YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
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 | 53.02 | c | 40.77 | d | 41.75 | g | 46.89 | j |
1981 | 36.12 | f | 38.74 | i | 43.35 | e | 56.17 | j | 60.00 | q | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 43.35 | k |
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 | 52.82 | a | 44.19 | a | 26.95 | 41.32 | i | |
1990 | 32.76 | 33.55 | 40.25 | a | 51.22 | 56.30 | a | 73.58 | 70.92 | 69.95 | 67.10 | 52.56 | 45.10 | a | 26.42 | a | 51.64 | |||||||||
1991 | 27.95 | 40.45 | 42.68 | 49.15 | 60.90 | a | 70.53 | a | 71.78 | a | 70.90 | 62.93 | b | 52.98 | a | 36.00 | 34.08 | a | 51.70 | |||||||
1992 | 33.92 | 39.17 | 45.02 | a | 53.26 | a | 59.21 | e | 64.44 | c | 71.17 | d | 69.70 | i | 65.37 | 54.93 | a | 32.43 | c | 30.40 | 49.94 | a | ||||
1993 | 30.17 | a | 31.80 | a | 41.18 | a | 49.30 | 58.45 | 67.80 | 73.81 | 70.84 | 60.44 | c | 49.97 | 37.00 | a | 34.61 | 50.45 | ||||||||
1994 | 33.95 | 34.29 | 45.34 | 47.75 | b | 61.18 | a | 73.85 | 74.87 | 74.79 | 65.78 | a | 53.53 | a | 40.72 | 37.90 | 53.66 | |||||||||
1995 | 33.39 | 40.43 | 41.77 | 44.64 | b | 53.43 | b | 65.15 | 73.07 | a | 76.55 | a | 63.62 | b | 53.53 | b | 44.60 | a | 34.35 | a | 52.05 | |||||
1996 | 31.81 | 37.25 | a | 39.23 | 49.53 | a | 61.72 | a | 68.75 | 71.84 | b | 69.68 | 60.72 | a | 52.39 | 42.10 | 33.31 | 51.53 | ||||||||
1997 | 29.95 | 33.50 | a | 45.48 | 42.07 | 58.11 | c | 67.52 | d | 74.44 | 70.80 | a | 65.60 | 49.97 | 36.10 | 26.18 | a | 49.98 | ||||||||
1998 | 34.37 | 36.16 | 38.05 | 45.93 | a | 61.72 | f | 66.48 | 73.76 | b | 70.10 | a | 69.64 | b | 54.94 | f | 44.12 | b | 31.97 | a | 51.06 | b | ||||
1999 | 34.73 | a | 40.29 | 42.34 | b | 45.88 | 54.83 | a | 66.34 | a | 74.32 | 72.08 | 60.98 | 51.33 | a | 46.13 | 32.42 | 51.81 | ||||||||
2000 | 35.19 | 41.09 | 41.52 | 49.78 | a | 61.02 | c | 68.30 | 75.13 | 75.10 | 68.05 | 54.25 | a | 35.10 | d | 29.67 | h | 54.96 | a | |||||||
2001 | 30.21 | 34.80 | a | 41.42 | a | 54.74 | e | 60.38 | c | 71.68 | 78.63 | 74.90 | 67.27 | 55.23 | 47.59 | b | 35.02 | 54.32 | ||||||||
2002 | 32.10 | a | 34.77 | 39.52 | 54.88 | ----- | z | 76.14 | a | 77.05 | 75.20 | a | 66.67 | a | 49.69 | 39.28 | e | 34.29 | 52.69 | a | ||||||
2003 | 36.97 | a | 32.28 | a | 43.97 | 52.86 | a | 62.09 | c | 66.08 | 80.34 | 75.26 | 63.78 | 58.02 | 41.72 | 36.40 | 54.15 | |||||||||
2004 | 34.69 | 34.02 | 47.82 | 49.60 | 63.45 | 68.67 | 72.60 | 70.10 | 66.93 | 54.87 | 38.05 | b | 35.85 | 53.05 | ||||||||||||
2005 | 35.82 | 37.05 | 40.85 | 47.77 | 60.10 | 69.77 | 75.98 | b | 72.23 | 68.26 | a | 54.61 | 43.80 | b | 33.77 | c | 53.33 | |||||||||
2006 | 38.27 | 34.27 | 42.45 | a | 55.37 | 63.52 | 74.19 | a | 76.43 | a | 72.18 | a | ----- | z | 51.50 | 44.45 | a | 30.48 | 53.01 | a | ||||||
2007 | 23.15 | 30.98 | 47.18 | 47.20 | 59.73 | 67.90 | a | 73.69 | 77.03 | a | 68.12 | a | 55.94 | 44.31 | a | 28.77 | 52.00 | |||||||||
