YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1930 | 19.38 | r | 44.81 | a | 37.29 | ----- | z | 53.07 | a | ----- | z | ----- | z | ----- | z | ----- | z | 47.30 | a | 39.57 | b | 33.03 | 42.51 | f | ||
1931 | 34.03 | 39.14 | 34.29 | c | 42.82 | b | 54.00 | 56.54 | b | ----- | z | 57.45 | ----- | z | 56.65 | 39.43 | b | 33.43 | c | 44.78 | b | |||||
1932 | 33.06 | 42.00 | a | 33.77 | i | 51.90 | a | 56.07 | b | 63.20 | 64.61 | 65.10 | 56.80 | 44.68 | 38.07 | 27.26 | 49.34 | a | ||||||||
1933 | 29.81 | e | 23.19 | g | 40.77 | 40.73 | 52.00 | k | 63.86 | h | 68.97 | 74.00 | 70.57 | 63.97 | 52.78 | c | 30.16 | 52.42 | c | |||||||
1934 | 25.94 | 31.14 | 32.27 | a | 48.48 | a | 52.48 | 60.13 | 59.23 | 56.26 | 50.70 | 51.35 | 38.83 | 28.70 | a | 44.63 | ||||||||||
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 | 48.19 | 38.93 | 32.81 | 39.98 | i | |||
1943 | 29.71 | 33.07 | a | 34.19 | 48.83 | 56.33 | y | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 36.45 | h | |||
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 | 67.78 | l | 67.13 | 67.71 | 60.03 | 49.90 | 33.70 | 36.71 | 52.53 | f | ||||||
1949 | 23.68 | 34.43 | 40.10 | 45.57 | 57.97 | 64.80 | 68.26 | 64.23 | 59.23 | 45.45 | 38.37 | 28.48 | 47.55 | |||||||||||||
1950 | 33.71 | 36.79 | 37.19 | 47.17 | 53.87 | 64.60 | 66.52 | 64.87 | 59.70 | 52.42 | 35.57 | 31.90 | 48.69 | |||||||||||||
1951 | 26.43 | a | 32.46 | 38.55 | 46.50 | 55.32 | 64.43 | 69.65 | 67.97 | 59.13 | 52.65 | 35.70 | 33.26 | 48.50 | ||||||||||||
1952 | 36.10 | 34.24 | 38.71 | 47.97 | 55.77 | 67.50 | 66.77 | 70.23 | 60.07 | 45.55 | 34.87 | 29.52 | 48.94 | |||||||||||||
1953 | 37.90 | 31.96 | 43.68 | 47.83 | 55.58 | 68.67 | 70.90 | 68.23 | 59.53 | 49.71 | 38.87 | 26.84 | 49.98 | |||||||||||||
1954 | 33.61 | 38.14 | 41.42 | 52.30 | 55.90 | 65.80 | 69.84 | 67.87 | 63.40 | 52.52 | 39.07 | 31.61 | 50.96 | |||||||||||||
1955 | 30.71 | 29.81 | a | 41.03 | 48.93 | 56.84 | 61.90 | 66.16 | 66.35 | 61.93 | 49.29 | 38.00 | 34.06 | 48.75 | ||||||||||||
1956 | 32.03 | 29.10 | 39.06 | 46.10 | 58.16 | 67.77 | 69.26 | 66.77 | 60.10 | 49.81 | 31.57 | 32.26 | 48.50 | |||||||||||||
1957 | 32.52 | 44.54 | 41.35 | 45.83 | 55.65 | 65.23 | 69.58 | 69.26 | 60.81 | c | 49.44 | f | 36.87 | 31.90 | 50.32 | a | ||||||||||
