YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1920 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1921 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1922 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1923 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1924 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1925 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1926 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1927 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1928 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1929 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1930 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1931 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1932 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1933 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1934 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
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 | 59.28 | g | 68.29 | 78.10 | 80.68 | 78.44 | 70.32 | 60.52 | 45.73 | b | 43.37 | 65.68 | d | |||||||
1962 | 37.27 | 48.55 | 46.08 | 61.75 | 67.52 | 75.15 | 77.05 | 79.27 | 72.28 | 62.19 | 52.03 | 43.71 | 60.24 | |||||||||||||
1963 | 38.55 | 46.38 | 51.10 | 59.43 | 69.85 | 74.65 | 82.48 | 76.77 | 74.43 | 64.19 | 50.70 | 40.27 | 60.73 | |||||||||||||
1964 | 35.87 | 37.50 | 48.08 | 57.28 | 68.24 | 75.57 | 81.05 | 79.24 | 71.17 | 62.21 | 48.33 | 41.66 | 58.85 | |||||||||||||
1965 | 44.11 | 42.86 | 48.15 | 58.75 | 66.45 | 73.42 | 81.00 | 78.23 | 69.95 | 60.68 | 54.15 | 42.90 | 60.05 | |||||||||||||
1966 | 37.47 | 39.23 | 51.95 | 60.17 | 69.58 | 76.02 | 81.58 | 77.50 | 71.45 | 59.76 | 52.22 | 40.97 | 59.82 | |||||||||||||
1967 | 40.31 | 46.30 | 55.45 | 60.02 | 65.63 | 75.28 | 80.81 | 76.34 | 70.55 | 61.06 | 51.10 | 38.44 | 60.11 | |||||||||||||
1968 | 40.89 | 48.33 | 50.10 | 55.88 | 66.77 | 76.75 | 77.11 | 74.29 | 69.67 | 62.03 | 48.43 | 38.98 | 59.10 | |||||||||||||
1969 | 45.56 | 44.62 | 46.95 | 61.12 | 67.97 | 75.87 | 80.58 | 81.95 | 72.93 | 61.27 | 48.12 | 43.66 | 60.88 | |||||||||||||
1970 | 41.05 | 46.52 | 49.73 | 55.83 | 68.47 | 76.37 | 80.11 | 78.63 | 71.05 | 56.18 | 49.87 | 44.77 | 59.88 | |||||||||||||
1971 | 43.08 | 45.43 | 53.56 | 57.67 | 65.97 | 76.52 | 80.45 | 75.81 | 70.55 | 58.34 | 49.82 | 41.58 | 59.90 | |||||||||||||
1972 | 43.50 | 47.88 | 59.00 | 60.38 | 66.81 | 76.21 | a | 80.19 | 76.02 | 70.68 | 63.35 | 45.53 | 42.11 | 60.97 | ||||||||||||
1973 | 38.73 | 43.48 | 47.89 | 54.15 | 66.68 | 75.97 | 79.06 | 78.24 | 73.57 | 61.89 | 50.93 | 42.42 | 59.42 | |||||||||||||
