YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
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 | ----- | 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 | ----- | 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 | 62.65 | 36.07 | 16.55 | 38.42 | i | |||
1990 | 32.16 | 30.41 | a | 41.84 | 57.83 | 66.84 | 78.33 | 80.45 | 80.55 | 74.93 | 57.68 | 44.70 | 22.97 | 55.72 | ||||||||||||
1991 | 19.23 | 34.25 | 38.61 | 58.17 | 69.97 | 78.10 | 79.68 | 81.77 | 69.20 | 55.77 | 31.10 | 28.32 | 53.68 | |||||||||||||
1992 | 29.16 | 31.66 | 42.77 | 49.67 | 73.16 | 73.77 | 72.65 | 75.16 | 70.07 | 58.45 | 31.03 | 19.42 | 52.25 | |||||||||||||
1993 | 17.13 | 18.29 | 32.52 | 52.13 | 67.16 | 70.57 | 74.77 | 77.55 | 64.80 | 56.55 | 33.77 | 23.10 | 49.03 | |||||||||||||
1994 | 6.19 | 14.04 | 37.45 | 55.57 | 71.58 | 78.20 | 77.42 | 76.39 | 73.20 | 59.32 | 43.07 | 28.29 | 51.73 | |||||||||||||
1995 | 19.71 | 23.86 | 34.74 | 46.37 | 64.32 | 80.80 | 80.13 | 81.03 | 71.23 | 53.00 | 31.27 | 23.07 | b | 50.79 | ||||||||||||
1996 | 10.27 | a | 21.55 | 26.94 | 48.17 | a | 62.97 | 80.03 | 80.39 | 82.35 | 71.57 | 58.00 | 25.67 | 13.90 | 48.48 | |||||||||||
1997 | 12.16 | 25.04 | a | 31.58 | 48.27 | 63.97 | 80.33 | 80.39 | 78.65 | 75.60 | 60.94 | 32.63 | 32.39 | 51.83 | ||||||||||||
1998 | 19.35 | 33.71 | 32.70 | a | 59.50 | 73.35 | 73.07 | 82.65 | 83.10 | 79.23 | 58.45 | 38.57 | 31.68 | 55.45 | ||||||||||||
1999 | 15.97 | 32.43 | 41.42 | 55.00 | 69.90 | 76.23 | 83.74 | 79.90 | 68.20 | 57.32 | 51.67 | 35.43 | a | 55.60 | ||||||||||||
2000 | 21.74 | 31.03 | 47.65 | 54.20 | 70.42 | 75.47 | 82.10 | 82.26 | 72.73 | 60.61 | 34.20 | 11.97 | a | 53.70 | ||||||||||||
2001 | 26.23 | 16.57 | 32.26 | 51.60 | 70.07 | a | 77.17 | 83.65 | 84.45 | 71.00 | 58.26 | 52.17 | 28.52 | 54.33 | ||||||||||||
2002 | 27.55 | 36.46 | 29.65 | 51.00 | 65.10 | 81.50 | 84.55 | 79.06 | 75.67 | 47.19 | 39.43 | 31.19 | 54.03 | |||||||||||||
2003 | 21.00 | 22.07 | 39.16 | 58.80 | 67.13 | 76.40 | 83.65 | 85.39 | 72.37 | 63.00 | 33.90 | 29.52 | 54.36 | |||||||||||||
2004 | 16.26 | 24.76 | 42.90 | 61.03 | 65.13 | 73.47 | 79.90 | 74.77 | 73.53 | 57.65 | 44.73 | 28.32 | 53.54 | |||||||||||||
2005 | 16.97 | 30.43 | 39.42 | 62.20 | 64.87 | 78.87 | 82.90 | 79.77 | 74.70 | 60.42 | 43.43 | b | 27.91 | h | 57.63 | a | ||||||||||
2006 | 31.52 | 22.46 | 35.06 | 60.17 | 68.35 | 79.03 | 87.55 | 81.35 | 67.63 | 55.03 | 42.97 | 34.94 | 55.51 | |||||||||||||
2007 | 23.16 | 16.96 | 40.39 | 50.60 | 71.13 | 78.80 | 84.29 | 76.87 | 72.37 | 60.19 | 41.07 | 19.87 | 52.98 | |||||||||||||
2008 | 16.35 | 17.89 | a | 33.67 | a | 50.07 | 66.32 | 74.30 | 83.13 | 81.29 | 72.13 | 57.32 | 40.86 | a | 16.71 | 50.84 | ||||||||||
