 | 56.37 | 48.03 | 36.30 | 24.48 | 44.83 | ||||||||||||
1964 | 24.10 | 22.86 | 31.74 | 41.90 | 54.87 | 59.87 | 65.52 | 63.39 | 56.79 | a | 44.23 | 34.87 | 27.29 | 43.95 | ||||||||||||
1965 | 27.35 | 23.00 | 25.16 | 45.37 | 53.77 | 61.40 | 64.55 | 61.45 | 55.03 | 43.42 | 39.00 | 29.97 | 44.12 | |||||||||||||
1966 | 19.58 | 22.39 | 32.32 | 41.30 | 51.97 | 60.87 | 67.10 | 62.39 | 56.55 | a | 39.87 | 34.55 | a | 20.29 | 42.43 | |||||||||||
1967 | 20.52 | 25.75 | 35.68 | 46.27 | 46.19 | 60.10 | 62.74 | 59.53 | a | 53.93 | 42.03 | 33.43 | ----- | z | 44.20 | a | ||||||||||
1968 | ----- | z | ----- | z | ----- | z | 39.17 | 48.84 | 57.43 | b | ----- | z | 61.50 | s | 52.07 | 46.06 | 33.53 | 25.26 | 43.19 | e | ||||||
1969 | 27.42 | 27.93 | 24.77 | 43.80 | 52.90 | 58.43 | 65.55 | 64.26 | 57.70 | 43.97 | 32.37 | 28.39 | 43.96 | |||||||||||||
1970 | 20.80 | a | 29.21 | 29.00 | b | 39.40 | 49.74 | 58.17 | 63.61 | 61.45 | 56.50 | 41.81 | 32.40 | 28.32 | 42.53 | |||||||||||
1971 | 24.13 | 23.71 | 30.26 | 40.13 | ----- | z | 60.76 | a | 62.26 | 59.82 | c | 54.17 | 45.45 | 34.57 | 28.43 | a | 42.15 | a | ||||||||
1972 | 23.13 | 24.72 | 36.39 | 43.03 | 51.06 | 59.23 | 61.48 | 59.58 | 55.10 | 44.06 | 27.17 | 22.42 | 42.28 | |||||||||||||
1973 | 21.97 | 24.64 | 33.87 | 35.62 | a | 49.03 | 56.56 | e | 61.86 | j | 60.55 | 54.97 | 44.57 | a | 33.35 | d | 24.03 | 39.92 | a | |||||||
1974 | 23.06 | 23.00 | 37.48 | 42.67 | 53.90 | a | 57.26 | k | 62.90 | a | ----- | z | ----- | z | 46.48 | 33.00 | a | 24.68 | 38.58 | c | ||||||
1975 | 25.00 | 26.00 | 30.26 | 39.17 | 48.84 | 59.03 | 62.32 | 59.77 | 50.93 | 41.35 | 28.62 | a | 24.03 | 41.28 | ||||||||||||
1976 | 20.29 | 30.45 | 31.13 | 42.93 | 46.71 | 57.80 | 60.74 | 59.03 | 54.83 | 36.32 | 26.47 | 20.29 | 40.58 | |||||||||||||
1977 | 17.23 | 27.07 | 30.77 | 41.50 | b | 54.52 | 60.37 | 63.55 | 64.42 | ----- | z | ----- | z | 32.23 | 26.94 | 41.86 | b | |||||||||
1978 | 20.16 | 23.29 | 31.03 | 41.72 | a | 50.26 | 60.00 | 62.84 | 61.52 | 56.67 | 44.03 | 37.33 | 22.19 | 42.59 | ||||||||||||
1979 | 18.71 | 24.32 | 32.61 | 40.07 | 48.53 | a | 57.13 | 63.26 | 59.17 | a | 51.38 | a | 42.13 | 26.77 | 24.42 | 40.71 | ||||||||||