1974 | 42.73 | 43.23 | 55.97 | 60.22 | 70.77 | 80.40 | 77.94 | 75.10 | 68.97 | 61.34 | 49.03 | 39.48 | 60.43 | |||||||||||||
1975 | 40.76 | 44.21 | 50.19 | 54.08 | 64.76 | 76.88 | 77.81 | 78.66 | 69.75 | 62.58 | 50.48 | 44.35 | 59.54 | |||||||||||||
1976 | 42.58 | 50.47 | 53.27 | 60.17 | 68.23 | 77.75 | 78.21 | 77.69 | 69.72 | 56.18 | 44.58 | 39.87 | 59.89 | |||||||||||||
1977 | 41.15 | 46.36 | 48.13 | 57.45 | 62.82 | 76.50 | 79.92 | 81.44 | 74.63 | 62.26 | 51.43 | 45.44 | 60.63 | |||||||||||||
1978 | 42.24 | 43.80 | 53.74 | 60.65 | 67.85 | 79.60 | 83.31 | 77.74 | 69.63 | 61.98 | 50.13 | 39.02 | 60.81 | |||||||||||||
1979 | 38.73 | 45.46 | 50.15 | 59.03 | 65.56 | 74.87 | 82.23 | 75.58 | 72.45 | 64.10 | 46.72 | 42.92 | 59.82 | |||||||||||||
1980 | 45.24 | 47.98 | 50.73 | 57.88 | 65.55 | 80.60 | 82.50 | 77.56 | 72.13 | 57.73 | 47.22 | 46.10 | 60.93 | |||||||||||||
1981 | 42.89 | 47.79 | 50.13 | 62.25 | 68.81 | 78.83 | 81.35 | 77.08 | 72.18 | 61.18 | ----- | z | ----- | z | 64.25 | b | ||||||||||
1982 | ----- | z | ----- | z | 54.11 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 54.11 | k | |
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 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1999 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2000 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 79.11 | 75.42 | 59.53 | 43.90 | a | 42.24 | 60.04 | g | ||||
2001 | 39.56 | 45.73 | 52.15 | 59.78 | 71.35 | 79.07 | 81.68 | 78.23 | 73.93 | 64.34 | 51.80 | 40.03 | 61.47 | |||||||||||||
2002 | 41.87 | 45.09 | 51.82 | 65.40 | 69.15 | 81.60 | 80.55 | 79.81 | 73.88 | 60.23 | 49.40 | 41.50 | 61.69 | |||||||||||||
2003 | 46.73 | 46.84 | 51.77 | 59.12 | 69.84 | 77.62 | 83.34 | 81.29 | 75.67 | 66.26 | 51.71 | f | 41.32 | 63.62 | a | |||||||||||
2004 | 44.10 | 42.07 | 56.44 | 60.05 | a | 70.03 | 76.52 | 80.05 | 76.29 | 70.55 | 61.53 | 47.17 | 41.11 | 60.49 | ||||||||||||
2005 | 45.03 | 46.82 | 50.55 | 59.03 | 69.84 | 78.31 | a | 82.81 | 78.74 | 76.00 | 62.34 | 51.72 | 44.69 | 62.16 | ||||||||||||
2006 | 44.16 | 48.86 | 53.45 | 63.30 | 72.69 | 80.90 | 81.60 | 76.23 | 67.80 | 59.76 | 51.67 | 40.58 | 61.75 | |||||||||||||
2007 | 39.52 | 46.89 | 54.10 | 59.47 | 69.37 | 78.35 | 80.87 | 80.56 | 73.53 | 63.66 | 53.45 | 41.02 | 61.73 | |||||||||||||
2008 | 41.19 | 47.22 | b | 52.00 | 58.97 | 67.90 | 79.33 | 77.40 | 76.13 | 69.30 | 60.97 | 49.58 | 43.02 | 60.25 | ||||||||||||
2009 | 43.45 | 47.48 | 53.61 | 58.75 | 71.30 | a | 75.77 | 83.13 | 80.26 | 71.70 | 60.79 | 51.50 | 40.73 | 61.54 | ||||||||||||
