YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
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 | 32.52 | 40.34 | ----- | z | 53.40 | 68.20 | 70.52 | 68.40 | 62.03 | 49.11 | 35.85 | 34.71 | 51.51 | b | ||||||||||
1947 | 31.11 | 31.64 | 37.23 | 29.77 | 55.37 | 63.33 | 69.95 | 68.37 | 63.67 | 52.63 | 31.93 | 24.69 | 46.64 | |||||||||||||
1948 | 23.39 | 25.98 | 29.23 | 51.05 | 55.27 | 63.30 | 68.85 | 68.87 | 63.62 | 48.90 | 32.57 | 31.82 | 46.90 | |||||||||||||
1949 | 23.03 | 31.07 | 39.45 | 47.00 | 56.34 | 62.45 | 68.85 | 67.69 | 61.70 | 48.40 | 44.42 | 28.61 | 48.25 | |||||||||||||
1950 | 32.42 | 36.68 | 38.34 | 48.73 | 55.16 | 65.68 | 66.97 | 65.24 | 60.18 | 57.34 | 39.57 | 34.68 | 50.08 | |||||||||||||
1951 | 25.60 | 34.54 | 35.52 | 44.07 | 55.63 | 62.45 | 71.05 | 68.34 | 60.60 | 49.53 | 33.30 | 30.55 | 47.60 | |||||||||||||
1952 | 33.34 | 32.21 | 35.10 | 46.30 | 54.90 | 70.10 | 68.76 | 69.45 | 60.32 | 50.61 | 31.52 | 28.89 | 48.46 | |||||||||||||
1953 | 36.31 | 29.93 | 41.10 | 44.78 | 53.05 | 69.57 | 71.08 | 67.42 | ----- | z | ----- | z | ----- | z | ----- | z | 51.65 | d | ||||||||
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 | 38.52 | 33.81 | 36.16 | j | ||
1956 | 33.58 | 30.05 | 39.74 | 45.42 | 60.63 | 68.98 | 68.77 | 66.66 | 64.00 | 52.31 | 34.33 | 31.24 | 49.64 | |||||||||||||
1957 | 29.92 | 40.20 | 38.53 | 42.80 | 52.27 | 64.13 | 70.53 | 67.60 | 60.27 | 50.63 | 31.07 | 34.85 | 48.57 | |||||||||||||
1958 | 29.82 | 37.21 | 34.18 | 43.58 | 57.94 | 66.77 | 69.10 | 68.87 | 62.79 | a | 50.27 | 39.07 | 34.39 | 49.50 | ||||||||||||
1959 | 28.29 | 32.95 | 36.16 | 45.92 | 56.16 | 65.65 | 67.47 | 68.02 | 59.55 | 47.40 | 35.30 | 32.31 | 47.93 | |||||||||||||
1960 | 24.08 | 24.50 | 38.82 | 48.50 | 55.52 | 66.15 | 67.92 | 68.95 | 62.62 | 49.95 | 39.80 | 26.84 | 47.80 | |||||||||||||
1961 | 26.65 | 32.11 | 39.24 | 45.07 | 57.13 | 65.63 | 67.85 | 67.37 | 58.07 | a | 49.39 | 35.80 | 26.68 | 47.58 | ||||||||||||
1962 | 25.61 | 36.64 | 34.11 | 49.32 | 58.34 | 63.18 | 68.13 | 69.05 | 61.68 | 53.44 | 40.38 | 33.13 | a | 49.42 | ||||||||||||
1963 | 21.95 | 34.27 | 39.34 | 50.58 | 59.23 | 65.95 | 72.74 | 68.90 | 64.50 | 55.76 | 41.20 | 28.61 | 50.25 | |||||||||||||
1964 | 27.05 | 24.72 | 34.65 | 45.52 | 58.05 | 66.00 | 72.29 | 68.55 | 61.35 | 51.16 | 38.63 | 29.47 | 48.12 | |||||||||||||