1980 | 23.39 | 25.43 | a | 27.71 | 35.53 | 50.00 | a | 62.72 | a | 64.06 | 63.29 | 57.73 | 41.68 | 28.10 | ----- | z | 43.60 | a | ||||||||
1981 | 24.71 | 25.44 | a | 34.00 | b | 45.07 | 51.24 | b | 60.62 | a | 64.97 | a | 61.48 | 55.30 | 46.65 | 35.41 | a | 28.55 | 44.45 | |||||||
1982 | 22.97 | a | 22.21 | d | 31.96 | e | 40.00 | b | 49.93 | b | 57.33 | 64.68 | 63.07 | b | 55.43 | b | 39.79 | c | 32.14 | b | 24.69 | b | 42.02 | |||
1983 | 19.90 | b | 27.44 | a | 31.39 | c | 33.77 | 43.60 | a | 54.17 | 62.79 | b | 61.29 | 57.13 | 46.81 | 36.53 | 16.73 | a | 40.96 | |||||||
1984 | 20.63 | a | 23.66 | 27.97 | b | 35.39 | b | 51.87 | 61.38 | a | 61.27 | a | 60.73 | a | 49.54 | b | 42.81 | 33.33 | 28.21 | c | 41.40 | |||||
1985 | 20.57 | a | 23.15 | a | 34.14 | b | 42.69 | a | 51.32 | 60.14 | a | 61.13 | 63.58 | 56.33 | 44.47 | a | 32.37 | 20.32 | 42.52 | |||||||
1986 | 24.13 | 29.36 | 34.47 | a | 43.20 | 50.16 | 60.23 | 64.48 | 61.32 | 57.38 | a | 45.35 | 31.97 | 26.90 | 44.08 | |||||||||||
1987 | 22.58 | 29.46 | 28.19 | 35.40 | 51.52 | 59.50 | b | 63.65 | 62.03 | 54.93 | 43.81 | 32.33 | 22.90 | 42.19 | ||||||||||||
1988 | 20.74 | 22.86 | 28.06 | 38.20 | 48.52 | 58.37 | 63.26 | 62.13 | 53.50 | 44.42 | 32.50 | 22.97 | 41.29 | |||||||||||||
1989 | 24.94 | 24.56 | a | 31.84 | 42.57 | 52.68 | 58.23 | 61.61 | 62.10 | 51.70 | 41.74 | 28.73 | 18.53 | a | 41.60 | |||||||||||
1990 | 22.42 | 25.71 | 33.61 | 42.73 | 47.77 | 63.93 | 62.23 | 59.52 | 57.17 | 41.87 | 34.21 | a | 20.13 | 42.61 | ||||||||||||
1991 | 23.48 | 27.07 | ----- | z | 43.40 | 54.60 | a | 61.90 | 64.00 | 63.00 | n | 54.73 | 43.87 | 32.03 | 30.23 | 43.53 | b | |||||||||
1992 | 27.71 | 32.86 | 35.50 | a | 43.83 | 51.17 | b | 58.57 | b | 63.52 | 61.23 | 55.37 | c | 45.46 | e | 30.55 | a | 26.26 | 44.34 | |||||||
1993 | 25.67 | a | 26.32 | 32.94 | 41.73 | 51.87 | 61.83 | 67.71 | 63.10 | 54.03 | 41.71 | 28.73 | 24.81 | 43.37 | ||||||||||||
1994 | 22.67 | a | 23.82 | 36.10 | 41.97 | a | 54.19 | 64.40 | 65.26 | 63.52 | 55.20 | 45.63 | a | 35.70 | 30.03 | 44.87 | ||||||||||
1995 | 26.94 | 30.61 | 34.45 | 40.90 | 52.03 | 60.60 | 64.71 | 64.81 | 56.86 | a | 42.77 | 35.34 | a | 27.74 | 44.81 | |||||||||||
