YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
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 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1963 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1964 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1965 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1966 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1967 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1968 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1969 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1970 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1971 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1972 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1973 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1974 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1975 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1976 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1977 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1978 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1979 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1980 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1981 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 66.58 | 62.29 | 57.62 | a | 48.28 | b | 33.17 | ----- | z | 53.59 | g | |||
1982 | 25.17 | a | 30.96 | a | 36.37 | a | 44.39 | b | 49.13 | a | 58.69 | a | 66.13 | 65.52 | 59.32 | b | 42.83 | b | 34.46 | b | 29.74 | 45.23 | ||||
1983 | 27.97 | a | 32.25 | 37.46 | e | 38.45 | a | 46.52 | b | 55.57 | b | 63.14 | c | 62.77 | a | 60.69 | d | 50.71 | 37.45 | a | 27.60 | a | 45.05 | |||
1984 | 27.62 | b | 25.62 | c | 34.21 | b | 41.69 | a | 54.87 | a | 63.56 | c | 65.31 | b | 64.69 | b | 55.19 | c | 45.97 | b | 32.93 | b | 31.58 | e | 45.27 | |
1985 | 26.38 | b | 27.00 | e | 37.14 | c | 43.79 | a | 53.46 | e | 61.30 | 64.97 | 64.81 | 59.20 | 47.94 | 35.07 | 23.68 | 45.39 | ||||||||
1986 | 26.58 | 35.32 | 39.39 | 49.37 | 53.74 | 63.67 | 64.94 | 65.50 | a | 58.50 | 46.61 | 35.86 | b | 30.16 | 47.47 | |||||||||||
1987 | 23.71 | 31.75 | 34.03 | 44.40 | 53.71 | 61.03 | 65.45 | 64.97 | 57.33 | 48.81 | 33.17 | 25.42 | 45.32 | |||||||||||||
1988 | 26.26 | 30.93 | 35.00 | 43.20 | 52.42 | 62.37 | 65.39 | 65.52 | 55.10 | 48.77 | 33.83 | 24.90 | 45.31 | |||||||||||||
1989 | 25.35 | 36.57 | 39.48 | 46.97 | a | 53.74 | 61.23 | 66.35 | 64.74 | 57.90 | 44.39 | 34.90 | 25.23 | 46.41 | ||||||||||||
1990 | 24.39 | 29.68 | 39.03 | 47.87 | 52.97 | 66.83 | 65.74 | 62.65 | k | 60.30 | 45.48 | 37.30 | 28.71 | 45.30 | a | |||||||||||
1991 | 30.33 | a | 34.93 | 37.29 | 43.80 | 52.29 | 60.40 | 65.74 | 64.63 | a | 57.17 | 44.61 | 32.50 | 32.16 | 46.32 | |||||||||||
1992 | 29.33 | a | 33.43 | a | 39.19 | 46.80 | 55.32 | 58.50 | 65.68 | 63.68 | 57.67 | 45.13 | 30.27 | 30.77 | 46.31 | |||||||||||
1993 | 35.68 | 34.25 | 38.87 | 46.30 | 54.55 | 61.53 | 67.84 | 65.65 | 56.93 | 44.90 | 33.27 | 28.48 | 47.35 | |||||||||||||
1994 | 25.65 | 30.78 | a | 40.29 | 44.47 | 55.65 | 66.60 | 67.23 | 66.65 | 58.76 | a | 46.13 | a | 35.83 | a | 31.39 | 47.45 | |||||||||
1995 | 29.03 | 38.36 | 41.67 | a | 42.67 | 51.77 | 60.47 | 64.29 | 65.61 | 59.83 | 43.55 | 35.27 | 28.90 | 46.78 | ||||||||||||
1996 | 24.45 | 34.78 | b | 33.52 | 45.23 | 56.55 | 63.80 | 68.90 | 65.58 | 57.53 | 46.13 | 34.10 | 25.94 | 46.38 | ||||||||||||
1997 | 29.65 | 33.32 | 41.68 | 45.90 | 56.61 | 61.57 | 66.71 | 65.48 | 63.17 | 44.10 | 34.87 | 27.48 | 47.54 | |||||||||||||
1998 | 27.71 | 33.00 | 36.87 | 41.10 | 51.13 | 59.83 | 68.65 | 64.06 | 61.50 | 50.45 | 36.97 | 27.87 | 46.60 | |||||||||||||
1999 | 28.61 | 31.57 | 39.19 | 44.87 | 52.65 | 61.40 | 67.00 | 64.71 | 60.37 | 41.94 | 34.33 | 26.35 | 46.08 | |||||||||||||