1958 | 28.71 | 34.36 | 37.26 | 47.57 | 58.10 | 67.57 | 67.45 | 66.55 | 60.60 | 49.71 | 37.03 | 26.42 | 48.44 | |||||||||||||
1959 | 26.29 | 33.29 | 36.84 | 47.73 | 59.71 | 66.63 | 68.55 | 70.81 | 63.13 | 49.10 | 33.63 | 34.00 | 49.14 | |||||||||||||
1960 | 29.35 | 32.21 | 38.65 | 47.00 | 55.10 | 66.37 | 66.39 | 66.94 | 61.33 | 51.23 | 38.50 | 27.42 | 48.37 | |||||||||||||
1961 | 26.32 | 32.86 | 39.63 | a | 45.37 | 57.13 | 63.50 | 66.06 | 66.32 | 60.60 | 49.13 | 36.33 | 32.00 | 47.94 | ||||||||||||
1962 | 25.29 | 39.79 | 37.29 | 50.47 | 59.13 | 64.50 | 69.45 | 67.77 | 63.70 | 52.10 | 39.13 | 31.16 | 49.98 | |||||||||||||
1963 | 22.71 | 33.61 | 38.71 | 54.00 | 59.81 | 65.87 | 71.97 | 69.81 | 62.40 | 51.87 | 38.33 | 27.61 | 49.72 | |||||||||||||
1964 | 27.06 | 25.86 | 38.58 | 48.07 | 59.71 | 66.37 | 71.87 | 70.81 | 63.43 | 47.90 | 37.13 | 33.06 | 49.16 | |||||||||||||
1965 | 33.84 | 29.11 | 33.90 | 50.80 | 57.90 | 70.00 | 75.58 | 69.42 | 62.67 | 49.61 | 44.27 | 36.19 | 51.11 | |||||||||||||
1966 | 26.87 | 29.36 | 40.77 | 52.13 | 62.32 | 66.77 | 75.06 | 69.23 | 66.20 | 44.19 | 38.03 | 25.61 | 49.71 | |||||||||||||
1967 | 23.67 | a | 30.96 | 44.87 | 54.97 | 56.90 | 67.27 | 70.42 | 67.84 | 60.90 | 48.03 | 40.93 | 28.74 | 49.63 | ||||||||||||
1968 | 33.19 | 35.21 | 39.52 | 48.93 | 58.19 | 66.93 | 68.55 | 68.29 | 58.13 | 49.61 | 37.87 | 28.77 | 49.43 | |||||||||||||
1969 | 33.94 | 35.00 | 32.45 | 50.07 | 56.32 | 65.50 | 71.26 | 70.90 | 62.90 | 49.26 | 37.47 | 31.87 | 49.74 | |||||||||||||
1970 | 26.52 | 33.93 | 35.52 | 44.87 | 51.39 | 62.63 | 67.81 | 66.52 | 60.37 | 44.61 | 35.17 | 32.10 | 46.78 | |||||||||||||
1971 | 30.55 | 30.25 | 38.13 | 45.67 | 56.13 | 63.93 | 68.16 | 63.71 | 57.47 | 48.55 | 36.73 | 31.26 | 47.54 | |||||||||||||
1972 | 25.71 | 31.83 | 46.23 | 53.23 | 56.94 | 64.03 | 67.10 | 65.26 | 60.20 | 49.16 | 32.00 | 27.16 | 48.24 | |||||||||||||
1973 | 29.84 | 30.07 | 38.06 | 40.17 | 53.48 | 61.13 | 66.55 | 64.29 | 59.30 | 46.16 | 37.57 | 27.10 | 46.14 | |||||||||||||
1974 | 27.65 | 28.96 | 43.29 | 49.93 | 62.06 | 67.23 | 70.03 | 66.00 | 56.70 | 50.84 | 37.63 | 32.52 | 49.40 | |||||||||||||
1975 | 31.48 | 33.18 | 35.94 | 41.03 | 50.81 | 62.07 | 65.52 | 64.29 | 55.63 | 46.29 | 32.30 | 27.03 | a | 45.46 | ||||||||||||
