YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
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 | 68.82 | s | 55.84 | 43.72 | 37.78 | b | 45.78 | i | ||
1987 | 34.21 | 41.60 | c | 43.92 | 54.35 | 65.08 | 73.00 | a | 76.47 | 74.55 | 67.33 | 58.73 | 46.12 | a | 35.26 | 55.88 | ||||||||||
1988 | 32.61 | 39.89 | a | 45.11 | 54.28 | 63.97 | a | 73.02 | a | 75.19 | 75.81 | 67.77 | 58.80 | a | 47.38 | 37.47 | 55.94 | |||||||||
1989 | 40.55 | 35.96 | 50.08 | 59.82 | 68.15 | 69.74 | a | 75.73 | 74.17 | a | 65.45 | 59.24 | 46.33 | 31.53 | a | 56.40 | ||||||||||
1990 | 38.34 | 41.69 | a | 46.55 | 56.42 | 64.27 | 79.65 | 74.03 | 73.82 | 70.10 | 57.63 | a | 48.07 | a | 34.16 | b | 57.06 | |||||||||
1991 | 33.42 | a | 44.07 | a | 48.87 | a | 58.17 | a | 68.00 | 73.93 | 74.18 | 74.32 | a | 64.33 | 59.34 | 40.53 | a | 39.05 | a | 56.52 | ||||||
1992 | 36.05 | 44.75 | c | 50.39 | 57.90 | a | 62.97 | a | 70.13 | 75.89 | 72.39 | 68.29 | a | 58.87 | a | 41.14 | a | 36.27 | a | 56.25 | ||||||
1993 | 34.10 | 37.59 | 47.34 | b | 55.93 | a | 64.65 | 73.92 | 78.31 | 75.42 | 66.88 | 55.40 | 41.32 | 39.02 | 55.82 | |||||||||||
1994 | 36.95 | a | 37.86 | 49.03 | 55.42 | 64.27 | 77.77 | 76.92 | 74.15 | a | 69.10 | 58.37 | 47.25 | 41.74 | 57.40 | |||||||||||
1995 | 38.02 | 44.20 | 46.82 | 54.20 | 62.58 | 72.07 | a | 76.61 | 75.50 | a | 67.18 | 57.73 | 48.28 | c | 39.47 | a | 56.89 | |||||||||
1996 | 36.42 | 42.84 | a | 44.05 | 55.80 | 70.77 | 72.30 | 76.21 | 73.76 | 66.03 | 57.39 | 46.17 | 39.73 | 56.79 | ||||||||||||
1997 | 33.89 | 37.88 | 49.58 | 49.82 | 63.03 | 71.48 | 77.10 | 74.47 | b | 70.41 | a | 57.48 | a | 43.57 | 35.11 | 55.32 | ||||||||||
1998 | 40.12 | a | 41.38 | 44.08 | 54.27 | 70.27 | a | 75.85 | 79.52 | a | 74.63 | 73.40 | 61.34 | 48.88 | a | 38.47 | 58.52 | |||||||||
1999 | 40.28 | b | 45.64 | 46.10 | 55.70 | 62.83 | a | 72.93 | 77.06 | 77.70 | a | 66.52 | a | 57.68 | 51.13 | 37.36 | b | 57.58 | ||||||||
2000 | 40.13 | 46.05 | 49.42 | a | 57.02 | 70.64 | b | 71.80 | 77.98 | 77.00 | a | 71.05 | b | 58.62 | a | 40.57 | b | 32.80 | a | 57.76 | ||||||
2001 | 33.52 | a | 41.50 | a | 44.42 | a | 59.71 | b | 66.63 | a | 75.86 | a | 80.23 | 75.97 | a | 68.80 | 57.83 | a | 49.70 | b | 39.18 | 57.78 | ||||
2002 | 37.67 | a | 38.09 | a | 44.22 | b | 59.43 | b | 66.08 | 76.17 | 76.18 | 77.00 | 68.58 | 54.94 | 43.95 | 37.02 | a | 56.61 | ||||||||
2003 | 38.95 | a | 37.93 | 49.58 | a | 58.47 | 66.66 | 71.48 | 78.16 | 77.47 | 66.18 | 60.73 | 47.23 | 39.24 | 57.67 | |||||||||||
2004 | 38.76 | 37.34 | 51.87 | a | 55.80 | 68.60 | 73.19 | a | 74.52 | 72.48 | 67.53 | 58.40 | a | 43.35 | 38.15 | 56.67 | ||||||||||
2005 | 40.40 | 42.25 | 45.18 | 55.30 | 64.27 | 74.93 | 75.50 | 74.05 | 72.08 | 58.77 | 47.80 | 37.40 | 57.33 | |||||||||||||
2006 | 42.29 | 39.93 | a | 48.55 | 60.72 | a | 70.42 | 76.62 | 79.05 | 76.45 | 65.16 | a | 58.27 | 49.03 | 36.98 | 58.62 | ||||||||||
