YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1948 | 21.06 | 22.72 | 29.90 | a | 36.83 | a | 44.90 | 51.93 | 60.65 | 61.71 | 54.40 | 46.87 | 42.50 | 31.65 | 42.09 | |||||||||||
1949 | 30.58 | 28.89 | 32.00 | 39.63 | 46.10 | 57.60 | 63.97 | 62.81 | 55.77 | 48.94 | 37.53 | 31.84 | 44.64 | |||||||||||||
1950 | 32.00 | 24.43 | 26.32 | 35.80 | 43.42 | 54.43 | 61.06 | 60.81 | 53.47 | 47.39 | 41.83 | 31.26 | 42.68 | |||||||||||||
1951 | 28.58 | 28.82 | 32.94 | 40.40 | 46.90 | 53.53 | 62.35 | 61.39 | 58.17 | 48.55 | 37.40 | 30.58 | 44.13 | |||||||||||||
1952 | 28.23 | 27.28 | 30.03 | 40.13 | 46.48 | 55.97 | 63.23 | 62.81 | 54.27 | 46.87 | 39.33 | 31.42 | 43.84 | |||||||||||||
1953 | 30.39 | 29.00 | 32.52 | 40.40 | 47.19 | 55.93 | 61.06 | 59.55 | 57.37 | 48.97 | 41.77 | 34.29 | 44.87 | |||||||||||||
1954 | 24.68 | 28.54 | 31.10 | 38.13 | 46.26 | 54.80 | 60.45 | 60.03 | 55.10 | 50.71 | 39.73 | 30.58 | 43.34 | |||||||||||||
1955 | 24.87 | 26.79 | 30.71 | 38.43 | 45.77 | 53.93 | 62.55 | 63.97 | 54.93 | 48.77 | 37.97 | 21.80 | a | 42.54 | ||||||||||||
1956 | 28.87 | 27.83 | 29.03 | 36.33 | 42.26 | 53.73 | 59.97 | 60.35 | 54.50 | 45.55 | 38.70 | 32.68 | 42.48 | |||||||||||||
1957 | 20.06 | 27.89 | 31.48 | 38.23 | 45.58 | 57.07 | 62.26 | 59.84 | 57.60 | 46.90 | 40.60 | 33.48 | 43.42 | |||||||||||||
1958 | 27.58 | 20.46 | 31.77 | 38.10 | 44.29 | 51.17 | 60.55 | 61.42 | 55.63 | 45.61 | 39.83 | 22.68 | 41.59 | |||||||||||||
1959 | 23.35 | 21.54 | 29.39 | 37.97 | 46.90 | 53.03 | 61.06 | 62.06 | 57.53 | 48.26 | 40.40 | 32.39 | 42.82 | |||||||||||||
1960 | 27.29 | 29.79 | 26.39 | 37.87 | 46.61 | 54.87 | 60.32 | 60.48 | 55.20 | 46.19 | 40.83 | 24.35 | 42.52 | |||||||||||||
1961 | 21.32 | 25.14 | 30.84 | 36.70 | 44.74 | 55.03 | 59.94 | 61.74 | 59.87 | 50.23 | 39.87 | 30.26 | 42.97 | |||||||||||||
1962 | 24.84 | 25.18 | 31.13 | 39.23 | 44.77 | 55.30 | 59.10 | 59.87 | 55.57 | 47.06 | 37.87 | 26.55 | 42.21 | |||||||||||||
1963 | 25.03 | 21.50 | 31.81 | 36.70 | 45.42 | 55.40 | 61.71 | 61.29 | 53.30 | 48.58 | 43.07 | 25.19 | 42.42 | |||||||||||||
1964 | 26.90 | 24.59 | 30.39 | 36.37 | 45.48 | 55.40 | 61.13 | 59.48 | 54.50 | 47.26 | 37.63 | 32.00 | 42.59 | |||||||||||||
1965 | 22.74 | 23.25 | 29.42 | 34.87 | 45.23 | 53.67 | 60.39 | 61.61 | 50.67 | 42.19 | 34.73 | 28.19 | 40.58 | |||||||||||||
1966 | 23.13 | 23.07 | 28.74 | 32.40 | 42.48 | 52.57 | 58.52 | 59.65 | 50.70 | 42.71 | 39.43 | 29.61 | 40.25 | |||||||||||||