1976 | 26.16 | 35.83 | 40.71 | 47.40 | 54.65 | 65.70 | 66.23 | 65.65 | 60.33 | 43.13 | 30.67 | 25.26 | 46.81 | |||||||||||||
1977 | 25.58 | 32.32 | 35.45 | 48.33 | 58.77 | 64.77 | 69.03 | 70.65 | 65.43 | 51.06 | 36.83 | 34.03 | 49.36 | |||||||||||||
1978 | 26.68 | 32.04 | 41.81 | 54.03 | 60.61 | 67.57 | 72.32 | 67.55 | 61.20 | 48.90 | 42.18 | b | 28.16 | 50.25 | ||||||||||||
1979 | 26.42 | 30.11 | 38.58 | 47.03 | 57.23 | 61.83 | 70.03 | 65.03 | 59.03 | 48.65 | 33.43 | 29.58 | 47.25 | |||||||||||||
1980 | 30.65 | 31.79 | 35.45 | 42.13 | 54.94 | 67.10 | 71.19 | 66.97 | 62.73 | 45.77 | 32.40 | 30.26 | 47.62 | |||||||||||||
1981 | 29.94 | 28.57 | 37.94 | 47.07 | 54.55 | 62.57 | 67.52 | 63.48 | 57.70 | 47.58 | ----- | z | ----- | z | 49.69 | b | ||||||||||
1982 | ----- | z | ----- | z | 39.84 | 47.60 | 54.55 | 63.70 | 67.61 | 67.52 | 61.50 | 45.03 | 37.60 | 29.26 | 51.42 | b | ||||||||||
1983 | 24.97 | 32.04 | 39.52 | 41.63 | 51.52 | 60.90 | 67.10 | 66.48 | 61.77 | 52.00 | 41.07 | 23.10 | a | 46.84 | ||||||||||||
1984 | 26.52 | 30.17 | 36.65 | 45.07 | 58.26 | 64.93 | 64.77 | 64.71 | 53.70 | 46.77 | 36.37 | 32.26 | 46.68 | |||||||||||||
1985 | 25.03 | 29.21 | 39.52 | 47.70 | 55.84 | 61.83 | 64.90 | 66.61 | 59.17 | 49.13 | 40.03 | 24.10 | 46.92 | |||||||||||||
1986 | 28.16 | 36.68 | 40.52 | 50.40 | 54.77 | 63.73 | 65.52 | 66.45 | 60.73 | 49.52 | 35.60 | 30.68 | 48.56 | |||||||||||||
1987 | 26.42 | 33.25 | 34.68 | 42.03 | 54.61 | 61.77 | 64.90 | 66.68 | 57.07 | 49.39 | 34.70 | 26.10 | 45.97 | |||||||||||||
1988 | 24.84 | 30.76 | 33.90 | 45.03 | 55.03 | 63.60 | 66.90 | 66.58 | 57.77 | 49.03 | 36.93 | 28.42 | 46.57 | |||||||||||||
1989 | 28.32 | 31.86 | 39.77 | 49.10 | 58.77 | 64.53 | 69.00 | 67.65 | 58.13 | 48.42 | 37.70 | 23.23 | 48.04 | |||||||||||||
1990 | 28.32 | 31.96 | 40.19 | 51.37 | 58.23 | 70.37 | 68.00 | 64.74 | 63.27 | 47.39 | 39.70 | 30.13 | 49.47 | |||||||||||||
1991 | 30.42 | 37.18 | 41.32 | 48.10 | 59.00 | 64.93 | 67.26 | 67.03 | 57.87 | 48.00 | 34.27 | 32.94 | 49.03 | |||||||||||||
1992 | 28.65 | 34.52 | 39.45 | 47.13 | 55.55 | 61.13 | 67.03 | 65.16 | 59.17 | 49.68 | 31.57 | 29.81 | 47.40 | |||||||||||||
1993 | 32.77 | 34.57 | 39.10 | 48.30 | 55.74 | 65.77 | 71.29 | 68.00 | 58.67 | 46.97 | 34.33 | 30.10 | a | 48.80 | ||||||||||||
