YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1948 | 47.06 | 39.00 | 41.35 | 43.23 | 54.74 | 68.60 | 71.19 | 70.90 | 66.10 | 58.20 | a | 43.77 | 34.87 | 53.25 | ||||||||||||
1949 | 35.16 | 37.89 | 43.94 | 59.83 | 62.42 | 71.37 | 75.58 | 73.52 | 70.60 | 55.55 | 56.13 | 37.03 | 56.58 | |||||||||||||
1950 | 31.10 | 41.07 | 41.68 | 51.90 | 61.29 | 65.70 | 77.29 | 79.32 | 70.10 | 53.90 | 49.20 | 45.93 | a | 55.71 | ||||||||||||
1951 | 36.77 | 41.11 | 44.87 | 61.23 | 59.74 | 74.77 | 78.10 | 76.94 | 74.83 | 54.65 | 46.40 | 37.71 | 57.26 | |||||||||||||
1952 | 32.97 | 40.86 | 39.90 | 57.43 | 61.81 | 61.73 | 79.81 | 76.71 | 74.83 | 68.29 | 49.00 | 37.97 | 56.78 | |||||||||||||
1953 | 43.74 | 43.11 | 43.74 | 51.30 | 51.16 | 58.57 | 75.48 | 71.10 | 72.73 | 57.84 | 47.30 | 43.90 | 55.00 | |||||||||||||
1954 | 37.10 | 49.07 | 45.81 | 54.77 | 64.00 | 60.60 | 73.68 | 66.94 | 64.97 | a | 58.35 | 50.63 | 40.32 | 55.52 | ||||||||||||
1955 | 37.23 | 38.61 | 42.32 | 42.37 | 58.19 | 67.67 | 69.87 | 76.55 | 67.97 | 58.06 | 42.93 | 38.90 | 53.39 | |||||||||||||
1956 | 37.77 | 36.90 | 43.55 | 55.23 | 61.48 | 63.97 | 77.35 | 73.55 | 70.20 | 53.35 | 55.00 | c | 43.33 | d | 55.97 | |||||||||||
1957 | 34.74 | 45.21 | 43.65 | 54.47 | 60.81 | 69.50 | 71.87 | 70.94 | 73.37 | 52.39 | 47.20 | 43.68 | 55.65 | |||||||||||||
1958 | 42.52 | 43.57 | 42.13 | 50.60 | 68.06 | 66.97 | 80.23 | 80.68 | 67.00 | 63.97 | 47.97 | 48.55 | 58.52 | |||||||||||||
1959 | 39.94 | 39.00 | 45.06 | 55.87 | 56.03 | 66.53 | 78.42 | 73.29 | 60.90 | 59.16 | 53.67 | 43.81 | 55.97 | |||||||||||||
1960 | 36.55 | 39.76 | 47.16 | 50.20 | 53.55 | 71.70 | 79.48 | 73.03 | 72.67 | 59.16 | 43.40 | 46.03 | 56.06 | |||||||||||||
1961 | 48.45 | 42.25 | 41.55 | 51.73 | 54.74 | 72.00 | 76.35 | 78.81 | 63.37 | 57.26 | 45.93 | 40.13 | 56.05 | |||||||||||||
1962 | 43.23 | 40.86 | 42.03 | 56.63 | 52.39 | 67.13 | 76.23 | 71.26 | 71.40 | 58.52 | 46.27 | 48.77 | 56.23 | |||||||||||||
1963 | 44.68 | 49.89 | 42.81 | 42.37 | 60.06 | 62.17 | 67.71 | 73.55 | 72.60 | 55.23 | 45.17 | 47.70 | a | 55.33 | ||||||||||||
1964 | 38.10 | 45.45 | 42.58 | 50.03 | 57.06 | 64.40 | 73.10 | 73.84 | 69.13 | 65.23 | 43.40 | 37.42 | 54.98 | |||||||||||||
1965 | 41.23 | 46.21 | 52.32 | 51.53 | 57.94 | 67.27 | 78.23 | 73.29 | 68.63 | 66.26 | 46.20 | 37.90 | 57.25 | |||||||||||||
1966 | 37.77 | 39.25 | 46.48 | 58.20 | 63.71 | 67.23 | 71.97 | 75.77 | 70.47 | 61.58 | 47.13 | 42.03 | 56.80 | |||||||||||||
1967 | 40.90 | 47.18 | 40.61 | 42.00 | 61.68 | 70.93 | 77.26 | 83.39 | 74.17 | 56.65 | 49.80 | 38.03 | 56.88 | |||||||||||||
