YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
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 | 34.07 | 37.53 | 42.15 | c | 53.45 | t | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 32.25 | b | 28.03 | a | 34.81 | g | ||
1948 | 28.39 | c | 28.66 | a | 27.46 | g | 39.44 | v | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 28.53 | j |
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 | 34.98 | ----- | z | 34.98 | k | |
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 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1999 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2000 | 38.76 | n | 38.31 | k | 37.74 | l | 50.59 | m | 57.30 | h | 65.40 | i | 68.38 | j | 66.06 | n | 61.95 | 49.98 | 33.77 | b | 35.60 | a | 45.33 | h | ||
2001 | 30.20 | f | 33.75 | b | 39.52 | a | 46.97 | a | 56.77 | 64.55 | a | 67.10 | 64.53 | a | 61.85 | 54.05 | j | 40.44 | c | 29.68 | f | 52.83 | c | |||
2002 | 32.17 | b | 35.23 | d | 38.92 | 50.44 | c | 54.97 | 66.08 | f | 69.48 | 66.20 | a | 60.55 | 48.90 | 41.02 | 30.63 | a | 48.05 | a | ||||||
2003 | 39.45 | a | 34.87 | a | 37.35 | 45.88 | 57.03 | 63.43 | a | 70.80 | a | 66.53 | 60.78 | 54.87 | 40.64 | b | 33.69 | e | 50.45 | |||||||
2004 | 32.78 | a | 31.00 | c | 46.42 | 47.14 | a | 57.31 | 63.57 | 66.02 | 64.98 | 59.31 | a | 49.65 | 38.93 | 34.87 | 49.33 | |||||||||
2005 | 36.72 | a | 36.60 | c | 38.62 | a | 47.62 | a | 55.89 | 63.74 | c | 69.50 | 64.23 | 62.45 | 51.25 | a | 43.62 | a | 35.39 | d | 50.47 | |||||
2006 | 34.50 | b | 38.46 | a | 39.61 | c | 48.30 | 57.40 | 66.12 | 69.18 | 64.73 | a | 56.65 | 49.05 | 42.57 | c | 32.63 | 49.93 | ||||||||
2007 | 28.24 | b | 34.20 | a | 43.23 | 48.10 | 55.68 | 64.07 | 69.50 | 68.68 | 62.52 | 53.31 | j | 45.23 | 32.02 | 50.13 | a | |||||||||
2008 | 31.48 | 36.74 | b | 43.02 | 48.40 | 53.20 | a | 65.43 | 67.92 | 67.10 | 60.95 | 52.06 | 44.48 | 36.40 | a | 50.60 | ||||||||||
2009 | 37.47 | 39.76 | c | 43.75 | o | 46.62 | a | 57.45 | 60.70 | 69.60 | 66.89 | 60.90 | 49.87 | 44.23 | 30.26 | 51.25 | a | |||||||||
2010 | 34.94 | 35.21 | 40.18 | 47.79 | a | 54.10 | 64.45 | 68.47 | 68.60 | 64.53 | 53.40 | 39.78 | 40.63 | 51.01 | ||||||||||||
2011 | 34.06 | 33.35 | b | 46.17 | a | 50.72 | 52.69 | 65.15 | 69.19 | 70.02 | 63.32 | 52.66 | 41.78 | 32.15 | 50.94 | |||||||||||
2012 | 37.71 | 37.95 | 42.26 | 50.32 | 57.27 | 66.48 | 67.73 | 67.39 | 60.95 | 51.98 | 42.43 | 30.97 | 51.12 | |||||||||||||
2013 | 23.60 | 29.32 | 42.66 | 47.18 | 55.10 | 66.88 | 67.21 | 65.39 | 60.25 | 47.71 | 40.93 | 32.23 | 48.20 | |||||||||||||
2014 | 35.74 | 38.11 | 41.47 | 46.67 | 53.95 | 65.63 | 67.94 | 63.35 | 61.93 | 52.27 | 41.05 | 34.53 | 50.22 | |||||||||||||
2015 | 34.55 | 40.91 | 43.60 | 47.05 | 51.39 | 66.33 | 65.77 | 67.31 | 62.32 | 52.63 | 38.48 | 29.45 | 49.98 | |||||||||||||
2016 | 29.79 | 37.62 | 43.63 | 46.07 | 52.90 | 67.27 | 68.56 | 63.79 | 60.67 | 54.81 | 41.80 | 34.95 | 50.15 | |||||||||||||
2017 | 31.15 | 39.26 | c | 44.73 | 48.02 | 54.50 | 67.38 | 67.73 | 65.32 | 60.98 | 54.60 | 48.15 | 36.61 | 51.54 | ||||||||||||
2018 | 35.08 | 36.30 | 40.56 | 51.65 | 56.92 | 67.27 | 67.40 | 66.61 | 62.78 | 48.19 | 37.80 | 31.94 | 50.21 | |||||||||||||
2019 | 31.06 | 29.95 | 41.37 | 48.13 | 49.11 | 62.73 | 68.40 | 67.82 | 61.57 | b | 49.34 | 41.30 | 31.84 | 48.55 | ||||||||||||
2020 | 33.12 | e | 34.73 | a | 41.35 | 48.57 | b | 59.08 | 70.20 | y | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 43.37 | g | ||
2021 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 33.10 | 35.28 | 41.61 | 47.80 | 55.14 | 65.07 | 68.29 | 66.29 | 61.36 | 51.29 | 40.71 | 33.24 | 50.18 | |||||||||||||
S.D. | 3.78 | 3.37 | 2.62 | 2.02 | 2.45 | 1.82 | 1.29 | 1.81 | 1.62 | 2.30 | 3.72 | 2.94 | 0.91 | |||||||||||||
SKEW | -0.61 | -0.40 | 0.15 | -0.50 | -0.68 | -0.61 | -0.19 | 0.21 | -0.87 | 0.12 | -0.50 | 0.53 | -0.80 | |||||||||||||
MAX | 39.45 | 40.91 | 46.42 | 51.65 | 59.08 | 67.38 | 70.80 | 70.02 | 64.53 | 54.87 | 48.15 | 40.63 | 51.54 | |||||||||||||
MIN | 23.60 | 28.66 | 37.35 | 42.15 | 49.11 | 60.70 | 65.77 | 63.35 | 56.65 | 47.71 | 32.25 | 28.03 | 48.20 | |||||||||||||
YRS | 20 | 22 | 20 | 21 | 20 | 18 | 19 | 19 | 20 | 18 | 22 | 20 | 15 |