1967 | 27.65 | 22.00 | 26.32 | 33.40 | 40.23 | 50.70 | 59.48 | 59.84 | 53.30 | 46.68 | 35.10 | 30.61 | 40.44 | |||||||||||||
1968 | 21.35 | 19.97 | 30.32 | 37.97 | 44.77 | 52.70 | 59.35 | 58.97 | 53.63 | 50.48 | 38.53 | 26.65 | 41.23 | |||||||||||||
1969 | 26.84 | 29.00 | 31.06 | 38.77 | 45.77 | 55.57 | 61.19 | 61.65 | 55.77 | 45.13 | 40.43 | 29.84 | 43.42 | |||||||||||||
1970 | 17.16 | 24.71 | 30.87 | 37.13 | 46.71 | 55.37 | 61.94 | 61.58 | 55.83 | 46.33 | a | 39.81 | d | 28.29 | 42.14 | |||||||||||
1971 | 20.23 | 24.86 | 30.00 | 34.67 | 44.74 | 52.50 | 62.68 | 61.00 | 61.57 | 54.52 | 39.40 | 31.00 | 43.10 | |||||||||||||
1972 | 25.39 | 21.07 | 28.10 | 32.27 | 42.90 | 52.57 | 58.52 | 57.45 | 54.53 | 39.84 | 35.57 | 31.65 | 39.99 | |||||||||||||
1973 | 21.68 | 22.43 | 32.10 | 37.13 | 44.23 | 55.50 | 60.65 | 61.84 | 52.30 | 43.94 | 35.17 | 27.90 | 41.24 | |||||||||||||
1974 | 23.87 | 20.79 | 28.23 | 36.97 | 42.48 | h | 51.80 | 61.00 | 64.63 | d | 57.30 | 41.45 | 37.40 | 30.45 | 41.26 | a | ||||||||||
1975 | 29.54 | c | 26.73 | b | 26.69 | e | 34.52 | a | 46.32 | 54.27 | 65.45 | 63.97 | 58.10 | 50.06 | 42.97 | 29.58 | 44.02 | |||||||||
1976 | 22.03 | 27.14 | a | 31.03 | b | 38.29 | b | 47.06 | 55.57 | 61.06 | 60.19 | 54.10 | 45.23 | 32.90 | 21.23 | 41.32 | ||||||||||
1977 | 17.58 | 23.00 | 35.13 | 39.36 | b | 46.10 | a | 54.57 | 61.48 | 64.58 | 57.46 | b | 47.90 | 41.13 | 28.61 | 43.08 | ||||||||||
1978 | 23.52 | 20.32 | 28.00 | 37.00 | 46.58 | 59.23 | 62.81 | 66.77 | 53.44 | l | 49.81 | 42.72 | a | 32.29 | 42.64 | a | ||||||||||
1979 | 29.06 | 18.75 | 33.10 | 37.77 | 51.24 | f | 56.10 | j | 63.55 | 62.65 | 56.33 | 47.77 | 43.20 | 33.68 | 42.59 | b | ||||||||||
1980 | 26.84 | 22.86 | 30.48 | 40.77 | 47.55 | 56.07 | a | 64.13 | 65.23 | 56.90 | 47.45 | 36.20 | 24.81 | 43.27 | ||||||||||||
1981 | 15.71 | 30.21 | 29.13 | 40.87 | 46.84 | 56.97 | 62.74 | 62.65 | 57.73 | 45.10 | 39.60 | 30.61 | 43.18 | |||||||||||||
1982 | 18.32 | 25.82 | 31.42 | 35.40 | 45.74 | 53.40 | 61.42 | 60.35 | 55.73 | ----- | z | ----- | z | ----- | z | 43.07 | c | |||||||||