2008 | 29.19 | 34.53 | 41.12 | a | 48.68 | b | 58.81 | 71.00 | 76.44 | 72.37 | 63.47 | 53.24 | 45.13 | 33.19 | 52.26 | |||||||||||
2009 | 35.44 | 40.11 | 43.79 | 48.78 | 60.19 | 68.50 | 74.76 | 71.55 | 63.10 | 45.84 | 44.68 | 26.35 | 51.92 | |||||||||||||
2010 | 33.29 | 30.70 | 40.23 | 51.78 | 58.00 | 72.80 | 75.10 | 74.08 | 70.20 | 56.47 | 41.87 | 37.27 | 53.48 | |||||||||||||
2011 | 31.18 | 30.32 | 45.29 | 52.38 | 58.24 | 72.70 | 79.27 | 78.08 | 65.93 | 54.21 | 42.57 | 27.13 | 53.11 | |||||||||||||
2012 | 37.58 | 34.98 | 48.68 | 55.10 | 62.16 | 76.47 | 79.48 | 75.92 | 66.55 | 52.15 | 47.83 | 35.32 | 56.02 | |||||||||||||
2013 | 32.11 | 33.95 | 41.00 | 45.98 | 61.13 | 75.86 | a | 75.90 | 73.71 | e | 68.83 | 52.97 | 41.07 | 32.45 | 52.91 | |||||||||||
2014 | 32.97 | 33.14 | 43.50 | 51.02 | 60.48 | 71.23 | 75.61 | 72.47 | 66.40 | 56.34 | 40.13 | 32.24 | 52.96 | |||||||||||||
2015 | 33.76 | 35.82 | 44.34 | 51.88 | 56.10 | 70.87 | 74.69 | 75.27 | 71.13 | 58.03 | 41.52 | 33.85 | 53.94 | |||||||||||||
2016 | 34.56 | 38.34 | 44.94 | 50.08 | 56.74 | 72.40 | 78.13 | 71.56 | 67.62 | 59.42 | 47.40 | 32.11 | 54.44 | |||||||||||||
2017 | 30.85 | 44.29 | 48.63 | 50.08 | 56.32 | 71.13 | 75.08 | 69.06 | 65.48 | 53.31 | 47.68 | 35.05 | 53.91 | |||||||||||||
2018 | 35.24 | 35.43 | 45.15 | 48.87 | 66.23 | 76.27 | 76.52 | 72.37 | 68.80 | 50.66 | 38.83 | a | 33.89 | 54.02 | ||||||||||||
2019 | 32.05 | 33.62 | 39.29 | 51.07 | 54.45 | 68.23 | 76.61 | 77.26 | 72.28 | 46.35 | 40.12 | 35.58 | 52.24 | |||||||||||||
2020 | 35.19 | 30.48 | 46.61 | 48.82 | 63.18 | 74.28 | 76.73 | 77.29 | 63.65 | 51.73 | a | 47.12 | 32.40 | 53.96 | ||||||||||||
2021 | 33.45 | 29.57 | a | 42.37 | 48.62 | 59.77 | 72.15 | 75.44 | 74.42 | 70.93 | 55.61 | 46.60 | 41.02 | 54.16 | ||||||||||||
2022 | 33.10 | b | 30.16 | 41.35 | 51.25 | 61.08 | 70.77 | 78.27 | 73.94 | 69.25 | 54.90 | 38.73 | 33.23 | 53.00 | ||||||||||||
2023 | 30.61 | 33.36 | 39.48 | 49.65 | 61.89 | 66.77 | 75.77 | 75.73 | 69.33 | 54.98 | 44.53 | 37.84 | 53.33 | |||||||||||||
2024 | 27.95 | 40.28 | 43.45 | 51.47 | o | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 37.23 | i | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 32.80 | 35.29 | 43.02 | 49.85 | 59.66 | 70.55 | 75.40 | 73.42 | 66.49 | 53.35 | 42.20 | 33.00 | 52.94 | |||||||||||||
S.D. | 3.02 | 3.70 | 2.77 | 3.04 | 2.90 | 3.36 | 2.34 | 2.54 | 3.05 | 2.92 | 3.94 | 3.56 | 1.30 | |||||||||||||
SKEW | -0.86 | 0.48 | 0.34 | -0.19 | -0.21 | 0.11 | 0.07 | 0.06 | -0.24 | -0.48 | -0.51 | -0.33 | -0.16 | |||||||||||||
MAX | 38.27 | 44.29 | 48.68 | 55.37 | 66.23 | 76.47 | 80.34 | 78.08 | 72.28 | 59.42 | 47.83 | 41.02 | 56.02 | |||||||||||||
MIN | 23.15 | 29.57 | 38.05 | 42.07 | 53.43 | 64.44 | 70.92 | 69.06 | 60.44 | 45.84 | 32.43 | 26.18 | 49.98 | |||||||||||||
YRS | 35 | 35 | 36 | 34 | 32 | 34 | 34 | 33 | 33 | 35 | 36 | 34 | 29 |