1965 | 32.66 | 28.62 | 31.55 | a | 48.27 | 54.39 | 61.55 | 68.65 | 66.13 | 58.80 | 51.27 | 43.55 | 33.63 | 48.26 | ||||||||||||
1966 | 24.98 | 30.64 | 41.10 | 47.13 | 58.69 | 65.47 | 72.63 | 66.55 | 62.17 | a | 49.71 | 42.52 | 29.68 | 49.27 | ||||||||||||
1967 | 30.00 | 32.59 | 43.87 | 50.42 | 55.03 | 64.55 | 69.23 | 64.35 | 59.28 | 51.00 | 40.20 | 23.76 | 48.69 | |||||||||||||
1968 | 29.10 | 34.17 | 37.79 | 44.12 | 54.55 | 66.62 | 67.10 | 65.02 | 59.38 | 51.77 | 35.70 | ----- | z | 49.57 | a | |||||||||||
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 | ----- | 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 | 67.50 | v | 63.97 | a | 49.60 | 41.40 | 31.14 | b | 46.53 | h | ||
1999 | 34.57 | b | 37.43 | 40.69 | 43.72 | 54.11 | 62.60 | 68.37 | d | 66.75 | c | 61.21 | k | 49.90 | a | 42.50 | a | 28.82 | a | 48.13 | a | |||||
2000 | 32.90 | a | 37.84 | 40.35 | 49.12 | 59.79 | 65.68 | 69.68 | 69.82 | 63.18 | 48.71 | 31.90 | 29.06 | 49.84 | ||||||||||||
2001 | 23.90 | 30.73 | 39.66 | 49.67 | 55.80 | d | 65.98 | 71.98 | 67.61 | 62.47 | 51.27 | 40.42 | 28.82 | 49.03 | ||||||||||||
2002 | 29.60 | 29.98 | 36.11 | 51.91 | b | 57.98 | 68.97 | 69.42 | 68.48 | 60.42 | 46.77 | 36.93 | 27.84 | 48.70 | ||||||||||||
2003 | 35.26 | 31.52 | a | 39.48 | b | 48.93 | 58.74 | 62.22 | 73.33 | b | 69.68 | 60.40 | 53.76 | 38.87 | 31.42 | 50.30 | ||||||||||
2004 | 31.65 | 29.24 | 44.13 | 46.13 | 58.73 | 64.55 | 67.05 | 63.74 | 59.67 | 49.35 | 36.38 | 31.21 | 48.49 | |||||||||||||
2005 | 34.92 | a | 33.16 | 35.47 | 46.36 | a | 55.61 | 64.52 | 70.29 | 67.34 | b | 63.12 | 51.02 | 40.52 | 30.52 | 49.40 | ||||||||||
2006 | 33.13 | 32.70 | 40.02 | 52.02 | 59.98 | 69.15 | 70.82 | 67.00 | b | 56.65 | 49.25 | a | 41.93 | a | 29.57 | c | 50.18 | |||||||||
2007 | 24.52 | a | 35.30 | 43.55 | 46.48 | 57.03 | 65.33 | 70.27 | 72.23 | 64.25 | 53.26 | 41.30 | 29.24 | b | 50.23 | |||||||||||
2008 | 27.60 | a | 35.10 | 40.08 | 47.28 | 56.71 | 68.38 | 71.37 | 68.82 | 62.43 | 52.60 | 40.87 | 32.48 | 50.31 | ||||||||||||
2009 | 35.21 | 37.91 | 42.87 | 49.58 | 60.53 | 67.48 | 73.47 | 70.45 | 61.67 | 47.61 | 43.23 | 27.31 | 51.44 | |||||||||||||
2010 | 32.53 | 27.68 | 40.82 | 50.38 | 57.82 | 71.53 | 72.90 | 71.90 | 67.67 | 54.63 | 38.97 | 37.05 | 51.99 | |||||||||||||
2011 | 31.81 | 31.98 | 46.92 | 52.95 | 57.97 | 72.23 | 77.44 | 76.06 | 64.18 | 53.50 | 42.00 | 30.84 | 53.16 | |||||||||||||