1994 | 28.48 | 31.64 | 42.48 | 49.33 | 59.61 | 68.87 | 70.16 | 68.65 | 60.07 | 50.68 | 40.43 | 34.74 | 50.43 | |||||||||||||
1995 | 33.03 | 38.93 | 42.10 | 46.33 | 58.19 | 64.43 | 69.48 | 69.45 | 61.27 | 48.03 | 39.27 | 33.16 | 50.31 | |||||||||||||
1996 | 29.39 | 37.07 | 34.84 | 47.57 | 62.10 | 67.80 | 70.74 | 67.52 | 59.67 | 47.35 | 35.77 | 31.29 | 49.26 | |||||||||||||
1997 | 29.77 | 32.75 | 41.23 | 44.63 | 56.65 | 63.73 | 68.48 | 67.84 | 63.17 | 48.45 | 35.33 | 27.16 | 48.27 | |||||||||||||
1998 | 31.32 | 35.29 | 38.77 | 43.93 | 59.03 | 65.57 | 71.55 | 67.77 | 65.10 | 52.81 | 40.27 | 30.42 | 50.15 | |||||||||||||
1999 | 33.00 | 36.14 | 41.35 | 49.20 | 57.19 | 66.83 | 69.65 | 70.06 | 61.20 | 47.10 | 39.80 | ----- | z | 51.96 | a | |||||||||||
2000 | 32.13 | 38.66 | 42.10 | ----- | z | 61.87 | ----- | z | ----- | z | 67.46 | e | 60.70 | 50.74 | 34.13 | 28.23 | 46.22 | c | ||||||||
2001 | 28.65 | 34.64 | 40.45 | 48.57 | 59.45 | 67.37 | 71.00 | 68.81 | 62.73 | 49.32 | 41.73 | 29.19 | 50.16 | |||||||||||||
2002 | 30.48 | 30.75 | 36.45 | 54.20 | 58.52 | 67.97 | 68.84 | 69.45 | 60.53 | 51.52 | 37.80 | 31.77 | 49.86 | |||||||||||||
2003 | 30.74 | 35.14 | 40.87 | 50.10 | 58.35 | 65.43 | 67.97 | 69.52 | 60.97 | 52.74 | 41.47 | 28.90 | 50.18 | |||||||||||||
2004 | 32.77 | 31.21 | 45.35 | 48.20 | 58.13 | 63.07 | 66.77 | 65.19 | 59.23 | 52.32 | 37.00 | 29.77 | 49.09 | |||||||||||||
2005 | 34.06 | 37.14 | 37.29 | 43.77 | 56.10 | 63.73 | 67.52 | 66.35 | 62.13 | 50.42 | 35.20 | 27.94 | 48.47 | |||||||||||||
2006 | 31.77 | 33.11 | 42.03 | 52.27 | 59.32 | 65.93 | 69.97 | 68.42 | 58.17 | 48.35 | 35.87 | 27.84 | 49.42 | |||||||||||||
2007 | 28.68 | 32.43 | 41.32 | 43.90 | 55.84 | 63.30 | 66.77 | 67.52 | 62.97 | 49.19 | 36.37 | 29.81 | 48.17 | |||||||||||||
2008 | 27.32 | 33.17 | 38.23 | 44.50 | 55.87 | 67.30 | 67.77 | 66.58 | 58.20 | 47.10 | 34.37 | 28.45 | 47.41 | |||||||||||||
2009 | 27.45 | 34.07 | 41.13 | a | 47.77 | 59.32 | 67.07 | 69.03 | 66.94 | 58.52 | a | 47.77 | 36.10 | 27.26 | 48.54 | |||||||||||
2010 | 27.00 | 32.00 | 36.32 | 47.67 | 55.29 | 66.57 | 68.19 | 66.42 | 62.97 | 48.52 | 31.57 | 29.68 | 47.68 | |||||||||||||
2011 | 24.10 | 27.61 | 41.00 | 50.50 | 54.71 | 66.07 | 71.06 | 73.00 | 61.07 | 47.94 | 37.33 | 28.35 | 48.56 | |||||||||||||
