YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1928 | ----- | z | ----- | z | ----- | z | ----- | z | 70.62 | w | 68.54 | q | 74.53 | l | 78.76 | n | 67.61 | b | 52.50 | g | ----- | z | ----- | z | 67.61 | k |
1929 | ----- | z | ----- | z | ----- | z | 60.43 | w | 64.00 | a | 74.77 | d | 81.38 | g | 79.38 | e | 69.30 | c | 58.74 | l | ----- | z | ----- | z | 71.86 | h |
1930 | ----- | z | ----- | z | ----- | z | 58.17 | g | 67.61 | c | 78.63 | 80.36 | c | 86.35 | h | 72.61 | g | 53.14 | j | ----- | z | ----- | z | 75.53 | i | |
1931 | ----- | z | ----- | z | ----- | z | 58.82 | b | 64.94 | 78.47 | 85.32 | 75.36 | c | 75.80 | 63.97 | a | 44.93 | b | 34.04 | h | 68.45 | d | ||||
1932 | 28.62 | e | 28.31 | 29.00 | 51.62 | a | 66.62 | b | 79.38 | a | 80.87 | 81.48 | 69.13 | 55.00 | d | ----- | z | ----- | z | 57.00 | b | |||||
1933 | ----- | z | ----- | z | ----- | z | 49.70 | c | 66.81 | 85.87 | 85.45 | 77.90 | 74.37 | 52.66 | b | ----- | z | ----- | z | 70.39 | e | |||||
1934 | ----- | z | ----- | z | ----- | z | 47.15 | c | 73.63 | a | 76.23 | 80.90 | 75.06 | 63.96 | b | 58.52 | ----- | z | ----- | z | 67.92 | e | ||||
1935 | ----- | z | ----- | z | ----- | z | 49.34 | a | 61.81 | 69.52 | a | 82.77 | 74.71 | 66.00 | a | 55.38 | b | ----- | z | ----- | z | 65.65 | e | |||
1936 | ----- | z | ----- | z | ----- | z | 43.50 | 68.13 | 71.57 | 86.90 | 77.94 | 72.41 | a | 51.17 | a | ----- | z | ----- | z | 67.37 | e | |||||
1937 | ----- | z | ----- | z | ----- | z | 48.61 | b | 70.26 | 78.38 | a | 82.90 | 83.06 | 67.90 | a | 52.23 | a | ----- | z | ----- | z | 69.05 | e | |||
1938 | ----- | z | ----- | z | ----- | z | 54.54 | d | 63.20 | a | 75.27 | 78.74 | 82.25 | c | 70.83 | f | 61.45 | b | 33.48 | a | 24.79 | b | 59.22 | d | ||
1939 | 25.37 | a | 20.32 | 32.96 | c | 50.04 | b | 70.55 | 75.13 | 82.23 | 76.10 | 67.41 | a | 52.20 | a | 45.57 | 36.40 | a | 52.86 | |||||||
1940 | 16.57 | a | 28.59 | 33.03 | a | 51.21 | b | 61.87 | 74.00 | 81.06 | 73.13 | 69.47 | 60.65 | 35.79 | a | 28.58 | g | 53.22 | a | |||||||
1941 | 24.73 | a | 30.39 | e | 33.63 | a | 53.83 | 65.10 | 70.00 | 76.74 | 72.33 | a | 63.97 | 52.58 | 37.53 | 31.32 | 51.01 | |||||||||
1942 | 24.74 | 23.22 | a | 38.58 | 49.10 | j | 60.77 | 72.03 | 76.42 | 74.29 | 62.57 | b | 55.84 | 37.10 | 19.23 | 49.53 | a | |||||||||
1943 | 15.52 | 25.25 | 28.06 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 33.07 | 25.50 | c | 25.48 | g | ||||
1944 | 29.32 | 22.79 | 30.00 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 41.37 | 22.54 | e | 29.20 | g | ||||
1945 | 16.81 | 24.04 | 45.68 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 18.93 | b | 26.36 | h | |||
1946 | 21.79 | b | 21.14 | 46.20 | a | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 24.55 | 28.42 | h | ||