1996 | 22.77 | 29.62 | 30.00 | 41.30 | 58.23 | a | 63.53 | 66.87 | 64.31 | b | 54.73 | 44.07 | a | 33.57 | 25.90 | 44.58 | ||||||||||
1997 | 24.42 | 27.57 | 34.65 | 39.39 | b | 52.45 | 60.03 | 64.81 | 63.23 | 59.07 | 45.23 | 31.80 | 24.23 | 43.91 | ||||||||||||
1998 | 28.20 | a | 30.21 | 27.17 | h | 39.37 | 54.58 | 62.20 | 67.52 | 63.68 | 60.03 | 49.29 | 38.23 | 28.55 | 47.44 | a | ||||||||||
1999 | 28.43 | a | 30.93 | 35.97 | 42.10 | 51.52 | 61.24 | a | 64.83 | b | 64.29 | 55.10 | a | 42.13 | 36.33 | 26.32 | 44.93 | |||||||||
2000 | 25.84 | 30.79 | 35.06 | 42.40 | 55.13 | 62.13 | 65.13 | 63.74 | 55.73 | 48.57 | a | 28.76 | a | 23.32 | 44.72 | |||||||||||
2001 | 25.29 | 29.86 | 34.94 | 44.97 | 53.71 | 62.70 | 67.48 | 64.19 | 56.00 | 42.84 | 38.37 | 26.84 | 45.60 | |||||||||||||
2002 | 26.42 | 24.82 | 28.42 | 46.79 | a | 51.52 | 63.03 | 65.32 | 65.45 | 56.27 | 46.81 | 32.80 | 28.68 | 44.69 | ||||||||||||
2003 | 25.35 | 27.50 | 34.00 | 42.67 | 52.58 | 59.20 | 64.77 | 64.26 | 54.70 | 48.77 | 36.71 | b | 25.33 | d | 44.65 | |||||||||||
2004 | 26.52 | 26.59 | 40.48 | 44.82 | b | 53.73 | a | 60.23 | 63.26 | 61.35 | 55.97 | 47.48 | 35.07 | 26.55 | 45.17 | |||||||||||
2005 | 30.10 | 33.18 | 32.93 | a | 41.87 | 54.03 | a | 62.10 | 63.58 | 63.65 | 58.10 | a | 46.90 | 34.13 | g | 24.83 | a | 46.48 | a | |||||||
2006 | 28.26 | 26.50 | 36.94 | 45.53 | 55.65 | 62.83 | 66.27 | a | 65.13 | 54.43 | 46.29 | 35.31 | a | 26.96 | f | 47.56 | a | |||||||||
2007 | 23.35 | 26.61 | 38.10 | 38.69 | a | 53.45 | 59.57 | 63.42 | 65.45 | 59.93 | 45.94 | 34.03 | 27.77 | 44.69 | ||||||||||||
2008 | 22.90 | 28.03 | 33.52 | 39.47 | 51.42 | 63.47 | 64.87 | 62.74 | 54.10 | 44.29 | 32.80 | 25.71 | 43.61 | |||||||||||||
2009 | 23.71 | 30.36 | 35.84 | 40.57 | 52.97 | 63.27 | 65.84 | 64.29 | 54.07 | 43.16 | 35.10 | 22.42 | 44.30 | |||||||||||||
2010 | 22.71 | 26.46 | 33.26 | 43.43 | 51.68 | 64.80 | 65.58 | 64.03 | 59.63 | 45.39 | 31.13 | 28.48 | 44.72 | |||||||||||||
2011 | 20.97 | 22.21 | 36.03 | 43.47 | 51.55 | 65.47 | 69.77 | 69.74 | 55.63 | 44.42 | 32.17 | 25.55 | 44.75 | |||||||||||||
2012 | 24.87 | 27.10 | 38.19 | 47.07 | 53.90 | 64.50 | 65.68 | 63.97 | 55.40 | 42.84 | 34.60 | 24.61 | 45.23 | |||||||||||||