1968 | 38.87 | 49.72 | 48.23 | 51.37 | 57.74 | 68.13 | 77.90 | 70.35 | 70.50 | 56.16 | 43.57 | 35.35 | 55.66 | |||||||||||||
1969 | 33.58 | 35.21 | 46.39 | 49.47 | 65.97 | 66.83 | 73.13 | 73.84 | 68.67 | 53.42 | 52.93 | 43.10 | 55.21 | |||||||||||||
1970 | 40.81 | 48.93 | 46.13 | 44.90 | 60.61 | 71.57 | 79.00 | 78.32 | 67.07 | 57.94 | 45.73 | 34.97 | 56.33 | |||||||||||||
1971 | 40.77 | 41.79 | 39.39 | 47.77 | 57.71 | 64.43 | 76.65 | 78.03 | 65.20 | 54.19 | 45.30 | 34.45 | 53.81 | |||||||||||||
1972 | 37.32 | 41.93 | 50.35 | 47.57 | 62.45 | 68.93 | 80.19 | 77.55 | 66.87 | 57.35 | 44.77 | 35.39 | 55.89 | |||||||||||||
1973 | 37.52 | 46.50 | 41.35 | 54.87 | 65.32 | 67.20 | 77.68 | 73.45 | 67.93 | 54.52 | 37.00 | 39.77 | 55.26 | |||||||||||||
1974 | 35.77 | 38.68 | 42.61 | 48.53 | 56.52 | 69.00 | 72.55 | 75.81 | 78.50 | 60.39 | 45.77 | 37.94 | 55.17 | |||||||||||||
1975 | 41.52 | 39.29 | 39.45 | 43.07 | 61.97 | 65.87 | 75.74 | 70.81 | 77.47 | 51.97 | 42.37 | 43.74 | 54.44 | |||||||||||||
1976 | 45.90 | 41.90 | 43.81 | 48.87 | 61.06 | 63.97 | 75.03 | 68.45 | 70.17 | 63.55 | 56.33 | 50.23 | 57.44 | |||||||||||||
1977 | 45.71 | 50.07 | 41.42 | 58.40 | 52.97 | 71.70 | 75.16 | 79.48 | 62.70 | 56.81 | 43.17 | 41.45 | 56.59 | |||||||||||||
1978 | 42.00 | 43.29 | 52.19 | 46.03 | 56.45 | 67.73 | 74.74 | 71.19 | 60.30 | 64.77 | 44.60 | 37.87 | 55.10 | |||||||||||||
1979 | 40.87 | 37.68 | 51.45 | 50.77 | 61.52 | 69.33 | 75.35 | 71.03 | 71.67 | 59.55 | 47.27 | 45.19 | 56.81 | |||||||||||||
1980 | 42.87 | 46.21 | 43.52 | 51.83 | 56.87 | 60.47 | 75.06 | 71.42 | 70.60 | 61.39 | 48.83 | 50.16 | 56.60 | |||||||||||||
1981 | 48.16 | 47.11 | 46.39 | 53.30 | 57.58 | 66.07 | 73.48 | 79.29 | 70.07 | 54.74 | 45.97 | 41.39 | 56.96 | |||||||||||||
1982 | 38.39 | 42.46 | 42.55 | 47.93 | 61.42 | 67.50 | 72.16 | 73.65 | 63.07 | 54.42 | 43.30 | 40.16 | 53.92 | |||||||||||||
1983 | 43.48 | 42.04 | 44.68 | 48.27 | 61.39 | 63.40 | 66.16 | 70.71 | 63.90 | 59.29 | 41.03 | 37.00 | 53.45 | |||||||||||||
1984 | 47.00 | 43.00 | 48.03 | 46.90 | 59.39 | 63.20 | 76.19 | 74.55 | 69.63 | 50.84 | 40.13 | 36.94 | 54.65 | |||||||||||||
1985 | 46.94 | 41.14 | 42.26 | 57.33 | 58.81 | 69.17 | 79.00 | 74.16 | 62.03 | 55.48 | 37.63 | 49.00 | 56.08 | |||||||||||||
1986 | 45.42 | 43.86 | 51.35 | 49.70 | 60.00 | 71.37 | 70.58 | 80.03 | 60.07 | 60.19 | 47.50 | 44.87 | 57.08 | |||||||||||||
1987 | 40.90 | 43.96 | 46.87 | 60.03 | 62.06 | 72.93 | 69.55 | 77.94 | 73.40 | 70.65 | 47.90 | 36.97 | 58.60 | |||||||||||||