1983 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1984 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1985 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1986 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1987 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1988 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1989 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1990 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1991 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1992 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1993 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1994 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1995 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1996 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1997 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1998 | 32.00 | 31.32 | 33.77 | 39.30 | 47.84 | 55.17 | 60.70 | a | 61.00 | 56.93 | 47.55 | 39.00 | c | 32.58 | 44.76 | |||||||||||
1999 | 25.52 | 28.11 | 31.65 | 38.60 | 47.45 | 57.00 | 64.63 | a | 62.29 | 59.43 | 47.35 | 40.90 | a | 31.81 | 44.56 | |||||||||||
2000 | 22.45 | 28.76 | 33.97 | 40.13 | 46.42 | 55.41 | a | 60.06 | 61.19 | 55.80 | 47.13 | 39.23 | 25.13 | 42.97 | ||||||||||||
2001 | 26.03 | 25.57 | 31.16 | 37.67 | 46.68 | 58.90 | 59.77 | 64.13 | a | 56.11 | c | 47.84 | 41.44 | e | 40.06 | n | 45.03 | a | ||||||||
2002 | 31.25 | c | 28.14 | 33.32 | 40.70 | 46.74 | 54.13 | 62.58 | 62.92 | e | 58.93 | 46.61 | 38.97 | 28.97 | 44.44 | |||||||||||
2003 | 22.71 | 23.79 | 29.23 | 36.63 | 44.68 | 53.76 | a | 62.55 | 65.19 | 57.00 | 47.66 | b | 40.60 | 31.52 | 42.94 | |||||||||||
2004 | 18.00 | 25.79 | 32.29 | 38.47 | 47.42 | 55.10 | 61.61 | 61.42 | 56.57 | 48.13 | 38.57 | 31.45 | 42.90 | |||||||||||||
2005 | 25.68 | 26.86 | 27.90 | b | 37.90 | 43.77 | 54.43 | 61.65 | 63.61 | 57.50 | 50.45 | 40.24 | a | 30.10 | 43.34 | |||||||||||
2006 | 32.65 | 26.29 | 29.94 | 39.00 | 47.45 | 58.10 | 64.13 | 61.29 | 55.20 | 48.32 | 43.77 | 35.71 | 45.15 | |||||||||||||
2007 | 29.29 | 22.68 | 29.71 | 36.33 | 46.13 | a | 55.87 | 63.13 | 60.94 | 57.63 | 51.71 | 38.27 | 29.74 | 43.45 | ||||||||||||
2008 | 27.52 | 26.93 | 31.71 | 38.10 | a | 45.97 | 56.93 | 63.87 | 60.61 | 57.70 | 45.35 | 37.30 | 32.19 | 43.68 | ||||||||||||
2009 | 22.23 | 26.71 | 31.00 | 39.33 | 48.23 | 53.40 | 60.42 | 64.06 | 54.70 | 46.26 | 44.80 | 28.41 | b | 43.30 | ||||||||||||
2010 | 25.32 | 28.36 | 36.19 | 40.50 | 48.65 | 58.70 | 65.26 | 62.19 | 58.97 | 49.26 | 39.30 | 29.32 | 45.17 | |||||||||||||
2011 | 24.06 | 24.21 | 30.81 | 40.47 | 48.45 | 55.00 | 62.87 | a | 63.39 | 58.63 | 51.00 | 42.10 | 33.58 | 44.55 | ||||||||||||
