YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1948 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 58.62 | c | 59.98 | 57.14 | a | 51.72 | a | 44.10 | 39.03 | b | 51.77 | f | ||
1949 | 33.07 | a | 40.46 | a | 46.10 | 49.45 | a | 54.57 | b | 54.37 | d | 56.95 | 59.57 | a | 58.17 | a | 48.23 | 52.00 | 43.12 | a | 49.67 | |||||
1950 | 34.13 | 42.93 | a | 44.00 | 47.78 | 50.15 | e | 58.45 | a | 58.12 | b | 60.52 | c | 56.32 | 51.62 | a | 48.22 | 50.13 | 50.20 | |||||||
1951 | 41.28 | a | 42.50 | 37.29 | j | 48.50 | 52.12 | a | 55.10 | 57.86 | c | 57.21 | 56.68 | 53.13 | a | 47.85 | 40.32 | 50.23 | a | |||||||
1952 | 39.16 | 42.43 | 43.20 | a | 47.41 | a | 51.62 | a | 54.72 | a | 58.58 | a | 59.90 | 56.75 | b | 54.81 | 44.02 | d | 43.94 | 49.71 | ||||||
1953 | 46.27 | k | 43.27 | b | 45.67 | b | 47.59 | b | 52.21 | ----- | z | 58.30 | a | 60.65 | 58.20 | b | 53.57 | a | 49.30 | 44.84 | 51.36 | b | ||||
1954 | 40.44 | d | 45.62 | 42.55 | 46.38 | 51.65 | 54.43 | o | 55.83 | a | 59.11 | 57.29 | a | 52.21 | b | 50.81 | a | 44.17 | a | 49.64 | a | |||||
1955 | 41.50 | 41.02 | b | 41.13 | 44.12 | 49.55 | c | 56.50 | n | 57.77 | 55.13 | 55.22 | 52.55 | a | 44.24 | a | 42.63 | 47.71 | a | |||||||
1956 | 42.83 | a | 38.57 | a | 43.63 | a | 48.22 | a | 52.85 | a | 54.90 | 58.68 | a | 59.47 | a | 57.33 | 51.19 | 45.53 | 43.87 | 49.76 | ||||||
1957 | 36.73 | 44.07 | 46.55 | 48.70 | 53.32 | 56.60 | a | 57.52 | 57.56 | 61.05 | 52.29 | b | 46.42 | 45.33 | a | 50.51 | ||||||||||
1958 | 47.34 | 49.95 | 43.73 | 49.52 | 54.94 | 60.43 | 61.30 | a | 58.84 | 58.07 | 53.74 | 46.80 | 48.55 | 52.77 | ||||||||||||
1959 | 44.97 | 43.50 | 45.50 | 48.33 | a | 52.47 | 56.78 | a | 57.77 | a | 56.24 | 55.92 | 53.55 | 47.02 | 43.53 | 50.46 | ||||||||||
1960 | 40.76 | 44.12 | 45.24 | 48.95 | 50.89 | 54.50 | 55.34 | 58.48 | 56.58 | 53.22 | a | 47.25 | 44.10 | 49.95 | ||||||||||||
1961 | 47.89 | 46.86 | 45.98 | 47.25 | 51.87 | a | 56.93 | 59.69 | b | 59.27 | 54.33 | 51.02 | 43.83 | 43.29 | 50.68 | |||||||||||
1962 | 40.45 | 44.43 | 43.34 | 48.82 | 49.71 | 53.42 | 55.92 | 59.24 | 57.05 | 53.66 | 49.23 | 45.06 | 50.03 | |||||||||||||
1963 | 37.73 | 51.00 | 44.52 | 47.48 | 51.40 | 54.60 | 57.38 | a | 58.65 | a | 59.77 | 54.58 | 48.15 | 46.19 | 50.95 | |||||||||||
1964 | 44.00 | 41.71 | 43.95 | 45.18 | 49.11 | 54.60 | 57.82 | 58.03 | 56.33 | 54.00 | 44.67 | 41.66 | 49.26 | |||||||||||||
1965 | 43.90 | 44.11 | 46.13 | 48.38 | 48.55 | 52.73 | 58.38 | a | 60.82 | 55.52 | 55.05 | a | 49.32 | 39.93 | c | 50.24 | ||||||||||
1966 | 43.53 | 43.75 | 43.00 | a | 48.87 | 49.58 | 55.07 | b | 56.52 | 57.52 | 59.32 | 51.98 | 48.03 | 46.79 | b | 50.33 | ||||||||||
1967 | 45.02 | 43.82 | 43.58 | 43.67 | a | 51.80 | a | 58.13 | 58.28 | a | 61.43 | a | 61.18 | 54.08 | 48.40 | 42.31 | 50.98 | |||||||||