1988 | 41.55 | 51.45 | 48.90 | 53.40 | 56.48 | 65.07 | 77.68 | 76.65 | 73.03 | 69.39 | 42.37 | 43.42 | 58.28 | |||||||||||||
1989 | 40.61 | 38.00 | 42.71 | 57.86 | a | 58.90 | 68.53 | 69.10 | 70.35 | 70.30 | 57.73 | a | 51.69 | a | 50.71 | 56.38 | ||||||||||
1990 | 39.84 | 40.64 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 55.72 | f | 45.70 | 36.45 | 40.66 | h | ||||
1991 | 46.32 | 51.68 | 42.13 | 47.93 | 53.81 | 63.40 | 75.94 | 75.42 | 77.80 | 65.97 | 49.53 | 45.29 | 57.93 | |||||||||||||
1992 | 44.87 | 49.76 | 54.74 | 55.87 | 71.58 | 70.50 | 75.03 | 79.58 | 69.30 | 59.45 | 45.53 | ----- | z | 61.47 | a | |||||||||||
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 | 78.03 | a | 77.29 | 65.00 | 55.84 | 46.97 | 40.81 | 60.66 | f | |||||
1997 | 40.90 | 43.11 | 47.00 | 49.97 | 65.45 | 62.63 | 71.87 | a | 73.68 | 65.00 | b | 52.68 | 46.37 | 41.68 | 55.03 | |||||||||||
1998 | 40.19 | 37.64 | 43.77 | 50.87 | 50.06 | 65.60 | 77.23 | 76.58 | 70.80 | 54.94 | 41.50 | 37.87 | 53.92 | |||||||||||||
1999 | 43.07 | c | 36.82 | 40.84 | 49.73 | 55.97 | 66.20 | 75.16 | 73.45 | 73.13 | 62.42 | 48.47 | 44.13 | 55.78 | ||||||||||||
2000 | 39.42 | 43.52 | 45.71 | 56.20 | 58.10 | 70.37 | 72.74 | 74.71 | 67.17 | 55.97 | 43.73 | 46.10 | 56.14 | |||||||||||||
2001 | 43.13 | 41.29 | 48.81 | 48.03 | 68.23 | 64.97 | 73.55 | 76.68 | 72.73 | 59.19 | 46.63 | 38.32 | 56.80 | |||||||||||||
2002 | 37.61 | 45.86 | 44.55 | 53.23 | 59.71 | 70.23 | 79.58 | 76.16 | 71.00 | 58.74 | 52.97 | 41.74 | 57.62 | |||||||||||||
2003 | 49.68 | 44.11 | 47.06 | 44.90 | 60.13 | 72.83 | 80.65 | 76.35 | 73.87 | 61.74 | 41.63 | 39.16 | 57.68 | |||||||||||||
2004 | 40.87 | a | 42.34 | 54.03 | 57.20 | 59.90 | 68.53 | 78.81 | 77.68 | 65.60 | 56.06 | 47.30 | 44.32 | 57.72 | ||||||||||||
2005 | 43.13 | 48.96 | 51.00 | 50.00 | 58.90 | 62.37 | 78.84 | 79.23 | 66.73 | 56.74 | 48.30 | 44.52 | 57.39 | |||||||||||||
2006 | 40.29 | 46.04 | 39.06 | 51.87 | 63.77 | 70.20 | 77.74 | 75.61 | 71.27 | 59.16 | 42.80 | 43.35 | 56.76 | |||||||||||||
2007 | 42.55 | 42.36 | 50.84 | 53.20 | 63.94 | 68.13 | 75.94 | 74.55 | 65.90 | 54.19 | 49.90 | 36.68 | 56.51 | |||||||||||||
2008 | 36.84 | 43.66 | 42.58 | 48.53 | 62.13 | 68.43 | 77.42 | 75.74 | 74.50 | 58.61 | 51.03 | 38.97 | 56.54 | |||||||||||||
2009 | 48.13 | 43.39 | 41.90 | 52.37 | 64.32 | 68.17 | 81.26 | 76.48 | 72.70 | 53.35 | 46.40 | 40.65 | 57.43 | |||||||||||||
2010 | 43.19 | 44.36 | 45.13 | 47.20 | 54.16 | 63.23 | 77.23 | 75.29 | 67.90 | 56.97 | 42.73 | 38.13 | 54.63 | |||||||||||||