2013 | 24.87 | 25.89 | 30.39 | 36.63 | 51.13 | 64.13 | 65.55 | 63.45 | 57.77 | 41.94 | 29.90 | 24.65 | 43.02 | |||||||||||||
2014 | 19.00 | 25.93 | 27.97 | 40.17 | 50.13 | 62.53 | 64.19 | 63.29 | 58.30 | 45.35 | 29.33 | 28.39 | 42.88 | |||||||||||||
2015 | 23.90 | 27.25 | 33.90 | 42.97 | 50.94 | 62.27 | 65.77 | 62.84 | 59.27 | 48.32 | 33.30 | 27.55 | 44.86 | |||||||||||||
2016 | 25.13 | 27.59 | 35.94 | 43.03 | 50.16 | 62.10 | 67.39 | 62.26 | 58.57 | 47.42 | 38.17 | 25.68 | 45.29 | |||||||||||||
2017 | 27.39 | 32.96 | 37.39 | 43.97 | 50.16 | 62.17 | 65.32 | 62.32 | 56.13 | 44.29 | 36.47 | 25.61 | 45.35 | |||||||||||||
2018 | 20.55 | 25.54 | 36.26 | 37.73 | 56.58 | 64.97 | 66.19 | 63.42 | 56.77 | 46.97 | 29.70 | 26.13 | 44.23 | |||||||||||||
2019 | 25.23 | 26.61 | 32.94 | 41.77 | 50.39 | 59.57 | 64.58 | 66.19 | 61.77 | 40.65 | 30.60 | 29.23 | 44.13 | |||||||||||||
2020 | 27.23 | 25.07 | 39.97 | 40.70 | 53.06 | 62.23 | 67.55 | 65.16 | 51.57 | 40.32 | 36.70 | 23.35 | 44.41 | |||||||||||||
2021 | 25.00 | 21.96 | 32.90 | 39.77 | 53.35 | 63.60 | 64.71 | 64.45 | 57.17 | 44.71 | 34.17 | 31.35 | 44.43 | |||||||||||||
2022 | 20.16 | 18.89 | 29.77 | 41.60 | 52.94 | 64.53 | 68.55 | 65.94 | 58.47 | 46.23 | 31.37 | 26.55 | 43.75 | |||||||||||||
2023 | 26.97 | 26.25 | 33.10 | 38.33 | 53.74 | 60.87 | 67.23 | 67.58 | 59.87 | 46.39 | 35.87 | 28.65 | 45.40 | |||||||||||||
2024 | 21.97 | 31.72 | 35.58 | 42.17 | l | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 29.76 | i | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 23.64 | 26.57 | 33.13 | 41.46 | 51.82 | 61.02 | 64.66 | 62.95 | 55.98 | 44.37 | 33.22 | 25.63 | 43.66 | |||||||||||||
S.D. | 2.91 | 3.07 | 3.41 | 3.03 | 2.59 | 2.37 | 1.92 | 2.09 | 2.42 | 2.55 | 3.06 | 3.06 | 1.40 | |||||||||||||
SKEW | -0.08 | 0.17 | -0.30 | -0.35 | -0.45 | -0.32 | 0.19 | 0.38 | -0.22 | -0.43 | -0.26 | -0.64 | -0.70 | |||||||||||||
MAX | 30.10 | 33.18 | 40.48 | 47.83 | 58.23 | 65.47 | 69.77 | 69.74 | 61.77 | 49.29 | 39.00 | 31.35 | 45.60 | |||||||||||||
MIN | 17.23 | 18.89 | 24.77 | 33.77 | 43.60 | 54.17 | 60.74 | 59.03 | 49.54 | 36.32 | 26.47 | 16.73 | 40.58 | |||||||||||||
YRS | 61 | 61 | 59 | 61 | 60 | 60 | 60 | 59 | 60 | 61 | 61 | 59 | 50 |