2012 | 31.84 | 30.71 | a | 36.90 | 41.73 | 50.48 | b | 55.41 | a | 63.68 | 65.13 | 56.63 | 51.81 | 39.73 | 35.03 | a | 46.59 | |||||||||
2013 | 26.62 | b | 28.32 | 33.65 | 38.27 | 48.90 | 57.47 | 66.94 | 61.58 | 55.00 | 48.32 | 37.90 | 31.19 | 44.51 | ||||||||||||
2014 | 23.68 | 25.14 | 26.32 | 38.03 | 47.48 | 54.75 | b | 63.19 | 59.06 | 55.90 | 51.97 | 39.43 | 37.55 | 43.54 | ||||||||||||
2015 | 25.48 | 18.14 | 26.68 | 38.30 | 49.42 | 55.73 | 63.23 | 66.68 | 57.94 | n | 49.03 | 44.03 | 43.10 | 43.62 | a | |||||||||||
2016 | 30.97 | 30.14 | 36.81 | 40.20 | 48.87 | a | 56.10 | 63.77 | 64.65 | 59.27 | 49.55 | 41.50 | 31.71 | 46.13 | ||||||||||||
2017 | 33.16 | 30.39 | 28.06 | 42.23 | 47.73 | a | 55.67 | 61.71 | 60.48 | 59.43 | 53.81 | 39.77 | 28.23 | 45.06 | ||||||||||||
2018 | 25.13 | 31.29 | 32.19 | 37.27 | 48.52 | 53.37 | 61.29 | 66.42 | 58.93 | 48.35 | 38.90 | 30.39 | 44.34 | |||||||||||||
2019 | 24.90 | 27.07 | 29.61 | 40.30 | 45.52 | 55.48 | c | 63.32 | 62.97 | 56.07 | 49.73 | a | 37.70 | 31.97 | 43.72 | |||||||||||
2020 | 30.71 | 31.97 | 34.40 | a | 38.07 | 46.32 | 57.80 | 64.65 | 66.03 | 58.78 | c | ----- | z | 45.08 | d | 34.84 | 46.24 | a | ||||||||
2021 | 28.52 | 28.30 | a | ----- | z | 41.43 | g | 48.19 | 60.55 | a | 65.60 | a | 68.10 | 64.00 | b | 56.74 | 40.97 | 38.23 | 49.92 | b | ||||||
2022 | 26.42 | 31.04 | 34.90 | 42.37 | 50.29 | 57.73 | 66.84 | 68.23 | 60.33 | 53.17 | a | 45.60 | 33.96 | e | 47.57 | |||||||||||
2023 | 35.34 | b | 27.96 | 34.06 | 42.70 | 46.90 | a | 55.43 | 65.13 | 62.70 | a | 59.76 | a | 51.74 | 37.03 | 36.94 | 46.31 | |||||||||
2024 | 29.42 | 29.86 | 36.71 | 40.42 | k | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 32.00 | i | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 25.73 | 25.97 | 31.00 | 38.16 | 46.29 | 55.16 | 62.14 | 62.30 | 56.51 | 48.10 | 39.72 | 30.71 | 43.35 | |||||||||||||
S.D. | 4.29 | 3.44 | 2.66 | 2.25 | 1.92 | 2.00 | 1.96 | 2.33 | 2.48 | 3.05 | 2.61 | 3.90 | 1.59 | |||||||||||||
SKEW | -0.14 | -0.33 | 0.26 | -0.41 | -0.47 | 0.21 | 0.40 | 0.63 | 0.18 | 0.04 | -0.01 | 0.07 | 0.17 | |||||||||||||
MAX | 35.34 | 31.97 | 36.90 | 42.70 | 50.48 | 60.55 | 66.94 | 68.23 | 64.00 | 56.74 | 45.60 | 43.10 | 47.57 | |||||||||||||
MIN | 15.71 | 18.14 | 26.32 | 32.27 | 40.23 | 50.70 | 58.52 | 57.45 | 50.67 | 39.84 | 32.90 | 21.23 | 39.99 | |||||||||||||
YRS | 62 | 62 | 61 | 60 | 59 | 60 | 61 | 61 | 59 | 59 | 60 | 59 | 53 |