1968 | 42.62 | a | 49.04 | a | 48.60 | 45.32 | 52.15 | 55.28 | 58.79 | 58.67 | a | 58.09 | a | 51.08 | 48.03 | 41.05 | 50.72 | |||||||||
1969 | 37.08 | 41.09 | 44.77 | 47.82 | 53.67 | a | 59.72 | 57.03 | 57.07 | a | 56.91 | a | 51.29 | 46.58 | 44.65 | 49.81 | ||||||||||
1970 | 43.60 | a | 47.57 | 45.05 | 45.35 | 51.00 | 56.10 | a | 56.34 | 56.71 | 53.69 | a | 50.79 | 46.64 | a | 39.87 | a | 49.39 | ||||||||
1971 | 41.24 | 42.66 | 42.26 | 47.35 | 51.37 | 53.75 | 56.97 | 60.69 | 55.43 | 49.58 | 45.22 | 41.00 | a | 48.96 | ||||||||||||
1972 | 39.77 | 43.86 | 47.27 | 45.32 | 53.47 | 56.55 | a | 60.18 | a | 59.55 | a | 55.57 | 51.13 | a | 48.62 | 39.90 | 50.10 | |||||||||
1973 | 41.21 | 46.30 | 45.53 | 48.30 | 52.82 | 57.47 | 58.65 | 56.42 | 59.02 | 52.10 | 44.80 | 46.37 | 50.75 | |||||||||||||
1974 | 40.63 | 43.05 | 45.74 | 49.15 | 50.74 | 53.72 | 58.15 | 60.08 | a | 59.28 | 50.69 | 48.15 | 45.40 | 50.40 | ||||||||||||
1975 | 43.79 | 43.52 | 43.95 | 44.15 | 51.65 | 54.42 | 58.42 | 56.76 | 57.47 | 51.52 | a | 45.77 | 44.48 | 49.66 | ||||||||||||
1976 | 43.85 | a | 43.55 | a | 43.13 | 47.33 | 52.18 | a | 53.52 | 58.42 | a | 59.69 | b | 59.45 | b | 54.13 | a | 48.58 | 43.52 | a | 50.61 | |||||
1977 | 43.12 | a | 47.43 | 44.90 | a | 48.23 | 50.79 | 56.45 | a | 57.58 | 61.11 | 56.82 | 51.23 | 45.05 | 46.23 | 50.74 | ||||||||||
1978 | 45.68 | 47.27 | 47.56 | 49.02 | 51.66 | 59.07 | a | 59.42 | a | 60.12 | b | 58.73 | 55.03 | 41.93 | 38.39 | 51.16 | ||||||||||
1979 | 37.18 | a | 43.04 | 48.42 | 49.30 | ----- | z | 54.14 | a | 60.19 | 59.63 | a | 62.14 | a | 55.50 | a | 46.35 | 46.87 | 51.16 | a | ||||||
1980 | 39.89 | 46.75 | a | 45.08 | 49.08 | 51.39 | 54.55 | 58.77 | 57.39 | 58.00 | 52.45 | a | 47.93 | 46.27 | 50.63 | |||||||||||
1981 | 46.82 | 46.16 | 47.25 | a | 49.20 | 52.27 | a | 56.70 | 59.71 | 59.62 | b | 58.27 | 51.95 | 48.10 | 45.29 | 51.78 | ||||||||||
1982 | 41.00 | b | 44.34 | 44.47 | 45.62 | a | 50.69 | 55.82 | 57.44 | 58.98 | a | 58.41 | a | 54.97 | a | 45.81 | a | 43.95 | 50.12 | |||||||
1983 | 47.35 | a | 49.05 | 49.78 | a | 49.08 | 54.03 | 57.05 | 60.95 | 60.04 | c | 56.91 | a | 51.10 | 49.20 | 39.61 | d | 52.01 | ||||||||
1984 | 44.89 | 48.22 | 48.92 | 47.38 | a | 51.48 | a | 53.78 | a | 56.50 | 58.22 | a | 58.28 | a | 51.02 | 47.29 | a | 40.64 | b | 50.55 | ||||||
1985 | 42.15 | e | 40.77 | 42.73 | 48.17 | 52.56 | 54.38 | b | 58.68 | 58.82 | 56.05 | a | 50.37 | a | 39.90 | a | 40.06 | 48.72 | ||||||||
1986 | 47.23 | 45.46 | a | 49.39 | 46.50 | 52.45 | 57.57 | a | 57.45 | 59.16 | 55.03 | 53.37 | 47.55 | 45.02 | 51.35 | |||||||||||
1987 | 43.92 | a | 46.59 | 47.98 | a | 49.42 | 53.31 | 55.31 | a | 57.66 | 58.24 | 56.20 | 53.15 | a | 49.05 | 40.98 | a | 50.98 | ||||||||
