YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1948 | 34.42 | 35.66 | 44.60 | a | 50.59 | a | 57.84 | 64.67 | 76.19 | 76.87 | 70.33 | 59.32 | 55.23 | 43.97 | 55.81 | |||||||||||
1949 | 42.71 | 41.82 | 43.42 | 52.67 | 59.58 | 72.60 | 78.06 | 77.32 | 69.53 | 62.61 | 52.67 | 44.87 | 58.16 | |||||||||||||
1950 | 45.84 | 38.61 | 40.71 | 48.27 | 57.55 | 68.10 | 74.39 | 73.03 | 66.17 | 61.29 | 54.53 | 42.84 | 55.94 | |||||||||||||
1951 | 42.87 | 41.64 | 44.29 | 53.73 | 61.35 | 67.80 | 76.35 | 74.84 | 71.17 | 62.48 | 51.80 | 44.84 | 57.76 | |||||||||||||
1952 | 41.23 | 39.48 | 42.19 | 52.73 | 61.23 | 70.60 | 79.97 | 75.71 | 70.13 | 60.03 | 52.03 | 42.77 | 57.34 | |||||||||||||
1953 | 42.39 | 42.07 | 43.23 | 51.10 | 59.97 | 69.57 | 74.35 | 72.58 | 69.97 | 61.16 | 53.93 | 48.26 | 57.38 | |||||||||||||
1954 | 38.94 | 41.82 | 43.65 | 51.40 | 57.68 | 67.30 | 73.55 | 73.55 | 66.70 | 62.52 | 51.87 | 42.81 | 55.98 | |||||||||||||
1955 | 35.13 | 38.21 | 43.06 | 48.93 | 60.55 | 65.43 | 74.97 | 75.03 | 67.40 | 61.39 | 49.33 | 35.00 | a | 54.54 | ||||||||||||
1956 | 36.77 | 39.41 | 40.52 | 48.43 | 55.00 | 67.80 | 72.52 | 73.13 | 67.10 | 61.10 | 53.43 | 47.00 | 55.18 | |||||||||||||
1957 | 34.29 | 40.18 | 44.00 | 52.43 | 60.32 | 71.57 | 75.26 | 73.26 | 70.50 | 60.00 | 53.73 | 47.71 | 56.94 | |||||||||||||
1958 | 40.48 | 32.86 | 42.42 | 51.53 | 57.65 | 64.73 | 72.52 | 73.19 | 67.33 | 58.39 | 53.37 | 37.19 | 54.31 | |||||||||||||
1959 | 36.45 | 36.68 | 42.29 | 50.03 | 61.10 | 66.70 | 72.10 | 73.71 | 71.50 | 61.35 | 51.87 | 43.77 | 55.63 | |||||||||||||
1960 | 38.68 | 41.07 | 37.06 | 50.33 | 60.29 | 68.10 | 73.90 | 72.26 | 68.77 | 60.48 | 54.00 | 39.23 | 55.35 | |||||||||||||
1961 | 33.77 | 36.93 | 42.16 | 49.20 | 56.55 | 65.40 | 72.97 | 73.97 | 71.37 | 61.71 | 50.83 | 42.23 | 54.76 | |||||||||||||
1962 | 39.03 | 36.71 | 42.61 | 51.73 | 59.94 | 68.40 | 72.71 | 72.06 | 67.27 | 60.00 | 48.90 | 40.42 | 54.98 | |||||||||||||
1963 | 38.58 | 35.39 | 43.71 | 51.97 | 59.87 | 71.20 | 73.90 | 74.03 | 65.20 | 62.90 | 54.37 | 36.35 | 55.62 | |||||||||||||
1964 | 39.87 | 36.62 | 42.74 | 48.97 | 62.65 | 70.00 | 73.39 | 71.81 | 67.27 | 59.42 | 52.63 | 43.68 | 55.75 | |||||||||||||
1965 | 35.32 | 36.11 | 41.48 | 47.37 | 60.74 | 67.10 | 74.35 | 75.65 | 68.33 | 59.39 | 49.20 | 42.58 | 54.80 | |||||||||||||
1966 | 36.13 | 37.89 | 44.10 | 48.83 | 56.48 | 68.57 | 76.19 | 75.58 | 67.73 | 59.81 | 52.27 | 42.58 | 55.51 | |||||||||||||
1967 | 42.71 | 35.93 | 38.61 | 48.10 | 54.71 | 66.67 | 72.94 | 71.48 | 67.80 | 62.16 | 50.03 | 44.81 | 54.66 | |||||||||||||
1968 | 36.32 | 34.93 | 46.29 | 52.43 | 61.23 | 68.23 | 76.06 | 74.84 | 71.90 | 63.42 | 51.73 | 40.52 | 56.49 | |||||||||||||
1969 | 38.74 | 39.75 | 43.77 | 53.73 | 61.58 | 72.03 | 74.13 | 76.77 | 70.63 | 61.32 | 51.73 | 42.32 | 57.21 | |||||||||||||
1970 | 32.42 | 40.48 | a | 42.84 | 52.63 | 62.19 | 69.97 | 76.39 | 77.58 | 71.40 | 63.42 | 54.63 | c | 42.90 | 57.24 | |||||||||||