2011 | 44.45 | 38.93 | 39.77 | 44.03 | 52.94 | 65.00 | 69.65 | 74.35 | 74.50 | 56.68 | 42.10 | 44.84 | 53.94 | |||||||||||||
2012 | 43.32 | 41.00 | 40.13 | 50.60 | 60.65 | 62.80 | 73.23 | 78.13 | 74.27 | 57.35 | 46.17 | 36.42 | e | 55.34 | ||||||||||||
2013 | 40.65 | 40.75 | 47.77 | 53.13 | 62.32 | 68.37 | 79.35 | 75.42 | 64.80 | 57.16 | 48.87 | 43.61 | 56.85 | |||||||||||||
2014 | 50.71 | 43.61 | 47.90 | 55.10 | 62.48 | 67.87 | 80.55 | 78.00 | 72.63 | 60.45 | 48.83 | 42.13 | 59.19 | |||||||||||||
2015 | 51.35 | 49.43 | 53.94 | 53.20 | 61.81 | 75.43 | 80.10 | 77.29 | 68.47 | 64.26 | 43.17 | 37.06 | 59.63 | |||||||||||||
2016 | 39.65 | 48.00 | 45.97 | 58.37 | 62.81 | 70.93 | 72.94 | 79.87 | 68.03 | 51.84 | 47.47 | 36.26 | 56.84 | |||||||||||||
2017 | 36.77 | 40.50 | 45.16 | 48.37 | 64.03 | 68.60 | 78.26 | 81.48 | 69.10 | a | 58.87 | 44.23 | 45.81 | 56.77 | ||||||||||||
2018 | 44.65 | 41.50 | 44.03 | 52.43 | 64.77 | 69.77 | 81.10 | 77.65 | 68.17 | a | 60.42 | 50.93 | 40.10 | 57.96 | ||||||||||||
2019 | 46.35 | 32.86 | 46.58 | 53.63 | 63.23 | 72.03 | 75.42 | 78.03 | 63.50 | 55.52 | 53.17 | 41.42 | 56.81 | |||||||||||||
2020 | 40.16 | 45.17 | 44.90 | b | 56.43 | 61.58 | 66.03 | 77.26 | 77.84 | 75.13 | 63.87 | 46.63 | 43.19 | 58.18 | ||||||||||||
2021 | 41.52 | 39.96 | 45.39 | 58.97 | 63.74 | 75.47 | 81.32 | 77.23 | 71.07 | 53.42 | 49.20 | 37.55 | 57.90 | |||||||||||||
2022 | 47.26 | 48.11 | 49.32 | 46.33 | 55.30 | a | 66.90 | 78.32 | 80.87 | 72.90 | 66.77 | 42.87 | 39.39 | 57.86 | ||||||||||||
2023 | 39.32 | 39.79 | 36.97 | 48.93 | 64.74 | 70.90 | 79.52 | 79.48 | 66.39 | b | 58.16 | 47.80 | ----- | z | 57.46 | a | ||||||||||
2024 | 42.61 | c | 41.78 | f | 43.30 | u | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 42.61 | k |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 41.53 | 42.99 | 45.08 | 51.49 | 60.07 | 67.56 | 75.91 | 75.56 | 69.42 | 58.40 | 46.58 | 41.27 | 56.29 | |||||||||||||
S.D. | 4.25 | 4.09 | 3.94 | 4.70 | 4.20 | 3.62 | 3.48 | 3.32 | 4.21 | 4.36 | 3.91 | 4.17 | 1.41 | |||||||||||||
SKEW | 0.07 | 0.18 | 0.53 | -0.04 | -0.11 | -0.09 | -0.63 | -0.22 | -0.19 | 0.77 | 0.26 | 0.41 | -0.15 | |||||||||||||
MAX | 51.35 | 51.68 | 54.74 | 61.23 | 71.58 | 75.47 | 81.32 | 83.39 | 78.50 | 70.65 | 56.33 | 50.71 | 59.63 | |||||||||||||
MIN | 31.10 | 32.86 | 36.97 | 42.00 | 50.06 | 58.57 | 66.16 | 66.94 | 60.07 | 50.84 | 37.00 | 34.45 | 53.25 | |||||||||||||
YRS | 73 | 72 | 71 | 71 | 71 | 71 | 72 | 72 | 72 | 72 | 73 | 71 | 69 |