2010 | 39.87 | a | 43.88 | 49.71 | 58.45 | 65.77 | 78.96 | b | 80.06 | 78.89 | 75.05 | 63.56 | 47.73 | b | 45.42 | 60.61 | ||||||||||
2011 | 39.95 | 41.38 | 56.15 | 63.17 | 66.15 | 79.55 | 82.90 | 82.32 | 74.83 | 61.65 | 48.82 | 37.72 | a | 61.21 | ||||||||||||
2012 | 44.52 | 45.95 | a | 52.47 | 62.67 | 69.35 | 80.28 | 79.88 | b | 81.08 | 72.10 | 63.48 | 53.47 | a | 43.03 | 62.36 | ||||||||||
2013 | 37.66 | 42.16 | 54.74 | 61.63 | 68.58 | 82.02 | 79.71 | b | 78.35 | 72.37 | 59.79 | 49.50 | 41.08 | 60.63 | ||||||||||||
2014 | 43.71 | 50.77 | 53.98 | a | 60.32 | 67.89 | 80.68 | 81.98 | 77.03 | 72.93 | 63.82 | 49.15 | 44.66 | 62.24 | ||||||||||||
2015 | 41.56 | 50.50 | 55.84 | 58.95 | 65.66 | 79.83 | 80.06 | 81.76 | 75.57 | a | 64.28 | b | 50.20 | 41.87 | 62.17 | |||||||||||
2016 | 40.79 | 48.76 | 55.50 | 60.08 | 67.60 | 80.95 | b | 84.42 | 77.26 | 72.60 | a | 66.73 | 52.73 | 45.29 | 62.73 | |||||||||||
2017 | 43.87 | 50.55 | 58.39 | 61.63 | 68.44 | 80.23 | 81.00 | 77.27 | 73.45 | b | 64.55 | 57.00 | 44.89 | 63.44 | ||||||||||||
2018 | 43.40 | 49.30 | 54.63 | 64.38 | 71.94 | 80.73 | 81.47 | 80.47 | 74.38 | 60.47 | 48.28 | 43.65 | 62.76 | |||||||||||||
2019 | 42.58 | 45.25 | 53.84 | 61.30 | 65.74 | 77.24 | a | 83.15 | 82.71 | 74.55 | 60.48 | 50.70 | 43.06 | 61.72 | ||||||||||||
2020 | 43.57 | c | 45.79 | 53.60 | 61.03 | 71.97 | 79.03 | 84.32 | a | 84.44 | d | 71.44 | d | 64.43 | a | 53.75 | 40.31 | 62.81 | ||||||||
2021 | 41.21 | 45.96 | 51.13 | 62.50 | 70.52 | 80.55 | 80.08 | 79.19 | 74.57 | 62.61 | 53.78 | 47.06 | 62.43 | |||||||||||||
2022 | 42.27 | 42.93 | 51.35 | 63.72 | 71.53 | 80.42 | 83.44 | 78.15 | 74.47 | 59.79 | 47.28 | 44.47 | 61.65 | |||||||||||||
2023 | 42.35 | 44.62 | 52.24 | 61.12 | 69.92 | 77.60 | 87.23 | 82.87 | 77.62 | 65.63 | 53.08 | 44.40 | 63.22 | |||||||||||||
2024 | 43.66 | 49.21 | 53.48 | 59.36 | h | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 48.78 | i | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 41.80 | 45.92 | 52.39 | 59.98 | 68.30 | 78.11 | 81.06 | 78.67 | 72.48 | 61.82 | 50.05 | 42.39 | 61.05 | |||||||||||||
S.D. | 2.45 | 2.94 | 2.92 | 2.46 | 2.21 | 2.19 | 2.09 | 2.29 | 2.23 | 2.34 | 2.76 | 2.22 | 1.17 | |||||||||||||
SKEW | -0.38 | -0.58 | -0.01 | -0.28 | -0.08 | -0.10 | 0.26 | 0.45 | 0.06 | -0.26 | -0.05 | -0.04 | 0.19 | |||||||||||||
MAX | 46.73 | 50.77 | 59.00 | 65.40 | 72.69 | 82.02 | 87.23 | 84.44 | 77.62 | 66.73 | 57.00 | 47.06 | 63.44 | |||||||||||||
MIN | 35.87 | 37.50 | 46.08 | 54.08 | 62.82 | 73.42 | 77.05 | 74.29 | 67.80 | 56.18 | 43.90 | 37.72 | 58.85 | |||||||||||||
YRS | 44 | 44 | 45 | 43 | 44 | 44 | 44 | 45 | 45 | 45 | 43 | 44 | 41 |