2012 | 29.94 | 31.45 | 39.42 | 51.03 | 58.52 | 66.57 | 69.13 | 68.48 | 59.43 | 48.42 | 37.83 | 29.48 | 49.14 | |||||||||||||
2013 | 29.03 | 31.00 | 39.19 | 45.73 | 56.13 | 68.33 | 68.71 | 68.13 | 62.10 | 45.52 | 35.63 | 28.90 | 48.20 | |||||||||||||
2014 | 25.35 | 33.82 | 38.74 | 47.17 | 55.03 | 67.70 | 71.06 | 69.71 | 63.60 | 51.32 | 35.17 | 33.13 | 49.32 | |||||||||||||
2015 | 29.06 | 33.79 | 39.77 | 46.53 | 53.29 | 65.47 | 70.03 | 69.26 | 64.97 | 53.06 | 36.56 | c | 29.20 | a | 49.25 | |||||||||||
2016 | 28.03 | 31.34 | 39.65 | 46.73 | 54.71 | 65.37 | 71.48 | 66.87 | 61.20 | 49.68 | 41.36 | b | 31.35 | 48.98 | ||||||||||||
2017 | 32.74 | 38.68 | 42.65 | 48.63 | 55.71 | 66.07 | 69.35 | 67.29 | 61.00 | 48.45 | 40.50 | 28.97 | 50.00 | |||||||||||||
2018 | 22.55 | 31.25 | 40.87 | 45.33 | 58.65 | 68.40 | 70.13 | 68.39 | 60.87 | 51.97 | 34.13 | 32.06 | 48.72 | |||||||||||||
2019 | 30.00 | 34.68 | 40.26 | 47.90 | 55.81 | 64.40 | 68.97 | 71.71 | 66.00 | 46.00 | 36.07 | 31.84 | 49.47 | |||||||||||||
2020 | 30.55 | 32.41 | 46.16 | 48.77 | 58.10 | 66.33 | 72.61 | 70.39 | 56.80 | 45.06 | 39.13 | 26.32 | 49.39 | |||||||||||||
2021 | 28.42 | 27.71 | 39.06 | 46.97 | 59.06 | 66.97 | 67.74 | 66.42 | 61.10 | 48.84 | 36.00 | 37.84 | 48.84 | |||||||||||||
2022 | 24.58 | 23.08 | b | 34.37 | a | 49.37 | 58.43 | a | 67.87 | 72.19 | 69.74 | 62.33 | 49.45 | 35.23 | 33.68 | 48.36 | ||||||||||
2023 | 32.29 | 32.11 | 40.81 | 45.33 | 57.32 | 67.77 | 72.52 | 70.71 | 65.50 | 52.74 | 41.00 | 32.71 | 50.90 | |||||||||||||
2024 | 29.58 | 36.79 | 43.71 | 46.11 | l | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 36.69 | i | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 29.13 | 33.30 | 39.23 | 47.65 | 56.84 | 65.30 | 68.77 | 67.40 | 60.71 | 49.19 | 37.21 | 30.11 | 48.66 | |||||||||||||
S.D. | 3.26 | 3.72 | 2.98 | 3.16 | 2.46 | 2.45 | 2.51 | 2.70 | 2.91 | 2.96 | 3.28 | 2.95 | 1.32 | |||||||||||||
SKEW | 0.17 | 0.60 | -0.11 | -0.04 | -0.04 | -0.69 | -0.30 | -1.17 | -0.05 | 1.51 | 1.19 | 0.03 | -0.66 | |||||||||||||
MAX | 37.90 | 44.81 | 46.23 | 54.97 | 62.32 | 70.37 | 75.58 | 74.00 | 70.57 | 63.97 | 52.78 | 37.84 | 51.11 | |||||||||||||
MIN | 22.55 | 23.08 | 32.27 | 40.17 | 50.81 | 56.54 | 59.23 | 56.26 | 50.70 | 43.13 | 30.67 | 23.10 | 44.63 | |||||||||||||
YRS | 80 | 80 | 81 | 79 | 79 | 77 | 78 | 80 | 79 | 81 | 81 | 80 | 71 |