1947 | 25.48 | 21.21 | 33.32 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 26.70 | j | 25.23 | 26.31 | h | ||||
1948 | 19.13 | a | 22.79 | a | 32.87 | a | ----- | z | ----- | z | ----- | z | ----- | z | 81.19 | ----- | z | ----- | z | ----- | z | 25.60 | a | 36.32 | g | |
1949 | 24.21 | b | 22.67 | a | 31.70 | a | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 26.19 | i |
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 | 77.21 | c | ----- | z | ----- | z | ----- | z | ----- | z | 77.21 | k |
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 | 27.26 | a | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 55.92 | f | ----- | z | ----- | z | 27.26 | k |
1971 | ----- | z | 26.64 | 36.16 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 31.40 | j | ||
1972 | ----- | z | ----- | z | ----- | z | 48.40 | 72.16 | 76.55 | a | 76.45 | 77.70 | a | ----- | z | 52.61 | ----- | z | ----- | z | 67.31 | f | ||||
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 | 53.23 | a | ----- | z | 20.44 | f | 53.23 | k |
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 | 13.35 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 13.35 | k | |
1980 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1981 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1982 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
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 | 33.70 | 33.04 | d | 33.37 | j | |
1998 | 24.76 | b | 39.96 | 37.13 | a | 56.17 | a | 74.40 | a | 71.48 | a | 79.39 | 80.48 | 72.93 | 58.74 | 42.24 | a | 29.61 | 55.61 | |||||||
1999 | 18.97 | 34.07 | 42.35 | 54.00 | 68.87 | a | 74.76 | a | 82.10 | 74.03 | 67.43 | 53.29 | 47.93 | 29.45 | 53.94 | |||||||||||
2000 | 23.94 | 34.55 | 47.29 | 51.67 | 67.87 | a | 70.57 | 77.32 | 76.58 | 67.52 | a | 60.00 | 37.70 | 15.86 | c | 52.57 | ||||||||||
2001 | 27.24 | b | 20.86 | 36.27 | a | 52.41 | a | 67.55 | 74.93 | 80.65 | 80.06 | 67.00 | 54.29 | 50.60 | 33.90 | 53.81 | ||||||||||
2002 | 27.81 | 32.57 | 30.45 | 49.57 | 60.10 | 75.00 | 82.87 | 75.19 | 69.50 | 45.48 | 36.17 | 29.48 | 51.18 | |||||||||||||
2003 | 18.68 | 21.35 | b | 35.03 | 50.57 | 65.55 | 72.93 | 78.58 | 80.00 | 69.10 | 55.55 | 37.00 | 30.84 | 51.26 | ||||||||||||
2004 | 16.07 | a | 29.38 | c | 39.65 | 51.71 | b | 62.41 | b | 71.03 | a | ----- | z | 70.39 | ----- | z | 56.26 | 42.93 | 25.53 | a | 46.54 | b | ||||
2005 | 18.23 | 29.79 | 37.10 | 57.93 | 61.16 | 77.40 | 81.24 | b | 76.77 | 72.50 | 56.87 | a | 42.15 | d | 25.35 | 53.04 | ||||||||||
2006 | 31.81 | 25.46 | 39.77 | a | 59.87 | 66.19 | 76.41 | a | 85.74 | 77.84 | 66.07 | 51.35 | ----- | z | 31.17 | b | 55.61 | a | ||||||||
2007 | 24.19 | 19.54 | b | 41.39 | ----- | z | 70.21 | b | 79.53 | 80.80 | a | 78.06 | 68.87 | 56.30 | a | 37.90 | 22.06 | 52.62 | a | |||||||