2012 | 37.34 | 35.18 | a | 47.47 | 55.74 | a | 62.85 | 73.35 | 76.35 | 73.11 | 62.42 | 50.55 | 42.32 | 30.23 | 53.91 | |||||||||||
2013 | 27.60 | 32.39 | 41.21 | 46.22 | a | 57.21 | 70.87 | 71.82 | 69.74 | 64.08 | 49.12 | a | 38.83 | a | 30.68 | 49.98 | ||||||||||
2014 | 31.47 | a | 36.25 | 41.87 | 47.98 | 56.82 | 67.81 | v | 70.85 | k | 67.35 | 64.42 | 53.68 | 35.62 | 30.61 | 46.61 | b | |||||||||
2015 | 31.97 | 33.61 | 43.39 | 49.13 | 55.05 | 66.80 | 69.52 | 70.27 | 66.98 | 54.66 | 38.03 | 34.41 | b | 51.15 | ||||||||||||
2016 | 33.52 | k | 37.05 | 41.42 | 47.22 | 53.89 | 67.50 | 71.43 | c | 67.16 | 63.20 | 56.00 | 41.95 | 30.30 | a | 52.46 | a | |||||||||
2017 | 31.48 | 39.98 | 46.66 | 49.05 | 55.33 | a | 67.55 | 71.82 | 66.52 | 61.77 | 50.42 | 45.02 | 33.95 | 51.63 | ||||||||||||
2018 | 33.52 | 35.04 | 42.31 | 48.33 | 62.32 | 70.05 | 71.61 | 68.97 | 63.45 | 49.92 | 36.38 | 30.73 | 51.05 | |||||||||||||
2019 | 32.08 | 34.05 | 39.74 | 49.70 | 53.58 | 64.98 | 71.47 | 71.71 | 67.40 | 44.68 | 36.77 | b | 30.10 | b | 49.69 | |||||||||||
2020 | 31.94 | 32.28 | 44.03 | 48.35 | 61.45 | 68.63 | 72.48 | 72.03 | 60.53 | 51.26 | 42.27 | 30.27 | 51.29 | |||||||||||||
2021 | 29.45 | 31.11 | 39.48 | b | 46.52 | 57.19 | 67.87 | 71.08 | 70.16 | 66.32 | 51.56 | 44.03 | a | 37.34 | 51.01 | |||||||||||
2022 | 31.27 | 28.50 | 38.42 | 49.50 | 59.94 | 68.22 | 72.56 | 67.89 | 65.62 | 50.21 | 35.98 | 31.50 | 49.97 | |||||||||||||
2023 | 30.39 | 32.54 | 38.66 | 46.73 | 58.92 | 63.72 | 72.31 | b | 71.66 | 64.17 | 52.03 | 41.58 | 33.63 | 50.53 | ||||||||||||
2024 | 29.05 | 36.45 | 41.32 | 46.81 | n | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 35.61 | i | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 30.09 | 32.94 | 39.61 | 47.50 | 57.01 | 66.53 | 70.61 | 68.61 | 62.38 | 51.00 | 38.75 | 30.90 | 49.66 | |||||||||||||
S.D. | 3.85 | 3.62 | 3.74 | 3.80 | 2.51 | 2.83 | 2.29 | 2.34 | 2.44 | 2.50 | 3.73 | 2.89 | 1.59 | |||||||||||||
SKEW | -0.36 | -0.25 | -0.31 | -2.03 | 0.34 | 0.33 | 0.65 | 0.63 | 0.08 | 0.27 | -0.42 | -0.02 | 0.43 | |||||||||||||
MAX | 37.34 | 40.20 | 47.47 | 55.74 | 62.85 | 73.35 | 77.44 | 76.06 | 67.67 | 57.34 | 45.02 | 37.34 | 53.91 | |||||||||||||
MIN | 21.95 | 24.50 | 29.23 | 29.77 | 52.27 | 61.55 | 66.97 | 63.74 | 56.65 | 44.68 | 31.07 | 23.76 | 46.64 | |||||||||||||
YRS | 45 | 47 | 47 | 45 | 46 | 45 | 45 | 46 | 45 | 46 | 47 | 46 | 40 |