1971 | 36.42 | 40.00 | 42.42 | 49.93 | 60.61 | 71.03 | 78.45 | 77.52 | 77.43 | 70.52 | 54.87 | 46.71 | 58.83 | |||||||||||||
1972 | 42.00 | 38.41 | 41.42 | 48.97 | 58.58 | 66.30 | 72.68 | 74.65 | 69.80 | 58.42 | 48.63 | 45.10 | 55.41 | |||||||||||||
1973 | 37.65 | 36.46 | 47.26 | 52.20 | 58.32 | 70.10 | 73.45 | 75.71 | 68.63 | 62.39 | 50.23 | 46.32 | 56.56 | |||||||||||||
1974 | 40.58 | 36.39 | 45.32 | 53.93 | 59.52 | f | 64.27 | 76.10 | 77.45 | 71.50 | 59.68 | 51.97 | 44.48 | 56.52 | a | |||||||||||
1975 | 44.00 | a | 39.44 | a | 41.64 | c | 48.79 | a | 61.81 | 67.93 | 78.48 | 79.81 | 71.03 | 64.58 | 58.43 | 45.06 | 58.42 | |||||||||
1976 | 38.35 | 44.93 | a | 44.80 | a | 54.71 | b | 61.87 | 69.53 | 75.10 | 75.45 | 70.90 | 59.35 | 48.10 | 40.90 | 57.00 | ||||||||||
1977 | 31.58 | 37.75 | 48.19 | 53.79 | b | 61.97 | 68.23 | 76.71 | 76.32 | 69.57 | b | 59.48 | 52.50 | 40.97 | 56.42 | |||||||||||
1978 | 35.87 | 31.46 | 39.97 | 49.63 | 59.61 | 72.77 | 74.55 | 77.74 | 68.16 | k | 60.06 | 52.47 | 46.00 | a | 54.56 | a | ||||||||||
1979 | 41.97 | 30.07 | 45.77 | 51.83 | 62.92 | f | 69.10 | j | 77.71 | 74.23 | 68.80 | 59.48 | 55.07 | 45.16 | 55.01 | b | ||||||||||
1980 | 38.06 | 34.24 | 41.97 | 52.43 | 61.23 | 68.62 | a | 75.84 | 76.48 | 71.10 | 58.23 | 49.17 | 40.00 | 55.61 | ||||||||||||
1981 | 29.48 | 42.25 | 41.61 | 52.03 | 58.68 | 69.50 | 75.97 | 72.94 | 67.63 | 56.35 | 50.17 | 40.00 | 54.72 | |||||||||||||
1982 | 32.61 | 36.71 | 43.26 | 47.83 | 59.32 | 63.43 | 72.65 | 70.77 | 66.67 | ----- | z | ----- | z | ----- | z | 54.81 | c | |||||||||
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 | 43.61 | 42.71 | 44.71 | 52.93 | 60.81 | 66.80 | 74.50 | a | 75.19 | 70.70 | 60.32 | 51.15 | c | 46.48 | 57.49 | |||||||||||
1999 | 40.81 | 41.11 | 44.74 | 52.23 | 62.84 | 70.87 | 77.67 | a | 75.32 | 72.60 | 61.29 | 55.07 | a | 45.65 | 58.35 | |||||||||||
2000 | 37.84 | 40.72 | 48.45 | 51.73 | 60.42 | 67.31 | a | 72.32 | 73.10 | 68.60 | 60.52 | 49.00 | 40.06 | 55.84 | ||||||||||||
2001 | 38.61 | 40.68 | 42.58 | 50.97 | 62.19 | 71.77 | 72.55 | 76.13 | a | 69.93 | c | 62.81 | 55.64 | e | 52.53 | n | 58.53 | a | ||||||||
2002 | 43.32 | c | 44.00 | 47.13 | 53.80 | 59.71 | 67.00 | 76.23 | 75.42 | e | 71.17 | 60.19 | 52.13 | 42.61 | 57.73 | |||||||||||
2003 | 34.45 | 34.36 | 44.65 | 48.50 | 58.06 | 65.07 | a | 75.10 | 76.90 | 70.67 | 61.17 | b | 53.10 | 44.23 | 55.52 | |||||||||||
2004 | 30.26 | 38.07 | 42.48 | 51.90 | 61.35 | 67.77 | 73.16 | 73.06 | 70.27 | 59.84 | 52.07 | 45.90 | 55.51 | |||||||||||||
2005 | 37.16 | 38.71 | 40.69 | b | 51.83 | 55.19 | 66.53 | 74.35 | 78.61 | 74.40 | 62.19 | 55.21 | a | 41.61 | 56.38 | |||||||||||
2006 | 44.71 | 38.54 | 43.39 | 53.13 | 60.35 | 67.93 | 75.13 | 75.52 | 68.87 | 60.77 | 55.73 | 49.26 | 57.78 | |||||||||||||
2007 | 42.03 | 34.57 | 44.10 | 49.17 | 61.68 | 68.03 | 74.52 | 75.42 | 71.17 | 63.74 | 51.13 | 42.35 | 56.49 | |||||||||||||