2007 | 31.18 | 38.98 | 52.29 | 51.77 | 64.22 | a | 71.80 | 74.98 | 77.27 | 71.67 | 61.65 | 47.88 | a | 37.82 | 56.79 | |||||||||||
2008 | 36.33 | a | 41.84 | 48.08 | 55.12 | 65.82 | 76.88 | 74.32 | 73.42 | 65.18 | 56.98 | 46.85 | 38.00 | 56.57 | ||||||||||||
2009 | 36.68 | 44.05 | 49.29 | 54.80 | 63.89 | 73.97 | 75.68 | 75.47 | a | 65.47 | 54.32 | 48.18 | 31.71 | 56.13 | ||||||||||||
2010 | 35.16 | 34.00 | 46.08 | 56.88 | 64.71 | 77.85 | 75.48 | 76.97 | 72.73 | 60.32 | 46.43 | 41.47 | 57.34 | |||||||||||||
2011 | 35.40 | 35.91 | 51.66 | 60.53 | 65.29 | 80.30 | 81.94 | 81.82 | 69.47 | 58.68 | 46.70 | 34.71 | 58.53 | |||||||||||||
2012 | 40.81 | 39.91 | 54.23 | 62.85 | 68.98 | 77.17 | 78.55 | 77.42 | 69.40 | 56.77 | 51.57 | 40.52 | 59.85 | |||||||||||||
2013 | 37.74 | 39.00 | 49.44 | 52.47 | 64.89 | 75.55 | 73.55 | 74.55 | 70.40 | 56.35 | 42.57 | 34.45 | 55.91 | |||||||||||||
2014 | 34.37 | 36.98 | 44.32 | 54.87 | 63.37 | 72.97 | 73.50 | 74.10 | 68.10 | 59.53 | 41.38 | 38.71 | 55.18 | |||||||||||||
2015 | 33.81 | 39.59 | 45.79 | 55.85 | 61.02 | 73.23 | 75.27 | 74.18 | 71.93 | 59.39 | 45.92 | 39.79 | 56.31 | |||||||||||||
2016 | 36.58 | 42.50 | 51.23 | 55.50 | 62.44 | 74.05 | 78.68 | 73.34 | 68.45 | 61.47 | 50.27 | 36.63 | 57.59 | |||||||||||||
2017 | 37.56 | 45.52 | 52.11 | 56.58 | 62.55 | 74.83 | 76.02 | 71.50 | 67.13 | 57.69 | 50.08 | 37.63 | 57.43 | |||||||||||||
2018 | 34.03 | 40.34 | 49.63 | 53.03 | 70.95 | 76.52 | 77.19 | 74.81 | 68.23 | 55.68 | 41.17 | 36.74 | 56.53 | |||||||||||||
2019 | 36.85 | 39.71 | 44.11 | 55.25 | 61.82 | 71.80 | 76.35 | 78.74 | 73.37 | 52.05 | 41.58 | 40.52 | 56.01 | |||||||||||||
2020 | 38.82 | 36.02 | 49.87 | 53.88 | 67.15 | 75.10 | 79.66 | 77.55 | 65.53 | 55.11 | 49.97 | 37.16 | 57.15 | |||||||||||||
2021 | 35.39 | 31.77 | 47.02 | 52.62 | 63.39 | 73.88 | 73.90 | 74.44 | 70.80 | 59.71 | 47.70 | 45.34 | 56.33 | |||||||||||||
2022 | 33.60 | 33.18 | 45.58 | 56.27 | 67.27 | 75.97 | 80.65 | 74.89 | 70.22 | 56.89 | 42.37 | 37.03 | 56.16 | |||||||||||||
2023 | 38.84 | 39.66 | 46.81 | 52.62 | 64.60 | 72.50 | 77.90 | 79.21 | 72.03 | 58.87 | 47.23 | 41.21 | 57.62 | |||||||||||||
2024 | 33.29 | 43.55 | 47.97 | 54.48 | h | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 41.60 | i | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 36.66 | 40.03 | 47.91 | 55.93 | 65.58 | 74.33 | 76.71 | 75.43 | 68.71 | 57.97 | 46.04 | 37.70 | 56.93 | |||||||||||||
S.D. | 2.73 | 3.52 | 2.78 | 2.73 | 2.78 | 2.49 | 2.10 | 2.09 | 2.52 | 2.05 | 3.24 | 2.79 | 0.98 | |||||||||||||
SKEW | 0.09 | -0.26 | 0.21 | 0.36 | 0.55 | 0.41 | 0.50 | 0.78 | 0.18 | -0.54 | -0.28 | -0.03 | 0.71 | |||||||||||||
MAX | 42.29 | 46.05 | 54.23 | 62.85 | 70.95 | 80.30 | 81.94 | 81.82 | 73.40 | 61.65 | 51.57 | 45.34 | 59.85 | |||||||||||||
MIN | 31.18 | 31.77 | 43.92 | 49.82 | 61.02 | 69.74 | 73.50 | 71.50 | 64.33 | 52.05 | 40.53 | 31.53 | 55.18 | |||||||||||||
YRS | 38 | 38 | 38 | 37 | 37 | 37 | 37 | 37 | 37 | 38 | 38 | 38 | 37 |