2000 | 29.42 | 33.21 | 38.16 | 48.23 | 57.03 | 65.53 | 66.81 | 64.42 | 57.60 | 48.71 | 32.00 | 27.65 | 47.40 | |||||||||||||
2001 | 27.34 | b | 33.43 | 39.81 | 46.90 | 54.87 | 62.50 | 67.19 | 64.48 | 58.77 | 46.52 | 39.17 | 24.97 | 47.16 | ||||||||||||
2002 | 27.94 | 31.43 | 36.94 | 50.67 | 52.87 | 64.83 | 65.97 | 66.13 | 58.40 | 48.58 | 33.90 | 29.87 | 47.29 | |||||||||||||
2003 | 28.94 | 36.64 | 38.03 | 45.13 | 53.26 | 62.27 | 66.29 | 66.52 | 59.63 | 49.81 | 36.30 | 24.58 | 47.28 | |||||||||||||
2004 | 32.55 | 29.72 | 42.65 | 48.37 | 54.29 | 60.90 | 65.61 | 63.74 | 57.03 | 49.94 | 36.97 | 28.10 | 47.49 | |||||||||||||
2005 | 33.52 | 38.96 | 37.48 | 44.40 | 55.03 | 61.20 | 67.19 | 65.35 | 59.57 | 49.48 | 34.30 | 26.71 | 47.77 | |||||||||||||
2006 | 28.19 | 34.39 | 41.52 | 48.07 | 54.39 | 62.43 | 66.84 | 66.58 | 57.20 | 47.84 | 34.97 | 25.77 | 47.35 | |||||||||||||
2007 | 29.90 | 32.61 | 38.74 | 45.07 | 54.71 | 60.63 | 66.52 | 66.84 | 60.57 | 45.68 | 36.50 | 27.06 | 47.07 | |||||||||||||
2008 | 28.39 | 31.69 | 35.94 | 43.00 | 52.13 | 63.66 | a | 65.94 | 65.35 | 56.80 | 45.74 | 32.93 | 28.29 | 45.82 | ||||||||||||
2009 | 26.67 | a | 31.36 | 39.71 | 43.97 | 55.81 | 61.50 | 68.42 | 65.35 | 57.67 | 47.55 | 33.30 | 28.48 | 46.65 | ||||||||||||
2010 | 26.55 | 32.46 | 35.42 | 47.30 | 51.32 | 64.77 | 66.76 | n | 65.00 | 60.37 | 46.16 | 29.32 | b | 27.00 | 44.15 | a | ||||||||||
2011 | 24.45 | 24.93 | 38.84 | 48.67 | 48.97 | a | 58.90 | 65.97 | 65.65 | 54.70 | 40.65 | 31.00 | 23.65 | 43.86 | ||||||||||||
2012 | 26.16 | 28.52 | 32.45 | 44.43 | 50.16 | 56.40 | 61.23 | 60.35 | 51.97 | 40.65 | 29.67 | ----- | z | 43.82 | a | |||||||||||
2013 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2014 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 57.91 | s | ----- | z | 29.60 | 26.03 | 27.82 | j | ||
2015 | 22.23 | 29.00 | 34.74 | 40.90 | 45.77 | 59.23 | 60.74 | 60.35 | 56.00 | 45.97 | 30.70 | 21.13 | 42.23 | |||||||||||||
2016 | 23.19 | 24.34 | 34.13 | 39.83 | 46.13 | 57.87 | 60.81 | 57.39 | 53.00 | 43.23 | 34.40 | 27.52 | 41.82 | |||||||||||||
2017 | 31.74 | 35.50 | 43.90 | 48.50 | 53.35 | 63.37 | 66.84 | 65.42 | 59.20 | 50.71 | 38.73 | 29.81 | 48.92 | |||||||||||||
2018 | 25.58 | 35.79 | 40.58 | 48.57 | 53.90 | 65.50 | 66.61 | 65.81 | 60.53 | 51.58 | 33.13 | 32.06 | 48.30 | |||||||||||||
2019 | 30.06 | 32.71 | 42.16 | 47.47 | 50.23 | 60.63 | 65.42 | 68.13 | 63.00 | 47.19 | 37.43 | 29.42 | 47.82 | |||||||||||||
2020 | 29.81 | 33.90 | 44.39 | 49.13 | 55.42 | 63.30 | 67.68 | 65.52 | 55.23 | 42.45 | 35.50 | 23.23 | 47.13 | |||||||||||||
2021 | 25.55 | 29.89 | 38.58 | 48.03 | 54.39 | 64.23 | 65.45 | 65.68 | 58.80 | 46.13 | 35.03 | 33.16 | 47.08 | |||||||||||||
2022 | 27.35 | 26.68 | 35.16 | 47.30 | 53.74 | 65.53 | 67.52 | 66.48 | 59.50 | 48.06 | 32.10 | 30.48 | 46.66 | |||||||||||||
2023 | 29.19 | 30.64 | 39.35 | 45.17 | 54.26 | 59.57 | 67.32 | 65.97 | 59.53 | 49.10 | 38.93 | 26.32 | 47.11 | |||||||||||||
2024 | 29.39 | 33.90 | 42.19 | 44.97 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 37.61 | h | ||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 27.76 | 32.10 | 38.33 | 45.50 | 52.98 | 61.83 | 65.96 | 64.83 | 58.27 | 46.55 | 34.32 | 27.69 | 46.45 | |||||||||||||
S.D. | 2.79 | 3.38 | 2.91 | 2.77 | 2.74 | 2.64 | 1.85 | 1.94 | 2.37 | 2.77 | 2.51 | 2.72 | 1.48 | |||||||||||||
SKEW | 0.49 | -0.37 | 0.02 | -0.46 | -1.10 | -0.17 | -1.34 | -1.94 | -0.42 | -0.28 | -0.11 | -0.10 | -1.44 | |||||||||||||
MAX | 35.68 | 38.96 | 44.39 | 50.67 | 57.03 | 66.83 | 68.90 | 68.13 | 63.17 | 51.58 | 39.17 | 33.16 | 48.92 | |||||||||||||
MIN | 22.23 | 24.34 | 32.45 | 38.45 | 45.77 | 55.57 | 60.74 | 57.39 | 51.97 | 40.65 | 29.32 | 21.13 | 41.82 | |||||||||||||
YRS | 41 | 41 | 41 | 41 | 40 | 40 | 40 | 40 | 41 | 41 | 42 | 40 | 37 |