2008 | 20.73 | a | 22.21 | 33.74 | 49.30 | ----- | z | ----- | z | 78.84 | 78.42 | 67.73 | 55.53 | a | 38.38 | a | 19.23 | a | 46.41 | b | ||||||
2009 | 13.97 | a | 27.46 | 36.26 | 50.73 | 67.87 | 73.30 | 72.65 | 73.06 | 72.27 | 45.97 | 46.27 | 20.55 | 50.03 | ||||||||||||
2010 | 19.55 | 26.75 | 47.16 | 61.23 | 68.39 | 70.90 | 79.10 | 78.13 | 61.00 | 57.10 | 39.23 | 21.00 | 52.46 | |||||||||||||
2011 | 15.52 | 24.14 | 35.87 | 49.37 | 62.48 | 70.93 | 81.32 | 76.26 | 65.10 | 58.81 | 41.07 | 29.65 | 50.88 | |||||||||||||
2012 | 26.10 | 31.28 | 50.06 | 53.53 | 67.19 | 76.07 | 83.45 | 76.32 | 67.07 | 50.13 | 37.83 | 26.03 | 53.76 | |||||||||||||
2013 | 23.45 | 24.11 | 32.45 | 43.03 | 61.65 | 71.57 | 75.90 | 76.48 | 68.47 | 51.87 | 36.00 | 15.61 | 48.38 | |||||||||||||
2014 | 13.81 | 18.11 | 33.74 | 44.27 | 63.97 | 74.57 | 74.58 | 72.68 | 64.83 | 53.06 | 29.13 | 26.39 | 47.43 | |||||||||||||
2015 | 20.55 | 15.32 | 41.61 | 53.93 | 64.71 | 73.37 | 78.48 | 74.47 | a | 70.67 | 54.77 | 44.23 | 32.19 | 52.03 | ||||||||||||
2016 | 21.39 | 28.14 | 42.19 | 48.93 | 66.35 | 72.27 | 77.13 | 75.23 | 67.23 | 56.45 | 47.47 | 23.52 | 52.19 | |||||||||||||
2017 | 24.26 | 33.50 | 37.29 | 52.30 | 61.68 | 73.77 | 76.52 | 70.33 | a | 69.93 | 54.97 | 35.27 | 19.26 | 50.76 | ||||||||||||
2018 | 21.81 | 22.75 | 37.42 | 43.97 | 72.40 | a | 74.53 | 78.32 | 75.16 | 64.17 | g | 47.42 | 30.39 | b | 28.45 | 48.42 | a | |||||||||
2019 | 16.55 | 18.89 | 34.84 | 48.40 | 59.35 | 73.10 | 79.23 | 74.10 | 66.73 | 49.94 | 30.60 | 26.39 | 48.18 | |||||||||||||
2020 | 24.94 | 27.55 | 40.06 | 48.93 | 63.87 | 77.07 | 80.48 | 75.58 | 64.03 | 46.29 | 43.33 | 27.58 | 51.64 | |||||||||||||
2021 | 25.03 | 18.29 | 44.74 | 50.13 | 64.77 | 78.33 | 79.48 | 78.13 | 70.27 | 59.68 | 39.60 | 28.06 | 53.04 | |||||||||||||
2022 | 14.81 | 19.21 | 34.65 | 43.82 | b | 65.85 | e | 75.97 | 77.81 | 75.16 | 68.03 | 56.29 | 39.43 | 21.16 | 49.35 | |||||||||||
2023 | 24.58 | 27.04 | 34.39 | 47.26 | c | 67.19 | 76.57 | 76.81 | 75.45 | 70.40 | 54.45 | 40.13 | 36.29 | 52.55 | ||||||||||||
2024 | 23.55 | 38.03 | 41.77 | 52.40 | 61.75 | w | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 38.94 | h | ||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 21.70 | 25.73 | 37.40 | 50.85 | 65.99 | 74.80 | 79.90 | 76.51 | 68.23 | 54.46 | 39.28 | 25.99 | 51.65 | |||||||||||||
S.D. | 4.74 | 5.59 | 5.41 | 4.37 | 3.76 | 3.27 | 3.17 | 2.96 | 3.21 | 4.18 | 5.22 | 5.33 | 2.01 | |||||||||||||
SKEW | -0.09 | 0.54 | 0.50 | 0.34 | 0.33 | 0.84 | 0.16 | 0.15 | 0.12 | -0.17 | 0.11 | -0.01 | -0.39 | |||||||||||||
MAX | 31.81 | 39.96 | 50.06 | 61.23 | 74.40 | 85.87 | 86.90 | 83.06 | 75.80 | 63.97 | 50.60 | 36.40 | 55.61 | |||||||||||||
MIN | 13.35 | 15.32 | 28.06 | 43.03 | 59.35 | 69.52 | 72.65 | 70.33 | 61.00 | 45.48 | 29.13 | 15.61 | 47.43 | |||||||||||||
YRS | 40 | 41 | 40 | 38 | 40 | 40 | 39 | 42 | 37 | 40 | 34 | 37 | 23 |