1988 | 42.61 | 44.74 | 44.98 | 48.14 | a | 51.69 | 54.00 | a | 56.48 | d | 57.25 | a | 55.48 | 54.79 | 47.67 | 44.10 | b | 50.16 | ||||||||
1989 | 42.34 | 37.70 | a | 44.97 | a | 51.77 | 51.21 | 56.92 | 57.37 | 58.47 | 57.77 | 51.11 | 47.32 | 42.84 | 49.98 | |||||||||||
1990 | 43.78 | a | 42.50 | 46.12 | a | 49.93 | 51.28 | a | 56.07 | a | 58.82 | 60.82 | 59.27 | 50.47 | 47.22 | 37.57 | b | 50.32 | ||||||||
1991 | 41.39 | 49.17 | b | 43.21 | 46.20 | 49.77 | 53.25 | 57.90 | 58.47 | 58.13 | 50.98 | 48.28 | 44.24 | 50.08 | ||||||||||||
1992 | 45.00 | 48.29 | 47.13 | 50.53 | 52.48 | 56.48 | 61.72 | d | 61.84 | b | 58.00 | 54.37 | d | 48.77 | 42.23 | c | 52.24 | |||||||||
1993 | 40.34 | c | 43.39 | e | 48.18 | f | 50.64 | a | 56.35 | d | 57.53 | a | 60.00 | c | 60.33 | d | 57.23 | f | 53.74 | b | 42.50 | a | 43.76 | b | 50.86 | b |
1994 | 45.65 | 42.61 | 47.71 | b | 49.79 | b | 52.78 | a | 55.00 | 57.15 | 60.65 | a | 58.76 | e | 50.03 | b | 42.89 | c | 43.67 | b | 50.56 | |||||
1995 | 47.45 | 47.40 | c | 47.05 | a | 47.93 | c | 52.45 | 55.87 | c | 60.86 | c | 58.50 | c | 62.04 | b | 52.52 | 51.85 | 46.33 | b | 52.52 | |||||
1996 | 44.15 | 45.25 | c | 47.63 | 50.95 | a | 50.98 | a | 55.05 | 58.93 | a | 58.45 | a | 55.63 | 51.52 | 46.22 | 44.58 | a | 50.78 | |||||||
1997 | 44.80 | a | 44.56 | a | 46.52 | a | 49.08 | 56.62 | b | 57.28 | 59.06 | 62.07 | b | 59.78 | c | 52.10 | 50.97 | 43.93 | a | 52.23 | ||||||
1998 | 46.78 | b | 47.56 | a | 46.83 | a | 46.88 | a | 53.03 | 56.03 | 60.71 | b | 58.75 | c | 56.92 | f | 52.77 | c | 48.43 | b | 41.82 | f | 51.78 | b | ||
1999 | 43.93 | a | 44.74 | a | 44.59 | c | 46.91 | c | 49.16 | c | 55.31 | a | 56.98 | b | 60.21 | b | 53.61 | c | 50.58 | e | 50.80 | b | 47.70 | c | 50.38 | |
2000 | 42.05 | a | 46.39 | b | 44.24 | 49.98 | a | 52.71 | 56.48 | b | 58.63 | 57.22 | a | 57.84 | a | 52.77 | a | 43.53 | 44.97 | 50.57 | ||||||
2001 | 43.91 | b | 41.95 | 45.97 | b | 46.07 | 52.85 | a | 54.98 | 55.58 | 60.05 | 55.45 | 50.19 | 48.10 | a | 44.34 | b | 49.95 | ||||||||
2002 | 43.47 | 44.56 | a | 43.37 | 47.08 | 48.89 | 55.45 | b | 58.45 | 57.38 | b | 55.98 | 51.25 | a | 48.27 | 45.90 | a | 50.00 | ||||||||
2003 | 48.61 | 43.00 | 49.34 | 48.17 | a | 51.78 | a | 57.55 | a | 59.08 | 59.11 | 58.45 | 55.93 | a | 45.59 | a | 44.77 | 51.78 | ||||||||
2004 | 44.55 | a | 46.27 | c | 47.40 | 50.72 | a | 52.92 | a | 57.57 | a | 61.30 | a | 61.74 | 57.07 | 53.37 | a | 45.58 | 44.50 | a | 51.92 | |||||
2005 | 45.44 | 45.39 | 48.07 | a | 49.17 | 56.13 | 56.30 | 59.27 | a | 58.23 | 53.00 | 53.29 | 44.11 | b | 43.62 | a | 51.00 | |||||||||
2006 | 46.78 | a | 43.05 | 43.72 | a | 47.98 | ----- | z | 56.24 | e | 57.96 | d | 55.79 | b | 56.06 | e | 49.07 | d | 47.83 | d | 43.48 | g | 50.45 | b | ||