2008 | 40.77 | 41.14 | 44.19 | 53.00 | a | 58.29 | 70.57 | 77.16 | 74.48 | 69.93 | 59.84 | 51.17 | 46.71 | 57.27 | ||||||||||||
2009 | 35.87 | 40.39 | 43.52 | 53.47 | 59.23 | 65.13 | 72.32 | 75.06 | 68.87 | 59.77 | 55.37 | 41.76 | b | 55.90 | ||||||||||||
2010 | 36.58 | 37.96 | 48.19 | 55.10 | 63.87 | 71.00 | 79.19 | 76.00 | 71.90 | 61.90 | 51.50 | 39.68 | 57.74 | |||||||||||||
2011 | 36.74 | 39.96 | 44.45 | 53.67 | 61.48 | 69.90 | 76.97 | 75.90 | 71.47 | 63.29 | 56.83 | 50.68 | 58.45 | |||||||||||||
2012 | 44.48 | 44.54 | a | 49.94 | 55.30 | 63.10 | 69.73 | 78.74 | 77.55 | 71.27 | 63.23 | 50.63 | 47.03 | a | 59.63 | |||||||||||
2013 | 39.14 | b | 40.25 | 44.29 | 53.67 | 62.10 | 68.63 | 77.68 | 73.94 | 69.37 | 63.26 | 51.50 | 44.06 | 57.32 | ||||||||||||
2014 | 37.97 | 37.79 | 41.29 | 52.10 | 62.13 | 70.75 | b | 74.55 | 73.71 | 71.13 | 63.13 | 53.30 | 47.26 | 57.09 | ||||||||||||
2015 | 39.27 | a | 32.86 | 40.10 | 52.73 | 64.03 | 69.63 | 77.19 | 79.48 | 73.44 | n | 62.32 | 57.30 | 55.29 | 57.29 | a | ||||||||||
2016 | 42.90 | 43.34 | 49.10 | 52.93 | 63.07 | a | 69.90 | 76.16 | 77.94 | 71.90 | 63.19 | 53.60 | 45.19 | 59.10 | ||||||||||||
2017 | 43.61 | 44.21 | 41.52 | 54.33 | 59.37 | a | 68.73 | 75.03 | 74.84 | 70.30 | 66.23 | 53.60 | 40.65 | 57.70 | ||||||||||||
2018 | 37.90 | 45.07 | 43.10 | 49.97 | 61.77 | 68.17 | 74.97 | 78.97 | 72.80 | 61.35 | 51.27 | 43.39 | 57.39 | |||||||||||||
2019 | 39.13 | 39.00 | 43.16 | 53.23 | 59.71 | 69.93 | c | 77.61 | 76.42 | 70.37 | 62.60 | a | 52.17 | 45.42 | 57.40 | |||||||||||
2020 | 43.58 | 44.31 | 48.13 | 50.53 | 60.23 | 69.93 | 76.35 | 78.13 | 71.56 | c | ----- | z | 59.73 | d | 48.19 | 59.15 | a | |||||||||
2021 | 39.74 | 38.78 | a | ----- | z | 54.74 | g | 63.00 | 73.38 | a | 77.60 | a | 80.94 | 75.93 | b | 67.74 | 55.47 | 50.71 | 62.33 | b | ||||||
2022 | 41.97 | a | 44.50 | 49.61 | 56.30 | 62.90 | 71.83 | 80.45 | 80.55 | 74.77 | 66.77 | a | 59.33 | 46.81 | e | 61.32 | ||||||||||
2023 | 47.07 | b | 43.46 | 46.39 | 55.83 | 62.06 | 67.70 | 77.06 | 74.42 | 70.52 | a | 63.68 | 51.73 | 48.16 | 59.01 | |||||||||||
2024 | 41.03 | 41.07 | 47.71 | 52.46 | f | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 43.27 | i | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 38.91 | 39.04 | 43.79 | 51.69 | 60.29 | 68.64 | 75.40 | 75.42 | 70.15 | 61.62 | 52.84 | 44.04 | 56.73 | |||||||||||||
S.D. | 3.86 | 3.44 | 2.67 | 2.17 | 2.16 | 2.27 | 2.09 | 2.25 | 2.30 | 2.40 | 2.57 | 3.61 | 1.47 | |||||||||||||
SKEW | -0.25 | -0.28 | 0.33 | -0.13 | -0.69 | -0.14 | 0.32 | 0.33 | 0.53 | 1.11 | 0.54 | 0.17 | 0.58 | |||||||||||||
MAX | 47.07 | 45.07 | 49.94 | 56.30 | 64.03 | 73.38 | 80.45 | 80.94 | 77.43 | 70.52 | 59.73 | 55.29 | 61.32 | |||||||||||||
MIN | 29.48 | 30.07 | 37.06 | 47.37 | 54.71 | 63.43 | 72.10 | 70.77 | 65.20 | 56.35 | 48.10 | 35.00 | 54.31 | |||||||||||||
YRS | 62 | 62 | 61 | 60 | 59 | 60 | 61 | 61 | 59 | 59 | 60 | 59 | 53 |