2009 | 13.39 | 22.04 | 30.71 | 49.77 | 67.71 | 74.57 | 77.52 | 77.13 | 74.63 | 46.39 | 47.37 | 17.94 | 49.93 | |||||||||||||
2010 | 15.19 | 18.39 | 39.94 | 62.47 | 66.10 | a | 76.72 | a | 83.00 | 82.55 | 66.43 | 61.65 | 39.43 | 18.03 | 52.49 | |||||||||||
2011 | 12.61 | 20.57 | 27.97 | 50.10 | 63.61 | 74.40 | 84.77 | 80.45 | 71.67 | 62.61 | 44.00 | 33.16 | 52.16 | |||||||||||||
2012 | 29.48 | 31.97 | 51.19 | 58.67 | 71.71 | 80.37 | 86.48 | 79.39 | 74.47 | 54.29 | 40.40 | 22.29 | 56.73 | |||||||||||||
2013 | 22.29 | 18.82 | 26.35 | 39.43 | 65.68 | 75.93 | 81.39 | 81.81 | 75.37 | 53.68 | 38.10 | 15.77 | 49.55 | |||||||||||||
2014 | 17.26 | 16.64 | 33.81 | 49.90 | 67.39 | 75.87 | 78.19 | 77.77 | 71.53 | 59.74 | 30.37 | 26.58 | 50.42 | |||||||||||||
2015 | 25.19 | 17.14 | 42.13 | 60.70 | 66.33 | a | 77.53 | 81.74 | 79.58 | 77.10 | 61.23 | 47.30 | 29.23 | 55.43 | ||||||||||||
2016 | 23.00 | 31.41 | 48.16 | 55.70 | 71.87 | 80.30 | 80.90 | 80.35 | 72.53 | 58.23 | 50.47 | 22.71 | 56.30 | |||||||||||||
2017 | 21.10 | 35.36 | 38.68 | 57.00 | 68.48 | 79.47 | 83.23 | 75.87 | 72.73 | 59.16 | 37.60 | 25.77 | 54.54 | |||||||||||||
2018 | 20.16 | 18.86 | 35.13 | 43.63 | 76.90 | 80.37 | 80.13 | 77.61 | 71.53 | 49.52 | 30.40 | 29.16 | 51.12 | |||||||||||||
2019 | 15.10 | 8.43 | 28.55 | 51.50 | 61.68 | 77.03 | 80.84 | 76.06 | 70.67 | 49.32 | 35.33 | 24.03 | 48.21 | |||||||||||||
2020 | 19.87 | 25.03 | 40.19 | 50.50 | 64.42 | 81.27 | 82.71 | 81.00 | 69.60 | 49.74 | 46.13 | 32.23 | 53.56 | |||||||||||||
2021 | 27.65 | 15.29 | 47.97 | 52.80 | 68.87 | 84.97 | 83.58 | 81.58 | 75.67 | 61.58 | 42.13 | 26.65 | 55.73 | |||||||||||||
2022 | 15.81 | 20.00 | 34.77 | 43.53 | 65.65 | 80.23 | 82.65 | 79.16 | 76.00 | 60.38 | b | ----- | z | 17.27 | a | 52.31 | a | |||||||||
2023 | 19.87 | 23.89 | 26.26 | 42.43 | 74.71 | 83.43 | 79.94 | 79.94 | 74.93 | 57.48 | 44.20 | 36.77 | 53.66 | |||||||||||||
2024 | 20.97 | 37.69 | 41.97 | 55.00 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 38.91 | h | ||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 20.03 | 24.15 | 36.99 | 52.96 | 68.03 | 77.85 | 81.50 | 79.76 | 72.50 | 57.22 | 39.57 | 25.11 | 52.93 | |||||||||||||
S.D. | 6.05 | 7.43 | 6.58 | 5.89 | 3.60 | 3.14 | 3.04 | 2.60 | 3.10 | 4.42 | 6.71 | 6.67 | 2.40 | |||||||||||||
SKEW | 0.12 | 0.15 | 0.19 | -0.28 | 0.49 | -0.06 | -0.76 | -0.06 | -0.35 | -0.99 | -0.02 | -0.16 | -0.34 | |||||||||||||
MAX | 32.16 | 37.69 | 51.19 | 62.47 | 76.90 | 84.97 | 87.55 | 85.39 | 79.23 | 63.00 | 52.17 | 36.77 | 56.73 | |||||||||||||
MIN | 6.19 | 8.43 | 26.26 | 39.43 | 61.68 | 70.57 | 72.65 | 74.77 | 64.80 | 46.39 | 25.67 | 11.97 | 48.21 | |||||||||||||
YRS | 35 | 35 | 35 | 35 | 34 | 34 | 34 | 34 | 34 | 35 | 34 | 34 | 32 |