2007 | 39.38 | g | 45.81 | d | 56.42 | e | 59.21 | p | 51.88 | j | 56.35 | 61.46 | c | 60.30 | c | 56.81 | a | 51.88 | a | 46.44 | c | 42.95 | b | 53.16 | c | |
2008 | 40.80 | c | 44.43 | a | 44.10 | 45.43 | 52.52 | b | 53.46 | c | 58.26 | 60.18 | 57.05 | 52.31 | 50.95 | 40.81 | 50.02 | |||||||||
2009 | 43.13 | 43.23 | 44.18 | 47.92 | 52.08 | 57.32 | 59.87 | 60.03 | a | 59.58 | 53.19 | 47.83 | a | 39.57 | c | 50.66 | ||||||||||
2010 | 49.08 | 48.41 | a | 47.10 | 48.05 | a | 51.02 | 54.58 | e | 57.28 | a | 58.48 | 59.30 | g | 57.45 | t | ----- | z | ----- | z | 51.75 | d | ||||
2011 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2012 | ----- | z | ----- | z | ----- | z | ----- | z | 50.12 | a | 54.83 | 58.97 | 59.22 | a | 55.05 | a | 52.15 | 48.72 | 43.18 | 52.78 | d | |||||
2013 | 40.52 | 44.02 | 45.17 | b | 48.57 | 52.24 | b | 57.67 | 57.53 | 60.21 | b | 59.63 | 49.66 | 47.25 | 38.24 | 50.06 | ||||||||||
2014 | 45.23 | a | 42.72 | a | 47.85 | 49.28 | 55.43 | d | 56.05 | a | 60.27 | a | 61.05 | 61.47 | 57.87 | 49.00 | 47.73 | 52.83 | ||||||||
2015 | 47.18 | 50.16 | 49.24 | 47.82 | 52.85 | a | 56.27 | 61.30 | a | 61.15 | a | 57.13 | 56.63 | 46.10 | 45.15 | 52.58 | ||||||||||
2016 | 46.44 | 49.46 | a | 49.02 | 52.43 | 54.89 | 58.02 | 60.06 | 60.47 | b | 56.90 | 54.16 | 52.23 | 39.39 | 52.79 | |||||||||||
2017 | 40.23 | 42.98 | 46.73 | a | 48.50 | 52.95 | 57.40 | a | 57.50 | 60.72 | a | 59.63 | 52.55 | 48.25 | 45.34 | c | 51.06 | |||||||||
2018 | 48.39 | d | 41.39 | 43.78 | b | 49.02 | 53.89 | 56.57 | 59.37 | a | 61.64 | b | 55.81 | a | 55.07 | c | 49.18 | 46.29 | b | 51.70 | ||||||
2019 | 45.22 | a | 38.93 | a | 44.93 | a | 49.77 | b | 53.18 | 54.64 | b | 60.28 | b | 61.36 | c | 59.04 | c | 50.50 | h | 44.52 | 42.02 | h | 51.19 | b | ||
2020 | 45.70 | f | 50.07 | n | ----- | z | ----- | z | 54.50 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 54.50 | k | |
2021 | ----- | z | ----- | z | ----- | z | ----- | z | 51.20 | a | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 51.20 | k |
2022 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 43.09 | 44.64 | 45.79 | 48.09 | 52.14 | 55.87 | 58.48 | 59.22 | 57.48 | 52.54 | 47.17 | 43.52 | 50.69 | |||||||||||||
S.D. | 3.36 | 2.83 | 2.42 | 1.76 | 1.73 | 1.62 | 1.50 | 1.56 | 1.96 | 1.85 | 2.42 | 2.68 | 0.97 | |||||||||||||
SKEW | -0.62 | 0.08 | 1.26 | -0.32 | 0.36 | 0.39 | 0.22 | -0.40 | 0.21 | 0.32 | -0.37 | -0.22 | 0.58 | |||||||||||||
MAX | 49.08 | 51.00 | 56.42 | 52.43 | 56.62 | 60.43 | 61.72 | 62.07 | 62.14 | 57.87 | 52.23 | 50.13 | 52.83 | |||||||||||||
MIN | 33.07 | 37.70 | 41.13 | 43.67 | 48.55 | 52.73 | 55.34 | 55.13 | 53.00 | 48.23 | 39.90 | 37.57 | 48.72 | |||||||||||||
YRS | 67 | 69 | 67 | 68 | 69 | 67 | 71 | 71 | 68 | 69 | 70 | 67 | 58 |